WO2020030087A1 - 随机接入方法、装置、设备及存储介质 - Google Patents

随机接入方法、装置、设备及存储介质 Download PDF

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Publication number
WO2020030087A1
WO2020030087A1 PCT/CN2019/099936 CN2019099936W WO2020030087A1 WO 2020030087 A1 WO2020030087 A1 WO 2020030087A1 CN 2019099936 W CN2019099936 W CN 2019099936W WO 2020030087 A1 WO2020030087 A1 WO 2020030087A1
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Prior art keywords
message
identification information
terminal device
send
random access
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PCT/CN2019/099936
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English (en)
French (fr)
Inventor
吴霁
朱俊
贾琼
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to EP19847443.9A priority Critical patent/EP3836712B1/en
Priority to BR112021002427-1A priority patent/BR112021002427A2/pt
Publication of WO2020030087A1 publication Critical patent/WO2020030087A1/zh
Priority to US17/171,076 priority patent/US11882603B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H04J13/18—Allocation of orthogonal codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • 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
    • 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
    • H04W74/0836—Random access procedures, e.g. with 4-step access with 2-step access

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a random access method, device, device, and storage medium.
  • the terminal device After the terminal device searches for a cell, it can perform downlink synchronization with the cell to be able to receive downlink data. However, the terminal device needs to perform uplink synchronization with the cell before sending uplink data.
  • the terminal device can perform uplink synchronization with the cell through a competitive random access process.
  • the competitive random access process is completed in four steps: the terminal device sends a preamble (that is, Msg1) to the network device, and the network device sends the The terminal device sends a Random Access Response (RAR) (that is, Msg2), and then the terminal device and the network device perform the first uplink scheduling transmission (that is, Msg3), and finally the network device feeds back the contention resolution to the terminal device (that is, Is Msg4).
  • RAR Random Access Response
  • This application provides a random access method, device, device, and storage medium to simplify the random access process, reduce delay, and reduce signaling overhead.
  • the present application provides a communication method, including: sending a first message to a network device, where the first message includes first identification information scrambled by using an orthogonal cover code OCC, and the first message is used for all
  • the terminal device corresponding to the first identification information requests random access to the network device; and receives a second message sent by the network device, where the second message includes identification information of one or more terminal devices that have succeeded in random access. Whether the random access is successful may be determined according to whether the identification information of the one or more terminal devices includes the first identification information.
  • This application proposes a two-step random access method, which simplifies the process of random access, reduces the access delay of random access, and reduces signaling overhead.
  • the orthogonal identification code OCC is used to scramble the first identification information of the terminal device, which can increase the possibility of different first identification information of different terminal devices, thereby reducing the collision probability of different terminal devices during the random access process. Improved the capacity of the random access channel.
  • the first message may further include a preamble sequence
  • the corresponding second message further includes a timing advance TA generated by the network device according to the preamble sequence, which may improve accuracy of uplink synchronization.
  • mapping relationship between the preamble sequence and the OCC there is a mapping relationship between a frequency domain resource used to send the preamble sequence and a frequency domain resource used to send the first identification information.
  • the network device it is convenient for the network device to detect the first message, that is, when one of them is detected, the other can be obtained, thereby reducing the complexity of blindly detecting the first message by the network device and improving the efficiency of the network device receiving the first message.
  • a frequency domain resource used to send the preamble sequence is the same as a frequency domain resource used to send the first identification information, or a frequency domain resource used to send the preamble sequence and used to send the first There is a preset offset between the frequency domain resources of the identification information.
  • the random access wireless network temporary identity RA-RNT of the terminal device is determined by using OCC that scrambles the first identity information. Can reduce the collision probability of RA-RNTI.
  • the RA-RNTI uses an OCC that scrambles the first identification information, a sequence number of a frequency domain resource used to send the first message, and a sequence number of a time domain resource used to send the first message. And / or the total number of OCCs selectable by the terminal device is determined. In this way, the possibility of different RA-RNTIs determined by different terminal devices according to different OCCs can be further increased, thereby reducing the collision probability of RA-RNTI.
  • the sequence number of the frequency domain resource used to send the first message is used for sending The sequence number of the frequency domain resource of the first message.
  • the method further includes: if the identification information of the one or more terminal devices includes the first identification information, sending to the network The device sends a third message, where the third message is used to indicate that the terminal device corresponding to the first identification information succeeds in random access; if the identification information of the one or more terminal devices does not include the first identification information Or, the terminal device that sent the first message fails to decode the second message, then sends a fourth message to the network device, so that the network device resends the terminal device to the terminal device according to the fourth message.
  • the second message is described, and the fourth message is used to indicate that the terminal device corresponding to the first identification information has failed in random access.
  • sending the third message to the network device can avoid the waste of resources caused by the network device sending the second message to the terminal device here.
  • Sending the fourth message to the network device can enable the network device to resend the second message in time without waiting for a preset duration, thereby effectively reducing the delay of random access.
  • the first message further includes a sequence number of the preamble sequence, so that when the preamble and OCC have no mapping relationship, and the network device does not receive the preamble in the first message, the network device may use the sequence number of the preamble Instruct the terminal device to repeat the preamble.
  • the first message further includes a sequence number of the preamble sequence and a sequence number of a frequency domain resource used to send the preamble sequence.
  • the network device can generate an RA-RNTI according to the received first identification information and the sequence number of the frequency domain resource of the preamble sequence.
  • the terminal device corresponding to the sequence number of the preamble sequence is instructed to repeat the preamble on the PDCCH scrambled by the RA-RNTI, thereby ensuring the repetition of the preamble.
  • sequence number of the preamble sequence and the first identification information are sent on the same time-frequency resource; or, the sequence number of the preamble sequence, the first identification information, and a frequency used to send the preamble sequence
  • the sequence numbers of the domain resources are sent on the same time-frequency resource.
  • the resources occupied by the first message can be reduced.
  • the first message further includes optimal downlink transmission beam information of the network device.
  • the efficiency of sending the second message can be improved.
  • the second message further includes configuration information of a physical uplink control channel PUCCH for sending the third message or for sending the fourth message. So that the terminal device sends the third message or the fourth message on the resource indicated by the PUCCH configuration information according to the PUCCH configuration information in the second message, it can prevent congestion when multiple terminal devices send the third message or the fourth message simultaneously.
  • PUCCH physical uplink control channel
  • the first identification information is a globally unique network identifier S-TMSI of the terminal device, which can reduce the collision probability of different terminal devices.
  • the first identification information is a cell radio network temporary identification C-RNTI of the terminal device.
  • the sending a first message to a network device includes: A plurality of symbol positions in the time-frequency resource of the message are heard first and then LBT, and the first message is sent at the symbol position where the first LBT succeeds.
  • the success rate of sending the first message can be improved.
  • the receiving the second message sent by the network device includes: after receiving the RA-RNTI scrambled physical downlink control channel PDCCH sent by the network device, receiving the PDCCH according to the PDCCH.
  • the second message sent by the network device implements accurate reception of the second message.
  • the sending a first message to a network device includes: randomly selecting an OCC from a plurality of OCCs selectable by the terminal device, and using the selected OCC to scramble the first identification information; Sending a first message carrying the scrambled first identification information to the network device on the time-frequency resource used for random access.
  • using the randomly selected OCC to scramble the first identification information can increase the possibility of different first identification information of different terminal devices, thereby reducing the collision probability of the terminal devices.
  • the second message further includes a timing advance TA, which can improve accuracy of uplink synchronization.
  • TA timing advance
  • the present application provides a random access method, including: receiving a first message sent by a terminal device, where the first message includes first identification information scrambled by using an orthogonal coverage code OCC, and the first The message is used for the terminal device corresponding to the first identification information to request random access to the network device; according to the first message, a second message is sent to the terminal device, and the second message includes a random access The identification information of the one or more terminal devices that have been successfully loaded, and the identification information of the one or more terminal devices includes the first identification information.
  • This application proposes a two-step random access method, which simplifies the process of random access, reduces the access delay of random access, and reduces signaling overhead.
  • the orthogonal identification code OCC is used to scramble the first identification information of the terminal device, which can increase the possibility of different first identification information of different terminal devices, thereby reducing the collision probability of different terminal devices during the random access process. Improved the capacity of the random access channel.
  • the first message further includes a preamble sequence
  • sending a second message to the terminal device according to the first message includes: generating a time advance TA based on the preamble sequence; and sending the TA message to the terminal device.
  • mapping relationship between the preamble sequence and the OCC there is a mapping relationship between a frequency domain resource used to send the preamble sequence and a frequency domain resource used to send the first identification information.
  • the network device it is convenient for the network device to detect the first message, and when one of them is detected, the other can be obtained, thereby reducing the complexity of blindly detecting the first message by the network device and improving the efficiency of the network device receiving the first message.
  • a frequency domain resource used to send the preamble sequence is the same as a frequency domain resource used to send the first identification information, or a frequency domain resource used to send the preamble sequence and used to send the first There is a preset offset between the frequency domain resources of the identification information.
  • the receiving the first message sent by the terminal device includes: blindly detecting time-frequency resources for random access, and detecting the preamble sequence Receiving the first identification information scrambled by the OCC according to the mapping relationship between the preamble sequence and the OCC.
  • the network device it is convenient for the network device to detect the first message, that is, when one of them is detected, the other can be obtained, thereby reducing the complexity of blindly detecting the first message by the network device and improving the efficiency of the network device receiving the first message.
  • the receiving a first message sent by the terminal device includes: Blind detection of time-frequency resources used for random access, detecting frequency-domain resources used to send the preamble sequence; according to the frequency-domain resources used to send the preamble sequence and used to send the first identification information
  • a network device when a network device detects one, it can learn the position of the other frequency domain resource and receive it at the position of the frequency domain resource, thereby reducing the complexity of blindly detecting the first message by the network device and improving the network device. Efficiency of receiving the first message.
  • the method further includes: determining a random access wireless network temporary identity RA-RNTI of the terminal device according to the OCC scrambled the first identification information, and using the RA-RNTI to scramble a physical downlink control channel And sending the second message to the terminal device on the time-frequency resource pointed by the scrambled PDCCH. Can reduce the collision probability of RA-RNTI.
  • the determining the random access wireless network temporary identity RA-RNTI of the terminal device based on the OCC that scrambles the first identification information includes: according to the OCC that scrambles the first identification information and for sending
  • the RA-RNTI is determined by a sequence number of a frequency domain resource of the first message, a sequence number of a time domain resource used to send the first message, and / or a total number of OCCs selectable by the terminal device.
  • the possibility of different RA-RNTIs determined by different terminal devices according to different OCCs can be further increased, thereby reducing the collision probability of RA-RNTI.
  • the sequence number of the frequency domain resource used to send the first message is used for sending The sequence number of the frequency domain resource of the first message.
  • the method further includes: receiving a third message sent by the terminal device, where the third message is used to indicate all The terminal device corresponding to the first identification information is successfully accessed randomly; or, receiving a fourth message sent by the terminal device and retransmitting the second message according to the fourth message, wherein the fourth message is used Indicating that the terminal device corresponding to the first identification information has failed in random access.
  • sending the third message to the network device can avoid the waste of resources caused by the network device sending the second message to the terminal device here.
  • Sending the fourth message to the network device can enable the network device to resend the second message in time without waiting for a preset duration, thereby effectively reducing the delay of random access.
  • the first message further includes a sequence number of the preamble sequence, so that when the preamble and OCC have no mapping relationship, and the network device does not receive the preamble in the first message, the network device may use the sequence number of the preamble Instruct the terminal device to repeat the preamble.
  • the first message further includes a sequence number of the preamble sequence and a sequence number of a frequency domain resource used to send the preamble sequence.
  • the network device can generate an RA-RNTI according to the received first identification information and the sequence number of the frequency domain resource of the preamble sequence.
  • the terminal device corresponding to the sequence number of the preamble sequence is instructed to repeat the preamble on the PDCCH scrambled by the RA-RNTI, thereby ensuring the repetition of the preamble.
  • sequence number of the preamble sequence and the first identification information are sent on the same time-frequency resource; or, the sequence number of the preamble sequence, the first identification information, and a frequency used to send the preamble sequence
  • the sequence numbers of the domain resources are sent on the same time-frequency resource.
  • the resources occupied by the first message can be reduced.
  • the first message further includes optimal downlink transmission beam information of the network device.
  • the efficiency of sending the second message can be improved.
  • the second message further includes configuration information of a physical uplink control channel PUCCH for sending the third message or for sending the fourth message. So that the terminal device sends the third message or the fourth message on the resource indicated by the PUCCH configuration information according to the PUCCH configuration information in the second message, it can prevent congestion when multiple terminal devices send the third message or the fourth message at the same time.
  • PUCCH physical uplink control channel
  • the first identification information is a globally unique network identifier S-TMSI of the terminal device, which can reduce the collision probability of different terminal devices.
  • the first identification information is a cell radio network temporary identification C-RNTI of the terminal device.
  • the present application provides a random access device, including:
  • a sending module configured to send a first message to a network device, where the first message includes first identification information scrambled by using an orthogonal cover code OCC, and the first message is used for a terminal corresponding to the first identification information
  • the device requests random access to the network device;
  • a receiving module configured to receive a second message sent by the network device, where the second message includes identification information of one or more terminal devices whose random access is successful;
  • a processing module is configured to determine whether the random access is successful according to whether the identification information of the one or more terminal devices includes the first identification information.
  • the first message further includes a preamble sequence
  • the second message further includes a timing advance TA generated by the network device according to the preamble sequence.
  • mapping relationship between the preamble sequence and the OCC there is a mapping relationship between a frequency domain resource used to send the preamble sequence and a frequency domain resource used to send the first identification information.
  • a frequency domain resource used to send the preamble sequence is the same as a frequency domain resource used to send the first identification information, or a frequency domain resource used to send the preamble sequence and used to send the first There is a preset offset between the frequency domain resources of the identification information.
  • the apparatus further includes: an RA-RNTI determination module, configured to determine a random access wireless network temporary identity RA-RNTI of the terminal device according to an OCC that scrambles the first identification information.
  • an RA-RNTI determination module configured to determine a random access wireless network temporary identity RA-RNTI of the terminal device according to an OCC that scrambles the first identification information.
  • the RA-RNTI determining module is specifically configured to scramble the first identification information according to an OCC and a sequence number of a frequency domain resource for sending the first message, and for sending the first
  • the RA-RNTI is determined by a sequence number of a time domain resource of the message and / or a total number of OCCs selectable by the terminal device.
  • the sequence number of the frequency domain resource used to send the first message is used for sending The sequence number of the frequency domain resource of the first message.
  • the sending module is further configured to: if the identification information of the one or more terminal devices includes the first identification information, send a third message to the network device, where the third message is For indicating that the terminal device corresponding to the first identification information succeeds in random access; if the identification information of the one or more terminal devices does not include the first identification information or the decoding of the second message fails, the Sending, by the network device, a fourth message, so that the network device resends the second message to the terminal device according to the fourth message, where the fourth message is used to indicate that the first identification information corresponds to The terminal device random access failed.
  • the first message further includes a sequence number of the preamble sequence; or, the first message further includes a sequence number of the preamble sequence and a sequence number of a frequency domain resource for transmitting the preamble sequence.
  • sequence number of the preamble sequence and the first identification information are sent on the same time-frequency resource;
  • the sequence number of the preamble sequence, the first identification information, and the sequence number of a frequency domain resource used to send the preamble sequence are all sent on the same time-frequency resource.
  • the first message further includes optimal downlink transmission beam information of the network device.
  • the second message further includes configuration information of a physical uplink control channel PUCCH for sending the third message or for sending the fourth message.
  • the first identification information is a globally unique network identification S-TMSI of the terminal device.
  • the first identification information is a cell radio network temporary identification C-RNTI of the terminal device.
  • the sending module is further configured to: if the time-frequency resource allowed to send the first message is greater than the time-frequency resource occupied by the first message, the time-frequency resource allowed to send the first message is The plurality of symbol positions within the first listen first and then speak LBT, and send the first message at the symbol position where the first LBT succeeded.
  • the receiving module is specifically configured to, after receiving the RA-RNTI scrambled physical downlink control channel PDCCH sent by the network device, receive the first PDCCH sent by the network device according to the PDCCH. Two messages.
  • the processing module is further configured to randomly select an OCC from a plurality of OCCs selectable by the terminal device, and use the selected OCC to scramble the first identification information;
  • the sending module is configured to send a first message carrying the scrambled first identification information to the network device on a randomly selected time-frequency resource for random access.
  • the present application provides a random access device, including:
  • a receiving module configured to receive a first message sent by a terminal device, where the first message includes first identification information scrambled by using an orthogonal cover code OCC, and the first message is used for the first identification information corresponding to the first identification information
  • the terminal device requests random access to the network device;
  • a sending module configured to send a second message to the terminal device according to the first message, where the second message includes identification information of one or more terminal devices that are successfully accessed randomly, and the one or more The identification information of the terminal device includes the first identification information.
  • the first message further includes a preamble sequence
  • the device further includes:
  • a TA generation module configured to generate a timing advance TA according to the preamble sequence
  • the sending module is further configured to send a second message to the terminal device, where the second message includes the TA.
  • mapping relationship between the preamble sequence and the OCC there is a mapping relationship between a frequency domain resource used to send the preamble sequence and a frequency domain resource used to send the first identification information.
  • a frequency domain resource used to send the preamble sequence is the same as a frequency domain resource used to send the first identification information, or a frequency domain resource used to send the preamble sequence and used to send the first There is a preset offset between the frequency domain resources of the identification information.
  • the receiving module is specifically configured to blindly detect time-frequency resources for random access, detect the preamble sequence, and detect the preamble sequence according to the preamble sequence. And a mapping relationship between the OCC and the first identification information scrambled by the OCC.
  • the receiving module is specifically used for blind detection for random access Time-frequency resources, a frequency-domain resource for sending the preamble sequence is detected, and between the frequency-domain resource for sending the preamble sequence and the frequency-domain resource for sending the first identification information To obtain the frequency domain resource for sending the first identification information, and receive the first identification information on the frequency domain resource for sending the first identification information.
  • the apparatus further includes: an RA-RNTI determination module, configured to determine a random access wireless network temporary identity RA-RNTI of the terminal device according to an OCC that scrambles the first identification information;
  • a scrambling module configured to scramble a physical downlink control channel PDCCH using the RA-RNTI
  • the sending module is specifically configured to send the second message to the terminal device on the time-frequency resource pointed by the PDCCH after scrambling.
  • the RA-RNTI determining module is specifically configured to scramble the first identification information according to an OCC and a sequence number of a frequency domain resource for sending the first message, and for sending the first
  • the RA-RNTI is determined by a sequence number of a time domain resource of the message and / or a total number of OCCs selectable by the terminal device.
  • the sequence number of the frequency domain resource used to send the first message is used for sending The sequence number of the frequency domain resource of the first message.
  • the receiving module is further configured to receive a third message sent by the terminal device, where the third message is used to indicate that the terminal device corresponding to the first identification information succeeds in random access; or Receiving a fourth message sent by the terminal device, where the fourth message is used to indicate that a random access failure of the terminal device corresponding to the first identification information fails;
  • the sending module is further configured to resend the second message to the terminal device according to the fourth message.
  • the first message further includes a sequence number of the preamble sequence; or, the first message further includes a sequence number of the preamble sequence and a sequence number of a frequency domain resource for transmitting the preamble sequence.
  • sequence number of the preamble sequence and the first identification information are sent on the same time-frequency resource;
  • the sequence number of the preamble sequence, the first identification information, and the sequence number of a frequency domain resource used to send the preamble sequence are all sent on the same time-frequency resource.
  • the first message further includes optimal downlink transmission beam information of the network device.
  • the second message further includes configuration information of a physical uplink control channel PUCCH for sending the third message or for sending the fourth message.
  • the first identification information is a globally unique network identification S-TMSI of the terminal device.
  • the first identification information is a cell radio network temporary identification C-RNTI of the terminal device.
  • the present application provides a random access device, including:
  • a sender configured to send a first message to a network device, where the first message includes first identification information scrambled by using an orthogonal cover code OCC, and the first message is used for a terminal corresponding to the first identification information
  • the device requests random access to the network device;
  • a receiver configured to receive a second message sent by the network device, where the second message includes identification information of one or more terminal devices that succeed in random access;
  • a processor configured to determine whether the random access is successful according to whether the identification information of the one or more terminal devices includes the first identification information.
  • the first message further includes a preamble sequence
  • the second message further includes a timing advance TA generated by the network device according to the preamble sequence.
  • mapping relationship between the preamble sequence and the OCC there is a mapping relationship between a frequency domain resource used to send the preamble sequence and a frequency domain resource used to send the first identification information.
  • a frequency domain resource used to send the preamble sequence is the same as a frequency domain resource used to send the first identification information, or a frequency domain resource used to send the preamble sequence and used to send the first There is a preset offset between the frequency domain resources of the identification information.
  • the processor is further configured to determine a random access wireless network temporary identity RA-RNTI of the terminal device according to an OCC that scrambles the first identification information.
  • the processor is specifically configured to scramble the first identification information according to an OCC and a sequence number of a frequency domain resource for sending the first message, and a time for sending the first message.
  • the sequence number of the domain resource and / or the total number of OCCs selectable by the terminal device determine the RA-RNTI.
  • the sequence number of the frequency domain resource used to send the first message is used for sending The sequence number of the frequency domain resource of the first message.
  • the transmitter is further configured to: if the identification information of the one or more terminal devices includes the first identification information, send a third message to the network device, where the third message is For indicating that the terminal device corresponding to the first identification information succeeds in random access; if the identification information of the one or more terminal devices does not include the first identification information or the decoding of the second message fails, the Sending, by the network device, a fourth message, so that the network device resends the second message to the terminal device according to the fourth message, where the fourth message is used to indicate that the first identification information corresponds to The terminal device random access failed.
  • the first message further includes a sequence number of the preamble sequence; or, the first message further includes a sequence number of the preamble sequence and a sequence number of a frequency domain resource for transmitting the preamble sequence.
  • sequence number of the preamble sequence and the first identification information are sent on the same time-frequency resource;
  • the sequence number of the preamble sequence, the first identification information, and the sequence number of a frequency domain resource used to send the preamble sequence are all sent on the same time-frequency resource.
  • the first message further includes optimal downlink transmission beam information of the network device.
  • the second message further includes configuration information of a physical uplink control channel PUCCH for sending the third message or for sending the fourth message.
  • the first identification information is a globally unique network identification S-TMSI of the terminal device.
  • the first identification information is a cell radio network temporary identification C-RNTI of the terminal device.
  • the transmitter is further configured to: if the time-frequency resource allowed to send the first message is greater than the time-frequency resource occupied by the first message, the time-frequency resource allowed to send the first message is The plurality of symbol positions within the first listen first and then speak LBT, and send the first message at the symbol position where the first LBT succeeded.
  • the receiver is specifically configured to, after receiving the RA-RNTI scrambled physical downlink control channel PDCCH sent by the network device, receive the first PDCCH sent by the network device according to the PDCCH. Two messages.
  • the processor is configured to randomly select an OCC from a plurality of OCCs selectable by the terminal device, and use the selected OCC to scramble the first identification information;
  • the transmitter is configured to send a first message carrying the scrambled first identification information to the network device on a randomly selected time-frequency resource for random access.
  • the present application provides a random access device, including:
  • a receiver configured to receive a first message sent by a terminal device, where the first message includes first identification information that is scrambled with an orthogonal cover code OCC, and the first message is used for the first identification information corresponding to the first identification information
  • the terminal device requests random access to the network device;
  • a sender configured to send a second message to the terminal device according to the first message, where the second message includes identification information of one or more terminal devices that have succeeded in random access, and the one or more The identification information of the terminal device includes the first identification information.
  • the first message further includes a preamble sequence
  • the device further includes a processor
  • the processor is configured to generate a timing advance TA according to the preamble sequence
  • the transmitter is further configured to send a second message to the terminal device, where the second message includes the TA.
  • mapping relationship between the preamble sequence and the OCC there is a mapping relationship between a frequency domain resource used to send the preamble sequence and a frequency domain resource used to send the first identification information.
  • a frequency domain resource used to send the preamble sequence is the same as a frequency domain resource used to send the first identification information, or a frequency domain resource used to send the preamble sequence and used to send the first There is a preset offset between the frequency domain resources of the identification information.
  • the receiver is specifically configured to blindly detect time-frequency resources used for random access, detect the preamble sequence, and detect the preamble sequence according to the preamble sequence. And a mapping relationship between the OCC and the first identification information scrambled by the OCC.
  • the receiver is specifically used for blind detection for random access Time-frequency resources, a frequency-domain resource for sending the preamble sequence is detected, and between the frequency-domain resource for sending the preamble sequence and the frequency-domain resource for sending the first identification information To obtain the frequency domain resource for sending the first identification information, and receive the first identification information on the frequency domain resource for sending the first identification information.
  • the processor is further configured to determine a random access wireless network temporary identity RA-RNTI of the terminal device according to the OCC that scrambles the first identification information, and use the RA-RNTI to scramble the physical Downlink control channel PDCCH;
  • the transmitter is specifically configured to send the second message to the terminal device on the time-frequency resource pointed by the PDCCH after scrambling.
  • the processor is specifically configured to scramble the first identification information according to an OCC and a sequence number of a frequency domain resource for sending the first message, and a time for sending the first message.
  • the sequence number of the domain resource and / or the total number of OCCs selectable by the terminal device determine the RA-RNTI.
  • the sequence number of the frequency domain resource used to send the first message is used for sending The sequence number of the frequency domain resource of the first message.
  • the receiver is further configured to receive a third message sent by the terminal device, where the third message is used to indicate that the terminal device corresponding to the first identification information succeeds in random access; or Receiving a fourth message sent by the terminal device, where the fourth message is used to indicate that a random access failure of the terminal device corresponding to the first identification information fails;
  • the transmitter is further configured to resend the second message to the terminal device according to the fourth message.
  • the first message further includes a sequence number of the preamble sequence; or, the first message further includes a sequence number of the preamble sequence and a sequence number of a frequency domain resource for transmitting the preamble sequence.
  • sequence number of the preamble sequence and the first identification information are sent on the same time-frequency resource;
  • the sequence number of the preamble sequence, the first identification information, and the sequence number of a frequency domain resource used to send the preamble sequence are all sent on the same time-frequency resource.
  • the first message further includes optimal downlink transmission beam information of the network device.
  • the second message further includes configuration information of a physical uplink control channel PUCCH for sending the third message or for sending the fourth message.
  • the first identification information is a globally unique network identification S-TMSI of the terminal device.
  • the first identification information is a cell radio network temporary identification C-RNTI of the terminal device.
  • a random access device includes:
  • a processor configured to execute the computer program to implement the random access method according to the first aspect or the second aspect.
  • the present application provides a computer storage medium including computer instructions, and when the instructions are executed by a computer, the computer is implemented as described in any one of the first aspect or the second aspect Random access method.
  • the present application provides a computer program product, the program product including a computer program stored in a readable storage medium, and at least one processor of the communication device may be read from the readable storage medium The computer program and the at least one processor execute the computer program to cause a communication device to implement the random access method according to any one of the first aspect or the second aspect.
  • the terminal device uses OCC to scramble the first identification information of the terminal device, and sends a first message to the network device, where the first message includes the scrambled first Identification information, after receiving the first message sent by the terminal device, the network device sends a second message to the terminal device according to the first message, where the second message includes the identification information of one or more terminal devices with successful random access, In this way, the terminal device can determine whether the random access of the terminal device succeeds or fails according to whether the one or more terminal devices include the first identification information of the terminal device.
  • the method implements two-step random access by including the first identification information of the terminal device in the first message, thereby simplifying the random access process, reducing the access delay of the random access, and reducing the signaling overhead.
  • OCC is used to scramble the first identification information of the terminal device, which can increase the possibility of different first identification information of different terminal devices, thereby reducing the collision probability of different terminal devices during the random access process, and improving random access.
  • the capacity of the channel is used to scramble the first identification information of the terminal device, which can increase the possibility of different first identification information of different terminal devices, thereby reducing the collision probability of different terminal devices during the random access process, and improving random access.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a flowchart of a random access method provided in Embodiment 1 of this application;
  • Embodiment 3 is an interaction flowchart of a random access method provided in Embodiment 2 of the present application.
  • FIG. 4 is a schematic diagram of resource allocation for sending a first message according to Embodiment 2 of the present application.
  • FIG. 6 is a flowchart of a random access method provided in Embodiment 3 of the present application.
  • FIG. 7 is a schematic diagram of resource allocation for sending a first message according to Embodiment 3 of the present application.
  • FIG. 8 is a schematic structural diagram of a random access device according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a random access device according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a random access device according to an embodiment of the present application.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application. As shown in FIG. 1, the communication system includes a network device and a terminal device.
  • a network device is a device in a wireless network, such as a radio access network (RAN) node that connects a terminal to the wireless network.
  • RAN nodes are: gNB, transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), and node B (Node B, NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home NodeB, or home NodeB, HNB), baseband unit , BBU), or wireless fidelity (Wifi) access point (access point, AP), etc.
  • the network device may include a centralized unit (CU) node, a distributed unit (DU) node, or a RAN device including a CU node and a DU node, which is not limited herein.
  • Terminal device It can be a wireless terminal device or a wired terminal device.
  • a wireless terminal device can refer to a device with wireless transmitting and receiving functions. It can be deployed on land, including indoor or outdoor, handheld or vehicle; it can also be deployed on the water. (Such as ships, etc.); can also be deployed in the air (such as aircraft, balloons, satellites, etc.).
  • the terminal device may be a mobile phone, a tablet computer, a computer with a wireless transmitting and receiving function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, or an industrial control device.
  • VR virtual reality
  • AR augmented reality
  • the terminal device may also be referred to as a user equipment (UE).
  • UE user equipment
  • GSM Global System for Mobile Communications
  • CDMA code division multiple access
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency-Division Multiple Access
  • SC-FDMA single-carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long-Term Evolution Evolution
  • terminal equipment needs to randomly access network equipment:
  • Scenario 1 An initial radio resource control (Radio Resource Control, RRC) connection is established.
  • RRC Radio Resource Control
  • Scenario 2 RRC connection re-establishment.
  • the radio link fails and the UE needs to re-establish the RRC connection, the UE will initiate random access.
  • Scenario 3 When the UE performs a handover, the UE initiates random access in the target cell.
  • Scenario 4 Downlink data arrives.
  • the network device needs to transmit downlink data to the UE, but finds that the UE is out of sync. (The network device maintains an uplink timer. If the uplink timer expires, the network device does not receive data. To the UE's sounding reference signal, the network device considers that the UE is out of step), and the network device will control the UE to initiate random access.
  • Scenario 5 Uplink data arrives. When the UE is in the connected state, the UE needs to transmit uplink data to the network device, but finds that it is in an out-of-sync state. If the network device adjusts the TA command, the UE considers that its uplink is out of sync), and the UE will initiate random access.
  • Random access includes contention-based random access and non-contention-based random access.
  • the random access method proposed in this embodiment is directed to a contention-based random access process.
  • the existing contention-based random access process includes 4 steps: the terminal device sends a preamble (that is, Msg1) to the network device, and the network device sends a random access response (Random Access Response (RAR)) to the terminal device according to the received preamble. (Ie, Msg2), then the terminal device and the network device perform the first uplink scheduling transmission (ie, Msg3), and finally the network device feeds back to the terminal device a contention resolution (ie, Msg4). That is, the existing contention-based random access process is complicated, the access time is long, there is an access delay, and the signaling overhead is large.
  • a preamble that is, Msg1
  • RAR Random Access Response
  • an embodiment of the present application proposes a two-step random access method, which simplifies the procedure of random access, reduces the access delay of random access, and reduces signaling overhead.
  • the Orthogonal Cover Code (OCC) is used to scramble the first identification information of the terminal device, which can increase the possibility of different first identification information of different terminal devices, thereby reducing the difference in the random access process.
  • the collision probability of the terminal equipment increases the capacity of the random access channel.
  • FIG. 2 is a flowchart of a random access method provided in Embodiment 1 of the present application. As shown in FIG. 2, the two-step random access process in this embodiment includes:
  • a terminal device sends a first message to a network device, where the first message includes first identification information scrambled by using an orthogonal coverage code OCC, and the first message is used for a terminal device corresponding to the first identification information. Requesting random access to the network device.
  • the terminal device when the terminal device initiates a random access request to the network device, that is, sends a first message to the network device, the first identification information of the terminal device is directly carried in the first message.
  • the existing random access process requires the terminal device to send a preamble to the network device and the network device to configure the temporary network identification to the terminal device before the terminal device sends the first carrying the terminal device to the network device.
  • An msg3 of identification information It can be known from this step that, by directly carrying the first identification information of the terminal device in the first message, the step of random access can be reduced, thereby saving signaling overhead.
  • the first identification information of the terminal device may be a unique identification of the terminal device or a temporary identification of the terminal device.
  • the first identification information of the terminal device may be a globally unique network identifier (SAE-Temporary Mobile Subscriber Identit, S-TMSI) of the terminal device.
  • SAE-Temporary Mobile Subscriber Identit S-TMSI
  • the first identification information of the terminal device may be a network temporary identification of the terminal device.
  • the first identification information may be a cell radio network temporary identifier (C-RNTI) of the terminal device, and the C-RNTI is It is determined when the terminal equipment is synchronized with the network equipment in the downlink.
  • C-RNTI cell radio network temporary identifier
  • the orthogonal identification code OCC is used to scramble the first identification information, so that the scrambled first identification information is orthogonal, thereby improving the interference resistance of the first identification information during transmission.
  • different terminal devices in this embodiment may select different OCCs to scramble their first identification information, so that the possibility of different scrambled first identification information can be increased, thereby reducing different terminals during random access.
  • the collision probability of the device may be selected from different terminal devices in this embodiment.
  • the first identification information 1 of the terminal device 1 and the first identification information 2 of the terminal device 2 are the same, but the OCC selected by the terminal device 1 and the terminal device 2 are different, so that the first identifications scrambled by different OCCs Information 1 is different from the first identification information 2.
  • the network device can accurately distinguish the first identification information 1 and the first identification information 2 carried in the first message. It is divided into two different terminal devices to initiate a random access request, which can further allocate uplink access resources to terminal devices 1 and 2 respectively, thereby improving the success rate of random access of terminal devices with the same first identification information. And increase the capacity of the random access channel.
  • a terminal device may have multiple OCCs to choose from. If the OCC used to scramble the first identification information is configured by the network device, for example, the network device is configured in the remaining minimum system information (RMSI) or other system information (OSI), the terminal device The first identification information is scrambled using the OCC specified by the network device.
  • RMSI remaining minimum system information
  • OSI system information
  • the above S201 may include S201a and S201b:
  • the terminal device randomly selects one OCC from a plurality of OCCs selectable by the terminal device, and uses the selected OCC to scramble the first identification information.
  • the number and length of OCCs corresponding to the terminal equipment may be given by standards, or the network equipment may be configured in RMSI or OSI.
  • the number of OCCs used to scramble the first identification information may be determined by the number of symbols required to send the first identification information. For example, if two symbols are required to send the first identification information, it is used to scramble the The number of OCCs of the first identification information is also two.
  • the two OCCs can be [+ 1, + 1] and [+ 1, -1], or [+ 1, + 1] and [-1, + 1], or [-1 , -1] and [-1, +1], or [-1, -1] and [+1, -1].
  • the two OCCs may be orthogonal codes of other lengths.
  • the terminal device may randomly select one of the above-mentioned multiple OCCs to scramble the first identification information of the terminal device.
  • the terminal device 1 selects OCC [+1, -1] to scramble its own first Identification information.
  • the terminal device 2 selects OCC [+ 1, + 1] to scramble its first identification information.
  • each scrambled first identification information is orthogonal.
  • the first identification information carried in each first message is orthogonal, which can improve each first message. Interference immunity.
  • the probability of collision when multiple terminal devices send the first message can be reduced, and the capacity of the random access channel can be increased.
  • the terminal device sends a first message carrying the scrambled first identification information to the network device on a randomly selected time-frequency resource for random access.
  • the terminal device After the terminal device scrambles the first identification information according to the method in S201a, the terminal device randomly selects a time slot (immediate domain resource) and frequency domain resource that can be used for random access, and the time slot and frequency domain resource will carry
  • the first message of the scrambled first identification information is sent to the network device to implement the sending of the first message.
  • the network device sends a second message to the terminal device according to the first message, where the second message includes identification information of one or more terminal devices that succeed in random access, and the one or more terminals
  • the identification information of the device includes the first identification information.
  • the network device when multiple terminal devices send random access requests to the network device, the network device receives the first message sent by the multiple terminal devices at the same time. When the network device receives the first message sent by one or more terminal devices, it indicates that the random access of these one or more terminal devices is successful. The network device parses the first message sent by one or more terminal devices, and descrambles the first identification information scrambled by OCC in the one or more first messages. Then, an uplink access resource is allocated to the terminal device corresponding to each of the descrambled first identification information. Carrying the allocated uplink resources and the descrambled first identification information in a second message and sending them to the terminal device.
  • the second message in this embodiment includes identification information of one or more terminal devices that succeed in random access.
  • the terminal device that sends the first message receives the second message sent by the network device, and determines whether the random access is successful according to whether the identification information of the one or more terminal devices includes the first identification information.
  • the terminal device After the terminal device sends the first message, it monitors the second message sent by the network device within a certain time window.
  • the terminal device receives the second message sent by the network device, it parses the second message to determine whether the identification information of the one or more terminal devices carried in the second message includes its own first identification information, and if it includes, The random access is successful. If the first identification information of the terminal device is not included in the second message, it is determined that the random access fails this time.
  • the terminal device sending the first message does not receive the second message sent by the network device within a preset time
  • the terminal device determines that the random access has failed, and the terminal device can adjust the uplink transmission power, and Send the first message to the network device again using the adjusted uplink transmission power.
  • the identification information of the terminal device that has succeeded in random access is directly carried in the second message, so that the terminal device can determine whether the random access succeeds or fails according to whether the second message includes its own first identification information.
  • the access process is simple and can be completed in two steps. For Machine Type Communication (MTC) or Ultra Reliable Low Latency Communication (URLLC) scenarios, it can effectively reduce latency and save signaling overhead.
  • MTC Machine Type Communication
  • URLLC Ultra Reliable Low Latency Communication
  • the terminal device uses OCC to scramble the first identification information of the terminal device and sends a first message to the network device.
  • the first message includes the scrambled first identification information
  • the network device receives
  • a second message is sent to the terminal device according to the first message, and the second message includes identification information of one or more terminal devices that have succeeded in random access.
  • the terminal device may determine whether the random access of the terminal device succeeds or fails according to whether the one or more terminal devices include the first identification information of the terminal device.
  • this embodiment implements two-step random access by including the first identification information of the terminal device in the first message, thereby simplifying the random access process, reducing the access delay of random access, and reducing signaling overhead.
  • OCC is used to scramble the first identification information of the terminal device, which can increase the possibility of different first identification information of different terminal devices, thereby reducing the collision probability of different terminal devices during the random access process, and improving random access.
  • the capacity of the channel is used to scramble the first identification information of the terminal device.
  • the method in this embodiment further includes:
  • the terminal device sends a third message to the network device, where the third message is used to indicate the first identification information.
  • the corresponding terminal device successfully accessed randomly.
  • S204b The network device receives a third message sent by the terminal device that sends the first message.
  • the method in this embodiment further includes:
  • the identification information of the one or more terminal devices does not include the first identification information of the terminal device that sends the first message, or the terminal device that sends the first message fails to decode the second message, send the first
  • the terminal device of the message sends a fourth message to the network device, so that the network device retransmits the second message according to the fourth message, where the fourth message is used to indicate that the first identification information corresponds to The terminal device (ie, the terminal device that sends the first message) fails in random access.
  • S204d The network device receives a fourth message sent by the terminal device that sends the first message, and retransmits the second message according to the fourth message.
  • the network device may resend the above message to the terminal device.
  • the network device sends a second message to the terminal device after a preset period of time, which will cause a waste of random access resources. If the random access of the terminal device fails, the terminal device needs to wait for a preset time before receiving the second message resent by the network device, which will cause a random access delay.
  • the terminal device in this embodiment sends a response message to the network device in time after receiving the second message sent by the network device, so as to reduce the delay of random access and prevent the waste of random access resources.
  • the terminal device that sends the first message parses the second message to determine whether the identification information of the one or more terminal devices that have been randomly accessed successfully in the second message includes Including the first identification information of the terminal device.
  • the terminal device sends a third message to the network device (such as a Hybrid Automatic Repeat Request Confirmation Message (Hybrid Automatic Repeat Request) Acknowledgement (HARQACK)), the third message is used to indicate that the terminal device corresponding to the first identification information succeeds in random access.
  • the network device After the network device receives the third message, it stops sending the second message to the terminal device that sent the first message, which can prevent the waste of random access resources.
  • the terminal device may send a fourth message (such as a Hybrid Automatic Repeat Request Acknowledgement (HARQ) NACK) to the network device, so that the network device resends the second message to the terminal device.
  • a fourth message such as a Hybrid Automatic Repeat Request Acknowledgement (HARQ) NACK
  • the terminal device sends a fourth message to the network device.
  • the four messages are used to indicate that the terminal device corresponding to the first identification information has failed in random access.
  • the network device After receiving the fourth message, the network device resends the second message to the terminal device. This can not only solve the problem caused by the failure of sending the second message.
  • the terminal device actively sends a fourth message to the network device, so that the network device retransmits the second message in time without waiting for a preset duration, thereby effectively reducing the delay of random access.
  • the network device sends the preset message (for example, 3 times) to the terminal device a second message
  • the identification information of the one or more terminal devices included in the second message still does not include this information.
  • the first identification information of the terminal device determines that the random access of the terminal device fails.
  • the network device after the network device receives the fourth message sent by the terminal device, as described above, the network device resends the second message to the terminal device.
  • the network device if the network device receives the fourth message sent by the terminal device and the third message sent by other terminal devices, it indicates that the terminal device sending the third message has successfully accessed, that is, the sending process of the second message is normal. However, a conflict occurs. In order to prevent the waste of random access resources, the network device does not resend the second message to the terminal device.
  • the second message in this embodiment further includes configuration information of a physical uplink control channel (PUCCH) for sending a third message or for sending a fourth message.
  • PUCCH physical uplink control channel
  • the PUCCH configured by the system to send the third message or the fourth message may not be able to carry the third message or Fourth message.
  • the network device in this embodiment adds PUCCH configuration information for sending a third message or a fourth message to the second message, so that the terminal device may configure the PUCCH configuration information according to the PUCCH configuration information in the second message.
  • a third message or a fourth message is sent on the indicated resource to prevent congestion when the third message or the fourth message is sent, and to ensure that the network device can receive the third message or the fourth message of all random access terminal devices.
  • the PUCCH configuration information may include at least one of a time domain position, a frequency domain position, and a cyclic shift value used.
  • FIG. 3 is an interaction flowchart of the random access method provided in Embodiment 2 of the present application. Based on the foregoing embodiment, as shown in FIG. 3, the random access method in this embodiment may include:
  • the terminal device sends a first message to the network device, where the first message includes first identification information that is scrambled by OCC.
  • the network device scrambles the PDCCH by using the RA-RNTI of the terminal device, and sends the second message to the terminal device on the time-frequency resource pointed to by the scrambled PDCCH, where the terminal device ’s
  • the RA-RNTI is determined by using OCC that scrambles the first identification information.
  • the terminal device that sends the first message After receiving the RA-RNTI scrambled PDCCH sent by the network device according to its own RA-RNTI, the terminal device that sends the first message receives the second PDCCH sent by the network device according to the PDCCH. Message.
  • the terminal device sends a first message to the network device, and before receiving the second message, uses the OCC that scrambles the first identification information to determine its own random access wireless network temporary identity Network (Temporary Identifier, RA-RNTI).
  • Temporal Identifier Temporal Identifier
  • the network device performs blind detection of the first message by using all possible OCCs on each frequency domain resource (for example, each interlace) in each time slot for random access.
  • the network device can obtain an OCC for scrambling the first message.
  • the network device determines the RA-RNTI of the terminal device that sends the first message by using the OCC that scrambles the first message.
  • using the RA-RNTI to scramble the physical downlink control channel (PDCCH), and send the first message to the time-frequency resource indicated by the scrambled PDCCH for sending the second message.
  • Terminal device sends a second message.
  • the PDCCH carries an RA-RNTI.
  • the terminal device that sends the first message continuously monitors the PDCCH that is scrambled with the RA-RNTI and sent by the network device within a certain time window according to its RA-RNTI. If the terminal device detects its own RA-RNTI scrambled PDCCH within the time window, it will decode the second message carried on the time-frequency resource indicated by the PDCCH, thereby achieving accurate reception of the second message.
  • the process of determining the RA-RNTI by the terminal device and the network device is the same.
  • the existing random access method uses formula (1) to determine the RA-RNTI of the terminal device:
  • RA-RNTI 1 + t_id + 10 * f_id (1)
  • t_id (0 ⁇ t_id ⁇ 10) is the subframe number of the random access slot
  • f_id (0 ⁇ f_id ⁇ 6) is the frequency domain number of the random access slot.
  • the RA-RNTI of the terminal device in this embodiment is determined by using the OCC that scrambles the first identification information, so that the RA-RNTI changes with different OCCs.
  • the RA-RNTI of the terminal device in this embodiment is determined by using the number of OCCs and / or the number of the OCC used to scramble the first identifier.
  • the total number of OCCs that can be selected by the terminal device (for example, 2) can be used to determine the RA-RNTI of the terminal device.
  • the number of the OCC (for example, 1) used to scramble the first identification information is used to determine the RA-RNTI of the terminal device.
  • the total number of OCCs that can be selected by the terminal device and the number of the OCC used to scramble the first identification information are used to determine the RA-RNTI of the terminal device.
  • the total number of OCCs that can be selected by different terminal devices may be different, and the numbers of OCCs selected by the terminal device from multiple OCCs for scrambling the first identification information may also be different.
  • the possibility of different RA-RNTIs determined by different terminal devices according to different OCCs can be increased, thereby reducing the collision probability of the RA-RNTI.
  • the RA-RNTI of the terminal device may be determined by using an OCC that scrambles the first identification information and a frequency domain resource used to send the first message.
  • the RA-RNTI of the terminal device is determined by using the number of the OCC for scrambling the first identification information and the frequency domain resource for sending the first message.
  • formula (2) where formula (2) is only an example, the implementation manner of this embodiment is not limited to formula (2):
  • RA-RNTI 1 + 10 * (f_id + Idx OCC ) (2)
  • f_id is a sequence number of a frequency domain resource used to send the first message (ie, a subframe number of a random access slot)
  • Idx OCC is a number of an OCC selected by the terminal device to scramble the first identification information.
  • the total number of OCCs selectable by the terminal device and the frequency domain resources used to send the first message are used to determine the RA-RNTI of the terminal device.
  • formula (3) where formula (3) is only an example, the implementation manner of this embodiment is not limited to formula (3):
  • RA-RNTI 1 + 10 * (N OCC * f_id) (3)
  • N OCC is the total number of OCCs that can be selected by the terminal device.
  • determining the RA-RNTI by using the OCC and the frequency domain resources used to send the first message can further reduce the collision probability of the RA-RNTI.
  • the OCC selected by terminal device 1 and terminal device 2 for scrambling the respective first identification information is the same, but the frequency domain resources selected by terminal device 1 and terminal device 2 for sending the first message are different. Therefore, according to the formula (2)
  • the obtained RA-RNTIs of the terminal device 1 and the terminal device 2 are different, and it is possible to prevent the RA-RNTI collision between the two.
  • the terminal device 1 and the terminal device 2 have the same optional OCC, but the frequency domain resources selected by the terminal device 1 and the terminal device 2 for sending the first message are different. Therefore, the terminal device 1 and the terminal device 1 obtained according to formula (3)
  • the RA-RNTI of the terminal device 2 is different, and it is possible to prevent the collision of the RA-RNTI of the two.
  • the RA-RNTI of the terminal device may use an OCC that scrambles the first identification information and a sequence number of a frequency domain resource used to send the first message, and is used to send the first
  • OCC that scrambles the first identification information and a sequence number of a frequency domain resource used to send the first message, and is used to send the first
  • the total number of OCCs that can be selected by the terminal is greater than or equal to the number of symbols included in the time domain resource that sends the first message.
  • a number of an OCC that scrambles the first identification information, a sequence number of a frequency domain resource used to send the first message, and a sequence number of a time domain resource used to send the first message are used.
  • a number of an OCC that scrambles the first identification information, a sequence number of a frequency domain resource used to send the first message, and a sequence number of a time domain resource used to send the first message are used.
  • RA-RNTI 1 + t_id + 10 * (f_id + Idx OCC ) (4)
  • t_id is a sequence number of a time domain resource used to send the first message.
  • the terminal device RA- is determined by using the number of the OCC that scrambles the first identification information, the sequence number of the frequency domain resource used to send the first message, and the total number of OCCs that the terminal device can select.
  • RNTI the number of the OCC that scrambles the first identification information
  • the sequence number of the frequency domain resource used to send the first message and the total number of OCCs that the terminal device can select.
  • RA-RNTI 1 + 10 * (N OCC * f_id + Idx OCC ) (5)
  • the number of the OCC that scrambles the first identification information, the sequence number of the frequency domain resource used to send the first message, the sequence number of the time domain resource used to send the first message, and the terminal device are used.
  • the total number of optional OCCs determines the RA-RNTI.
  • RA-RNTI 1 + t_id + 10 * (N OCC * f_id + Idx OCC ) (6)
  • the probability that the time-frequency resource selected by different terminal devices to send the first message is the same as that of the OCC is greatly reduced.
  • the OCC number and the sequence number of the frequency domain resource used to send the first message and the The sequence number of the time domain resource of a message and / or the total number of optional OCCs of the terminal device determine the RA-RNTI, which can effectively reduce the collision probability of the RA-RNTI.
  • the sequence number of the frequency domain resource used to send the first message is resource interleaved The sequence number of the frequency domain resource used for sending the first message in the allocation.
  • the terminal device uses the resource interlace allocation method for uplink transmission.
  • the resource interlace allocation method for uplink transmission.
  • 106 resource blocks ((Resource Blocks, RBs) are included. Take 100 of these RBs and divide them into 10 parts, each as an interlace.
  • An interlace is distributed by intervals A certain number of RBs on the entire transmission bandwidth are composed of RBs allocated to a terminal device.
  • the RBs are not continuous but have the same or different intervals. In other words, they are allocated to a terminal device.
  • the distribution of each RB may be an evenly spaced or evenly spaced distribution.
  • each interlace contains 10 RBs.
  • the terminal device may use one or more interlace for uplink transmission (and for sending the first message). For example, if the terminal device selects interlace 0 to send the first message, it transmits on RB 0, 10, 20, ..., 90. For example, if the terminal device selects interlace 5 to send the first message, it transmits on RBs 5, 15, 25, ..., 95.
  • Interlace0 which contains RB0, 15, 20, 35, 40, 65, 70, 75, 85, 90.
  • Interlace's RB mapping method can be given by the standard, or it can be flexibly configured by network equipment and indicated in RMSI / OSI or other system information.
  • the frequency domain resource allocation method used to send the first message is the interlace allocation method
  • the sequence number of the frequency domain resource used to send the first message in the above formulas is the selected one for sending the first message.
  • the serial number of the frequency domain resource selected by the terminal device for sending the first message is 5, and the corresponding frequency domain resource of interlace5 is RB 5, 15, 25, ..., 95.
  • the terminal device can The first message is sent on the domain resources RB 5, 15, 25, ..., 95.
  • the frequency band used to transmit the first message is an unlicensed frequency band
  • Listen-Before-Talk (LBT for short) Channel contention access mechanism.
  • the random access method in this embodiment includes two steps, and only two LBTs are required, which reduces the number of LBTs and further reduces the delay of random access.
  • the first message lasts 13 symbols, and is mapped to the last 13 symbols in a 14-symbol slot, and the first 1 symbol is used for LBT.
  • the above S201 may include:
  • the terminal device may try to send the first message at multiple symbol positions to increase the probability of sending the first message, such as The terminal device performs LBT on 1 symbol, and if LBT is successful, sends the first message on 2-14 symbol. If it fails, LBT is performed on 2 symbols, and if LBT is successful, the first message is sent on 3-15 symbols.
  • the terminal device can send the first message on the 13-symbol time-domain resource of the first LBT successfully in the symbols 1-14, 2-15,...., 14-27, which increases the first message. The probability of sending is improved, and the timely sending of the first message is improved.
  • this embodiment may further include S304.
  • the terminal device that sends the first message sends a third message or a fourth message to the network device.
  • the terminal device that sends the first message parses the second message when receiving the second message according to the above steps. If the identification information of the terminal device carried in the second message is consistent with the first identifier of the terminal device, the network device sends the first message to the network device. A third message is sent indicating that the random access was successful.
  • the terminal The device sends a fourth message to the network device, so that the network device sends the second message to the terminal device again.
  • the random access method provided in this embodiment determines the RA-RNTI of the terminal device according to the OCC that scrambles the first identification information. Since the OCC selected by different terminal devices may be different, the RA-RNTI determined according to the OCC is, The possibility of different RA-RNTIs of different terminal devices can be increased, thereby reducing the collision probability of RA-RNTI.
  • FIG. 4 is an interaction flowchart of the random access method provided in Embodiment 3 of the present application. This embodiment relates to the random access in this embodiment when the first signal includes the first identification information and does not include a preamble.
  • the entry process can include:
  • the terminal device sends a first message to the network device, where the first message includes first identification information after OCC scrambling, and does not include Preamble.
  • the network device scrambles the PDCCH by using the RA-RNTI of the terminal device, and sends the second message to the terminal device on the time-frequency resource pointed to by the scrambled PDCCH.
  • the RA-RNTI Determined by using OCC that scrambles the first identification information.
  • the terminal device sending the first message After receiving the RA-RNTI scrambled PDCCH sent by the network device, the terminal device sending the first message receives the second message sent by the network device according to the PDCCH.
  • the terminal device that sends the first message sends a third message or a fourth message to the network device.
  • the duration of the entire Preamble is 2 symbol lengths.
  • PRACH uses a 15KHz subcarrier spacing (SCS)
  • SCS subcarrier spacing
  • the length of the cyclic protection prefix (CP) corresponding to the 15KHz subcarrier interval is 144Ts, that is, 4.68us.
  • a cell radius of 1 km will generate a transmission delay of about 6.7us, so a CP with a length of 4.68us can correspond to a cell radius of about 700m.
  • the terminal device does not need to send a preamble for the network device to estimate the uplink time error of the terminal device.
  • the terminal device carries the first identification information of the terminal device in the first message, and does not need to carry a preamble. In this way, resources for sending the first message can be saved, and at the same time, the delay caused when the terminal device selects the preamble can be avoided.
  • the first message includes only the first identification information of the terminal device that sent the first message. Therefore, the sequence number of the frequency domain resource used to send the first message involved in the calculation of the RA-RNTI mentioned above.
  • the sequence number of the frequency domain resource for sending the first identification information, and the sequence number of the time domain resource for sending the first message is the sequence number of the time domain resource for sending the first identification information.
  • a demodulation reference signal may be carried on the first symbol or more than one symbol of the first message, and the DMRS is used for uplink Channel estimation.
  • the DMRS may also be carried on the middle symbol of the uplink channel.
  • the first message includes only the first identification information of the terminal device, and does not include the preamble. This can save resources for sending the first message, and can also prevent the terminal device from causing a problem when the preamble is selected. Delay.
  • FIG. 6 is a flowchart of a random access method provided in Embodiment 3 of this application.
  • the random access process of this embodiment may include:
  • the terminal device sends a first message to the network device, where the first message includes a preamble sequence and first identification information after OCC scrambling.
  • Orthogonal Frequency Division Multiplexing Multiplexing (OFDM) symbols are not orthogonal and cause interference.
  • Timing, Advance, TA timing advances
  • this embodiment includes a preamble in the first message, which is used by the network device to evaluate the timing advance of the terminal device to improve the accuracy of uplink synchronization.
  • accurate uplink synchronization is conducive to network equipment and terminal equipment using a higher modulation and coding strategy (Modulation and Coding Scheme, MCS) for data transmission.
  • MCS Modulation and Coding Scheme
  • the terminal device can randomly select one of the preamble and the OCC, and can determine the other based on the mapping relationship between the two. For example, the terminal device randomly selects a preamble, and then, according to the mapping relationship between the preamble and the OCC, the OCC corresponding to the preamble can be determined. Alternatively, the terminal device randomly selects an OCC, and then, according to the mapping relationship between the preamble and the OCC, the preamble corresponding to the OCC can be determined, thereby improving the efficiency of the terminal device selecting the preamble and the OCC. In one example, it is assumed that the terminal device uses 2 symbols to transmit Preamble.
  • the OCC used to scramble the first identification information is, for example, [+ 1 + 1].
  • the OCC used to scramble the first identification information is, for example, [+ 1-1].
  • Preamble and OCC configuration information can be composed of Physical Broadcast Channel (PBCH), Remaining Minimum System Information (RMSI), Other System Information (Other System Information, OSI), and Radio Resource Control (Radio Resource Control). Signaling configurations such as RRC) can also be given directly by the standard.
  • PBCH Physical Broadcast Channel
  • RMSI Remaining Minimum System Information
  • OSI Other System Information
  • Radio Resource Control Radio Resource Control
  • the preamble in the first message in this embodiment is related to OCC, which is convenient for the network device to detect the first message. For example, the network device detects the preamble. According to the mapping relationship between the two, the OCC scrambled An identifier to improve the efficiency of the network device receiving the first message.
  • a mapping relationship exists between a frequency domain resource used to send a preamble and a frequency domain resource used to send first identification information.
  • the terminal device randomly selects the frequency domain resources used to send the preamble, according to the mapping relationship between the frequency domain resources used to send the preamble and the frequency domain resources used to send the first identification information, the terminal device can be quickly determined to send the first identification
  • the frequency domain resources of the information further improve the efficiency of the terminal device in determining the frequency domain resources used to send the preamble and the first identification information.
  • the preamble is a sequence.
  • the network device may detect the preamble first, and then, according to the frequency domain resource used to send the preamble and the frequency domain resource used to send the first identification information, there is a mapping. Relationship, quickly know the frequency domain resource used to send the first identification information, and receive the first identification information on the frequency domain resource, thereby improving the efficiency of the network device receiving the first message.
  • mapping relationship between the preamble and the OCC or a mapping relationship between a frequency domain resource used to send the preamble and a frequency domain resource used to send the first identification information may be given by a standard or a network
  • the device is configured in RMSI / OSI.
  • mapping relationship between a frequency domain resource used to send the preamble and a frequency domain resource used to send the first identification information which may include two cases:
  • the frequency domain resource used to send the preamble sequence is the same as the frequency domain resource used to send the first identification information. That is, the preamble and the first identification information are sent on the same frequency domain resource.
  • Case 2 there is a preset offset between a frequency domain resource used to send the preamble sequence and a frequency domain resource used to send the first identification information.
  • the preset offset is configured by a network device according to actual needs, or is given by a standard.
  • the offset between the frequency domain resources corresponding to different preamble sequences and the frequency domain resources corresponding to different first identification information may be the same or different.
  • the first message in this embodiment further includes a sequence number of a preamble sequence.
  • the network device may scramble the OCC and preamble of the first identification information.
  • the sequence number of the time-frequency resource determines the RA-RNTI of the terminal device. Then, the network device instructs the terminal device to resend the Preamble or Preamble and the first identification information according to the sequence number of the preamble through the RA-RNTI scrambled PDCCH.
  • the sequence number of the preamble sequence and the first identification information are sent on the same time-frequency resource, that is, the sequence number of the preamble sequence and the first identification information are carried on a physical uplink shared channel (PUSCH). )on.
  • PUSCH physical uplink shared channel
  • the first message further includes a sequence number of the preamble sequence and a sequence number of a frequency domain resource for sending the preamble sequence (for example, the sequence number of the interlace described above).
  • the network device may determine the RA of the terminal device according to the OCC that scrambles the first identification information and the sequence number of the frequency domain resource used to send the preamble. -RNTI. Then, the PDCCH scrambled by the RA-RNTI instructs the terminal device to resend the Preamble or Preamble and the first identification information according to the sequence number of the preamble.
  • the sequence number of the preamble sequence, the first identification information, and the sequence number of the frequency domain resource used to send the preamble sequence are all sent on the same time-frequency resource. That is, the sequence number of the preamble sequence, the first identification information, and the sequence number of the frequency domain resource used to send the preamble sequence are all carried on the PUSCH.
  • the network device blindly detects any one of the first identification information, the sequence number of the preamble, and the sequence number of the frequency domain resource used to send the preamble sequence, it can receive the other two, thereby reducing the blind detection of the network device.
  • the complexity can also reduce the resources occupied by the first message.
  • This embodiment does not limit the length of the preamble.
  • it may be a sequence with a length of 139 or a DMRS sequence with a length of 120, such as the DMRS sequence in Multefire (another cellular standard operating in an unlicensed band).
  • the frequency domain resources and time domain resources used by the preamble may be given by standards, or the network equipment may be configured in RMSI / OSI.
  • the frequency domain resource configuration method of the preamble is shown in FIG. 7.
  • the frequency domain resource allocation method used to send the first message is a resource interleaved allocation method.
  • the first message duration is 14 symbols
  • the preamble lasts 2 symbols
  • the channel bandwidth is 20MHz
  • the length of the preamble is For 139.
  • the preamble occupies one 10 RB interlace (eg, interlace 5) in the frequency domain plus two additional RBs, and each RB includes 12 subcarriers.
  • the additional 2 RBs can be 2 RBs in other interlace (ie, interlace other than interlace 5), or any 2 of 6 RBs other than interlace (refer to the above, 20MHz includes 106RB, 100RB is used to divide into 10 interlace, the remaining 6 RB).
  • the additional two RBs are the RBs of the remaining interlace
  • Send 5 sets of preamble It can be known from the above that the resource interleaving allocation method can increase the number of preambles sent by the channel, thereby increasing the capacity of the channel.
  • the interlace resource allocation may also be uneven, that is, the interval between two adjacent RBs in the interlace may not always be equal, which can make the network device more accurate in estimating the time advance.
  • this embodiment adopts a resource interleaved allocation method, which can increase the capacity of the communication system.
  • each group may contain 6 different preambles, each preamble corresponds to a different OCC, and when the PUSCH lasts 12 symbols, OCC is optional The quantity is 12.
  • each group when 10 interlace are used for transmission of 5 groups of different preambles, each group can contain 12 different preambles, each preamble corresponds to a different OCC, and the number of OCCs can be selected when the PUSCH lasts 12 symbols. Is 12.
  • each Preamble in this scenario corresponds to 2 interlace, so each Preamble can be sent twice repeatedly, which improves the success rate of Preamble transmission.
  • the sequence number of the resource may be the sequence number of the frequency domain resource used to send the first identification information, or the sequence number of the frequency domain resource used to send the preamble, or the average or sum of the two.
  • the sequence number of the time domain resource used for the first message involved in calculating the RA-RNTI can be the sequence number of the time domain resource used to send the first identification information, or the time domain resource used to send the preamble. Serial number.
  • the network device receives a first message sent by the terminal device.
  • the above S602 may include S602a and S602b, where:
  • the network device blindly detects time-frequency resources used for random access, and detects a preamble sequence.
  • the network device receives the first identification information scrambled by the OCC according to the mapping relationship between the detected preamble sequence and the OCC.
  • the preamble is a sequence, it is easy to be detected by network devices.
  • the network device After the network device detects the preamble, for example, it is preamble1, and preamble1 and OCC1 have a mapping relationship. In this way, the network device can determine the OCC used to scramble the first identification information OCC1.
  • the network device uses OCC1 to perform blind detection, which can receive the first identification information sent by the terminal device, thereby reducing the complexity of the network device blindly detecting the first identification information, and realizing the The rapid detection of the first identification information further reduces the delay of random access.
  • the above S602 may include S602c and S602d, where:
  • S602c The network device blindly detects time-frequency resources used for random access, and detects frequency-domain resources used to send the preamble sequence;
  • the network device obtains the first identification information for sending according to a mapping relationship between the frequency domain resource for sending the preamble sequence and the frequency domain resource for sending the first identification information. And receiving the first identification information on the frequency domain resource for sending the first identification information.
  • the network device can obtain the frequency domain resources used to send the preamble.
  • the network device uses the frequency domain resources used to send the preamble and the frequency domain resources used to send the first identification information.
  • the mapping relationship may obtain a frequency domain resource for sending the first identification information.
  • the network device receives the first identification information on the frequency domain resource for sending the first identification information, thereby reducing the complexity when the network device blindly checks the first identification information, and realizes the rapid reception of the first identification information. Reduce the delay of random access.
  • the result and subsequent actions of the network device after receiving the first message include the following situations:
  • the random access fails this time, and the terminal device will use the next Random Access Channel (RACH) resource available.
  • RACH Random Access Channel
  • the network device when the network device receives the preamble and the first identification information in the first message, the network device sends a second message in the Random Access Response (RAR) window to reply to the terminal device.
  • RAR Random Access Response
  • the network device may obtain the OCC for scrambling the first identification information according to the mapping relationship between the Preamble and the OCC, and The serial numbers of the time-frequency resources of the OCC and Preamble are used to calculate the RA-RNTI of the terminal device.
  • the network device may instruct the terminal device to resend the first identification information by using the RA-RNTI scrambled PDCCH, that is, the Media Access Control Element (Media Access Control Element, MAC CE) of the PDSCH indicated by the PDCCH.
  • the sequence number of the frequency domain resource for example, the sequence number of the interlace used to send the first identification information
  • the time domain resource that sent the first identification information may optionally carry OCC information for scrambling the first identification information.
  • the Preamble decoding fails, including:
  • the network device obtains the OCC used for scrambling the first identification information, and obtains the sequence number of the Preamble corresponding to the OCC according to the mapping relationship between Preamble and OCC, and according to the OCC and Preamble time
  • the sequence number of the frequency resource is used to calculate the RA-RNTI of the terminal device that sent the first message.
  • the network device may instruct the terminal device to resend the Preamble or Preamble and the first identification information through the RA-RNTI scrambled PDCCH, that is, the MAC of the PDSCH indicated by the PDCCH carries the sequence number of the frequency domain resource used to send the Preamble (for example, The sequence number of the interlace used to send the Preamble), the sequence number of the time domain resource and the Preamble corresponding to the OCC.
  • the network device may The sequence number of the OCC and preamble time-frequency resources that disturb the first identification information determines the RA-RNTI of the terminal device. Then, the network device instructs the terminal device to resend the Preamble or Preamble and the first identification information through the RA-RNTI scrambled PDCCH, that is, the MAC of the PDSCH indicated by the PDCCH carries the sequence number of the frequency domain resource used to send the Preamble. Sequence number of domain resource and Preamble.
  • the network device may determine the RA-RNTI of the terminal device according to the OCC that scrambles the first identification information and the sequence number of the frequency domain resource used to send the preamble. Then, the RA-RNTI scrambled PDCCH instructs the terminal device to resend the Preamble or Preamble and the first identification information, that is, the MAC of the PDSCH indicated by the PDCCH carries the sequence number of the frequency domain resource and the time domain resource for transmitting the Preamble. And Preamble serial number.
  • the network device scrambles the PDCCH by using the RA-RNTI of the terminal device, and sends the second message to the terminal device on the time-frequency resource pointed to by the scrambled PDCCH.
  • the RA-RNTI is determined using an OCC that scrambles the first identification information.
  • the second message in this embodiment includes not only the identification information of the one or more terminal devices that succeeded in random access, but also the TA obtained in the foregoing steps.
  • the method for the network device to generate the TA based on the preamble sequence is the same as the existing method, which is not described in this embodiment.
  • the network device generates a TA for the terminal device, and sends the TA to the terminal device in a second message, so that when the terminal device sends a message to the network device next time, it sends a message to the network device according to the TA, thereby realizing Uplink synchronization.
  • the terminal device sending the first message After receiving the RA-RNTI scrambled PDCCH sent by the network device, the terminal device sending the first message receives the second message sent by the network device according to the PDCCH.
  • the terminal device that sends the first message sends a third message or a fourth message to the network device.
  • the random access method provided in this embodiment includes the first identification information and preamble of the terminal device in the first message, so that the network device generates a TA for the terminal device, so that the terminal device sends a message to the network device according to the TA, which improves the Accuracy of uplink synchronization of each terminal device.
  • the first message in this embodiment further includes optimal downlink transmission beam information of the network device.
  • the first message in this embodiment may also carry the optimal downlink transmit beam information of the network device, so that the network device is in the optimal downlink. Sending the second message to the terminal device on the transmission beam can improve the sending efficiency of the second message.
  • the optimal downlink transmission beam information of the network device may be a sequence number of the optimal downlink transmission beam of the network device.
  • the first message in this embodiment further includes at least one downlink transmit beam information of the network device.
  • the first message includes at least one downlink transmission beam information of the network device.
  • the network device may select one downlink transmission beam from the at least one downlink transmission beam to send the second message.
  • the at least one downlink transmission beam information is a sequence number of at least one downlink transmission beam.
  • the operations and steps implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be used for the terminal device, and the operations and steps implemented by the network device can also be implemented by the network device.
  • the components (such as chips or circuits) of the device are implemented, which is not limited in the embodiments of the present application.
  • FIG. 8 is a schematic structural diagram of a random access device according to an embodiment of the present application.
  • the random access device 900 described in this embodiment may be a terminal device (or a component applicable to the terminal device) or a network device (or a component applicable to the network device) mentioned in the foregoing method embodiment.
  • the random access device may be used to implement the method corresponding to the terminal device or the network device described in the foregoing method embodiments. For details, refer to the description in the foregoing method embodiments.
  • the random access device 900 may include one or more processors 901.
  • the processor 901 may also be referred to as a processing unit, and may implement certain control or processing functions.
  • the processor 901 may be a general-purpose processor or a special-purpose processor. For example, it may be a baseband processor or a central processing unit.
  • the baseband processor can be used to process the communication protocol and communication data
  • the central processing unit can be used to control the communication device, execute a software program, and process the data of the software program.
  • the processor 901 may also store instructions 903 or data (such as intermediate data).
  • the instruction 903 may be executed by the processor, so that the random access device 900 executes the method corresponding to the terminal device or the network device described in the foregoing method embodiment.
  • the random access device 900 may include a circuit that can implement the functions of sending, receiving, or communicating in the foregoing method embodiments.
  • the random access device 900 may include one or more memories 902 on which instructions 904 may be stored, and the instructions may be executed on the processor 901, so that the random access device 900 performs the method described in the foregoing method embodiment.
  • the memory 902 may also store data.
  • the processor 901 and the memory 902 may be separately provided, or may be integrated together.
  • the random access device 900 may further include a receiver 905 and a transmitter 906, where the receiver 905 and the transmitter 906 may be separately set or integrated together.
  • the processor 901 may be referred to as a processing unit, and controls a random access device (a terminal device or a network device).
  • the receiver 905 may be referred to as a receiving unit, a receiver, a receiving circuit, or a receiver, etc., and is configured to implement a receiving function of a random access device.
  • the transmitter 906 may be called a transmitting unit, a transmitter, a transmitting circuit, or a transmitter, etc., and is configured to implement a transmitting function of a random access device.
  • the sender 906 may send a first message to the network device, where the first message includes The first identification information scrambled by the orthogonal coverage code OCC, and the first message is used for a terminal device corresponding to the first identification information to request random access to the network device; the receiver 905 receives the A second message, where the second message includes identification information of one or more terminal devices that succeed in random access; and is determined according to whether the identification information of the one or more terminal devices includes the first identification information Whether random access is successful.
  • the RA-RNTI of the terminal device is determined using an OCC that scrambles the first identification information.
  • the receiver is configured to receive a first message sent by a terminal device, and the transmitter is configured to send a message to the terminal according to the first message.
  • the device sends a second message.
  • the first message includes first identification information scrambled by using an orthogonal coverage code OCC, and the first message is used by the terminal device corresponding to the first identification information to request random access to the network device.
  • the second message includes identification information of one or more terminal devices that succeed in random access, and the identification information of the one or more terminal devices includes the first identification information.
  • the transmitter is specifically configured to use the random access wireless network of the terminal device to temporarily identify the RA-RNTI to scramble the physical downlink control channel PDCCH, and when the scrambled PDCCH points to the And sending the second message to the terminal device over frequency resources, where the RA-RNTI is determined by using OCC that scrambles the first identification information.
  • the processor 901, the receiver 905, and the transmitter 906 described in this application can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, and application-specific integrated circuits. (application specific integrated circuit (ASIC), printed circuit board (PCB), electronic equipment, etc.
  • the processor 901, the receiver 905, and the transmitter 906 can also be manufactured by various 1C process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), P-type metal oxide semiconductor (PMOS), Bipolar Junction Transistor (BJT), Bipolar CMOS (BiCMOS), Silicon Germanium (SiGe), GaAs GaAs).
  • CMOS complementary metal oxide semiconductor
  • NMOS nMetal-oxide-semiconductor
  • PMOS P-type metal oxide semiconductor
  • BJT Bipolar Junction Transistor
  • BiCMOS Bipolar CMOS
  • SiGe Silicon Germanium
  • the random access device 900 is described by using a terminal device or a network device as an example, the scope of the random access device described in this application is not limited to the above terminal device or the above network device, and random The structure of the access device may not be limited by FIG. 8.
  • the random access device 900 may be a stand-alone device or may be part of a larger device.
  • the device may be:
  • the IC set may also include a storage component for storing data and / or instructions;
  • ASIC such as a modem (MSM)
  • FIG. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device may be applicable to the terminal device described in the foregoing embodiments of the present application.
  • FIG. 9 shows only the main components of the terminal device.
  • the terminal device 1000 includes a processor, a memory, a control circuit, an antenna, and an input / output device.
  • the processor is mainly used for processing communication protocols and communication data, and controlling the entire terminal, executing software programs, and processing data of the software programs.
  • the memory is mainly used for storing software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals.
  • the antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves.
  • Input / output devices such as a touch screen, a display screen, and a keyboard, are mainly used to receive data input by the user and output data to the user.
  • the processor can read the software program in the storage unit, interpret and execute the software program's instructions, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit processes the baseband signal, the radio frequency signal is sent out in the form of electromagnetic waves through the antenna.
  • the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor.
  • the processor converts the baseband signal into data and processes the data.
  • FIG. 9 shows only one memory and a processor. In an actual terminal device, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, which is not limited in the embodiment of the present application.
  • the processor may include a baseband processor and a central processor.
  • the baseband processor is mainly used to process communication protocols and communication data
  • the central processor is mainly used to control the entire terminal and execute software. Programs that process data from software programs.
  • the processor in FIG. 9 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors, which are interconnected through technologies such as a bus.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal may include multiple central processors to enhance its processing capabilities, and various components of the terminal device may be connected through various buses.
  • the baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit may also be expressed as a central processing circuit or a central processing chip.
  • the function of processing communication protocols and communication data may be built in the processor or stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.
  • the antenna and the control circuit having a transmitting and receiving function can be regarded as the transceiver 1001 of the terminal device 1000.
  • the terminal device 1000 includes a transceiver 1001 and a processor 1002.
  • the device used by the transceiver 1001 to implement the receiving function can be regarded as a receiver
  • the device used by the transceiver 1001 to implement the transmitting function can be regarded as a transmitter, that is, the transceiver 1001 includes a receiver and a transmitter.
  • the receiver may also be called a receiver, a receiver, a receiving circuit, and the like
  • a transmitter may be called a transmitter, a transmitter, or a transmitting circuit.
  • FIG. 10 is a schematic structural diagram of a random access device according to an embodiment of the present application.
  • the random access device may be a terminal device, a component of the terminal device (for example, an integrated circuit, a chip, or the like), or may be Other communication modules are used to implement the operations or steps corresponding to the terminal devices in the foregoing method embodiments.
  • the random access apparatus 700 may include: a sending module 701, a receiving module 702, and a processing module 703.
  • a sending module 701 is configured to send a first message to a network device, where the first message includes first identification information that is scrambled by using an orthogonal coverage code OCC, and the first message is used for the first identification information corresponding to the first identification information.
  • a terminal device requests random access to the network device;
  • the receiving module 702 is configured to receive a second message sent by the network device, where the second message includes identification information of one or more terminal devices that have succeeded in random access;
  • the processing module 703 is configured to determine whether the random access is successful according to whether the identification information of the one or more terminal devices includes the first identification information.
  • the random access device in this embodiment may be used to execute the technical solutions of the terminal devices in the foregoing method embodiments.
  • the implementation principles and technical effects are similar, and details are not described herein again.
  • the first message in this embodiment further includes a preamble sequence.
  • mapping relationship between the preamble sequence and the OCC there is a mapping relationship between a frequency domain resource used to send the preamble sequence and a frequency domain resource used to send the first identification information.
  • a frequency domain resource used to send the preamble sequence is the same as a frequency domain resource used to send the first identification information, or a frequency domain resource used to send the preamble sequence and used to send the first There is a preset offset between the frequency domain resources of the identification information.
  • the random access wireless network temporary identity RA-RNTI of the terminal device is determined by using OCC that scrambles the first identity information.
  • the RA-RNTI uses an OCC that scrambles the first identification information, a sequence number of a frequency domain resource used to send the first message, and a time domain resource used to send the first message.
  • the serial number and / or the total number of OCCs selectable by the terminal device are determined.
  • the sequence number of the frequency domain resource used to send the first message is used for sending The sequence number of the frequency domain resource of the first message.
  • the sending module is further configured to: if the identification information of the one or more terminal devices includes the first identification information, send a third message to the network device, where the third message is For indicating that the terminal device corresponding to the first identification information succeeds in random access; if the identification information of the one or more terminal devices does not include the first identification information or the decoding of the second message fails, the Sending, by the network device, a fourth message, so that the network device resends the second message to the terminal device according to the fourth message, where the fourth message is used to indicate that the first identification information corresponds to The terminal device random access failed.
  • the first message further includes a sequence number of the preamble sequence; or, the first message further includes a sequence number of the preamble sequence and a sequence number of a frequency domain resource for transmitting the preamble sequence.
  • sequence number of the preamble sequence and the first identification information are sent on the same time-frequency resource;
  • the sequence number of the preamble sequence, the first identification information, and the sequence number of a frequency domain resource used to send the preamble sequence are all sent on the same time-frequency resource.
  • the first message further includes optimal downlink transmission beam information of the network device.
  • the second message further includes configuration information of a physical uplink control channel PUCCH for sending the third message or for sending the fourth message.
  • the first identification information is a globally unique network identification S-TMSI of the terminal device.
  • the first identification information is a cell radio network temporary identification C-RNTI of the terminal device.
  • the sending module 701 is further configured to: if the time-frequency resource allowed to send the first message is greater than the time-frequency resource occupied by the first message, the time-frequency resource allowed to send the first message is A plurality of symbol positions in the resource listen first and then speak LBT, and send the first message at the symbol position where the first LBT succeeded.
  • the receiving module 702 is specifically configured to, after receiving the RA-RNTI scrambled physical downlink control channel PDCCH sent by the network device, receive the PDCCH sent by the network device according to the PDCCH.
  • the second message is specifically configured to, after receiving the RA-RNTI scrambled physical downlink control channel PDCCH sent by the network device, receive the PDCCH sent by the network device according to the PDCCH. The second message.
  • the processing module 703 is further configured to randomly select an OCC from a plurality of OCCs selectable by the terminal device, and use the selected OCC to scramble the first identification information;
  • the sending module 701 is configured to send a first message carrying the scrambled first identification information to the network device on a randomly selected time-frequency resource for random access.
  • the second message further includes a timing advance TA.
  • the random access device in this embodiment may be used to execute the technical solutions of the terminal devices in the foregoing method embodiments.
  • the implementation principles and technical effects are similar, and details are not described herein again.
  • FIG. 11 is a schematic structural diagram of a random access device according to an embodiment of the present application.
  • the random access device may be a network device, a component of a network device (for example, an integrated circuit, a chip, or the like), or may be Other communication modules are used to implement operations corresponding to network devices in the foregoing method embodiments.
  • the random access apparatus 800 may include: a transceiver module 801 and a sending module 802.
  • the receiving module 801 is configured to receive a first message sent by a terminal device, where the first message includes first identification information scrambled by using an orthogonal coverage code OCC, and the first message is used to correspond to the first identification information.
  • the terminal device requests random access to the network device;
  • a sending module 802 is configured to send a second message to the terminal device according to the first message, where the second message includes identification information of one or more terminal devices that have succeeded in random access.
  • the one or more The identification information of each terminal device includes the first identification information.
  • the random access device in this embodiment may be used to execute the technical solutions of the network devices in the foregoing method embodiments.
  • the implementation principles and technical effects are similar, and details are not described herein again.
  • the first message further includes a preamble sequence.
  • mapping relationship between the preamble sequence and the OCC there is a mapping relationship between a frequency domain resource used to send the preamble sequence and a frequency domain resource used to send the first identification information.
  • a frequency domain resource used to send the preamble sequence is the same as a frequency domain resource used to send the first identification information, or a frequency domain resource used to send the preamble sequence and used to send the first There is a preset offset between the frequency domain resources of the identification information.
  • the receiving module 801 is specifically configured to blindly detect time-frequency resources for random access, detect the preamble sequence, and detect the preamble sequence according to the preamble.
  • the mapping relationship between the sequence and the OCC receives the first identification information scrambled by the OCC.
  • the receiving module 801 is specifically used for blind detection for random access. Incoming time-frequency resources, a frequency domain resource for sending the preamble sequence is detected, and based on the frequency domain resource for sending the preamble sequence and the frequency domain resource for sending the first identification information A mapping relationship between them, acquiring the frequency domain resource for sending the first identification information, and receiving the first identification information on the frequency domain resource for sending the first identification information.
  • the sending module 802 is specifically configured to use the random access wireless network of the terminal device to temporarily identify the RA-RNTI to scramble the physical downlink control channel PDCCH. And sending the second message to the terminal device over frequency resources, where the RA-RNTI is determined by using OCC that scrambles the first identification information.
  • the RA-RNTI uses an OCC that scrambles the first identification information, a sequence number of a frequency domain resource used to send the first message, and a time domain resource used to send the first message.
  • the serial number and / or the total number of OCCs selectable by the terminal device are determined.
  • the sequence number of the frequency domain resource used to send the first message is used for sending The sequence number of the frequency domain resource of the first message.
  • the receiving module 801 is further configured to receive a third message sent by the terminal device, where the third message is used to indicate that the terminal device corresponding to the first identification information succeeds in random access; or Receiving a fourth message sent by the terminal device, where the fourth message is used to indicate that a random access failure of the terminal device corresponding to the first identification information fails;
  • the sending module 802 is further configured to resend the second message to the terminal device according to the fourth message.
  • the first message further includes a sequence number of the preamble sequence; or, the first message further includes a sequence number of the preamble sequence and a sequence number of a frequency domain resource for transmitting the preamble sequence.
  • sequence number of the preamble sequence and the first identification information are sent on the same time-frequency resource;
  • the sequence number of the preamble sequence, the first identification information, and the sequence number of a frequency domain resource used to send the preamble sequence are all sent on the same time-frequency resource.
  • the first message further includes optimal downlink transmission beam information of the network device.
  • the second message further includes configuration information of a physical uplink control channel PUCCH for sending the third message or for sending the fourth message.
  • the first identification information is a globally unique network identification S-TMSI of the terminal device.
  • the first identification information is a cell radio network temporary identification C-RNTI of the terminal device.
  • the second message further includes a preamble sequence generation timing advance TA.
  • the random access device in this embodiment may be used to execute the technical solutions of the network devices in the foregoing method embodiments.
  • the implementation principles and technical effects are similar, and details are not described herein again.
  • the division of the modules in the embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner.
  • the functional modules in the embodiments of the present application may be integrated into one processing module, or each module may exist separately physically, or two or more modules may be integrated into one module.
  • the above integrated modules may be implemented in the form of hardware or software functional modules.
  • the integrated module When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially a part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium.
  • a computer device which may be a personal computer, a server, or a network device
  • the aforementioned storage media include: U disks, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks or compact discs, and other media that can store program codes .
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server, or data center Transmission by wire (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) to another website site, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, and the like that includes one or more available medium integration.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (Solid State Disk (SSD)), and the like.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a DVD
  • a semiconductor medium for example, a solid state disk (Solid State Disk (SSD)

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Abstract

本申请提供一种随机接入方法、装置、设备及存储介质，该方法包括：终端设备采用OCC加扰终端设备的第一标识信息，并向网络设备发送第一消息，网络设备接收到终端设备发送的第一消息后，根据该第一消息向终端设备发送第二消息，该第二消息中包括随机接入成功的一个或多个终端设备的标识信息，这样终端设备可以根据一个或多个终端设备中是否包括本终端设备的第一标识信息，来确定本终端设备的随机接入成功或失败。即该方法为两步随机接入方法，简化随机接入的流程，降低接入时延，减小信令开销。同时，采用OCC加扰终端设备的第一标识信息，可以增大不同终端设备的第一标识信息不同的可能性，进而降低了碰撞概率。

Description

随机接入方法、装置、设备及存储介质
本申请要求于2018年08月10日提交中国专利局、申请号为201810912253.4、申请名称为“随机接入方法、装置、设备及存储介质”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，尤其涉及一种随机接入方法、装置、设备及存储介质。
背景技术
终端设备搜索到小区后，可以与该小区进行下行同步，以能够接收下行数据。但终端设备需要在与该小区进行上行同步后才能发送上行数据。其中，终端设备可以通过竞争随机接入过程与该小区进行上行同步，竞争随机接入过程分四步完成：终端设备向网络设备发送前导码(即为Msg1)，网络设备根据接收的前导码向终端设备发送随机接入响应(Random Access Response，RAR)(即为Msg2)，然后终端设备与网络设备进行第一次上行调度传输(即为Msg3)，最后网络设备向终端设备反馈竞争解决(即为Msg4)。由上述可知，现有的竞争随机接入过程较复杂，接入时间长，信令开销大。
发明内容
本申请提供一种随机接入方法、装置、设备及存储介质，简化随机接入过程，降低时延，减少信令开销。
第一方面，本申请提供一种通信方法，包括：向网络设备发送第一消息，其中，第一消息包括采用正交覆盖码OCC加扰后的第一标识信息，该第一消息用于所述第一标识信息对应的终端设备请求随机接入所述网络设备；接收网络设备发送的第二消息，其中，第二消息中包括随机接入成功的一个或多个终端设备的标识信息，这样可以根据一个或多个终端设备的标识信息中是否包括第一标识信息，确定随机接入是否成功。
本申请的有益效果包括：本申请提出一种两步的随机接入方法，简化随机接入的流程，降低随机接入的接入时延，减小信令开销。同时，采用正交覆盖码OCC加扰终端设备的第一标识信息，这样可以增大不同终端设备的第一标识信息不同的可能性，进而降低了随机接入过程中不同终端设备的碰撞概率，提高了随机接入信道的容量。
可选的，第一消息还可以包括前导序列，对应的第二消息还包括网络设备根据该前导序列生成的时间提前量TA，这样可以提高上行同步的准确性。
可选的，前导序列与OCC存在映射关系，或者，用于发送前导序列的频域资源与用于发送第一标识信息的频域资源存在映射关系。这样，方便网络设备检测到第一消 息，即检测到其中的一个时，可获得另一个，进而降低了网络设备盲检第一消息的复杂度，提高网络设备接收第一消息的效率。
可选的，用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源相同，或者用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源之间具有预设的偏移量。
可选的，所述终端设备的随机接入无线网络临时标识RA-RNT采用加扰所述第一标识信息的OCC确定。可以降低RA-RNTI的碰撞概率。
可选的，上述RA-RNTI采用加扰所述第一标识信息的OCC和用于发送所述第一消息的频域资源的序号，以及用于发送所述第一消息的时域资源的序号和/或所述终端设备可选的OCC的总数量确定。这样可以进一步增大不同终端设备根据不同的OCC确定的RA-RNTI不同的可能性，进而降低了RA-RNTI的碰撞概率。
可选的，若用于发送所述第一消息的频域资源的分配方式为资源交错分配方式，则用于发送所述第一消息的频域资源的序号为资源交错分配中用于发送所述第一消息的频域资源的序号。
可选的，所述接收所述网络设备发送的第二消息之后，所述方法还包括：若所述一个或多个终端设备的标识信息中包括所述第一标识信息，则向所述网络设备发送第三消息，所述第三消息用于指示所述第一标识信息对应的终端设备随机接入成功；若所述一个或多个终端设备的标识信息中不包括所述第一标识信息，或发送所述第一消息的终端设备解码所述第二消息失败，则向所述网络设备发送第四消息，以使所述网络设备根据所述第四消息向所述终端设备重发所述第二消息，所述第四消息用于指示所述第一标识信息对应的终端设备随机接入失败。这样，向网络设备发送第三消息可以避免网络设备在此向终端设备发送第二消息造成资源的浪费。向网络设备发送第四消息，可以使网络设备及时重发第二消息，而不需要等待预设时长，进而有效降低随机接入的时延。
可选的，所述第一消息还包括所述前导序列的序号，这样在preamble与OCC不具有映射关系，且网络设备没有接收到第一消息中的preamble时，网络设备可以根据前导序列的序号指示终端设备重复preamble。
可选的，所述第一消息还包括所述前导序列的序号和用于发送所述前导序列的频域资源的序号。这样在preamble与OCC不具有映射关系，且网络设备没有接收到第一消息中的preamble时，网络设备可以根据接收到的第一标识信息和前导序列的频域资源的序号，生成RA-RNTI，并在RA-RNTI加扰的PDCCH上指示前导序列的序号对应的终端设备重复preamble，保证了preamble的重复。
可选的，所述前导序列的序号和所述第一标识信息在同一时频资源上发送；或者，所述前导序列的序号、所述第一标识信息和用于发送所述前导序列的频域资源的序号均在同一时频资源上发送。可以减少第一消息所占用的资源。
可选的，所述第一消息还包括所述网络设备的最佳下行发射波束信息。对于高频系统，可以提高第二消息的发送效率。
可选的，所述第二消息还包括用于发送所述第三消息或用于发送所述第四消息的物理上行控制信道PUCCH的配置信息。以使终端设备根据第二消息中PUCCH配置信 息，在PUCCH配置信息指示的资源上发送第三消息或第四消息，可以防止多个终端设备同时发送第三消息或第四消息发送时发生拥堵。
可选的，第一标识信息为终端设备的全球唯一网络标识S-TMSI，可以降低不同终端设备的碰撞概率。
可选的，若终端设备处于上行失步下行同步，则第一标识信息为终端设备的小区无线网络临时标识C-RNTI。
可选的，若允许发送所述第一消息的时频资源大于所述第一消息占用的时频资源，则所述向网络设备发送第一消息，包括：在所述允许发送所述第一消息的时频资源内的多个符号位置进行先听后说LBT，并在第一个LBT成功的符号位置上发送所述第一消息。可以提高第一消息的发送成功率。
可选的，所述接收所述网络设备发送的第二消息，包括：在接收到所述网络设备发送的所述RA-RNTI加扰的物理下行控制信道PDCCH后，根据所述PDCCH接收所述网络设备发送的所述第二消息，实现对第二消息的准确接收。
可选的，所述向网络设备发送第一消息，包括：从所述终端设备可选择的多个OCC中随机选择一个OCC，并使用选择的OCC加扰所述第一标识信息；在随机选择的用于随机接入的时频资源上，向所述网络设备发送携带加扰后的所述第一标识信息的第一消息。这样，使用随机选择的OCC来加扰第一标识信息，可以增大不同终端设备的第一标识信息不同的可能性，进而降低了终端设备的碰撞概率。
可选的，所述第二消息还包括时间提前量TA，可以提高上行同步的准确性。
第二方面，本申请提供一种随机接入方法，包括：接收终端设备发送的第一消息，所述第一消息包括采用正交覆盖码OCC加扰后的第一标识信息，所述第一消息用于所述第一标识信息对应的所述终端设备请求随机接入所述网络设备；根据所述第一消息，向所述终端设备发送第二消息，所述第二消息中包括随机接入成功的一个或多个终端设备的标识信息，所述一个或多个终端设备的标识信息包括所述第一标识信息。
本申请的有益效果包括：本申请提出一种两步的随机接入方法，简化随机接入的流程，降低随机接入的接入时延，减小信令开销。同时，采用正交覆盖码OCC加扰终端设备的第一标识信息，这样可以增大不同终端设备的第一标识信息不同的可能性，进而降低了随机接入过程中不同终端设备的碰撞概率，提高了随机接入信道的容量。
可选的，所述第一消息还包括前导序列，则根据所述第一消息，向所述终端设备发送第二消息，包括：根据所述前导序列生成时间提前量TA；向所述终端设备发送第二消息，所述第二消息包括所述TA。这样可以提高上行同步的准确性。
可选的，所述前导序列与所述OCC存在映射关系，或者，用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系。这样，方便网络设备检测到第一消息，检测到其中的一个时，即可获得另一个，进而降低了网络设备盲检第一消息的复杂度，提高网络设备接收第一消息的效率。
可选的，用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源相同，或者用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源之间具有预设的偏移量。
可选的，若所述前导序列与所述OCC存在映射关系，则所述接收所述终端设备发 送的第一消息，包括：盲检用于随机接入的时频资源，检测所述前导序列；根据所述前导序列与所述OCC之间的映射关系，接收所述OCC加扰后的第一标识信息。这样，方便网络设备检测到第一消息，即检测到其中的一个时，可获得另一个，进而降低了网络设备盲检第一消息的复杂度，提高网络设备接收第一消息的效率。
可选的，若用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系，则所述接收所述终端设备发送的第一消息，包括：盲检用于随机接入的时频资源，检测到用于发送所述前导序列的频域资源；根据所述用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源之间的映射关系，获取所述用于发送所述第一标识信息的频域资源，并在所述用于发送所述第一标识信息的频域资源上接收所述第一标识信息。这样，网络设备在检测到一个时，可以获知另一个的频域资源的位置，在该频域资源的位置上接收即可，进而降低了网络设备盲检第一消息的复杂度，提高网络设备接收第一消息的效率。
可选的，所述方法还包括：根据加扰所述第一标识信息的OCC确定所述终端设备的随机接入无线网络临时标识RA-RNTI，使用所述RA-RNTI加扰物理下行控制信道PDCCH，并在加扰后的所述PDCCH所指向的时频资源上向所述终端设备发送所述第二消息。可以降低RA-RNTI的碰撞概率。
可选的，上述根据加扰所述第一标识信息的OCC确定所述终端设备的随机接入无线网络临时标识RA-RNTI，包括：根据加扰所述第一标识信息的OCC和用于发送所述第一消息的频域资源的序号，以及用于发送所述第一消息的时域资源的序号和/或所述终端设备可选的OCC的总数量，确定所述RA-RNTI。这样可以进一步增大不同终端设备根据不同的OCC确定的RA-RNTI不同的可能性，进而降低了RA-RNTI的碰撞概率。
可选的，若用于发送所述第一消息的频域资源的分配方式为资源交错分配方式，则用于发送所述第一消息的频域资源的序号为资源交错分配中用于发送所述第一消息的频域资源的序号。
可选的，所述根据所述第一消息，向所述终端设备发送第二消息之后，所述方法还包括：接收所述终端设备发送的第三消息，所述第三消息用于指示所述第一标识信息对应的终端设备随机接入成功；或者，接收所述终端设备发送的第四消息，并根据所述第四消息重发所述第二消息，其中，所述第四消息用于指示所述第一标识信息对应的终端设备随机接入失败。这样，向网络设备发送第三消息可以避免网络设备在此向终端设备发送第二消息造成资源的浪费。向网络设备发送第四消息，可以使网络设备及时重发第二消息，而不需要等待预设时长，进而有效降低随机接入的时延。
可选的，所述第一消息还包括所述前导序列的序号，这样在preamble与OCC不具有映射关系，且网络设备没有接收到第一消息中的preamble时，网络设备可以根据前导序列的序号指示终端设备重复preamble。
可选的，所述第一消息还包括所述前导序列的序号和用于发送所述前导序列的频域资源的序号。这样在preamble与OCC不具有映射关系，且网络设备没有接收到第一消息中的preamble时，网络设备可以根据接收到的第一标识信息和前导序列的频域资源的序号，生成RA-RNTI，并在RA-RNTI加扰的PDCCH上指示前导序列的序号对 应的终端设备重复preamble，保证了preamble的重复。
可选的，所述前导序列的序号和所述第一标识信息在同一时频资源上发送；或者，所述前导序列的序号、所述第一标识信息和用于发送所述前导序列的频域资源的序号均在同一时频资源上发送。可以减少第一消息所占用的资源。
可选的，所述第一消息还包括所述网络设备的最佳下行发射波束信息。对于高频系统，可以提高第二消息的发送效率。
可选的，所述第二消息还包括用于发送所述第三消息或用于发送所述第四消息的物理上行控制信道PUCCH的配置信息。以使终端设备根据第二消息中PUCCH配置信息，在PUCCH配置信息指示的资源上发送第三消息或第四消息，可以防止多个终端设备同时发送第三消息或第四消息发送时发生拥堵。
可选的，所述第一标识信息为所述终端设备的全球唯一网络标识S-TMSI，可以降低不同终端设备的碰撞概率。
可选的，若所述终端设备处于上行失步下行同步，则所述第一标识信息为所述终端设备的小区无线网络临时标识C-RNTI。
下面将提供几种随机接入装置和设备，其内容与效果与上述方法的内容和效果对应，下面对这些内容和技术效果不再赘述。
第三方面，本申请提供一种随机接入装置，包括：
发送模块，用于向网络设备发送第一消息，所述第一消息包括采用正交覆盖码OCC加扰后的第一标识信息，所述第一消息用于所述第一标识信息对应的终端设备请求随机接入所述网络设备；
接收模块，用于接收所述网络设备发送的第二消息，所述第二消息中包括随机接入成功的一个或多个终端设备的标识信息；
处理模块，用于根据所述一个或多个终端设备的标识信息中是否包括所述第一标识信息，确定随机接入是否成功。
可选的，所述第一消息还包括前导序列，所述第二消息还包括所述网络设备根据所述前导序列生成的时间提前量TA。
可选的，所述前导序列与所述OCC存在映射关系，或者，用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系。
可选的，用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源相同，或者用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源之间具有预设的偏移量。
可选的，所述装置还包括：RA-RNTI确定模块，用于根据加扰所述第一标识信息的OCC确定所述终端设备的随机接入无线网络临时标识RA-RNTI。
可选的，所述RA-RNTI确定模块，具体用于根据加扰所述第一标识信息的OCC和用于发送所述第一消息的频域资源的序号，以及用于发送所述第一消息的时域资源的序号和/或所述终端设备可选的OCC的总数量，确定所述RA-RNTI。
可选的，若用于发送所述第一消息的频域资源的分配方式为资源交错分配方式，则用于发送所述第一消息的频域资源的序号为资源交错分配中用于发送所述第一消息的频域资源的序号。
可选的，所述发送模块，还用于若所述一个或多个终端设备的标识信息中包括所述第一标识信息，则向所述网络设备发送第三消息，所述第三消息用于指示所述第一标识信息对应的终端设备随机接入成功；若所述一个或多个终端设备的标识信息中不包括所述第一标识信息，或解码所述第二消息失败，则向所述网络设备发送第四消息，以使所述网络设备根据所述第四消息向所述终端设备重发所述第二消息，所述第四消息用于指示所述第一标识信息对应的终端设备随机接入失败。
可选的，所述第一消息还包括所述前导序列的序号；或者，所述第一消息还包括所述前导序列的序号和用于发送所述前导序列的频域资源的序号。
可选的，所述前导序列的序号和所述第一标识信息在同一时频资源上发送；或者，
所述前导序列的序号、所述第一标识信息和用于发送所述前导序列的频域资源的序号均在同一时频资源上发送。
可选的，所述第一消息还包括所述网络设备的最佳下行发射波束信息。
可选的，所述第二消息还包括用于发送所述第三消息或用于发送所述第四消息的物理上行控制信道PUCCH的配置信息。
可选的，所述第一标识信息为所述终端设备的全球唯一网络标识S-TMSI。
可选的，若所述终端设备处于上行失步下行同步，则所述第一标识信息为所述终端设备的小区无线网络临时标识C-RNTI。
可选的，所述发送模块，还用于若允许发送所述第一消息的时频资源大于所述第一消息占用的时频资源，在所述允许发送所述第一消息的时频资源内的多个符号位置进行先听后说LBT，并在第一个LBT成功的符号位置上发送所述第一消息。
可选的，所述接收模块，具体用于在接收到所述网络设备发送的所述RA-RNTI加扰的物理下行控制信道PDCCH后，根据所述PDCCH接收所述网络设备发送的所述第二消息。
可选的，所述处理模块，还用于从所述终端设备可选择的多个OCC中随机选择一个OCC，并使用选择的OCC加扰所述第一标识信息；
所述发送模块，用于在随机选择的用于随机接入的时频资源上，向所述网络设备发送携带加扰后的所述第一标识信息的第一消息。
第四方面，本申请提供一种随机接入装置，包括：
接收模块，用于接收终端设备发送的第一消息，所述第一消息包括采用正交覆盖码OCC加扰后的第一标识信息，所述第一消息用于所述第一标识信息对应的所述终端设备请求随机接入所述网络设备；
发送模块，用于根据所述第一消息，向所述终端设备发送第二消息，所述第二消息中包括随机接入成功的一个或多个终端设备的标识信息，所述一个或多个终端设备的标识信息包括所述第一标识信息。
可选的，所述第一消息还包括前导序列，则所述装置还包括：
TA生成模块，用于根据所述前导序列生成时间提前量TA；
所述发送模块，还用于向所述终端设备发送第二消息，所述第二消息包括所述TA。
可选的，所述前导序列与所述OCC存在映射关系，或者，用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系。
可选的，用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源相同，或者用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源之间具有预设的偏移量。
可选的，若所述前导序列与所述OCC存在映射关系，则所述接收模块，具体用于盲检用于随机接入的时频资源，检测所述前导序列，并根据所述前导序列与所述OCC之间的映射关系，接收所述OCC加扰后的第一标识信息。
可选的，若用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系，则所述接收模块，具体用于盲检用于随机接入的时频资源，检测到用于发送所述前导序列的频域资源，并根据所述用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源之间的映射关系，获取所述用于发送所述第一标识信息的频域资源，并在所述用于发送所述第一标识信息的频域资源上接收所述第一标识信息。
可选的，所述装置还包括：RA-RNTI确定模块，用于根据加扰所述第一标识信息的OCC确定所述终端设备的随机接入无线网络临时标识RA-RNTI；
加扰模块，用于使用所述RA-RNTI加扰物理下行控制信道PDCCH；
所述发送模块，具体用于在加扰后的所述PDCCH所指向的时频资源上向所述终端设备发送所述第二消息。
可选的，所述RA-RNTI确定模块，具体用于根据加扰所述第一标识信息的OCC和用于发送所述第一消息的频域资源的序号，以及用于发送所述第一消息的时域资源的序号和/或所述终端设备可选的OCC的总数量，确定所述RA-RNTI。
可选的，若用于发送所述第一消息的频域资源的分配方式为资源交错分配方式，则用于发送所述第一消息的频域资源的序号为资源交错分配中用于发送所述第一消息的频域资源的序号。
可选的，所述接收模块，还用于接收所述终端设备发送的第三消息，所述第三消息用于指示所述第一标识信息对应的终端设备随机接入成功；或者，用于接收所述终端设备发送的第四消息，其中，所述第四消息用于指示所述第一标识信息对应的终端设备随机接入失败；
所述发送模块，还用于根据所述第四消息向所述终端设备重发所述第二消息。
可选的，所述第一消息还包括所述前导序列的序号；或者，所述第一消息还包括所述前导序列的序号和用于发送所述前导序列的频域资源的序号。
可选的，所述前导序列的序号和所述第一标识信息在同一时频资源上发送；或者，
所述前导序列的序号、所述第一标识信息和用于发送所述前导序列的频域资源的序号均在同一时频资源上发送。
可选的，所述第一消息还包括所述网络设备的最佳下行发射波束信息。
可选的，所述第二消息还包括用于发送所述第三消息或用于发送所述第四消息的物理上行控制信道PUCCH的配置信息。
可选的，所述第一标识信息为所述终端设备的全球唯一网络标识S-TMSI。
可选的，若所述终端设备处于上行失步下行同步，则所述第一标识信息为所述终端设备的小区无线网络临时标识C-RNTI。
第五方面，本申请提供一种随机接入设备，包括：
发送器，用于向网络设备发送第一消息，所述第一消息包括采用正交覆盖码OCC加扰后的第一标识信息，所述第一消息用于所述第一标识信息对应的终端设备请求随机接入所述网络设备；
接收器，用于接收所述网络设备发送的第二消息，所述第二消息中包括随机接入成功的一个或多个终端设备的标识信息；
处理器，用于根据所述一个或多个终端设备的标识信息中是否包括所述第一标识信息，确定随机接入是否成功。
可选的，所述第一消息还包括前导序列，所述第二消息还包括所述网络设备根据所述前导序列生成的时间提前量TA。
可选的，所述前导序列与所述OCC存在映射关系，或者，用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系。
可选的，用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源相同，或者用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源之间具有预设的偏移量。
可选的，所述处理器，还用于根据加扰所述第一标识信息的OCC确定所述终端设备的随机接入无线网络临时标识RA-RNTI。
可选的，所述处理器，具体用于根据加扰所述第一标识信息的OCC和用于发送所述第一消息的频域资源的序号，以及用于发送所述第一消息的时域资源的序号和/或所述终端设备可选的OCC的总数量，确定所述RA-RNTI。
可选的，若用于发送所述第一消息的频域资源的分配方式为资源交错分配方式，则用于发送所述第一消息的频域资源的序号为资源交错分配中用于发送所述第一消息的频域资源的序号。
可选的，所述发送器，还用于若所述一个或多个终端设备的标识信息中包括所述第一标识信息，则向所述网络设备发送第三消息，所述第三消息用于指示所述第一标识信息对应的终端设备随机接入成功；若所述一个或多个终端设备的标识信息中不包括所述第一标识信息，或解码所述第二消息失败，则向所述网络设备发送第四消息，以使所述网络设备根据所述第四消息向所述终端设备重发所述第二消息，所述第四消息用于指示所述第一标识信息对应的终端设备随机接入失败。
可选的，所述第一消息还包括所述前导序列的序号；或者，所述第一消息还包括所述前导序列的序号和用于发送所述前导序列的频域资源的序号。
可选的，所述前导序列的序号和所述第一标识信息在同一时频资源上发送；或者，
所述前导序列的序号、所述第一标识信息和用于发送所述前导序列的频域资源的序号均在同一时频资源上发送。
可选的，所述第一消息还包括所述网络设备的最佳下行发射波束信息。
可选的，所述第二消息还包括用于发送所述第三消息或用于发送所述第四消息的物理上行控制信道PUCCH的配置信息。
可选的，所述第一标识信息为所述终端设备的全球唯一网络标识S-TMSI。
可选的，若所述终端设备处于上行失步下行同步，则所述第一标识信息为所述终 端设备的小区无线网络临时标识C-RNTI。
可选的，所述发送器，还用于若允许发送所述第一消息的时频资源大于所述第一消息占用的时频资源，在所述允许发送所述第一消息的时频资源内的多个符号位置进行先听后说LBT，并在第一个LBT成功的符号位置上发送所述第一消息。
可选的，所述接收器，具体用于在接收到所述网络设备发送的所述RA-RNTI加扰的物理下行控制信道PDCCH后，根据所述PDCCH接收所述网络设备发送的所述第二消息。
可选的，所述处理器，用于从所述终端设备可选择的多个OCC中随机选择一个OCC，并使用选择的OCC加扰所述第一标识信息；
所述发送器，用于在随机选择的用于随机接入的时频资源上，向所述网络设备发送携带加扰后的所述第一标识信息的第一消息。
第六方面，本申请提供一种随机接入设备，包括：
接收器，用于接收终端设备发送的第一消息，所述第一消息包括采用正交覆盖码OCC加扰后的第一标识信息，所述第一消息用于所述第一标识信息对应的所述终端设备请求随机接入所述网络设备；
发送器，用于根据所述第一消息，向所述终端设备发送第二消息，所述第二消息中包括随机接入成功的一个或多个终端设备的标识信息，所述一个或多个终端设备的标识信息包括所述第一标识信息.。
可选的，所述第一消息还包括前导序列，所述设备还包括处理器；
所述处理器，用于根据所述前导序列生成时间提前量TA；
所述发送器，还用于向所述终端设备发送第二消息，所述第二消息包括所述TA。
可选的，所述前导序列与所述OCC存在映射关系，或者，用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系。
可选的，用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源相同，或者用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源之间具有预设的偏移量。
可选的，若所述前导序列与所述OCC存在映射关系，则所述接收器，具体用于盲检用于随机接入的时频资源，检测所述前导序列，并根据所述前导序列与所述OCC之间的映射关系，接收所述OCC加扰后的第一标识信息。
可选的，若用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系，则所述接收器，具体用于盲检用于随机接入的时频资源，检测到用于发送所述前导序列的频域资源，并根据所述用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源之间的映射关系，获取所述用于发送所述第一标识信息的频域资源，并在所述用于发送所述第一标识信息的频域资源上接收所述第一标识信息。
可选的，所述处理器，还用于根据加扰所述第一标识信息的OCC确定所述终端设备的随机接入无线网络临时标识RA-RNTI，并使用所述RA-RNTI加扰物理下行控制信道PDCCH；
所述发送器，具体用于在加扰后的所述PDCCH所指向的时频资源上向所述终端 设备发送所述第二消息。
可选的，所述处理器，具体用于根据加扰所述第一标识信息的OCC和用于发送所述第一消息的频域资源的序号，以及用于发送所述第一消息的时域资源的序号和/或所述终端设备可选的OCC的总数量，确定所述RA-RNTI。
可选的，若用于发送所述第一消息的频域资源的分配方式为资源交错分配方式，则用于发送所述第一消息的频域资源的序号为资源交错分配中用于发送所述第一消息的频域资源的序号。
可选的，所述接收器，还用于接收所述终端设备发送的第三消息，所述第三消息用于指示所述第一标识信息对应的终端设备随机接入成功；或者，用于接收所述终端设备发送的第四消息，其中，所述第四消息用于指示所述第一标识信息对应的终端设备随机接入失败；
所述发送器，还用于根据所述第四消息向所述终端设备重发所述第二消息。
可选的，所述第一消息还包括所述前导序列的序号；或者，所述第一消息还包括所述前导序列的序号和用于发送所述前导序列的频域资源的序号。
可选的，所述前导序列的序号和所述第一标识信息在同一时频资源上发送；或者，
所述前导序列的序号、所述第一标识信息和用于发送所述前导序列的频域资源的序号均在同一时频资源上发送。
可选的，所述第一消息还包括所述网络设备的最佳下行发射波束信息。
可选的，所述第二消息还包括用于发送所述第三消息或用于发送所述第四消息的物理上行控制信道PUCCH的配置信息。
可选的，所述第一标识信息为所述终端设备的全球唯一网络标识S-TMSI。
可选的，若所述终端设备处于上行失步下行同步，则所述第一标识信息为所述终端设备的小区无线网络临时标识C-RNTI。
第七方面，一种随机接入设备，其特征在于，包括：
存储器，用于存储计算机程序；
处理器，用于执行所述计算机程序，以实现如第一方面或者第二方面所述的随机接入方法。
第八方面，本申请提供一种计算机存储介质，所述存储介质包括计算机指令，当所述指令被计算机执行时，使得所述计算机实现如上述第一方面或第二方面中任一项所述的随机接入方法。
第九面，本申请提供一种计算机程序产品，所述程序产品包括计算机程序，所述计算机程序存储在可读存储介质中，通信装置的至少一个处理器可以从所述可读存储介质读取所述计算机程序，所述至少一个处理器执行所述计算机程序使得通信装置实施第一方面或第二方面任一所述的随机接入方法。
本申请提供的随机接入方法、装置、设备及存储介质，终端设备采用OCC加扰终端设备的第一标识信息，并向网络设备发送第一消息，该第一消息中包括扰后的第一标识信息，网络设备接收到终端设备发送的第一消息后，根据该第一消息向终端设备发送第二消息，该第二消息中包括随机接入成功的一个或多个终端设备的标识信息，这样终端设备可以根据一个或多个终端设备中是否包括本终端设备的第一标识信息， 来确定本终端设备的随机接入成功或失败。即该方法通过在第一消息中包括终端设备的第一标识信息，实现两步随机接入，进而简化随机接入的流程，降低随机接入的接入时延，减小信令开销。同时，采用OCC加扰终端设备的第一标识信息，这样可以增大不同终端设备的第一标识信息不同的可能性，进而降低了随机接入过程中不同终端设备的碰撞概率，提高随机接入信道的容量。
附图说明
图1为本申请实施例提供的通信系统的示意图；
图2为本申请实施例一提供的随机接入方法的流程图；
图3为本申请实施例二提供的随机接入方法的交互流程图；
图4为本申请实施例二涉及的用于发送第一消息的资源分配示意图；
图5为本申请实施例三提供的随机接入方法的交互流程图；
图6为本申请实施例三提供的随机接入方法的流程图；
图7为本申请实施例三涉及的用于发送第一消息的资源分配示意图；
图8为本申请一实施例提供的一种随机接入设备的结构示意图；
图9为本申请一实施例提供的一种终端设备的结构示意图；
图10为本申请实施例提供的一种随机接入装置的结构示意图；
图11为本申请实施例提供的一种随机接入装置的结构示意图。
具体实施方式
图1为本申请实施例提供的通信系统的示意图，如图1所示，通信系统包括网络设备和终端设备。
以下，对本申请中的部分用语进行解释说明，以便于本领域技术人员理解：
网络设备，是无线网络中的设备，例如将终端接入到无线网络的无线接入网(radio access network，RAN)节点。目前，一些RAN节点的举例为：gNB、传输接收点(transmission reception point，TRP)、演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(base band unit，BBU)，或无线保真(wireless fidelity，Wifi)接入点(access point，AP)等。在一种网络结构中，网络设备可以包括集中单元(centralized unit，CU)节点、或分布单元(distributed unit，DU)节点、或包括CU节点和DU节点的RAN设备，在此并不限定。
终端设备：可以是无线终端设备也可以是有线终端设备，无线终端设备可以是指一种具有无线收发功能的设备，可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。所述终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR) 终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、智慧家庭(smart home)中的无线终端设备等等，在此不作限定。可以理解的是，本申请实施例中，终端设备也可以称为用户设备(user equipment，UE)。
本申请实施例中描述的技术方案可用于各种通信系统，例如2G，3G，4G，5G通信系统和下一代通信系统，例如全球移动通信系统(Global System for Mobilecommunications，GSM)，码分多址(Code Division Multiple Access，CDMA)系统，时分多址(Time Division Multiple Access，TDMA)系统，宽带码分多址(Wideband Code Division Multiple Access Wireless，WCDMA)，频分多址(Frequency Division Multiple Addressing，FDMA)系统，正交频分多址(Orthogonal Frequency-Division Multiple Access，OFDMA)系统，单载波FDMA(SC-FDMA)系统，通用分组无线业务(General Packet Radio Service，GPRS)系统，长期演进(Long Term Evolution，LTE)系统等等。
如图1所示的通信系统中，在以下5种场景下，终端设备需要随机接入网络设备：
场景1：初始无线资源控制(Radio Resource Control，RRC)连接建立，当UE从空闲态转到连接态时，UE会发起随机接入。
场景2：RRC连接重建，当无线链接失败后，UE需要重新建立RRC连接时，UE会发起随机接入。
场景3：当UE进行切换时，UE会在目标小区发起随机接入。
场景4：下行数据到达，当UE处于连接态，网络设备有下行数据需要传输给UE，却发现UE上行失步状态(网络设备侧维护一个上行定时器，如果上行定时器超时，网络设备没有收到UE的探测参考信号，则网络设备认为UE上行失步)，网络设备将控制UE发起随机接入。
场景5：上行数据到达，当UE处于连接态，UE有上行数据需要传输给网络设备，却发现自己处于上行失步状态(UE侧维护一个上行定时器，如果上行定时器超时，UE没有收到网络设备调整TA的命令，则UE认为自己上行失步)，UE将发起随机接入。
随机接入包括基于竞争的随机接入和基于非竞争的随机接入，本实施例提出的随机接入方法是针对基于竞争的随机接入过程。
已有的基于竞争的随机接入过程包括4步：终端设备向网络设备发送前导码(即为Msg1)，网络设备根据接收的前导码向终端设备发送随机接入响应(Random Access Response，RAR)(即为Msg2)，然后终端设备与网络设备进行第一次上行调度传输(即为Msg3)，最后网络设备向终端设备反馈竞争解决(即为Msg4)。即现有的基于竞争的随机接入过程较复杂，接入时间长，存在接入时延，且信令开销大。
为了解决上述技术问题，本申请实施例提出一种两步的随机接入方法，简化随机接入的流程，降低随机接入的接入时延，减小信令开销。同时，采用正交覆盖码(Orthogonal Cover Code，OCC)加扰终端设备的第一标识信息，这样可以增大不同终端设备的第一标识信息不同的可能性，进而降低了随机接入过程中不同终端设备的碰撞概率，提高了随机接入信道的容量。
图2为本申请实施例一提供的随机接入方法的流程图，如图2所示，本实施例的两步随机接入过程包括：
S201、终端设备向网络设备发送第一消息，所述第一消息包括采用正交覆盖码OCC加扰后的第一标识信息，所述第一消息用于所述第一标识信息对应的终端设备请求随机接入所述网络设备。
本实施例中，当终端设备向网络设备发起随机接入请求，即向网络设备发送第一消息时，直接在第一消息中携带终端设备的第一标识信息。而现有随机接入过程，需要经过终端设备向网络设备发送前导序列(preamble)，以及网络设备向终端设备配置临时网络标识这两个步骤后，终端设备才向网络设备发送携带终端设备的第一标识信息的msg3。由此可知，本步骤，通过在第一消息直接携带终端设备的第一标识信息可以减少随机接入的步骤，进而节省信令开销。
在一些实现方式中，终端设备的第一标识信息可以是终端设备的唯一标识，或者为终端设备的临时标识。
在另一些实现方式中，终端设备的第一标识信息可以为终端设备的全球唯一网络标识(SAE-Temporary Mobile Subscriber Identit，S-TMSI)。
在另一些实现方式中，终端设备的第一标识信息可以为终端设备的网络临时标识。例如，若终端设备处于上行失步下行同步(即上述场景4)，则第一标识信息可以为终端设备的小区无线网络临时标识(Cell Radio Network Temporary Identifier，C-RNTI)，该C-RNTI在终端设备与网络设备下行同步时确定的。
本实施例，采用正交覆盖码OCC加扰第一标识信息，这样使得加扰后的第一标识信息之间是正交的，进而提高了第一标识信息在传输过程中的抗干扰性。
同时，本实施例不同的终端设备可以选择不同的OCC来加扰自身的第一标识信息，这样可以增大加扰后的第一标识信息不同的可能性，进而降低随机接入过程中不同终端设备的碰撞概率。
例如，终端设备1的第一标识信息1和终端设备2的第一标识信息2相同，但是，终端设备1和终端设备2选择的OCC不同，这样，经过不同的OCC加扰后的第一标识信息1与第一标识信息2不同。此时，当终端设备1和终端设备2同时向网络设备发送第一消息时，网络设备可以根据第一消息中所携带的加扰后的第一标识信息1和第一标识信息2可以准确地区分出为两个不同的终端设备发起随机接入请求，进而可以为终端设备1和终端设备2分别分配上行接入资源，从而提高了第一标识信息相同的终端设备的随机接入的成功率，并增大随机接入信道的容量。
本实施例中一个终端设备可以有多个可供选择的OCC。若用于加扰第一标识信息的OCC被网络设备配置，例如网络设备在剩余最小系统信息(Remaining minimum system information，RMSI)或其它系统信息(Other system information，OSI)中进行配置，则终端设备使用网络设备指定的OCC加扰第一标识信息。
在部分实施例中，若用于加扰第一标识信息的OCC没有被网络设备配置，则上述S201可以包括S201a和S201b：
S201a、终端设备从所述终端设备可选择的多个OCC中随机选择一个OCC，并使用选择的OCC加扰所述第一标识信息。
本实施例中，终端设备对应的OCC数量和长度可以由标准给出，也可以是网络设备在RMSI或OSI中进行配置。
可选的，用于加扰第一标识信息的OCC的数量可以由发送该第一标识信息需要的符号数确定，例如，用于发送第一标识信息需要2个符号，则用于加扰该第一标识信息的OCC的数量也为2。在一种示例中这两个OCC可以为[+1，+1]和[+1，-1]，或者为[+1，+1]和[-1，+1]，或者为[-1，-1]和[-1，+1]，或者为[-1，-1]和[+1，-1]。可选的，这两个OCC还可以是其他长度的正交码。
终端设备可以在上述可选的多个OCC中随机选择一个OCC用来加扰该终端设备的第一标识信息，例如，终端设备1选择OCC[+1，-1]来加扰自身的第一标识信息，终端设备2选择OCC[+1，+1]来加扰自身的第一标识信息。这样经加扰后的各第一标识信息正交，当多个终端设备向网络设备发送第一消息时，各第一消息中携带的第一标识信息是正交的，可以提高各第一消息之间的抗干扰性。同时，可以降低多个终端设备发送第一消息时发生碰撞的概率，提高随机接入信道的容量。
S201b、终端设备在随机选择的用于随机接入的时频资源上，向所述网络设备发送携带加扰后的所述第一标识信息的第一消息。
终端设备根据S201a中的方法对第一标识信息进行加扰之后，终端设备随机选择可用于随机接入的时隙(即时域资源)和频域资源，并在该时隙和频域资源将携带加扰后的第一标识信息的第一消息发送给网络设备，实现第一消息的发送。
S202、网络设备根据所述第一消息，向所述终端设备发送第二消息，所述第二消息中包括随机接入成功的一个或多个终端设备的标识信息，所述一个或多个终端设备的标识信息包括所述第一标识信息。
本实施例中，当多个终端设备向网络设备发送随机接入请求时，网络设备在同一时间接收到多个终端设备发送的第一消息。当网络设备接收到一个或多个终端设备发送的第一消息时，表示这些一个或多个终端设备随机接入成功。网络设备解析一个或多个终端设备发送的第一消息，并解扰一个或多个第一消息中OCC加扰后的第一标识信息。接着，为解扰后的每个第一标识信息对应的终端设备分配上行接入资源。将上述分配的各上行资源和解扰的各第一标识信息携带在第二消息中发送给终端设备。
由上述可知，本实施例的第二消息中包括一个或多个随机接入成功的终端设备的标识信息。
S203、发送第一消息的终端设备接收所述网络设备发送的第二消息，并根据所述一个或多个终端设备的标识信息中是否包括所述第一标识信息，确定随机接入是否成功。
本实施例中，当终端设备发送完第一消息后，在某个时间窗内监听网络设备发送的第二消息。
若终端设备接收到网络设备发送的第二消息，则解析该第二消息，判断该第二消息中携带的一个或多个终端设备的标识信息中是否包括自己的第一标识信息，若包括，则本次随机接入成功。若第二消息中不包括本终端设备的第一标识信息，则确定本次随机接入失败。
可选的，当发送第一消息的终端设备在预设的时间内没有接收到网络设备发送的 第二消息，则该终端设备确定本次随机接入失败，终端设备可以调整上行传输功率，并使用调整后的上行传输功向网络设备再次发送第一消息。
本实施例通过在第二消息中直接携带随机接入成功的终端设备的标识信息，这样终端设备可以根据第二消息中是否包括自身的第一标识信息即可确定随机接入成功或失败，随机接入过程简单，两步即可完成。对于机器类型通信(Machine Type Communication，MTC)或超可靠低延时通信(Ultra Reliable Low Latency Communication，URLLC)场景，可以有效减少延迟，节省信令开销。
本实施例提供的随机接入过程，终端设备采用OCC加扰终端设备的第一标识信息，并向网络设备发送第一消息，该第一消息中包括扰后的第一标识信息，网络设备接收到终端设备发送的第一消息后，根据该第一消息向终端设备发送第二消息，该第二消息中包括随机接入成功的一个或多个终端设备的标识信息，这样发送第一消息的终端设备可以根据一个或多个终端设备中是否包括本终端设备的第一标识信息，来确定本终端设备的随机接入成功或失败。即本实施例通过在第一消息中包括终端设备的第一标识信息，实现两步随机接入，进而简化随机接入的流程，降低随机接入的接入时延，减小信令开销。同时，采用OCC加扰终端设备的第一标识信息，这样可以增大不同终端设备的第一标识信息不同的可能性，进而降低了随机接入过程中不同终端设备的碰撞概率，提高随机接入信道的容量。
在一些可能的实现方式中，上述S203之后，本实施例的方法还包括：
S204a、若所述一个或多个终端设备的标识信息中包括所述第一标识信息，则终端设备向所述网络设备发送第三消息，所述第三消息用于指示所述第一标识信息对应的终端设备随机接入成功。
S204b、网络设备接收发送第一消息的终端设备发送的第三消息。
或者，在其他的实现方式中，上述S203之后，本实施例的方法还包括：
S204c、若所述一个或多个终端设备的标识信息中不包括发送第一消息的终端设备的第一标识信息，或发送第一消息的终端设备解码所述第二消息失败，则发送第一消息的终端设备向所述网络设备发送第四消息，以使所述网络设备根据所述第四消息重发所述第二消息，所述第四消息用于指示所述第一标识信息对应的终端设备(即，发送第一消息的终端设备)随机接入失败。
S204d、网络设备接收发送第一消息的终端设备发送的第四消息，并根据所述第四消息重发所述第二消息。
现有的随机接入过程中，当网络设备向终端设备发送消息后，若在预设时长内网络设备没有接收到终端设备的响应消息，则网络设备可能会重新向终端设备发送上述消息。
基于上述原因，现有的随机接入方法，在实际使用时，若终端设备随机接入成功，网络设备在预设时长后又向终端设备发送第二消息，会造成随机接入资源的浪费。若终端设备随机接入失败，终端设备需要等待预设时长后，方可接收到网络设备重新发送的第二消息，会造成随机接入时延。为了解决上述问题，本实施例的终端设备在接收到网络设备发送的第二消息后，及时向网络设备发送响应消息，以降低随机接入的 时延，防止随机接入资源的浪费。
具体的，发送第一消息的终端设备接收到网络设备发送的第二消息后，解析该第二消息，判断该第二消息包括的随机接入成功的一个或多个终端设备的标识信息中是否包括本终端设备的第一标识信息。
若第二消息包括的一个或多个终端设备的标识信息中包括本终端设备的第一标识信息，则终端设备向网络设备发送第三消息(例如混合自动重传请求确认消息(Hybrid Automatic Repeat Request Acknowledgement，HARQ ACK))，该第三消息用于指示第一标识信息对应的终端设备随机接入成功。网络设备接收到该第三消息后，停止向发送第一消息的终端设备发送第二消息，可以防止随机接入资源的浪费。
由于外界因素的影响，例如电磁干扰、发射器或接收器工作不稳定等原因，使得第二消息发送失败，终端设备没有接收到第二消息，或者使得第二消息在发送、传输和接收过程中发生改变。此时，终端设备可以向网络设备发送第四消息(例如混合自动重传请求否定确认消息(Hybrid Automatic Repeat Request Acknowledgement，HARQ NACK)，以使网络设备向终端设备重发第二消息。具体是，若第二消息包括的一个或多个终端设备的标识信息中不包括本终端设备的第一标识信息，或终端设备没有接收到第二消息，则终端设备向网络设备发送第四消息，该第四消息用于指示第一标识信息对应的终端设备随机接入失败。网络设备接收到该第四消息后，重新向终端设备发送上述第二消息。这样不仅可以解决由于第二消息发送失败造成随机接入失败的问题，同时，终端设备主动向网络设备发送第四消息，以使网络设备及时重发第二消息，而不需要等待预设时长，进而有效降低随机接入的时延。
可选的，在本实施例中，若网络设备向终端设备发送预设次(例如3次)第二消息后，该第二消息包括的一个或多个终端设备的标识信息中依然不包括本终端设备的第一标识信息，则确定本终端设备随机接入失败。
在本实施例中，网络设备在接收到终端设备发送的第四消息后，如上所述，网络设备向终端设备重新发送第二消息。可选的，若网络设备在接收到终端设备发送的第四消息，以及其它终端设备发送的第三消息时，说明发送第三消息的终端设备接入成功，即第二消息的发送过程是正常的，而是发生了冲突，为了防止随机接入资源的浪费，则网络设备不会向终端设备重新发送第二消息。可选的，本实施例的第二消息还包括用于发送第三消息或用于发送第四消息的物理上行控制信道(Physical Uplink Control Channel，PUCCH)的配置信息。
在实际应用中，当多个终端设备向网络设备同时发送第三消息或第四消息时，系统配置的用于发送第三消息或第四消息的PUCCH可能无法承载所有终端设备的第三消息或第四消息。此时，本实施例的网络设备在第二消息中添加用于发送第三消息或用于发送第四消息的PUCCH配置信息，以使终端设备根据第二消息中PUCCH配置信息，在PUCCH配置信息指示的资源上发送第三消息或第四消息，防止第三消息或第四消息发送时发生拥堵，保证网络设备可以接收到所有随机接入终端设备的第三消息或第四消息。
其中，上述PUCCH配置信息可以包括时域位置、频域位置和使用的循环移位(cyclic shift)值中的至少一个。
图3为本申请实施例二提供的随机接入方法的交互流程图，在上述实施例的基础上，如图3所示，本实施例的随机接入方法可以包括：
S301、终端设备向网络设备发送第一消息，所述第一消息包括采用OCC加扰后的第一标识信息。
S302、网络设备使用终端设备的RA-RNTI加扰PDCCH，并在加扰后的所述PDCCH所指向的时频资源上向所述终端设备发送所述第二消息，其中，所述终端设备的RA-RNTI采用加扰所述第一标识信息的OCC确定。
S303、发送第一消息的终端设备根据自身的RA-RNTI在接收到所述网络设备发送的所述RA-RNTI加扰的PDCCH后，根据所述PDCCH接收所述网络设备发送的所述第二消息。
在一些实现方式中，终端设备向网络设备发送第一消息，并在接收第二消息之前，采用加扰所述第一标识信息的OCC确定自身的随机接入无线网络临时标识(Random Access-Radio Network Temporary Identifier，RA-RNTI)。
同时，网络设备在每个用于随机接入的时隙内的每个频域资源(例如每个interlace)上利用所有可能的OCC进行第一消息的盲检。当检测到第一消息时，网络设备可以获得用于加扰第一消息的OCC。网络设备采用加扰第一消息的OCC确定发送第一消息的终端设备的RA-RNTI。接着，使用该RA-RNTI加扰物理下行控制信道(Physical Downlink Control Channel，PDCCH)后，并在加扰后的PDCCH所指示的用于发送第二消息的时频资源上，向发送第一消息的终端设备发送第二消息。其中，PDCCH携带有RA-RNTI。
发送第一消息的终端设备，根据自身的RA-RNTI，在某个时间窗内持续监听网络设备发送的使用RA-RNTI加扰后的PDCCH。若该终端设备在该时间窗内检测到自身RA-RNTI加扰的PDCCH后，会去解码该PDCCH所指示的时频资源上承载的第二消息，进而实现对第二消息的准确接收。
其中，终端设备和网络设备确定RA-RNTI的过程相同，下面以终端设备确定RA-RNTI为例进行说明。
现有的随机接入方法，采用公式(1)来确定终端设备的RA-RNTI：
RA-RNTI＝1+t_id+10*f_id  (1)
其中t_id(0≤t_id<10)是随机接入时隙的子帧号，f_id(0≤f_id<6)是随机接入时隙的频域编号。
由上述公式(1)可知，当不同的终端设备随机选择的t_id和f_id相同时，则不同终端设备的RA-RNTI相同，这样会造成RA-RNTI的碰撞。在后续接收第二消息时，终端设备无法准确接收到自身RA-RNTI对应的第二消息，造成随机接入失败。
为了降低RA-RNTI的碰撞概率，本实施例的终端设备的RA-RNTI采用加扰第一标识信息的OCC来确定，使得RA-RNTI随着OCC的不同而发生变化。
可选的，本实施例终端设备的RA-RNTI采用OCC的数量和/或用于加扰第一标识的OCC的编号来确定。
例如，可供终端设备选择的OCC有两个，分别为[+1，+1]和[+1，-1]，其中OCC[+1， +1]的编号为Idx OCC＝0，OCC[+1，+1]的编号为Idx OCC＝1。假设终端设备选择OCC[+1，-1]来加扰本终端设备的第一标识信息。此时，可以采用终端设备可选的OCC的总数量(例如2)来确定本终端设备的RA-RNTI。或者，采用用于加扰第一标识信息的OCC的编号(例如1)来确定本终端设备的RA-RNTI。或者，采用终端设备可选的OCC的总数量，以及用于加扰第一标识信息的OCC的编号来确定本终端设备的RA-RNTI。
本实施例中，由于不同终端设备可选择的OCC的总数量可能不同，以及终端设备从多个OCC中所选择的用于加扰第一标识信息的OCC的编号也可能不同。这样可以增大不同终端设备根据不同的OCC确定的RA-RNTI不同的可能性，进而降低了RA-RNTI的碰撞概率。
在一些实现方式中，终端设备的RA-RNTI可以采用加扰第一标识信息的OCC以及用于发送第一消息的频域资源来确定。
例如，采用用于加扰第一标识信息的OCC的编号，以及用于发送第一消息的频域资源，来确定终端设备的RA-RNTI。如公式(2)所示，其中公式(2)只是一种示例，本实施例的实现方式不限定于公式(2)：
RA-RNTI＝1+10*(f_id+Idx OCC)  (2)
其中，f_id是用于发送第一消息的频域资源的序号(即随机接入时隙的子帧号)，Idx OCC是终端设备选择的用于加扰第一标识信息的OCC的编号。
或者，采用终端设备可选的OCC的总数量，以及用于发送第一消息的频域资源，来确定终端设备的RA-RNTI。如公式(3)所示，其中公式(3)只是一种示例，本实施例的实现方式不限定于公式(3)：
RA-RNTI＝1+10*(N OCC*f_id)  (3)
其中，N OCC是终端设备可选的OCC的总数量。
这样，采用OCC以及用于发送第一消息的频域资源来确定RA-RNTI，可以进一步降低RA-RNTI的碰撞概率。例如，终端设备1与终端设备2选择的用于加扰各自第一标识信息的OCC相同，但是终端设备1和终端设备2选择的用于发送第一消息的频域资源不同，因此，根据公式(2)得到的终端设备1和终端设备2的RA-RNTI不同，可以防止两者的RA-RNTI的碰撞。或者，终端设备1与终端设备2可选的OCC相同，但是终端设备1和终端设备2选择的用于发送第一消息的频域资源不同，因此，根据公式(3)得到的终端设备1和终端设备2的RA-RNTI不同，可以防止两者的RA-RNTI的碰撞。
在一些可能的实现方式中，上述终端设备的RA-RNTI可以采用加扰所述第一标识信息的OCC和用于发送所述第一消息的频域资源的序号，以及用于发送所述第一消息的时域资源的序号和/或所述终端设备可选的OCC的总数量来确定，其中，所述终端设备可选的OCC的总数量与发送所述第一消息的时域资源所包括的符号数相同。
其中，所述终端可选的OCC的总数量大于或等于发送所述第一消息的时域资源所包括的符号数。
在一种示例中，采用加扰所述第一标识信息的OCC的编号、用于发送所述第一消息的频域资源的序号，以及用于发送所述第一消息的时域资源的序号，确定终端设备的RA-RNTI。例如公式(4)所示，其中公式(4)只是一种示例，本实施例的实现方 式不限定于公式(4)：
RA-RNTI＝1+t_id+10*(f_id+Idx OCC)  (4)
其中，t_id是用于发送所述第一消息的时域资源的序号。
在另一种示例中，采用加扰所述第一标识信息的OCC的编号、用于发送第一消息的频域资源的序号，以及终端设备可选的OCC的总数量，确定终端设备RA-RNTI。例如公式(5)所示，其中公式(5)只是一种示例，本实施例的实现方式不限定于公式(5)：
RA-RNTI＝1+10*(N OCC*f_id+Idx OCC)  (5)
在再一种示例中，采用加扰所述第一标识信息的OCC的编号、用于发送第一消息的频域资源的序号，以及用于发送第一消息的时域资源的序号和终端设备可选的OCC的总数量，确定所述RA-RNTI。例如公式(6)所示，其中公式(6)只是一种示例，本实施例的实现方式不限定于公式(6)：
RA-RNTI＝1+t_id+10*(N OCC*f_id+Idx OCC)  (6)
本实施例，不同的终端设备选择的发送第一消息的时频资源和OCC相同的概率大大降低，这样根据OCC的编号和用于发送第一消息的频域资源的序号，以及用于发送第一消息的时域资源的序号和/或终端设备可选的OCC的总数量确定RA-RNTI，可以有效降低RA-RNTI的碰撞概率。
可选的，在本实施例中，若用于发送所述第一消息的频域资源的分配方式为资源交错分配方式，则用于发送所述第一消息的频域资源的序号为资源交错分配中用于发送所述第一消息的频域资源的序号。
例如，若本实施例用于传输第一消息的频段为非授权频段，而非授权频段进行数据传输时，对传输带宽与信道带宽比值，以及传输功率限制(每MHz允许的最大功率)均有要求。为了获得更大的传输功率以及满足传输带宽要求，终端设备会使用资源交错(interlace)分配方式进行上行传输。如图4所示，对20MHz信道带宽而言，包含了106个资源块((Resource Block，RB)。取其中的100个RB分成10份，每一份作为一个interlace。一个interlace是由间隔分布在整个传输带宽上的一定数量的RB组成，对于分配给一个终端设备的RB而言，其各个RB之间并非是连续的，而具有相同或者不同的间隔。换句话说，分配给一个终端设备的interlace中，各个RB的分布可以是等间隔均匀分布，或者非等间隔分布。
若interlace中RB是等间隔均匀分配，则每个interlace包含10个RB。终端设备可以使用1个或多个interlace进行上行传输(及用于发送第一消息)。例如，终端设备选择interlace 0发送第一消息，则它在RB 0、10、20、…、90上进行传输。例如，终端设备选择interlace 5发送第一消息，则它在RB 5、15、25、…、95上进行传输。
若interlace中RB分配间隔不均匀时且满足信道占用比例要求时，也可以用于发送第一消息，例如，终端设备可以在Interlace 0上进行传输，Interlace 0包含RB 0、15、20、35、40、65、70、75、85、90。Interlace的RB映射方式可以由标准给出，也可由网络设备灵活配置并在RMSI/OSI或其它系统信息中指示。
由上述可知，若用于发送第一消息的频域资源的分配方式为interlace分配方式，则上述各公式中用于发送第一消息的频域资源的序号即为选择的用于发送第一消息的 interlace的序号，例如，终端设备选择用于发送第一消息的频域资源的序号为5，而interlace5对应频域资源为RB 5、15、25、…、95，这样，终端设备可以在频域资源RB 5、15、25、…、95上发送第一消息。
在实施例中，若用于传输第一消息的频段为非授权频段，则为了保证本终端设备和其他在非授权频段工作的设备共存，采用先听后说(Listen-Before-Talk，简称LBT)的信道竞争接入机制。而本实施例的随机接入方法包括两步，需要进行两次LBT即可，降低了LBT的次数，进一步降低了随机接入的时延。
例如，第一消息持续13个符号，映射在1个14符号时隙(slot)内的后13个符号，前1个符号用于进行LBT。
可选的，在本实施例中，若允许发送第一消息的时频资源大于第一消息占用的时频资源，则上述S201可以包括：
在所述允许发送所述第一消息的时频资源内的多个符号位置进行先听后说LBT，并在第一个LBT监听成功的符号位置上发送所述第一消息。
例如，第一消息持续13个符号，而用于发送第一消息的时间窗长度为27个符号，则终端设备可以尝试在多个符号位置发送第一消息，增加第一消息的发送概率，例如，终端设备在1符号上进行LBT，若LBT成功，在2-14符号上发送第一消息。若失败，则在2符号上进行LBT，若LBT成功，则在3-15符号上发送第一消息。依次类推，终端设备可以在1-14、2-15、….、14-27符号中的第一个LBT成功的连续13个符号的时域资源上发送第一消息，增大了第一消息的发送概率，同时提高了对第一消息的及时发送。
在一些实施方式中，本实施例还可以包括S304。
S304、发送第一消息的终端设备向网络设备发送第三消息或第四消息。
发送第一消息的终端设备根据上述步骤，接收到第二消息时，解析该第二消息，若第二消息中携带的终端设备的标识信息与本终端设备的第一标识一致，则向网络设备发送指示随机接入成功的第三消息。
若第二消息中携带的终端设备的标识信息与本终端设备的第一标识信息不一致，或发送第一消息的终端设备在上述时间窗口内没有接收到网络设备发送的第二消息，则该终端设备向网络设备发送第四消息，以使网络设备重新向该终端设备发送第二消息。其具体过程参照上述实施例的描述，在此不再赘述。
本实施例提供的随机接入方法，根据加扰所述第一标识信息的OCC来确定终端设备的RA-RNTI，由于不同的终端设备选择的OCC可能不同，这样根据OCC确定的RA-RNTI，可以增大不同终端设备的RA-RNTI不同的可能性，进而降低RA-RNTI的碰撞概率。
图4为本申请实施例三提供的随机接入方法的交互流程图，本实施例涉及的是第一信号中包括第一标识信息，不包括前导序列(Preamble)时，本实施例的随机接入过程可以包括：
S501、终端设备向网络设备发送第一消息，所述第一消息包括OCC加扰后的第一标识信息，不包括Preamble。
S502、网络设备使用所述终端设备的RA-RNTI加扰PDCCH，并在加扰后的所述PDCCH所指向的时频资源上向所述终端设备发送所述第二消息，所述RA-RNTI采用加扰所述第一标识信息的OCC确定。
S503、发送第一消息的终端设备在接收到所述网络设备发送的所述RA-RNTI加扰的PDCCH后，根据所述PDCCH接收所述网络设备发送的所述第二消息。
S504、发送第一消息的终端设备向网络设备发送第三消息或第四消息。
针对小蜂窝场景，整个Preamble的持续时间为2个符号长度。当PRACH采用15KHz子载波间隔(Sub Carrier Spacing，SCS)时，其持续时间为0.14ms。
而15KHz子载波间隔对应的循环保护前缀(Cyclic Prefix，CP)长度为144Ts，即4.68us。1公里的蜂窝小区半径会产生6.7us左右的传输时延，则上述长度为4.68us的CP可对应大约700米的小区半径。
由上述可知，当小区半径小于等于700米时，15KHz子载波间隔的CP可以消除传输时延对信号接收产生的影响。基于上述原因，假设小区不关心上行传输时间误差对接收侧的影响，则终端设备无需发送preamble用于网络设备估计该终端设备的上行时间误差。此时，终端设备在第一消息中携带终端设备的第一标识信息，无需携带preamble。这样可以节省发送第一消息的资源，同时，可以避免终端设备选择preamble时造成的时延。
需要说明的是，本实施例中第一消息只包括发送第一消息的终端设备的第一标识信息，因此，上述在计算RA-RNTI时涉及的用于发送第一消息的频域资源的序号为发送第一标识信息的频域资源的序号，用于发送第一消息的时域资源的序号为发送第一标识信息的时域资源的序号。
可选的，本实施例中，如图5所示，可以在发送第一消息的前1个或大于1个的符号上承载解调参考信号(Demodulation reference signal，DMRS)，该DMRS用于上行信道的估计。
可选的，还可以在上行信道的中间符号上承载DMRS。
本实施例提供的随机接入方法，在第一消息中只包括终端设备的第一标识信息，而不包括preamble，这样可以节省发送第一消息的资源，同时，可以避免终端设备选择preamble时造成的时延。
图6为本申请实施例三提供的随机接入方法的流程图，本实施例涉及的是第一信号中包括第一标识信息和前导序列时，本实施例的随机接入过程可以包括：
S601、终端设备向网络设备发送第一消息，所述第一消息包括前导序列和OCC加扰后的第一标识信息。
在一些应用场景中，由于信号传播需要时间，不同位置的终端设备所发送的信号抵达网络设备的时间不同，会导致不同的终端设备的信号不同步，导致正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)符号不正交而造成干扰。
为了保证上行信号抵达网卡设备时是同步的，对于不同距离的终端设备，需要采用不同的时间提前量(Timing Advance，TA)发送信息。
因此，本实施例在第一消息中包括preamble，用于网络设备评估终端设备的时间 提前量，以提高上行同步的准确性。同时，精确的上行同步有利于网络设备与终端设备间使用更高的调制与编码策略(Modulation and Coding Scheme，MCS)进行数据传输。
在一些实施方式中，preamble与所述OCC存在映射关系，这样，终端设备可随机选择preamble和OCC的其中一个，可以根据两者的映射关系，确定出另一个。例如，终端设备随机选择一个preamble，接着，根据preamble与OCC的映射关系，可以确定该preamble对应的OCC。或者，终端设备随机选择一个OCC，接着，根据preamble与OCC的映射关系，可以确定该OCC对应的preamble，进而提高了终端设备选择preamble与OCC的效率。在一种示例中，假设终端设备使用2个符号来传输Preamble，当终端设备使用Preamble 0时，其用来加扰第一标识信息的OCC例如为[+1+1]，当其使用Preamble1时，其用来加扰第一标识信息的OCC例如为[+1-1]。当终端设备发送的Preamble超过2个时，可以把所有Preamble分为2组，每组分别对应两个OCC。Preamble和OCC配置信息可以由物理广播信道(Physical Broadcast Channel，PBCH)、剩余最小系统信息(Remaining Minimum System Information，RMSI)、其它系统信息(Other System Information，OSI)、无线资源控制(Radio Resource Control，RRC)等信令配置，也可以由标准直接给出。本实施例第一消息中的preamble与OCC具有相关性，便于网络设备检测到第一消息，例如，网络设备检测到preamble，根据两种之间的映射关系，可以检测到OCC加扰后的第一标识，提高网络设备接收第一消息的效率。
在另一些实施方式中，用于发送preamble的频域资源与用于发送第一标识信息的频域资源存在映射关系。这样，终端设备随机选择用于发送preamble的频域资源后，根据用于发送preamble的频域资源与用于发送第一标识信息的频域资源存在映射关系，可以快速确定用于发送第一标识信息的频域资源，进而提高了终端设备确定用于发送preamble与用于发送第一标识信息的频域资源的效率。同时，也便于网络设备检测第一消息，例如，preamble为序列，网络设备可以先检测到preamble，接着，根据用于发送preamble的频域资源与用于发送第一标识信息的频域资源存在映射关系，快速获知用于发送第一标识信息的频域资源，并在该频域资源上接收第一标识信息，提高网络设备接收第一消息的效率。
上述preamble与所述OCC存在映射关系，或者，用于发送所述preamble的频域资源与用于发送所述第一标识信息的频域资源存在映射关系，可以由标准给出，也可以是网络设备在RMSI/OSI中进行配置。
在本实施例中，用于发送所述preamble的频域资源与用于发送所述第一标识信息的频域资源存在映射关系，可以包括两种情况：
情况1，用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源相同。即preamble和第一标识信息在同一个频域资源上进行发送。
情况2，用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源之间具有预设的偏移量。该预设的偏移量根据实际需要由网络设备配置，或者由标准给出。其中，不同的前导序列对应的频域资源和不同的第一标识信息对应的频域资源之间偏移量可以相同也可以不同。
在又一些实施方式中，本实施例的第一消息还包括前导序列的序号。这样，对于 preamble与OCC不具有映射关系的场景，当网络设备没有接收到preamble，但是接收到第一标识信息和preamble的序号时，网络设备可以根据加扰该第一标识信息的OCC和preamble的时频资源的序号(假设用于发送第一标识信息的频域资源与用于发送preamble的频域资源相同)，确定终端设备的RA-RNTI。接着，网络设备通过该RA-RNTI加扰的PDCCH指示终端设备根据preamble的序号重新发送Preamble或者Preamble以及第一标识信息。
可选的，本实施例中，前导序列的序号和第一标识信息在同一时频资源上发送，即前导序列的序号和第一标识信息均承载在物理上行共享信道(Physical Uplink Shared Channel，PUSCH)上。这样，网络设备在盲检到第一标识信息和preamble的序号中的任意一个时，即可接收到另一个，进而降低了盲检的复杂度，也降低了第一消息所占用的资源。
在再一些实施方式中，第一消息还包括前导序列的序号和用于发送前导序列的频域资源的序号(例如上述的interlace的序号)。这样，对于preamble与OCC不具有映射关系，且用于发送第一标识信息的频域资源与用于发送前导序列的频域资源不同的场景，当网络设备没有接收到preamble，但是接收到第一标识信息、preamble的序号和用于发送前导序列的频域资源的序号时，网络设备可以根据加扰该第一标识信息的OCC和用于发送preamble的频域资源的序号，确定终端设备的RA-RNTI。接着，通过该RA-RNTI加扰的PDCCH指示终端设备根据preamble的序号重新发送Preamble或者Preamble以及第一标识信息。
可选的，本实施例中，前导序列的序号、第一标识信息和用于发送前导序列的频域资源的序号均在同一时频资源上发送。即前导序列的序号、第一标识信息和用于发送前导序列的频域资源的序号均承载在PUSCH上。这样，网络设备在盲检到第一标识信息、preamble的序号和用于发送前导序列的频域资源的序号中的任意一个时，即可接收到其他两个，进而降低了网络设备盲检的复杂度，同时也可以降低第一消息所占用的资源。
本实施例对preamble的长度不做限制，例如可以是长度为139的序列，也可以是长度为120的DMRS序列，如Multefire(另一个工作在非授权频段的蜂窝标准)中的DMRS序列。
本实施例中，preamble使用的频域资源和时域资源可以由标准给出，也可以是网络设备在RMSI/OSI中进行配置。
在本实施例的一些实现方式中，若用于发送preamble的频域资源的分配方式为资源交错分配方式，则preamble的频域资源的配置方式如图7所示。
例如图7所示，假设用于发送第一消息的频域资源的分配方式为资源交错分配方式，第一消息持续时间为14个符号，preamble持续2个符号，信道宽带为20MHz，preamble的长度为139。如图7所示，preamble在频域占用1个10RB的interlace(例如interlace 5)加上额外的2个RB，每个RB包含12个子载波。这额外的2个RB可以是其它interlace(即除interlace 5之外的interlace)中的2个RB，也可以是interlace之外的6个RB中的任意2个(参照上述可知，20MHz包括106RB，其中100RB用于分成10个interlace，剩余6个RB)。本实施例中，当额外的2个RB为其余interlace 的RB时，6个interlace包括6*10*12＝720个子载波，而5组preamble包括139*5＝695，因此，6个interlace可以用于发送5组preamble。由上述可知，采用资源交错分配方式可以增加信道发送preamble的数量，进而增加信道的容量
图7中，interlace资源分配也可以是不均匀的，即interlace中相邻2个RB的间隔不一定永远相等，可以使网络设备在进行时间提前量估计时更加精确。
继续参照图7，本实施例采用资源交错分配方式，可以增加通信系统的容量。例如，在一种示例中，当10个interlace用于10组不同Preamble的传输时，每组可以包含6个不同的Preamble，每Preamble对应不同的OCC，当PUSCH持续12个符号时，可选OCC数量为12。此时通信系统可支持10*6＝60个不同的终端设备同时进行随机接入而不发生碰撞。
在另一种示例中，当10个interlace用于5组不同Preamble的传输时，每组可以包含12个不同的Preamble，每Preamble对应不同的OCC，当PUSCH持续12个符号时，可选OCC数量为12。此时通信系统可支持5*12＝60个不同的UE进行随机接入而不发生碰撞。同时，该场景中每个Preamble对应于2个interlace，因此每个Preamble可以被重复发送2次，提高Preamble发送的成功率。
需要说明的是，由上述可知，若用于发送preamble的频域资源和用于发送第一标识信息的频域资源不同时，上述计算RA-RNTI时涉及的用于发送第一消息的频域资源的序号可以是用于发送第一标识信息的频域资源的序号，也可以是用于发送preamble的频域资源的序号，还可以是两者的平均值或和值。同理，上述计算RA-RNTI时涉及的用于第一消息的时域资源的序号可以是用于发送第一标识信息的时域资源的序号，也可以是用于发送preamble的时域资源的序号。
S602、网络设备接收所述终端设备发送的第一消息。
在一种示例中，若所述前导序列与所述OCC存在映射关系，上述S602可以包括S602a和S602b，其中，
S602a、网络设备盲检用于随机接入的时频资源，检测到前导序列；
S602b、网络设备根据检测到的前导序列与OCC之间的映射关系，接收所述OCC加扰后的第一标识信息。
具体的，由于preamble为序列，容易被网络设备检测到，网络设备检测到preamble后，例如为preamble1，而preamble1与OCC1具有映射关系，这样，网络设备可以确定用于加扰第一标识信息的OCC为OCC1。网络设备在用于随机接入的时频资源上，使用OCC1进行盲检，可以接收到终端设备发送的第一标识信息，进而降低了网络设备盲检第一标识信息时的复杂度，实现对第一标识信息的快速检测，进一步降低随机接入的时延。
在另一示例中，若用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系，上述S602可以包括S602c和S602d，其中，
S602c、网络设备盲检用于随机接入的时频资源，检测到用于发送所述前导序列的频域资源；
S602d、网络设备根据所述用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源之间的映射关系，获取所述用于发送所述第一标识信息的频域资 源，并在所述用于发送所述第一标识信息的频域资源上接收所述第一标识信息。
具体的，网络设备检测到preamble后，可以获得用于发送该preamble的频域资源，这样，网络设备根据用于发送preamble的频域资源与用于发送第一标识信息的频域资源之间的映射关系，可以获得用于发送第一标识信息的频域资源。网络设备在该用于发送第一标识信息的频域资源上，接收第一标识信息，进而降低了网络设备盲检第一标识信息时的复杂度，实现对第一标识信息的快速接收，进一步降低随机接入的时延。
本实施例中，网络设备接收第一消息的结果以及后续动作包括以下几种情况：
第一种情况，当网络设备没有接收到第一消息中的preamble和第一标识信息时，则此次随机接入失败，终端设备会在下一个可用随机接入信道(Random Access CHannel，RACH)资源窗口内发送重新发送Preamble和加扰后的第一标识信息。
第二种情况，当网络设备接收到第一消息中的preamble和第一标识信息时，则网络设备在随机接入响应消息(Random Access Response，RAR)窗内发送第二消息对终端设备进行回复。
第三种情况，当网络设备成功接收终端设备发送的Preamble，但是第一标识信息解码失败时，网络设备可以根据Preamble与OCC的映射关系，获得用于加扰第一标识信息的OCC，并根据该OCC和Preamble的时频资源的序号，计算终端设备的RA-RNTI。网络设备可通过该RA-RNTI加扰的PDCCH来指示终端设备重新发送第一标识信息，即在PDCCH指示的PDSCH的媒体接入控制控制元素(Medium Access Aontrol Aontrol Element，MAC CE)中携带用于发送第一标识信息的频域资源的序号(例如用于发送第一标识信息的interlace的序号)，时域资源，可选的还可以携带用于加扰该第一标识信息的OCC的信息。
第四种情况，当网络设备成功接收终端设备发送的第一标识信息，但是Preamble解码失败时，包括：
若Preamble与OCC之间具有映射关系，则网络设备获取加扰第一标识信息使用的OCC，并根据Preamble与OCC的映射关系，获得该OCC对应的Preamble的序号，并根据该OCC和Preamble的时频资源的序号，计算出发送第一消息的终端设备的RA-RNTI。网络设备可通过该RA-RNTI加扰的PDCCH来指示终端设备重新发送Preamble或者Preamble以及第一标识信息，即在PDCCH指示的PDSCH的MAC CE中携带用于发送Preamble的频域资源的序号(例如用于发送Preamble的interlace的序号)，时域资源和OCC对应的Preamble的序号。
若Preamble与OCC之间不具有映射关系，第一消息中包括Preamble的序号，且用于发送第一标识信息的频域资源与用于发送preamble的频域资源相同时，则网络设备可以根据加扰该第一标识信息的OCC和preamble的时频资源的序号，确定终端设备的RA-RNTI。接着，网络设备通过该RA-RNTI加扰的PDCCH指示终端设备重新发送Preamble或者Preamble以及第一标识信息，即在PDCCH指示的PDSCH的MAC CE中携带用于发送Preamble的频域资源的序号，时域资源和Preamble的序号。
需要说明的是，上述情况均针对的是用于发送第一标识信息的频域资源与用于发送preamble的频域资源相同的场景。
若Preamble与OCC之间不具有映射关系，第一消息中包括Preamble的序号和用 于发送前导序列的频域资源的序号，且用于发送第一标识信息的频域资源与用于发送preamble的频域资源不相同时，网络设备可以根据加扰该第一标识信息的OCC和用于发送preamble的频域资源的序号，确定终端设备的RA-RNTI。接着，通过该RA-RNTI加扰的PDCCH指示终端设备重新发送Preamble或者Preamble以及第一标识信息，即在PDCCH指示的PDSCH的MAC CE中携带用于发送Preamble的频域资源的序号、时域资源和Preamble的序号。
S603、网络设备使用所述终端设备的RA-RNTI加扰PDCCH，并在加扰后的所述PDCCH所指向的时频资源上向所述终端设备发送所述第二消息，所述第二消息包括所述TA，所述RA-RNTI采用加扰所述第一标识信息的OCC确定。
本实施例的第二消息中不仅包括随机接入成功的一个或多个终端设备的标识信息，还包括上述步骤获得的TA。
本步骤中，网络设备根据前导序列生成TA的方法与已有方法相同，本实施例在此不再赘述。
本实施例中，网络设备为终端设备生成TA，将该TA携带在第二消息中发送给终端设备，这样终端设备在下次向网络设备发送消息时，根据该TA向网络设备发送消息，进而实现上行同步。
S604、发送第一消息的终端设备在接收到所述网络设备发送的所述RA-RNTI加扰的PDCCH后，根据所述PDCCH接收所述网络设备发送的所述第二消息。
S605、发送第一消息的终端设备向网络设备发送第三消息或第四消息。
上述S604与S605的具体过程参照上述实施例的描述，在此不再赘述。
本实施例提供的随机接入方法，在第一消息中包括终端设备的第一标识信息和preamble，这样使得网络设备为终端设备生成TA，以使终端设备根据TA向网络设备发送消息，提高了各终端设备的上行同步的精度。
在一些实现方式中，本实施例的第一消息还包括网络设备的最佳下行发射波束信息。
在本一些实施方式中，如本实施例的通信系统为高频系统时，则本实施例的第一消息中还可以携带网络设备的最佳下行发射波束信息，以使网络设备在最佳下行发射波束上向终端设备发送第二消息，可以提高第二消息的发送效率。
可选的，上述网络设备的最佳下行发射波束信息可以是网络设备的最佳下行发射波束的序号。
在一些实施方式中，本实施例的第一消息还包括网络设备的至少一个下行发射波束信息。
即本实施例中，第一消息中包括网络设备的至少一个下行发射波束信息，这样，网络设备可以上述至少一个下行发射波束中选择一个下行发射波束用来发送第二消息。
可选的，上述至少一个下行发射波束信息为至少一个下行发射波束的各序号。
可以理解的是，上述各个实施例中，由终端设备实现的操作和步骤也可以由可用于终端设备的部件(例如芯片或者电路)实现，由网络设备实现的操作和步骤也可以由可用于网络设备的部件(例如芯片或者电路)实现，本申请实施例对此不作限定。
图8为本申请一实施例提供的一种随机接入设备的结构示意图。如图8所示，本实施例所述的随机接入设备900可以是前述方法实施例中提到的终端设备(或者可用于终端设备的部件)或者网络设备(或者可用于网络设备的部件)。随机接入设备可用于实现上述方法实施例中描述的对应于终端设备或者网络设备的方法，具体参见上述方法实施例中的说明。
所述随机接入设备900可以包括一个或多个处理器901，所述处理器901也可以称为处理单元，可以实现一定的控制或者处理功能。所述处理器901可以是通用处理器或者专用处理器等。例如可以是基带处理器、或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对通信装置进行控制，执行软件程序，处理软件程序的数据。
在一种可选的设计中，处理器901也可以存有指令903或者数据(例如中间数据)。其中，所述指令903可以被所述处理器运行，使得所述随机接入设备900执行上述方法实施例中描述的对应于终端设备或者网络设备的方法。
在又一种可能的设计中，随机接入设备900可以包括电路，所述电路可以实现前述方法实施例中发送或接收或者通信的功能。
可选的，所述随机接入设备900中可以包括一个或多个存储器902，其上可以存有指令904，所述指令可在所述处理器901上被运行，使得所述随机接入设备900执行上述方法实施例中描述的方法。
可选的，所述存储器902中也可以是存储有数据。所述处理器901和存储器902可以单独设置，也可以集成在一起。
可选的，所述随机接入设备900还可以包括接收器905和发送器906，其中，接收器905和发送器906可以单独设置，也可以集成在一起。所述处理器901可以称为处理单元，对随机接入装置(终端设备或者网络设备)进行控制。所述接收器905可以称为接收单元、接收机、接收电路、或者接收器等，用于实现随机接入设备的接收功能。所述发送器906可以称为发送单元、发送机、发送电路、或者发送器等，用于实现随机接入设备的发送功能。
在一个设计中，若该随机接入设备900用于实现对应于上述各实施例中终端设备的操作时，例如，可以由发送器906向网络设备发送第一消息，所述第一消息包括采用正交覆盖码OCC加扰后的第一标识信息，所述第一消息用于所述第一标识信息对应的终端设备请求随机接入所述网络设备；接收器905接收所述网络设备发送的第二消息，所述第二消息中包括随机接入成功的一个或多个终端设备的标识信息；并根据所述一个或多个终端设备的标识信息中是否包括所述第一标识信息，确定随机接入是否成功。
可选的，所述终端设备的RA-RNTI采用加扰所述第一标识信息的OCC确定。
其中，上述发送器906、接收器905和处理器901的具体实现过程可以参见上述各实施例的相关描述，此处不再赘述。
另一个设计中，若该随机接入设备用于实现对应于上述各实施例中网络设备的操作时，例如接收器用于接收终端设备发送的第一消息，发送器用于根据第一消息，向 终端设备发送第二消息。其中，所述第一消息包括采用正交覆盖码OCC加扰后的第一标识信息，所述第一消息用于所述第一标识信息对应的所述终端设备请求随机接入所述网络设备；所述第二消息中包括随机接入成功的一个或多个终端设备的标识信息，所述一个或多个终端设备的标识信息包括所述第一标识信息。
可选的，上述所述发送器，具体用于使用所述终端设备的随机接入无线网络临时标识RA-RNTI加扰物理下行控制信道PDCCH，并在加扰后的所述PDCCH所指向的时频资源上向所述终端设备发送所述第二消息，其中，所述RA-RNTI采用加扰所述第一标识信息的OCC确定。
其中，上述发送器906、接收器905和处理器901的具体实现过程可以参见上述的各实施例中网络设备的相关描述，此处不再赘述。
本申请中描述的处理器901、接收器905、发送器906可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路(radio frequency integrated circuit，RFIC)、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。该处理器901、接收器905、发送器906也可以用各种1C工艺技术来制造，例如互补金属氧化物半导体(complementary metal oxide semiconductor，CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor，NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor，PMOS)、双极结型晶体管(Bipolar Junction Transistor，BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
虽然在以上的实施例描述中，随机接入设备900以终端设备或者网络设备为例来描述，但本申请中描述的随机接入设备的范围并不限于上述终端设备或上述网络设备，而且随机接入设备的结构可以不受图8的限制。随机接入设备900可以是独立的设备或者可以是较大设备的一部分。例如所述设备可以是：
(1)独立的集成电路IC，或芯片，或，芯片系统或子系统；
(2)具有一个或多个IC的集合，可选的，该IC集合也可以包括用于存储数据和/或指令的存储部件；
(3)ASIC，例如调制解调器(MSM)；
(4)可嵌入在其他设备内的模块；
(5)接收机、终端、蜂窝电话、无线设备、手持机、移动单元，网络设备等等；
(6)其他等等。
图9为本申请一实施例提供的一种终端设备的结构示意图。该终端设备可适用于本申请上述各实施例中所述的终端设备。为了便于说明，图9仅示出了终端设备的主要部件。如图9所示，终端设备1000包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对整个终端进行控制，执行软件程序，处理软件程序的数据。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
当终端开机后，处理器可以读取存储单元中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解，为了便于说明，图9仅示出了一个存储器和处理器。在实际的终端设备中，可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等，本申请实施例对此不做限制。
作为一种可选的实现方式，处理器可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端进行控制，执行软件程序，处理软件程序的数据。图9中的处理器集成了基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端设备可以包括多个基带处理器以适应不同的网络制式，终端可以包括多个中央处理器以增强其处理能力，终端设备的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。
在一个例子中，可以将具有收发功能的天线和控制电路视为终端设备1000的收发器1001，如图9所示，终端设备1000包括收发器1001和处理器1002。可选的，可以将收发器1001用于实现接收功能的器件视为接收器，将收发器1001用于实现发送功能的器件视为发送器，即收发器1001包括接收器和发送器，示例性的，接收器也可以称为接收机、接收器、接收电路等，发送器可以称为发射机、发射器或者发射电路等。
图10为本申请实施例提供的一种随机接入装置的结构示意图，该随机接入装置可以是终端设备，也可以是终端设备的部件(例如，集成电路，芯片等等)，或者可以是其他通信模块，用于实现上述方法实施例中对应于终端设备的操作或者步骤，该随机接入装置700可以包括：发送模块701、接收模块702和处理模块703。
发送模块701，用于向网络设备发送第一消息，所述第一消息包括采用正交覆盖码OCC加扰后的第一标识信息，所述第一消息用于所述第一标识信息对应的终端设备请求随机接入所述网络设备；
接收模块702，用于接收所述网络设备发送的第二消息，所述第二消息中包括随机接入成功的一个或多个终端设备的标识信息；
处理模块703，用于根据所述一个或多个终端设备的标识信息中是否包括所述第一标识信息，确定随机接入是否成功。
本实施例的随机接入装置，可以用于执行上述各方法实施例中终端设备的技术方案，其实现原理和技术效果类似，此处不再赘述。
在一些实施方式中，本实施例的第一消息还包括前导序列。
可选的，所述前导序列与所述OCC存在映射关系，或者，用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系。
可选的，用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源相同，或者用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源之间具有预设的偏移量。
在另一些实施方式中，所述终端设备的随机接入无线网络临时标识RA-RNTI采用加扰所述第一标识信息的OCC确定。
可选的，所述RA-RNTI采用加扰所述第一标识信息的OCC和用于发送所述第一消息的频域资源的序号，以及用于发送所述第一消息的时域资源的序号和/或所述终端设备可选的OCC的总数量确定。
可选的，若用于发送所述第一消息的频域资源的分配方式为资源交错分配方式，则用于发送所述第一消息的频域资源的序号为资源交错分配中用于发送所述第一消息的频域资源的序号。
可选的，所述发送模块，还用于若所述一个或多个终端设备的标识信息中包括所述第一标识信息，则向所述网络设备发送第三消息，所述第三消息用于指示所述第一标识信息对应的终端设备随机接入成功；若所述一个或多个终端设备的标识信息中不包括所述第一标识信息，或解码所述第二消息失败，则向所述网络设备发送第四消息，以使所述网络设备根据所述第四消息向所述终端设备重发所述第二消息，所述第四消息用于指示所述第一标识信息对应的终端设备随机接入失败。
可选的，所述第一消息还包括所述前导序列的序号；或者，所述第一消息还包括所述前导序列的序号和用于发送所述前导序列的频域资源的序号。
可选的，所述前导序列的序号和所述第一标识信息在同一时频资源上发送；或者，
所述前导序列的序号、所述第一标识信息和用于发送所述前导序列的频域资源的序号均在同一时频资源上发送。
可选的，所述第一消息还包括所述网络设备的最佳下行发射波束信息。
可选的，所述第二消息还包括用于发送所述第三消息或用于发送所述第四消息的物理上行控制信道PUCCH的配置信息。
可选的，所述第一标识信息为所述终端设备的全球唯一网络标识S-TMSI。
可选的，若所述终端设备处于上行失步下行同步，则所述第一标识信息为所述终端设备的小区无线网络临时标识C-RNTI。
可选的，所述发送模块701，还用于若允许发送所述第一消息的时频资源大于所述第一消息占用的时频资源，在所述允许发送所述第一消息的时频资源内的多个符号位置进行先听后说LBT，并在第一个LBT成功的符号位置上发送所述第一消息。
可选的，所述接收模块702，具体用于在接收到所述网络设备发送的所述RA-RNTI加扰的物理下行控制信道PDCCH后，根据所述PDCCH接收所述网络设备发送的所述第二消息。
可选的，所述处理模块703，还用于从所述终端设备可选择的多个OCC中随机选择一个OCC，并使用选择的OCC加扰所述第一标识信息；
所述发送模块701，用于在随机选择的用于随机接入的时频资源上，向所述网络设备发送携带加扰后的所述第一标识信息的第一消息。
可选的，所述第二消息还包括时间提前量TA。
本实施例的随机接入装置，可以用于执行上述各方法实施例中终端设备的技术方案，其实现原理和技术效果类似，此处不再赘述。
图11为本申请实施例提供的一种随机接入装置的结构示意图，该随机接入装置可以是网络设备，也可以是网络设备的部件(例如，集成电路，芯片等等)，或者可以是其他通信模块，用于实现上述方法实施例中对应于网络设备的操作，该随机接入装置800可以包括：收发模块801和发送模块802。
接收模块801，用于接收终端设备发送的第一消息，所述第一消息包括采用正交覆盖码OCC加扰后的第一标识信息，所述第一消息用于所述第一标识信息对应的所述终端设备请求随机接入所述网络设备；
发送模块802，用于根据所述第一消息，向所述终端设备发送第二消息，所述第二消息中包括随机接入成功的一个或多个终端设备的标识信息，所述一个或多个终端设备的标识信息包括所述第一标识信息。
本实施例的随机接入装置，可以用于执行上述各方法实施例中网络设备的技术方案，其实现原理和技术效果类似，此处不再赘述。
在一些实施方式中，所述第一消息还包括前导序列。
可选的，所述前导序列与所述OCC存在映射关系，或者，用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系。
可选的，用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源相同，或者用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源之间具有预设的偏移量。
可选的，若所述前导序列与所述OCC存在映射关系，则所述接收模块801，具体用于盲检用于随机接入的时频资源，检测所述前导序列，并根据所述前导序列与所述OCC之间的映射关系，接收所述OCC加扰后的第一标识信息。
可选的，若用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系，则所述接收模块801，具体用于盲检用于随机接入的时频资源，检测到用于发送所述前导序列的频域资源，并根据所述用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源之间的映射关系，获取所述用于发送所述第一标识信息的频域资源，并在所述用于发送所述第一标识信息的频域资源上接收所述第一标识信息。
可选的，所述发送模块802，具体用于使用所述终端设备的随机接入无线网络临时标识RA-RNTI加扰物理下行控制信道PDCCH，并在加扰后的所述PDCCH所指向的时频资源上向所述终端设备发送所述第二消息，其中，所述RA-RNTI采用加扰所述第一标识信息的OCC确定。
可选的，所述RA-RNTI采用加扰所述第一标识信息的OCC和用于发送所述第一 消息的频域资源的序号，以及用于发送所述第一消息的时域资源的序号和/或所述终端设备可选的OCC的总数量确定。
可选的，若用于发送所述第一消息的频域资源的分配方式为资源交错分配方式，则用于发送所述第一消息的频域资源的序号为资源交错分配中用于发送所述第一消息的频域资源的序号。
可选的，所述接收模块801，还用于接收所述终端设备发送的第三消息，所述第三消息用于指示所述第一标识信息对应的终端设备随机接入成功；或者，用于接收所述终端设备发送的第四消息，其中，所述第四消息用于指示所述第一标识信息对应的终端设备随机接入失败；
所述发送模块802，还用于根据所述第四消息向所述终端设备重发所述第二消息。
可选的，所述第一消息还包括所述前导序列的序号；或者，所述第一消息还包括所述前导序列的序号和用于发送所述前导序列的频域资源的序号。
可选的，所述前导序列的序号和所述第一标识信息在同一时频资源上发送；或者，
所述前导序列的序号、所述第一标识信息和用于发送所述前导序列的频域资源的序号均在同一时频资源上发送。
可选的，所述第一消息还包括所述网络设备的最佳下行发射波束信息。
可选的，所述第二消息还包括用于发送所述第三消息或用于发送所述第四消息的物理上行控制信道PUCCH的配置信息。
可选的，所述第一标识信息为所述终端设备的全球唯一网络标识S-TMSI。
可选的，若所述终端设备处于上行失步下行同步，则所述第一标识信息为所述终端设备的小区无线网络临时标识C-RNTI。
可选的，所述第二消息还包括前导序列生成时间提前量TA。
本实施例的随机接入装置，可以用于执行上述各方法实施例中网络设备的技术方案，其实现原理和技术效果类似，此处不再赘述。
需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。在本申请的实施例中的各功能模块可以集成在一个处理模块中，也可以是各个模块单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。
所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
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程序指令时，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(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，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。

Claims (39)

  1. 一种随机接入方法，其特征在于，包括：
    向网络设备发送第一消息，所述第一消息包括采用正交覆盖码OCC加扰后的第一标识信息，所述第一消息用于所述第一标识信息对应的终端设备请求随机接入所述网络设备；
    接收所述网络设备发送的第二消息，所述第二消息中包括随机接入成功的一个或多个终端设备的标识信息；并根据所述一个或多个终端设备的标识信息中是否包括所述第一标识信息，确定随机接入是否成功。
  2. 根据权利要求1所述的方法，其特征在于，所述第一消息还包括前导序列。
  3. 根据权利要求2所述的方法，其特征在于，所述前导序列与所述OCC存在映射关系，或者，用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系。
  4. 根据权利要求3所述的方法，其特征在于，用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源相同，或者用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源之间具有预设的偏移量。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，所述终端设备的随机接入无线网络临时标识RA-RNTI采用加扰所述第一标识信息的OCC确定。
  6. 根据权利要求5所述的方法，其特征在于，所述RA-RNTI采用加扰所述第一标识信息的OCC和用于发送所述第一消息的频域资源的序号，以及用于发送所述第一消息的时域资源的序号和/或所述终端设备可选的OCC的总数量确定。
  7. 根据权利要求5所述的方法，其特征在于，若用于发送所述第一消息的频域资源的分配方式为资源交错分配方式，则用于发送所述第一消息的频域资源的序号为资源交错分配中用于发送所述第一消息的频域资源的序号。
  8. 根据权利要求1-4任一项所述的方法，其特征在于，所述接收所述网络设备发送的第二消息之后，所述方法还包括：
    若所述一个或多个终端设备的标识信息中包括所述第一标识信息，则向所述网络设备发送第三消息，所述第三消息用于指示所述第一标识信息对应的终端设备随机接入成功；
    若所述一个或多个终端设备的标识信息中不包括发送所述第一消息的终端设备的第一标识信息，或解码所述第二消息失败，则向所述网络设备发送第四消息，以使所述网络设备根据所述第四消息向所述终端设备重发所述第二消息，所述第四消息用于指示所述第一标识信息对应的终端设备随机接入失败。
  9. 根据权利要求2所述的方法，其特征在于，所述第一消息还包括所述前导序列的序号；或者，所述第一消息还包括所述前导序列的序号和用于发送所述前导序列的频域资源的序号。
  10. 根据权利要求9所述的方法，其特征在于，所述前导序列的序号和所述第一标识信息在同一时频资源上发送；或者，
    所述前导序列的序号、所述第一标识信息和用于发送所述前导序列的频域资源的 序号均在同一时频资源上发送。
  11. 根据权利要求1所述的方法，其特征在于，所述第一消息还包括所述网络设备的最佳下行发射波束信息。
  12. 根据权利要求8所述的方法，其特征在于，所述第二消息还包括用于发送所述第三消息或用于发送所述第四消息的物理上行控制信道PUCCH的配置信息。
  13. 根据权利要求1所述的方法，其特征在于，所述第一标识信息为所述终端设备的全球唯一网络标识S-TMSI。
  14. 根据权利要求1所述的方法，其特征在于，若所述终端设备处于上行失步下行同步，则所述第一标识信息为所述终端设备的小区无线网络临时标识C-RNTI。
  15. 根据权利要求1所述的方法，其特征在于，若允许发送所述第一消息的时频资源大于所述第一消息占用的时频资源，则所述向网络设备发送第一消息，包括：
    在所述允许发送所述第一消息的时频资源内的多个符号位置进行先听后说LBT，并在第一个LBT成功的符号位置上发送所述第一消息。
  16. 根据权利要求5所述的方法，其特征在于，所述接收所述网络设备发送的第二消息，包括：
    在接收到所述网络设备发送的所述RA-RNTI加扰的物理下行控制信道PDCCH后，根据所述PDCCH接收所述网络设备发送的所述第二消息。
  17. 根据权利要求1所述的方法，其特征在于，所述向网络设备发送第一消息，包括：
    从所述终端设备可选择的多个OCC中随机选择一个OCC，并使用选择的OCC加扰所述第一标识信息；
    在随机选择的用于随机接入的时频资源上，向所述网络设备发送携带加扰后的所述第一标识信息的第一消息。
  18. 根据权利要求2所述的方法，其特征在于，所述第二消息还包括时间提前量TA。
  19. 一种随机接入方法，其特征在于，包括：
    接收终端设备发送的第一消息，所述第一消息包括采用正交覆盖码OCC加扰后的第一标识信息，所述第一消息用于所述第一标识信息对应的所述终端设备请求随机接入所述网络设备；
    根据所述第一消息，向所述终端设备发送第二消息，所述第二消息中包括随机接入成功的一个或多个终端设备的标识信息，所述一个或多个终端设备的标识信息包括所述第一标识信息。
  20. 根据权利要求19所述的方法，其特征在于，所述第一消息还包括前导序列。
  21. 根据权利要求20所述的方法，其特征在于，所述前导序列与所述OCC存在映射关系，或者，用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系。
  22. 根据权利要求21所述的方法，其特征在于，用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源相同，或者用于发送所述前导序列的频域资源和用于发送所述第一标识信息的频域资源之间具有预设的偏移量。
  23. 根据权利要求21所述的方法，其特征在于，若所述前导序列与所述OCC存在映射关系，则所述接收所述终端设备发送的第一消息，包括：
    盲检用于随机接入的时频资源，检测所述前导序列；
    根据所述前导序列与所述OCC之间的映射关系，接收所述OCC加扰后的第一标识信息。
  24. 根据权利要求21所述的方法，其特征在于，若用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源存在映射关系，则所述接收所述终端设备发送的第一消息，包括：
    盲检用于随机接入的时频资源，检测到用于发送所述前导序列的频域资源；
    根据所述用于发送所述前导序列的频域资源与用于发送所述第一标识信息的频域资源之间的映射关系，获取所述用于发送所述第一标识信息的频域资源，并在所述用于发送所述第一标识信息的频域资源上接收所述第一标识信息。
  25. 根据权利要求19至24任一项所述的方法，其特征在于，所述向所述终端设备发送第二消息，包括：
    使用所述终端设备的随机接入无线网络临时标识RA-RNTI加扰物理下行控制信道PDCCH，并在加扰后的所述PDCCH所指向的时频资源上向所述终端设备发送所述第二消息，其中，所述RA-RNTI采用加扰所述第一标识信息的OCC确定。
  26. 根据权利要求25所述的方法，其特征在于，所述RA-RNTI采用加扰所述第一标识信息的OCC和用于发送所述第一消息的频域资源的序号，以及用于发送所述第一消息的时域资源的序号和/或所述终端设备可选的OCC的总数量确定。
  27. 根据权利要求26所述的方法，其特征在于，若用于发送所述第一消息的频域资源的分配方式为资源交错分配方式，则用于发送所述第一消息的频域资源的序号为资源交错分配中用于发送所述第一消息的频域资源的序号。
  28. 根据权利要求19至24任一项所述的方法，其特征在于，所述根据所述第一消息，向所述终端设备发送第二消息之后，所述方法还包括：
    接收所述终端设备发送的第三消息，所述第三消息用于指示所述第一标识信息对应的终端设备随机接入成功；
    或者，接收所述终端设备发送的第四消息，并根据所述第四消息重发所述第二消息，其中，所述第四消息用于指示所述第一标识信息对应的终端设备随机接入失败。
  29. 根据权利要求20所述的方法，其特征在于，所述第一消息还包括所述前导序列的序号；或者，所述第一消息还包括所述前导序列的序号和用于发送所述前导序列的频域资源的序号。
  30. 根据权利要求29所述的方法，其特征在于，所述前导序列的序号和所述第一标识信息在同一时频资源上发送；或者，
    所述前导序列的序号、所述第一标识信息和用于发送所述前导序列的频域资源的序号均在同一时频资源上发送。
  31. 根据权利要求19所述的方法，其特征在于，所述第一消息还包括所述网络设备的最佳下行发射波束信息。
  32. 根据权利要求28所述的方法，其特征在于，所述第二消息还包括用于发送所 述第三消息或用于发送所述第四消息的物理上行控制信道PUCCH的配置信息。
  33. 根据权利要求19所述的方法，其特征在于，所述第一标识信息为所述终端设备的全球唯一网络标识S-TMSI。
  34. 根据权利要求19所述的方法，其特征在于，若所述终端设备处于上行失步下行同步，则所述第一标识信息为所述终端设备的小区无线网络临时标识C-RNTI。
  35. 根据权利要求20所述的方法，其特征在于，所述第二消息还包括前导序列生成时间提前量TA。
  36. 一种随机接入装置，其特征在于，包括：用于实现如权利要求1-18任一项或者19-35任一项所述的随机接入方法。
  37. 一种随机接入设备，其特征在于，包括：
    存储器，用于存储计算机程序；
    处理器，用于执行所述计算机程序，以实现如权利要求1-18任一项或者19-35任一项所述的随机接入方法。
  38. 一种计算机存储介质，其特征在于，所述存储介质包括计算机指令，当所述指令被计算机执行时，使得所述计算机实现如权利要求1至35中任一项权利要求所述的随机接入方法。
  39. 一种计算机程序产品，其特征在于，所述程序产品包括计算机程序，所述计算机程序存储在可读存储介质中，通信装置的至少一个处理器可以从所述可读存储介质读取所述计算机程序，所述至少一个处理器执行所述计算机程序使得通信装置实施如权利要求1-18任一项或如权利要求19-35任一项所述的随机接入方法。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114364048A (zh) * 2020-10-12 2022-04-15 维沃移动通信有限公司 前导序列的处理方法、装置及终端

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020076201A1 (en) * 2018-10-08 2020-04-16 Telefonaktiebolaget Lm Ericsson (Publ) Prach detection in a radio access network
KR102880148B1 (ko) * 2019-03-28 2025-11-04 삼성전자주식회사 비면허 대역을 활용하는 무선통신시스템에서 상향링크 LBT (Listen-Before-Talk) 실패를 감지하는 방법 및 장치
US11751250B2 (en) * 2019-10-17 2023-09-05 Mediatek Singapore Pte. Ltd. Method and apparatus for random access channel preamble design in non-terrestrial network communications
WO2021168774A1 (en) * 2020-02-28 2021-09-02 Qualcomm Incorporated Two step random access procedure in wireless communication
WO2021223160A1 (zh) 2020-05-07 2021-11-11 Oppo广东移动通信有限公司 初始接入方法、受控设备和控制设备
CN112020084B (zh) * 2020-07-21 2021-07-20 北京邮电大学 一种卫星场景下两步随机接入信道设计及信号检测方法
CN114866201B (zh) * 2021-01-20 2023-07-25 大唐移动通信设备有限公司 接入传输方法、网络侧设备、终端和存储介质
CN120416981A (zh) * 2024-01-31 2025-08-01 华为技术有限公司 一种通信方法及相关装置
WO2025166520A1 (zh) * 2024-02-05 2025-08-14 Oppo广东移动通信有限公司 随机接入方法、装置、设备及存储介质
WO2025166521A1 (zh) * 2024-02-05 2025-08-14 Oppo广东移动通信有限公司 无线通信方法、装置、设备及存储介质
CN120499865A (zh) * 2024-02-08 2025-08-15 荣耀终端股份有限公司 随机接入方法及设备
WO2025184786A1 (zh) * 2024-03-04 2025-09-12 Oppo广东移动通信有限公司 信息传输方法、装置、设备及存储介质
CN120730533A (zh) * 2024-03-27 2025-09-30 华为技术有限公司 一种随机接入方法及装置
CN121220173A (zh) * 2024-04-01 2025-12-26 北京小米移动软件有限公司 信息的传输方法、终端、网络设备及存储介质
WO2025209418A1 (zh) * 2024-04-03 2025-10-09 华为技术有限公司 一种通信方法及装置
WO2025208584A1 (en) * 2024-04-04 2025-10-09 Nokia Shanghai Bell Co., Ltd. Random access response with orthogonal cover code utilized
CN121547886B (zh) * 2026-01-20 2026-04-21 中国星网网络应用有限公司 随机接入方法、装置、设备、存储介质及程序产品

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101980576A (zh) * 2010-10-19 2011-02-23 华为技术有限公司 随机接入处理方法和用户设备
WO2013097656A1 (zh) * 2011-12-27 2013-07-04 华为技术有限公司 随机接入发起、随机接入资源的通知方法及主基站
WO2017161995A1 (zh) * 2016-03-24 2017-09-28 电信科学技术研究院 一种终端发起的数据传输方法及装置
WO2018028662A1 (zh) * 2016-08-12 2018-02-15 华为技术有限公司 随机接入控制方法及装置
CN108282899A (zh) * 2017-01-05 2018-07-13 电信科学技术研究院 一种两步竞争随机接入方法和装置

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4928621B2 (ja) * 2010-05-27 2012-05-09 シャープ株式会社 無線通信システム、基地局装置、移動局装置、無線通信方法および集積回路
WO2017026974A1 (en) * 2015-08-12 2017-02-16 Intel Corporation Multi-user multiple input multiple output communication systems and methods
KR102568497B1 (ko) * 2015-08-13 2023-08-21 삼성전자 주식회사 무선 통신 시스템에서 통신 방법 및 장치
JP6272371B2 (ja) * 2016-02-04 2018-01-31 株式会社Ｎｔｔドコモ ユーザ端末、無線基地局及び無線通信方法
US10834709B2 (en) * 2016-03-03 2020-11-10 Lg Electronics Inc. Method and apparatus for transreceiving wireless signal in wireless communication system
CN114884640B (zh) * 2016-03-31 2024-07-30 北京三星通信技术研究有限公司 通信系统中的终端、基站及其方法
KR102909813B1 (ko) * 2016-04-04 2026-01-09 삼성전자 주식회사 무선 통신 시스템에서 피드백 송수신 방법 및 장치
WO2017196067A1 (ko) * 2016-05-10 2017-11-16 엘지전자 주식회사 무선 통신 시스템에서의 데이터 수신 방법 및 이를 위한 장치
WO2017209417A1 (ko) * 2016-06-03 2017-12-07 엘지전자 주식회사 무선 통신 시스템에서 상향링크 제어 정보 전송 방법 및 이를 위한 장치
CN107666712B (zh) * 2016-07-27 2020-04-24 中国移动通信有限公司研究院 一种上行传输方法及设备
KR20180035642A (ko) * 2016-09-29 2018-04-06 삼성전자주식회사 무선 셀룰라 통신 시스템에서 상향링크 제어신호 전송 방법 및 장치
ES2952241T3 (es) * 2016-09-29 2023-10-30 Samsung Electronics Co Ltd Procedimiento y aparato para transmisión de señal de control de enlace ascendente en un sistema de comunicación celular inalámbrica
US20190387550A1 (en) * 2017-01-06 2019-12-19 Idac Holdings, Inc. Physical broadcast channel, initial uplink transmission and system acquisition associated with new radio
CN108282901B (zh) * 2017-01-06 2019-08-09 电信科学技术研究院 一种随机接入响应方法和装置
US10848287B2 (en) * 2017-01-13 2020-11-24 Motorola Mobility Llc Method and apparatus for performing contention based random access in a carrier frequency
US10652775B2 (en) * 2017-03-14 2020-05-12 Qualcomm Incorporated Techniques for mitigating interference for transmissions of a periodic multi-beam discovery reference signal
US10827530B2 (en) * 2017-05-04 2020-11-03 Electronics And Telecommunications Research Institute Method for transmitting and receiving message for random access in multi beam system
US20180367358A1 (en) * 2017-06-14 2018-12-20 Huawei Technologies Co., Ltd. User equipment related reference signal design, transmission and reception
CN108111270B (zh) * 2017-06-16 2022-12-30 中兴通讯股份有限公司 导频信号发送、接收方法及装置
US11956831B2 (en) * 2018-08-09 2024-04-09 Lg Electronics Inc. Method and device for transmitting/receiving signal in wireless communication system
WO2020032742A1 (ko) * 2018-08-09 2020-02-13 엘지전자 주식회사 무선 통신 시스템에서 무선 신호 송수신 방법 및 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101980576A (zh) * 2010-10-19 2011-02-23 华为技术有限公司 随机接入处理方法和用户设备
WO2013097656A1 (zh) * 2011-12-27 2013-07-04 华为技术有限公司 随机接入发起、随机接入资源的通知方法及主基站
WO2017161995A1 (zh) * 2016-03-24 2017-09-28 电信科学技术研究院 一种终端发起的数据传输方法及装置
WO2018028662A1 (zh) * 2016-08-12 2018-02-15 华为技术有限公司 随机接入控制方法及装置
CN108282899A (zh) * 2017-01-05 2018-07-13 电信科学技术研究院 一种两步竞争随机接入方法和装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3836712A4

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114364048A (zh) * 2020-10-12 2022-04-15 维沃移动通信有限公司 前导序列的处理方法、装置及终端
WO2022078282A1 (zh) * 2020-10-12 2022-04-21 维沃移动通信有限公司 前导序列的处理方法、装置及终端
CN114364048B (zh) * 2020-10-12 2023-10-27 维沃移动通信有限公司 前导序列的处理方法、装置及终端

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EP3836712A4 (en) 2021-11-03
US20210168876A1 (en) 2021-06-03
BR112021002427A2 (pt) 2021-05-04
EP3836712A1 (en) 2021-06-16

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