WO2024255571A1 - 通信方法及相关装置 - Google Patents

通信方法及相关装置 Download PDF

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Publication number
WO2024255571A1
WO2024255571A1 PCT/CN2024/095349 CN2024095349W WO2024255571A1 WO 2024255571 A1 WO2024255571 A1 WO 2024255571A1 CN 2024095349 W CN2024095349 W CN 2024095349W WO 2024255571 A1 WO2024255571 A1 WO 2024255571A1
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WIPO (PCT)
Prior art keywords
terminal device
information
message
uplink data
signal
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PCT/CN2024/095349
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English (en)
French (fr)
Inventor
石蒙
廖树日
窦圣跃
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP24822523.7A priority Critical patent/EP4709020A1/en
Publication of WO2024255571A1 publication Critical patent/WO2024255571A1/zh
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
    • H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
    • H04W74/0891—Non-scheduled access, e.g. ALOHA using a dedicated channel for access for synchronized access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present application relates to the field of communication technology, and in particular to a communication method and related devices.
  • NTN non-terrestrial network
  • the satellite in the initial access stage of the user equipment (UE), the satellite acts as a base station and configures random access resources to the UE to achieve random access of the UE.
  • the satellite moves faster than the ground and the signal propagation distance is longer, which makes the signal path loss of the satellite as a base station greater, and the uplink and downlink transmission performance is limited, resulting in low initial access performance of the UE.
  • the embodiments of the present application provide a communication method and related devices, which can overcome the signal path loss of the communication signal between the UE and the satellite base station, improve the uplink transmission performance, and enable the UE to stably complete the initial access.
  • an embodiment of the present application provides a communication method, which can be performed by a communication device.
  • the communication device can be a device sold as a whole, or a chip (system) or circuit for a device, which is not limited in the present application.
  • the method includes:
  • a communication method in which a terminal device sends first information to a network device and receives second information from the network device.
  • the terminal device here can also be a processor/chip that can be used to execute computer execution instructions, and the embodiment of the present application does not limit this.
  • the first information in the embodiment of the present application is used to request the enhancement of the uplink data transmission corresponding to the terminal device.
  • the embodiment of the present application does not limit how to specifically request the enhancement of the uplink data transmission.
  • it can be a request to transmit a transport block (TB) of the uplink data corresponding to the terminal device on multiple time slots and support repeated transmission through the transport block over multi-slot (TBoMS) technology, or it can be a request to repeatedly send a TB of the uplink data corresponding to the terminal device on multiple time slots, or it can be a request to scale the information bit data amount (Ninfo) through the transport block scaling factor (TB scaling), and enhance the uplink data transmission performance by further reducing the bit rate through the encoded rate matching.
  • TB transport block
  • Ninfo information bit data amount
  • TB scaling factor transport block scaling factor
  • the first information in the embodiment of the present application is carried in the radio resource control (RRC) connection establishment message of the terminal device, so that the terminal device can report its own capabilities during the initial access process of the RRC connection, so that the network device can also learn the capabilities supported by the terminal device, judge whether the uplink transmission performance of the terminal device needs to be enhanced, and enable the terminal device to stably complete the initial access.
  • RRC radio resource control
  • terminal devices do not have the ability to report uplink transmission performance during the initial access process of the RRC connection.
  • Network devices do not know which capabilities the terminal devices support and cannot determine whether the uplink transmission performance of the terminal devices needs to be enhanced, and thus cannot ensure that the terminal devices can stably complete the initial access.
  • the second information in the embodiment of the present application is used to indicate the uplink data transmission enhancement corresponding to the terminal device, and specifically indicates how to perform the uplink data transmission enhancement, which is not limited in the embodiment of the present application.
  • the second information is used to indicate that the uplink data transmission enhancement be performed in the manner requested by the first information.
  • the second information is used to indicate that the manner in which the uplink data transmission enhancement is performed can be determined by the network device.
  • the terminal device has not reported its own capabilities, and the network device does not know which capabilities the terminal device supports, and cannot determine whether the uplink transmission performance of the terminal device needs to be enhanced.
  • the terminal device by carrying information requesting the uplink data transmission enhancement corresponding to the terminal device in the RRC connection establishment message, The terminal device is able to report its own uplink transmission performance during the initial access process of the RRC connection, so that the network device can also learn the uplink transmission performance of the terminal device and determine whether the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the UE and the network device (satellite base station), improving the uplink transmission performance, and enabling the UE to stably complete the initial access.
  • the first information used to request the enhancement of the uplink data transmission corresponding to the terminal device can be reported to the network device during the initial access process of the RRC connection of the terminal device, so that the network device can learn the uplink transmission performance of the terminal device as early as possible during the initial access process of the RRC connection, and then determine that the uplink transmission performance of the terminal device needs to be enhanced, so that the UE can stably complete the initial access.
  • the first information can be reported to the network device through the RRC connection establishment message during the initial access process of the RRC connection, and the first information can also be reported to the network device through other messages during the initial access process of the RRC connection, and the embodiments of the present application are not limited to this.
  • the RRC connection establishment message is carried in message 3
  • the second information is carried in message 4.
  • the RRC connection establishment message is carried in message 3 (Msg3) in the four-step random access process
  • the second information is carried in message 4 (Msg4) in the four-step random access process.
  • message 3 is used to carry the first information to request uplink data transmission enhancement, so that the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced
  • message 4 is used to carry the second information to indicate uplink data transmission enhancement, which can enhance the transmission performance of message 5 (Msg5) and subsequent uplink data, thereby overcoming the signal path loss of the communication signal between the terminal device and the network device, improving the uplink transmission performance, and enabling the terminal device to stably complete the initial access.
  • the RRC connection establishment message is carried in message A, and the second information is carried in message B.
  • the RRC connection establishment message is carried in message A (MsgA) in the two-step random access process
  • the second information is carried in message B (MsgB) in the two-step random access process.
  • message A is used to carry the first information to request uplink data transmission enhancement, so that the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced
  • message B is used to carry the second information to indicate uplink data transmission enhancement, which can enhance the transmission performance of subsequent uplink data, thereby overcoming the signal path loss of the communication signal between the terminal device and the network device, improving the uplink transmission performance, and enabling the terminal device to stably complete the initial access.
  • the first information includes a bit, the value of the one bit is a first value, and the first value indicates a request for enhancement of the uplink data transmission corresponding to the terminal device.
  • the first information includes a bit, and by assigning different values to the one bit, it can indicate a request or non-request for uplink data transmission enhancement corresponding to the terminal device.
  • the value of the one bit is a first value, indicating a request for uplink data transmission enhancement corresponding to the terminal device.
  • the one bit can be a reserved bit in a multiplexed RRC connection establishment message, enabling its function of indicating a request for uplink data transmission enhancement; the one bit can also be a newly added bit in the RRC connection establishment message, and the embodiment of the present application does not limit this.
  • the value of the one bit is a second value, indicating that uplink data transmission enhancement corresponding to the terminal device is not requested, and the first value and the second value are different.
  • the value of this bit is a null value, indicating that uplink data transmission enhancement corresponding to the terminal device is not requested; or, a bit included in the above-mentioned first information does not exist, which may also indicate that uplink data transmission enhancement corresponding to the terminal device is not requested.
  • the RRC connection establishment message of the terminal device is carried in a media access control MAC layer data packet, and the header of the MAC layer data packet includes a logical channel identifier corresponding to the uplink data transmission enhancement corresponding to the terminal device.
  • the request for uplink data transmission enhancement using the RRC connection establishment message can also be represented by a logical channel identifier (LCID) in a media access control (MAC) layer data packet.
  • LCID logical channel identifier
  • MAC media access control
  • the second information includes at least one of the following: the number of time slots occupied by the multi-slot transmission block TBoMS, the number of repetitions of the TBoMS transmission;
  • the second information is specifically used to indicate that the uplink data corresponding to the terminal device is transmitted through the TBoMS.
  • the second information includes but is not limited to the number of time slots occupied by TBoMS and the number of repetitions of TBoMS transmission. At this time, the second information is specifically used to indicate that the uplink data corresponding to the terminal device is transmitted through TBoMS.
  • the method further includes:
  • Receive third information from the network device the third information being used to indicate that in the case of time division multiplexing transmission, the time slot occupied by the uplink data transmission corresponding to the terminal device is different from the time slot occupied by the message 1 transmission in the four-step random access process corresponding to the terminal device, or the time slot occupied by the uplink data transmission corresponding to the terminal device is different from the time slot occupied by the message A transmission in the two-step random access process corresponding to the terminal device.
  • a possible specific implementation method for resolving the conflict between the uplink data transmission timing and the access timing is provided, specifically, the terminal device receives the third information from the network device, and can avoid the conflict between the uplink data transmission timing and the access timing according to the third information.
  • the third information avoids the conflict between the uplink data transmission timing and the access timing by indicating that in the case of time division multiplexing transmission, the time slot occupied by the uplink data transmission is different from the time slot occupied by the message 1 (Msg1) transmission in the four-step random access process.
  • the third information avoids the conflict between the uplink data transmission timing and the access timing by indicating that in the case of time division multiplexing transmission, the time slot occupied by the uplink data transmission is different from the time slot occupied by the message A (MsgA) transmission in the two-step random access process.
  • MsgA message A
  • uplink data transmission uses continuous time slots.
  • the transmission resources of the uplink data may conflict with the access resources of the access opportunity, resulting in low initial access performance of the UE.
  • the time slot occupied by the uplink data transmission is avoided from the time slot occupied by the access opportunity, so as to avoid the conflict between the transmission resources of the uplink data and the access resources of the access opportunity, thereby improving the uplink transmission performance and enabling the UE to stably complete the initial access.
  • the third information is also used to indicate that in the case of frequency division multiplexing transmission, the time slots occupied by the uplink data transmission corresponding to the terminal device are continuous uplink time slots.
  • the third information is also used to indicate that in the case of frequency division multiplexing transmission, the time slot occupied by the uplink data transmission corresponding to the terminal device is a continuous uplink time slot. It can be understood that, since the uplink data transmission and the random access message transmission adopt frequency division multiplexing transmission, there is no problem of conflict between the uplink data transmission timing and the access timing. In this scenario, the time slot occupied by the uplink data transmission corresponding to the terminal device can be a continuous uplink time slot, and the time slot occupied by the uplink data transmission and the time slot occupied by the access timing can be different or the same, which can be determined according to the needs of the network device.
  • the method further includes:
  • a terminal device receives a first broadcast signal from a network device, and determines the uplink data transmission enhancement corresponding to the terminal device according to the energy of the first broadcast signal.
  • the first broadcast signal can be a synchronization signal block (SSB), a system information block 1 (SIB1) and other cell-level information required for the initial access process of the terminal device, and the energy of the first broadcast signal can be the signal quality.
  • SIB1 system information block 1
  • the uplink data transmission enhancement corresponding to the terminal device is determined.
  • the energy size of the received first broadcast signal it is determined whether to request the uplink data transmission enhancement corresponding to the terminal device, so as to achieve the transmission performance enhancement of message 5 (Msg5) and subsequent uplink data in the four-step random access process.
  • the energy of the first broadcast signal is less than the second threshold, it is determined that the uplink data corresponding to the terminal device is transmitted and enhanced starting from message 3 (Msg3) or message A (MsgA).
  • the energy of the received first broadcast signal is measured to determine whether to request the corresponding uplink data transmission enhancement of the terminal device, so as to achieve transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • the need to request the corresponding uplink data transmission enhancement of the terminal device can be determined by measuring the energy size of the first broadcast signal, so that the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the UE and the network device (satellite base station), improving the uplink transmission performance, and enabling the UE to stably complete initial access.
  • the method further includes:
  • the uplink data corresponding to the terminal device starts uplink transmission enhancement from message 3 or message A and ends uplink transmission enhancement with the RRC reconfiguration message.
  • the first threshold is carried in the second broadcast signal, the first threshold is a threshold of a signal quality corresponding to the first broadcast signal or the second broadcast signal, and the signal quality includes any one or more of the following:
  • Reference signal received power RSRP Reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, signal to noise ratio SNR.
  • a possible specific implementation of a first threshold is provided, specifically, the first threshold is carried in the second broadcast signal, and the first threshold is a threshold of the signal quality corresponding to the first broadcast signal or the second broadcast signal.
  • the signal quality corresponding to the broadcast signal can include but is not limited to reference signal receiving power (reference signal receiving power, RSRP), reference signal receiving quality (reference signal receiving quality, RSRQ), received signal strength indicator (received signal strength indicator, RSSI), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR), and signal to noise ratio (signal noise ratio, SNR).
  • the first threshold is carried in the broadcast signal and is the threshold of the signal quality corresponding to the broadcast signal.
  • the energy of the broadcast signal is measured by comparing the energy of the broadcast signal with the first threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 5 (Msg5) and subsequent uplink data.
  • the first threshold is carried in the second broadcast signal and is the threshold of the signal quality corresponding to the first broadcast signal or the second broadcast signal.
  • the energy of the first broadcast signal is measured by comparing the energy of the first broadcast signal with the first threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 5 (Msg5) and subsequent uplink data.
  • Msg5 message 5
  • the second threshold is carried in a third broadcast signal, the second threshold is a threshold of a signal quality corresponding to the message 3 or the message A, and the signal quality includes any one or more of the following:
  • the threshold of reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, and signal to noise ratio SNR is the threshold of reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, and signal to noise ratio SNR.
  • a possible specific implementation of a second threshold is provided, specifically, the second threshold is carried in a third broadcast signal, and the second threshold is a threshold of the signal quality corresponding to message 3 or message A.
  • the signal quality corresponding to the broadcast signal may include but is not limited to reference signal receiving power (reference signal receiving power, RSRP), reference signal receiving quality (reference signal receiving quality, RSRQ), received signal strength indicator (received signal strength indicator, RSSI), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR), and signal to noise ratio (signal noise ratio, SNR).
  • the second threshold is carried in the broadcast signal and is the threshold of the signal quality corresponding to message 3 or message A.
  • the energy of the broadcast signal is measured by comparing the energy of the broadcast signal with the second threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • the second threshold is carried in the third broadcast signal and is the threshold of the signal quality corresponding to message 3 or message A.
  • the energy of the first broadcast signal is measured by comparing the energy of the first broadcast signal with the second threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • Msg3 message 3
  • MsgA message A
  • an embodiment of the present application provides a communication method, which can be performed by a communication device.
  • the communication device can be a device sold as a whole, or a chip (system) or circuit for a device, which is not limited in the present application.
  • the method includes:
  • a communication method in which a terminal device receives a first broadcast signal from a network device, and determines an uplink data transmission enhancement corresponding to the terminal device based on the energy of the first broadcast signal.
  • the terminal device here may also be a processor/chip that can be used to execute computer execution instructions, and the embodiment of the present application does not limit this.
  • the first broadcast signal in the embodiment of the present application may be cell-level information required for the initial access process of the terminal device, such as a synchronization signal block (SSB) and a system information block 1 (SIB1), and the energy of the first broadcast signal may be the signal quality.
  • SSB synchronization signal block
  • SIB1 system information block 1
  • the uplink data transmission enhancement corresponding to the terminal device is determined. It can be understood that in this case, by measuring the energy of the received first broadcast signal, it is determined whether to request the uplink data transmission enhancement corresponding to the terminal device, so as to achieve the transmission performance enhancement of message 5 (Msg5) and subsequent uplink data.
  • Msg5 message 5
  • the uplink data corresponding to the terminal device is transmitted from message 3 (Msg3) or message A (MsgA) Start transmission enhancement. It is understandable that in this case, by measuring the energy of the received first broadcast signal, it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • the need to request the corresponding uplink data transmission enhancement of the terminal device can be determined by measuring the energy size of the first broadcast signal, so that the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the UE and the network device (satellite base station), improving the uplink transmission performance, and enabling the UE to stably complete initial access.
  • the method further includes:
  • the uplink data corresponding to the terminal device starts uplink transmission enhancement from message 3 or message A and ends uplink transmission enhancement with the RRC reconfiguration message.
  • the first threshold is carried in the second broadcast signal, the first threshold is a threshold of the signal quality corresponding to the first broadcast signal or the second broadcast signal, and the signal quality includes any one or more of the following:
  • Reference signal received power RSRP Reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, signal to noise ratio SNR.
  • a possible specific implementation of a first threshold is provided, specifically, the first threshold is carried in the second broadcast signal, and the first threshold is a threshold of the signal quality corresponding to the first broadcast signal or the second broadcast signal.
  • the signal quality corresponding to the broadcast signal can include but is not limited to reference signal receiving power (reference signal receiving power, RSRP), reference signal receiving quality (reference signal receiving quality, RSRQ), received signal strength indicator (received signal strength indicator, RSSI), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR), and signal to noise ratio (signal noise ratio, SNR).
  • the first threshold is carried in the broadcast signal and is the threshold of the signal quality corresponding to the broadcast signal.
  • the energy of the broadcast signal is measured by comparing the energy of the broadcast signal with the first threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 5 (Msg5) and subsequent uplink data.
  • the first threshold is carried in the second broadcast signal and is the threshold of the signal quality corresponding to the first broadcast signal or the second broadcast signal.
  • the energy of the first broadcast signal is measured by comparing the energy of the first broadcast signal with the first threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 5 (Msg5) and subsequent uplink data.
  • Msg5 message 5
  • the second threshold is carried in a third broadcast signal, the second threshold is a threshold of a signal quality corresponding to the message 3 or the message A, and the signal quality includes any one or more of the following:
  • the threshold of reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, and signal to noise ratio SNR is the threshold of reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, and signal to noise ratio SNR.
  • a possible specific implementation of a second threshold is provided, specifically, the second threshold is carried in a third broadcast signal, and the second threshold is a threshold of the signal quality corresponding to message 3 or message A.
  • the signal quality corresponding to the broadcast signal may include but is not limited to reference signal receiving power (reference signal receiving power, RSRP), reference signal receiving quality (reference signal receiving quality, RSRQ), received signal strength indicator (received signal strength indicator, RSSI), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR), and signal to noise ratio (signal noise ratio, SNR).
  • the second threshold is carried in the broadcast signal and is the threshold of the signal quality corresponding to message 3 or message A.
  • the energy of the broadcast signal is measured by comparing the energy of the broadcast signal with the second threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • the second threshold is carried in the third broadcast signal and is the threshold of the signal quality corresponding to message 3 or message A.
  • the energy of the first broadcast signal is measured by comparing the energy of the first broadcast signal with the second threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • Msg3 message 3
  • MsgA message A
  • an embodiment of the present application provides a communication method, which can be performed by a communication device.
  • the communication device can be a device sold as a whole, or a chip (system) or circuit for a device, which is not limited in the present application.
  • the method includes:
  • a communication method in which a network device receives first information from a terminal device and sends second information to the terminal device.
  • the network device here can also be a processor/chip that can be used to execute computer execution instructions, and the embodiment of the present application does not limit this.
  • the first information in the embodiment of the present application is used to request the enhancement of the uplink data transmission corresponding to the terminal device.
  • the embodiment of the present application does not limit how to specifically request the enhancement of the uplink data transmission.
  • it can be a request to transmit a transport block (transport block, TB) of the uplink data corresponding to the terminal device on multiple time slots and support repeated transmission through the transport block over multi-slot (TBoMS) technology, or it can be a request to repeatedly send a TB of uplink data corresponding to the terminal device on multiple time slots, or it can be a request to scale the information bit data amount (Ninfo) through the transport block scaling factor (TB scaling), and enhance the uplink data transmission performance by further reducing the bit rate through the encoded rate matching.
  • the first information in the embodiment of the present application is carried in the radio resource control (radio resource control, RRC) connection establishment message of the terminal device.
  • RRC radio resource control
  • the second information in the embodiment of the present application is used to indicate the uplink data transmission enhancement corresponding to the terminal device, and specifically indicates how to perform the uplink data transmission enhancement, which is not limited in the embodiment of the present application.
  • the second information is used to indicate that the uplink data transmission enhancement be performed in the manner requested by the first information.
  • the second information is used to indicate that the manner in which the uplink data transmission enhancement is performed can be determined by the network device.
  • the terminal device has not reported its own capabilities, and the network device does not know which capabilities the terminal device supports, and cannot determine whether the uplink transmission performance of the terminal device needs to be enhanced.
  • the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the UE and the network device (satellite base station), improving the uplink transmission performance, and enabling the UE to stably complete initial access.
  • the RRC connection establishment message is carried in message 3
  • the second information is carried in message 4.
  • the RRC connection establishment message is carried in message 3 (Msg3) in the four-step random access process
  • the second information is carried in message 4 (Msg4) in the four-step random access process.
  • message 3 is used to carry the first information to request uplink data transmission enhancement, so that the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced
  • message 4 is used to carry the second information to indicate uplink data transmission enhancement, which can enhance the transmission performance of message 5 (Msg5) and subsequent uplink data, thereby overcoming the signal path loss of the communication signal between the terminal device and the network device, improving the uplink transmission performance, and enabling the terminal device to stably complete the initial access.
  • the RRC connection establishment message is carried in message A, and the second information is carried in message B.
  • the RRC connection establishment message is carried in message A (MsgA) in the two-step random access process
  • the second information is carried in message B (MsgB) in the two-step random access process.
  • message A is used to carry the first information to request uplink data transmission enhancement, so that the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced
  • message B is used to carry the second information to indicate uplink data transmission enhancement, which can enhance the transmission performance of subsequent uplink data, thereby overcoming the signal path loss of the communication signal between the terminal device and the network device, improving the uplink transmission performance, and enabling the terminal device to stably complete the initial access.
  • the first information includes a bit, the value of the bit is a first value, and the first value indicates a request for enhancement of the uplink data transmission corresponding to the terminal device.
  • the first information includes one bit, and by assigning different values to the one bit, it can indicate a request or non-request for uplink data transmission enhancement corresponding to the terminal device.
  • the value of the one bit is the first value, indicating a request for uplink data transmission enhancement corresponding to the terminal device.
  • the one bit can be a reserved bit in a multiplexed RRC connection establishment message, enabling its function of indicating a request for uplink data transmission enhancement; the one bit can also be a newly added bit in the RRC connection establishment message, and the embodiment of the present application does not limit this.
  • the value of the one bit is a second value, indicating that uplink data transmission enhancement corresponding to the terminal device is not requested, and the first value and the second value are different.
  • the RRC connection establishment message of the terminal device is carried in a media access control MAC layer data packet, and the header of the MAC layer data packet includes a logical channel identifier corresponding to the uplink data transmission enhancement corresponding to the terminal device.
  • the request for uplink data transmission enhancement using the RRC connection establishment message can also be represented by a logical channel identifier (LCID) in a media access control (MAC) layer data packet.
  • LCID logical channel identifier
  • MAC media access control
  • the second information includes at least one of the following: the number of time slots occupied by the multi-slot transmission block TBoMS, the number of repetitions of the TBoMS transmission;
  • the second information is specifically used to indicate that the uplink data corresponding to the terminal device is transmitted through the TBoMS.
  • the second information includes but is not limited to the number of time slots occupied by TBoMS and the number of repetitions of TBoMS transmission. At this time, the second information is specifically used to indicate that the uplink data corresponding to the terminal device is transmitted through TBoMS.
  • the method further includes:
  • the third information is used to indicate that in the case of time division multiplexing transmission, the time slot occupied by the uplink data transmission corresponding to the terminal device is different from the time slot occupied by the message 1 transmission in the four-step random access process corresponding to the terminal device, or the time slot occupied by the uplink data transmission corresponding to the terminal device is different from the time slot occupied by the message A transmission in the two-step random access process corresponding to the terminal device.
  • a possible specific implementation method for resolving the conflict between the uplink data transmission timing and the access timing is provided, specifically, the network device sends a third information to the terminal device, and the third information is used to avoid the conflict between the uplink data transmission timing and the access timing of the terminal device.
  • the third information avoids the conflict between the uplink data transmission timing and the access timing by indicating that in the case of time division multiplexing transmission, the time slot occupied by the uplink data transmission is different from the time slot occupied by the message 1 (Msg1) transmission in the four-step random access process.
  • the third information avoids the conflict between the uplink data transmission timing and the access timing by indicating that in the case of time division multiplexing transmission, the time slot occupied by the uplink data transmission is different from the time slot occupied by the message A (MsgA) transmission in the two-step random access process.
  • MsgA message A
  • uplink data transmission uses continuous time slots.
  • the transmission resources of the uplink data may conflict with the access resources of the access opportunity, resulting in low initial access performance of the UE.
  • the time slot occupied by the uplink data transmission is avoided from the time slot occupied by the access opportunity, so as to avoid the conflict between the transmission resources of the uplink data and the access resources of the access opportunity, thereby improving the uplink transmission performance and enabling the UE to stably complete the initial access.
  • the third information is further used to indicate that in FDD spectrum, the time slots occupied by the uplink data transmission corresponding to the terminal device are continuous uplink time slots.
  • the FDD spectrum uses a frequency division multiplexing transmission mode.
  • the third information is also used to indicate that in the case of frequency division multiplexing transmission, the time slot occupied by the uplink data transmission corresponding to the terminal device is a continuous uplink time slot. It can be understood that, since the uplink data transmission and the random access message transmission adopt frequency division multiplexing transmission, there is no problem of conflict between the uplink data transmission timing and the access timing. In this scenario, the time slot occupied by the uplink data transmission corresponding to the terminal device can be a continuous uplink time slot, and the time slot occupied by the uplink data transmission and the time slot occupied by the access timing can be different or the same, which can be determined according to the needs of the network device.
  • the method further includes:
  • the first broadcast signal is used to enhance uplink data transmission corresponding to the terminal device determined by the first threshold; or,
  • the first broadcast signal is used to determine with the second threshold that the uplink data corresponding to the terminal device is transmitted starting from message 3 or message A.
  • a possible specific implementation method for determining uplink data transmission enhancement is provided, specifically, the network device sends a first broadcast signal, and the energy of the first broadcast signal enables the terminal device to determine its corresponding uplink data transmission enhancement.
  • the first broadcast signal can be a synchronization signal block (SSB), system information block 1 (SIB1) and other cell-level information required for the initial access process of the terminal device, and the energy of the first broadcast signal can be the signal quality.
  • SIB1 system information block 1
  • the uplink data transmission enhancement corresponding to the terminal device is determined.
  • the energy of the received first broadcast signal is measured to determine whether to request the uplink data transmission enhancement corresponding to the terminal device, so as to achieve the transmission performance enhancement of message 5 (Msg5) and subsequent uplink data.
  • the energy of the first broadcast signal is less than the second threshold, it is determined that the uplink data corresponding to the terminal device is transmitted and enhanced starting from message 3 (Msg3) or message A (MsgA).
  • the energy of the received first broadcast signal is measured to determine whether to request the uplink data transmission enhancement corresponding to the terminal device, so as to achieve message 3
  • the transmission performance of message A (Msg3) or message A (MsgA) and subsequent uplink data is enhanced.
  • the need to request the corresponding uplink data transmission enhancement of the terminal device can be determined by measuring the energy size of the first broadcast signal, so that the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the UE and the network device (satellite base station), improving the uplink transmission performance, and enabling the UE to stably complete initial access.
  • the first broadcast signal is also used together with the second threshold to determine that the uplink data corresponding to the terminal device starts uplink transmission enhancement from message 3 or message A and ends uplink transmission enhancement with an RRC reconfiguration message.
  • the first threshold is carried in the second broadcast signal, the first threshold is a threshold of a signal quality corresponding to the first broadcast signal or the second broadcast signal, and the signal quality includes any one or more of the following:
  • the threshold of reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, and signal to noise ratio SNR is the threshold of reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, and signal to noise ratio SNR.
  • a possible specific implementation of a first threshold is provided, specifically, the first threshold is carried in the second broadcast signal, and the first threshold is a threshold of the signal quality corresponding to the first broadcast signal or the second broadcast signal.
  • the signal quality corresponding to the broadcast signal can include but is not limited to reference signal receiving power (reference signal receiving power, RSRP), reference signal receiving quality (reference signal receiving quality, RSRQ), received signal strength indicator (received signal strength indicator, RSSI), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR), and signal to noise ratio (signal noise ratio, SNR).
  • the first threshold is carried in the broadcast signal and is the threshold of the signal quality corresponding to the broadcast signal.
  • the energy of the broadcast signal is measured by comparing the energy of the broadcast signal with the first threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 5 (Msg5) and subsequent uplink data.
  • the first threshold is carried in the second broadcast signal and is the threshold of the signal quality corresponding to the first broadcast signal or the second broadcast signal.
  • the energy of the first broadcast signal is measured by comparing the energy of the first broadcast signal with the first threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 5 (Msg5) and subsequent uplink data.
  • Msg5 message 5
  • the second threshold is carried in a third broadcast signal
  • the second threshold is a threshold of a signal quality corresponding to the message 3 or the message A
  • the signal quality includes any one or more of the following:
  • the threshold of reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, and signal to noise ratio SNR is the threshold of reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, and signal to noise ratio SNR.
  • a possible specific implementation of a second threshold is provided, specifically, the second threshold is carried in a third broadcast signal, and the second threshold is a threshold of the signal quality corresponding to message 3 or message A.
  • the signal quality corresponding to the broadcast signal may include but is not limited to reference signal receiving power (reference signal receiving power, RSRP), reference signal receiving quality (reference signal receiving quality, RSRQ), received signal strength indicator (received signal strength indicator, RSSI), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR), and signal to noise ratio (signal noise ratio, SNR).
  • the second threshold is carried in the broadcast signal and is the threshold of the signal quality corresponding to message 3 or message A.
  • the energy of the broadcast signal is measured by comparing the energy of the broadcast signal with the second threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • the second threshold is carried in the third broadcast signal and is the threshold of the signal quality corresponding to message 3 or message A.
  • the energy of the first broadcast signal is measured by comparing the energy of the first broadcast signal with the second threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • Msg3 message 3
  • MsgA message A
  • an embodiment of the present application provides a communication method, which can be performed by a communication device.
  • the communication device can be a device sold as a whole, or a chip (system) or circuit for a device, which is not limited in the present application.
  • the method includes:
  • the first broadcast signal is used to enhance uplink data transmission corresponding to the terminal device determined by the first threshold; or,
  • the first broadcast signal is used to determine with the second threshold that the uplink data corresponding to the terminal device is transmitted starting from message 3 or message A.
  • a communication method in which a network device sends a first broadcast signal, and the energy of the first broadcast signal enables a terminal device to determine that its corresponding uplink data transmission is enhanced.
  • the network device here may also be a processor/chip that can be used to execute computer execution instructions, and the embodiment of the present application does not limit this.
  • the first broadcast signal in the embodiment of the present application may be cell-level information necessary for the initial access process of the terminal device, such as a synchronization signal block (SSB), a system information block 1 (SIB1), etc., and the energy of the first broadcast signal may be signal quality.
  • SSB synchronization signal block
  • SIB1 system information block 1
  • the uplink data transmission enhancement corresponding to the terminal device is determined. It can be understood that in this case, by measuring the energy size of the received first broadcast signal, it is determined whether to request the uplink data transmission enhancement corresponding to the terminal device to achieve the transmission performance enhancement of message 5 (Msg5) and subsequent uplink data.
  • Msg5 message 5
  • the uplink data corresponding to the terminal device is transmitted and enhanced starting from message 3 (Msg3) or message A (MsgA). It can be understood that in this case, by measuring the energy size of the received first broadcast signal, it is determined whether to request the uplink data transmission enhancement corresponding to the terminal device to achieve the transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • Msg3 message 3
  • MsgA message A
  • the need to request the corresponding uplink data transmission enhancement of the terminal device can be determined by measuring the energy size of the first broadcast signal, so that the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the UE and the network device (satellite base station), improving the uplink transmission performance, and enabling the UE to stably complete initial access.
  • the first broadcast signal is also used together with the second threshold to determine that the uplink data corresponding to the terminal device starts uplink transmission enhancement from message 3 or message A and ends uplink transmission enhancement with an RRC reconfiguration message.
  • the first threshold is carried in the second broadcast signal, the first threshold is a threshold of a signal quality corresponding to the first broadcast signal or the second broadcast signal, and the signal quality includes any one or more of the following:
  • the threshold of reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, and signal to noise ratio SNR is the threshold of reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, and signal to noise ratio SNR.
  • a possible specific implementation of a first threshold is provided, specifically, the first threshold is carried in the second broadcast signal, and the first threshold is a threshold of the signal quality corresponding to the first broadcast signal or the second broadcast signal.
  • the signal quality corresponding to the broadcast signal can include but is not limited to reference signal receiving power (reference signal receiving power, RSRP), reference signal receiving quality (reference signal receiving quality, RSRQ), received signal strength indicator (received signal strength indicator, RSSI), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR), and signal to noise ratio (signal noise ratio, SNR).
  • the first threshold is carried in the broadcast signal and is the threshold of the signal quality corresponding to the broadcast signal.
  • the energy of the broadcast signal is measured by comparing the energy of the broadcast signal with the first threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 5 (Msg5) and subsequent uplink data.
  • the first threshold is carried in the second broadcast signal and is the threshold of the signal quality corresponding to the first broadcast signal or the second broadcast signal.
  • the energy of the first broadcast signal is measured by comparing the energy of the first broadcast signal with the first threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 5 (Msg5) and subsequent uplink data.
  • Msg5 message 5
  • the second threshold is carried in a third broadcast signal
  • the second threshold is a threshold of a signal quality corresponding to the message 3 or the message A
  • the signal quality includes any one or more of the following:
  • the threshold of reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, and signal to noise ratio SNR is the threshold of reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, and signal to noise ratio SNR.
  • a possible specific implementation of a second threshold is provided, specifically, the second threshold is carried in a third broadcast signal, and the second threshold is a threshold of the signal quality corresponding to message 3 or message A.
  • the signal quality corresponding to the broadcast signal may include, but is not limited to, reference signal receiving power (reference signal receiving power, RSRP), reference signal receiving quality (reference signal receiving quality, RSRQ), received signal strength indicator (received signal strength indicator, RSSI), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR), and signal to noise ratio (signal noise ratio, SNR).
  • the second threshold is carried in the broadcast signal and is the threshold of the signal quality corresponding to message 3 or message A.
  • the energy of the broadcast signal is measured by comparing the energy of the broadcast signal with the second threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • the second threshold is carried in the third broadcast signal and is the threshold of the signal quality corresponding to message 3 or message A.
  • the energy of the first broadcast signal is measured by comparing the energy of the first broadcast signal with the second threshold, and then it is determined whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve the transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • Msg3 message 3
  • MsgA message A
  • an embodiment of the present application provides a communication device, which includes a module or unit for executing any method as described in the first aspect.
  • the apparatus includes:
  • a communication unit configured to send first information to a network device, wherein the first information is used to request uplink data transmission enhancement corresponding to a terminal device, and the first information is carried in a radio resource control RRC connection establishment message of the terminal device;
  • the communication unit is further used to receive second information from the network device, where the second information is used to indicate the uplink data transmission enhancement corresponding to the terminal device.
  • the device further includes:
  • a processing unit is used to generate the first information.
  • the method executed by the above-mentioned processing unit and communication unit can refer to the method corresponding to the above-mentioned first aspect, which will not be repeated here.
  • an embodiment of the present application provides a communication device, which includes a module or unit for executing the method as described in any one of the second aspects.
  • the apparatus includes:
  • a communication unit configured to receive a first broadcast signal from a network device
  • a processing unit configured to determine, when the energy of the first broadcast signal is less than a first threshold, that uplink data transmission corresponding to the terminal device is enhanced;
  • the processing unit is further used to determine that the uplink data corresponding to the terminal device is to be transmitted enhanced starting from message 3 or message A when the energy of the first broadcast signal is less than a second threshold.
  • the method performed by the above-mentioned processing unit and communication unit can refer to the method corresponding to the above-mentioned second aspect, which will not be repeated here.
  • an embodiment of the present application provides a communication device, which includes a module or unit for executing the method as described in any one of the third aspects.
  • the apparatus includes:
  • a communication unit configured to receive first information from a terminal device, where the first information is used to request uplink data transmission enhancement corresponding to the terminal device, and the first information is carried in a radio resource control RRC connection establishment request message of the terminal device;
  • the communication unit is further used to send second information to the terminal device, where the second information is used to indicate the uplink data transmission enhancement corresponding to the terminal device.
  • the device further includes:
  • a processing unit is used to generate the second information.
  • the method executed by the above-mentioned processing unit and communication unit can refer to the method corresponding to the above-mentioned third aspect, which will not be repeated here.
  • an embodiment of the present application provides a communication device, which includes a module or unit for executing any method as described in the fourth aspect.
  • the apparatus includes:
  • a communication unit configured to send a first broadcast signal
  • the first broadcast signal is used to enhance uplink data transmission corresponding to the terminal device determined by the first threshold; or,
  • the first broadcast signal is used to determine with the second threshold that the uplink data corresponding to the terminal device is transmitted starting from message 3 or message A.
  • the device further includes:
  • a processing unit is used to generate the first broadcast signal.
  • the method executed by the above-mentioned processing unit and communication unit can refer to the method corresponding to the above-mentioned fourth aspect, which will not be repeated here.
  • the communication device is a communication device.
  • the communication unit may be a transceiver.
  • an input/output interface ; the processing unit may be at least one processor.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the communication device is a chip (system) or circuit used in a communication device.
  • the communication unit may be a communication interface (input/output interface), interface circuit, output circuit, input circuit, pin or related circuit on the chip (system) or circuit;
  • the processing unit may be at least one processor, processing circuit or logic circuit.
  • an embodiment of the present application provides a communication device, the communication device comprising a processor.
  • the processor is coupled to a memory and can be used to execute instructions in the memory to implement the method of any aspect of the first to fourth aspects and any possible implementation method.
  • the communication device also includes a memory.
  • the communication device also includes a communication interface, and the processor is coupled to the communication interface.
  • an embodiment of the present application provides a communication device, comprising: a logic circuit and a communication interface.
  • the communication interface is used to receive information or send information; the logic circuit is used to receive information or send information through the communication interface, so that the communication device executes the method of any aspect of the first to fourth aspects and any possible implementation method.
  • an embodiment of the present application provides a computer-readable storage medium, which is used to store a computer program (also referred to as code, or instructions); when the computer program is run on a computer, the method of any one of the above-mentioned first to fourth aspects and any possible implementation method is implemented.
  • a computer program also referred to as code, or instructions
  • an embodiment of the present application provides a computer program product, which includes: a computer program (also referred to as code, or instructions); when the computer program is executed, it enables the computer to execute any one of the above-mentioned first to fourth aspects and any possible implementation method.
  • a computer program also referred to as code, or instructions
  • an embodiment of the present application provides a chip, the chip includes a processor, the processor is used to execute instructions, when the processor executes the instructions, the chip executes the method of any aspect of the first to fourth aspects and any possible implementation method.
  • the chip also includes a communication interface, the communication interface is used to receive or send signals.
  • an embodiment of the present application provides a communication system, which includes at least one communication device as described in the fifth aspect, or the communication device as described in the sixth aspect, or the communication device as described in the seventh aspect, or the communication device as described in the eighth aspect, or the communication device as described in the ninth aspect, or the communication device as described in the tenth aspect, or the chip as described in the thirteenth aspect.
  • an embodiment of the present application provides a communication system, which includes a terminal device and a network device, wherein the terminal device is used to execute the method of any aspect of the first to second aspects above and any possible implementation method, and the network device is used to execute the method of any aspect of the third to fourth aspects above and any possible implementation method.
  • the process of sending information and/or receiving information in the above method can be understood as a process in which the processor outputs information, and/or a process in which the processor receives input information.
  • the processor can output the information to the transceiver (or communication interface, or sending module) so that it can be transmitted by the transceiver. After the information is output by the processor, it may also need to be processed otherwise before it reaches the transceiver.
  • the transceiver or communication interface, or sending module
  • the transceiver receives the information and inputs it into the processor. Furthermore, after the transceiver receives the information, the information may need to be processed otherwise before it is input into the processor.
  • the sending information mentioned in the above method can be understood as the processor outputting information.
  • the receiving information can be understood as the processor receiving input information.
  • the processor may be a processor specifically used to execute these methods, or a processor that executes these methods by executing computer instructions in a memory, such as a general-purpose processor.
  • the memory may be a non-transitory memory, such as a read-only memory (ROM), which may be integrated with the processor on the same chip or may be separately arranged on different chips.
  • ROM read-only memory
  • the at least one memory is located outside the device.
  • the at least one memory is located within the device.
  • part of the at least one memory is located inside the device, and another part of the memory is located outside the device.
  • the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together.
  • the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the terminal device and the network device, improving the uplink transmission performance, and enabling the terminal device to stably complete initial access.
  • FIG1A is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application.
  • FIG1B is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application.
  • FIG1C is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application.
  • FIG2A is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application.
  • FIG2B is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application.
  • FIG3A is a schematic diagram of a random access process provided by an embodiment of the present application.
  • FIG3B is a schematic diagram of a random access process provided by an embodiment of the present application.
  • FIG4 is a flow chart of a communication method provided in an embodiment of the present application.
  • FIG5 is a flow chart of a communication method provided in an embodiment of the present application.
  • FIG6 is a flow chart of a communication method provided in an embodiment of the present application.
  • FIG7 is a schematic diagram of a method for resolving timing conflicts provided by an embodiment of the present application.
  • FIG8 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • FIG9 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • FIG. 10 is a schematic diagram of the structure of a chip provided in an embodiment of the present application.
  • At least one (item) means one or more, “more than one” means two or more, “at least two (items)” means two or three and more than three, and "and/or” is used to describe the association relationship of associated objects, indicating that three relationships may exist.
  • a and/or B can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural.
  • the character “/” generally indicates that the previous and next associated objects are in an “or” relationship.
  • At least one of the following items” or similar expressions refers to any combination of these items, including any combination of single items or plural items.
  • At least one of a, b or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c", where a, b, c can be single or multiple.
  • indication may include direct indication, indirect indication, explicit indication, and implicit indication.
  • indication information may include direct indication, indirect indication, explicit indication, and implicit indication.
  • the information indicated by the indication information is referred to as the information to be indicated.
  • the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated.
  • the information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance.
  • the indication of specific information can also be achieved by means of the arrangement order of each information agreed in advance (for example, specified by the protocol), thereby reducing the indication overhead to a certain extent.
  • the information to be indicated can be sent together as a whole, or it can be divided into multiple sub-information and sent separately, and the sending period and/or sending time of these sub-information can be the same or different.
  • the specific sending method is not limited in this application.
  • the sending period and/or sending time of these sub-information can be pre-defined, for example, pre-defined according to the protocol, or can be configured by the transmitting end device by sending configuration information to the receiving end device.
  • Send can be understood as “output”
  • receiver can be understood as “input”.
  • Send information to A where "to A” only indicates the direction of information transmission, A is the destination, and does not limit “sending information to A” to direct transmission on the air interface.
  • Send information to A includes sending information directly to A, and also includes sending information to A indirectly through a transmitter, so “sending information to A” can also be understood as “outputting information to A”.
  • receiving information from A indicates that the source of the information is A, including receiving information directly from A, and also includes receiving information indirectly from A through a receiver, so “receiving information from A” can also be understood as “inputting information from A”.
  • the present application provides a communication method, which is applied to the field of communication technology.
  • it can be applied to random access in NTN communication scenarios.
  • some knowledge related to random access of NTN communication is first introduced below.
  • NTN communications represented by non-ground equipment such as satellites, drones, and high-altitude platforms play an irreplaceable role.
  • Satellite communication has the characteristics of long communication distance, large coverage area, and flexible networking. It can provide communication services for both fixed terminals and various mobile terminals. Since traditional ground networks cannot provide seamless coverage for terminal devices, especially in places where base stations cannot be deployed, such as the sea, desert, and air, NTN is introduced into the fifth generation (5G) mobile communication system. It provides seamless coverage for terminal devices by deploying base stations or part of the base station functions on high-altitude platforms or satellites. In addition, high-altitude platforms or satellites are less affected by natural disasters, which can improve the reliability of 5G systems. In NTN based on satellite deployment, satellites cover the ground through different beams to form satellite cells. At the same time, a terminal device can be covered by multiple satellite cells.
  • 5G fifth generation
  • Satellite communication systems can be divided into the following three types according to the satellite's orbital altitude:
  • Geostationary earth orbit (GEO) satellite communication system also known as synchronous orbit satellite system, medium earth orbit (MEO) satellite communication system and low earth orbit (LEO) satellite communication system.
  • GEO Geostationary earth orbit
  • MEO medium earth orbit
  • LEO low earth orbit
  • the GEO satellite orbit altitude is 35786km. Its main advantage is that it can remain stationary relative to the ground and provide a large coverage area.
  • the disadvantages are: 1) The GEO satellite orbit is far away from the earth, and the free space propagation loss is large, resulting in a tight communication link budget. In order to increase the transmission/reception gain, the satellite needs to be equipped with a larger diameter antenna; 2) The communication transmission delay is large, which can reach a round-trip delay of about 500ms, which cannot meet the needs of real-time services; 3) GEO orbit resources are relatively scarce, the launch cost is high, and it cannot provide coverage for the earth's polar regions.
  • MEO satellites are between 2000 and 35786 km.
  • the advantage is that global coverage can be achieved with a relatively small number of satellites, but its orbital altitude is higher than that of LEO, and the transmission delay is still larger than that of LEO satellite communications.
  • MEO satellites are mainly used for positioning and navigation.
  • LEO satellites The orbital altitude of LEO satellites is between 300 and 2000 km.
  • LEO satellites are lower than MEO and GEO orbital altitudes, and have the advantages of low data transmission delay, low transmission loss, and relatively low launch cost.
  • satellite operators compensate for the limitations of the communication capabilities of a single satellite by increasing the number of satellites.
  • the terminal device can be "visible" to multiple satellites that can communicate for a period of time. At this time, multiple satellites can provide communication services for the terminal device, which provides the basic conditions for multi-satellite collaborative transmission.
  • the technical solution provided in the embodiments of the present application can be applied to various communication systems, for example, satellite communication systems, systems integrating satellite communication and cellular networks.
  • the cellular network system may include, but is not limited to, 5G systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, advanced long term evolution (LTE-A) systems, new radio (NR) systems, evolution systems of NR systems, LTE-based access to unlicensed spectrum (LTE-U) systems on unlicensed bands, NR-based access to unlicensed spectrum (NR-U) systems on unlicensed bands, wireless local area networks (WLAN), wireless fidelity (WiFi), next generation communication systems or other communication systems.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • LTE-A advanced long term evolution
  • NR new radio
  • evolution systems of NR systems LTE-based access to unlicensed spectrum (LTE-U) systems on un
  • Satellite communication systems can include various non-terrestrial network systems, such as satellites or unmanned aircraft systems (UAS) platforms, etc., which transmit wireless frequencies, and they are not listed here one by one.
  • UAS unmanned aircraft systems
  • the NTN system may specifically be a satellite communication system or other non-terrestrial network system, and the communication method in the present solution may be applied in the field of satellite communication.
  • Figures 1A, 1B and 1C are architectural diagrams of several communication systems provided in embodiments of the present application.
  • one or more terminal devices may exist in the coverage area of a cell of the satellite.
  • the coverage area of the cell may be an area covered by one or more beams of the satellite, or an area at the same level as the cell in the NR system.
  • the ground base station (for example, the ground gNB) is used as the access network device; the satellite is used to realize signal relay transparent transmission; the NTN gateway is used to forward the signal from the satellite or the signal from the access network device.
  • the NTN gateway is located on the ground.
  • the terminal device sends the NR Uu wireless interface signal to the access network device through satellite relay transparent transmission and NTN gateway forwarding.
  • the ground access network device communicates with the ground core network device according to the terrestrial communication network technology in the traditional technology.
  • the ground base station for example, the ground gNB
  • the satellite is also used to realize signal relay transparent transmission.
  • the specific process is similar to the above process and will not be repeated here.
  • the ground base station, satellite and NTN gateway constitute an NTN access network device.
  • the satellite serves as an access network device or has the function of an access network device.
  • the ground terminal device sends a Uu wireless interface signal to the access network device (i.e., the satellite) through a service link with the satellite.
  • the satellite as an access network device, receives the Uu wireless interface signal from the terminal device and parses and processes the received signal.
  • the satellite exchanges information with the ground NTN gateway through a feeder link. For example, the satellite exchanges NG port information with the ground core network device.
  • the satellite generates NG port information and sends the NG port information to the core network through the ground NTN gateway.
  • the core network device generates NG port information and sends the NG port information to the satellite through the ground NTN gateway.
  • the satellite generates the following signals: a signal of the Uu port wireless interface and a signal of the satellite radio interface (SRI) on the feeder link between the NTN gateway and the satellite.
  • SRI satellite radio interface
  • the satellite and the NTN gateway form an NTN access network device.
  • FIG. 1C another example of a RAN architecture based on a regenerative satellite is shown.
  • the satellite serves as a distributed unit (DU) of the access network device
  • the ground base station e.g., gNB-CU
  • the ground terminal device sends a Uu wireless interface signal to the DU (i.e., satellite) of the access network device through a service link with the satellite.
  • the DU (i.e., satellite) of the access network device receives and parses the NR-Uu wireless interface signal from the terminal device.
  • the DU of the access network device generates F1 information, and the DU of the access network device sends F1 port information to the CU of the access network device through the feeder link and the NTN gateway.
  • the CU of the access network device generates F1 port information, and the CU of the access network device sends F1 port information to the DU of the access network device through the NTN gateway and the feeder link.
  • the CU of the ground access network device communicates with the ground core network device according to the terrestrial communication network technology in the traditional technology.
  • the satellite generates the following signals: the signal of the Uu port wireless interface, and the signal of the satellite wireless interface on the feeder link between the NTN gateway and the satellite.
  • the feeder link transmits the F1 port information.
  • the ground base station, satellite and NTN gateway form an NTN access network device.
  • the satellites in the above system can be replaced by other NTN devices such as high altitude platform stations (HAPS), and this application does not impose any restrictions on this.
  • HAPS high altitude platform stations
  • Terminal device A mobile device that supports the 5G new air interface, typically a user terminal, wearable device, etc. It can access the satellite network through the air interface and initiate calls, surf the Internet, and other services.
  • 5G base station mainly provides wireless access services, dispatches wireless resources to access terminals, provides reliable wireless transmission protocols and data encryption protocols, etc.
  • 5G core network including user access control, mobility management, session management, user security authentication, billing and other services. It consists of multiple functional units, which can be divided into control plane and data plane functional entities. Among them, the access and mobility management unit (access and mobility management unit)
  • the location management function (AMF) is responsible for user access management, security authentication, and mobility management.
  • the location management function (LMF) is responsible for managing and controlling the location service requests of the target terminal and processing location-related information.
  • the user plane function (UPF) is responsible for managing the transmission of user plane data, traffic statistics, and other functions.
  • Ground station responsible for forwarding signaling and business data between satellite base stations and 5G core network.
  • 5G New Radio The wireless link between user equipment and base stations.
  • Xn interface It is the interface between 5G base stations and is mainly used for signaling interactions such as switching.
  • NG interface It is the interface between the 5G base station and the 5G core network, which mainly interacts with the core network's non-access stratum (NAS) and other signaling, as well as user business data.
  • NAS non-access stratum
  • the technical solution provided in this application mainly involves two execution entities, namely network equipment and terminal equipment, and can be applied to communication systems such as 5G, especially in the communication process of non-terrestrial networks.
  • the terminal devices involved in the embodiments of the present application include but are not limited to being connected via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (DSL), digital cables, direct cable connections; and/or another data connection network; and/or via wireless interfaces, such as: for cellular networks, wireless local area networks (WLAN), digital television networks such as digital video broadcast-handheld (DVB-H) networks, satellite networks, amplitude modulation-frequency modulation (AM-FM) broadcast transmitters; and/or another terminal device configured to receive/send communication signals; and/or an Internet of Things (IoT) device.
  • a terminal device configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", “wireless terminal” or "mobile terminal”.
  • terminal equipment examples include, but are not limited to, satellite or cellular telephones; personal communications system (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; personal digital assistants (PDAs) that may include radiotelephones, pagers, Internet/intranet access, web browsers, notepads, calendars, and/or global positioning system (GPS) receivers; and conventional laptop and/or handheld receivers or other electronic devices that include radiotelephone transceivers.
  • Terminal equipment may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.
  • UE user equipment
  • the terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a PDA, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved public land mobile network (PLMN), etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal area network
  • PLMN future evolved public land mobile network
  • the network device involved in the embodiments of the present application can provide communication coverage in a specific geographical area, and can communicate with one or more terminal devices located in the coverage area, and can also be used to communicate with one or more base stations with partial terminal functions (such as communication between a macro base station and a micro base station, such as an access point).
  • the network device can be a base station (base transceiver station, BTS) in a satellite, an evolved base station (evolved Node B, eNB) in an LTE system, or a next generation base station node (next generation node base station, gNB) in a 5G system or NR system, as well as other satellite base stations and satellite relay nodes.
  • the network device can also be an access point (access point, AP), a transport node (transport point, TRP), a central unit (central unit, CU) or other network entities, and can include some or all of the above network entity functions.
  • the device with communication function in the network/system in the embodiment of the present application can be called a communication device.
  • the communication device may include a network device and a terminal device with communication function, and the network device and the terminal device may be the specific devices described above, which will not be repeated here; the communication device may also include other devices in the communication system, such as other network entities such as a network controller and a mobile management entity, which is not limited in the embodiment of the present application.
  • the two descriptions of "satellite” and “satellite network equipment” are equivalent. That is, the satellite mentioned in this application refers to a collection of satellites and other network equipment related to satellite communications.
  • a cell in the NTN system can be the projection area of a satellite beam on the ground, or the projection area of multiple satellite beams on the ground, or it can be a partial area of the projection area of one beam or multiple beams on the ground, and the embodiments of the present application are not limited to this.
  • FIG. 2A is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application.
  • the communication system includes a core network device, two base stations and eight UEs, such as the core network device (CN), base station 1 and base station 2, and UE1 to UE8 in FIG2A .
  • base station 1 can send downlink signals such as configuration information or downlink control information (DCI) to UE1 to UE6, and UE1 to UE6 can send uplink signals such as SRS or physical uplink shared channel (PUSCH) to base station 1.
  • Base station 1 can also send downlink signals to UE7 to UE8 through base station 2, and UE7 to UE8 can send uplink signals to base station 1 through base station 2.
  • DCI downlink control information
  • PUSCH physical uplink shared channel
  • Base station 2 can send downlink signals such as configuration information or DCI to UE7 to UE8, and UE7 to UE8 can send uplink signals such as SRS or PUSCH to base station 2. It can be understood that for the communication method between UEs, reference can be made to the relevant descriptions in FIG1A , FIG1B and FIG1C above, which will not be described in detail here.
  • Fig. 2A exemplarily shows two base stations and eight UEs, as well as communication links between the communication devices.
  • the communication system may include multiple base stations, and each base station may include other numbers of UEs within its coverage area, such as more or fewer UEs, etc., which is not limited in this application.
  • Each of the above-mentioned communication devices can be configured with multiple antennas.
  • the multiple antennas may include at least one transmitting antenna for sending signals and at least one receiving antenna for receiving signals, etc.
  • the embodiment of the present application does not limit the specific structure of each communication device.
  • the communication system may also include other network entities such as a network controller and a mobility management entity, but the embodiment of the present application is not limited thereto.
  • the description of the terminal equipment in this communication system can refer to the description of the terminal equipment in the above Figures 1A, 1B and 1C
  • the description of the access network equipment and core network equipment in this communication system can refer to the description of the network equipment in the above Figures 1A, 1B and 1C, which will not be repeated here.
  • the access network equipment can be a base station (such as a gNB) with a centralized unit (CU) and distributed unit (DU) separated architecture.
  • a base station such as a gNB
  • CU centralized unit
  • DU distributed unit
  • FIG. 2B is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application.
  • CU and DU can be understood as the division of the base station from the perspective of logical functions.
  • CU and DU can be physically separated or deployed together. Multiple DUs can share one CU.
  • One DU can also be connected to multiple CUs (not shown in the figure).
  • CU and DU can be connected through an interface, such as an F1 interface.
  • CU and DU can be divided according to the protocol layer of the wireless network. For example, the functions of the radio resource control (RRC), service data adaptation protocol stack (SDAP) and packet data convergence protocol (PDCP) layer are set in the CU, while the functions of the radio link control (RLC), media access control (MAC) layer, physical (PHY) layer, etc. are set in the DU.
  • RRC radio resource control
  • SDAP service data adaptation protocol stack
  • PDCP packet data convergence protocol
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • CU or DU can be divided into functions with more protocol layers.
  • CU or DU can also be divided into partial processing functions with protocol layers.
  • some functions of the RLC layer and the functions of the protocol layers above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are set in the DU.
  • the functions of the CU or DU can also be divided according to the service type or other system requirements.
  • the functions whose processing time needs to meet the delay requirement are set in the DU, and the functions that do not need to meet the delay requirement are set in the CU.
  • the CU can also have one or more functions of the core network.
  • One or more CUs can be set centrally or separately.
  • the CU can be set on the network side for centralized management.
  • the DU can have multiple radio frequency functions, or the radio frequency functions can be set remotely.
  • the functions of the CU can be implemented by one entity or by different entities.
  • the functions of the CU can be further divided, for example, the control plane (CP) and the user plane (UP) are separated, that is, the control plane (CU-CP) of the CU and the user plane (CU-UP) of the CU.
  • the CU-CP and the CU-UP can be implemented by different functional entities, and the CU-CP and the CU-UP can be coupled with the DU to jointly complete the functions of the base station.
  • CU-CP is responsible for control plane functions, mainly including RRC and PDCP-C.
  • PDCP-C is mainly responsible for encryption and decryption, integrity protection, data transmission, etc. of control plane data.
  • CU-UP is responsible for user plane functions, mainly including SDAP and PDCP-U.
  • SDAP is mainly responsible for processing the data of the core network and mapping the data flow to the bearer.
  • PDCP-U is mainly responsible for encryption and decryption, integrity protection, header compression, sequence number maintenance, data transmission, etc. of the data plane.
  • CU-CP and CU-UP are connected through the E1 interface.
  • CU-CP represents the gNB and connects to the core network through the Ng interface. It is connected to DU through F1-C (control plane).
  • CU-UP is connected to DU through F1-U (user plane).
  • F1-C control plane
  • F1-U user plane
  • PDCP-C is also in CU-UP.
  • FIG. 1A , FIG. 1B , FIG. 1C , FIG. 2A , and FIG. 2B may be applicable to other forms of communication systems, which will not be described in detail below.
  • FIG3A it is a contention-based four-step random access, and its specific process is as follows:
  • the random access process can be divided into two types: contention-based random access and non-contention-based random access. If the random access preamble is selected by the MAC of the UE, it is a contention-based random access; if the random access preamble is allocated by control signaling, it is a non-contention-based random access.
  • the available physical random access channel (PRACH) resource set is configured to the UE by the network side through system information.
  • the PRACH resources include the time domain resources of the PRACH and the frequency domain resources of the PRACH.
  • the UE randomly selects one from the available random access preambles to send.
  • the physical layer physical access channel index is used to indicate the physical random access channel (PRACH) corresponding to which subframe in the system frame the terminal device can send the preamble code.
  • the terminal device can use the physical access channel index to find the corresponding table and determine the preamble code and available physical resources.
  • Random access initialization requires configuration of parameters, which include: the PRACH resource set that can be used to transmit the random access preamble (such as: PRACH-Config Index); the available random access preamble groups (Group A or Group B) and the available preamble sets in each group; the maximum number of preamble transmissions; the initial transmission power of the preamble; the power increase step; the random access response window; the maximum number of retransmissions of the hybrid automatic repeat request (HARQ) of the third message Msg3; and the contention resolution timer.
  • the PRACH resource set that can be used to transmit the random access preamble such as: PRACH-Config Index
  • the available random access preamble groups Group A or Group B
  • the available preamble sets in each group the maximum number of preamble transmissions
  • the initial transmission power of the preamble the power increase step
  • the random access response window the maximum number of retransmissions of the hybrid automatic repeat request (HARQ) of the third message Msg3
  • HARQ hybrid automatic repeat request
  • the terminal device After obtaining the above parameters, the terminal device performs the following operations: clearing the third message Msg3 cache; setting the number of preamble code transmissions to 1; setting the back-off parameter value saved by the terminal device to 0ms, and entering the random access resource selection phase.
  • the terminal device only performs one random access process at any one time. If the terminal device receives a newly initiated random access request during a random access process, the implementation on the terminal device side decides whether to continue the ongoing random access process or initiate a new random access process.
  • the terminal device sends a random access preamble to the network device, and correspondingly, the network device receives the random access preamble from the terminal device.
  • the random access preamble (RAP) is carried in the first message Msg1.
  • the main function of RAP is to inform the network device that there is a random access request and enable the network device to estimate the transmission delay between it and the terminal device, so that the access network device can calibrate the uplink advance amount and inform the terminal device of the calibration information through the timing advance command.
  • the first message Msg1 can also be called a random access preamble.
  • RAP can also be used to indicate the sending of an on-demand system message request, or to indicate the sending of a beam failure recovery request, etc., which is not limited in this application.
  • RAP can have a corresponding relationship with one or more on-demand system message requests, or RAP can have a corresponding relationship with one or more beam failure recovery requests.
  • the terminal device can pre-configure the RAP, or receive the RAP configured by the access network device.
  • the network device sends a random access response to the terminal device, and correspondingly, the terminal device receives the random access response from the network device.
  • the terminal device can monitor the PDCCH using the random access radio network temporary identifier (RA-RNTI). If it receives its own scheduling information, namely downlink control information (DCI), the terminal device receives the random access response (RAR) message sent by the network device on the physical downlink shared channel (PDSCH) according to the DCI information.
  • DCI information includes relevant contents such as resource block (RB) allocation information and modulation and coding scheme (MCS).
  • the random access response is carried in the second message Msg2.
  • the terminal device After the terminal device sends the Preamble, it will monitor the corresponding PDCCH according to the RA-RNTI value corresponding to the preamble in the RAR response window. If the Preamble carried in the response received by the terminal device is consistent with the Preamble sent by Msg1, it stops monitoring the RAR. Specifically, the network device can send the RAR to the terminal device via the PDSCH.
  • the RAR includes the uplink timing advance, the uplink grant (UL grant) allocated for the third message Msg3, the temporary cell radio network temporary identifier (cell radio network temporary identifier, temporary C-RNTI, referred to as TC-RNTI) allocated by the network side, etc.
  • the PDCCH carrying the second message Msg2 scheduling message is scrambled with RA-RNTI.
  • the terminal device sends a third message Msg3 to the network device, and correspondingly, the network device receives the third message Msg3 sent by the terminal device.
  • the terminal device sends a third message Msg3 to the network device via PUSCH according to the uplink grant and uplink timing advance information in the second message Msg2. It should be understood that the content of the third message Msg3 may also be different depending on the different terminal device states and application scenarios.
  • the network device Since the network device sends the MAC PDU to multiple terminal devices in step S303, the RAR received by each terminal device It can be different, and accordingly, the behavior of each terminal device may also be different.
  • each terminal device After each terminal device monitors its own RAR, it can send a third message Msg3 to the access network device according to the specific content contained in the RAR.
  • the third message Msg3 can be divided into the following types: RRC connection request, tracking area data update, resource scheduling request, etc.
  • the following table 1 gives some examples of the third message Msg3:
  • the network device sends a contention resolution, ie, a fourth message Msg4, to the terminal device.
  • the terminal device receives the contention resolution from the network device.
  • contention will occur. At most only one terminal device can access successfully among the terminal devices competing for the same resources. At this time, the network device sends a contention resolution message to the terminal device via PDSCH.
  • the terminal device After sending the third message Msg3, the terminal device starts the contention resolution timer (mac-contention resolution timer) and uses the Temporary C-RNTI indicated in the RAR or the C-RNTI pre-configured by the network device to monitor the PDCCH. If the terminal device receives the contention resolution message (and contention resolution) sent to it from the network device before the contention resolution timer times out, the random access process is considered successful. Before the contention resolution timer times out, the network device can notify the terminal device to retransmit the third message Msg3. After resending the third message Msg3, the terminal device will restart the contention resolution timer.
  • the contention resolution timer (mac-contention resolution timer) and uses the Temporary C-RNTI indicated in the RAR or the C-RNTI pre-configured by the network device to monitor the PDCCH. If the terminal device receives the contention resolution message (and contention resolution) sent to it from the network device before the contention resolution timer times out, the random access process is considered successful. Before the contention resolution timer
  • the fourth message Msg4 carries the UE contention resolution ID through the MAC layer control unit.
  • the MAC CE contains the common control channel (CCCH) service data unit (SDU) transmitted in the third message Msg3, that is, the RRC connection request or RRC connection reestablishment request.
  • the UE compares it with the content sent in the third message Msg3. If the two are the same or the content in the MAC CE belongs to part of the information sent in the third message Msg3 (optionally, the part of the information includes the terminal device identifier), it is determined that the contention resolution is successful.
  • the fourth message Msg4 uses the PDCCH scheduling scrambled by the temporary C-RNTI (TC-RNTI). After the contention resolution is successful, the temporary C-RNTI (TC-RNTI) is upgraded to the UE's C-RNTI.
  • the UE has previously allocated C-RNTI, and the third message Msg3 also transmits C-RNTI to the base station through MAC CE.
  • the base station schedules the fourth message Msg4 with the PDCCH scrambled by C-RNTI.
  • the contention resolution is completed.
  • the specific content of the fourth message Msg4 has nothing to do with contention resolution (although the specific content of the fourth message Msg4 has nothing to do with contention resolution at this time, since the fourth message Msg4 is scheduled by PDCCH, it can also be understood that the fourth message Msg4 has the function of contention resolution).
  • the fourth message Msg4 also adopts the HARQ mechanism, but only the UE that successfully decodes the fourth message Msg4 and successfully resolves the contention will feedback ACK, and no feedback will be given in other cases.
  • FIG3B it is a contention-based two-step random access, and its specific process is as follows:
  • the terminal device sends MsgA to the network device, and correspondingly, the network device receives MsgA from the terminal device.
  • the MsgA includes a random access signal and payload data.
  • the random access signal may include a preamble and/or a demodulation reference signal (DMRS).
  • DMRS demodulation reference signal
  • the random access signal is used to receive the payload data.
  • the transmission boundary of the payload data (such as the starting position and the ending position of the time slot for transmitting the payload data) or demodulation may be determined according to the random access signal.
  • the payload data may be control plane data and/or user plane data.
  • the payload data may correspond to the content included in the third message Msg3 in the above four-step random access mechanism.
  • the payload data may include any one of an RRC connection request, an identifier of a terminal device, a scheduling request, a buffer status report (BSR), and real business data.
  • BSR buffer status report
  • the identifier of the terminal device may be a C-RNTI, a temporary mobile user identifier (serving-temporary mobile subscriber identity, s-TMSI), an identifier of a terminal in an inactive state (resume Identity), and so on. What identifier is carried specifically depends on different random access triggering events and is not limited. It should be noted that the identifier of the terminal device may be carried entirely in the payload data, or may be carried partially in the payload data and partially in the random access signal. Among them, carried in the random access signal may be understood as different sequences or the same sequence but different cyclic shifts to represent different bit values. By way of example, the following Table 2 gives the identifiers of terminal devices corresponding to different random access triggering events:
  • the network device After receiving MsgA, the network device decodes the random access signal and the payload data, and obtains the decoding status including: (1) “successful decoding”; (2) “unsuccessful decoding”.
  • the following Table 3 shows the possible decoding results:
  • the possible relationship between the resource where the random access signal is located and the resource where the payload data is located is as follows: (1) there is an overlapping area in the time domain, but no overlapping area in the frequency domain; (2) there is no overlapping area in the time domain, but there may or may not be an overlapping area in the frequency domain.
  • the resource where the random access signal is located and the resource where the payload data is located may be configured by the network device.
  • the third message Msg3 mentioned in the present application may refer to the third message Msg3 in the above four-step random access process, or may refer to the payload data in MsgA in the above two-step random access process, and the present application does not impose any restrictions on this.
  • the network device sends MsgB to the terminal device, and correspondingly, the terminal device receives MsgB from the network device.
  • MsgB is used to carry a response message for the random access signal and payload data.
  • the response message may include at least one of the following: temporary C-RNTI information, timing advance command (TA command) information, uplink authorization information, contention resolution ID information, etc.
  • TA command timing advance command
  • uplink authorization information e.g., uplink authorization information
  • contention resolution ID e.g., uplink authorization information
  • the contention resolution ID may be part or all of the payload data.
  • the response message also includes a control plane message (which can also be regarded as a reply message based on scheduled transmission).
  • the RAR may also include at least one of the following: RRC connection message, RRC re-establishment message, RRC recovery message, etc.
  • the response message described in the present application refers to a response message to a request for random access, and may also be referred to as a random access response (message).
  • the UE needs to send the fifth message Msg5 (i.e., RRC setup complete, indicating that the RRC establishment is complete), authentication NAS signaling, UE capability reporting, security and other signaling transmissions.
  • Msg5 i.e., RRC setup complete, indicating that the RRC establishment is complete
  • Uplink signaling such as Msg5 supports fragmentation and retransmission.
  • fragmentation can be performed to reduce the number of bits carried by each slice, and retransmission can be performed to improve transmission performance.
  • the number of transmitted bits is greater than the number of bits that can be carried by a single time slot, fragmentation is required to achieve large-load transmission.
  • the transport block over multi-slot (TBoMS) technology can be used to enhance uplink transmission, supporting the transmission of one transport block (TB) in multiple time slots without introducing the increased packet header load caused by fragmentation and requiring multiple DCI scheduling.
  • TBoMS uses continuous time slots for transmission in frequency division duplex (FDD), which may conflict with random access channel occasion (RO) access resources in scenarios where the uplink budget is limited and uplink channel resources are limited.
  • FDD frequency division duplex
  • the satellite acts as a base station and configures random access resources to the UE to achieve random access of the UE.
  • the satellite moves faster than the ground and the signal propagation distance is longer, which makes the signal path loss of the satellite as a base station greater, and the uplink and downlink transmission performance is limited, resulting in low initial access performance of the UE.
  • an embodiment of the present application provides a new communication method, which carries information requesting enhanced uplink data transmission corresponding to a terminal device in an RRC connection establishment message, so that the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the UE and the network device (satellite base station), improving the uplink transmission performance, and enabling the UE to stably complete initial access.
  • Figure 4 is a flow chart of a communication method provided in an embodiment of the present application.
  • the communication method is applied to the field of communication technology, such as random access in an NTN communication scenario, and the communication method includes but is not limited to the following steps:
  • the terminal device sends first information to the network device, and correspondingly, the network device receives the first information from the terminal device.
  • the network device sends second information to the terminal device, and correspondingly, the terminal device receives the second information from the network device.
  • the network device in the embodiment of the present application is a device equipped with a processor/chip that can be used to execute computer-executable instructions, and can also be a processor/chip that can be used to execute computer-executable instructions, and the embodiment of the present application does not limit this.
  • the network device can be an access network device, such as a base station, a transmission point TRP, etc., and specifically can also be the access network device in Figures 1A, 1B, 1C, 2A, and 2B (including but not limited to any device in base station 1 and base station 2), which is used to execute the communication method in the embodiment of the present application to improve the uplink transmission performance and enable the UE to stably complete the initial access.
  • the terminal device in the embodiment of the present application is a device equipped with a processor/chip that can be used to execute computer-executable instructions, or it can be a processor/chip that can be used to execute computer-executable instructions, and the embodiment of the present application does not limit this.
  • the terminal device can be a handheld terminal (such as a mobile phone, a tablet computer, etc.), or it can be a vehicle-mounted terminal (such as a wireless terminal in unmanned driving, etc.), etc., and specifically it can also be the terminal device in Figures 1A, 1B, 1C, and 2A above (including but not limited to any device such as UE1 to UE8), which is used to execute the communication method in the embodiment of the present application to improve the uplink transmission performance and enable the UE to stably complete the initial access.
  • a handheld terminal such as a mobile phone, a tablet computer, etc.
  • vehicle-mounted terminal such as a wireless terminal in unmanned driving, etc.
  • the above-mentioned first information is used to request the corresponding uplink data transmission enhancement of the terminal device.
  • the first information is carried in a radio resource control (RRC) connection establishment message of the terminal device.
  • RRC radio resource control
  • the first information specifically requests how to enhance uplink data transmission, and the embodiment of the present application does not limit this.
  • it may be a request to transmit a transport block (TB) of uplink data corresponding to the terminal device over multiple time slots and support repeated transmission through transport block over multi-slot (TBoMS) technology, or it may be a request to repeatedly send a TB of uplink data corresponding to the terminal device over multiple time slots, or it may be a request to scale the data volume (Ninfo) through the transport block scaling factor (TB scaling), and enhance the uplink data transmission performance by further reducing the bit rate through the encoded rate matching.
  • TB transport block
  • Ninfo transport block scaling factor
  • the second information is used to indicate the uplink data transmission enhancement corresponding to the terminal device.
  • the second information specifically indicates how to perform uplink data transmission enhancement, and the embodiments of the present application do not limit this.
  • the first information requests that uplink data transmission enhancement be performed in a certain specific manner (such as TBoMS technology)
  • the second information is used to indicate that uplink data transmission enhancement be performed in the manner requested by the first information.
  • the first information only requests uplink data transmission enhancement, but does not request uplink data transmission enhancement in a certain specific manner
  • the second information is used to indicate that the manner in which uplink data transmission enhancement is performed can be determined by the network device.
  • the second information includes but is not limited to the number of time slots occupied by TBoMS and the number of repetitions of TBoMS transmission. At this time, the second information is specifically used to indicate that the uplink data corresponding to the terminal device is transmitted through TBoMS.
  • the terminal device has not reported its own capabilities, and the network device does not know which capabilities the terminal device supports, and cannot determine whether the uplink transmission performance of the terminal device needs to be enhanced.
  • the terminal device can report its own uplink transmission performance capability during the initial access process of the RRC connection, so that the network device can also learn the uplink transmission performance of the terminal device and determine that the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the UE and the network device (satellite base station), improving the uplink transmission performance, and enabling the UE to stably complete the initial access.
  • the first information used to request the enhancement of the uplink data transmission corresponding to the terminal device can be reported to the network device during the initial access process of the RRC connection of the terminal device, so that the network device can learn the uplink transmission performance of the terminal device as early as possible during the initial access process of the RRC connection, and then determine that the uplink transmission performance of the terminal device needs to be enhanced, so that the UE can stably complete the initial access.
  • the first information can be reported to the network device through the RRC connection establishment message during the initial access process of the RRC connection, and the first information can also be reported to the network device through other messages during the initial access process of the RRC connection, and the embodiments of the present application are not limited to this.
  • the first information is carried in an RRC connection establishment message of the terminal device, and specifically may be carried in different messages, which are described below in different situations:
  • the first information is carried in message 3 and the second information is carried in message 4.
  • message 3 in the embodiment of the present application can also be called the third message, or Msg3
  • message 4 in the embodiment of the present application can also be called the fourth message, or Msg4. They have the same meaning and will not be repeated in the following text.
  • the terminal device sends message 3 to the network device, and the message 3 carries the first information. Accordingly, the network device receives message 3 from the terminal device, thereby obtaining the first information.
  • the network device sends message 4 to the terminal device, and the message 4 carries the second information. Accordingly, the terminal device receives message 4 from the network device, thereby obtaining the second information.
  • message 3 is used to carry the first information to request uplink data transmission enhancement, so that the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced
  • message 4 is used to carry the second information to indicate uplink data transmission enhancement, which can enhance the transmission performance of message 5 (Msg5) and subsequent uplink data, thereby overcoming the signal path loss of the communication signal between the terminal device and the network device, improving the uplink transmission performance, and enabling the terminal device to stably complete the initial access.
  • the first information is carried in message A and the second information is carried in message B.
  • message A in the embodiment of the present application can also be called MsgA
  • message B in the embodiment of the present application can also be called MsgB. They have the same meaning and will not be repeated in the following text.
  • the terminal device sends message A to the network device, and the message A carries the first information. Accordingly, the network device receives message A from the terminal device, thereby obtaining the first information.
  • the network device sends message B to the terminal device, and the message B carries the second information. Accordingly, the terminal device receives message B from the network device, thereby obtaining the second information.
  • the first information (message A) may be in a physical random access channel (PRACH), that is, it may be MsgA PRACH, which may be specifically represented by adding a sequence, a bit, etc. in the PRACH.
  • PRACH physical random access channel
  • the first information (message A) may also be implicitly expressed using a specific preamble.
  • the first information (message A) may also be MsgA PUSCH.
  • message A is used to carry the first information to request uplink data transmission enhancement, so that the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced
  • message B is used to carry the second information to indicate uplink data transmission enhancement, which can enhance the transmission performance of subsequent uplink data, thereby overcoming the signal path loss of the communication signal between the terminal device and the network device, improving the uplink transmission performance, and enabling the terminal device to stably complete the initial access.
  • how to request uplink data transmission enhancement may be implemented in different ways, which are described below in different situations:
  • the uplink data transmission enhancement request is implemented through the first information.
  • the first information includes one bit, and by assigning different values to the one bit, it can indicate requesting or not requesting uplink data transmission enhancement corresponding to the terminal device.
  • the value of the one bit is the first value, indicating a request for uplink data transmission enhancement corresponding to the terminal device.
  • the value of the one bit is a second value, indicating that uplink data transmission enhancement corresponding to the terminal device is not requested, and the first value and the second value are different.
  • the value of this bit is a null value, indicating that uplink data transmission enhancement corresponding to the terminal device is not requested; or, a bit included in the above-mentioned first information does not exist, which may also indicate that uplink data transmission enhancement corresponding to the terminal device is not requested.
  • the one bit is set to 1 (ie, the first value is 1), indicating that the uplink data transmission enhancement corresponding to the terminal device is requested, and the one bit is set to 0 (ie, the second value is 0), indicating that the uplink data transmission enhancement corresponding to the terminal device is not requested.
  • the one bit can be a reserved bit in a multiplexed RRC connection establishment message, for example, a reserved bit in the field "ul-EnhancementReq" in a multiplexed RRC connection establishment message, enabling the function of indicating a request for uplink data transmission enhancement; the one bit can also be a newly added bit in the RRC connection establishment message, and the embodiments of the present application do not limit this.
  • the uplink data transmission enhancement request is implemented through the logical channel ID (LCID) in the MAC layer data packet.
  • LCID logical channel ID
  • the RRC connection establishment message used to carry the uplink data transmission enhancement request is carried in the MAC layer data packet.
  • the header of the MAC layer data packet includes the logical channel identifier corresponding to the uplink data transmission enhancement corresponding to the terminal device
  • the logical channel identifier is used to indicate the uplink data transmission enhancement corresponding to the requesting terminal device.
  • the terminal device and the network device will further perform including but not limited to the following steps:
  • the network device also sends third information to the terminal device, and correspondingly, the terminal device receives the third information from the network device.
  • the third information is used to indicate that in the case of time division multiplexing transmission, the time slot occupied by the uplink data transmission corresponding to the terminal device is different from the time slot occupied by the message 1 transmission in the four-step random access process corresponding to the terminal device, or the time slot occupied by the uplink data transmission corresponding to the terminal device is different from the time slot occupied by the message A transmission in the two-step random access process corresponding to the terminal device.
  • the third information avoids the conflict between the uplink data transmission timing and the access timing by indicating that in the case of time division multiplexing transmission, the time slot occupied by the uplink data transmission is different from the time slot occupied by the message 1 (Msg1) transmission in the four-step random access process.
  • the third information avoids the conflict between the uplink data transmission timing and the access timing by indicating that in the case of time division multiplexing transmission, the time slot occupied by the uplink data transmission is different from the time slot occupied by the message A (MsgA) transmission in the two-step random access process.
  • uplink data transmission uses continuous time slots.
  • the transmission resources of the uplink data may conflict with the access resources of the access opportunity, resulting in low initial access performance of the UE.
  • the time slot occupied by the uplink data transmission is avoided from the time slot occupied by the access opportunity, so as to avoid the conflict between the transmission resources of the uplink data and the access resources of the access opportunity, thereby improving the uplink transmission performance and enabling the UE to stably complete the initial access.
  • the third information is also used to indicate that in the case of frequency division multiplexing transmission, the time slots occupied by the uplink data transmission corresponding to the terminal device are continuous uplink time slots.
  • the transmission mode adopted for uplink data transmission and random access message transmission under FDD spectrum is FDD frequency division multiplexing transmission, there is no problem of conflict between uplink data transmission timing and access timing.
  • the time slot occupied by uplink data transmission corresponding to the terminal device can be a continuous uplink time slot, and the time slot occupied by uplink data transmission can be different from or the same as the time slot occupied by the access timing, which can be determined according to the needs of the network equipment.
  • the terminal device and the network device further perform including but not limited to the following steps:
  • the network device also sends a first broadcast signal, and correspondingly, the terminal device receives the first broadcast signal from the network device.
  • the terminal device determines the uplink data transmission enhancement corresponding to the terminal device according to the energy of the first broadcast signal.
  • the first broadcast signal may be cell-level information required for the initial access process of the terminal device, such as a synchronization signal block (SSB), a system information block 1 (SIB1), etc.
  • the energy of the first broadcast signal may be signal quality, and the signal energy may include but is not limited to reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), received signal strength indicator (RSSI), signal to interference plus noise ratio (SINR), and signal noise ratio (SNR).
  • RSRP reference signal receiving power
  • RSRQ reference signal receiving quality
  • RSSI received signal strength indicator
  • SINR signal to interference plus noise ratio
  • the difference between uplink and downlink in frequency division duplexing (FDD) scenarios is mainly due to small-scale fading of the channel. Since the NTN channel is biased towards the line of sight (LOS) path, the transmission distance, angle and many other statistical characteristics between the uplink and downlink are basically the same. It can be considered that the large-scale fading of the uplink and downlink is not much different, and the uplink and downlink path loss can be used as a reference. Therefore, it is possible to determine whether PUSCH uplink enhancement is needed based on the RSRP performance of the downlink signal.
  • LOS line of sight
  • the uplink data transmission corresponding to the terminal device is enhanced.
  • the first threshold is carried in the second broadcast signal, and the first threshold is a threshold of signal quality corresponding to the first broadcast signal or the second broadcast signal.
  • the first threshold may be specifically carried in a field “rsrp-thresholdMsg5” in the second broadcast signal.
  • the first threshold is not a fixed value and can be adjusted according to different application scenarios, and the embodiments of the present application do not limit this.
  • the second broadcast signal and the first broadcast signal can be the same broadcast signal or different broadcast signals, and can be cell-level information required for the initial access process of terminal equipment such as SSB and SIB1. This application does not impose any restrictions on this.
  • the first threshold is carried in the broadcast signal and is a threshold of the signal quality corresponding to the broadcast signal.
  • the second broadcast signal and the first broadcast signal are both SIB1
  • the first threshold is carried in SIB1 and is a threshold of the signal quality corresponding to SIB1.
  • the energy of the received broadcast signal (SIB1) is measured by comparing the energy of the broadcast signal (SIB1) with the size of the first threshold, and then a determination is made whether to request the corresponding uplink data transmission enhancement of the terminal device, so as to achieve transmission performance enhancement of message 5 (Msg5) and subsequent uplink data in the four-step random access process.
  • the first threshold is carried in the second broadcast signal and is a threshold of the signal quality corresponding to the first broadcast signal or the second broadcast signal.
  • the second broadcast signal is SSB
  • the first broadcast signal is SIB1
  • the first threshold is carried in SSB and is a threshold of the signal quality corresponding to SIB1 or SSB.
  • the energy of SIB1 can be detected through the DMRS reference signal, and the energy of the received first broadcast signal (SIB1) can be measured by comparing the energy of the first broadcast signal (SIB1) with the first threshold, thereby determining whether to request the corresponding uplink data transmission enhancement of the terminal device, so as to achieve enhanced transmission performance of message 5 (Msg5) and subsequent uplink data in the four-step random access process.
  • SIB1 the energy of the received first broadcast signal
  • the uplink data corresponding to the terminal device starts uplink transmission enhancement from message 3 or message A and ends uplink transmission enhancement with the RRC reconfiguration message.
  • the second threshold is carried in the third broadcast signal, and the second threshold is the threshold of the signal quality corresponding to message 3 or message A.
  • the second threshold may be specifically carried in a field “rsrp-thresholdMsg3” or “rsrp-thresholdMsgA” in the third broadcast signal.
  • the second threshold is not a fixed value and can be adjusted according to different application scenarios, and the embodiments of the present application do not limit this.
  • this situation 2 is equivalent to binding whether Msg5 performs uplink enhancement with whether Msg3 performs uplink enhancement.
  • Msg3 needs to perform uplink enhancement
  • Msg5 needs to perform uplink enhancement
  • Msg5 does not need to perform uplink enhancement.
  • the third broadcast signal and the first broadcast signal can be the same broadcast signal or different broadcast signals, and can be cell-level information required for the initial access process of terminal equipment such as SSB and SIB1. This application does not impose any restrictions on this.
  • the second threshold is carried in the broadcast signal and is a threshold of the signal quality corresponding to message 3 or message A.
  • the third broadcast signal and the first broadcast signal are both SIB1
  • the second threshold is carried in SIB1 and is the threshold of the signal quality corresponding to message 3 or message A.
  • the energy of the received broadcast signal (SIB1) is measured by comparing the energy of the broadcast signal (SIB1) with the size of the second threshold, and then a determination is made whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • SIB1 The energy of the received broadcast signal (SIB1) is measured by comparing the energy of the broadcast signal (SIB1) with the size of the second threshold, and then a determination is made whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • Msg3 message 3
  • MsgA message A
  • the second threshold is carried in the third broadcast signal and is a threshold of the signal quality corresponding to message 3 or message A.
  • the third broadcast signal is SSB
  • the first broadcast signal is SIB1
  • the second threshold is carried in the SSB and is the threshold of the signal quality corresponding to the SSB.
  • the energy of the received first broadcast signal (SIB1) is measured by comparing the energy of the first broadcast signal (SIB1) with the size of the second threshold, and then a determination is made whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • SIB1 The energy of the received first broadcast signal
  • SIB1 The energy of the received first broadcast signal (SIB1) is measured by comparing the energy of the first broadcast signal (SIB1) with the size of the second threshold, and then a determination is made whether to request the corresponding uplink data transmission enhancement of the terminal device to achieve transmission performance enhancement of message 3 (Msg3) or message A (MsgA) and subsequent uplink data.
  • Msg3 message 3
  • MsgA message A
  • the need to request the corresponding uplink data transmission enhancement of the terminal device can be determined by measuring the energy size of the first broadcast signal, so that the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the UE and the network device (satellite base station), improving the uplink transmission performance, and enabling the UE to stably complete initial access.
  • Figure 5 is a flow chart of a communication method provided in an embodiment of the present application. It is understandable that the steps in the embodiment of the present application can be regarded as a reasonable variation or supplement of the embodiment in Figure 4 above; or, it is understandable that the communication method in the embodiment of the present application can also be regarded as an embodiment that can be executed independently, and the present application does not limit this.
  • the communication method provided in the embodiment of the present application is applied to the field of communication technology, such as four-step random access in an NTN communication scenario, and the communication method includes but is not limited to the following steps:
  • the network device sends SIB1 (carried on PDSCH) to the terminal device, and correspondingly, the terminal device receives SIB1 (carried on PDSCH) from the network device.
  • the terminal device sends a Preamble (carried on PRACH) to the network device, and correspondingly, the network device receives the Preamble (carried on PRACH) from the terminal device.
  • the network device sends DCI 0_0 (carried on PDCCH) or RAR with UE Grant (carried on PDCCH/PUSCH) to the terminal device.
  • the terminal device receives DCI 0_0 (carried on PDCCH) or RAR with UE Grant (carried on PDCCH/PUSCH) from the network device.
  • the terminal device determines to carry the uplink transmission enhancement request in Msg3.
  • the terminal device sends Msg3 (carried on PUSCH) to the network device, where Msg3 carries an uplink transmission enhancement request.
  • the network device receives Msg3 (carried on PUSCH) from the terminal device.
  • the network device sends DCI 1_0 (carried on PDCCH) to the terminal device, and correspondingly, the terminal device receives DCI 1_0 (carried on PDCCH) from the network device.
  • the network device sends Msg4 (carried on PDSCH) to the terminal device, enables and configures the uplink transmission enhancement technology (TBoMS), and correspondingly, the terminal device receives Msg4 from the network device.
  • Msg4 carried on PDSCH
  • TBoMS uplink transmission enhancement technology
  • the terminal device determines to use the uplink transmission enhancement technology to send uplink data.
  • the terminal device uses TBoMS to send Msg5 and PUSCH to the network device, and correspondingly, the network device receives Msg5 and PUSCH from the terminal device.
  • the embodiment of the present application realizes uplink data transmission enhancement of Msg5 and subsequent uplink signaling in the four-step random access process by the UE requesting uplink data transmission enhancement in the initial access process in the RRC establishment request (Msg3 in the four-step random access process).
  • the UE makes an uplink data transmission enhancement request through the field "ul-EnhancementRequest", a bit in this field of 1 indicates a request for uplink data transmission enhancement, and a bit in this field of 0 indicates no request for uplink data transmission enhancement.
  • the network side receives the RRC establishment request (Msg3 in the four-step random access process), and determines whether to configure Msg5 (RRCSetupComplete, RRC establishment completed) in Msg4 (RRCSetup) and use TBoMS for subsequent uplink PUSCH according to the field "ul-EnhancementRequest”.
  • the UE receives the SIB1 system information sent by the network side and obtains the cell information.
  • the UE initiates random access on the corresponding access opportunity RO resource according to the SIB1 configuration and sends PRACH.
  • the network side receives the PRACH on the UE side, responds, and sends a random access response RAR.
  • the UE side determines whether uplink enhancement of Msg5 and subsequent uplink PUSCH transmission is required. If a request is required, the ul-EnhancementReq field in Msg3 is set to 1 to indicate a request for subsequent PUSCH uplink data transmission enhancement. If a request is not required, the ul-EnhancementReq field is set to 0 to indicate that subsequent PUSCH uplink data transmission enhancement is not requested.
  • the network receives Msg3 sent by the UE and interprets the fields therein to determine whether the UE requests uplink data transmission enhancement. It also determines whether to configure TBoMS technology in Msg4 based on the requirements. If necessary, the number of slots occupied by TBoMS (number Of Slots-TBoMS-r17) and the number of repetitions (number Of Repetitions) are configured in Msg4.
  • the UE side sends uplink messages according to the configuration in Msg4.
  • the ul-EnhancementReq-r17 information element may be added to Msg3.
  • this information element is originally a spare bit.
  • the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the UE and the network device (satellite base station), improving the uplink transmission performance, and enabling the UE to stably complete initial access.
  • Figure 6 is a flow chart of a communication method provided in an embodiment of the present application. It is understandable that the steps in the embodiment of the present application can be regarded as a reasonable variation or supplement of the embodiment in Figure 4 above; or, it is understandable that the communication method in the embodiment of the present application can also be regarded as an embodiment that can be executed independently, and the present application does not limit this.
  • the communication method provided in the embodiment of the present application is applied to the field of communication technology, such as two-step random access in NTN communication scenarios, and the communication method includes but is not limited to the following steps:
  • the network device sends SIB1 (PDSCH) to the terminal device, and correspondingly, the terminal device receives SIB1 (PDSCH) from the network device.
  • SIB1 PDSCH
  • the terminal device determines to carry the uplink transmission enhancement request in MsgA.
  • the terminal device sends a Preamble (PRACH) to the network device, and correspondingly, the network device receives the Preamble (PRACH) from the terminal device.
  • PRACH Preamble
  • PRACH Preamble
  • the terminal device sends a MsgA (PRACH, PUSCH) to the network device, where the MsgA carries an uplink transmission enhancement request.
  • the network device receives the MsgA (PRACH, PUSCH) from the terminal device.
  • the uplink transmission enhancement request carried in MsgA includes Preamble (PRACH) and/or MsgA (PRACH, PUSCH).
  • the network device sends a contention resolution (PDCCH/PDSCH) to the terminal device, enables and configures the uplink transmission enhancement technology (TBoMS), and correspondingly, the terminal device receives the contention resolution from the network device.
  • a contention resolution PCCH/PDSCH
  • TBoMS uplink transmission enhancement technology
  • the network device sends DCI 0_0/0_1/0_2 to the terminal device, and correspondingly, the terminal device receives DCI 0_0/0_1/0_2 from the network device.
  • the terminal device determines to use the uplink transmission enhancement technology to send uplink data.
  • the terminal device uses TBoMS to send PUSCH to the network device, and correspondingly, the network device receives PUSCH from the terminal device.
  • the UE requests uplink data transmission enhancement in the initial access process in the RRC establishment request (MsgA in the two-step random access process), thereby achieving uplink data transmission enhancement for subsequent uplink signaling.
  • two-step random access is taken as an example, and the network side sends system information such as SIB1.
  • the UE receives system information such as SIB1 sent by the network side and obtains cell information.
  • the UE initiates random access on the corresponding access opportunity RO resource according to the SIB1 configuration and sends PRACH.
  • the UE determines whether it is necessary to perform uplink data transmission enhancement during the initial access process, and carries a request indication in MsgA-PUSCH. Optionally, if a request is required, it is set to 1 to request subsequent PUSCH uplink data transmission enhancement, and if no request is required, it is set to 0 to indicate that subsequent PUSCH uplink data transmission enhancement is not requested.
  • the network side receives MsgA sent by the UE side and interprets the fields therein to determine whether the UE side requests uplink data transmission enhancement. And determine whether to enable the configuration of TBoMS according to the requirements. If configuration is required, the configuration information of TBoMS is carried through the downlink PDSCH. The UE side determines whether to perform uplink data transmission enhancement according to the configuration information and DCI indication. If enhancement is required, PUSCH is sent according to the number of repeated transmissions of PUSCH and the number of occupied time slots.
  • the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the UE and the network device (satellite base station), improving the uplink transmission performance, and enabling the UE to stably complete initial access.
  • the present application also provides a method for a terminal device to accurately determine whether it is necessary to request uplink data transmission enhancement. It can be understood that the steps in the embodiments of the present application can be regarded as reasonable variations or supplements to the embodiments in Figures 4, 5, or 6 above; or, it can be understood that the methods in the embodiments of the present application can also be regarded as embodiments that can be executed independently, and the present application does not limit this.
  • the method provided in the embodiments of the present application is applied to the field of communication technology, such as random access in NTN communication scenarios, and the method includes but is not limited to the following steps:
  • the network device sends a first broadcast signal, and correspondingly, the terminal device receives the first broadcast signal from the network device.
  • the terminal device determines the uplink data transmission enhancement corresponding to the terminal device according to the energy of the first broadcast signal.
  • the first broadcast signal may be cell-level information required for the initial access process of the terminal device, such as a synchronization signal block (SSB), a system information block 1 (SIB1), etc.
  • the energy of the first broadcast signal may be signal quality, and the signal energy may include but is not limited to reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), received signal strength indicator (RSSI), signal to interference plus noise ratio (SINR), and signal noise ratio (SNR).
  • RSRP reference signal receiving power
  • RSRQ reference signal receiving quality
  • RSSI received signal strength indicator
  • SINR signal to interference plus noise ratio
  • the uplink data transmission corresponding to the terminal device is enhanced.
  • the uplink data corresponding to the terminal device is transmitted and enhanced starting from message 3 (Msg3) or message A (MsgA).
  • the first threshold is carried in the second broadcast signal, and the first threshold is a threshold of signal quality corresponding to the first broadcast signal or the second broadcast signal.
  • the first threshold may be specifically carried in a field “rsrp-thresholdMsg5” in the second broadcast signal, such as in BWP-UplinkCommon.
  • the first threshold is not a fixed value and can be adjusted according to different application scenarios, and the embodiments of the present application do not limit this.
  • the second threshold is carried in the third broadcast signal, and is a threshold of the signal quality corresponding to the first broadcast signal or the second broadcast signal, and is used to characterize a threshold at which message 3 or message A needs to be enhanced.
  • the second threshold may be specifically carried in a field “rsrp-thresholdMsg3” or “rsrp-thresholdMsgA” in a third broadcast signal, such as in BWP-UplinkCommon.
  • the second threshold is not a fixed value and can be adjusted according to different application scenarios, and the embodiments of the present application do not limit this.
  • this embodiment is equivalent to binding whether Msg5 performs uplink enhancement with whether Msg3 performs uplink enhancement.
  • Msg3 needs to perform uplink enhancement
  • Msg5 needs to perform uplink enhancement
  • Msg5 does not need to perform uplink enhancement.
  • the uplink data corresponding to the terminal device starts uplink transmission enhancement from message 3 or message A and ends uplink transmission enhancement with the RRC reconfiguration message.
  • the difference between uplink and downlink in frequency division duplexing (FDD) scenarios is mainly due to small-scale fading of the channel. Since the NTN channel is biased towards the line of sight (LOS) path, the transmission distance, angle and many other statistical characteristics between the uplink and downlink are basically the same. It can be considered that the large-scale fading of the uplink and downlink is not much different, and the uplink and downlink path loss can be used as a reference. Therefore, it is possible to determine whether PUSCH uplink enhancement is needed based on the RSRP performance of the downlink signal.
  • LOS line of sight
  • the thresholds (such as the first threshold and the second threshold) in the embodiments of the present application can be adjusted according to different application scenarios. For example, they can be configured through the "RSRP-Range" field.
  • the distance between the base station and the UE is short, the energy received by the UE is strong, and the RSRP threshold can be configured higher; in a satellite scenario, the distance between the base station and the UE is far, the signal energy received by the UE is weak, and the RSRP threshold can be configured lower.
  • RSRP thresholds required for different channel enhancements can also be configured.
  • uplink message 1 needs to carry 100 bits and uplink message 2 needs to carry 1 bit. Since the uplink transmission enhancement requirements of these two types of messages are different, the RSRP thresholds used to determine whether uplink transmission enhancement is required can be different. For example, in the scenario of transmitting uplink message 1 and uplink message 2, the RSRP threshold of uplink message 1 can be smaller than the RSRP threshold of uplink message 2.
  • the need to request the corresponding uplink data transmission enhancement of the terminal device can be determined by measuring the energy size of the first broadcast signal, so that the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the UE and the network device (satellite base station), improving the uplink transmission performance, and enabling the UE to stably complete initial access.
  • the present application also provides a method for resolving the conflict between the uplink data transmission timing and the access timing of the terminal device. It can be understood that the steps in the embodiments of the present application can be regarded as a reasonable variation or supplement of the embodiments in Figures 4, 5 or 6 above; or, it can be understood that the method in the embodiments of the present application can also be regarded as an embodiment that can be executed independently, and the present application does not limit this.
  • the method provided in the embodiments of the present application is applied to the field of communication technology, such as random access in NTN communication scenarios, and the method is not limited to the following steps:
  • the network device sends the third information to the terminal device, and correspondingly, the terminal device receives the third information from the network device.
  • the third information is used to indicate that in the case of time division multiplexing transmission, the time slot occupied by the uplink data transmission corresponding to the terminal device is different from the time slot occupied by the message 1 transmission in the four-step random access process corresponding to the terminal device, or the time slot occupied by the uplink data transmission corresponding to the terminal device is different from the time slot occupied by the message A transmission in the two-step random access process corresponding to the terminal device.
  • the third information avoids the conflict between the uplink data transmission timing and the access timing by indicating that in the case of time division multiplexing transmission, the time slot occupied by the uplink data transmission is different from the time slot occupied by the message 1 (Msg1) transmission in the four-step random access process.
  • the third information avoids the conflict between the uplink data transmission timing and the access timing by indicating that in the case of time division multiplexing transmission, the time slot occupied by the uplink data transmission is different from the time slot occupied by the message A (MsgA) transmission in the two-step random access process.
  • the third information is also used to indicate that in the case of frequency division multiplexing transmission, the time slots occupied by the uplink data transmission corresponding to the terminal device are continuous uplink time slots.
  • the time slot occupied by uplink data transmission corresponding to the terminal device can be a continuous uplink time slot, and the time slot occupied by uplink data transmission can be different from or the same as the time slot occupied by the access timing, which can be determined according to the needs of the network device.
  • the problem addressed by the embodiments of the present application is that the continuous uplink resources occupied by the uplink heavy load PUSCH through the TBoMS technology conflict with the access opportunity RO resources, affecting the initial access process. If the PUSCH and RO resources conflict, when the resources on the network side are limited, the PUSCH and the PRACH on the RO cannot be received at the same time, resulting in the UE's PUSCH transmission or PRACH being affected, thereby affecting the performance during the initial access process.
  • the field “AvailableSlotCounting” is configured to make PUSCH transmission avoid the time slot where the RO is located.
  • the timeslots for PUSCH transmission need to avoid the timeslots where RO is located.
  • the timeslots for PUSCH transmission are continuous uplink timeslots.
  • the N*K time slots of the TBoMS may include non-contiguous uplink time slots, where N is the number of time slots required for one TBoMS transmission, and K is the number of repetitions of the TBoMS transmission.
  • FIG. 7 is a schematic diagram of a method for resolving timing conflicts provided in an embodiment of the present application.
  • the network side when PUSCH transmission is enabled to avoid RO, the network side only receives PRACH from the UE side on the RO resources. Then, the TBoMS PUSCH from the UE is received on the remaining uplink time slots avoiding RO resources.
  • the time slots in Figure 7 are based on a sub-carrier spacing (SCS) of 30kHz, and each system frame has 20 time slots.
  • the RO resources in every 20ms occupy a total of 16 time slots, so the remaining time slots in every 20ms are 24 time slots.
  • the remaining time slots need to occupy the second group of free time slot resources. For example, if the 24 time slots of SFN#2-3 in Figure 7 are not enough, the remaining uplink time slots after avoiding the RO resources in SFN#4-5 will continue to be occupied.
  • the UE When the network side configures the UE to avoid uplink RO (AvailableSlotCounting is configured as enabled), the UE transmits PUSCH in the uplink time slot avoiding RO. The network side receives the PUSCH of the UE side in the corresponding uplink time slot.
  • the UE When the network side does not configure the UE to avoid uplink RO (when AvailableSlotCounting is not configured), the UE does not need to avoid the uplink timeslot where the RO is located, and can send PUSCH in the timeslot where the RO resource is located. The network side also receives the PUSCH of the UE side in the corresponding uplink timeslot.
  • the network side can determine whether to configure AvailableSlotCounting based on demand. Specifically, when uplink data and Preamble are transmitted in time division multiplexing, the network side determines to configure AvailableSlotCounting, and when uplink data and Preamble are transmitted in frequency division multiplexing, the network side determines that AvailableSlotCounting may not be configured.
  • the purpose of configuring AvailableSlotCounting is to make uplink data (PUSCH) transmission avoid the time slot where Preamble (RO) is located.
  • the time slot occupied by the uplink data transmission avoids the time slot occupied by the access opportunity, thereby avoiding the conflict between the transmission resources of the uplink data and the access resources of the access opportunity, thereby improving the uplink transmission performance and enabling the UE to stably complete the initial access.
  • FIG. 8 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • the communication device 80 may include a communication unit 801 and a processing unit 802.
  • the communication unit 801 and the processing unit 802 may be software, hardware, or a combination of software and hardware.
  • the communication unit 801 can implement a sending function and/or a receiving function, and the communication unit 801 can also be described as a transceiver unit.
  • the communication unit 801 can also be a unit integrating an acquisition unit and a sending unit, wherein the acquisition unit is used to implement a receiving function and the sending unit is used to implement a sending function.
  • the communication unit 801 can be used to receive information sent by other devices, and can also be used to send information to other devices.
  • the communication device 80 may correspond to the terminal device in the method embodiments shown in Figures 4, 5, and 6 above, such as the communication device 80 may be a terminal device or a chip in the terminal device.
  • the communication device 80 may include a unit for executing the operations performed by the terminal device in the method embodiments shown in Figures 4, 5, and 6 above, and each unit in the communication device 80 is for implementing the operations performed by the terminal device in the method embodiments shown in Figures 4, 5, and 6 above.
  • the description of each unit is as follows:
  • the communication unit 801 is used to perform input and output functions such as sending/receiving by the terminal device in the method embodiments shown in FIG. 4 , FIG. 5 , and FIG. 6 ;
  • the processing unit 802 is used to execute processing functions such as generating information, detecting energy, and determining transmission enhancement by the terminal device in the method embodiments shown in Figures 4, 5, and 6 above.
  • the methods executed by the processing unit 802 and the communication unit 801 may refer to the methods corresponding to the above-mentioned Figures 4, 5, and 6, which will not be repeated here.
  • the communication device 80 may correspond to the network device in the method embodiments shown in FIG4 , FIG5 , and FIG6 , such as the communication device 80 may be a network device or a chip in the network device.
  • the communication device 80 may include a unit for executing the operations performed by the network device in the method embodiments shown in FIG4 , FIG5 , and FIG6 , and each unit in the communication device 80 is for implementing the operations performed by the network device in the method embodiments shown in FIG4 , FIG5 , and FIG6 .
  • the description of each unit is as follows:
  • the communication unit 801 is used to perform input and output functions such as sending/receiving by the network device in the method embodiments shown in FIG. 4 , FIG. 5 , and FIG. 6 ;
  • the processing unit 802 is used to execute processing functions such as information generated by the network device in the method embodiments shown in FIG. 4 , FIG. 5 , and FIG. 6 .
  • the methods executed by the processing unit 802 and the communication unit 801 may refer to the methods corresponding to the above-mentioned Figures 4, 5, and 6, which will not be repeated here.
  • the communication device is a communication device.
  • the communication unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the communication device is a chip (system) or circuit used in a communication device.
  • the communication unit may be a communication interface (input/output interface), interface circuit, output circuit, input circuit, pin or related circuit on the chip (system) or circuit;
  • the processing unit may be at least one processor, processing circuit or logic circuit.
  • each unit in the device shown in Figure 8 can be separately or all combined into one or more other units to constitute, or one (some) of the units can also be split into multiple smaller units in function to constitute, which can achieve the same operation without affecting the realization of the technical effects of the embodiments of the present application.
  • the above-mentioned units are divided based on logical functions.
  • the function of a unit can also be implemented by multiple units, or the function of multiple units can be implemented by one unit.
  • other units can also be included based on electronic equipment.
  • these functions can also be implemented with the assistance of other units, and can be implemented by the collaboration of multiple units.
  • each unit may also refer to the corresponding description of the method embodiments shown in the above-mentioned FIG. 4 , FIG. 5 , and FIG. 6 .
  • the network device by carrying the information requesting the enhanced uplink data transmission corresponding to the terminal device in the RRC connection establishment message, the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the terminal device and the network device, improving the uplink transmission performance, and enabling the terminal device to stably complete the initial access.
  • FIG. 9 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • the communication device 90 shown in FIG. 9 is merely an example, and the communication device of the embodiment of the present application may further include other components, or include components with functions similar to those of the components in FIG. 9 , or may not include all the components in FIG. 9 .
  • the communication device 90 includes a communication interface 901 and at least one processor 902 .
  • the communication device 90 may correspond to any node or device in a terminal device or a network device.
  • the communication interface 901 is used to send and receive signals, and at least one processor 902 executes program instructions so that the communication device 90 implements the corresponding process of the method executed by the corresponding device in the above method embodiment.
  • the communication device 90 may correspond to the terminal device in the method embodiments shown in FIG. 4, FIG. 5, and FIG. 6, for example, the communication device 90 may be a terminal device or a chip in the terminal device.
  • the communication device 90 may include components for executing the operations performed by the terminal device in the above method embodiments, and the components in the communication device 90 are respectively for implementing the operations performed by the terminal device in the above method embodiments. Specifically, it may be as follows:
  • the communication interface 901 is used to perform input and output functions such as sending/receiving by the terminal device in the method embodiments shown in FIG. 4 , FIG. 5 , and FIG. 6 ;
  • Processor 902 is used to execute processing functions such as generating information, detecting energy, and determining transmission enhancement by the terminal device in the method embodiments shown in Figures 4, 5, and 6 above.
  • the communication device 90 may correspond to the network device in the method embodiments shown in FIG. 4, FIG. 5, and FIG. 6, for example, the communication device 90 may be a network device or a chip in the network device.
  • the communication device 90 may include components for executing the operations performed by the network device in the method embodiments described above, and the components in the communication device 90 are respectively for implementing the operations performed by the network device in the method embodiments described above. Specifically, it may be as follows:
  • Communication interface 901 used to perform input and output functions such as sending/receiving by the network device in the method embodiments shown in FIG. 4, FIG. 5, and FIG. 6;
  • the processor 902 is used to execute processing functions such as information generated by the network device in the method embodiments shown in FIG. 4 , FIG. 5 , and FIG. 6 .
  • the network device by carrying the information requesting the enhanced uplink data transmission corresponding to the terminal device in the RRC connection establishment message, the network device can determine that the uplink transmission performance of the terminal device needs to be enhanced, thereby overcoming the signal path loss of the communication signal between the terminal device and the network device, improving the uplink transmission performance, and enabling the terminal device to stably complete the initial access.
  • the communication device may be a chip or a chip system
  • the chip 100 includes a processor 1001 and an interface 1002.
  • the number of the processors 1001 may be one or more, and the number of the interfaces 1002 may be multiple. It should be noted that the functions corresponding to the processors 1001 and the interfaces 1002 may be implemented by hardware design, software design, or a combination of hardware and software, which is not limited here.
  • the chip 100 may further include a memory 1003, and the memory 1003 is used to store necessary program instructions and data.
  • the processor 1001 may be used to call the implementation program of the communication method provided by one or more embodiments of the present application in one or more devices or nodes in the terminal device, network device from the memory 1003, and execute the instructions contained in the program.
  • the interface 1002 may be used to output the execution result of the processor 1001.
  • the interface 1002 may be specifically used to output various messages or information of the processor 1001.
  • the processor in the embodiment of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.
  • the memory in the embodiment of the present application is used to provide a storage space, in which data such as an operating system and a computer program can be stored.
  • the memory includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a portable read-only memory (CD-ROM).
  • the embodiment of the present application also provides a computer-readable storage medium, in which a computer program is stored.
  • a computer program runs on one or more processors, the method shown in Figures 4, 5, and 6 can be implemented.
  • the embodiment of the present application also provides a computer program product, and the above-mentioned computer program product includes a computer program.
  • the above-mentioned computer program runs on a processor, it can implement the method shown in Figures 4, 5, and 6 above.
  • An embodiment of the present application also provides a system, which includes at least one communication device 80 or communication device 90 or chip 100 as described above, and is used to execute the steps executed by the corresponding device in any of the embodiments of Figures 4, 5, and 6.
  • An embodiment of the present application also provides a system, which includes a terminal device and a network device, wherein the terminal device is used to execute the steps executed by the terminal device in any of the embodiments of Figures 4, 5, and 6 above, and the network device is used to execute the steps executed by the network device in any of the embodiments of Figures 4, 5, and 6 above.
  • An embodiment of the present application also provides a processing device, including a processor and an interface; the processor is used to execute the method in any of the above method embodiments.
  • the processing device can be a chip.
  • the processing device can be a field programmable gate array (FPGA), a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, a system on chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), a microcontroller unit (MCU), a programmable logic device (PLD) or other integrated chips.
  • SoC system on chip
  • CPU central processor unit
  • NP network processor
  • DSP digital signal processing circuit
  • MCU microcontroller unit
  • PLD programmable logic device
  • the general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.
  • the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc.
  • the storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories.
  • the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory can be a random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static RAM
  • DRAM dynamic RAM
  • SDRAM synchronous DRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced SDRAM
  • SLDRAM synchlink DRAM
  • DR RAM direct rambus RAM
  • the computer program product includes one or more computer instructions.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated.
  • the available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (DVD)), or a semiconductor medium (e.g., a solid state disc (SSD)), etc.
  • a magnetic medium e.g., a floppy disk, a hard disk, a magnetic tape
  • an optical medium e.g., a high-density digital video disc (DVD)
  • DVD high-density digital video disc
  • SSD solid state disc

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Abstract

一种通信方法及相关装置，涉及通信技术领域。该方法包括：终端设备向网络设备发送第一信息，并接收来自网络设备的第二信息。相应的，网络设备接收来自终端设备的第一信息，并向终端设备发送第二信息。其中，第一信息用于请求终端设备对应的上行数据传输增强，且第一信息承载于终端设备的无线资源控制RRC连接建立消息中；第二信息用于指示终端设备对应的上行数据传输增强。本方法通过在RRC连接建立消息中携带请求终端设备对应的上行数据传输增强的信息，使得网络设备可以判断终端设备的上行传输性能需要增强，从而实现克服终端设备与网络设备之间通信信号的信号路径损耗，提高上行传输性能，使终端设备稳定地完成初始接入。

Description

通信方法及相关装置
本申请要求于2023年06月13日提交中国国家知识产权局、申请号为202310703532.0、申请名称为“通信方法及相关装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法及相关装置。
背景技术
随着信息技术发展，现代通信系统对通信的高效、机动、多样性等提出更迫切的要求。目前，在一些重要应用场景，如空间通信、航空通信、海事通信、军事通信等领域，以卫星、无人机、高空平台等非地面设备为代表的非陆地网络(non terrestrial networks，NTN)通信发挥着无可替代的作用，以实现为海洋、森林等一些区域提供通信服务。
以卫星通信为例，在终端设备(user equipment，UE)初始接入阶段，卫星作为基站，向UE配置随机接入资源，以实现UE的随机接入。但是，卫星相对地面移动速度较大且信号传播距离更远，使得卫星作为基站的信号路径损耗更大，上行和下行传输性能受限，导致UE初始接入性能较低。
因此，为了实现卫星作为基站为UE提供通信服务，UE与卫星基站之间的通信信号如何克服信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入，成为亟待解决的技术问题。
发明内容
本申请实施例提供了一种通信方法及相关装置，可以克服UE与卫星基站之间通信信号的信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入。
第一方面，本申请实施例提供了一种通信方法，该方法可以由通信装置执行。该通信装置可以是整体销售的设备，也可以是用于设备的芯片(系统)或电路，本申请对此不作限定。该方法包括：
向网络设备发送第一信息，所述第一信息用于请求终端设备对应的上行数据传输增强，所述第一信息承载于所述终端设备的无线资源控制RRC连接建立消息中；
接收来自所述网络设备的第二信息，所述第二信息用于指示所述终端设备对应的上行数据传输增强。
本申请实施例中，提供了一种通信方法，终端设备向网络设备发送第一信息，并接收来自网络设备的第二信息，此处的终端设备也可以是可用于执行计算机执行指令的处理器/芯片，本申请实施例对此不作限制。
本申请实施例中的第一信息用于请求终端设备对应的上行数据传输增强，具体请求如何进行上行数据传输增强，本申请实施例对此不作限制。比如，可以是请求通过多时隙传输块(transport block over multi-slot，TBoMS)技术使终端设备对应的上行数据的一个传输块(transport block，TB)在多个时隙上传输并且支持重复传输，也可以是请求终端设备对应的上行数据的一个TB在多个时隙上重复发送，还可以是请求通过传输块缩放因子(TB scaling)缩放信息比特数据量(Ninfo)，并通过编码后的速率匹配等效于进一步降低码率来增强上行数据传输性能。并且，本申请实施例中的第一信息承载于终端设备的无线资源控制(radio resource control，RRC)连接建立消息中，使得终端设备在RRC连接初始接入过程中就可以上报自身能力，从而网络设备也可以获知终端设备支持的能力，判断终端设备的上行传输性能是否需要增强，使终端设备稳定地完成初始接入。而目前终端设备在RRC连接初始接入过程中尚不具备上报上行传输性能的能力，网络设备也不知道终端设备支持哪些能力，无法判断终端设备的上行传输性能是否需要增强，进而无法保证终端设备稳定地完成初始接入。
本申请实施例中的第二信息用于指示终端设备对应的上行数据传输增强，具体指示如何进行上行数据传输增强，本申请实施例对此不作限制。比如，当第一信息中请求按照某种特定方式进行上行数据传输增强，则第二信息用于指示按照第一信息所请求的方式进行上行数据传输增强。当第一信息只请求进行上行数据传输增强，而未请求按照某种特定方式进行上行数据传输增强时，则第二信息用于指示进行上行数据传输增强的方式可以由网络设备确定。
目前在终端设备的初始接入过程中，终端设备还没有上报自身能力，网络设备也不知道终端设备支持哪些能力，无法判断终端设备的上行传输性能是否需要增强。
而本申请实施例中，通过在RRC连接建立消息中携带请求终端设备对应的上行数据传输增强的信息， 使得终端设备在RRC连接初始接入过程中就可以上报自身上行传输性能的能力，从而网络设备也可以获知终端设备的上行传输性能，判断终端设备的上行传输性能需要增强，从而实现克服UE与网络设备(卫星基站)之间通信信号的信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入。
可以理解的是，用于请求终端设备对应的上行数据传输增强的第一信息，在终端设备RRC连接初始接入过程中上报给网络设备即可，使得网络设备可以在RRC连接初始接入过程中及早的获知终端设备的上行传输性能，进而判断终端设备的上行传输性能需要增强，使UE稳定地完成初始接入。具体的，第一信息可以通过RRC连接初始接入过程中的RRC连接建立消息上报给网络设备，第一信息还可以通过RRC连接初始接入过程中的其他消息上报给网络设备，本申请实施例对此不作限制。
结合上述第一方面，在一种可能的实施方式中，在所述终端设备的四步随机接入过程中，所述RRC连接建立消息承载于消息3中，所述第二信息承载于消息4中。
在本申请实施方式中，提供了一种第一信息和第二信息承载位置的可能的具体实施方式，具体为，RRC连接建立消息承载于四步随机接入过程中的消息3(Msg3)中，第二信息承载于四步随机接入过程中的消息4(Msg4)中。通过本申请实施例，在终端设备的四步随机接入过程中，利用消息3(Msg3)携带第一信息请求上行数据传输增强，使得网络设备可以判断终端设备的上行传输性能需要增强，利用消息4(Msg4)携带第二信息指示上行数据传输增强，可以使得消息5(Msg5)及后续上行数据的传输性能增强，从而克服终端设备与网络设备之间通信信号的信号路径损耗，提高上行传输性能，使终端设备稳定地完成初始接入。
结合上述第一方面，在一种可能的实施方式中，在所述终端设备的二步随机接入过程中，所述RRC连接建立消息承载于消息A中，所述第二信息承载于消息B中。
在本申请实施方式中，提供了一种第一信息和第二信息承载位置的可能的具体实施方式，具体为，RRC连接建立消息承载于二步随机接入过程中的消息A(MsgA)中，第二信息承载于二步随机接入过程中的消息B(MsgB)中。通过本申请实施例，在终端设备的二步随机接入过程中，利用消息A(MsgA)携带第一信息请求上行数据传输增强，使得网络设备可以判断终端设备的上行传输性能需要增强，利用消息B(MsgB)携带第二信息指示上行数据传输增强，可以使得后续上行数据的传输性能增强，从而克服终端设备与网络设备之间通信信号的信号路径损耗，提高上行传输性能，使终端设备稳定地完成初始接入。
结合上述第一方面，在一种可能的实施方式中，所述第一信息包括一个比特，所述一个比特的值为第一值，所述第一值表示请求所述终端设备对应的所述上行数据传输增强。
在本申请实施方式中，提供了一种第一信息的可能的具体实施方式，具体为，该第一信息包括一个比特，通过给该一个比特赋不同的值，可以表示请求或不请求终端设备对应的上行数据传输增强。比如，该一个比特的值为第一值，表示请求终端设备对应的上行数据传输增强。可以理解的是，该一个比特可以是复用RRC连接建立消息中的预留比特，使能其指示请求上行数据传输增强的功能；该一个比特也可以是RRC连接建立消息中新增的比特，本申请实施例对此不做限制。
可选的，该一个比特的值为第二值，表示不请求终端设备对应的上行数据传输增强，该第一值和第二值不同。
可选的，该一个比特的值为空值，表示不请求终端设备对应的上行数据传输增强；或者，上述第一信息包括的一个比特不存在，也可以表示不请求终端设备对应的上行数据传输增强。
结合上述第一方面，在一种可能的实施方式中，所述终端设备的RRC连接建立消息携带在媒体接入控制MAC层数据包中，所述MAC层数据包的包头中包括用于表示所述终端设备对应的上行数据传输增强对应的逻辑信道标识。
在本申请实施方式中，提供了一种表示上行数据传输增强的可能的具体实施方式，具体为，利用RRC连接建立消息进行上行数据传输增强的请求还可以通过媒体接入控制(media access control，MAC)层数据包中的逻辑信道标识(logical channel ID，LCID)表示。可以理解的是，用于承载上行数据传输增强请求的RRC连接建立消息携带在MAC层数据包中，MAC层数据包的包头中包括终端设备对应的上行数据传输增强对应的逻辑信道标识时，该逻辑信道标识用于表示请求终端设备对应的上行数据传输增强。
结合上述第一方面，在一种可能的实施方式中，所述第二信息包括以下至少一项：多时隙传输块TBoMS占用的时隙数，所述TBoMS传输的重复次数；
所述第二信息具体用于指示所述终端设备对应的上行数据通过所述TBoMS传输。
在本申请实施方式中，提供了一种第二信息的可能的具体实施方式，具体为，当第一信息具体用于请求通过TBoMS技术使终端设备对应的上行数据的一个TB在多个时隙上传输并且支持重复传输以增强上行数据传输时，第二信息包括但不限于TBoMS占用的时隙数以及TBoMS传输的重复次数，此时的第二信息具体用于指示终端设备对应的上行数据通过TBoMS传输。
结合上述第一方面，在一种可能的实施方式中，所述方法还包括：
接收来自所述网络设备的第三信息，所述第三信息用于指示在时分复用传输的情况下，所述终端设备对应的上行数据传输占用的时隙与所述终端设备对应的四步随机接入过程中的消息1传输占用的时隙不同，或者，所述终端设备对应的上行数据传输占用的时隙与所述终端设备对应的二步随机接入过程中的消息A传输占用的时隙不同。
在本申请实施方式中，提供了一种解决上行数据传输时机与接入时机冲突的可能的具体实施方式，具体为，终端设备接收来自网络设备的第三信息，并根据该第三信息可避免上行数据传输时机与接入时机发生冲突。该第三信息通过指示在时分复用传输的情况下，上行数据传输占用的时隙与四步随机接入过程中的消息1(Msg1)传输占用的时隙不同，来避免上行数据传输时机与接入时机发生冲突。或者，该第三信息通过指示在时分复用传输的情况下，上行数据传输占用的时隙与二步随机接入过程中的消息A(MsgA)传输占用的时隙不同，来避免上行数据传输时机与接入时机发生冲突。
目前在终端设备的初始接入过程中，上行数据传输使用的是连续的时隙，在上行链路预算受限，上行通道资源有限的场景下，上行数据的传输资源与接入时机的接入资源可能冲突，导致UE初始接入性能较低。
而本申请实施例中，通过第三信息的指示，使上行数据传输占用的时隙避开接入时机所占用的时隙，避免上行数据的传输资源与接入时机的接入资源发生冲突，从而提高上行传输性能，使UE稳定地完成初始接入。
结合上述第一方面，在一种可能的实施方式中，所述第三信息还用于指示在频分复用传输的情况下，所述终端设备对应的上行数据传输占用的时隙为连续的上行时隙。
在本申请实施方式中，提供了一种第三信息的可能的具体实施方式，具体为，该第三信息还用于指示在频分复用传输的情况下，终端设备对应的上行数据传输占用的时隙为连续的上行时隙。可以理解的是，由于上行数据传输和随机接入消息传输采用的是频分复用传输，因此不存在上行数据传输时机与接入时机发生冲突的问题。该场景下，终端设备对应的上行数据传输占用的时隙可以为连续的上行时隙，且上行数据传输占用的时隙与接入时机占用的时隙可以不同，也可以相同，具体可根据网络设备的需求确定。
结合上述第一方面，在一种可能的实施方式中，所述方法还包括：
接收来自网络设备的第一广播信号；
在所述第一广播信号的能量小于第一阈值的情况下，确定终端设备对应的上行数据传输增强；或者，
在所述第一广播信号的能量小于第二阈值的情况下，确定所述终端设备对应的上行数据从消息3或消息A开始传输增强。
在本申请实施方式中，提供了一种确定上行数据传输增强的可能的具体实施方式，具体为，终端设备接收来自网络设备的第一广播信号，并根据该第一广播信号的能量确定终端设备对应的上行数据传输增强。可以理解的是，该第一广播信号可以是同步信号块(synchronization signal block，SSB)、系统信息块一(system information block 1，SIB1)等终端设备初始接入过程中所必需的小区级信息，该第一广播信号的能量可以是信号质量。其中，在第一广播信号的能量小于第一阈值的情况下，确定终端设备对应的上行数据传输增强。该情况下，通过衡量接收第一广播信号的能量大小来判断是否请求终端设备对应的上行数据传输增强，以实现四步随机接入过程中的消息5(Msg5)及后续上行数据的传输性能增强。或者，在第一广播信号的能量小于第二阈值的情况下，确定终端设备对应的上行数据从消息3(Msg3)或消息A(MsgA)开始传输增强。该情况下，通过衡量接收第一广播信号的能量大小来判断是否请求终端设备对应的上行数据传输增强，以实现消息3(Msg3)或消息A(MsgA)及后续上行数据的传输性能增强。
本申请实施例中，可以通过衡量第一广播信号的能量大小来确定需要请求终端设备对应的上行数据传输增强，使得网络设备可以判断终端设备的上行传输性能需要增强，从而实现克服UE与网络设备(卫星基站)之间通信信号的信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入。
可选的，所述方法还包括：
在所述第一广播信号的能量小于所述第二阈值的情况下，还确定所述终端设备对应的上行数据从消息3或消息A开始上行传输增强，至RRC重配消息结束上行传输增强。
结合上述第一方面，在一种可能的实施方式中，所述第一阈值承载于第二广播信号中，所述第一阈值为所述第一广播信号或者所述第二广播信号对应的信号质量的阈值，所述信号质量包括以下任一项或多项：
参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR、信噪比SNR。
在本申请实施方式中，提供了一种第一阈值的可能的具体实施方式，具体为，该第一阈值承载于第二广播信号中，且该第一阈值为第一广播信号或者第二广播信号对应的信号质量的阈值。可以理解的是，该第一广播信号和第二广播信号可以是相同的广播信号，也可以是不同的广播信号，本申请对此不作限制。该广播信号对应的信号质量可以包括但不限于参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、接收信号强度指示(received signal strength indicator，RSSI)、信号与干扰加噪声比(signal to interference plus noise ratio，SINR)、信噪比(signal noise ratio，SNR)。其中，当第一广播信号和第二广播信号为相同的某个广播信号时，该第一阈值承载于该广播信号中且为该广播信号对应的信号质量的阈值，通过该广播信号的能量和第一阈值的大小比较来衡量接收该广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息5(Msg5)及后续上行数据的传输性能增强。当第一广播信号和第二广播信号为不同的广播信号时，该第一阈值承载于第二广播信号中且为第一广播信号或者第二广播信号对应的信号质量的阈值，通过第一广播信号的能量和第一阈值的大小比较来衡量接收第一广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息5(Msg5)及后续上行数据的传输性能增强。
结合上述第一方面，在一种可能的实施方式中，所述第二阈值承载于第三广播信号中，所述第二阈值为所述消息3或所述消息A对应的信号质量的阈值，所述信号质量包括以下任一项或多项：
参考信号接收功率RSRP的阈值、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR、信噪比SNR。
在本申请实施方式中，提供了一种第二阈值的可能的具体实施方式，具体为，该第二阈值承载于第三广播信号中，且该第二阈值为消息3或消息A对应的信号质量的阈值。可以理解的是，该第一广播信号和第三广播信号可以是相同的广播信号，也可以是不同的广播信号，本申请对此不作限制。该广播信号对应的信号质量可以包括但不限于参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、接收信号强度指示(received signal strength indicator，RSSI)、信号与干扰加噪声比(signal to interference plus noise ratio，SINR)、信噪比(signal noise ratio，SNR)。其中，当第一广播信号和第三广播信号为相同的某个广播信号时，该第二阈值承载于该广播信号中且为消息3或消息A对应的信号质量的阈值，通过该广播信号的能量和第二阈值的大小比较来衡量接收该广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息3(Msg3)或消息A(MsgA)及后续上行数据的传输性能增强。当第一广播信号和第三广播信号为不同的广播信号时，该第二阈值承载于第三广播信号中且为消息3或消息A对应的信号质量的阈值，通过第一广播信号的能量和第二阈值的大小比较来衡量接收第一广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息3(Msg3)或消息A(MsgA)及后续上行数据的传输性能增强。
第二方面，本申请实施例提供了一种通信方法，该方法可以由通信装置执行。该通信装置可以是整体销售的设备，也可以是用于设备的芯片(系统)或电路，本申请对此不作限定。该方法包括：
接收来自网络设备的第一广播信号；
在所述第一广播信号的能量小于第一阈值的情况下，确定终端设备对应的上行数据传输增强；或者，
在所述第一广播信号的能量小于第二阈值的情况下，确定所述终端设备对应的上行数据从消息3或消息A开始传输增强。
本申请实施例中，提供了一种通信方法，终端设备接收来自网络设备的第一广播信号，并基于该第一广播信号的能量确定终端设备对应的上行数据传输增强，此处的终端设备也可以是可用于执行计算机执行指令的处理器/芯片，本申请实施例对此不作限制。
本申请实施例中的第一广播信号可以是同步信号块(synchronization signal block，SSB)、系统信息块一(system information block 1，SIB1)等终端设备初始接入过程中所必需的小区级信息，该第一广播信号的能量可以是信号质量。其中，在第一广播信号的能量小于第一阈值的情况下，确定终端设备对应的上行数据传输增强。可以理解的是，该情况下，通过衡量接收第一广播信号的能量大小来判断是否请求终端设备对应的上行数据传输增强，以实现消息5(Msg5)及后续上行数据的传输性能增强。或者，在第一广播信号的能量小于第二阈值的情况下，确定终端设备对应的上行数据从消息3(Msg3)或消息A(MsgA) 开始传输增强。可以理解的是，该情况下，通过衡量接收第一广播信号的能量大小来判断是否请求终端设备对应的上行数据传输增强，以实现消息3(Msg3)或消息A(MsgA)及后续上行数据的传输性能增强。
本申请实施例中，可以通过衡量第一广播信号的能量大小来确定需要请求终端设备对应的上行数据传输增强，使得网络设备可以判断终端设备的上行传输性能需要增强，从而实现克服UE与网络设备(卫星基站)之间通信信号的信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入。
可选的，所述方法还包括：
在所述第一广播信号的能量小于所述第二阈值的情况下，还确定所述终端设备对应的上行数据从消息3或消息A开始上行传输增强，至RRC重配消息结束上行传输增强。
结合上述第二方面，在一种可能的实施方式中，所述第一阈值承载于第二广播信号中，所述第一阈值为所述第一广播信号或者所述第二广播信号对应的信号质量的阈值，所述信号质量包括以下任一项或多项：
参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR、信噪比SNR。
在本申请实施方式中，提供了一种第一阈值的可能的具体实施方式，具体为，该第一阈值承载于第二广播信号中，且该第一阈值为第一广播信号或者第二广播信号对应的信号质量的阈值。可以理解的是，该第一广播信号和第二广播信号可以是相同的广播信号，也可以是不同的广播信号，本申请对此不作限制。该广播信号对应的信号质量可以包括但不限于参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、接收信号强度指示(received signal strength indicator，RSSI)、信号与干扰加噪声比(signal to interference plus noise ratio，SINR)、信噪比(signal noise ratio，SNR)。其中，当第一广播信号和第二广播信号为相同的某个广播信号时，该第一阈值承载于该广播信号中且为该广播信号对应的信号质量的阈值，通过该广播信号的能量和第一阈值的大小比较来衡量接收该广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息5(Msg5)及后续上行数据的传输性能增强。当第一广播信号和第二广播信号为不同的广播信号时，该第一阈值承载于第二广播信号中且为第一广播信号或者第二广播信号对应的信号质量的阈值，通过第一广播信号的能量和第一阈值的大小比较来衡量接收第一广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息5(Msg5)及后续上行数据的传输性能增强。
结合上述第二方面，在一种可能的实施方式中，所述第二阈值承载于第三广播信号中，所述第二阈值为所述消息3或所述消息A对应的信号质量的阈值，所述信号质量包括以下任一项或多项：
参考信号接收功率RSRP的阈值、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR、信噪比SNR。
在本申请实施方式中，提供了一种第二阈值的可能的具体实施方式，具体为，该第二阈值承载于第三广播信号中，且该第二阈值为消息3或消息A对应的信号质量的阈值。可以理解的是，该第一广播信号和第三广播信号可以是相同的广播信号，也可以是不同的广播信号，本申请对此不作限制。该广播信号对应的信号质量可以包括但不限于参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、接收信号强度指示(received signal strength indicator，RSSI)、信号与干扰加噪声比(signal to interference plus noise ratio，SINR)、信噪比(signal noise ratio，SNR)。其中，当第一广播信号和第三广播信号为相同的某个广播信号时，该第二阈值承载于该广播信号中且为消息3或消息A对应的信号质量的阈值，通过该广播信号的能量和第二阈值的大小比较来衡量接收该广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息3(Msg3)或消息A(MsgA)及后续上行数据的传输性能增强。当第一广播信号和第三广播信号为不同的广播信号时，该第二阈值承载于第三广播信号中且为消息3或消息A对应的信号质量的阈值，通过第一广播信号的能量和第二阈值的大小比较来衡量接收第一广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息3(Msg3)或消息A(MsgA)及后续上行数据的传输性能增强。
第三方面，本申请实施例提供了一种通信方法，该方法可以由通信装置执行。该通信装置可以是整体销售的设备，也可以是用于设备的芯片(系统)或电路，本申请对此不作限定。该方法包括：
接收来自终端设备的第一信息，所述第一信息用于请求所述终端设备对应的上行数据传输增强，所述第一信息承载于所述终端设备的无线资源控制RRC连接建立请求消息中；
向所述终端设备发送第二信息，所述第二信息用于指示所述终端设备对应的上行数据传输增强。
本申请实施例中，提供了一种通信方法，网络设备接收来自终端设备的第一信息，并向终端设备发送第二信息，此处的网络设备也可以是可用于执行计算机执行指令的处理器/芯片，本申请实施例对此不作限制。
本申请实施例中的第一信息用于请求终端设备对应的上行数据传输增强，具体请求如何进行上行数据传输增强，本申请实施例对此不作限制。比如，可以是请求通过多时隙传输块(transport block over multi-slot，TBoMS)技术使终端设备对应的上行数据的一个传输块(transport block，TB)在多个时隙上传输并且支持重复传输，也可以是请求终端设备对应的上行数据的一个TB在多个时隙上重复发送，还可以是请求通过传输块缩放因子(TB scaling)缩放信息比特数据量(Ninfo)，并通过编码后的速率匹配等效于进一步降低码率来增强上行数据传输性能。并且，本申请实施例中的第一信息承载于终端设备的无线资源控制(radio resource control，RRC)连接建立消息中。
本申请实施例中的第二信息用于指示终端设备对应的上行数据传输增强，具体指示如何进行上行数据传输增强，本申请实施例对此不作限制。比如，当第一信息中请求按照某种特定方式进行上行数据传输增强，则第二信息用于指示按照第一信息所请求的方式进行上行数据传输增强。当第一信息只请求进行上行数据传输增强，而未请求按照某种特定方式进行上行数据传输增强时，则第二信息用于指示进行上行数据传输增强的方式可以由网络设备确定。
目前在终端设备的初始接入过程中，终端设备还没有上报自身能力，网络设备也不知道终端设备支持哪些能力，无法判断终端设备的上行传输性能是否需要增强。
而本申请实施例中，通过在RRC连接建立消息中携带请求终端设备对应的上行数据传输增强的信息，使得网络设备可以判断终端设备的上行传输性能需要增强，从而实现克服UE与网络设备(卫星基站)之间通信信号的信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入。
结合上述第三方面，在一种可能的实施方式中，在所述终端设备的四步随机接入过程中，所述RRC连接建立消息承载于消息3中，所述第二信息承载于消息4中。
在本申请实施方式中，提供了一种第一信息和第二信息承载位置的可能的具体实施方式，具体为，RRC连接建立消息承载于四步随机接入过程中的消息3(Msg3)中，第二信息承载于四步随机接入过程中的消息4(Msg4)中。通过本申请实施例，在终端设备的四步随机接入过程中，利用消息3(Msg3)携带第一信息请求上行数据传输增强，使得网络设备可以判断终端设备的上行传输性能需要增强，利用消息4(Msg4)携带第二信息指示上行数据传输增强，可以使得消息5(Msg5)及后续上行数据的传输性能增强，从而克服终端设备与网络设备之间通信信号的信号路径损耗，提高上行传输性能，使终端设备稳定地完成初始接入。
结合上述第三方面，在一种可能的实施方式中，在所述终端设备的二步随机接入过程中，所述RRC连接建立消息承载于消息A中，所述第二信息承载于消息B中。
在本申请实施方式中，提供了一种第一信息和第二信息承载位置的可能的具体实施方式，具体为，RRC连接建立消息承载于二步随机接入过程中的消息A(MsgA)中，第二信息承载于二步随机接入过程中的消息B(MsgB)中。通过本申请实施例，在终端设备的二步随机接入过程中，利用消息A(MsgA)携带第一信息请求上行数据传输增强，使得网络设备可以判断终端设备的上行传输性能需要增强，利用消息B(MsgB)携带第二信息指示上行数据传输增强，可以使得后续上行数据的传输性能增强，从而克服终端设备与网络设备之间通信信号的信号路径损耗，提高上行传输性能，使终端设备稳定地完成初始接入。
结合上述第三方面，在一种可能的实施方式中，所述第一信息包括一个比特，所述一个比特的值为第一值，所述第一值表示请求所述终端设备对应的所述上行数据传输增强。
在本申请实施方式中，提供了一种第一信息的可能的具体实施方式，具体为，该第一信息包括一个比特，通过给该一个比特赋不同的值，可以表示请求或不请求终端设备对应的上行数据传输增强。比如，该一个比特的值为第一值，表示请求终端设备对应的上行数据传输增强。可以理解的是，该一个比特可以是复用RRC连接建立消息中的预留比特，使能其指示请求上行数据传输增强的功能；该一个比特也可以是RRC连接建立消息中新增的比特，本申请实施例对此不做限制。
可选的，该一个比特的值为第二值，表示不请求终端设备对应的上行数据传输增强，该第一值和第二值不同。
结合上述第三方面，在一种可能的实施方式中，所述终端设备的RRC连接建立消息携带在媒体接入控制MAC层数据包中，所述MAC层数据包的包头中包括用于表示所述终端设备对应的上行数据传输增强对应的逻辑信道标识。
在本申请实施方式中，提供了一种表示上行数据传输增强的可能的具体实施方式，具体为，利用RRC连接建立消息进行上行数据传输增强的请求还可以通过媒体接入控制(media access control，MAC)层数据包中的逻辑信道标识(logical channel ID，LCID)表示。可以理解的是，用于承载上行数据传输增强请求的RRC连接建立消息携带在MAC层数据包中，MAC层数据包的包头中包括终端设备对应的上行数据传输增强对应的逻辑信道标识时，该逻辑信道标识用于表示请求终端设备对应的上行数据传输增强。
结合上述第三方面，在一种可能的实施方式中，所述第二信息包括以下至少一项：多时隙传输块TBoMS占用的时隙数，所述TBoMS传输的重复次数；
所述第二信息具体用于指示所述终端设备对应的上行数据通过所述TBoMS传输。
在本申请实施方式中，提供了一种第二信息的可能的具体实施方式，具体为，当第一信息具体用于请求通过TBoMS技术使终端设备对应的上行数据的一个TB在多个时隙上传输并且支持重复传输以增强上行数据传输时，第二信息包括但不限于TBoMS占用的时隙数以及TBoMS传输的重复次数，此时的第二信息具体用于指示终端设备对应的上行数据通过TBoMS传输。
结合上述第三方面，在一种可能的实施方式中，所述方法还包括：
向所述终端设备发送第三信息，所述第三信息用于指示在时分复用传输的情况下，所述终端设备对应的上行数据传输占用的时隙与所述终端设备对应的四步随机接入过程中的消息1传输占用的时隙不同，或者，所述终端设备对应的上行数据传输占用的时隙与所述终端设备对应的二步随机接入过程中的消息A传输占用的时隙不同。
在本申请实施方式中，提供了一种解决上行数据传输时机与接入时机冲突的可能的具体实施方式，具体为，网络设备向终端设备发送第三信息，通过该第三信息避免终端设备的上行数据传输时机与接入时机发生冲突。该第三信息通过指示在时分复用传输的情况下，上行数据传输占用的时隙与四步随机接入过程中的消息1(Msg1)传输占用的时隙不同，来避免上行数据传输时机与接入时机发生冲突。或者，该第三信息通过指示在时分复用传输的情况下，上行数据传输占用的时隙与二步随机接入过程中的消息A(MsgA)传输占用的时隙不同，来避免上行数据传输时机与接入时机发生冲突。
目前在终端设备的初始接入过程中，上行数据传输使用的是连续的时隙，在上行链路预算受限，上行通道资源有限的场景下，上行数据的传输资源与接入时机的接入资源可能冲突，导致UE初始接入性能较低。
而本申请实施例中，通过第三信息的指示，使上行数据传输占用的时隙避开接入时机所占用的时隙，避免上行数据的传输资源与接入时机的接入资源发生冲突，从而提高上行传输性能，使UE稳定地完成初始接入。
结合上述第三方面，在一种可能的实施方式中，所述第三信息还用于指示在FDD频谱下，所述终端设备对应的上行数据传输占用的时隙为连续的上行时隙。其中，FDD频谱使用频分复用传输方式。
在本申请实施方式中，提供了一种第三信息的可能的具体实施方式，具体为，该第三信息还用于指示在频分复用传输的情况下，终端设备对应的上行数据传输占用的时隙为连续的上行时隙。可以理解的是，由于上行数据传输和随机接入消息传输采用的是频分复用传输，因此不存在上行数据传输时机与接入时机发生冲突的问题。该场景下，终端设备对应的上行数据传输占用的时隙可以为连续的上行时隙，且上行数据传输占用的时隙与接入时机占用的时隙可以不同，也可以相同，具体可根据网络设备的需求确定。
结合上述第三方面，在一种可能的实施方式中，所述方法还包括：
发送第一广播信号；
所述第一广播信号用于和第一阈值确定终端设备对应的上行数据传输增强；或者，
所述第一广播信号用于和第二阈值确定所述终端设备对应的上行数据从消息3或消息A开始传输增强。
在本申请实施方式中，提供了一种确定上行数据传输增强的可能的具体实施方式，具体为，网络设备发送第一广播信号，通过该第一广播信号的能量使终端设备确定其对应的上行数据传输增强。可以理解的是，该第一广播信号可以是同步信号块(synchronization signal block，SSB)、系统信息块一(system information block 1，SIB1)等终端设备初始接入过程中所必需的小区级信息，该第一广播信号的能量可以是信号质量。其中，在第一广播信号的能量小于第一阈值的情况下，确定终端设备对应的上行数据传输增强。该情况下，通过衡量接收第一广播信号的能量大小来判断是否请求终端设备对应的上行数据传输增强，以实现消息5(Msg5)及后续上行数据的传输性能增强。或者，在第一广播信号的能量小于第二阈值的情况下，确定终端设备对应的上行数据从消息3(Msg3)或消息A(MsgA)开始传输增强。该情况下，通过衡量接收第一广播信号的能量大小来判断是否请求终端设备对应的上行数据传输增强，以实现消息3 (Msg3)或消息A(MsgA)及后续上行数据的传输性能增强。
本申请实施例中，可以通过衡量第一广播信号的能量大小来确定需要请求终端设备对应的上行数据传输增强，使得网络设备可以判断终端设备的上行传输性能需要增强，从而实现克服UE与网络设备(卫星基站)之间通信信号的信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入。
可选的，所述第一广播信号还用于和所述第二阈值确定所述终端设备对应的上行数据从消息3或消息A开始上行传输增强，至RRC重配消息结束上行传输增强。
结合上述第三方面，在一种可能的实施方式中，所述第一阈值承载于第二广播信号中，所述第一阈值为所述第一广播信号或者所述第二广播信号对应的信号质量的阈值，所述信号质量包括以下任一项或多项：
参考信号接收功率RSRP的阈值、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR、信噪比SNR。
在本申请实施方式中，提供了一种第一阈值的可能的具体实施方式，具体为，该第一阈值承载于第二广播信号中，且该第一阈值为第一广播信号或者第二广播信号对应的信号质量的阈值。可以理解的是，该第一广播信号和第二广播信号可以是相同的广播信号，也可以是不同的广播信号，本申请对此不作限制。该广播信号对应的信号质量可以包括但不限于参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、接收信号强度指示(received signal strength indicator，RSSI)、信号与干扰加噪声比(signal to interference plus noise ratio，SINR)、信噪比(signal noise ratio，SNR)。其中，当第一广播信号和第二广播信号为相同的某个广播信号时，该第一阈值承载于该广播信号中且为该广播信号对应的信号质量的阈值，通过该广播信号的能量和第一阈值的大小比较来衡量接收该广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息5(Msg5)及后续上行数据的传输性能增强。当第一广播信号和第二广播信号为不同的广播信号时，该第一阈值承载于第二广播信号中且为第一广播信号或者第二广播信号对应的信号质量的阈值，通过第一广播信号的能量和第一阈值的大小比较来衡量接收第一广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息5(Msg5)及后续上行数据的传输性能增强。
结合上述第三方面，在一种可能的实施方式中，所述第二阈值承载于第三广播信号中，所述第二阈值为所述消息3或所述消息A对应的信号质量的阈值，所述信号质量包括以下任一项或多项：
参考信号接收功率RSRP的阈值、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR、信噪比SNR。
在本申请实施方式中，提供了一种第二阈值的可能的具体实施方式，具体为，该第二阈值承载于第三广播信号中，且该第二阈值为消息3或消息A对应的信号质量的阈值。可以理解的是，该第一广播信号和第三广播信号可以是相同的广播信号，也可以是不同的广播信号，本申请对此不作限制。该广播信号对应的信号质量可以包括但不限于参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、接收信号强度指示(received signal strength indicator，RSSI)、信号与干扰加噪声比(signal to interference plus noise ratio，SINR)、信噪比(signal noise ratio，SNR)。其中，当第一广播信号和第三广播信号为相同的某个广播信号时，该第二阈值承载于该广播信号中且为消息3或消息A对应的信号质量的阈值，通过该广播信号的能量和第二阈值的大小比较来衡量接收该广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息3(Msg3)或消息A(MsgA)及后续上行数据的传输性能增强。当第一广播信号和第三广播信号为不同的广播信号时，该第二阈值承载于第三广播信号中且为消息3或消息A对应的信号质量的阈值，通过第一广播信号的能量和第二阈值的大小比较来衡量接收第一广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息3(Msg3)或消息A(MsgA)及后续上行数据的传输性能增强。
第四方面，本申请实施例提供了一种通信方法，该方法可以由通信装置执行。该通信装置可以是整体销售的设备，也可以是用于设备的芯片(系统)或电路，本申请对此不作限定。该方法包括：
发送第一广播信号；
所述第一广播信号用于和第一阈值确定终端设备对应的上行数据传输增强；或者，
所述第一广播信号用于和第二阈值确定所述终端设备对应的上行数据从消息3或消息A开始传输增强。
本申请实施例中，提供了一种通信方法，网络设备发送第一广播信号，通过该第一广播信号的能量使终端设备确定其对应的上行数据传输增强，此处的网络设备也可以是可用于执行计算机执行指令的处理器/芯片，本申请实施例对此不作限制。
本申请实施例中的第一广播信号可以是同步信号块(synchronization signal block，SSB)、系统信息块一(systeminformation block 1，SIB1)等终端设备初始接入过程中所必需的小区级信息，该第一广播信号的能量可以是信号质量。其中，在第一广播信号的能量小于第一阈值的情况下，确定终端设备对应的上行数据传输增强。可以理解的是，该情况下，通过衡量接收第一广播信号的能量大小来判断是否请求终端设备对应的上行数据传输增强，以实现消息5(Msg5)及后续上行数据的传输性能增强。或者，在第一广播信号的能量小于第二阈值的情况下，确定终端设备对应的上行数据从消息3(Msg3)或消息A(MsgA)开始传输增强。可以理解的是，该情况下，通过衡量接收第一广播信号的能量大小来判断是否请求终端设备对应的上行数据传输增强，以实现消息3(Msg3)或消息A(MsgA)及后续上行数据的传输性能增强。
本申请实施例中，可以通过衡量第一广播信号的能量大小来确定需要请求终端设备对应的上行数据传输增强，使得网络设备可以判断终端设备的上行传输性能需要增强，从而实现克服UE与网络设备(卫星基站)之间通信信号的信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入。
可选的，所述第一广播信号还用于和所述第二阈值确定所述终端设备对应的上行数据从消息3或消息A开始上行传输增强，至RRC重配消息结束上行传输增强。
结合上述第四方面，在一种可能的实施方式中，所述第一阈值承载于第二广播信号中，所述第一阈值为所述第一广播信号或者所述第二广播信号对应的信号质量的阈值，所述信号质量包括以下任一项或多项：
参考信号接收功率RSRP的阈值、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR、信噪比SNR。
在本申请实施方式中，提供了一种第一阈值的可能的具体实施方式，具体为，该第一阈值承载于第二广播信号中，且该第一阈值为第一广播信号或者第二广播信号对应的信号质量的阈值。可以理解的是，该第一广播信号和第二广播信号可以是相同的广播信号，也可以是不同的广播信号，本申请对此不作限制。该广播信号对应的信号质量可以包括但不限于参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、接收信号强度指示(received signal strength indicator，RSSI)、信号与干扰加噪声比(signal to interference plus noise ratio，SINR)、信噪比(signal noise ratio，SNR)。其中，当第一广播信号和第二广播信号为相同的某个广播信号时，该第一阈值承载于该广播信号中且为该广播信号对应的信号质量的阈值，通过该广播信号的能量和第一阈值的大小比较来衡量接收该广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息5(Msg5)及后续上行数据的传输性能增强。当第一广播信号和第二广播信号为不同的广播信号时，该第一阈值承载于第二广播信号中且为第一广播信号或者第二广播信号对应的信号质量的阈值，通过第一广播信号的能量和第一阈值的大小比较来衡量接收第一广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息5(Msg5)及后续上行数据的传输性能增强。
结合上述第四方面，在一种可能的实施方式中，所述第二阈值承载于第三广播信号中，所述第二阈值为所述消息3或所述消息A对应的信号质量的阈值，所述信号质量包括以下任一项或多项：
参考信号接收功率RSRP的阈值、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR、信噪比SNR。
在本申请实施方式中，提供了一种第二阈值的可能的具体实施方式，具体为，该第二阈值承载于第三广播信号中，且该第二阈值为消息3或消息A对应的信号质量的阈值。可以理解的是，该第一广播信号和第三广播信号可以是相同的广播信号，也可以是不同的广播信号，本申请对此不作限制。该广播信号对应的信号质量可以包括但不限于参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、接收信号强度指示(received signal strength indicator，RSSI)、信号与干扰加噪声比(signal to interference plus noise ratio，SINR)、信噪比(signal noise ratio，SNR)。其中，当第一广播信号和第三广播信号为相同的某个广播信号时，该第二阈值承载于该广播信号中且为消息3或消息A对应的信号质量的阈值，通过该广播信号的能量和第二阈值的大小比较来衡量接收该广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息3(Msg3)或消息A(MsgA)及后续上行数据的传输性能增强。当第一广播信号和第三广播信号为不同的广播信号时，该第二阈值承载于第三广播信号中且为消息3或消息A对应的信号质量的阈值，通过第一广播信号的能量和第二阈值的大小比较来衡量接收第一广播信号的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息3(Msg3)或消息A(MsgA)及后续上行数据的传输性能增强。
第五方面，本申请实施例提供了一种通信装置，该装置包括用于执行如第一方面任一项所述方法的模块或单元。
在一种可能的设计中，该装置包括：
通信单元，用于向网络设备发送第一信息，所述第一信息用于请求终端设备对应的上行数据传输增强，所述第一信息承载于所述终端设备的无线资源控制RRC连接建立消息中；
所述通信单元，还用于接收来自所述网络设备的第二信息，所述第二信息用于指示所述终端设备对应的上行数据传输增强。
在一种可能的实施方式中，该装置还包括：
处理单元，用于生成所述第一信息。
上述处理单元和通信单元执行的方法可参阅上述第一方面对应的方法，此处不再赘述。
关于第五方面以及任一项可能的实施方式所带来的技术效果，可参考对应于第一方面以及相应的实施方式的技术效果的介绍。
第六方面，本申请实施例提供了一种通信装置，该装置包括用于执行如第二方面任一项所述方法的模块或单元。
在一种可能的设计中，该装置包括：
通信单元，用于接收来自网络设备的第一广播信号；
处理单元，用于在所述第一广播信号的能量小于第一阈值的情况下，确定终端设备对应的上行数据传输增强；或者，
所述处理单元，还用于在所述第一广播信号的能量小于第二阈值的情况下，确定所述终端设备对应的上行数据从消息3或消息A开始传输增强。
上述处理单元和通信单元执行的方法可参阅上述第二方面对应的方法，此处不再赘述。
关于第六方面以及任一项可能的实施方式所带来的技术效果，可参考对应于第二方面以及相应的实施方式的技术效果的介绍。
第七方面，本申请实施例提供了一种通信装置，该装置包括用于执行如第三方面任一项所述方法的模块或单元。
在一种可能的设计中，该装置包括：
通信单元，用于接收来自终端设备的第一信息，所述第一信息用于请求所述终端设备对应的上行数据传输增强，所述第一信息承载于所述终端设备的无线资源控制RRC连接建立请求消息中；
所述通信单元，还用于向所述终端设备发送第二信息，所述第二信息用于指示所述终端设备对应的上行数据传输增强。
在一种可能的实施方式中，该装置还包括：
处理单元，用于生成所述第二信息。
上述处理单元和通信单元执行的方法可参阅上述第三方面对应的方法，此处不再赘述。
关于第七方面以及任一项可能的实施方式所带来的技术效果，可参考对应于第三方面以及相应的实施方式的技术效果的介绍。
第八方面，本申请实施例提供了一种通信装置，该装置包括用于执行如第四方面任一项所述方法的模块或单元。
在一种可能的设计中，该装置包括：
通信单元，用于发送第一广播信号；
所述第一广播信号用于和第一阈值确定终端设备对应的上行数据传输增强；或者，
所述第一广播信号用于和第二阈值确定所述终端设备对应的上行数据从消息3或消息A开始传输增强。
在一种可能的实施方式中，该装置还包括：
处理单元，用于生成所述第一广播信号。
上述处理单元和通信单元执行的方法可参阅上述第四方面对应的方法，此处不再赘述。
关于第八方面以及任一项可能的实施方式所带来的技术效果，可参考对应于第四方面以及相应的实施方式的技术效果的介绍。
可选的，在上述第五方面至第八方面任一方面以及任一项可能的实施方式所述的通信装置中：
在一种实现方式中，该通信装置为通信设备。当该通信装置为通信设备时，通信单元可以是收发器， 或，输入/输出接口；处理单元可以是至少一个处理器。可选地，收发器可以为收发电路。可选地，输入/输出接口可以为输入/输出电路。
在另一种实现方式中，该通信装置为用于通信设备中的芯片(系统)或电路。当该通信装置为用于通信设备中的芯片(系统)或电路时，通信单元可以是该芯片(系统)或电路上的通信接口(输入/输出接口)、接口电路、输出电路、输入电路、管脚或相关电路等；处理单元可以是至少一个处理器、处理电路或逻辑电路等。
第九方面，本申请实施例提供了一种通信装置，该通信装置包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第一方面至第四方面任一方面以及任一项可能的实施方式的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
第十方面，本申请实施例提供了一种通信装置，包括：逻辑电路和通信接口。所述通信接口，用于接收信息或者发送信息；所述逻辑电路，用于通过所述通信接口接收信息或者发送信息，使得所述通信装置执行上述第一方面至第四方面任一方面以及任一项可能的实施方式的方法。
第十一方面，本申请实施例提供了一种计算机可读存储介质，所述计算机可读存储介质用于存储计算机程序(也可以称为代码，或指令)；当所述计算机程序在计算机上运行时，使得上述第一方面至第四方面任一方面以及任一项可能的实施方式的方法被实现。
第十二方面，本申请实施例提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序(也可以称为代码，或指令)；当所述计算机程序被运行时，使得计算机执行上述第一方面至第四方面任一方面以及任一项可能的实施方式的方法。
第十三方面，本申请实施例提供一种芯片，该芯片包括处理器，所述处理器用于执行指令，当该处理器执行所述指令时，使得该芯片执行上述第一方面至第四方面任一方面以及任一项可能的实施方式的方法。可选的，该芯片还包括通信接口，所述通信接口用于接收信号或发送信号。
第十四方面，本申请实施例提供一种通信系统，所述通信系统包括至少一个如第五方面所述的通信装置，或第六方面所述的通信装置，或第七方面所述的通信装置，或第八方面所述的通信装置，或第九方面所述的通信装置，或第十方面所述的通信装置，或第十三方面所述的芯片。
第十五方面，本申请实施例提供了一种通信系统，所述通信系统包括终端设备和网络设备，所述终端设备用于执行上述第一方面至第二方面任一方面以及任一项可能的实施方式的方法，所述网络设备用于执行上述第三方面至第四方面任一方面以及任一项可能的实施方式的方法。
此外，在执行上述第一方面至第四方面任一方面以及任一项可能的实施方式所述的方法的过程中，上述方法中有关发送信息和/或接收信息等的过程，可以理解为由处理器输出信息的过程，和/或，处理器接收输入的信息的过程。在输出信息时，处理器可以将信息输出给收发器(或者通信接口、或发送模块)，以便由收发器进行发射。信息在由处理器输出之后，还可能需要进行其他的处理，然后才到达收发器。类似的，处理器接收输入的信息时，收发器(或者通信接口、或发送模块)接收信息，并将其输入处理器。更进一步的，在收发器收到该信息之后，该信息可能需要进行其他的处理，然后才输入处理器。
基于上述原理，举例来说，前述方法中提及的发送信息可以理解为处理器输出信息。又例如，接收信息可以理解为处理器接收输入的信息。
可选的，对于处理器所涉及的发射、发送和接收等操作，如果没有特殊说明，或者，如果未与其在相关描述中的实际作用或者内在逻辑相抵触，则均可以更加一般性的理解为处理器输出和接收、输入等操作。
可选的，在执行上述第一方面至第四方面任一方面以及任一项可能的实施方式所述的方法的过程中，上述处理器可以是专门用于执行这些方法的处理器，也可以是通过执行存储器中的计算机指令来执行这些方法的处理器，例如通用处理器。上述存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(Read Only Memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
在一种可能的实施方式中，上述至少一个存储器位于装置之外。
在又一种可能的实施方式中，上述至少一个存储器位于装置之内。
在又一种可能的实施方式之中，上述至少一个存储器的部分存储器位于装置之内，另一部分存储器位于装置之外。
本申请中，处理器和存储器还可能集成于一个器件中，即处理器和存储器还可以被集成在一起。
本申请实施例中，通过在RRC连接建立消息中携带请求终端设备对应的上行数据传输增强的信息，使得网络设备可以判断终端设备的上行传输性能需要增强，从而实现克服终端设备与网络设备之间通信信号的信号路径损耗，提高上行传输性能，使终端设备稳定地完成初始接入。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1A为本申请实施例提供的一种通信系统的架构示意图；
图1B为本申请实施例提供的一种通信系统的架构示意图；
图1C为本申请实施例提供的一种通信系统的架构示意图；
图2A为本申请实施例提供的一种通信系统的架构示意图；
图2B为本申请实施例提供的一种通信系统的架构示意图；
图3A为本申请实施例提供的一种随机接入的流程示意图；
图3B为本申请实施例提供的一种随机接入的流程示意图；
图4为本申请实施例提供的一种通信方法的流程示意图；
图5为本申请实施例提供的一种通信方法的流程示意图；
图6为本申请实施例提供的一种通信方法的流程示意图；
图7为本申请实施例提供的一种解决时机冲突的示意图；
图8为本申请实施例提供的一种通信装置的结构示意图；
图9为本申请实施例提供的一种通信装置的结构示意图；
图10为本申请实施例提供的一种芯片的结构示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图对本申请实施例进行描述。
本申请的说明书、权利要求书及附图中的术语“第一”和“第二”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备等，没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元等，或可选地还包括对于这些过程、方法、产品或设备等固有的其它步骤或单元。
在本文中提及的“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员可以显式地和隐式地理解的是，在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，各个实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
应当理解，在本申请中，“至少一个(项)”是指一个或者多个，“多个”是指两个或两个以上，“至少两个(项)”是指两个或三个及三个以上，“和/或”，用于描述关联对象的关联关系，表示可以存在三种关系，例如，“A和/或B”可以表示：只存在A，只存在B以及同时存在A和B三种情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b或c中的至少一项(个)，可以表示：a，b，c，“a和b”，“a和c”，“b和c”，或“a和b和c”，其中a，b，c可以是单个，也可以是多个。
需要说明的是，在本申请中，“指示”可以包括直接指示、间接指示、显示指示、隐式指示。当描述某一指示信息用于指示A时，可以理解为该指示信息携带A、直接指示A，或间接指示A。
本申请中，指示信息所指示的信息，称为待指示信息。在具体实现过程中，对待指示信息进行指示的方式有很多种，例如但不限于，可以直接指示待指示信息，如待指示信息本身或者该待指示信息的索引等。也可以通过指示其它信息来间接指示待指示信息，其中该其它信息与待指示信息之间存在关联关系。还可以仅仅指示待指示信息的一部分，而待指示信息的其它部分则是已知的或者提前约定的。例如，还可以借助预先约定(例如协议规定)的各个信息的排列顺序来实现对特定信息的指示，从而在一定程度上降低指示开销。待指示信息可以作为一个整体一起发送，也可以分成多个子信息分开发送，而且这些子信息的发送周期和/或发送时机可以相同，也可以不同。具体发送方法本申请不进行限定。其中，这些子信息的发送周期和/或发送时机可以是预先定义的，例如根据协议预先定义的，也可以是发射端设备通过向接收端设备发送配置信息来配置的。
需要说明的是，本申请中“发送”可以理解为“输出”，“接收”可以理解为“输入”。“向A发送信息”，其中“向A”只是表示信息传输的走向，A是目的地，不限制“向A发送信息”一定是空口上的直接发送。“向A发送信息”包括直接向A发送信息，也包括通过发射机间接向A发送信息，所以“向A发送信息”也可以理解为“输出去向A的信息”。同理，“接收来自A的信息”，表示该信息的来源是A，包括直接从A接收信息，也包括通过接收机间接接收来自A的信息，所以“接收来自A的信息”也可以理解为“输入来自A的信息”。
本申请提供了一种通信方法，应用于通信技术领域。可选的，可应用于如NTN通信场景下的随机接入。为了更清楚地描述本申请的方案，下面先介绍一些与NTN通信的随机接入相关的知识。
随着信息技术发展，现代通信系统对通信的高效、机动、多样性等提出更迫切的要求，目前，在一些重要应用场景，如空间通信、航空通信、海事通信、军事通信等领域，以卫星、无人机、高空平台等非地面设备为代表的NTN通信发挥着无可替代的作用。
为使说明方便，下文将以卫星为代表的非地面设备为例进行说明。
卫星通信具备通信距离远、覆盖面积大、组网灵活等特点，其既可为固定终端，也可为各种移动终端提供通信服务。由于传统地面网络不能为终端设备提供无缝覆盖，特别是在大海、沙漠、空中等无法部署基站的地方，因此，NTN被引入到第五代(the 5th generation，5G)移动通信系统中，它通过将基站或者部分基站功能部署在高空平台或者卫星上，为终端设备提供无缝覆盖的通信。并且高空平台或者卫星受自然灾害影响较小，能提升5G系统的可靠性。基于卫星部署的NTN中，卫星通过不同波束覆盖地面，形成卫星小区，同一时刻某一终端设备可以被多个卫星小区覆盖。
根据卫星的轨道高度可以将卫星通信系统分为如下三种：
地球静止轨道(geostationary earth orbit,GEO)卫星通信系统，也称同步轨道卫星系统，中地球轨道(medium earth orbit,MEO)卫星通信系统和低地球轨道(low earth orbit,LEO)卫星通信系统。
其中，GEO卫星轨道高度为35786km，其主要的优点是可以保持相对地面静止并且提供较大的覆盖面积。缺点为：1)GEO卫星轨道距离地球距离较远，自由空间传播损耗大，造成通信链路预算紧张，为了增大发射/接收增益需要为卫星配备较大口径的天线；2)通信传输时延大，可以达到在500ms左右往返时延，无法满足实时业务的需求；3)GEO轨道资源相对紧张、发射成本高并且无法为地球两极地区提供覆盖。
MEO卫星的轨道高度位于2000～35786km区间，优点是可以通过相对较少的卫星数目即可以实现全球覆盖，但是其轨道高度较LEO高，传输时延相比LEO卫星通信仍然较大。综合MEO卫星通信的优缺点，MEO卫星主要应用于定位与导航。
LEO卫星的轨道高度在300～2000km区间，LEO卫星比MEO和GEO轨道高度低，具有数据传播时延小、传输损耗小、发射成本相对低的优点。为提高卫星网络的整体信号处理能力与通信吞吐量，卫星运营商通过提高卫星数量来弥补单颗卫星通信能力的限制。在未来NTN通信系统中，终端设备接入系统后，终端设备在一段时间可以与多颗能够通信的卫星“可见”。此时，多颗卫星都可以为终端设备提供通信服务，这为多星协同传输提供了基础条件。
本申请实施例提供的技术方案可以应用于各种通信系统，例如，卫星通信系统，卫星通信与蜂窝网络融合的系统。其中，蜂窝网络系统可以包括但不限于：5G系统、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)系统、先进的长期演进(advanced long term evolution，LTE-A)系统、新空口(new radio，NR)系统、NR系统的演进系统、非授权频段上的LTE(LTE-based access to unlicensed spectrum，LTE-U)系统、非授权频段上的NR(NR-based access to unlicensed spectrum，NR-U)系统、无线局域网(wireless local area networks，WLAN)、无线保真(wireless fidelity，WiFi)、下一代通信系统或其他通信系统等。通常来说，传统的通信系统支持的连接数有限，也易于实现，然而，随着通信技术的发展，移动通信系统将不仅支持传统的通信，还将支持例如：设备到设备(device to device，D2D)通信，机器到机器(machine to machine，M2M)通信，机器类型通信(machine type communication，MTC)，车辆间(vehicle to vehicle，V2V)通信以及未来演进的其他通信系统等，本申请实施例也可以应用于这些通信系统。卫星通信系统可以包括各种非陆地网络系统，例如，卫星或无人机系统(unmanned aircraft system，UAS)平台等进行无线频率发射的网络，此处不再一一列举。
示例性的，下面以NTN系统为例，提供一种本方案的具体应用场景，该NTN系统具体可以是卫星通信系统或其他非陆地的网络系统，本方案中的通信方法可应用在卫星通信范畴。
请参阅图1A、图1B以及图1C，以5G通信系统为例，图1A、图1B以及图1C为本申请实施例提供的几种通信系统的架构示意图。
如图1A、图1B以及图1C所示，卫星的一个小区的覆盖区域中可存在一个或多个终端设备(如移动终端)和/或网络设备(如5G基站)。该小区的覆盖区域可以是卫星的一个或多个波束所覆盖的区域，或者是同NR系统中的小区级别相同的区域。
如图1A所示，为基于透传卫星的RAN架构的一种示例。其中，地面的基站(例如，地面的gNB)作为接入网设备；卫星用于实现信号中继透传；NTN网关用于转发来自卫星的信号或来自接入网设备的信号。NTN网关位于地面。在该网络结构中，终端设备通过卫星中继透传以及NTN网关转发向接入网设备发送NR Uu无线接口信号。地面接入网设备收到信号后，与地面的核心网设备按照传统技术中的陆地通信网络技术进行通信。类似的，当核心网设备向终端设备发信号时，地面的基站(例如，地面的gNB)也作为接入网设备，卫星也用于实现信号中继透传。具体与前述过程类似，此处不予赘述。在本示例中，地面的基站、卫星和NTN网关组成了一个NTN接入网设备。
如图1B所示，为基于再生卫星(regenerative satellite)的RAN架构的一种示例。其中，该卫星作为接入网设备或者卫星具有接入网设备功能。在该网络结构中，地面终端设备通过与卫星间的服务链路(service link)向接入网设备(即卫星)发送Uu无线接口信号。卫星作为接入网设备从终端设备接收Uu无线接口信号，并将收到的信号解析处理。卫星作为接入网设备通过馈电链路(feeder link)与地面的NTN网关交互信息。例如，卫星与地面的核心网设备交互NG口信息。卫星生成NG口信息，并通过地面的NTN网关向核心网发送NG口信息。类似的，核心网设备生成NG口信息，并通过地面的NTN网关向卫星发送NG口信息。在本示例中，卫星会产生如下信号：Uu口无线接口的信号，NTN网关与卫星之间的馈电链路上的卫星无线接口(satellite radio interface，SRI)的信号。在本示例中，可选的，卫星和NTN网关组成了一个NTN接入网设备。在这种再生卫星的RAN架构下，接入网设备之间可以有Xn接口，负责接入网设备之间的信令和数据交互。
如图1C所示，为基于再生卫星(regenerative satellite)的RAN架构的另一种示例。其中，卫星作为接入网设备的分布单元(distributed unit，DU)，而地面基站(例如，gNB-CU)作为接入网设备的集中单元(central unit，CU)。在该网络结构中，地面终端设备通过与卫星之间的服务链路(service link)向接入网设备的DU(即卫星)发送Uu无线接口信号。接入网设备的DU(即卫星)接收并解析来自终端设备的NR-Uu无线接口信号。例如，接入网设备的DU生成F1信息，接入网设备的DU通过馈电链路及NTN网关向接入网设备的CU发送F1口信息。接入网设备的CU生成F1口信息，接入网设备的CU通过NTN网关及馈电链路向接入网设备的DU发送F1口信息。地面的接入网设备的CU与地面的核心网设备按照传统技术中的陆地通信网络技术通信。在本示例中，卫星会产生如下信号：Uu口无线接口的信号，NTN网关与卫星之间的馈电链路上的卫星无线接口的信号。其中馈电链路传输F1口信息。在本示例中，地面的基站、卫星和NTN网关组成了一个NTN接入网设备。
可理解，实际部署中，上述系统中的卫星可以替换为高空平台(high altitude platform station，HAPS)等其他NTN设备，本申请对此不作限制。
该场景中的各个网元以及它们的接口说明如下：
终端设备：支持5G新空口的移动设备，典型的比如用户终端、可穿戴设备等移动设备。可以通过空口接入卫星网络并发起呼叫、上网等业务。
5G基站：主要是提供无线接入服务，调度无线资源给接入终端，提供可靠的无线传输协议和数据加密协议等。
5G核心网：包括用户接入控制，移动性管理，会话管理，用户安全认证，计费等业务。它由多个功能单元组成，可以分为控制面和数据面的功能实体。其中，接入与移动管理单元(access and mobility  management function，AMF)，负责用户接入管理，安全认证，还有移动性管理。位置管理单元(location management function，LMF)负责对目标终端的定位服务请求进行管理和控制，处理定位相关信息。用户面单元(user plane function，UPF)负责管理用户面数据的传输，流量统计等功能。
地面站：负责转发卫星基站和5G核心网之间的信令和业务数据。
5G新空口：用户设备和基站之间的无线链路。
Xn接口：为5G基站和基站之间的接口，主要用于切换等信令交互。
NG接口：为5G基站和5G核心网之间的接口，主要交互核心网的非接入层(non-access stratum，NAS)等信令，以及用户的业务数据。
本申请提供的技术方案主要涉及网络设备和终端设备两个执行主体，可应用于5G等通信系统，特别是应用在非地面网络的通信过程中。
本申请实施例中涉及的终端设备包括但不限于经由有线线路连接，如经由公共交换电话网络(public switched telephone networks，PSTN)、数字用户线路(digital subscriber line，DSL)、数字电缆、直接电缆连接；和/或另一数据连接网络；和/或经由无线接口，如：针对蜂窝网络、无线局域网(wireless local area network，WLAN)、诸如手持数字电视广播(digital video broadcast-handheld，DVB-H)网络的数字电视网络、卫星网络、调幅-调频(amplitude modulation-frequency modulation，AM-FM)广播发送器；和/或另一终端设备的被设置成接收/发送通信信号的装置；和/或物联网(internet of things，IoT)设备。被设置成通过无线接口通信的终端设备可以被称为“无线通信终端”、“无线终端”或“移动终端”。该终端设备的示例包括但不限于卫星电话或蜂窝电话；可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(personal communications system，PCS)终端；可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历和/或全球定位系统(global positioning system，GPS)接收器的个人数字助理(personal digital assistant，PDA)；以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。终端设备也可以称为用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、PDA、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等。
本申请实施例中涉及的网络设备可以在特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的一个或多个终端设备进行通信，也可以用于与一个或多个具有部分终端功能的基站进行通信(比如宏基站与微基站，如接入点，之间的通信)。可选地，该网络设备可以是卫星中的基站(base transceiver station，BTS)，LTE系统中的演进型基站(evolved Node B，eNB)，或者5G系统、NR系统中的下一代基站节点(next generation node base station，gNB)，以及其他卫星基站和卫星中继节点。另外，网络设备也可以为接入点(access point，AP)、传输节点(transport point，TRP)、中心单元(central unit，CU)或其它网络实体，并且可以包括以上网络实体功能中的部分或所有功能。
可以理解的是，本申请实施例中的网络/系统中具有通信功能的设备可称为通信设备。以图1A、图1B以及图1C示出的通信系统为例，通信设备可包括具有通信功能的网络设备和终端设备，网络设备和终端设备可以为上文所述的具体设备，此处不再赘述；通信设备还可包括通信系统中的其他设备，例如网络控制器、移动管理实体等其他网络实体，本申请实施例中对此不做限定。
还需要说明的是，在本申请中，“卫星”与“卫星网络设备”这两种描述是等效的。即，本申请中提及的卫星表示与卫星通信相关的卫星及其他网络设备的集合。
可以理解的是，NTN系统中的一个小区可以是卫星的一个波束在地面上的投影区域，也可以是卫星的多个波束在地面上的投影区域，或者还可能是一个波束或多个波束在地面上的投影区域的部分区域，本申请实施例对此不作限制。
示例性的，下面以D2D通信、M2M通信或V2X通信系统为例，提供一种本方案的具体应用场景，本方案中的通信方法可应用在上述通信范畴。
请参阅图2A，图2A为本申请实施例提供的一种通信系统的架构示意图。
如图2A所示，该通信系统包括一个核心网设备、两个基站和八个UE，如图2A中的核心网设备(CN)、基站1和基站2，以及UE1至UE8。该通信系统中，基站1可以向UE1至UE6发送配置信息或下行控制信息(downlink control information，DCI)等下行信号，UE1至UE6可以向基站1发送SRS或物理上行共享信道(physical uplink shared channel，PUSCH)等上行信号。基站1还可以通过基站2向UE7至UE8发送下行信号，UE7至UE8可以通过基站2向基站1发送上行信号。基站2可以向UE7至UE8发送配置信息或DCI等下行信号，UE7至UE8可以向基站2发送SRS或PUSCH等上行信号。可理解，对于UE之间的通信方式，可以参考上文图1A、图1B以及图1C中的相关描述，这里不再详述。
应理解，图2A示例性地示出了两个基站和八个UE，以及各通信设备之间的通信链路。可选地，该通信系统可以包括多个基站，并且每个基站的覆盖范围内可以包括其它数量的UE，例如更多或更少的UE等，本申请对此不做限定。
上述各个通信设备，如图2A中的核心网设备、基站1和基站2、UE1至UE8，可以配置多个天线。该多个天线可以包括至少一个用于发送信号的发射天线和至少一个用于接收信号的接收天线等，本申请实施例对于各个通信设备的具体结构不作限定。可选地，该通信系统还可以包括网络控制器、移动管理实体等其他网络实体，本申请实施例不限于此。
可理解，本通信系统中的终端设备的说明可以参考上述图1A、图1B以及图1C中的终端设备的描述，本通信系统中的接入网设备、核心网设备的说明可以参考上述图1A、图1B以及图1C中的网络设备的描述，此处不再赘述。
在一些部署中，接入网设备可以是集中式单元(centralized unit，CU)和分布式单元(distributed unit，DU)分离架构的基站(如gNB)。
具体可参阅图2B，图2B为本申请实施例提供的一种通信系统的架构示意图。
如图2B所示，CU和DU可以理解为是对基站从逻辑功能角度的划分。CU和DU在物理上可以是分离的也可以部署在一起。多个DU可以共用一个CU。一个DU也可以连接多个CU(图中未示出)。CU和DU之间可以通过接口相连，例如可以是F1接口。CU和DU可以根据无线网络的协议层划分。例如无线资源控制(radio resource control，RRC)、业务数据适配协议栈(service data adaptation protocol，SDAP)以及分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能设置在CU，而无线链路控制(radio link control，RLC)，媒体接入控制(media access control，MAC)层，物理(physical，PHY)层等的功能设置在DU。可以理解的是，对CU和DU处理功能按照这种协议层的划分仅仅是一种举例，也可以按照其他的方式进行划分。例如可以将CU或者DU划分为具有更多协议层的功能。例如，CU或DU还可以划分为具有协议层的部分处理功能。在一种设计中，将RLC层的部分功能和RLC层以上的协议层的功能设置在CU，将RLC层的剩余功能和RLC层以下的协议层的功能设置在DU。在另一种设计中，还可以按照业务类型或者其他系统需求对CU或者DU的功能进行划分。例如按时延划分，将处理时间需要满足时延要求的功能设置在DU，不需要满足该时延要求的功能设置在CU。在另一种设计中，CU也可以具有核心网的一个或多个功能。一个或者多个CU可以集中设置，也分离设置。例如CU可以设置在网络侧方便集中管理。DU可以具有多个射频功能，也可以将射频功能拉远设置。CU的功能可以由一个实体来实现也可以由不同的实体实现。例如，可以对CU的功能进行进一步切分，例如，将控制面(control plane，CP)和用户面(user plane，UP)分离，即CU的控制面(CU-CP)和CU用户面(CU-UP)。例如，CU-CP和CU-UP可以由不同的功能实体来实现，所述CU-CP和CU-UP可以与DU相耦合，共同完成基站的功能。一种可能的方式中，CU-CP负责控制面功能，主要包含RRC和PDCP-C。PDCP-C主要负责控制面数据的加解密，完整性保护，数据传输等。CU-UP负责用户面功能，主要包含SDAP和PDCP-U。其中，SDAP主要负责将核心网的数据进行处理并将数据流(flow)映射到承载。PDCP-U主要负责数据面的加解密，完整性保护，头压缩，序列号维护，数据传输等。其中CU-CP和CU-UP通过E1接口连接。CU-CP代表gNB通过Ng接口和核心网连接。通过F1-C(控制面)和DU连接。CU-UP通过F1-U(用户面)和DU连接。当然还有一种可能的实现是PDCP-C也在CU-UP。
可理解，上述图1A、图1B、图1C、图2A以及图2B所示的通信系统示意图仅为示例，对于其他形式的通信系统示意图可以参考相关标准或协议等，这里不再一一详述。
下文示出的各个实施例可以适用于图1A、图1B、图1C、图2A以及图2B所示的通信系统，也可以适用于其他形式的通信系统，对此，下文不再赘述。
可理解，上述通信场景下的随机接入过程，具体可参阅图3A和图3B，图3A和图3B为本申请实施例提供的两种随机接入的流程示意图。
如图3A所示，为基于竞争的四步随机接入，其具体流程如下：
S301：随机接入初始化。
随机接入过程可以分为基于竞争的随机接入和基于非竞争的随机接入两种。如果随机接入前导码(Preamble)由UE的MAC选择，则为基于竞争的随机接入；如果随机接入前导码(Preamble)由控制信令分配，则为非竞争的随机接入。
在基于竞争的四步随机接入过程中的随机接入初始化中，可用的物理随机接入信道(physical random access channel，PRACH)资源集合由网络侧通过系统信息配置给UE，PRACH资源包括PRACH的时域资源和PRACH的频域资源。UE从可用的随机接入前导中随机选择一个发送。其中，物理层物理接入信道索引用于指示终端设备可在系统帧内第几个子帧对应的物理随机接入信道(physical random access channel，PRACH)上发送前导码，终端设备可通过物理接入信道索引，查找对应表，确定前导码和可用的物理资源。
随机接入初始化要配置参数，这些参数包括：可用于传输随机接入前导码的PRACH资源集(如：PRACH-Config Index)；可用随机接入前导码分组(A组或B组)及每组中可用的前导码集合；前导码最大传输次数；前导码初始发射功率；功率抬升步长；随机接入响应窗；第三消息Msg3的混合自动重传请求(hybrid automatic repeat request，HARQ)最大重传次数；竞争解决定时器。
应理解，在每次随机接入过程触发前，上述配置的参数都可以通过高层配置进行更新。终端设备在获得上述参数后执行以下操作：清空第三消息Msg3缓存；将前导码发送的次数设置为1；将终端设备保存的退避(back off)参数值设置为0ms，并进入随机接入资源选择阶段。
还应理解，终端设备在任一时刻只进行一个随机接入过程。如果在一次随机接入过程中，终端设备收到新发起的随机接入请求，由终端设备侧的实现来决定继续正在进行的随机接入过程或启动新的随机接入过程。
S302：终端设备向网络设备发送随机接入前导码，相应的，网络设备接收来自终端设备的随机接入前导码。
具体的，随机接入前导码(random access preamble，RAP)承载于第一消息Msg1中。RAP的主要作用是告知网络设备有一个随机接入请求，并使得网络设备能估计其与终端设备之间的传输时延，以便接入网设备可以校准上行的提前量，并将校准信息通过定时提前命令告知终端设备。可选的，也可以称第一消息Msg1为随机接入前导码。
随着5G NR系统中引入新的随机接入场景，随机接入还可以用于新场景中终端设备的其他请求。例如，RAP还可以用于指示发送按需系统消息请求，或者用于指示发送波束失败恢复请求等等，本申请对此不作限定。例如，RAP可以与一个或多个按需系统消息请求具有对应关系，或者RAP可以与一个或多个波束失败恢复请求之间具有对应关系。终端设备可以预配置该RAP，或者接收接入网设备配置的该RAP。
S303：网络设备向终端设备发送随机接入响应，相应的，终端设备接收来自网络设备的随机接入响应。
具体的，终端设备可以利用随机接入无线网络临时标识(random access radio network temporary identifier，RA-RNTI)监听PDCCH，若接收到属于自己的调度信息，即下行控制信息(downlink control information，DCI)，终端设备根据DCI信息在物理下行共享信道(physical downlink shared channel，PDSCH)上接收来自网络设备下发的随机接入响应(random access response，RAR)消息。DCI信息包括诸如资源块(resource block，RB)分配信息、调制编码方式(modulation and coding scheme，MCS)等相关内容。
具体的，随机接入响应承载于第二消息Msg2中。在终端设备发送了Preamble后，会在RAR响应窗口内根据preamble对应的RA-RNTI值来监听对应的PDCCH。如果终端设备接收的响应中携带的Preamble与Msg1发送的Preamble一致，则停止监听RAR。具体而言，网络设备可以通过PDSCH向终端设备发送RAR。
RAR中包含上行定时提前量、为第三消息Msg3分配的上行授权(UL grant)、网络侧分配的临时小区无线网络临时标识(cell radio network temporary identifier,temporary C-RNTI，简称TC-RNTI)等。承载第二消息Msg2调度消息的PDCCH用RA-RNTI加扰。
应理解，如果多个终端设备在同一PRACH资源(时频位置相同)发送RAP，则对应的多个RAR复用在同一MAC协议数据单元(protocol data unit，PDU)中。
S304：终端设备向网络设备发送第三消息Msg3，相应的，网络设备接收来自终端设备发送的第三消息Msg3。
终端设备根据第二消息Msg2中的上行授权和上行定时提前量信息，通过PUSCH向网络设备发送第三消息Msg3。应理解，根据终端设备状态的不同和应用场景的不同，第三消息Msg3的内容也可能不同。
由于步骤S303中网络设备是将MAC PDU发送给多个终端设备的，因而每个终端设备接收到的RAR 可以不同，相应地，每个终端设备的行为也可能不同。每个终端设备在监听到属于自己的RAR后，可以根据RAR中包含的具体内容向接入网设备发送第三消息Msg3。第三消息Msg3可以分为以下几种：RRC连接请求、追踪区域数据更新、资源调度请求等。示例性的，下表一给出了一些第三消息Msg3的例子：
表一
S305：网络设备向终端设备发送竞争决议，即第四消息Msg4，相应的，终端设备接收来自网络设备的竞争决议。
当多个终端设备使用相同的前导码发起随机接入时，就会发生竞争。竞争相同资源的终端设备中最多只有一个终端设备能够接入成功。此时网络设备通过PDSCH向终端设备发送竞争解决消息。
具体的，终端设备在发送完第三消息Msg3后，开启竞争解决定时器(mac-contention resolution timer)，并利用RAR中指示的Temporary C-RNTI或者网络设备预先配置的C-RNTI来监听PDCCH，若在竞争解决定时器超时前，终端设备接收到来自网络设备发给自己的竞争解决消息(及竞争解决)，则认为随机接入过程成功。在竞争解决定时器超时前，网络设备可以通知终端设备进行重传第三消息Msg3。终端设备在重新发送第三消息Msg3之后，就会重启竞争解决定时器。
对于随机接入是由于初始接入和连接重建的场景：第四消息Msg4通过MAC层控制单元携带UE竞争解决标识(contention resolution ID)，该MAC CE中包含第三消息Msg3中传输的公共控制信道(common control channel，CCCH)服务数据单元(service data unit，SDU)，即RRC连接请求或RRC连接重建请求，UE在接收到该MAC CE后，与其在第三消息Msg3中发送的内容进行比较，二者相同或者该MAC CE中的内容属于其在第三消息Msg3中发送的部分信息(可选的，该部分信息包括终端设备标识)，则判定为竞争解决成功。在这两种场景下，UE之前并未分配C-RNTI，第四消息Msg4使用由临时C-RNTI(TC-RNTI)加扰的PDCCH调度，在竞争解决成功后，临时C-RNTI(TC-RNTI)升级为UE的C-RNTI。
在其他场景下，对于切换，上行数据到达以及下行数据到达这三种场景，UE之前已分配C-RNTI，第三消息Msg3也将C-RNTI通过MAC CE传输给了基站。基站用C-RNTI加扰的PDCCH调度第四消息Msg4，UE在接收到调度命令的时候就完成了竞争解决，第四消息Msg4中的具体内容已经与竞争解决无关(虽然这时候第四消息Msg4的具体内容与竞争解决无关，但由于是通过PDCCH调度第四消息Msg4，也可以理解为第四消息Msg4具有竞争决议的作用)。在这三种场景下，竞争解决成功后，临时C-RNTI(TC-RNTI)就被回收，基站可以将其分配给其他UE使用。第四消息Msg4也采用HARQ机制，但只有成功解码第四消息Msg4，并成功解决竞争的UE才反馈ACK，其他情况不进行反馈。
如图3B所示，为基于竞争的二步随机接入，其具体流程如下：
S306：终端设备向网络设备发送MsgA，相应的，网络设备接收来自终端设备的MsgA。
具体的，该MsgA包括随机接入信号和载荷数据，随机接入信号可以包括前导码Preamble和/或解调参考信号(demodulation reference signal，DMRS)，该随机接入信号用于载荷数据的接收，例如，可以根据该随机接入信号确定载荷数据的传输边界(比如传输载荷数据的时隙(slot)的起始位置和结束位置)或解调。该载荷数据可以为控制面数据和/或用户面数据，该载荷数据可以对应于上述四步随机接入机制中第三消息Msg3中包含的内容。例如，该载荷数据可以包括RRC连接请求、终端设备的标识、调度请求、缓存状态报告(buffer status report,BSR)和真实的业务数据等中的任意一种。
可选的，终端设备的标识可以为C-RNTI、临时移动用户标识(serving-temporary mobile subscriber identity,s-TMSI)、非激活状态下终端的标识(resume Identity)等等。具体携带什么标识，取决于不同的随机接入触发事件，不做限定。需要说明的是，该终端设备的标识可以全部携带于载荷数据中，或者可以部分携带于载荷数据中，部分携带于随机接入信号中。其中，携带于随机接入信号中，可以理解为，不同的序列或相同的序列但是不同的循环移位，来表示不同的比特值。示例性的，下表二给出了不同的随机接入触发事件对应的终端设备的标识：
表二
网络设备接收到MsgA之后，对随机接入信号和载荷数据进行解码，得到解码情况包括：(1)“成功解码”；(2)“未成功解码”。示例性的，下表三给出了可能出现的解码结果：
表三
进一步的，随机接入信号所在的资源与载荷数据所在的资源的可能关系如下：(1)在时域上存在重叠区域，在频域上没有重叠区域；(2)在时域上没有重叠区域，在频域上可以存在重叠区域，也可以不存在重叠区域。随机接入信号所在的资源和载荷数据所在的资源可以是由网络设备配置的。
应理解，本申请中提及的第三消息Msg3，可以指的是上述四步随机接入过程中的第三消息Msg3，也可以指的是上述二步随机接入过程中的MsgA中的载荷数据，本申请对此不作限制。
S307：网络设备向终端设备发送MsgB，相应的，终端设备接收来自网络设备的MsgB。
具体的，MsgB用于承载针对该随机接入信号和载荷数据的响应消息。该响应消息可以包括以下至少一项：临时C-RNTI的信息、定时提前命令(TA command)的信息、上行授权的信息、竞争解决标识(contention resolution ID)信息等。其中，竞争解决标识可以为载荷数据的部分或者全部内容。
此外，响应消息还包括控制面消息(也可以看作基于调度传输的应答消息)，例如，根据终端设备状态的不同和触发场景的不同，RAR还可以包括以下至少一项：RRC连接消息、RRC重建立消息、RRC恢复消息等。
其中，本申请所述的响应消息是指对请求随机接入的响应消息，也可以称为随机接入响应(消息)。
在上述通信场景下的随机接入过程中，在竞争解决之后，UE需要发送第五消息Msg5(即RRC setup complete，指示RRC建立完成)、鉴权NAS信令、UE能力上报、安全等信令传输。
对于Msg5等上行信令支持分片和重传，当链路预算不足以支撑大容量的数据传输时，可以进行分片降低每片承载的比特数，还可以进行重传来提升传输性能。当传输比特数大于单时隙可承载的比特数，需要通过分片来实现大负载的传输。
但是，上行大负载的PUSCH直接分片需要增加包头负载，从而导致需要占用的时隙数更多，多个分片将额外引入分片的包头负载，进一步增加传输负载。并且，分片后的PUSCH通过DCI调度进行传输，多次分片需要多个DCI信令，在初始接入阶段不支持一个DCI调度多个PUSCH，所以Msg5的多次分片就需要多个DCI进行调度，多个DCI传输会占用下行资源，影响系统容量。
对此，可以利用多时隙传输块(transport block over multi-slot，TBoMS)技术进行上行传输增强，支持一个传输块(transport block，TB)在多个时隙(slot)中传输，不引入分片增加的包头负载，也不需要多个DCI调度。
但是，在Msg5传输的时候，UE还没有上报UE能力，gNB不知道UE支持哪些能力，也没有判断是否要配置TBoMS传输的方法。并且，TBoMS在频分双工(frequency division duplex，FDD)下传输使用的是连续的时隙，在上行链路预算受限，上行通道资源有限的场景下，可能会与接入时机(random access channel occasion，RO)的接入资源冲突。
尤其在NTN通信场景下UE的随机接入过程中，以卫星通信为例，卫星作为基站，向UE配置随机接入资源，以实现UE的随机接入，卫星相对地面移动速度较大且信号传播距离更远，使得卫星作为基站的信号路径损耗更大，上行和下行传输性能受限，导致UE初始接入性能较低。
因此，为了实现卫星作为基站为UE提供通信服务，UE与卫星基站之间的通信信号如何克服信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入，成为亟待解决的技术问题。
鉴于此，本申请实施例提供了一种新的通信方法，通过在RRC连接建立消息中携带请求终端设备对应的上行数据传输增强的信息，使得网络设备可以判断终端设备的上行传输性能需要增强，从而实现克服UE与网络设备(卫星基站)之间通信信号的信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入。
请参阅图4，图4为本申请实施例提供的一种通信方法的流程示意图。该通信方法应用于通信技术领域，如NTN通信场景下的随机接入，该通信方法包括但不限于如下步骤：
S401：终端设备向网络设备发送第一信息，相应的，网络设备接收来自终端设备的第一信息。
S402：网络设备向终端设备发送第二信息，相应的，终端设备接收来自网络设备的第二信息。
可理解，本申请实施例中的网络设备为搭载了可用于执行计算机执行指令的处理器/芯片的设备，也可以是可用于执行计算机执行指令的处理器/芯片，本申请实施例对此不作限制。可选的，网络设备可以是接入网设备，比如基站、传输点TRP等，具体也可以是上述图1A、图1B、图1C、图2A、图2B中的接入网设备(包括但不限于如基站1和基站2中的任一设备)，用于执行本申请实施例中的通信方法，以实现提高上行传输性能，使UE稳定地完成初始接入。
可理解，本申请实施例中的终端设备为搭载了可用于执行计算机执行指令的处理器/芯片的设备，也可以是可用于执行计算机执行指令的处理器/芯片，本申请实施例对此不作限制。可选的，终端设备可以是手持终端(比如手机、平板电脑等)，也可以是车载终端(比如无人驾驶中的无线终端等)等，具体也可以是上述图1A、图1B、图1C、图2A中的终端设备(包括但不限于如UE1至UE8中的任一设备)，用于执行本申请实施例中的通信方法，以实现提高上行传输性能，使UE稳定地完成初始接入。
其中，上述第一信息用于请求终端设备对应的上行数据传输增强。
可选的，该第一信息承载于终端设备的无线资源控制(radio resource control，RRC)连接建立消息中。
可以理解的是，该第一信息具体请求如何进行上行数据传输增强，本申请实施例对此不作限制。比如，可以是请求通过多时隙传输块(transport block over multi-slot，TBoMS)技术使终端设备对应的上行数据的一个传输块(transport block，TB)在多个时隙上传输并且支持重复传输，也可以是请求终端设备对应的上行数据的一个TB在多个时隙上重复发送，还可以是请求通过传输块缩放因子(TB scaling)缩放数据量(Ninfo)，并通过编码后的速率匹配等效于进一步降低码率来增强上行数据传输性能。
其中，上述第二信息用于指示终端设备对应的上行数据传输增强。
可以理解的是，该第二信息具体指示如何进行上行数据传输增强，本申请实施例对此不作限制。比如，当第一信息中请求按照某种特定方式(如TBoMS技术)进行上行数据传输增强，则第二信息用于指示按照第一信息所请求的方式进行上行数据传输增强。当第一信息只请求进行上行数据传输增强，而未请求按照某种特定方式进行上行数据传输增强时，则第二信息用于指示进行上行数据传输增强的方式可以由网络设备决定。
可选的，当第一信息具体用于请求通过TBoMS技术使终端设备对应的上行数据的一个TB在多个时隙上传输并且支持重复传输以增强上行数据传输时，第二信息包括但不限于TBoMS占用的时隙数以及TBoMS传输的重复次数，此时的第二信息具体用于指示终端设备对应的上行数据通过TBoMS传输。
目前在终端设备的初始接入过程中，终端设备还没有上报自身能力，网络设备也不知道终端设备支持哪些能力，无法判断终端设备的上行传输性能是否需要增强。
而本申请实施例中，通过在RRC连接建立消息中携带请求终端设备对应的上行数据传输增强的信息，使得终端设备在RRC连接初始接入过程中就可以上报自身上行传输性能的能力，从而网络设备也可以获知终端设备的上行传输性能，判断终端设备的上行传输性能需要增强，从而实现克服UE与网络设备(卫星基站)之间通信信号的信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入。
可以理解的是，用于请求终端设备对应的上行数据传输增强的第一信息，在终端设备RRC连接初始接入过程中上报给网络设备即可，使得网络设备可以在RRC连接初始接入过程中及早的获知终端设备的上行传输性能，进而判断终端设备的上行传输性能需要增强，使UE稳定地完成初始接入。具体的，第一信息可以通过RRC连接初始接入过程中的RRC连接建立消息上报给网络设备，第一信息还可以通过RRC连接初始接入过程中的其他消息上报给网络设备，本申请实施例对此不作限制。
在一种可能的实施例中，针对第一信息承载于终端设备的RRC连接建立消息中，具体可以承载在不同的消息中，下面分情况进行说明：
情况一：
在终端设备的四步随机接入过程中，第一信息承载于消息3中，第二信息承载于消息4中。
可理解，本申请实施例中的消息3，也可以称为第三消息，或Msg3，本申请实施例中的消息4，也可以称为第四消息，或Msg4，其表示的含义相同，后文对此不再赘述。
可以理解的是，该情况一下，在终端设备的四步随机接入过程中，终端设备向网络设备发送消息3，该消息3携带了第一信息，相应的，网络设备接收来自终端设备的消息3，从而获取第一信息。网络设备向终端设备发送消息4，该消息4携带了第二信息，相应的，终端设备接收来自网络设备的消息4，从而获取第二信息。
通过本申请实施例，在终端设备的四步随机接入过程中，利用消息3(Msg3)携带第一信息请求上行数据传输增强，使得网络设备可以判断终端设备的上行传输性能需要增强，利用消息4(Msg4)携带第二信息指示上行数据传输增强，可以使得消息5(Msg5)及后续上行数据的传输性能增强，从而克服终端设备与网络设备之间通信信号的信号路径损耗，提高上行传输性能，使终端设备稳定地完成初始接入。
情况二：
在终端设备的二步随机接入过程中，第一信息承载于消息A中，第二信息承载于消息B中。
可理解，本申请实施例中的消息A，也可以称为MsgA，本申请实施例中的消息B，也可以称为MsgB，其表示的含义相同，后文对此不再赘述。
可以理解的是，该情况二下，在终端设备的二步随机接入过程中，终端设备向网络设备发送消息A，该消息A携带了第一信息，相应的，网络设备接收来自终端设备的消息A，从而获取第一信息。网络设备向终端设备发送消息B，该消息B携带了第二信息，相应的，终端设备接收来自网络设备的消息B，从而获取第二信息。
可选的，在二步随机接入过程中，第一信息(消息A)可以在物理随机接入信道(physical random access channel，PRACH)中，即可以是MsgA PRACH，具体可以通过在PRACH中增加序列、比特等表示。或者，第一信息(消息A)还可以利用特定的前导码(Preamble)隐式表达。或者，第一信息(消息A)也可以是MsgA PUSCH。
通过本申请实施例，在终端设备的二步随机接入过程中，利用消息A(MsgA)携带第一信息请求上行数据传输增强，使得网络设备可以判断终端设备的上行传输性能需要增强，利用消息B(MsgB)携带第二信息指示上行数据传输增强，可以使得后续上行数据的传输性能增强，从而克服终端设备与网络设备之间通信信号的信号路径损耗，提高上行传输性能，使终端设备稳定地完成初始接入。
可理解，上述通过情况一或情况二来说明第一信息和/或第二信息承载位置的情况仅作为可能的示例性说明，不应以此对本申请实施例构成限定，基于上述示例性情况的补充或合理变形所得到的实施例，均属于本申请实施例保护的范围。
在一种可能的实施例中，针对如何请求上行数据传输增强，具体可以通过不同的方式实现，下面分情况进行说明：
方式一：
通过第一信息实现上行数据传输增强请求。
其中，该第一信息包括一个比特，通过给该一个比特赋不同的值，可以表示请求或不请求终端设备对应的上行数据传输增强。
可选的，该一个比特的值为第一值，表示请求终端设备对应的上行数据传输增强。
可选的，该一个比特的值为第二值，表示不请求终端设备对应的上行数据传输增强，该第一值和第二值不同。
可选的，该一个比特的值为空值，表示不请求终端设备对应的上行数据传输增强；或者，上述第一信息包括的一个比特不存在，也可以表示不请求终端设备对应的上行数据传输增强。
示例性的，该一个比特置1(即第一值为1)，表示请求终端设备对应的上行数据传输增强，该一个比特置0(即第二值为0)，表示不请求终端设备对应的上行数据传输增强。
可以理解的是，该一个比特可以是复用RRC连接建立消息中的预留比特，比如，复用RRC连接建立消息中的字段“ul-EnhancementReq”中的预留比特，使能其指示请求上行数据传输增强的功能；该一个比特也可以是RRC连接建立消息中新增的比特，本申请实施例对此不做限制。
方式二：
通过MAC层数据包中的逻辑信道标识(logical channel ID，LCID)实现上行数据传输增强请求。
其中，用于承载上行数据传输增强请求的RRC连接建立消息携带在MAC层数据包中，MAC层数据包的包头中包括终端设备对应的上行数据传输增强对应的逻辑信道标识时，该逻辑信道标识用于表示请求终端设备对应的上行数据传输增强。
可理解，上述通过方式一或方式二来实现上行数据传输增强请求的方式仅作为可能的示例性说明，不应以此对本申请实施例构成限定，基于上述示例性方式的补充或合理变形所得到的实施例，均属于本申请实施例保护的范围。
在一种可能的实施例中，为解决终端设备的上行数据传输时机与接入时机可能冲突的问题，终端设备和网络设备还将执行包括但不限于以下步骤：
网络设备还向终端设备发送第三信息，相应的，终端设备接收来自网络设备的第三信息。
其中，该第三信息用于指示在时分复用传输的情况下，终端设备对应的上行数据传输占用的时隙与终端设备对应的四步随机接入过程中的消息1传输占用的时隙不同，或者，终端设备对应的上行数据传输占用的时隙与终端设备对应的二步随机接入过程中的消息A传输占用的时隙不同。
可以理解的是，该第三信息通过指示在时分复用传输的情况下，上行数据传输占用的时隙与四步随机接入过程中的消息1(Msg1)传输占用的时隙不同，来避免上行数据传输时机与接入时机发生冲突。或者，该第三信息通过指示在时分复用传输的情况下，上行数据传输占用的时隙与二步随机接入过程中的消息A(MsgA)传输占用的时隙不同，来避免上行数据传输时机与接入时机发生冲突。
目前在终端设备的初始接入过程中，上行数据传输使用的是连续的时隙，在上行链路预算受限，上行通道资源有限的场景下，上行数据的传输资源与接入时机的接入资源可能冲突，导致UE初始接入性能较低。
而本申请实施例中，通过第三信息的指示，使上行数据传输占用的时隙避开接入时机所占用的时隙，避免上行数据的传输资源与接入时机的接入资源发生冲突，从而提高上行传输性能，使UE稳定地完成初始接入。
可选的，该第三信息还用于指示在频分复用传输的情况下，终端设备对应的上行数据传输占用的时隙为连续的上行时隙。
可以理解的是，由于上行数据传输和随机接入消息传输在FDD频谱下采用的传输制式是FDD频分复用传输，因此不存在上行数据传输时机与接入时机发生冲突的问题。该场景下，终端设备对应的上行数据传输占用的时隙可以为连续的上行时隙，且上行数据传输占用的时隙与接入时机占用的时隙可以不同，也可以相同，具体可根据网络设备的需求确定。
在一种可能的实施例中，为实现终端设备准确判断是否需要请求上行数据传输增强，终端设备和网络设备还将执行包括但不限于以下步骤：
网络设备还发送第一广播信号，相应的，终端设备接收来自网络设备的第一广播信号。
可以理解的是，终端设备根据该第一广播信号的能量确定终端设备对应的上行数据传输增强。该第一广播信号可以是同步信号块(synchronization signal block，SSB)、系统信息块一(systeminformation block 1，SIB1)等终端设备初始接入过程中所必需的小区级信息。该第一广播信号的能量可以是信号质量，该信号能量可以包括但不限于参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、接收信号强度指示(received signal strength indicator，RSSI)、信号与干扰加噪声比(signal to interference plus noise ratio，SINR)、信噪比(signal noise ratio，SNR)。
可以理解的是，一般情况下，频分双工(frequency division duplexing，FDD)场景的上下行差异主要在于信道这种小尺度衰落。由于NTN信道偏视距(line of sight，LOS)径，上下行之间的传输距离、角度等诸多统计特征基本一致，可以认为上下行的大尺度衰落情况区别不大，上下行路损等可以参考。因此可以根据下行信号的RSRP性能确认是否需要做PUSCH上行增强。
具体的，针对第一广播信号的能量大小，确定终端设备对应的上行数据传输增强的方式不同，下面分情况进行说明：
情况一：
在第一广播信号的能量小于第一阈值的情况下，确定终端设备对应的上行数据传输增强。
其中，该第一阈值承载于第二广播信号中，且该第一阈值为第一广播信号或者第二广播信号对应的信号质量的阈值。
可选的，该第一阈值具体可以承载于第二广播信号中的字段“rsrp-thresholdMsg5”中。
可以理解的是，该第一阈值不是一个固定的值，可以根据不同的应用场景而调整，本申请实施例对此不做限制。
可以理解的是，该第二广播信号和第一广播信号可以是相同的广播信号，也可以是不同的广播信号，可以是SSB、SIB1等终端设备初始接入过程中所必需的小区级信息，本申请对此不作限制。
可选的，当该第二广播信号和第一广播信号为相同的某个广播信号时，该第一阈值承载于该广播信号中且为该广播信号对应的信号质量的阈值。
示例性的，该第二广播信号和第一广播信号均为SIB1，该第一阈值承载于SIB1中且为该SIB1对应的信号质量的阈值。
通过该广播信号(SIB1)的能量和第一阈值的大小比较来衡量接收该广播信号(SIB1)的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现四步随机接入过程中的消息5(Msg5)及后续上行数据的传输性能增强。
可选的，当该第二广播信号和第一广播信号为不同的广播信号时，该第一阈值承载于第二广播信号中且为第一广播信号或者第二广播信号对应的信号质量的阈值。
示例性的，该第二广播信号为SSB，第一广播信号为SIB1，该第一阈值承载于SSB中且为SIB1或SSB对应的信号质量的阈值。
具体的，可以通过DMRS参考信号检测SIB1的能量，并通过第一广播信号(SIB1)的能量和第一阈值的大小比较来衡量接收第一广播信号(SIB1)的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现四步随机接入过程中的消息5(Msg5)及后续上行数据的传输性能增强。
情况二：
在第一广播信号的能量小于第二阈值的情况下，确定终端设备对应的上行数据从消息3(Msg3)或消息A(MsgA)开始传输增强。
可选的，在第一广播信号的能量小于第二阈值的情况下，还确定终端设备对应的上行数据从消息3或消息A开始上行传输增强，至RRC重配消息结束上行传输增强。
其中，该第二阈值承载于第三广播信号中，且该第二阈值为消息3或消息A对应的信号质量的阈值。
可选的，该第二阈值具体可以承载于第三广播信号中的字段“rsrp-thresholdMsg3”或“rsrp-thresholdMsgA”中。
可以理解的是，该第二阈值不是一个固定的值，可以根据不同的应用场景而调整，本申请实施例对此不做限制。
可以理解的是，本情况二相当于将Msg5是否做上行增强与Msg3是否做上行增强绑定，当Msg3需要做上行增强时，则Msg5需要做上行增强；当Msg3不需要做上行增强时，则Msg5不需要做上行增强。
可以理解的是，该第三广播信号和第一广播信号可以是相同的广播信号，也可以是不同的广播信号，可以是SSB、SIB1等终端设备初始接入过程中所必需的小区级信息，本申请对此不作限制。
可选的，当该第三广播信号和第一广播信号为相同的某个广播信号时，该第二阈值承载于该广播信号中且为消息3或消息A对应的信号质量的阈值。
示例性的，该第三广播信号和第一广播信号均为SIB1，该第二阈值承载于SIB1中且为消息3或消息A对应的信号质量的阈值。
通过该广播信号(SIB1)的能量和第二阈值的大小比较来衡量接收该广播信号(SIB1)的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息3(Msg3)或消息A(MsgA)及后续上行数据的传输性能增强。
可选的，当该第三广播信号和第一广播信号为不同的广播信号时，该第二阈值承载于第三广播信号中且为消息3或消息A对应的信号质量的阈值。
示例性的，该第三广播信号为SSB，第一广播信号为SIB1，该第二阈值承载于SSB中且为SSB对应的信号质量的阈值。
通过第一广播信号(SIB1)的能量和第二阈值的大小比较来衡量接收第一广播信号(SIB1)的能量大小，进而判断是否请求终端设备对应的上行数据传输增强，以实现消息3(Msg3)或消息A(MsgA)及后续上行数据的传输性能增强。
本申请实施例中，可以通过衡量第一广播信号的能量大小来确定需要请求终端设备对应的上行数据传输增强，使得网络设备可以判断终端设备的上行传输性能需要增强，从而实现克服UE与网络设备(卫星基站)之间通信信号的信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入。
请参阅图5，图5为本申请实施例提供的一种通信方法的流程示意图。可以理解的是，本申请实施例中的步骤可以视为上述图4中的实施例的合理变形或补充；或者，可以理解的是，本申请实施例中的通信方法也可以视为能单独执行的实施例，本申请对此不作限制。本申请实施例提供的通信方法应用于通信技术领域，如NTN通信场景下的四步随机接入，该通信方法包括但不限于如下步骤：
网络设备向终端设备发送SIB1(承载在PDSCH)，相应的，终端设备接收来自网络设备的SIB1(承载在PDSCH)。
终端设备向网络设备发送Preamble(承载在PRACH)，相应的，网络设备接收来自终端设备的Preamble(承载在PRACH)。
网络设备向终端设备发送DCI 0_0(承载在PDCCH)，或者RAR with UE Grant(承载在PDCCH/PUSCH)，相应的，终端设备接收来自网络设备的DCI 0_0(承载在PDCCH)，或者RAR with UE Grant(承载在PDCCH/PUSCH)。
终端设备确定在Msg3中携带上行传输增强请求。
终端设备向网络设备发送Msg3(承载在PUSCH)，该Msg3携带上行传输增强请求，相应的，网络设备接收来自终端设备的Msg3(承载在PUSCH)。
网络设备向终端设备发送DCI 1_0(承载在PDCCH)，相应的，终端设备接收来自网络设备的DCI 1_0(承载在PDCCH)。
网络设备向终端设备发送Msg4(承载在PDSCH)，使能并配置上行传输增强技术(TBoMS)，相应的，终端设备接收来自网络设备的Msg4。
终端设备确定使用上行传输增强技术发送上行数据。
终端设备使用TBoMS向网络设备发送Msg5以及PUSCH，相应的，网络设备接收来自终端设备的Msg5以及PUSCH。
可以理解的是，上述四步随机接入的具体过程可参阅上述图3A的说明，此处不再赘述。
由图5可知，本申请实施例通过UE在RRC建立请求(四步随机接入过程中的Msg3)中请求初始接入过程中的上行数据传输增强，实现四步随机接入过程中的Msg5及后续上行信令的上行数据传输增强。
其中，UE通过字段“ul-EnhancementRequest”进行上行数据传输增强请求，该字段中的比特为1表示请求上行数据传输增强，该字段中的比特为0表示不请求上行数据传输增强。
网络侧接收RRC建立请求(四步随机接入过程中的Msg3)，根据字段“ul-EnhancementRequest”确定是否在Msg4(RRCSetup，RRC建立完成)中配置Msg5(RRCSetupComplete，RRC建立完成)及后续上行PUSCH使用TBoMS。
图5中以四步随机接入为例，UE接收网络侧发送的SIB1系统信息，获取小区信息。UE根据SIB1配置在对应的接入机会RO资源上发起随机接入，发送PRACH。网络侧接收UE侧的PRACH，进行响应，发送随机接入响应RAR。
UE侧判断是否需要进行Msg5及后续上行PUSCH传输的上行增强。如果需要请求，则在Msg3中用ul-EnhancementReq字段置为1表示请求后续PUSCH上行数据传输增强。如果不需要请求，则ul-EnhancementReq字段置为0表示不请求后续PUSCH上行数据传输增强。
网络侧接收UE侧发送的Msg3，并解读其中字段，确定UE侧是否请求上行数据传输增强。并根据需求确定是否在Msg4中进行TBoMS技术的配置。如果需要，则在Msg4中配置TBoMS占用的时隙数(number Of Slots-TBoMS-r17)和重复次数(number Of Repetitions)。
UE侧根据Msg4中的配置进行上行发送。
以四步随机接入为例，则可以在Msg3中增加ul-EnhancementReq-r17信元。对于Msg3，该信元原始为备用比特。
本申请实施例中，通过在RRC连接建立消息中携带请求终端设备对应的上行数据传输增强的信息，使得网络设备可以判断终端设备的上行传输性能需要增强，从而实现克服UE与网络设备(卫星基站)之间通信信号的信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入。
请参阅图6，图6为本申请实施例提供的一种通信方法的流程示意图。可以理解的是，本申请实施例中的步骤可以视为上述图4中的实施例的合理变形或补充；或者，可以理解的是，本申请实施例中的通信方法也可以视为能单独执行的实施例，本申请对此不作限制。本申请实施例提供的通信方法应用于通信技术领域，如NTN通信场景下的二步随机接入，该通信方法包括但不限于如下步骤：
网络设备向终端设备发送SIB1(PDSCH)，相应的，终端设备接收来自网络设备的SIB1(PDSCH)。
终端设备确定在MsgA中携带上行传输增强请求。
终端设备向网络设备发送Preamble(PRACH)，相应的，网络设备接收来自终端设备的Preamble(PRACH)。
终端设备向网络设备发送MsgA(PRACH、PUSCH)，该MsgA携带上行传输增强请求，相应的，网络设备接收来自终端设备的MsgA(PRACH、PUSCH)。
可以理解的是，针对二步随机接入过程中，上行传输增强请求携带在MsgA中是包括了Preamble(PRACH)和/或MsgA(PRACH、PUSCH)。
网络设备向终端设备发送竞争解决(PDCCH/PDSCH)，使能并配置上行传输增强技术(TBoMS)，相应的，终端设备接收来自网络设备的竞争解决。
网络设备向终端设备发送DCI 0_0/0_1/0_2，相应的，终端设备接收来自网络设备的DCI 0_0/0_1/0_2。
终端设备确定使用上行传输增强技术发送上行数据。
终端设备使用TBoMS向网络设备发送PUSCH，相应的，网络设备接收来自终端设备的PUSCH。
可以理解的是，上述二步随机接入的具体过程可参阅上述图3B的说明，此处不再赘述。
由图6可知，本申请实施例通过UE在RRC建立请求(二步随机接入过程中的MsgA)中请求初始接入过程中的上行数据传输增强，实现后续上行信令的上行数据传输增强。
图6中以二步随机接入为例，网络侧发送SIB1等系统信息。UE接收网络侧发送的SIB1等系统信息，获取小区信息。UE根据SIB1配置在对应的接入机会RO资源上发起随机接入，发送PRACH。UE判断是否需要做初始接入过程中的上行数据传输增强，在MsgA-PUSCH中携带请求指示。可选的，如果需要请求，则置1表示请求后续PUSCH上行数据传输增强，如果不需要请求，则置0表示不请求后续PUSCH上行数据传输增强。网络侧接收UE侧发送的MsgA，并解读其中字段，确定UE侧是否请求上行数据传输增强。并根据需求确定是否使能配置TBoMS。如果需要配置，则通过下行PDSCH承载TBoMS的配置信息。UE侧根据配置信息和DCI指示，确定是否要做上行数据传输增强。如果需要做增强，则根据PUSCH的重复传输次数和占用的时隙数，发送PUSCH。
本申请实施例中，通过在RRC连接建立消息中携带请求终端设备对应的上行数据传输增强的信息，使得网络设备可以判断终端设备的上行传输性能需要增强，从而实现克服UE与网络设备(卫星基站)之间通信信号的信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入。
此外，本申请还提供了一种终端设备准确判断是否需要请求上行数据传输增强的方法。可以理解的是，本申请实施例中的步骤可以视为上述图4或图5或图6中的实施例的合理变形或补充；或者，可以理解的是，本申请实施例中的方法也可以视为能单独执行的实施例，本申请对此不作限制。本申请实施例提供的方法应用于通信技术领域，如NTN通信场景下的随机接入，该方法包括但不限于如下步骤：
网络设备发送第一广播信号，相应的，终端设备接收来自网络设备的第一广播信号。
可以理解的是，终端设备根据该第一广播信号的能量确定终端设备对应的上行数据传输增强。该第一广播信号可以是同步信号块(synchronization signal block，SSB)、系统信息块一(systeminformation block 1，SIB1)等终端设备初始接入过程中所必需的小区级信息。该第一广播信号的能量可以是信号质量，该信号能量可以包括但不限于参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、接收信号强度指示(received signal strength indicator，RSSI)、信号与干扰加噪声比(signal to interference plus noise ratio，SINR)、信噪比(signal noise ratio，SNR)。
具体的，在第一广播信号的能量小于第一阈值的情况下，确定终端设备对应的上行数据传输增强。
或者，在第一广播信号的能量小于第二阈值的情况下，确定终端设备对应的上行数据从消息3(Msg3)或消息A(MsgA)开始传输增强。
其中，该第一阈值承载于第二广播信号中，且该第一阈值为第一广播信号或者第二广播信号对应的信号质量的阈值。
可选的，该第一阈值具体可以承载于第二广播信号中的字段“rsrp-thresholdMsg5”中，如BWP-UplinkCommon中。
可以理解的是，该第一阈值不是一个固定的值，可以根据不同的应用场景而调整，本申请实施例对此不做限制。
其中，该第二阈值承载于第三广播信号中，且该第二阈值为第一广播信号或者第二广播信号对应的信号质量的阈值，用于表征消息3或者消息A需要增强的门限。
可选的，该第二阈值具体可以承载于第三广播信号中的字段“rsrp-thresholdMsg3”或“rsrp-thresholdMsgA”中，如BWP-UplinkCommon中。
可以理解的是，该第二阈值不是一个固定的值，可以根据不同的应用场景而调整，本申请实施例对此不做限制。
可以理解的是，本实施例相当于将Msg5是否做上行增强与Msg3是否做上行增强绑定，当Msg3需要做上行增强时，则Msg5需要做上行增强；当Msg3不需要做上行增强时，则Msg5不需要做上行增强。
可选的，在第一广播信号的能量小于第二阈值的情况下，还确定终端设备对应的上行数据从消息3或消息A开始上行传输增强，至RRC重配消息结束上行传输增强。
可以理解的是，一般情况下，频分双工(frequency division duplexing，FDD)场景的上下行差异主要在于信道这种小尺度衰落。由于NTN信道偏视距(line of sight，LOS)径，上下行之间的传输距离、角度等诸多统计特征基本一致，可以认为上下行的大尺度衰落情况区别不大，上下行路损等可以参考。因此可以根据下行信号的RSRP性能确认是否需要做PUSCH上行增强。
可以理解的是，本申请实施例中的阈值(如第一阈值、第二阈值)可以根据不同应用场景而调整，例如，可以通过“RSRP-Range”这个字段进行配置。
可选的，假设地面场景，基站和UE的距离较近，UE侧能够收到的能量较强，RSRP门限可以配置高一些；卫星场景，基站和UE距离较远，UE侧收到的信号能量较弱，RSRP门限可以配置低一些。
可选的，还可以针对不同信道增强所需要的RSRP门限进行配置，假设上行消息1需要承载100比特，上行消息2需要承载1比特。由于这两类消息的上行传输增强需求不同，用于判断是否上行传输增强的RSRP门限就可以不同。比如，在传输上行消息1和上行消息2的场景下，上行消息1的RSRP门限可以小于上行消息2的RSRP门限。
本申请实施例中，可以通过衡量第一广播信号的能量大小来确定需要请求终端设备对应的上行数据传输增强，使得网络设备可以判断终端设备的上行传输性能需要增强，从而实现克服UE与网络设备(卫星基站)之间通信信号的信号路径损耗，提高上行传输性能，使UE稳定地完成初始接入。
此外，本申请还提供了一种解决终端设备的上行数据传输时机与接入时机冲突的方法。可以理解的是，本申请实施例中的步骤可以视为上述图4或图5或图6中的实施例的合理变形或补充；或者，可以理解的是，本申请实施例中的方法也可以视为能单独执行的实施例，本申请对此不作限制。本申请实施例提供的方法应用于通信技术领域，如NTN通信场景下的随机接入，该方法包括但不限于如下步骤：
网络设备向终端设备发送第三信息，相应的，终端设备接收来自网络设备的第三信息。
其中，该第三信息用于指示在时分复用传输的情况下，终端设备对应的上行数据传输占用的时隙与终端设备对应的四步随机接入过程中的消息1传输占用的时隙不同，或者，终端设备对应的上行数据传输占用的时隙与终端设备对应的二步随机接入过程中的消息A传输占用的时隙不同。
可以理解的是，该第三信息通过指示在时分复用传输的情况下，上行数据传输占用的时隙与四步随机接入过程中的消息1(Msg1)传输占用的时隙不同，来避免上行数据传输时机与接入时机发生冲突。或者，该第三信息通过指示在时分复用传输的情况下，上行数据传输占用的时隙与二步随机接入过程中的消息A(MsgA)传输占用的时隙不同，来避免上行数据传输时机与接入时机发生冲突。
可选的，该第三信息还用于指示在频分复用传输的情况下，终端设备对应的上行数据传输占用的时隙为连续的上行时隙。
可以理解的是，由于上行数据传输和随机接入消息传输采用的是频分复用传输，因此不存在上行数据传输时机与接入时机发生冲突的问题。该场景下，终端设备对应的上行数据传输占用的时隙可以为连续的上行时隙，且上行数据传输占用的时隙与接入时机占用的时隙可以不同，也可以相同，具体可根据网络设备的需求确定。
本申请实施例针对的问题是上行大负载PUSCH通过TBoMS技术占用的连续上行资源与接入机会RO资源冲突，影响初始接入过程。如果PUSCH和RO资源冲突，当网络侧的资源有限时，不能同时接收PUSCH和RO上的PRACH，导致UE的PUSCH传输或者PRACH受影响，从而影响了初始接入过程中的性能。
本实施例通过配置字段“AvailableSlotCounting”(可用时隙计数)使PUSCH传输避开RO所在时隙。
可选的，对于NTN FDD场景，当AvailableSlotCounting配置为enabled(使能)时，PUSCH传输的时隙需要避开RO所在时隙。当不配置AvailableSlotCounting时，PUSCH传输的时隙为连续的上行时隙。
可选的，当AvailableSlotCounting配置为enabled(使能)时，TBoMS的N*K个时隙可以包括非连续的上行时隙。其中N为一次TBoMS传输需要占用的时隙数，K为该TBoMS传输的重复次数。
具体可参阅图7，图7为本申请实施例提供的一种解决时机冲突的示意图。
如图7所示，当使能PUSCH传输避开RO后，网络侧在RO资源上只接收来自UE侧的PRACH。然后在避开RO资源的剩余上行时隙上接收来自UE的TBoMS PUSCH。
图7中时隙是以子载波间隔(sub-carrier spacing，SCS)＝30kHz为例，每个系统帧有20个时隙。每20ms内的RO资源共占用16个时隙，则每20ms的剩余时隙为24个时隙。当TBoMS占用的时隙数大于24个时隙时，剩下的时隙需要占用第二组空余时隙资源，比如图7中SFN#2-3的24个时隙不够，则继续占用SFN#4-5中避开RO资源后的剩余上行时隙。
当网络侧配置UE避开上行RO(AvailableSlotCounting配置为enabled)时，UE在避开RO的上行时隙上传输PUSCH。网络侧则在对应的上行时隙上接收UE侧的PUSCH。
当网络侧未配置UE避开上行RO(不配置AvailableSlotCounting时)，UE不需要避开RO所在的上行时隙，可以在RO资源所在的时隙上发送PUSCH。网络侧同样在对应的上行时隙上接收UE侧的PUSCH。
可选的，网络侧可以根据需求确定是否配置AvailableSlotCounting。具体为，上行数据和Preamble采用时分复用的方式传输时，网络侧确定配置AvailableSlotCounting，上行数据和Preamble采用频分复用的方式传输时，网络侧确定可以不配置AvailableSlotCounting。配置AvailableSlotCounting的目的就在于使上行数据(PUSCH)传输避开Preamble(RO)所在时隙。
本申请实施例中，通过第三信息(AvailableSlotCounting)的指示，使上行数据传输占用的时隙避开接入时机所占用的时隙，避免上行数据的传输资源与接入时机的接入资源发生冲突，从而提高上行传输性能，使UE稳定地完成初始接入。
上述详细阐述了本申请实施例的方法，下面提供用于实现本申请实施例中任一种方法的装置，例如，提供一种装置包括用以实现以上任一种方法中设备所执行的各步骤的单元(或手段)。
请参阅图8，图8为本申请实施例提供的一种通信装置的结构示意图。
如图8所示，该通信装置80可以包括通信单元801以及处理单元802。通信单元801以及处理单元802可以是软件，也可以是硬件，或者是软件和硬件结合。
其中，通信单元801可以实现发送功能和/或接收功能，通信单元801也可以描述为收发单元。通信单元801还可以是集成了获取单元和发送单元的单元，其中，获取单元用于实现接收功能，发送单元用于实现发送功能。可选的，通信单元801可以用于接收其他装置发送的信息，还可以用于向其他装置发送信息。
在一种可能的设计中，该通信装置80可对应于上述图4、图5、图6所示的方法实施例中的终端设备，如该通信装置80可以是终端设备，也可以是终端设备中的芯片。该通信装置80可以包括用于执行上述图4、图5、图6所示的方法实施例中由终端设备所执行的操作的单元，并且，该通信装置80中的各单元分别为了实现上述图4、图5、图6所示的方法实施例中由终端设备所执行的操作。其中，各个单元的描述如下：
通信单元801，用于执行如上述图4、图5、图6所示的方法实施例中由终端设备发送/接收等输入输出功能；
处理单元802，用于执行如上述图4、图5、图6所示的方法实施例中由终端设备生成信息，检测能量，确定传输增强等处理功能。
上述处理单元802和通信单元801执行的方法可参阅上述图4、图5、图6对应的方法，此处不再赘述。
关于本设计以及任一项可能的实施方式所带来的技术效果，可参考上述图4、图5、图6对应方法的技术效果的介绍。
在图8所示的通信装置80的另一种可能的设计中，该通信装置80可对应于上述图4、图5、图6所示的方法实施例中的网络设备，如该通信装置80可以是网络设备，也可以是网络设备中的芯片。该通信装置80可以包括用于执行上述图4、图5、图6所示的方法实施例中由网络设备所执行的操作的单元，并且，该通信装置80中的各单元分别为了实现上述图4、图5、图6所示的方法实施例中由网络设备所执行的操作。其中，各个单元的描述如下：
通信单元801，用于执行如上述图4、图5、图6所示的方法实施例中由网络设备发送/接收等输入输出功能；
处理单元802，用于执行如上述图4、图5、图6所示的方法实施例中由网络设备生成信息等处理功能。
上述处理单元802和通信单元801执行的方法可参阅上述图4、图5、图6对应的方法，此处不再赘述。
关于本设计以及任一项可能的实施方式所带来的技术效果，可参考上述图4、图5、图6对应方法的技术效果的介绍。
可选的，在上述任一设计以及任一项可能的实施方式所述的通信装置中：
在一种实现方式中，该通信装置为通信设备。当该通信装置为通信设备时，通信单元可以是收发器，或，输入/输出接口；处理单元可以是至少一个处理器。可选地，收发器可以为收发电路。可选地，输入/输出接口可以为输入/输出电路。
在另一种实现方式中，该通信装置为用于通信设备中的芯片(系统)或电路。当该通信装置为用于通信设备中的芯片(系统)或电路时，通信单元可以是该芯片(系统)或电路上的通信接口(输入/输出接口)、接口电路、输出电路、输入电路、管脚或相关电路等；处理单元可以是至少一个处理器、处理电路或逻辑电路等。
根据本申请实施例，图8所示的装置中的各个单元可以分别或全部合并为一个或若干个另外的单元来构成，或者其中的某个(些)单元还可以再拆分为功能上更小的多个单元来构成，这可以实现同样的操作，而不影响本申请的实施例的技术效果的实现。上述单元是基于逻辑功能划分的，在实际应用中，一个单元的功能也可以由多个单元来实现，或者多个单元的功能由一个单元实现。在本申请的其它实施例中，基于电子设备也可以包括其它单元，在实际应用中，这些功能也可以由其它单元协助实现，并且可以由多个单元协作实现。
需要说明的是，各个单元的实现还可以对应参照上述图4、图5、图6所示的方法实施例的相应描述。
在图8所描述的通信装置80中，通过在RRC连接建立消息中携带请求终端设备对应的上行数据传输增强的信息，使得网络设备可以判断终端设备的上行传输性能需要增强，从而实现克服终端设备与网络设备之间通信信号的信号路径损耗，提高上行传输性能，使终端设备稳定地完成初始接入。
请参阅图9，图9为本申请实施例提供的一种通信装置的结构示意图。
应理解，图9示出的通信装置90仅是示例，本申请实施例的通信装置还可包括其他部件，或者包括与图9中的各个部件的功能相似的部件，或者并非要包括图9中所有部件。
通信装置90包括通信接口901和至少一个处理器902。
该通信装置90可以对应终端设备、网络设备中的任一节点或设备。通信接口901用于收发信号，至少一个处理器902执行程序指令，使得通信装置90实现上述方法实施例中由对应设备所执行的方法的相应流程。
在一种可能的设计中，该通信装置90可对应于上述图4、图5、图6所示的方法实施例中的终端设备，如该通信装置90可以是终端设备，也可以是终端设备中的芯片。该通信装置90可以包括用于执行上述方法实施例中由终端设备所执行的操作的部件，并且，该通信装置90中的各部件分别为了实现上述方法实施例中由终端设备所执行的操作。具体可以如下所示：
通信接口901，用于执行如上述图4、图5、图6所示的方法实施例中由终端设备发送/接收等输入输出功能；
处理器902，用于执行如上述图4、图5、图6所示的方法实施例中由终端设备生成信息，检测能量，确定传输增强等处理功能。
在另一种可能的设计中，该通信装置90可对应于上述图4、图5、图6所示的方法实施例中的网络设备，如该通信装置90可以是网络设备，也可以是网络设备中的芯片。该通信装置90可以包括用于执行上述方法实施例中由网络设备所执行的操作的部件，并且，该通信装置90中的各部件分别为了实现上述方法实施例中由网络设备所执行的操作。具体可以如下所示：
通信接口901，用于执行如上述图4、图5、图6所示的方法实施例中由网络设备发送/接收等输入输出功能；
处理器902，用于执行如上述图4、图5、图6所示的方法实施例中由网络设备生成信息等处理功能。
在图9所描述的通信装置90中，通过在RRC连接建立消息中携带请求终端设备对应的上行数据传输增强的信息，使得网络设备可以判断终端设备的上行传输性能需要增强，从而实现克服终端设备与网络设备之间通信信号的信号路径损耗，提高上行传输性能，使终端设备稳定地完成初始接入。
对于通信装置可以是芯片或芯片系统的情况，可参阅图10所示的芯片的结构示意图。
如图10所示，芯片100包括处理器1001和接口1002。其中，处理器1001的数量可以是一个或多个，接口1002的数量可以是多个。需要说明的是，处理器1001、接口1002各自对应的功能既可以通过硬件设计实现，也可以通过软件设计来实现，还可以通过软硬件结合的方式来实现，这里不作限制。
可选的，芯片100还可以包括存储器1003，存储器1003用于存储必要的程序指令和数据。
本申请中，处理器1001可用于从存储器1003中调用本申请的一个或多个实施例提供的通信方法在终端设备、网络设备中一个或多个设备或节点的实现程序，并执行该程序包含的指令。接口1002可用于输出处理器1001的执行结果。本申请中，接口1002可具体用于输出处理器1001的各个消息或信息。
关于本申请的一个或多个实施例提供的通信方法可参考前述图4、图5、图6所示各个实施例，这里不再赘述。
本申请实施例中的处理器可以是中央处理单元(Central Processing Unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
本申请实施例中的存储器用于提供存储空间，存储空间中可以存储操作系统和计算机程序等数据。存储器包括但不限于是随机存储记忆体(random access memory，RAM)、只读存储器(read-only memory，ROM)、可擦除可编程只读存储器(erasable programmable read only memory，EPROM)、或便携式只读存储器(compact disc read-only memory，CD-ROM)。
根据本申请实施例提供的方法，本申请实施例还提供一种计算机可读存储介质，上述计算机可读存储介质中存储有计算机程序，当上述计算机程序在一个或多个处理器上运行时，可以实现上述图4、图5、图6所示的方法。
根据本申请实施例提供的方法，本申请实施例还提供一种计算机程序产品，上述计算机程序产品包括计算机程序，当上述计算机程序在处理器上运行时，可以实现上述图4、图5、图6所示的方法。
本申请实施例还提供了一种系统，该系统包括至少一个如上述通信装置80或通信装置90或芯片100，用于执行上述图4、图5、图6任一实施例中相应设备执行的步骤。
本申请实施例还提供了一种系统，该系统包括终端设备和网络设备，该终端设备用于执行上述图4、图5、图6任一实施例中终端设备执行的步骤，该网络设备用于执行上述图4、图5、图6任一实施例中网络设备执行的步骤。
本申请实施例还提供了一种处理装置，包括处理器和接口；所述处理器用于执行上述任一方法实施例中的方法。
应理解，上述处理装置可以是一个芯片。例如，该处理装置可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，还可以是系统芯片(system on chip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(doubledata rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disc，SSD))等。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。

Claims (27)

  1. 一种通信方法，其特征在于，包括：
    向网络设备发送第一信息，所述第一信息用于请求终端设备对应的上行数据传输增强，所述第一信息承载于所述终端设备的无线资源控制RRC连接建立消息中；
    接收来自所述网络设备的第二信息，所述第二信息用于指示所述终端设备对应的上行数据传输增强。
  2. 根据权利要求1所述的方法，其特征在于，在所述终端设备的四步随机接入过程中，所述RRC连接建立消息承载于消息3中，所述第二信息承载于消息4中。
  3. 根据权利要求1所述的方法，其特征在于，在所述终端设备的二步随机接入过程中，所述RRC连接建立消息承载于消息A中，所述第二信息承载于消息B中。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述第一信息包括一个比特，所述一个比特的值为第一值，所述第一值表示请求所述终端设备对应的所述上行数据传输增强。
  5. 根据权利要求1至3中任一项所述的方法，其特征在于，所述终端设备的RRC连接建立消息携带在媒体接入控制MAC层数据包中，所述MAC层数据包的包头中包括用于表示所述终端设备对应的上行数据传输增强对应的逻辑信道标识。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述第二信息包括以下至少一项：多时隙传输块TBoMS占用的时隙数，所述TBoMS传输的重复次数；
    所述第二信息具体用于指示所述终端设备对应的上行数据通过所述TBoMS传输。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，所述方法还包括：
    接收来自所述网络设备的第三信息，所述第三信息用于指示在时分复用传输的情况下，所述终端设备对应的上行数据传输占用的时隙与所述终端设备对应的四步随机接入过程中的消息1传输占用的时隙不同，或者，所述终端设备对应的上行数据传输占用的时隙与所述终端设备对应的二步随机接入过程中的消息A传输占用的时隙不同。
  8. 根据权利要求7所述的方法，其特征在于，所述第三信息还用于指示在频分复用传输的情况下，所述终端设备对应的上行数据传输占用的时隙为连续的上行时隙。
  9. 一种通信方法，其特征在于，包括：
    接收来自网络设备的第一广播信号；
    在所述第一广播信号的能量小于第一阈值的情况下，确定终端设备对应的上行数据传输增强；或者，
    在所述第一广播信号的能量小于第二阈值的情况下，确定所述终端设备对应的上行数据从消息3或消息A开始传输增强。
  10. 根据权利要求9所述的方法，其特征在于，所述第一阈值承载于第二广播信号中，所述第一阈值为所述第一广播信号或者所述第二广播信号对应的信号质量的阈值，所述信号质量包括以下任一项或多项：
    参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR、信噪比SNR。
  11. 根据权利要求9所述的方法，其特征在于，所述第二阈值承载于第三广播信号中，所述第二阈值为所述消息3或所述消息A对应的信号质量的阈值，所述信号质量包括以下任一项或多项：
    参考信号接收功率RSRP的阈值、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR、信噪比SNR。
  12. 一种通信方法，其特征在于，包括：
    接收来自终端设备的第一信息，所述第一信息用于请求所述终端设备对应的上行数据传输增强，所述第一信息承载于所述终端设备的无线资源控制RRC连接建立请求消息中；
    向所述终端设备发送第二信息，所述第二信息用于指示所述终端设备对应的上行数据传输增强。
  13. 根据权利要求12所述的方法，其特征在于，在所述终端设备的四步随机接入过程中，所述RRC连接建立消息承载于消息3中，所述第二信息承载于消息4中。
  14. 根据权利要求12所述的方法，其特征在于，在所述终端设备的二步随机接入过程中，所述RRC连接建立消息承载于消息A中，所述第二信息承载于消息B中。
  15. 根据权利要求12至14中任一项所述的方法，其特征在于，所述第一信息包括一个比特，所述一个比特的值为第一值，所述第一值表示请求所述终端设备对应的所述上行数据传输增强。
  16. 根据权利要求12至14中任一项所述的方法，其特征在于，所述终端设备的RRC连接建立消息携带在媒体接入控制MAC层数据包中，所述MAC层数据包的包头中包括用于表示所述终端设备对应的上行数据传输增强对应的逻辑信道标识。
  17. 根据权利要求12至16中任一项所述的方法，其特征在于，所述第二信息包括以下至少一项：多时隙传输块TBoMS占用的时隙数，所述TBoMS传输的重复次数；
    所述第二信息具体用于指示所述终端设备对应的上行数据通过所述TBoMS传输。
  18. 根据权利要求12至17中任一项所述的方法，其特征在于，所述方法还包括：
    向所述终端设备发送第三信息，所述第三信息用于指示在时分复用传输的情况下，所述终端设备对应的上行数据传输占用的时隙与所述终端设备对应的四步随机接入过程中的消息1传输占用的时隙不同，或者，所述终端设备对应的上行数据传输占用的时隙与所述终端设备对应的二步随机接入过程中的消息A传输占用的时隙不同。
  19. 根据权利要求18所述的方法，其特征在于，所述第三信息还用于指示在频分复用传输的情况下，所述终端设备对应的上行数据传输占用的时隙为连续的上行时隙。
  20. 一种通信方法，其特征在于，包括：
    发送第一广播信号；
    所述第一广播信号用于和第一阈值确定终端设备对应的上行数据传输增强；或者，
    所述第一广播信号用于和第二阈值确定所述终端设备对应的上行数据从消息3或消息A开始传输增强。
  21. 根据权利要求20所述的方法，其特征在于，所述第一阈值承载于第二广播信号中，所述第一阈值为所述第一广播信号或者所述第二广播信号对应的信号质量的阈值，所述信号质量包括以下任一项或多项：
    参考信号接收功率RSRP的阈值、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR、信噪比SNR。
  22. 根据权利要求20所述的方法，其特征在于，所述第二阈值承载于第三广播信号中，所述第二阈值为所述消息3或所述消息A对应的信号质量的阈值，所述信号质量包括以下任一项或多项：
    参考信号接收功率RSRP的阈值、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR、信噪比SNR。
  23. 一种通信装置，其特征在于，包括用于执行如权利要求1至11或权利要求12至22中任一项所述方法的模块或单元。
  24. 一种通信装置，其特征在于，包括：处理器；
    当所述处理器调用存储器中的计算机程序或指令时，使如权利要求1至11中任一项所述的方法被执行，或权利要求12至22中任一项所述的方法被执行。
  25. 一种通信装置，其特征在于，包括逻辑电路和接口，所述逻辑电路和所述接口耦合；
    所述接口用于输入待处理的数据，所述逻辑电路按照如权利要求1至11或权利要求12至22中任一项所述的方法对所述待处理的数据进行处理，获得处理后的数据，所述接口用于输出所述处理后的数据。
  26. 一种计算机可读存储介质，其特征在于，包括：
    所述计算机可读存储介质用于存储指令或计算机程序；当所述指令或所述计算机程序被执行时，使如权利要求1至11中任一项所述的方法被实现，或权利要求12至22中任一项所述的方法被实现。
  27. 一种计算机程序产品，其特征在于，包括：指令或计算机程序；
    所述指令或所述计算机程序被执行时，使如权利要求1至11中任一项所述的方法被执行，或权利要求12至22中任一项所述的方法被执行。
PCT/CN2024/095349 2023-06-13 2024-05-24 通信方法及相关装置 Pending WO2024255571A1 (zh)

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CN115119329A (zh) * 2021-03-23 2022-09-27 维沃移动通信有限公司 随机接入方法、装置、终端及网络侧设备
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