WO2022247578A1 - 一种数据传输方法及通信装置 - Google Patents

一种数据传输方法及通信装置 Download PDF

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Publication number
WO2022247578A1
WO2022247578A1 PCT/CN2022/089920 CN2022089920W WO2022247578A1 WO 2022247578 A1 WO2022247578 A1 WO 2022247578A1 CN 2022089920 W CN2022089920 W CN 2022089920W WO 2022247578 A1 WO2022247578 A1 WO 2022247578A1
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WO
WIPO (PCT)
Prior art keywords
response message
communication device
indication information
information field
resource
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Ceased
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PCT/CN2022/089920
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English (en)
French (fr)
Inventor
徐修强
王磊
魏帆
陈雁
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
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Priority to EP22810307.3A priority Critical patent/EP4333509A4/en
Publication of WO2022247578A1 publication Critical patent/WO2022247578A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • 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
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • 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
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/115—Grant-free or autonomous transmission
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a data transmission method and a communication device.
  • 5G fifth generation
  • LTE long term evolution
  • NR new radio
  • the terminal will start the time window after sending information such as the random access preamble (Preamble) through Msg1 or MsgA (Msg is the abbreviation of the message), and will continue to monitor the response message of the base station within the time window until it detects The base station responds to the preamble sent by the terminal.
  • the base station does not detect Msg1 or MsgA (for example, the channel condition is poor or the terminal transmits power is low)
  • the terminal will still monitor the response message within the entire time window, which is prone to occurrence Ineffective monitoring, waste of power consumption, and increased delay in re-triggering random access.
  • the present application provides a data transmission method and a communication device, so as to save the power consumption of the terminal equipment during the RA process and improve the efficiency of random access.
  • the present application provides a data transmission method, which can be implemented through interaction between a first communication device and a second communication device.
  • the first communication device may be terminal equipment, such as: user equipment (user equipment, UE), vehicle-mounted equipment, etc.
  • the second communication device may be a transmission reception point (transmission reception point, TRP), 5G base station (gNodeB, gNB) etc.
  • TRP transmission reception point
  • gNodeB 5G base station
  • the first communication device can send the first information on the first resource, and the corresponding second communication device can receive the first information on the first resource, and then the second communication device can send the first response message, the first response message corresponds to the first resource, the first response message includes an indication information field, and the indication information field is used to indicate whether there is a second response message, and the second response message also corresponds to the first resource; the corresponding first communication
  • the device may receive the first response message. If there is a second response message in the indication information field, the second communication device sends the second response message. If the first response message does not correspond to the first communication device and the indication information field indicates that there is a second response message, the first communication device continues to monitor the second response message.
  • the first resource can be understood as a time-frequency resource, and different first communication devices can transmit messages in the time-domain resource, for example, UE1, UE2, and UE3 all send the first information in the first resource.
  • the time-frequency resource may include multiple resources with the same time domain but different frequency domains, multiple resources with the same frequency domain but different time domains, or multiple resources with different time domains and frequency domains. , the present application does not make a specific limitation here, and in this case, the UE may select one of them to send the first information.
  • the above-mentioned first information may be data transmitted by the first communication device to the second communication device or an access to establish a communication connection (such as a radio resource control (RRC) connection) between the first communication device and the second communication device Information, this application does not make specific limitations here.
  • a communication connection such as a radio resource control (RRC) connection
  • RRC radio resource control
  • the same time domain means that the time domain resources are completely overlapped
  • the same frequency domain means that the frequency domain resources are completely overlapped
  • the time domain is different means that the time domain resources are partially overlapped or not overlapped at all
  • the frequency domain is different means that the frequency domain resources are partially overlapped or No overlap at all.
  • the second communication device may receive multiple first communication devices. information.
  • the second communication device sends a first response message to multiple first messages, and each first communication device determines whether to continue monitoring according to the indication information in the indication information field in the first response message. For example, UE1 monitors the first response message from the gNB, and finds that the first response message is not aimed at UE1, but the first response message indicates that there is a second response message, then UE1 continues to monitor.
  • UE2 monitors the first response message from the gNB, and if the first response message is aimed at UE2, then UE2 stops monitoring.
  • the first response message carries an indication information field indicating whether there is a second response message, and the first communication device can determine whether to continue monitoring according to the existence of the second response message .
  • the first communication device determines that there is no second response message, that is, when it is determined that the second communication device will not send the second response message, it stops monitoring, which can save power consumption, and can also resend data or establish a connection with the second communication device. connection to improve data processing efficiency and access efficiency.
  • the first response message corresponds to the first communication device, or if the first response message does not correspond to the first communication device and the indication information field indicates that there is no second response message, stop monitoring.
  • UE1 monitors the first response message from the gNB, and finds that the first response message is aimed at UE1, and UE1 stops monitoring, or UE1 determines that the second response message does not exist, and also stops monitoring. In this way, the power consumption of the first communication device can be saved.
  • the indication information field includes one bit. This bit may indicate whether the second communication device will send the second response message. For example, in the indication information field, 1 indicates that the second communication device will send the second response message, and 0 indicates that the second communication device will not send the second response message, or it may be indicated in other ways, which are not specifically limited in this application. Then the first communication device may determine whether to continue monitoring according to the value of the bit in the indication information field after receiving the first response message, for example, UE1 receives the first response message, and the first response message is not for UE1, then UE1 then determines the value of the bit in the indication information field. If it is 1, it continues to monitor, and if it is 0, it stops monitoring. In this way, the power consumption of the first communication device can be saved.
  • the value of the response message may be a demodulation reference signal (demodulation reference signal, DMRS) or a sounding reference signal (sounding reference signal, SRS).
  • the Preamble or reference signal can be grouped, and one or more bits in the indication information field can be used to indicate whether there is a second response message for a certain Preamble group or reference signal group.
  • UE1-UE8 select Preamble or Preamble or reference signal in reference signal group 1 to send the first information
  • UE9-UE16 select Preamble or preamble or reference signal in reference signal group 2 to send the first information
  • UE17-UE24 select The Preamble or reference signal in Preamble or reference signal group 3 sends the first information
  • the indication information indicates whether there is a second response message for these Preamble or reference signal groups through 3 bits, for example, 000 indicates that there will be a second response message for the Preamble or reference signal group.
  • UE1-UE8 can choose to continue monitoring, and UE9-UE16 can also choose to continue Listening, UE17-UE24 stop listening; 001 indicates that there will be a second response message for Preamble or reference signal group 1, but there is no second response message for Preamble or reference signal group 2 and Preamble or reference signal group 3, UE1-UE8 can choose to continue monitoring, UE9-UE16 and UE17-UE24 stop monitoring, 111 means that the preamble or reference signal of these three groups does not exist, and UE1-UE24 do not need to continue monitoring.
  • the present application is described here as an example only, and not specifically limited.
  • each bit in the X bits corresponds to a Preamble group or a DMRS group.
  • UE1-UE8 select Preamble or reference signal group 1
  • UE9-UE16 select Preamble or reference signal group 2
  • UE17-UE24 select Preamble or reference signal group 2.
  • the indication information is indicated by 3 bits, wherein 110 indicates that there will be a second response message for Preamble or reference signal group 1 and Preamble or reference signal group 2, but there is no preamble or reference signal group 3 second response message, then UE1 ⁇ UE8 can choose to continue monitoring, UE9 ⁇ UE16 can also choose to continue listening, UE17 ⁇ UE24 stop listening, 000 means that the preamble or reference signal of these 3 groups does not exist, UE1 ⁇ UE24 does not need to continue monitoring.
  • the first response message does not correspond to the first communication device because the first response message does not include the identifier of the Preamble sent by the first communication device and the first response message includes the identifier for identifying the first communication device.
  • Information such as the ID of the first communication device.
  • the first communication device may determine whether the first response message is aimed at the first communication device according to whether there is a corresponding Preamble identifier in the first response message.
  • the first communication device monitors the first response message within a preset time window, or, for the second response message, the second communication device sends the first response message within the preset time window, Or, the second response message.
  • the length of the preset time window of the first communication device may be the same as or different from the length of the preset time window of the second communication device, which is not specifically limited in this application.
  • the first information is random access information or authorization-free transmission data. Since different first communication devices and second communication devices may have established communication connections, it is only necessary to transmit data to the second communication device.
  • the first information sent by the first communication device may be data transmission without authorization, but the first The communication device may not establish a communication connection with the second communication device, so it is necessary to send random access information, which is not specifically limited in this application, and shall be determined in combination with actual application scenarios. It can be understood that the difference between the random access information and the authorization-free transmission data is that the random access information includes the Preamble, and the authorization-free transmission data does not include the Preamble.
  • the present application provides a first communication device, including: an input and output unit and a processing unit.
  • the input and output unit is configured to send the first information at the first resource; and receive the first response message; the first response message corresponds to the first resource, and the first response message includes an indication information field, and the indication information field is used to indicate whether There is a second response message, and the second response message corresponds to the first resource; the processing unit is configured to continue to monitor the second response message if the first response message does not correspond to the first communication device and the indication information field indicates that there is the second response message.
  • the processing unit is further configured to: if the first response message corresponds to the first communication device, or, if the first response message does not correspond to the first communication device and the indication information field indicates that there is no second response message, stop listening.
  • the indication information field includes one bit.
  • each bit in the X bits corresponds to a Preamble or a reference signal group.
  • the first response message does not correspond to the first communication device because the first response message does not include the Preamble identifier sent by the first communication device or the identifier of the first communication device.
  • the first response message or the second response message is monitored within a preset time window.
  • the first information is random access information or authorization-free transmission data.
  • the present application provides a second communication device, including: an input and output unit and a processing unit.
  • the input and output unit is used to receive the first information at the first resource; and send the first response message; the first response message corresponds to the first resource, and the first response message includes an indication information field, and the indication information field is used to indicate whether There is a second response message, and the second response message corresponds to the first resource;
  • a processing unit configured to send a second response message if there is a second response message in the indication information field.
  • the indication information field includes one bit.
  • each bit in the X bits corresponds to a Preamble or a reference signal group.
  • the first response message, or the second response message is sent within a preset time window.
  • the first information is random access information or authorization-free transmission data.
  • the present application provides a communication device, including at least one processor and a memory; the memory is used to store computer programs or instructions, and when the device is running, the at least one processor executes the computer programs or instructions, so that The communication device executes the method according to the above first aspect or each embodiment of the first aspect.
  • the present application provides another communication device, including: an interface circuit and a logic circuit; where the interface circuit can be understood as an input-output interface, and the logic circuit can be used to run code instructions to execute the above-mentioned first aspect or the first aspect Methods of Examples.
  • the present application also provides a computer-readable storage medium, in which computer-readable instructions are stored.
  • the computer can execute the computer-readable storage medium according to the first aspect or the first aspect.
  • the present application provides a computer program product including instructions, which, when run on a computer, cause the computer to execute the above-mentioned first aspect or the method of each embodiment of the first aspect.
  • the present application provides a system-on-a-chip, which includes a processor and may further include a memory, configured to implement the method described in the above-mentioned first aspect or any possible design of the first aspect.
  • the system-on-a-chip may consist of chips, or may include chips and other discrete devices.
  • the present application provides a communication system, the system includes a first communication device and a second communication device, and the communication system is used to implement any possible design of the above first aspect or the first aspect the method described.
  • FIG. 1A shows a schematic diagram of a communication system provided by an embodiment of the present application
  • FIG. 1B shows a schematic diagram of another communication system provided by an embodiment of the present application.
  • Fig. 2 shows a schematic diagram of a data transmission method
  • Fig. 3 shows the schematic flow chart of 2-step RA
  • Fig. 4 shows the schematic flow chart of 4-step RA
  • FIG. 5 shows a schematic flowchart of a data transmission method provided by an embodiment of the present application
  • FIG. 6 shows a schematic diagram of an application scenario of a data transmission method provided by an embodiment of the present application
  • FIG. 7 shows a schematic diagram of an application scenario of a data transmission method provided by an embodiment of the present application.
  • FIG. 8 shows a schematic diagram of an application scenario of a data transmission method provided by an embodiment of the present application
  • FIG. 9 shows a schematic diagram of an application scenario of a data transmission method provided by an embodiment of the present application.
  • FIG. 10 shows a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 11 shows a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 12 shows a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • This application can be applied to 5G NR systems, and can also be applied to other communication systems, such as next-generation communication systems.
  • the second communication device is a network device
  • the first communication device is a terminal device (such as a UE)
  • the network device and UE1-UE6 form a communication system.
  • UE1-UE6 can send information to the network device, and the network device can receive the information sent by UE1-UE6 and give back a response message.
  • UE4-UE6 can also form a communication system.
  • the first communication device and the second communication device can both be terminal devices.
  • terminal device 1 sends configuration information to terminal device 2, and receives The data sent by the terminal device 2; and the terminal device 2 receives the configuration information sent by the terminal device 1, and sends data to the terminal device 1.
  • the applicable communication system of the present application may also be as shown in FIG. 1B , in which there is a single-hop (single-hop) or multi-hop (multi-hop) relay of a relay node.
  • the relay node can be a small station, an integrated access and backhauling (IAB) node, a distributed unit (DU), a terminal device, a transmitter and receiver point (TRP), etc. , the present application will not go into details here.
  • the above-mentioned network device is a device deployed in a wireless access network to provide a wireless communication function for a terminal device.
  • the access network device is a device with wireless transceiver function or a chip that can be set on the device, including but not limited to: evolved node B (evolved node B, eNB), radio network controller (radio network controller, RNC), Node B (node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (baseband unit, BBU), wireless fidelity (wireless fidelity, WIFI) system access point (access point, AP), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP), etc., can also be a gNB in a 5G (such as NR) system, or, a transmission point (T
  • a gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include a radio unit (radio unit, RU).
  • CU implements some functions of gNB
  • DU implements some functions of gNB, for example, CU implements RRC, packet data convergence protocol (packet data convergence protocol, PDCP) layer functions, DU implements radio link control (radio link control, RLC) , Media access control (media access control, MAC) and physical (physical, PHY) layer functions.
  • the access network device may be a CU node, or a DU node, or a device including a CU node and a DU node.
  • the CU can be divided into network devices in the access network RAN, and the CU can also be divided into network devices in the core network CN, which is not limited here.
  • the terminal equipment involved in the embodiments of the present application is an entity on the user side for receiving or transmitting signals, and is used for sending uplink signals to network equipment or receiving downlink signals from network equipment.
  • Including devices that provide voice and/or data connectivity to a user may include, for example, a handheld device with wireless connectivity, or a processing device connected to a wireless modem.
  • the terminal device can communicate with the core network via a radio access network (radio access network, RAN), and exchange voice and/or data with the RAN.
  • radio access network radio access network
  • the terminal equipment may include UE, V2X terminal equipment, wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, machine-to-machine/machine-type communication (machine-to-machine/machine -type communications, M2M/MTC) terminal equipment, internet of things (IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station , access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device), wearable equipment, on-board equipment, drones, etc.
  • IoT internet of things
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices or smart wearable devices, etc., which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.
  • the various terminal devices described above if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be considered as vehicle-mounted terminal devices. ).
  • the terminal if the terminal has UP data that needs to be sent to the base station, the terminal first performs a random access RA process and enters the active/connected state (Active/Connected State). or Active/Connected Mode), and then send a scheduling request (Scheduling Request, SR) to the base station through the physical uplink control channel (PUCCH) or report the cache to the base station through the physical uplink shared channel (PUSCH) State (buffer state, BS). After receiving the SR or buffer state report (BSR) sent by the terminal, the base station sends downlink control information (DCI) to the terminal through the physical downlink control channel (PDCCH).
  • SR scheduling request
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • BSR buffer state report
  • DCI downlink control information
  • the DCI carries The uplink grant (UL Grant) is used to authorize the terminal to use the specified parameters on the specified time-frequency resources, such as the specified modulation and coding scheme (modulation and coding scheme, MCS), etc. to send uplink data.
  • the process is shown in Figure 2.
  • the cache status report is usually sent through medium access control (medium access control, MAC) layer signaling, and is carried in a MAC control element (control element, CE) in the header of the data packet.
  • medium access control medium access control, MAC
  • CE control element
  • random access can generally be divided into two categories, one is two-step random access 2-step RA (as shown in Figure 3), and the other is four-step random access 4-step RA (such as Figure 4).
  • the terminal sends MsgA to the base station, MsgA is composed of physical random access channel (physical random access channel, PRACH) and PUSCH, where PRACH is used to send random access preamble Preamble, PUSCH is used to send control plane (control plane, CP) and/or user plane data; after receiving MsgA, the base station sends MsgB to the terminal, wherein, if the base station correctly decodes the PUSCH in MsgA, MsgB is called success RAR, which includes contention resolution message, if the base station does not correctly decode the PUSCH, MsgB is called fallback (fallback) RAR, after the terminal receives the fallback RAR, it will fall back to 4-step RA according to the uplink grant (UL grant) carried in it, and send it to the base station Msg3.
  • PRACH physical random access channel
  • PUSCH is used to send control plane (control plane, CP) and/or user plane data
  • MsgB after receiving MsgA
  • the terminal first sends Preamble to the base station through PRACH, that is, Msg1; after receiving Msg1, the base station sends RAR, that is, Msg2 to the terminal; the terminal sends Msg3, Msg3 to the base station according to the UL grant contained in the RAR Carry control plane and/or user plane data; after receiving Msg3 correctly, the base station sends a contention resolution message to the terminal, that is, Msg4, and Msg4 may also carry control plane and/or user plane data.
  • Msg3 or Msg4 carries user plane data
  • the 4-step RA can also be called early data transmission (EDT).
  • MsgA in 2-step RA can be regarded as the merger of Msg1 and Msg3 in 4-step RA, while MsgB can be regarded as the merger of Msg2 and Msg4. Therefore, compared to 4-step RA, 2- step RA can achieve lower access delay and terminal power consumption.
  • random access can be divided into contention-based random access (contention-based RA, CBRA) and non-contention-based random access (contention-free RA, CFRA) .
  • CBRA usually the base station sends random access resource allocation instructions through public radio resource control (radio resource control, RRC) signaling such as system information (SI), and configures the PRACH resource pool and Preamble for random access of terminals.
  • RRC radio resource control
  • SI system information
  • the terminal selects a PRACH and a Preamble from the configured PRACH resource pool and Preamble resource pool respectively, and sends the selected Preamble on the selected PRACH resource.
  • the terminal will also send control plane and/or user plane data on the PUSCH resource associated with the selected PRACH and Preamble, where the PUSCH resource is also configured by the base station through public RRC signaling such as system message SI .
  • the reason why PUSCH resources are associated with PRACH resources and Preamble is to reduce the complexity of base station blind detection.
  • the base station can determine PUSCH resources according to the detected Preamble, so that PUSCH can be directly received and demodulated. , to avoid PUSCH blind detection or reduce the number of blind detections.
  • different terminals may select the same PRACH resource and Preamble to perform contention random access.
  • CFRA there is no competition relationship when the terminal performs random access, because the base station usually instructs the terminal to use PRACH resources and/or Preamble for random access through dedicated signaling such as RRC message or DCI.
  • the terminal After sending Msg1 or MsgA, the terminal will start a response time window (hereinafter referred to as the time window), and monitor the response message from the base station within the time window, that is, Msg2 or MsgB.
  • the specific monitoring method is usually, the terminal determines a radio network temporary identity (radio network temporary identity, RNTI) according to the PRACH resource sending the Preamble, and uses the RNTI to monitor the PDCCH used to schedule Msg2 or MsgB within the time window, according to the PDCCH Indicates further reception of Msg2 or MsgB.
  • RNTI radio network temporary identity
  • the terminal needs to use the Preamble identifier (random access preamble identifier, RAP ID) carried in Msg2 to determine whether the received Msg2 is aimed at the terminal.
  • RAP ID random access preamble identifier
  • a terminal monitors the PDCCH and correctly decodes the Msg2 scheduled by the PDCCH, if it is determined that the RAP ID carried in the Msg2 received by Msg2 is the same as the ID of the Preamble sent by the terminal, the terminal considers that the response is for Otherwise, the terminal stops the time window, and sends Msg3 according to the indication of the UL grant carried in the response.
  • the terminal will continue to use the determined RNTI to monitor the PDCCH until the end of the time window: the terminal monitors the PDCCH but fails to correctly decode the scheduled Msg2, and the terminal decodes Msg2 but finds that it does not carry information sent by the terminal.
  • the terminal may reselect the PRACH resource and the Preamble, and send the Msg1 again.
  • 2-step RA the situation is similar to that of 4-step RA. The difference is that after the terminal sends MsgA, it may receive the fallback RAR for the Preamble sent by the terminal, or the success RAR for the terminal.
  • the situation is the same as 4-step RACH, and for the latter, success RAR does not carry the RAP ID, but the contention resolution CR ID sent by the terminal in MsgA, that is, if the terminal judges that the CR ID carried by MsgB is the same as that of the terminal in MsgA If the sent CR IDs are the same, the terminal thinks that the MsgB is for the terminal, and the terminal will stop the time window.
  • the CR ID here can also be understood as the ID used to identify the terminal.
  • the terminal listens to the PDCCH but fails to correctly decode the scheduled MsgB.
  • the terminal decodes the MsgB but finds that it does not carry the same RAPID as the Preamble ID sent by the terminal and does not have the same CR ID as the CR ID sent by the terminal.
  • the terminal may reselect PRACH resources and Preamble, and send Msg1 or MsgB again.
  • the terminal needs to send a Preamble to the base station through the PRACH channel, in order for the base station to estimate the timing advance (TA) of the terminal.
  • TA timing advance
  • the terminal needs to send a Preamble to the base station through the PRACH channel, in order for the base station to estimate the timing advance (TA) of the terminal.
  • TA timing advance
  • sending the Preamble each time actually increases the number of terminals. power consumption.
  • the 3rd generation partnership project (3rd generation partnership project, 3GPP) has introduced idle state and inactive state uplink grant free (GF) transmission, such as based on pre-configured uplink resource (pre-configured uplink resource, PUR) transmission and configured authorization (configured grant, CG) transmission (such as Type 1CG).
  • GF pre-configured uplink resource
  • PUR pre-configured uplink resource
  • CG configured authorization
  • GF transmission are based on RRC signaling by the base station, such as system messages or other dedicated RRC signaling, etc.
  • the uplink transmission configuration of the terminal includes one or more of the following parameters: period of time domain resources, open Ring power control related parameters, waveform, redundant version sequence, number of repetitions, frequency hopping mode, resource allocation type, hybrid automatic repeat request (HARQ) process number, demodulation reference signal (demodulation reference signal, DMRS) related parameters, modulation and coding scheme tables, resource block (resource block group, RBG) group size, time domain resources, frequency domain resources, MCS, etc.
  • HARQ hybrid automatic repeat request
  • the terminal After receiving the configuration information, if there is data to be transmitted, the terminal can immediately use the configured transmission parameters to perform PUSCH transmission on the configured time-frequency resources without sending Preamble first, so as to achieve the purpose of saving overhead and power consumption.
  • the response monitoring of GF transmission can also adopt the same mechanism as random access, that is, the terminal determines the RNTI according to the resource information for sending the PUSCH, and then uses the RNTI to monitor the response message within the time window.
  • the base station will not respond to the Msg1 or MsgA sent by the terminal: the base station does not detect Msg1 or MsgA (for example, the channel condition is very poor or the terminal transmits power is small), the base station detects Msg1 or MsgA but chooses not to response. In these two cases, because the terminal does not know it, it will still monitor possible response messages in the entire time window, resulting in invalid monitoring, resulting in waste of power consumption, and increasing the delay of re-triggering random access. Based on this, this The application proposes a new data transmission method to reduce the power consumption of terminal equipment and improve the efficiency of random access.
  • the data transmission method provided in this application can be applied to the first communication device or the second communication device, and can also be implemented through the interaction between the first communication device and the second communication device, which is not specifically limited in this application.
  • Fig. 5 shows a process in which the first communication device and the second communication device interact to realize data transmission.
  • the first communication device is UE1, UE2, and UE3
  • the second communication device is gNB as an example for an exemplary description. Specifically Executable as follows:
  • Step 501A UE1 sends first information on a first resource.
  • Step 501B UE2 sends the first information on the first resource.
  • step 501C UE3 sends first information on a first resource.
  • the gNB receives the first information from UE1-UE3.
  • the above steps 501A to 501C are performed in no particular order, as long as the first resource is the same time-frequency resource.
  • the first resource may be a time-frequency resource, or may be a set of resources including multiple resources with the same time domain but different frequency domains, or the same frequency domain but different time domains, or different time domains and frequency domains.
  • the UE may select one of them to send the first information. Different UEs can transmit messages on the first resource, for example, UE1, UE2 and UE3 all transmit the first information in time slot 1.
  • the above-mentioned first information may be data transmitted by UE, such as authorization-free transmission data, or access information for establishing a communication connection between UE and gNB. limited.
  • Step 502 gNB sends a first response message to UE1, UE2, UE3.
  • UE1-UE3 may receive the first response message from the gNB.
  • the first response message corresponds to the first resource
  • the first response message includes an indication information field
  • the indication information field is used to indicate whether there is a second response message
  • the second response message also corresponds to the first resource. If there is a second response message in the indication information field, the gNB sends the second response message.
  • step 503A if UE1 determines that the first response message does not correspond to UE1 and the indication information field indicates that there is a second response message, UE1 continues to monitor the second response message. It should be noted that when the first information is Msg1, the first response message does not correspond to UE1. It can be understood that the first response message does not include the identifier of the Preamble sent by UE1. When the first information is MsgA, the first response message does not correspond to UE1. UE1 may understand that the first response message does not include the identifier of the Preamble sent by UE1 and does not include the identifier of UE1.
  • Step 503B UE2 stops monitoring if it determines that the first response message corresponds to UE2.
  • Step 503C if UE3 determines that the first response message does not correspond to UE3 and the indication information field indicates that there is no second response message, UE3 stops monitoring.
  • the UE may listen to the first response message or the second response message within the preset time window, and the gNB may also send the first response message or the second response message within the preset time window .
  • the length of the preset time window of the UE may be the same as or different from the length of the time window preset by the gNB, which is not specifically limited in this application.
  • the first response message carries an indication information field indicating whether there is a second response message, and the first communication device can determine whether to continue monitoring according to the existence of the second response message
  • the first communication device determines that there is no second response message, it stops monitoring, which can save power consumption, and can also resend data or establish a connection with the second communication device, thereby improving data processing efficiency and access efficiency.
  • the indication information field may include one bit. This bit may indicate whether the gNB will issue the second response message. For example, if the indication information field uses 1 to indicate that the gNB will send the second response message, and uses 0 to indicate that the gNB will not send the second response message, it can also be indicated in other ways, which are not specifically limited in this application.
  • the UE can determine whether to continue monitoring according to the value of the bit in the indication information field. For example, if UE1 receives the first response message, and the first response message is not for UE1, then UE1 determines Indicates the value of the bit in the information field. If it is 1, it will continue to monitor, if it is 0, it will stop monitoring, or vice versa, 0 means continue monitoring and 1 means stop monitoring. The effect is the same. The power consumption of the first communication device is saved.
  • the indication information field may include X bits, which are used to indicate the ID of at least one UE.
  • the gNB may directly indicate for which Preambles there are second response messages, for example, there are second response messages for Preamble1, Preamble3, and Preamble5.
  • the Preambles can be grouped (for example, Preamble1 ⁇ Preamble8 are divided into Preamble Group 1, Preamble16 ⁇ Preamble24 are divided into Preamble Group 2, Preamble48 ⁇ Preamble24 are divided into Preamble Group 2, and Preamble48 ⁇ Preamble56 is divided into Preamble group 3, etc.
  • Preamble1 ⁇ Preamble8 are divided into Preamble Group 1
  • Preamble16 ⁇ Preamble24 are divided into Preamble Group 2
  • Preamble48 ⁇ Preamble24 are divided into Preamble Group 2
  • Preamble48 ⁇ Preamble56 is divided into Preamble group 3, etc.
  • This application does not specifically limit it here, and this application does not limit which Preamble group the UE chooses to send the first information), by indicating one or more in the information field bits to indicate whether there is a second response message for a Preamble group.
  • UE1-UE8 select Preamble in Preamble Group 1 to send the first message
  • UE9-UE16 select Preamble in Preamble Group 2 to send the first message
  • UE17-UE24 select Preamble in Preamble Group 3 to send
  • the first information indicates whether there is a second response message for these Preamble groups through 3 bits, for example, 000 indicates that there will be a second response message for Preamble group 1 and Preamble group 2, but there is no second response message for Preamble group 1 and Preamble group 2. If the second response message of group 3 is received, then UE1-UE8 can choose to continue monitoring, UE9-UE16 can also choose to continue monitoring, and UE9-UE16 stop monitoring.
  • Table 1 is only described here as an example, and it is not specifically limited which bit values are used to indicate whether there is a second response message in which Preamble groups.
  • each bit among the X bits may correspond to a Preamble group.
  • the indication information field indicates that the gNB will send the second response message for the Preamble group by 1, and indicates that the gNB will not send the second response message for the Preamble group by 0 as an example for illustration.
  • UE1-UE8 select the Preamble in Preamble group 1 to send the first message
  • UE9-UE16 select the Preamble in Preamble group 2 to send the first message
  • UE17-UE24 select the Preamble in Preamble group 3 to send the first message
  • the indication information is indicated by 3 bits, wherein the first bit is used to indicate whether there is a second response message for Preamble group 1, and the second bit is used to indicate whether there is a second response message for Preamble group 2 message
  • the third bit is used to indicate whether there is a second response message for Preamble group 3, as shown in Table 2, wherein, 110 indicates that there is a second response message in Preamble group 1, and there is a second response message in Preamble group 2, If there is no second response message in Preamble group 3, then UE1-UE8 can continue to monitor, UE9-UE16 can also continue to monitor, and UE9-UE16 will stop monitoring.
  • Table 2 is only an exemplary description here, and does not specifically limit the
  • the values corresponding to the bits include a value indicating that there is no second response message.
  • the gNB may directly indicate for which DMRSs there are second response messages, for example, there are second response messages for DMRS1, DMRS3, and DMRS5.
  • DMRS can be grouped (for example, DMRS1 ⁇ DMRS8 can be divided into DMRS group 1, DMRS16 ⁇ DMRS24 can be divided into DMRS group 2, DMRS48 ⁇ DMRS56 can be divided into DMRS group 3, etc., and there may be other grouping methods in this application It is not specifically limited here, and the application does not limit the DMRS of which DMRS group the UE selects to send the first information).
  • UE1-UE8 select the DMRS in DMRS group 1 to send the first information
  • UE9-UE16 select the DMRS in DMRS group 2 to send the first information
  • the indication information field is indicated by 2 bits, wherein, 00 indicates that there will be a second response message for DMRS group 1, but there is no second response message for DMRS group 2, then UE1-UE8 can continue to monitor, and UE9-UE16 will stop monitoring; 10 indicates that there is no second response message for DMRS group 2. 1 and there is no second response message of DMRS group 2, then UE1-UE8 stop listening, and UE9-UE16 also stop listening.
  • the present application is described here as an example only, and not specifically limited.
  • each of the plurality of bits may correspond to a DMRS group.
  • the indication information field indicates that the gNB will send the second response message for the DMRS group by 1, and indicates that the gNB will not send the second response message for the DMRS group by 0 as an example for illustration.
  • UE1-UE8 select the DMRS in DMRS group 1 to send the first information
  • UE9-UE16 select the DMRS in DMRS group 2 to send the first information
  • UE17-UE24 select the DMRS in DMRS group 3 to send the first information.
  • the indication information is indicated by 3 bits, wherein the first bit is used to indicate whether there will be a second response message for DMRS group 1, and the second bit is used to indicate whether there will be a second response message for DMRS group 2.
  • the second response message, the third bit is used to indicate whether there will be a second response message for DMRS group 3, as shown in Table 4, where 110 indicates that there will be a second response message for DMRS group 1 and DMRS group 2 If there is no second response message for DMRS group 3, UE1-UE8 can continue to monitor, UE9-UE16 can also continue to monitor, and UE9-UE16 stop monitoring.
  • the first information is random access information or authorization-free transmission data
  • the indication information field indicates different information, as follows:
  • the first information is random access information
  • the indication information field indicates whether to send the second response message through different values of bits
  • the first communication device is used as a terminal
  • the second communication device is used as a base station to briefly describe the execution process that may be involved in the embodiment of the present application in practical applications.
  • Step 1 The terminal receives configuration information delivered by the base station, and the terminal can determine available PRACH resources and Preamble resources according to the configuration information.
  • the base station can send configuration information through RRC messages (such as system messages) or PDCCH or MAC CE.
  • RRC messages such as system messages
  • PDCCH Physical Downlink Control Channel
  • MAC CE MAC Control Channel
  • the above PRACH resource refers to the PRACH time-frequency resource
  • the Preamble resource can be one of the following sequences:
  • Sequence 1 ZC sequence, determined by root sequence index u, cyclic shift interval Ncs, and cyclic shift index v.
  • Sequence 2 m sequence, the M sequence of length 2 m -1 (m>1) can be defined as in,
  • Sequence 3 PN sequence, the PN sequence applied in the 5G NR system is generated from a Gold sequence with a length of 31.
  • x 1 (n+31) (x 1 (n+3)+x 1 (n)) mod 2
  • x 2 (n+31) (x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n)) mod 2
  • c(n) is the generated PN sequence
  • the initial value of the second M sequence x 2 (n) is
  • Sequence 6 Gold sequence, Gold sequence is the modular sum of two M sequences.
  • Step 2 The terminal selects a PRACH and a Preamble from the PRACH resources and Preamble resources determined in Step 1, sends Msg1 or MsgA to the base station, and determines the RNTI.
  • the terminal may determine the RNTI according to the selected time-frequency resource of the PRACH, or obtain the RNTI from the configuration information delivered by the base station, which is not specifically limited in this application.
  • an implementation manner for the terminal to determine the RNTI according to the PRACH time-frequency resource can be determined by referring to section TS 38.3215.1.3 or 5.1.3a.
  • Step 3 After sending Msg1 or MsgA, the terminal starts a time window, uses the RNTI determined in step 2 to monitor the PDCCH within the time window, and receives the PDSCH scheduled by the PDCCH (the RAR is carried in the PDSCH).
  • Step 4 The terminal obtains the indication information field from the monitored PDCCH or the received PDSCH, and determines whether to continue using the determined RNTI to monitor the PDCCH according to the indication information field.
  • the indication information field may be carried in the PDCCH, or in the PDSCH scheduled by the PDCCH, such as in the MAC CE.
  • the RAP ID or CR ID carried by the PDSCH described in Figure 3 and Figure 4 above is used to feed back which Preamble or terminal the RAR contained in the PDSCH currently sent by the base station is for.
  • the terminal finds that the RAP ID or CR ID is different from the ID or CR ID of the sent Preamble (that is, the PDSCH is not for the Preamble sent by the terminal or not for the terminal), the terminal will continue to monitor the PDCCH within the time window.
  • the present application indicates whether the base station will continue to send a response message through the indication information field or indicates whether the terminal continues to monitor the response message (that is, monitor the PDCCH), and the corresponding terminal behavior is also different, even if the terminal finds that the RAPID or CR ID is different from the sent one.
  • Preamble ID or CR ID if the indication information indicates that the base station will not send a response message or instructs the terminal to stop monitoring the response message, the terminal will also stop monitoring the PDCCH.
  • the indication information field can only contain one bit. When the value is 1, it means that the base station may send a response message within the time window. At this time, the corresponding terminal continues to monitor the PDCCH within the time window; when the value is 0, it means The base station will not send a response message again within the time window, and the corresponding terminal stops the time window and no longer monitors the PDCCH.
  • the indication information field may also indicate whether each Preamble group monitors the second response message (that is, monitors the PDCCH) as shown in Table 1 or Table 2 above.
  • Step 5 If the terminal determines not to continue using the determined RNTI to monitor the PDCCH according to the acquired indication information field, the terminal no longer monitors the PDCCH.
  • Figure 6 takes the 4-step RACH as an example to illustrate the situation 1.1.
  • three terminals UE1, UE2, UE3 respectively send three different Preambles (P1, P2, P3) on the same PRACH time-frequency resource.
  • the base station only detects P1 and P2, but not P3.
  • the base station sends a response message for P1 first, and the response message carries 1-bit indication field information, and the indication field information is 1, which means that the base station will send a response message, after UE2 and UE3 obtain the indication field information, they will also Continue to monitor the PDCCH.
  • the base station continues to issue a response message for P2.
  • the response message carries 1-bit indication information and is set to 0, indicating that the base station stops sending the response message.
  • UE3 After UE3 obtains the indication field information, it will no longer monitor the PDCCH, and UE3 will monitor the response. The time is less than the time window length. However, in the prior art, when the base station does not detect P3, UE3 will monitor the PDCCH within the entire response time window. Therefore, compared with the prior art, this application can reduce invalid monitoring, save power consumption, and at the same time, trigger the PDCCH early Preamble retransmission reduces the access delay of random access.
  • the first information is authorization-free transmission data
  • the indication information field indicates whether to send the second response message through different values of bits
  • Step 2 The terminal selects a PUSCH resource and a DMRS from the PUSCH resources and DMRS resources determined in Step 1, sends the PUSCH to the base station, and determines the RNTI.
  • the terminal may determine the RNTI according to the selected time-frequency resource of the PUSCH, or obtain the RNTI from the configuration information delivered by the base station, which is not specifically limited in this application.
  • an implementation method for the terminal to determine the RNTI according to the PUSCH time-frequency resources may be to determine the RA-RNTI or MsgB-RNTI similar to the provisions of TS 38.321 section 5.1.3 or 5.1.3a.
  • Step 3 After sending the PUSCH, the terminal starts the time window, uses the RNTI determined in step 2 to monitor the PDCCH within the time window, and receives the PDSCH scheduled by the PDCCH (PDSCH carries a response message).
  • Step 4 and step 5 are the same as the steps in the above case 1.1, which can be understood by reference, and will not be described here.
  • Figure 7 takes authorization-free transmission as an example to illustrate case 1.2.
  • the base station only detects D1 and D2, but not D3.
  • the base station sends a response message for D1 first, and the response message carries 1-bit indication field information, and the indication field information is 1, which means that the base station will send a response message, after UE2 and UE3 obtain the indication field information, they will also Continue to monitor the PDCCH.
  • the base station continues to issue a response message for D2, and the response message carries 1-bit indication information and is set to 0, indicating that the base station stops sending the response message.
  • UE3 After UE3 obtains the indication field information, it stops the time window and no longer monitors the PDCCH. The time for UE3 to monitor the response is less than the length of the time window. However, in the prior art, when the base station does not detect D3, UE3 will monitor the PDCCH within the entire response time window. Therefore, compared with the prior art, this application can reduce invalid monitoring, save power consumption, and at the same time, trigger the PDCCH early The retransmission of DMRS reduces the access delay of random access.
  • the first information is random access information
  • the indication information field indicates whether the first message is detected through different values of bits
  • Case 2.1 is similar to case 1.1, and the execution processes involved are the same, only the indication information in the indication information field is different.
  • the indication information field can indicate the information of the preamble detected by the base station, and/or not detected, For example RAP ID. The corresponding terminal behaviors are different. Even if the terminal finds that the RAP ID or CR ID is different from the ID or CR ID of the preamble sent, if the indication information indicates that the base station has not detected the preamble sent by the terminal, the terminal will stop monitoring the PDCCH.
  • Figure 8 takes 2-step RACH as an example to illustrate situation 2.1.
  • the base station only detects P1 and P2, but not P3.
  • the base station sends a response message for P1 or UE1 first, and the response message carries indication information, indicating that the base station has detected P1 and P2, but not P3, after UE2 and UE3 obtain the indication information, UE2 will continue to monitor the PDCCH, However, UE3 no longer monitors the PDCCH, and the time for UE3 to monitor the response is less than the length of the time window.
  • UE2 stops listening after listening to the response message aimed at itself.
  • the base station does not detect P3
  • UE3 will monitor the PDCCH within the entire response time window. Therefore, compared with the prior art, this application can reduce invalid monitoring and save power consumption. At the same time, it can trigger the restart of Preamble early. transmission, reducing the access delay of random access.
  • the first message is data for authorization-free transmission
  • the indication information field indicates whether the first message is detected through different values of bits
  • Case 2.2 is similar to case 1.2, and the execution processes involved are the same, only the indication information in the indication information field is different.
  • the indication information field may indicate the information of the DMRS detected by the base station, and/or not detected, For example DMRS ID. The behavior of the corresponding terminal is different. If the indication information indicates that the base station has not detected the DMRS sent by the terminal, the terminal will stop monitoring the PDCCH.
  • Figure 9 is an example of authorization-free transmission to illustrate case 2.2.
  • the base station only detects D1 and D3, but not D2.
  • the base station sends a response message to D1 or UE1 first, and the response message carries indication information indicating that the base station has detected D1 and D3, but not D2, after UE3 and UE2 obtain the indication information, UE3 will continue to monitor the PDCCH until Until the response for UE3 is received, UE2 will no longer monitor the PDCCH, and the time for UE2 to monitor the response is less than the length of the time window.
  • the base station does not detect D2, UE2 will monitor the PDCCH within the entire response time window. Therefore, compared with the prior art, this application can reduce invalid monitoring and save power consumption. transmission, reducing the access delay of random access.
  • Figure 10 shows a communication device provided by the embodiment of the present application
  • the communication device includes an input and output unit 1001 and a processing unit 1002, in practical applications, the input and output unit 1001 can be realized by the same data processing chip, or by Different data processing chips are implemented, and this application does not make specific limitations here.
  • the communication device may be the above-mentioned first communication device and second communication device, which are not specifically limited in this application.
  • the input and output unit 1001 When it is the first communication device, that is, terminal equipment, etc., it can use the input and output unit 1001 to use the first resource to send the first information; and receive the first response message; the first response message corresponds to the first resource, and the first response
  • the message includes an indication information field, and the indication information field is used to indicate whether there is a second response message, and the second response message corresponds to the first resource; if the processing unit 1002 determines that the first response message does not correspond to the first communication device and the indication information field indicates If there is a second response message, continue to monitor the second response message.
  • the input and output unit 1001 can receive the first information at the first resource; and send the first response message; the first response message corresponds to the first resource, and the first response
  • the message includes an indication information field, the indication information field is used to indicate whether there is a second response message, and the second response message corresponds to the first resource; the processing unit 1002, if there is a second response message in the indication information field, then send the second response message .
  • the first resource can be understood as a time-frequency resource, and different first communication devices can transmit messages in the time-domain resource, for example, UE1, UE2, and UE3 all send the first information in the first resource.
  • the first resource may be a time-frequency resource, or may be a set of resources including multiple resources with the same time domain but different frequency domains, or the same frequency domain but different time domains, or different time domains and frequency domains. In this case Next, the UE may select one of them to send the first information.
  • the above-mentioned first information may be the data transmitted by the first communication device to the second communication device or the access information for establishing a communication connection (such as an RRC connection) between the first communication device and the second communication device, which is not specifically limited in this application.
  • a communication connection such as an RRC connection
  • the same time domain means that the time domain resources are completely overlapped
  • the same frequency domain means that the frequency domain resources are completely overlapped
  • the time domain is different means that the time domain resources are partially overlapped or not overlapped at all
  • the frequency domain is different means that the frequency domain resources are partially overlapped or No overlap at all.
  • the second communication device may receive multiple first communication devices. information.
  • the second communication device sends a first response message to multiple first messages, and each first communication device determines whether to continue monitoring according to the indication information in the indication information field in the first response message. For example, UE1 monitors the first response message from the gNB, and finds that the first response message is not aimed at UE1, but the first response message indicates that there is a second response message, then UE1 continues to monitor.
  • UE2 monitors the first response message from the gNB, and if the first response message is aimed at UE2, then UE2 stops monitoring.
  • the first response message carries an indication information field indicating whether there is a second response message, and the first communication device can determine whether to continue monitoring according to the existence of the second response message .
  • the first communication device determines that there is no second response message, that is, when it is determined that the second communication device will not send the second response message, it stops monitoring, which can save power consumption, and can also resend data or establish a connection with the second communication device. connection to improve data processing efficiency and access efficiency.
  • the first response message corresponds to the first communication device, or if the first response message does not correspond to the first communication device and the indication information field indicates that there is no second response message, stop monitoring.
  • UE1 monitors the first response message from the gNB, and finds that the first response message is aimed at UE1, and UE1 stops monitoring, or UE1 determines that the second response message does not exist, and also stops monitoring. In this way, the power consumption of the first communication device can be saved.
  • the indication information field includes one bit. This bit may indicate whether the second communication device will send the second response message. For example, in the indication information field, 1 indicates that the second communication device will send the second response message, and 0 indicates that the second communication device will not send the second response message, or it may be indicated in other ways, which are not specifically limited in this application. Then the first communication device may determine whether to continue monitoring according to the value of the bit in the indication information field after receiving the first response message, for example, UE1 receives the first response message, and the first response message is not for UE1, then UE1 then determines the value of the bit in the indication information field. If it is 1, it continues to monitor, and if it is 0, it stops monitoring. In this way, the power consumption of the first communication device can be saved.
  • the value of the response message may be a demodulation reference signal (demodulation reference signal, DMRS) or a sounding reference signal (sounding reference signal, SRS).
  • the Preamble or reference signal can be grouped, and one or more bits in the indication information field can be used to indicate whether there is a second response message for a certain Preamble group or reference signal group.
  • UE1-UE8 select Preamble or Preamble or reference signal in reference signal group 1 to send the first information
  • UE9-UE16 select Preamble or preamble or reference signal in reference signal group 2 to send the first information
  • UE17-UE24 select The Preamble or reference signal in Preamble or reference signal group 3 sends the first information
  • the indication information indicates whether there is a second response message for these Preamble or reference signal groups through 3 bits, for example, 000 indicates that there will be a second response message for the Preamble or reference signal group.
  • UE1-UE8 can choose to continue monitoring, and UE9-UE16 can also choose to continue Listening, UE17-UE24 stop listening; 001 indicates that there will be a second response message for Preamble or reference signal group 1, but there is no second response message for preamble or reference signal group 2 and Preamble or reference signal group 3 , UE1-UE8 can choose to continue monitoring, UE9-UE16 and UE17-UE24 stop monitoring, 111 means that the preamble or reference signal of these three groups does not exist, and UE1-UE24 do not need to continue monitoring.
  • the present application is described here as an example only, and not specifically limited.
  • each bit in the X bits corresponds to a Preamble group or a DMRS group.
  • each bit corresponds to a Preamble group.
  • UE1-UE8 select Preamble or reference signal group 1
  • UE9-UE16 select Preamble or reference signal group 2
  • UE17-UE24 select Preamble or reference signal group Group 3
  • the indication information is indicated by 3 bits, wherein 110 indicates that there will be a second response message for Preamble or reference signal group 1 and Preamble or reference signal group 2, but there is no preamble or reference signal group 3 second response message, then UE1 ⁇ UE8 can choose to continue monitoring, UE9 ⁇ UE16 can also choose to continue listening, UE17 ⁇ UE24 stop listening, 000 means that the preamble or reference signal of these 3 groups does not exist, UE1 ⁇ UE24 does not need to continue monitoring.
  • the first response message does not correspond to the first communication device because the first response message does not include the identifier of the Preamble sent by the first communication device and the first response message includes the identifier for identifying the first communication device.
  • Information such as the ID of the first communication device.
  • the first communication device may determine whether the first response message is aimed at the first communication device according to whether there is a corresponding Preamble identifier in the first response message.
  • the first communication device monitors the first response message within a preset time window, or, for the second response message, the second communication device sends the first response message within the preset time window, Or, the second response message.
  • the length of the preset time window of the first communication device may be the same as or different from the length of the preset time window of the second communication device, which is not specifically limited in this application.
  • the first information is random access information or authorization-free transmission data. Since different first communication devices and second communication devices may have established communication connections, it is only necessary to transmit data to the second communication device.
  • the first information sent by the first communication device may be data transmission without authorization, but the first The communication device may not establish a communication connection with the second communication device, so it is necessary to send random access information, which is not specifically limited in this application, and shall be determined in combination with actual application scenarios. It can be understood that the difference between the random access information and the authorization-free transmission data is that the random access information includes the Preamble, and the authorization-free transmission data does not include the Preamble.
  • the communication device 1100 may be a chip or a chip system.
  • the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.
  • the communication device 1100 may include at least one processor 1110, and the communication device 1100 may further include at least one memory 1120 for storing computer programs, program instructions and/or data.
  • the memory 1120 is coupled to the processor 1110 .
  • the coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • Processor 1110 may cooperate with memory 1120 .
  • Processor 1110 may execute computer programs stored in memory 1120 .
  • the at least one memory 1120 may also be integrated with the processor 1110 .
  • the communication device 1100 may or may not include the transceiver 1130 , which is indicated by a dotted box in the figure, and the communication device 1100 may exchange information with other devices through the transceiver 1130 .
  • the transceiver 1130 may be a circuit, a bus, a transceiver or any other device that can be used for information exchange.
  • the communication apparatus 1100 may be applied to the aforementioned terminal device, or may be the aforementioned first communication apparatus, or may also be the aforementioned second communication apparatus.
  • the memory 1120 stores necessary computer programs, program instructions and/or data for implementing the functions of the relay device in any of the above-mentioned embodiments.
  • the processor 1110 may execute the computer program stored in the memory 1120 to complete the method in any of the foregoing embodiments.
  • connection medium among the above-mentioned transceiver 1130, processor 1110, and memory 1120 is not limited in the embodiment of the present application.
  • the memory 1120, the processor 1110, and the transceiver 1130 are connected through a bus.
  • the bus is represented by a thick line in FIG. 11, and the connection mode between other components is only for schematic illustration. It is not limited.
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 11 , but it does not mean that there is only one bus or one type of bus.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or Execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
  • a general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • the memory may be a non-volatile memory, such as a hard disk (hard disk drive, HDD) or a solid-state drive (solid-state drive, SSD), etc., and may also be a volatile memory (volatile memory), such as Random-access memory (RAM).
  • the memory may also be, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • the memory in the embodiments of the present application may also be a circuit or any other device capable of implementing a storage function, for storing computer programs, program instructions and/or data.
  • the embodiment of the present application also provides another communication device 1200, including: an interface circuit 1210 and a logic circuit 1220; the interface circuit 1210 can be understood as an input and output interface, and can be used to implement The schematic input and output unit or the same operation steps as the transceiver shown in FIG. 11 will not be repeated in this application.
  • the logic circuit 1220 can be used to run the code instructions to execute the method in any of the above-mentioned embodiments, which can be understood as the processing unit in FIG. 10 or the processor in FIG. 11 , which can realize the same function as the processing unit or processor, This application will not go into details here.
  • the embodiments of the present application further provide a readable storage medium, the readable storage medium stores instructions, and when the instructions are executed, the method in any one of the above embodiments is executed.
  • the readable storage medium may include various mediums capable of storing program codes such as U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising the instruction device, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

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Abstract

本申请实施例提供一种数据传输方法及通信装置，涉及通信技术领域。第一通信装置可在第一资源发送第一信息；接收第一响应消息；第一响应消息对应第一资源，第一响应消息包括指示信息域，指示信息域用于指示是否还存在第二响应消息，第二响应消息对应第一资源；若第一响应消息未对应第一通信装置且指示信息域指示存在第二响应消息，继续监听第二响应消息。本申请中，第一通信装置在数据传输时，根据指示域中是否存在第二响应消息来确定是否继续监听第二响应消息，而非持续监听，通过该方式可以节约终端设备的功耗。

Description

一种数据传输方法及通信装置
相关申请的交叉引用
本申请要求在2021年05月26日提交中国专利局、申请号为202110580115.2、申请名称为“一种数据传输方法及通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术领域，尤其涉及一种数据传输方法及通信装置。
背景技术
传统的蜂窝网移动通信系统，如在第五代(5th generation，5G)长期演进(long term evolution，LTE)系统和5G新空口(new radio，NR)中，当终端处于空闲状态(idle state or idle mode)或非激活状态(inactive state or inactive mode)时，若终端将用户面(user plane，UP)数据向基站发送，终端先要执行随机接入(random access，RA)过程。
在RA过程中，终端会通过Msg1或MsgA(Msg为消息的简称)发送随机接入前导码(Preamble)等信息后，启动时间窗，并在时间窗内持续监听基站的响应消息，直到监听到基站针对该终端所发送的preamble的响应消息。但是基站在没有检测到Msg1或MsgA(例如信道条件差或终端发送功率小时)、基站检测到Msg1或MsgA但选择不进行响应时，终端仍会在整个时间窗内监听响应消息，该方式易出现无效监听，功耗浪费，增加重新触发随机接入的时延的情况。
发明内容
本申请提供一种数据传输方法及通信装置，以在RA过程中节约终端设备的功耗，提高随机接入的效率。
第一方面，本申请提供一种数据传输方法，该方法可通过第一通信装置与第二通信装置的交互来实现。其中，第一通信装置可以为终端设备，如：用户设备(user equipment，UE)、车载设备等，第二通信装置可以为传输接收点(transmission reception point，TRP)、5G基站(gNodeB，gNB)等，本申请在此不作具体限定。
在执行本申请的数据传输方法时，第一通信装置可在第一资源发送第一信息，相应的第二通信装置可在第一资源接收第一信息，之后第二通信装置可发送第一响应消息，该第一响应消息对应第一资源，第一响应消息包括指示信息域，指示信息域用于指示是否还存在第二响应消息，第二响应消息也对应第一资源；相应的第一通信装置可接收第一响应消息。若指示信息域中存在第二响应消息，第二通信装置则发送第二响应消息。若第一响应消息未对应第一通信装置且指示信息域指示存在第二响应消息，第一通信装置则继续监听第二响应消息。
需要说明的是，第一资源可以理解为时频资源，不同的第一通信装置均可在该时域资源传输消息，如：UE1、UE2以及UE3均在第一资源发送第一信息。另外，该时频资源可 以包含多个时域相同但频域不同的资源，也可以包含多个频域相同但是时域不同的资源，还可以包含多个时域和频域都不相同的资源，本申请在此不作具体限定，这种情况下，UE可以选择其中之一发送第一信息。上述的第一信息可以为第一通信装置向第二通信装置传输的数据或者为第一通信装置与第二通信装置创建通信连接(如无线资源控制(radio resource control，RRC)连接)的接入信息，本申请在此不作具体限定。这里的时域相同是指时域资源完全重叠，频域相同是指频域资源完全重叠，时域不同是指时域资源部分重叠或完全不重叠，频域不同是指频域资源部分重叠或完全不重叠。
还要说明的是，在实际应用时，可能存在多个第一通信装置向第二通信装置传输数据，或与第二通信装置建立通信连接，那么第二通信装置可能会接收到多个第一消息。之后第二通信装置发送针对多个第一消息的第一响应消息，各第一通信装置根据第一响应消息中指示信息域的指示信息确定是否继续监听。例如，UE1监听来自gNB的第一响应消息，发现第一响应消息并非针对UE1，但是第一响应消息中指示存在第二响应消息，那么UE1则继续监听。UE2监听来自gNB的第一响应消息，若第一响应消息是针对UE2，那么UE2则停止监听。
本申请相对于在整个监听周期内持续监听响应消息而言，第一响应消息中携带指示信息域指示是否存在第二响应消息，第一通信装置可以根据第二响应消息的存在情况确定是否继续监听。当第一通信装置确定不存在第二响应消息时，即确定第二通信装置不会再发送第二响应消息时，停止监听，可以节约功耗，还可以重新发送数据或者与第二通信装置建立连接，提高数据处理效率和接入效率。
在一种可选的方式中，若第一响应消息对应于第一通信装置，或者，若第一响应消息未对应第一通信装置且指示信息域指示不存在第二响应消息，停止监听。
例如，UE1监听来自gNB的第一响应消息，发现第一响应消息是针对UE1，UE1则停止监听，或者UE1确定第二响应消息不存在，也停止监听。通过该方式可以节约第一通信装置的功耗。
在一种可选的方式中，指示信息域包括一个比特。该比特可以指示第二通信装置是否会下发第二响应消息。如指示信息域通过1指示第二通信装置会下发第二响应消息，通过0指示第二通信装置不会下发第二响应消息，也可通过其他方式指示，本申请在此不作具体限定。那么第一通信装置在接收到第一响应消息后可根据指示信息域比特位的取值确定是否继续监听，例如，UE1接收到第一响应消息，且该第一响应消息不是针对UE1的，那么UE1则确定指示信息域比特位的取值，若为1，则继续监听，若为0，则停止监听，通过该方式可节约第一通信装置的功耗。
在一种可选的方式中，指示信息域包括X个比特，X个比特指示多个Preamble或多个参考信号信息，X>＝2，X个比特对应的取值中包括一个指示不存在第二响应消息的取值。这里的参考信号可以是解调参考信号(demodulation reference signal，DMRS)或探测参考信号(sounding reference signal，SRS)等。
需要说明的是，在实际应用时，可将Preamble或参考信号进行分组，通过指示信息域中的一个或多个比特来指示针对某个Preamble组或参考信号组是否存在第二响应消息。例如，UE1～UE8选择了Preamble或参考信号组1中的Preamble或参考信号发送第一信息，UE9～UE16选择了Preamble或参考信号组2中的Preamble或参考信号发送第一信息，UE17～UE24选择了Preamble或参考信号组3中的Preamble或参考信号发送第一信息，指 示信息通过3个比特来指示是否存在针对这些Preamble或参考信号组的第二响应消息，例如，000指示还会存在针对Preamble或参考信号组1和Preamble或参考信号组2的第二响应消息，而不存在针对Preamble或参考信号组3的第二响应消息，那么UE1～UE8可以选择继续监听，UE9～UE16也可以选择继续监听，UE17～UE24则停止监听；001指示还会存在针对Preamble或参考信号组1的第二响应消息，而不存在针对Preamble或参考信号组2和Preamble或参考信号组3的第二响应消息，UE1～UE8可以选择继续监听，UE9～UE16和UE17～UE24则停止监听，111则表示这3个组的Preamble或参考信号都不存在，UE1～UE24都不需要继续监听。本申请在此仅作示例性描述，并不作具体限定。
在一种可选的方式中，X个比特中每个比特对应一个Preamble组或者一个DMRS组。在此仅以每个比特对应一个Preamble组为例来说明，如，UE1～UE8选择了Preamble或参考信号组1，UE9～UE16选择了Preamble或参考信号组2，UE17～UE24选择了Preamble或参考信号组3，指示信息于通过3个比特来指示，其中，110指示还会存在针对Preamble或参考信号组1和Preamble或参考信号组2的第二响应消息，而不存在针对Preamble或参考信号组3的第二响应消息，那么UE1～UE8可以选择继续监听，UE9～UE16也可以选择继续监听，UE17～UE24则停止监听，000则表示这3个组的Preamble或参考信号都不存在，UE1～UE24都不需要继续监听。
在一种可选的方式中，第一响应消息未对应第一通信装置为第一响应消息未包括第一通信装置发送的Preamble的标识以及第一响应消息为包括用于标识第一通信装置的信息，如第一通信装置的ID等。本申请中第一通信装置可根据第一响应消息中是否存在其对应的Preamble标识来确定第一响应消息是否针对第一通信装置。
在一种可选的方式中，第一通信装置在预设的时间窗内监听第一响应消息，或，第二响应消息，第二通信装置在预设的时间窗内发送第一响应消息，或，第二响应消息。其中，第一通信装置的预设时间窗的长度可以与第二通信装置预设的时间窗的长度相同也可以不同，本申请在此不作具体限定。
在一种可选的方式中，第一信息为随机接入信息或免授权传输数据。由于不同的第一通信装置与第二通信装置可能已经创建通信连接，因此仅需向第二通信装置传输数据即可，第一通信装置发送的第一信息可以为免授权传输数据，但是第一通信装置与第二通信装置可能并未创建通信连接，因此需要发送随机接入信息，本申请在此并不具体限定，具体要结合实际应用场景进行确定。可以理解，随机接入信息和免授权传输数据之间的区别在于，随机接入信息中包含Preamble，免授权传输数据中不包含Preamble。
第二方面，本申请提供一种第一通信装置，包括：输入输出单元和处理单元。
其中，输入输出单元，用于在第一资源发送第一信息；以及接收第一响应消息；第一响应消息对应第一资源，第一响应消息包括指示信息域，指示信息域用于指示是否还存在第二响应消息，第二响应消息对应第一资源；处理单元，用于若第一响应消息未对应第一通信装置且指示信息域指示存在第二响应消息，继续监听第二响应消息。
在一种可选的方式中，处理单元还用于：若第一响应消息对应于第一通信装置，或者，若第一响应消息未对应第一通信装置且指示信息域指示不存在第二响应消息，停止监听。
在一种可选的方式中，指示信息域包括一个比特。
在一种可选的方式中，指示信息域包括X个比特，X个比特指示多个前导码Preamble或多个参考信号信息，X>＝2，X个比特对应的取值中包括一个指示不存在第二响应消息的 取值。
在一种可选的方式中，X个比特中每个比特对应一个Preamble或参考信号组。
在一种可选的方式中，第一响应消息未对应第一通信装置为第一响应消息未包括第一通信装置发送的Preamble标识或第一通信装置的标识。
在一种可选的方式中，在预设的时间窗内监听第一响应消息，或，第二响应消息。
在一种可选的方式中，第一信息为随机接入信息或免授权传输数据。
第三方面，本申请提供一种第二通信装置，包括：输入输出单元和处理单元。
其中，输入输出单元，用于在第一资源接收第一信息；以及发送第一响应消息；第一响应消息对应第一资源，第一响应消息包括指示信息域，指示信息域用于指示是否还存在第二响应消息，第二响应消息对应第一资源；
处理单元，用于若指示信息域中存在第二响应消息，则发送第二响应消息。
在一种可选的方式中，指示信息域包括一个比特。
在一种可选的方式中，指示信息域包括X个比特，X个比特表示多个Preamble或多个参考信号信息，X>＝2，X个比特对应的取值中包括一个指示不存在第二响应消息的取值。
在一种可选的方式中，X个比特中每个比特对应一个Preamble或参考信号组。
在一种可选的方式中，在预设的时间窗内发送第一响应消息，或，第二响应消息。
在一种可选的方式中，第一信息为随机接入信息或免授权传输数据。
第四方面，本申请提供一种通信装置，包括至少一个处理器和存储器；该存储器用于存储计算机程序或指令，当该装置运行时，该至少一个处理器执行该计算机程序或指令，以使该通信装置执行如上述第一方面或第一方面的各实施例的方法。
第五方面，本申请提供另一种通信装置，包括：接口电路和逻辑电路；其中接口电路，可以理解为输入输出接口，逻辑电路可用于运行代码指令以执行上述第一方面或第一方面的各实施例的方法。
第六方面，本申请还提供一种计算机可读存储介质，计算机可读存储介质中存储有计算机可读指令，当计算机可读指令在计算机上运行时，以使得计算机执行如第一方面或第一方面中任一种可能的设计中的方法。
第七方面，本申请提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面或第一方面的各实施例的方法。
第八方面，本申请提供了一种芯片系统，该芯片系统包括处理器，还可以包括存储器，用于实现上述第一方面或第一方面中任一种可能的设计中所述的方法。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
第九方面，本申请提供了一种通信系统，所述系统包括第一通信装置以及第二通信装置，所述通信系统用于执行上述第一方面或第一方面中任一种可能的设计中所述的方法。
上述第二方面至第九方面可以达到的技术效果，请参照上述第一方面中相应可能设计方案可以达到的技术效果说明，本申请这里不再重复赘述。
附图说明
图1A示出了本申请实施例提供的一种通信系统的示意图；
图1B示出了本申请实施例提供的另一种通信系统的示意图；
图2示出了一种数据传输方法的示意图；
图3示出了2-step RA的流程示意图；
图4示出了4-step RA的流程示意图；
图5示出了本申请实施例提供的数据传输方法的流程示意图；
图6示出了本申请实施例提供的数据传输方法应用场景的示意图；
图7示出了本申请实施例提供的数据传输方法应用场景的示意图；
图8示出了本申请实施例提供的数据传输方法应用场景的示意图；
图9示出了本申请实施例提供的数据传输方法应用场景的示意图；
图10示出了本申请实施例提供的通信装置的结构示意图；
图11示出了本申请实施例提供的通信装置的结构示意图；
图12示出了本申请实施例提供的通信装置的结构示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述。方法实施例中的具体操作方法也可以应用于装置实施例或系统实施例中。其中，在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。因此装置与方法的实施可以相互参见，重复之处不再赘述。
本申请可应用于5G NR系统，也可以应用于其它的通信系统，如下一代通信系统等。如图1A所示，第二通信装置为网络设备，第一通信装置为终端设备(如UE)时，网络设备和UE1～UE6组成一个通信系统。在该通信系统中，UE1～UE6可以发送信息给网络设备，网络设备可接收UE1～UE6发送的信息，并回馈响应消息。
此外，UE4～UE6也可以组成一个通信系统，此时，第一通信装置和第二通信装置还可以都是终端设备，例如车联网系统中，终端设备1向终端设备2发送配置信息，并且接收终端设备2发送的数据；而终端设备2接收终端设备1发送的配置信息，并向终端设备1发送数据。
本申请可应用的通信系统还可以如图1B所示，该通信系统中存在中继节点的单跳(single-hop)或多跳(multi-hop)中继。其中，中继节点可以是小站、接入回传一体化(integrated access and backhauling，IAB)节点、分布式单元(distributed unit，DU)、终端设备、收发点(transmitter and receiver point，TRP)等，本申请在此不再赘述。
上述的网络设备为是一种部署在无线接入网中为终端设备提供无线通信功能的装置。接入网设备具有无线收发功能的设备或可设置于该设备的芯片，该设备包括但不限于：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(baseband unit，BBU)，无线保真(wireless fidelity，WIFI)系统中的接入点(access point，AP)、无线中继节点、无线回传节点、传输点(transmission and reception point，TRP或者transmission point，TP)等，还可以为5G(如NR)系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)、DU、卫星、无人机等。
在一些部署中，gNB可以包括集中式单元(centralized unit，CU)和DU。gNB还可以包括射频单元(radio unit，RU)。CU实现gNB的部分功能，DU实现gNB的部分功能， 比如，CU实现RRC，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能，DU实现无线链路控制(radio link control，RLC)、媒体接入控制(media access control，MAC)和物理(physical，PHY)层的功能。由于RRC层的信息最终会变成PHY层的信息(即通过PHY层发送)，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令或PDCP层信令，也可以认为是由DU发送的，或者，由DU+RU发送的。可以理解的是，接入网设备可以为CU节点、或DU节点、或包括CU节点和DU节点的设备。此外，CU可以划分为接入网RAN中的网络设备，也可以将CU划分为核心网CN中的网络设备，在此不做限制。
本申请实施例中所涉及的终端设备，又可以称之为终端，是用户侧的一种用于接收或发射信号的实体，用于向网络设备发送上行信号，或从网络设备接收下行信号。包括向用户提供语音和/或数据连通性的设备，例如可以包括具有无线连接功能的手持式设备、或连接到无线调制解调器的处理设备。该终端设备可以经无线接入网(radio access network，RAN)与核心网进行通信，与RAN交换语音和/或数据。该终端设备可以包括UE、V2X终端设备、无线终端设备、移动终端设备、设备到设备通信(device-to-device，D2D)终端设备、机器到机器/机器类通信(machine-to-machine/machine-type communications，M2M/MTC)终端设备、物联网(internet of things，IoT)终端设备、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、远程站(remote station)、接入点(access point，AP)、远程终端(remote terminal)、接入终端(access terminal)、用户终端(user terminal)、用户代理(user agent)、或用户装备(user device)、可穿戴设备、车载设备、无人机等。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备或智能穿戴式设备等，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能头盔、智能首饰等。
而如上介绍的各种终端设备，如果位于车辆上(例如放置在车辆内或安装在车辆内)，都可以认为是车载终端设备，车载终端设备例如也称为车载单元(on-board unit，OBU)。
需要说明的是，在上述图1A和图1B所示的通信系统中，如果终端有UP数据需要向基站发送，则终端先要执行随机接入RA过程，进入激活/连接状态(Active/Connected State or Active/Connected Mode)，然后通过物理上行控制信道(physical uplink control channel，PUCCH)向基站发送调度请求(Scheduling Request，SR)或通过物理上行共享信道(physical uplink shared channel，PUSCH)向基站上报缓存状态(buffer state，BS)。基站收到终端发送的SR或缓存状态报告(buffer state report，BSR)后，通过下行物理控制信道(physical downlink control channel，PDCCH)向终端发送下行控制信息(downlink control information，DCI)，DCI中携带上行授权(UL Grant)，用于授权终端在指定的时频资源上使用指定的参数，如指定的调制编码方案(modulation and coding scheme，MCS)等发送上行数据，该过程如图2所示。缓存状态报告通常通过媒体接入控制(medium access control，MAC) 层信令发送，携带在数据包包头的MAC控制元素(control element，CE)中。
还要说明的是，随机接入通常可以分为两类，一类是两步随机接入2-step RA(如图3所示)，一类是四步随机接入4-step RA(如图4所示)。
其中，2-step RA中，终端向基站发送MsgA，MsgA由物理随机接入信道(physical random access channel，PRACH)和PUSCH组成，其中PRACH用于发送随机接入前导Preamble，PUSCH用于发送控制面(control plane，CP)和/或用户面数据；基站接收到MsgA之后，向终端发送MsgB，其中，如果基站正确解码出MsgA中的PUSCH，MsgB称为success RAR，其中包含竞争解决(contention resolution)消息，如果基站没有正确解码PUSCH，MsgB称为fallback(回退)RAR，终端接收到fallback RAR后，会根据其中所携带的上行授权(UL grant)，回退到4-step RA，向基站发送Msg3。
其中，4-step RA中，终端先通过PRACH向基站发送Preamble，即Msg1；基站接收到Msg1后，向终端发送RAR，即Msg2；终端根据RAR中所包含的UL grant，向基站发送Msg3，Msg3中携带控制面和/用户面数据；基站正确接收Msg3后，向终端发送竞争解决消息，即Msg4，Msg4中也可以携带控制面和/或用户面数据。当Msg3或Msg4中携带用户面数据时，4-step RA又可以称为数据早传(early data transmission，EDT)。
简单的说，2-step RA中的MsgA可以看作是4-step RA中的Msg1和Msg3的合并，而MsgB可以看作是Msg2和Msg4的合并，因此，相比4-step RA，2-step RA可以实现较低的接入时延和终端功耗。
根据终端是否使用竞争的方式使用随机接入资源，随机接入又可以分为基于竞争的随机接入(contention-based RA，CBRA)和基于非竞争的随机接入(contention-free RA，CFRA)。对于CBRA，通常是基站通过公共无线资源控制(radio resource control，RRC)信令如系统消息(system information，SI)下发随机接入资源分配指令，为终端的随机接入配置PRACH资源池和Preamble资源池，终端执行随机接入时，分别从配置的PRACH资源池和Preamble资源池中选择一个PRACH和Preamble，在所选的PRACH资源上发送所选择的Preamble。如果是2-step RA，终端还会在所选择的PRACH和Preamble所关联的PUSCH资源上发送控制面和/或用户面数据，其中，PUSCH资源也是基站通过公共RRC信令如系统消息SI配置的。PUSCH资源之所以要与PRACH资源和Preamble进行关联，目的是为了降低基站盲检测的复杂度，基站知晓这个关联关系后可以根据检测到的Preamble，确定PUSCH资源，从而可以直接进行PUSCH接收和解调，避免PUSCH盲检测或减少盲检测次数。CBRA中，不同的终端可能选择相同的PRACH资源和Preamble，进行竞争的随机接入。对于CFRA，终端在进行随机接入时，不存在竞争关系，因为基站通常会通过专用信令如RRC消息或DCI指示终端进行随机接入所使用的PRACH资源和/或Preamble。
对于CBRA，终端发送Msg1或MsgA后，会启动响应时间窗(下文简称时间窗)，并在时间窗内监听来自基站的响应消息，即Msg2或MsgB。具体的监听方法通常是，终端根据发送Preamble的PRACH资源确定一个无线网络临时标识(radio network temporary identity，RNTI)，并使用该RNTI在时间窗内监听用于调度Msg2或MsgB的PDCCH，根据PDCCH的指示进一步接收Msg2或MsgB。以4-step RA为例，当多个终端选择相同的PRACH资源上发送Preamble时，该多个终端所确定的RNTI是相同的，并且会在相同的时间窗内使用该RNTI监听用于调度Msg2的PDCCH，这种情况下，终端需要通过Msg2中所携带的Preamble标识(random access preamble identifier，RAP ID)来确定所接收到的 Msg2是否是针对该终端的。例如当某个终端监听到PDCCH并且正确解码了该PDCCH所调度的Msg2时，如果确定Msg2接收到的Msg2中所携带的RAP ID与该终端发送的Preamble的ID相同，则终端认为该响应是针对它的，则终端停止时间窗，根据该响应所携带的UL grant的指示，发送Msg3。而当出现如下情形之一时，终端会继续使用所确定的RNTI监听PDCCH，直到时间窗结束：终端监听到PDCCH但未正确解码所调度的Msg2、终端解码Msg2但是发现其中没有携带与该终端发送的Preamble ID相同的RAPID。如果直到时间窗结束，终端也未能正确接收到针对该终端的Msg2，终端可以重新选择PRACH资源和Preamble，再次发送Msg1。对于2-step RA，情形与4-step RA类似，区别在于，终端发送了MsgA之后，接收到的可能是针对该终端发送的Preamble的fallback RAR，也有可能时针对该终端的success RAR，对于前者，情形与4-step RACH相同，而对于后者，success RAR中携带的不是RAP ID，而是终端在MsgA中发送的竞争解决CR ID，即如果终端判断MsgB携带的CR ID与终端在MsgA中发送的CR ID相同，则该终端认为该MsgB是针对该终端的，终端会停止时间窗。这里的CR ID也可以理解为用于标识终端的ID。而当出现如下情形之一时，终端会继续使用所确定的RNTI监听PDCCH，直到时间窗结束：
终端监听到PDCCH但未正确解码所调度的MsgB、终端解码MsgB但是发现其中没有携带与该终端发送的Preamble ID相同的RAPID且没有与该终端发送的CR ID相同的CR ID。
如果直到时间窗结束，终端也未能正确接收到针对该终端的MsgB，终端可以重新选择PRACH资源和Preamble，再次发送Msg1或MsgB。
另外，不管是哪种随机接入方式，终端都需要通过PRACH信道向基站发送Preamble，为了让基站对终端的时间提前量(timing advance，TA)进行估计。而在某些场景下，例如终端已经获取了准确的TA，或者小区半径较小时，并不需要每次数据传输之前都需要重新获取TA，这种情况下，每次都发送Preamble实际增加了终端的功耗。为此，第三代合作伙伴计划(3rd generation partnership project，3GPP)引入了空闲态和非激活态的上行免授权(grant free，GF)传输，例如基于预配置上行资源(pre-configured uplink resource，PUR)传输和配置的授权(configured grant，CG)传输(如Type 1CG)。这两种GF传输都是基站通过RRC信令，例如可以是系统消息或其他专用RRC信令等，为终端的上行传输配置包括如下参数中的一种或多种：时域资源的周期、开环功控相关参数、波形、冗余版本序列、重复次数、跳频模式、资源分配类型、混合自动重传请求(hybrid automatic repeat request，HARQ)进程数、解调用参考信号(demodulation reference signal，DMRS)相关参数、调制编码方案表格、资源块(resource block group，RBG)组大小、以及时域资源、频域资源、MCS等。终端接收到该配置信息后，如果有数据需要传输，可立即使用所配置传输参数在配置的时频资源上进行PUSCH传输，而不必先发送Preamble，从而达到节省开销和功耗的目的。GF传输的响应监听也可以采用与随机接入相同的机制，即，终端根据发送PUSCH的资源的信息确定RNTI，然后使用RNTI在时间窗内监听响应消息等。
当出现如下情形时，基站不会对终端发送的Msg1或MsgA进行响应：基站没有检测到Msg1或MsgA(例如信道条件很差或终端发送功率很小时)、基站检测到Msg1或MsgA但选择不进行响应。这两种情况下，由于终端并不知晓，因此仍会在整个时间窗内监听可能的响应消息，造成无效监听，导致浪费功耗，并且增加重新触发随机接入的时延，基于此，本申请提出一种新的数据传输方法来降低终端设备的功耗，提高随机接入的效率。
本申请实施例的描述中，“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“三种一般表示前后关联对象是一种“或”的关系。本申请中所涉及的至少一个是指一个或多个；多个，是指两个或两个以上。另外，需要理解的是，在本申请的描述中，“第一”、“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。
本申请提供的数据传输方法，可应用于第一通信装置，也可应用于第二通信装置，还可通过第一通信装置与第二通信装置的交互来实现，本申请在此不作具体限定。图5示出了第一通信装置和第二通信装置交互来实现数据传输的过程，图中以第一通信装置为UE1、UE2以及UE3，第二通信装置为gNB为例进行示例性描述，具体可执行如下：
步骤501A，UE1在第一资源发送第一信息。
步骤501B，UE2在第一资源发送第一信息。
步骤501C，UE3在第一资源发送第一信息。
相应地，gNB接收来自UE1～UE3的第一信息。另外上述的步骤501A～步骤501C的执行顺序不分先后，只要保证第一资源为相同的时频资源即可。第一资源可以是一个时频资源，也可以是包含多个时域相同但频域不同、或频域相同但时域不同、或时域和频域都不相同的资源的集合，这种情况下，UE可以选择其中之一发送第一信息。不同的UE均可在第一资源传输消息，如：UE1、UE2以及UE3均在时隙1中发送第一信息。上述的第一信息可以为UE传输的数据如免授权传输数据或者为UE与gNB创建通信连接的接入信息例如，随机接入信息，可以理解为上述的Msg1或MsgA，本申请在此不作具体限定。
步骤502，gNB发送第一响应消息至UE1、UE2、UE3。
相应地，UE1～UE3可接收来自gNB的第一响应消息。该第一响应消息对应第一资源，第一响应消息包括指示信息域，指示信息域用于指示是否还存在第二响应消息，第二响应消息也对应第一资源。若指示信息域中存在第二响应消息，gNB则发送第二响应消息。
步骤503A，UE1若确定第一响应消息未对应UE1且指示信息域指示存在第二响应消息，UE1则继续监听第二响应消息。需要说明的是，在第一信息为Msg1时，第一响应消息未对应UE1可以理解为第一响应消息未包括UE1发送的Preamble的标识，在第一信息为MsgA时，第一响应消息未对应UE1可以理解为第一响应消息未包括UE1发送的Preamble的标识且未包含UE1的标识。
步骤503B，UE2若确定第一响应消息对应UE2则停止监听。
步骤503C，UE3若确定第一响应消息未对应UE3且指示信息域指示不存在第二响应消息，UE3则停止监听。
上述步骤503A～503C仅作示例性描述，并不具体限定步骤的执行顺序。
还要说明的是，UE可在预设的时间窗内监听第一响应消息，或，第二响应消息，gNB也可在预设的时间窗内发送第一响应消息，或，第二响应消息。其中，UE的预设时间窗的长度可以与gNB预设的时间窗的长度相同也可以不同，本申请在此不作具体限定。
本申请相对于在整个监听周期内持续监听响应消息而言，第一响应消息中携带指示信息域指示是否存在第二响应消息，第一通信装置可以根据第二响应消息的存在情况确定是否继续监听，当第一通信装置确定不存在第二响应消息时，停止监听，可以节约功耗，还可以重新发送数据或者与第二通信装置建立连接，提高数据处理效率和接入效率。
在一种可选的方式中，指示信息域可包括一个比特。该比特可以指示gNB是否会下发第二响应消息。如指示信息域通过1指示gNB会下发第二响应消息，通过0指示gNB不会下发第二响应消息，也可通过其他方式指示，本申请在此不作具体限定。那么UE在接收到第一响应消息后可根据指示信息域比特位的取值确定是否继续监听，例如，UE1接收到第一响应消息，且该第一响应消息不是针对UE1的，那么UE1则确定指示信息域比特位的取值，若为1，则继续监听，若为0，则停止监听，或者反之以0表示继续监听而1表示停止监听，效果等同，以下不再赘述，通过该方式可节约第一通信装置的功耗。
在一种可选的方式中，指示信息域可包括X个比特，用来指示至少一个UE的ID。
在一种可选的方式中，指示信息域可包括X个比特，X个比特指示多个Preamble，X>＝2，X个比特对应的取值中包括一个指示不存在第二响应消息的取值。gNB可直接指示针对哪些Preamble存在第二响应消息，如，针对Preamble1、Preamble3、Preamble5存在第二响应消息。
需要说明的是，在实际应用时，第一信息若为Msg1或MsgA，可将Preamble进行分组(例如，将Preamble1～Preamble8分为Preamble组1，将Preamble16～Preamble24分为Preamble组2，将Preamble48～Preamble56分为Preamble组3等，此外还可能存在其他分组方式本申请在此不具体限定，本申请也不限定UE选择哪个Preamble组的Preamble发送第一信息)，通过指示信息域中的一个或多个比特来指示针对某个Preamble组是否存在第二响应消息。如表1所示，UE1～UE8选择了Preamble组1中的Preamble发送第一信息，UE9～UE16选择了Preamble组2中的Preamble发送第一信息，UE17～UE24选择了Preamble组3中的Preamble发送第一信息，指示信息通过3个比特来指示是否存在针对这些Preamble组的第二响应消息，例如，000指示还会存在针对Preamble组1和Preamble组2的第二响应消息，而不存在针对Preamble组3的第二响应消息，那么UE1～UE8可以选择继续监听，UE9～UE16也可以选择继续监听，UE9～UE16则停止监听。本申请在此仅作示例性描述，并不作具体限定，表1在此仅作示例性描述，并不具体限定具体采用哪些比特值来指示哪些Preamble组是否存在第二响应消息。
表1
Figure PCTCN2022089920-appb-000001
此外，X个比特中每个比特可对应一个Preamble组。在此以指示信息域通过1指示gNB会下发针对Preamble组的第二响应消息，通过0指示gNB不会下发针对Preamble组的第二响应消息为例来说明。例如，UE1～UE8选择了Preamble组1中的Preamble发送第一信息，UE9～UE16选择了Preamble组2中的Preamble发送第一信息，UE17～UE24选择 了Preamble组3中的Preamble发送第一信息，指示信息于通过3个比特来指示，其中，第一个比特位用于指示是否存在针对Preamble组1的第二响应消息，第二个比特位用于指示是否存在针对Preamble组2的第二响应消息，第三个比特位用于指示是否存在针对Preamble组3的第二响应消息，如表2所示，其中，110指示Preamble组1存在第二响应消息，Preamble组2存在第二响应消息，Preamble组3不存在第二响应消息，那么的UE1～UE8可继续监听，UE9～UE16也可继续监听，UE9～UE16则停止监听，表2在此仅作示例性描述，并不具体限定具体采用哪些比特值来指示哪个Preamble组是否存在第二响应消息。
表2
Figure PCTCN2022089920-appb-000002
在实际应用时，第一信息若为免授权传输数据，可将多个参考信号如DMRS进行分组，指示信息域可包括X个比特，X个比特指示多个DMRS，X>＝2，X个比特对应的取值中包括一个指示不存在第二响应消息的取值。gNB可直接指示针对哪些DMRS存在第二响应消息，如，针对DMRS1、DMRS3、DMRS5存在第二响应消息。
此外，可将DMRS进行分组(例如，将DMRS1～DMRS8分为DMRS组1，将DMRS16～DMRS24分为DMRS组2，将DMRS48～DMRS56分为DMRS组3等，此外还可能存在其他分组方式本申请在此不具体限定，本申请也不限定UE选择哪个DMRS组的DMRS发送第一信息)。如表3所示，UE1～UE8选择了DMRS组1中的DMRS发送第一信息，UE9～UE16选择了DMRS组2中的DMRS发送第一信息，指示信息域通过2个比特来指示，其中，00指示还会存在针对DMRS组1的第二响应消息，而不存在针对DMRS组2的第二响应消息，那么UE1～UE8可以继续监听，UE9～UE16则停止监听；10指示不存在针对DMRS组1和不存在DMRS组2的第二响应消息，那么UE1～UE8则停止监听，UE9～UE16也停止监听。本申请在此仅作示例性描述，并不作具体限定。
表3
Figure PCTCN2022089920-appb-000003
Figure PCTCN2022089920-appb-000004
此外，多个比特中每个比特可对应一个DMRS组。在此以指示信息域通过1指示gNB会下发针对DMRS组的第二响应消息，通过0指示gNB不会下发针对DMRS组的第二响应消息为例来说明。例如，UE1～UE8选择了DMRS组1中的DMRS发送第一信息，UE9～UE16选择了DMRS组2中的DMRS发送第一信息，UE17～UE24选择了DMRS组3中的DMRS发送第一信息。指示信息于通过3个比特来指示，其中，第一个比特位用于指示是否还会存在针对DMRS组1的第二响应消息，第二个比特位用于指示是否还会存在针对DMRS组2的第二响应消息，第三个比特位用于指示是否还会存在针对DMRS组3的第二响应消息，如表4所示，其中，110指示还会存在针对DMRS组1和DMRS组2的第二响应消息，而不存在针对DMRS组3的第二响应消息，那么UE1～UE8可以继续监听，UE9～UE16也可以继续监听，UE9～UE16则停止监听。
表4
Figure PCTCN2022089920-appb-000005
为了更好地说明本申请的方案，下面结合第一信息为随机接入信息或免授权传输数据，以及指示信息域指示不同的信息来说明，具体如下：
情况1.1、第一信息为随机接入信息，指示信息域通过比特位的不同取值指示是否发送第二响应消息
首先以第一通信装置为终端，第二通信装置为基站来简要说明在实际应用中本申请实施例可能涉及的执行流程。
步骤一：终端接收基站下发的配置信息，终端可根据配置信息确定可用的PRACH资源和Preamble资源。基站可以通过RRC消息(例如系统消息)或PDCCH或MAC CE下发配置信息。对于2-step RA，配置信息中还包括PUSCH的资源配置。
上述PRACH资源指的是PRACH时频资源，Preamble资源可以为以下序列中的一个：
序列1：ZC序列，由根序列索引u、循环移位间隔Ncs、循环移位索引v确定。
序列2：m序列，长度为2 m-1(m>1)的M序列可以定义为
Figure PCTCN2022089920-appb-000006
其中，
Figure PCTCN2022089920-appb-000007
其中，
Figure PCTCN2022089920-appb-000008
Figure PCTCN2022089920-appb-000009
序列3：PN序列，5G NR系统应用的PN序列由长为31的Gold序列产生。
c(n)＝(x 1(n+N C)+x 2(n+N C))mod 2
x 1(n+31)＝(x 1(n+3)+x 1(n))mod 2
x 2(n+31)＝(x 2(n+3)+x 2(n+2)+x 2(n+1)+x 2(n))mod 2
其中，c(n)为产生的PN序列，长度为M PN，n＝0,1,...,M PN-1，N C＝1600，第一个M序列的x 1(n)初始值为x 1(0)＝1,x 1(n)＝0,n＝1,2,...,30，第二个M序列x 2(n)的初始值为
Figure PCTCN2022089920-appb-000010
序列4：DFT序列，DFT序列可以看作DFT矩阵中的一行或一列，DFT矩阵的元素定义为x pq＝ω -pq，其中ω＝e -2πi/N，N为序列长度，i为虚数单位，i2＝-1。
序列5：Alltop序列，Alltop序列定义为c(γ,ω)＝g(γ,ω)，例如
Figure PCTCN2022089920-appb-000011
0≤n≤L-1，0≤ω≤L-1。
序列6：Gold序列，Gold序列是两个M序列的模二和。
在实际应用时也并不限仅仅为上述的序列，还可以为其他序列，在此不一一说明。
步骤二：终端在步骤一中所确定的PRACH资源和Preamble资源中选择一个PRACH和一个Preamble，向基站发送Msg1或MsgA，并确定RNTI。终端可以根据所选择的PRACH的时频资源确定RNTI，也可以在基站下发的配置信息中获取RNTI，本申请在此不作具体限定。另外，上述终端根据PRACH时频资源确定RNTI的一种实现方式可以参照TS 38.3215.1.3节或5.1.3a来确定。
步骤三：终端发送Msg1或MsgA后，启动时间窗，并在时间窗内使用步骤二所确定的RNTI监听PDCCH，并接收PDCCH所调度的PDSCH(PDSCH中携带RAR)。
步骤四：终端在所监听到的PDCCH或所接收到的PDSCH中获取指示信息域，并根据指示信息域确定是否继续使用所确定的RNTI监听PDCCH。
上述步骤三和步骤四中，指示信息域可以携带在PDCCH中，也可以携带在PDCCH所调度的PDSCH中，例如MAC CE中。上述图3和图4的介绍的PDSCH所携带的RAP ID或CR ID，用于反馈基站当前发送的PDSCH所包含的RAR是针对哪个Preamble或哪个终端的。终端发现RAP ID或CR ID不同于所发送的Preamble的ID或CR ID时(即该PDSCH不是针对该终端发送的Preamble或不是针对该终端的)，终端还会在时间窗内继续监听PDCCH。而本申请通过指示信息域指示基站是否还会继续下发响应消息或指示终端是否继续监听响应消息(即监听PDCCH)，对应的终端行为也不同，即使终端发现RAPID或CR ID不同于所发送的Preamble的ID或CR ID时，如果该指示信息指示基站不会再下发响应消息或指示终端停止监听响应消息，终端也会停止监听PDCCH。
指示信息域可以只包含一个比特，取值为1时，表示基站在时间窗内有可能还会下发响应消息，此时，对应的终端继续在时间窗内监听PDCCH；取值为0则表示基站在时间窗内不会再下发响应消息，对应的终端停止时间窗，不再监听PDCCH。此外，指示信息域还可以如上述表1或表2所示指示各Preamble组是否监听第二响应消息(也即监听PDCCH)。
步骤五：如果终端根据获取的指示信息域确定不继续使用所确定的RNTI监听PDCCH，则终端不再监听PDCCH。
图6以4-step RACH为例，来说明情况1.1，假设三个终端(UE1、UE2、UE3)在同一个PRACH时频资源上分别发送了三个不同的Preamble(P1、P2、P3)，基站仅检测出P1和P2，未检测出P3。假设基站先下发针对P1的响应消息，响应消息中携带1比特指示域信息，且指示域信息为1，表示基站还会下发响应消息，则UE2和UE3获取该指示域信息后，还会继续监听PDCCH。基站继续下发针对P2的响应消息，响应消息中携带1比特指示信息，并置为0，表示基站停止下发响应消息，则UE3获取该指示域信息后，不再监听PDCCH，UE3监听响应的时间小于时间窗长度。而现有技术中，当基站未检测到P3时，UE3会在整个响应时间窗内监听PDCCH，因此本申请相较现有技术而言，可以减少无效监听，节省功耗，同时，可以及早触发Preamble的重传，降低随机接入的接入时延。
情况1.2、第一信息为免授权传输数据，指示信息域通过比特位的不同取值指示是否发送第二响应消息
在情况1.2中，相对一情况1.1中，步骤一中基站下发的配置信息不同，终端设备可根据配置信息确定可用的PUSCH资源和DMRS资源。步骤二：终端在步骤一中所确定的PUSCH资源和DMRS资源中选择一个PUSCH资源和一个DMRS，向基站发送PUSCH，并确定RNTI。终端可以根据所选择的PUSCH的时频资源确定RNTI，也可以在基站下发的配置信息中获取RNTI，本申请在此不作具体限定。上述步骤二中，终端根据PUSCH时频资源确定RNTI的一种实现方式可以是类似TS 38.321 5.1.3节或5.1.3a的规定确定RA-RNTI或MsgB-RNTI。步骤三：终端发送PUSCH后，启动时间窗，并在时间窗内使用步骤二所确定的RNTI监听PDCCH，并接收PDCCH所调度的PDSCH(PDSCH中携带响应消息)。步骤四和步骤五与上述情况1.1的步骤相同可参照理解，在此不赘述。
图7以免授权传输为例，来说明情况1.2。假设三个终端(UE1、UE2、UE3)一个PUSCH时频资源上分别发送了三个不同的DMRS(D1、D2、D3)，基站仅检测出D1和D2，未检测出D3。假设基站先下发针对D1的响应消息，响应消息中携带1比特指示域信息，且指示域信息为1，表示基站还会下发响应消息，则UE2和UE3获取该指示域信息后，还会继续监听PDCCH。基站继续下发针对D2的响应消息，响应消息中携带1比特指示信息，并置为0，表示基站停止下发响应消息，则UE3获取该指示域信息后，停止时间窗，不再监听PDCCH，UE3监听响应的时间小于时间窗长度。而现有技术中，当基站未检测到D3时，UE3会在整个响应时间窗内监听PDCCH，因此本申请相较现有技术而言，可以减少无效监听，节省功耗，同时，可以及早触发DMRS的重传，降低随机接入的接入时延。
情况2.1、第一信息为随机接入信息，指示信息域通过比特位的不同取值指示是否检测到第一消息
情况2.1与情况1.1类似，所涉及的执行流程均一致，仅仅指示信息域的指示信息不同，在情况2.1中，指示信息域可指示基站检测到，和/或，未检测到的Preamble的信息，例如RAP ID。对应的终端行为不同，即使终端发现RAP ID或CR ID不同于所发送的Preamble的ID或CR ID时，如果该指示信息指示基站未检测到终端发送的Preamble，终端会停止监听PDCCH。
图8以2-step RACH为例，来说明情况2.1。假设三个终端(UE1、UE2、UE3)在同一个PRACH时频资源上分别发送了三个不同的Preamble(P1、P2、P3)，基站仅检测出P1和P2，未检测出P3。假设基站先下发针对P1或UE1的响应消息，响应消息中携带指示信息，指示基站检测到了P1、P2，但未检测到P3，则UE2和UE3获取该指示信息后， UE2会继续监听PDCCH，而UE3则不再监听PDCCH，UE3监听响应的时间小于时间窗长度。UE2在监听到针对自身的响应消息后则停止监听。而现有技术中，当基站未检测到P3时，UE3会在整个响应时间窗内监听PDCCH，因此本申请相比现有技术可以减少无效监听，节省功耗，同时，可以及早触发Preamble的重传，降低随机接入的接入时延。
情况2.2、第一信息为免授权传输数据，指示信息域通过比特位的不同取值指示是否检测到第一消息
情况2.2与情况1.2类似，所涉及的执行流程均一致，仅仅指示信息域的指示信息不同，在情况2.2中，指示信息域可指示基站检测到，和/或，未检测到的DMRS的信息，例如DMRS ID。对应的终端行为不同，如果该指示信息指示基站未检测到终端发送的DMRS，终端会停止监听PDCCH。
图9以免授权传输为例，来说明情况2.2。假设三个终端(UE1、UE2、UE3)在同一个PUSCH时频资源上分别发送了三个不同的DMRS(D1、D2、D3)，基站仅检测出D1和D3，未检测出D2。假设基站先下发针对D1或UE1的响应消息，响应消息中携带指示信息，指示基站检测到了D1、D3，但未检测到D2，则UE3和UE2获取该指示信息后，UE3会继续监听PDCCH直到收到针对UE3的响应为止，而UE2则不再监听PDCCH，UE2监听响应的时间小于时间窗长度。而现有技术中，当基站未检测到D2时，UE2会在整个响应时间窗内监听PDCCH，因此本申请相比现有技术可以减少无效监听，节省功耗，同时，可以及早触发DMRS的重传，降低随机接入的接入时延。
图10示出了本申请实施例提供的一种通信装置，该通信装置包括输入输出单元1001和处理单元1002，在实际应用时，输入输出单元1001可通过同一数据处理芯片来实现，也可通过不同的数据处理芯片来实现，本申请在此不作具体限定。该通信装置可以为上述的第一通信装置和第二通信装置，本申请在此不具体限定。
在为第一通信装置时，也即终端设备等时，可通过输入输出单元1001，采用第一资源发送第一信息；以及接收第一响应消息；第一响应消息对应第一资源，第一响应消息包括指示信息域，指示信息域用于指示是否还存在第二响应消息，第二响应消息对应第一资源；处理单元1002，若确定第一响应消息未对应第一通信装置且指示信息域指示存在第二响应消息，继续监听第二响应消息。
在为第二通信装置时，也即网络设备等时，可通过输入输出单元1001，在第一资源接收第一信息；以及发送第一响应消息；第一响应消息对应第一资源，第一响应消息包括指示信息域，指示信息域用于指示是否还存在第二响应消息，第二响应消息对应第一资源；处理单元1002，若指示信息域中存在第二响应消息，则发送第二响应消息。
需要说明的是，第一资源可以理解为时频资源，不同的第一通信装置均可在该时域资源传输消息，如：UE1、UE2以及UE3均在第一资源发送第一信息。第一资源可以是一个时频资源，也可以是包含多个时域相同但频域不同、或频域相同但时域不同、或时域和频域都不相同的资源的集合，这种情况下，UE可以选择其中之一发送第一信息。上述的第一信息可以为第一通信装置向第二通信装置传输的数据或者为第一通信装置与第二通信装置创建通信连接(如RRC连接)的接入信息，本申请在此不作具体限定。这里的时域相同是指时域资源完全重叠，频域相同是指频域资源完全重叠，时域不同是指时域资源部分重叠或完全不重叠，频域不同是指频域资源部分重叠或完全不重叠。
还要说明的是，在实际应用时，可能存在多个第一通信装置向第二通信装置传输数据，或与第二通信装置建立通信连接，那么第二通信装置可能会接收到多个第一消息。之后第二通信装置发送针对多个第一消息的第一响应消息，各第一通信装置根据第一响应消息中指示信息域的指示信息确定是否继续监听。例如，UE1监听来自gNB的第一响应消息，发现第一响应消息并非针对UE1，但是第一响应消息中指示存在第二响应消息，那么UE1则继续监听。UE2监听来自gNB的第一响应消息，若第一响应消息是针对UE2，那么UE2则停止监听。
本申请相对于在整个监听周期内持续监听响应消息而言，第一响应消息中携带指示信息域指示是否存在第二响应消息，第一通信装置可以根据第二响应消息的存在情况确定是否继续监听。当第一通信装置确定不存在第二响应消息时，即确定第二通信装置不会再发送第二响应消息时，停止监听，可以节约功耗，还可以重新发送数据或者与第二通信装置建立连接，提高数据处理效率和接入效率。
在一种可选的方式中，若第一响应消息对应于第一通信装置，或者，若第一响应消息未对应第一通信装置且指示信息域指示不存在第二响应消息，停止监听。
例如，UE1监听来自gNB的第一响应消息，发现第一响应消息是针对UE1，UE1则停止监听，或者UE1确定第二响应消息不存在，也停止监听。通过该方式可以节约第一通信装置的功耗。
在一种可选的方式中，指示信息域包括一个比特。该比特可以指示第二通信装置是否会下发第二响应消息。如指示信息域通过1指示第二通信装置会下发第二响应消息，通过0指示第二通信装置不会下发第二响应消息，也可通过其他方式指示，本申请在此不作具体限定。那么第一通信装置在接收到第一响应消息后可根据指示信息域比特位的取值确定是否继续监听，例如，UE1接收到第一响应消息，且该第一响应消息不是针对UE1的，那么UE1则确定指示信息域比特位的取值，若为1，则继续监听，若为0，则停止监听，通过该方式可节约第一通信装置的功耗。
在一种可选的方式中，指示信息域包括X个比特，X个比特指示多个Preamble或多个参考信号信息，X>＝2，X个比特对应的取值中包括一个指示不存在第二响应消息的取值。这里的参考信号可以是解调参考信号(demodulation reference signal，DMRS)或探测参考信号(sounding reference signal，SRS)等。
需要说明的是，在实际应用时，可将Preamble或参考信号进行分组，通过指示信息域中的一个或多个比特来指示针对某个Preamble组或参考信号组是否存在第二响应消息。例如，UE1～UE8选择了Preamble或参考信号组1中的Preamble或参考信号发送第一信息，UE9～UE16选择了Preamble或参考信号组2中的Preamble或参考信号发送第一信息，UE17～UE24选择了Preamble或参考信号组3中的Preamble或参考信号发送第一信息，指示信息通过3个比特来指示是否存在针对这些Preamble或参考信号组的第二响应消息，例如，000指示还会存在针对Preamble或参考信号组1和Preamble或参考信号组2的第二响应消息，而不存在针对Preamble或参考信号组3的第二响应消息，那么UE1～UE8可以选择继续监听，UE9～UE16也可以选择继续监听，UE17～UE24则停止监听；001指示还会存在针对Preamble或参考信号组1的第二响应消息，而不存在针和Preamble或参考信号组2和Preamble或参考信号组3的第二响应消息，UE1～UE8可以选择继续监听，UE9～UE16和UE17～UE24则停止监听，111则表示这3个组的Preamble或参考信号都不存在， UE1～UE24都不需要继续监听。本申请在此仅作示例性描述，并不作具体限定。
在一种可选的方式中，X个比特中每个比特对应一个Preamble组或一个DMRS组。在此仅以每个比特对应一个Preamble组来说明，如，UE1～UE8选择了Preamble或参考信号组1，UE9～UE16选择了Preamble或参考信号组组2，UE17～UE24选择了Preamble或参考信号组组3，指示信息于通过3个比特来指示，其中，110指示还会存在针对Preamble或参考信号组1和Preamble或参考信号组2的第二响应消息，而不存在针对Preamble或参考信号组3的第二响应消息，那么UE1～UE8可以选择继续监听，UE9～UE16也可以选择继续监听，UE17～UE24则停止监听，000则表示这3个组的Preamble或参考信号都不存在，UE1～UE24都不需要继续监听。
在一种可选的方式中，第一响应消息未对应第一通信装置为第一响应消息未包括第一通信装置发送的Preamble的标识以及第一响应消息为包括用于标识第一通信装置的信息，如第一通信装置的ID等。本申请中第一通信装置可根据第一响应消息中是否存在其对应的Preamble标识来确定第一响应消息是否针对第一通信装置。
在一种可选的方式中，第一通信装置在预设的时间窗内监听第一响应消息，或，第二响应消息，第二通信装置在预设的时间窗内发送第一响应消息，或，第二响应消息。其中，第一通信装置的预设时间窗的长度可以与第二通信装置预设的时间窗的长度相同也可以不同，本申请在此不作具体限定。
在一种可选的方式中，第一信息为随机接入信息或免授权传输数据。由于不同的第一通信装置与第二通信装置可能已经创建通信连接，因此仅需向第二通信装置传输数据即可，第一通信装置发送的第一信息可以为免授权传输数据，但是第一通信装置与第二通信装置可能并未创建通信连接，因此需要发送随机接入信息，本申请在此并不具体限定，具体要结合实际应用场景进行确定。可以理解，随机接入信息和免授权传输数据之间的区别在于，随机接入信息中包含Preamble，免授权传输数据中不包含Preamble。
此外，如图11所示，为本申请还提供的一种通信装置1100。示例性地，通信装置1100可以是芯片或芯片系统。可选的，在本申请实施例中芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
通信装置1100可以包括至少一个处理器1110，通信装置1100还可以包括至少一个存储器1120，用于存储计算机程序、程序指令和/或数据。存储器1120和处理器1110耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器1110可能和存储器1120协同操作。处理器1110可能执行存储器1120中存储的计算机程序。可选的，所述至少一个存储器1120也可与处理器1110集成在一起。
可选的，在实际应用中，通信装置1100中可以包括收发器1130也可不包括收发器1130，图中以虚线框来示意，通信装置1100可以通过收发器1130和其它设备进行信息交互。收发器1130可以是电路、总线、收发器或者其它任意可以用于进行信息交互的装置。
在一种可能的实施方式中，该通信装置1100可以应用于前述的终端设备，也可以是前述的第一通信装置，还可以是前述的第二通信装置。存储器1120保存实施上述任一实施例中的中继设备的功能的必要计算机程序、程序指令和/或数据。所述处理器1110可执行所述存储器1120存储的计算机程序，完成上述任一实施例中的方法。
本申请实施例中不限定上述收发器1130、处理器1110以及存储器1120之间的具体连 接介质。本申请实施例在图11中以存储器1120、处理器1110以及收发器1130之间通过总线连接，总线在图11中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图11中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。在本申请实施例中，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实施或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
在本申请实施例中，存储器可以是非易失性存储器，比如硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)等，还可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)。存储器还可以是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。本申请实施例中的存储器还可以是电路或者其它任意能够实施存储功能的装置，用于存储计算机程序、程序指令和/或数据。
基于以上实施例，参见图12，本申请实施例还提供另一种通信装置1200，包括：接口电路1210和逻辑电路1220；接口电路1210，可以理解为输入输出接口，可用于执行与上述图10示意的输入输出单元或如图11示意的收发器同样的操作步骤，本申请在此不再赘述。逻辑电路1220可用于运行所述代码指令以执行上述任一实施例中的方法，可以理解成上述图10中的处理单元或图11中的处理器，可以实现处理单元或处理器同样的功能，本申请在此不再赘述。
基于以上实施例，本申请实施例还提供一种可读存储介质，该可读存储介质存储有指令，当所述指令被执行时，使上述任一实施例的方法执行的方法被实施。该可读存储介质可以包括：U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请的方法、装置(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理装置的处理器以产生一个机器，使得通过计算机或其他可编程数据处理装置的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理装置以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理装置上，使得在计算机或其他可编程装置上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程装置上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。

Claims (31)

  1. 一种数据传输方法，应用于第一通信装置，其特征在于，包括：
    在第一资源发送第一信息；
    接收第一响应消息；所述第一响应消息对应所述第一资源，所述第一响应消息包括指示信息域，所述指示信息域用于指示是否还存在第二响应消息，所述第二响应消息对应所述第一资源；
    若所述第一响应消息未对应所述第一通信装置且所述指示信息域指示存在所述第二响应消息，继续监听所述第二响应消息。
  2. 根据权利要求1所述的方法，其特征在于，若所述第一响应消息对应于所述第一通信装置，或者，若所述第一响应消息未对应所述第一通信装置且所述指示信息域指示不存在所述第二响应消息，停止监听。
  3. 根据权利要求1或2所述的方法，其特征在于，所述指示信息域包括一个比特。
  4. 根据权利要求1-3中任一所述的方法，其特征在于，所述指示信息域包括X个比特，所述X个比特指示多个前导码Preamble或者多个解调参考信号DMRS，所述X>＝2，所述X个比特对应的取值中包括一个指示不存在所述第二响应消息的取值。
  5. 根据权利要求4所述的方法，其特征在于，所述X个比特中每个比特对应一个Preamble组或者一个DMRS组。
  6. 根据权利要求4或5所述的方法，其特征在于，所述第一响应消息未对应所述第一通信装置为所述第一响应消息未包括所述第一通信装置发送的Preamble标识或所述第一通信设备的标识。
  7. 根据权利要求1-6中任一所述的方法，其特征在于，在预设的时间窗内监听所述第一响应消息，或，所述第二响应消息。
  8. 根据权利要求1-7中任一所述的方法，其特征在于，所述第一信息为随机接入信息或免授权传输数据。
  9. 一种数据传输方法，应用于第二通信装置，其特征在于，包括：
    在第一资源接收第一信息；
    发送第一响应消息；所述第一响应消息对应所述第一资源，所述第一响应消息包括指示信息域，所述指示信息域用于指示是否还存在第二响应消息，所述第二响应消息对应所述第一资源；
    若所述指示信息域中存在所述第二响应消息，则发送所述第二响应消息。
  10. 根据权利要求9所述的方法，其特征在于，所述指示信息域包括一个比特。
  11. 根据权利要求9或10所述的方法，其特征在于，所述指示信息域包括X个比特，所述X个比特指示多个前导码Preamble或者多个解调参考信号DMRS，所述X>＝2，所述X个比特对应的取值中包括一个指示不存在所述第二响应消息的取值。
  12. 根据权利要求11所述的方法，其特征在于，所述X个比特中每个比特对应一个Preamble组或者一个DMRS组。
  13. 根据权利要求9-12中任一所述的方法，其特征在于，在预设的时间窗内发送所述第一响应消息，或，所述第二响应消息。
  14. 根据权利要求9-13中任一所述的方法，其特征在于，所述第一信息为随机接入信 息或免授权传输数据。
  15. 一种第一通信装置，其特征在于，包括：
    输入输出单元，用于在第一资源发送第一信息；以及接收第一响应消息；所述第一响应消息对应所述第一资源，所述第一响应消息包括指示信息域，所述指示信息域用于指示是否还存在第二响应消息，所述第二响应消息对应所述第一资源；
    处理单元，用于若所述第一响应消息未对应所述第一通信装置且所述指示信息域指示存在所述第二响应消息，继续监听所述第二响应消息。
  16. 根据权利要求15所述的装置，其特征在于，所述处理单元还用于：若所述第一响应消息对应于所述第一通信装置，或者，若所述第一响应消息未对应所述第一通信装置且所述指示信息域指示不存在所述第二响应消息，停止监听。
  17. 根据权利要求15或16所述的装置，其特征在于，所述指示信息域包括一个比特。
  18. 根据权利要求15-17中任一所述的装置，其特征在于，所述指示信息域包括X个比特，所述X个比特指示多个前导码Preamble或者多个解调参考信号DMRS，所述X>＝2，所述X个比特对应的取值中包括一个指示不存在所述第二响应消息的取值。
  19. 根据权利要求18所述的装置，其特征在于，所述X个比特中每个比特对应一个Preamble组或者一个DMRS组。
  20. 根据权利要求18或19所述的装置，其特征在于，所述第一响应消息未对应所述第一通信装置为所述第一响应消息未包括所述第一通信装置发送的Preamble标识或所述第一通信设备的标识。
  21. 根据权利要求15-20中任一所述的装置，其特征在于，在预设的时间窗内监听所述第一响应消息，或，所述第二响应消息。
  22. 根据权利要求15-21中任一所述的装置，其特征在于，所述第一信息为随机接入信息或免授权传输数据。
  23. 一种第二通信装置，其特征在于，包括：
    输入输出单元，用于在第一资源接收第一信息；以及发送第一响应消息；所述第一响应消息对应所述第一资源，所述第一响应消息包括指示信息域，所述指示信息域用于指示是否还存在第二响应消息，所述第二响应消息对应所述第一资源；
    处理单元，用于若所述指示信息域中存在所述第二响应消息，则发送所述第二响应消息。
  24. 根据权利要求23所述的装置，其特征在于，所述指示信息域包括一个比特。
  25. 根据权利要求23或24所述的装置，其特征在于，所述指示信息域包括X个比特，所述X个比特指示多个前导码Preamble或者多个解调参考信号DMRS，所述X>＝2，所述X个比特对应的取值中包括一个指示不存在所述第二响应消息的取值。
  26. 根据权利要求23所述的装置，其特征在于，所述X个比特中每个比特对应一个Preamble组或者一个DMRS组。
  27. 根据权利要求23-26中任一所述的装置，其特征在于，在预设的时间窗内发送所述第一响应消息，或，所述第二响应消息。
  28. 根据权利要求23-27中任一所述的装置，其特征在于，所述第一信息为随机接入信息或免授权传输数据。
  29. 一种通信装置，其特征在于，包括：至少一个处理器和存储器；
    所述存储器，用于存储计算机程序或指令；
    所述至少一个处理器，用于执行所述计算机程序或指令，以使得如权利要求1-8中任一项或权利要求9-14中任一项所述的方法被执行。
  30. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有指令，当所述指令被计算机执行时，使得如权利要求1-8中任一项或权利要求9-14中任一项所述的方法被执行。
  31. 一种包含计算机程序或指令的计算机程序产品，其特征在于，当其在计算机上运行时，使得上述权利要求1-8中任一项或权利要求9-14中任一项所述的方法被执行。
PCT/CN2022/089920 2021-05-26 2022-04-28 一种数据传输方法及通信装置 Ceased WO2022247578A1 (zh)

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