WO2020199882A1 - 通信方法、装置及设备 - Google Patents

通信方法、装置及设备 Download PDF

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Publication number
WO2020199882A1
WO2020199882A1 PCT/CN2020/078878 CN2020078878W WO2020199882A1 WO 2020199882 A1 WO2020199882 A1 WO 2020199882A1 CN 2020078878 W CN2020078878 W CN 2020078878W WO 2020199882 A1 WO2020199882 A1 WO 2020199882A1
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Prior art keywords
random access
configuration
information
terminal device
network device
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PCT/CN2020/078878
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English (en)
French (fr)
Inventor
杨水根
韩锋
晋英豪
马川
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2021557702A priority Critical patent/JP2022527919A/ja
Priority to EP20784423.4A priority patent/EP3941148A4/en
Publication of WO2020199882A1 publication Critical patent/WO2020199882A1/zh
Priority to US17/489,319 priority patent/US20220022251A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • H04W74/0841—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment
    • H04W74/085—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0866—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a dedicated channel for access
    • 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 signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method, device and equipment.
  • the terminal device can access the network device through random access.
  • the network device can be a base station.
  • the network equipment configures the random access resources used by the terminal equipment to access the network equipment, and the terminal equipment initiates random access using the random access resources indicated by the random access configuration received from the network equipment.
  • the random access configuration of network equipment cannot be well adapted to the current network conditions in some cases, resulting in terminal The probability that the device randomly accesses the network device has a low probability.
  • This application provides a communication method, device and equipment, which improve the reliability of communication.
  • an embodiment of the present application provides a communication method.
  • a network device receives first information sent by a terminal device and updates a random access configuration according to the first information, where the first information is a two-step random access of the terminal device Process information.
  • the terminal device after the terminal device accesses the network device through 2-step RACH, the terminal device sends the terminal device's two-step random access process information to the network device, so that the network device can optimize the random access configuration according to the first information , Improve the probability of successful random access of the terminal equipment, thereby improving the communication efficiency.
  • the first information includes at least one of the following information: the number of random access preambles sent by the terminal device in the two-step random access process; Indication information indicating whether competition for at least one random access preamble is detected in the preamble; indication information for indicating whether competition for at least one time-frequency resource is detected in the time-frequency resources used by the transmitted payload.
  • the network device can determine the information of the two-step random access process of the terminal device according to the first information reported by the terminal device, and then can accurately optimize the random access configuration based on the first information, which improves The probability of successful random access of terminal equipment, thereby improving communication efficiency.
  • the random access configuration is the random access configuration corresponding to the cell where the terminal device is located, or the random access configuration is the synchronization signal and physical broadcast channel block used by the terminal device for random access Random access configuration corresponding to SSB.
  • the network device includes a centralized unit CU and a distributed unit DU, which are connected to the DU; accordingly, the network device receives the first information sent by the terminal device, including: the CU receives the first information sent by the terminal device One information.
  • the network device updating the random access configuration according to the first information includes: the CU updates the random access configuration according to the first information. After the CU updates the random access configuration according to the first information, the CU sends the updated random access configuration to the DU.
  • the CU when the network device adopts the CU-DU architecture, after the terminal device accesses the CU through 2-step RACH, the CU can obtain the information of the two-step random access process of the terminal device, and optimize the random access process according to the first information.
  • the access configuration improves the probability of successful random access of the terminal equipment, thereby improving communication efficiency.
  • the method further includes: the CU receives the random access configuration sent by the DU.
  • the network device includes a CU and a DU, and the CU includes a centralized unit control plane CU-CP and a centralized unit user plane CU-UP; correspondingly, the network device receives the first information sent by the terminal device, Including: the CU-CP receives the first information sent by the terminal device.
  • the network device updates the random access configuration according to the first information, including: the CU-CP updates the random access configuration according to the first information.
  • the CU-CP sends the updated random access configuration to the DU.
  • the CU-CP can obtain the information of the two-step random access process of the terminal device, and optimize the random access configuration according to the first information, which improves The probability of successful random access of terminal equipment, thereby improving communication efficiency.
  • the method further includes: the CU-CP receives the random access configuration sent by the DU.
  • the random access configuration includes at least one of the following information: the physical random access channel PRACH configuration of the random access preamble in the two-step random access, and the payload of the two-step random access.
  • Time-frequency resource configuration indication information used to indicate whether it is possible to fall back from two-step random access to four-step random access, PRACH configuration of the random access preamble in four-step random access, and random access in two-step random access
  • the probability of successful random access of the terminal device can be increased, thereby improving communication efficiency.
  • an embodiment of the present application provides a communication device, including a receiver, a processor, and a memory, the memory stores program instructions, and the processor executes the program instructions in the memory, where:
  • the receiver is configured to receive first information sent by a terminal device, where the first information is information of a two-step random access process of the terminal device;
  • the processor is configured to update a random access configuration according to the first information.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether contention for at least one random access preamble is detected in the sent random access preamble
  • Indication information used to indicate whether competition for at least one time-frequency resource is detected in the time-frequency resources used by the transmitted payload.
  • the random access configuration is a random access configuration corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a random access configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the network equipment includes a centralized unit CU and a distributed unit DU, and the CU is connected to the DU; the device further includes a transmitter, wherein:
  • the transmitter is configured to send the updated random access configuration to the DU.
  • the receiver is further configured to receive the random access configuration sent by the DU before the processor updates the random access configuration according to the first information.
  • the network device includes a CU and a DU, and the CU includes a centralized unit control plane CU-CP and a centralized unit user plane CU-UP;
  • the transmitter is further configured to send the updated random access configuration to the DU.
  • the receiver is further configured to receive the random access configuration sent by the DU before the processor updates the random access configuration according to the first information.
  • the random access configuration includes at least one of the following information: physical random access channel PRACH configuration of the random access preamble in two-step random access, and net The time-frequency resource configuration of the load, the indication information used to indicate whether it is possible to fall back from the two-step random access to the four-step random access, the PRACH configuration of the random access preamble in the four-step random access, the two-step random access Random access preamble grouping, random access preamble grouping in four-step random access, random access fallback parameters in two-step random access, random access fallback parameters in four-step random access, two-step random access Random access transmission power control parameters, random access transmission power control parameters in four-step random access.
  • an embodiment of the present application provides a communication device, including a receiving module and a processing module, where:
  • the receiving module is configured to receive first information sent by a terminal device, where the first information is information of a two-step random access process of the terminal device;
  • the processing module is configured to update the random access configuration according to the first information.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether contention for at least one random access preamble is detected in the sent random access preamble
  • Indication information used to indicate whether competition for at least one time-frequency resource is detected in the time-frequency resources used by the transmitted payload.
  • the random access configuration is a random access configuration corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a random access configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the network equipment includes a centralized unit CU and a distributed unit DU, and the CU is connected to the DU; the device further includes a sending module, wherein:
  • the sending module is configured to send the updated random access configuration to the DU.
  • the receiving module is further configured to receive the random access configuration sent by the DU before the processing module updates the random access configuration according to the first information.
  • the network device includes a CU and a DU, and the CU includes a centralized unit control plane CU-CP and a centralized unit user plane CU-UP;
  • the sending module is further configured to send the updated random access configuration to the DU.
  • the receiving module is further configured to receive the random access configuration sent by the DU before the processing module updates the random access configuration according to the first information.
  • the random access configuration includes at least one of the following information: physical random access channel PRACH configuration of the random access preamble in two-step random access, and net The time-frequency resource configuration of the load, the indication information used to indicate whether it is possible to fall back from the two-step random access to the four-step random access, the PRACH configuration of the random access preamble in the four-step random access, the two-step random access Random access preamble grouping, random access preamble grouping in four-step random access, random access fallback parameters in two-step random access, random access fallback parameters in four-step random access, two-step random access Random access transmission power control parameters, random access transmission power control parameters in four-step random access.
  • an embodiment of the present application provides a computer-readable storage medium, the storage medium is used to store a computer program, and when the computer program is executed by a computer or a processor, the Communication method.
  • an embodiment of the present application provides a communication method.
  • a terminal device obtains first information and sends the first information to a network device.
  • the first information is information about a two-step random access process of the terminal device, and the first The information is used to make the network device update the random access configuration.
  • the terminal device after the terminal device accesses the network device through 2-step RACH, the terminal device sends the terminal device's two-step random access process information to the network device, so that the network device can optimize the random access configuration according to the first information , Improve the probability of successful random access of the terminal equipment, thereby improving the communication efficiency.
  • the first information includes at least one of the following information: the number of random access preambles sent by the terminal device in the two-step random access process; Indication information indicating whether competition for at least one random access preamble is detected in the preamble; indication information for indicating whether competition for at least one time-frequency resource is detected in the time-frequency resources used by the transmitted payload.
  • the network device can determine the information of the two-step random access process of the terminal device based on the foregoing first information, and then can perform random access based on the foregoing first information. Accurate optimization of the configuration improves the probability of successful random access of the terminal device, thereby improving communication efficiency.
  • the random access configuration is the random access configuration corresponding to the cell where the terminal device is located, or the random access configuration is the synchronization signal and physical broadcast channel block used by the terminal device for random access Random access configuration corresponding to SSB.
  • the random access configuration includes at least one of the following information: the physical random access channel PRACH configuration of the random access preamble in the two-step random access, and the payload of the two-step random access.
  • Time-frequency resource configuration indication information used to indicate whether it is possible to fall back from two-step random access to four-step random access, PRACH configuration of the random access preamble in four-step random access, and random access in two-step random access
  • the probability of successful random access of the terminal device can be increased, thereby improving communication efficiency.
  • an embodiment of the present application provides a communication device, including a processor, a transmitter, and a memory.
  • the memory stores program instructions, and the processor executes the program instructions in the memory, where:
  • the processor is configured to obtain first information, where the first information is information of a two-step random access process of the terminal device;
  • the transmitter is configured to send the first information to a network device.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether contention for at least one random access preamble is detected in the sent random access preamble
  • Indication information used to indicate whether competition for at least one time-frequency resource is detected in the time-frequency resources used by the transmitted payload.
  • the random access configuration is a random access configuration corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a random access configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the random access configuration includes at least one of the following information: physical random access channel PRACH configuration of the random access preamble in two-step random access, and net The time-frequency resource configuration of the load, the indication information used to indicate whether it is possible to fall back from the two-step random access to the four-step random access, the PRACH configuration of the random access preamble in the four-step random access, the two-step random access Random access preamble grouping, random access preamble grouping in four-step random access, random access fallback parameters in two-step random access, random access fallback parameters in four-step random access, two-step random access Random access transmission power control parameters, random access transmission power control parameters in four-step random access.
  • an embodiment of the present application provides a communication device, including a processing module and a sending module, where:
  • the processing module is configured to obtain first information, where the first information is information of a two-step random access process of the terminal device;
  • the sending module is configured to send the first information to a network device.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether contention for at least one random access preamble is detected in the sent random access preamble
  • Indication information used to indicate whether competition for at least one time-frequency resource is detected in the time-frequency resources used by the transmitted payload.
  • the random access configuration is a random access configuration corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a random access configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the random access configuration includes at least one of the following information: physical random access channel PRACH configuration of the random access preamble in two-step random access, and net The time-frequency resource configuration of the load, the indication information used to indicate whether it is possible to fall back from the two-step random access to the four-step random access, the PRACH configuration of the random access preamble in the four-step random access, the two-step random access Random access preamble grouping, random access preamble grouping in four-step random access, random access fallback parameters in two-step random access, random access fallback parameters in four-step random access, two-step random access Random access transmission power control parameters, random access transmission power control parameters in four-step random access.
  • an embodiment of the present application provides a computer-readable storage medium, where the storage medium is used to store a computer program, and when the computer program is executed by a computer or a processor, it is used to implement any one of the fifth aspect Communication method.
  • an embodiment of the present application provides a communication method, which includes:
  • the centralized unit CU receives the first information sent by the terminal device, where the first information is the information of the four-step random access process of the terminal device;
  • the CU updates the random access configuration according to the first information
  • the CU sends the updated random access configuration to the distributed unit DU.
  • the terminal device after the terminal device accesses the DU through the 4-step RACH, the terminal device sends the first information to the CU.
  • the first information may be information about the four-step random access process of the terminal device, so that the CU can follow the first Information optimization RACH configuration improves the probability of successful random access of terminal equipment, thereby improving communication efficiency.
  • the method before the CU updates the random access configuration according to the first information, the method further includes:
  • the CU receives the random access configuration sent by the DU.
  • the CU includes a centralized unit control plane CU-CP and a centralized unit user plane CU-UP;
  • the CU receiving the first information sent by the terminal device includes:
  • the CU updating the random access configuration according to the first information includes:
  • the CU-CP updates the random access configuration according to the first information
  • the CU sending the updated random access configuration to the DU includes:
  • the receiving, by the CU, the random access configuration sent by the DU includes:
  • the CU-CP receives the random access configuration sent by the DU.
  • the CU-CP can receive the first information sent by the terminal device, update the random access configuration according to the first information, and send the updated random access configuration to the DU, which improves the probability of successful random access for the terminal device , Thereby improving communication efficiency.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether competition for at least one random access preamble is detected in the sent random access preamble.
  • the CU can determine the information of the four-step random access process of the terminal device according to the above first information reported by the terminal device, and then can accurately optimize the random access configuration based on the above first information, which improves the terminal The probability of successful random access of the device, thereby improving communication efficiency.
  • the random access configuration is configuration information corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the random access configuration includes at least one of the following information: PRACH configuration of the random access preamble in the four-step random access, random access preamble packet in the four-step random access, Random access fallback parameters in four-step random access, and random access transmission power control parameters in four-step random access.
  • the probability of successful random access of the terminal device can be increased, thereby improving communication efficiency.
  • an embodiment of the present application provides a communication device applied to a centralized unit CU.
  • the device includes a receiver, a processor, a transmitter, and a memory.
  • the memory stores program instructions, and the processor executes The program instructions in the memory, wherein,
  • the receiver is configured to receive first information sent by a terminal device, where the first information is information about a four-step random access process of the terminal device;
  • the processor is configured to update a random access configuration according to the first information
  • the transmitter is configured to send the updated random access configuration to the distributed unit DU.
  • the receiver is further configured to receive the random access configuration sent by the DU before the processor updates the random access configuration according to the first information.
  • the CU includes a centralized unit control plane CU-CP and a centralized unit user plane CU-UP, and the communication device is applied to the CU-CP.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether competition for at least one random access preamble is detected in the sent random access preamble.
  • the random access configuration is configuration information corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the random access configuration includes at least one of the following information: PRACH configuration of the random access preamble in the four-step random access, random access preamble packet in the four-step random access, Random access fallback parameters in four-step random access, and random access transmission power control parameters in four-step random access.
  • an embodiment of the present application provides a communication device applied to a centralized unit CU.
  • the device includes a receiving module, a processing module, and a sending module, where:
  • the receiving module is configured to receive first information sent by a terminal device, where the first information is information of a four-step random access process of the terminal device;
  • the processing module is configured to update a random access configuration according to the first information
  • the sending module is configured to send the updated random access configuration to the distributed unit DU.
  • the receiving module is further configured to receive the random access configuration sent by the DU before the processing module updates the random access configuration according to the first information.
  • the CU includes a centralized unit control plane CU-CP and a centralized unit user plane CU-UP, and the communication device is applied to the CU-CP.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether competition for at least one random access preamble is detected in the sent random access preamble.
  • the random access configuration is configuration information corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the random access configuration includes at least one of the following information: PRACH configuration of the random access preamble in the four-step random access, random access preamble packet in the four-step random access, Random access fallback parameters in four-step random access, and random access transmission power control parameters in four-step random access.
  • an embodiment of the present application provides a computer-readable storage medium, the storage medium is used to store a computer program, and when the computer program is executed by a computer or a processor, it is used to implement any one of the ninth aspects. Communication method.
  • an embodiment of the present application provides a communication method, including:
  • the terminal device acquires first information, where the first information is information of the four-step random access process of the terminal device;
  • the terminal device sends the first information to the centralized unit CU, where the first information is used to cause the CU to update the random access configuration.
  • the terminal device after the terminal device accesses the DU through the 4-step RACH, the terminal device sends the first information to the CU.
  • the first information may be information about the four-step random access process of the terminal device, so that the CU can follow the first Information optimization random access configuration improves the probability of successful random access of terminal equipment, thereby improving communication efficiency.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether competition for at least one random access preamble is detected in the sent random access preamble.
  • the CU can determine the information of the four-step random access process of the terminal device according to the first information reported by the terminal device, and then can determine the random access process information based on the first information. Accurate optimization of the access configuration improves the probability of successful random access of the terminal equipment, thereby improving communication efficiency.
  • the random access configuration is configuration information corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the random access configuration includes at least one of the following information: PRACH configuration of the random access preamble in the four-step random access, random access preamble packet in the four-step random access, Random access fallback parameters in four-step random access, and random access transmission power control parameters in four-step random access.
  • the probability of successful random access of the terminal device can be increased, thereby improving communication efficiency.
  • an embodiment of the present application provides a communication device, including a processor, a transmitter, and a memory.
  • the memory stores program instructions, and the processor executes the program instructions in the memory, where:
  • the processor is configured to obtain first information, where the first information is information of a four-step random access process of the terminal device;
  • the transmitter is configured to send the first information to a centralized unit CU, where the first information is used to cause the CU to update a random access configuration.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether competition for at least one random access preamble is detected in the sent random access preamble.
  • the random access configuration is configuration information corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the random access configuration includes at least one of the following information: PRACH configuration of the random access preamble in the four-step random access, random access preamble packet in the four-step random access, Random access fallback parameters in four-step random access, and random access transmission power control parameters in four-step random access.
  • an embodiment of the present application provides a communication device, including a processing module and a sending module, where:
  • the processing module is configured to obtain first information, where the first information is information of a four-step random access process of the terminal device;
  • the sending module is configured to send the first information to a centralized unit CU, where the first information is used to cause the CU to update a random access configuration.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether competition for at least one random access preamble is detected in the sent random access preamble.
  • the random access configuration is configuration information corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the random access configuration includes at least one of the following information: PRACH configuration of the random access preamble in the four-step random access, random access preamble packet in the four-step random access, Random access fallback parameters in four-step random access, and random access transmission power control parameters in four-step random access.
  • an embodiment of the present application provides a computer-readable storage medium, where the storage medium is used to store a computer program, and when the computer program is executed by a computer or a processor, it is used to implement any of the methods described in the thirteenth aspect.
  • an embodiment of the present application provides a communication method, including:
  • the first network device obtains a random access configuration, where the random access configuration includes at least one of the following: a random access configuration of two-step random access, a random access configuration corresponding to a synchronization signal of four-step random access and a physical broadcast channel block SSB Access configuration;
  • the first network device sends the random access configuration to the second network device.
  • the first network device can obtain the random access configuration of the first network device, and send the random access configuration to the second network device, so that the second network device can follow the random access configuration of the first network device To update the random access configuration of the second network device to reduce the possibility of conflicts when the terminal device performs random access according to the random access configuration, increase the probability of successful random access of the terminal device, and thereby improve communication efficiency.
  • the random access configuration of the two-step random access includes at least one of the following: physical random access channel PRACH configuration of the random access preamble in the two-step random access, and two-step random access Time-frequency resource configuration of incoming payload.
  • the PRACH configuration is a PRACH configuration corresponding to a cell or a PRACH configuration corresponding to an SSB.
  • the random access configuration corresponding to the SSB of the four-step random access includes: the PRACH configuration of the random access preamble corresponding to each SSB of the four-step random access.
  • the sending of the random access configuration by the first network device to the second network device includes:
  • the first network device sends a first message to the second network device, where the first message includes the random access configuration.
  • the first message is an Xn establishment request message or an X2 establishment request message or an F1 establishment request message; or,
  • the first message is an Xn establishment response message or an X2 establishment response message or an F1 establishment response message; or,
  • the first message is a next-generation radio access network node configuration update message or a centralized unit configuration update message; or,
  • the first message is a next-generation radio access network node configuration update confirmation message or a distributed unit configuration update confirmation message.
  • the first network device can send the random access configuration to the second network device through an existing message, so that the signaling overhead is small.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is a centralized unit control plane CU-CP in a third CU
  • the second network device is a CU-CP in a fourth CU.
  • the first network device is a fifth CU
  • the second network device is a DU to which the fifth CU is connected.
  • the first network device is a CU-CP in a sixth CU
  • the second network device is a DU to which the sixth CU is connected.
  • the random access configuration further includes a random access configuration corresponding to a four-step random access cell.
  • the random access configuration further includes a random access configuration corresponding to a cell for four-step random access.
  • an embodiment of the present application provides a communication device, including a processor, a transmitter, and a memory.
  • the memory stores program instructions, and the processor executes the program instructions in the memory, where:
  • the processor is configured to obtain a random access configuration, where the random access configuration includes at least one of the following: a two-step random access random access configuration, a four-step random access synchronization signal corresponding to a physical broadcast channel block SSB Random access configuration;
  • the transmitter is configured to send the random access configuration to a second network device.
  • the random access configuration of the two-step random access includes at least one of the following: physical random access channel PRACH configuration of the random access preamble in the two-step random access, and two-step random access Time-frequency resource configuration of incoming payload.
  • the PRACH configuration is a PRACH configuration corresponding to a cell or a PRACH configuration corresponding to an SSB.
  • the random access configuration corresponding to the SSB of the four-step random access includes: the PRACH configuration of the random access preamble corresponding to each SSB of the four-step random access.
  • the transmitter is specifically configured to:
  • the first message is an Xn interface establishment request message or an X2 interface establishment request message or an F1 establishment request message; or,
  • the first message is an Xn establishment response message or an X2 establishment response message or an F1 establishment response message; or,
  • the first message is a next-generation radio access network node configuration update message or a centralized unit configuration update message; or,
  • the first message is a next-generation radio access network node configuration update confirmation message or a distributed unit configuration update confirmation message.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is a centralized unit control plane CU-CP in a third CU
  • the second network device is a CU-CP in a fourth CU.
  • the first network device is a fifth CU
  • the second network device is a DU to which the fifth CU is connected.
  • the first network device is a CU-CP in a sixth CU
  • the second network device is a DU to which the sixth CU is connected.
  • the random access configuration further includes a random access configuration corresponding to a four-step random access cell.
  • an embodiment of the present application provides a communication device, including a processing module and a sending module, where:
  • the processing module is configured to obtain a random access configuration, and the random access configuration includes at least one of the following: a two-step random access random access configuration, a four-step random access synchronization signal and a physical broadcast channel block SSB Corresponding random access configuration;
  • the sending module is configured to send the random access configuration to a second network device.
  • the random access configuration of the two-step random access includes at least one of the following: physical random access channel PRACH configuration of the random access preamble in the two-step random access, and two-step random access Time-frequency resource configuration of incoming payload.
  • the PRACH configuration is a PRACH configuration corresponding to a cell or a PRACH configuration corresponding to an SSB.
  • the random access configuration corresponding to the SSB of the four-step random access includes: the PRACH configuration of the random access preamble corresponding to each SSB of the four-step random access.
  • the sending module is specifically configured to:
  • the first message is an Xn interface establishment request message or an X2 interface establishment request message or an F1 establishment request message; or,
  • the first message is an Xn establishment response message or an X2 establishment response message or an F1 establishment response message; or,
  • the first message is a next-generation radio access network node configuration update message or a centralized unit configuration update message; or,
  • the first message is a next-generation radio access network node configuration update confirmation message or a distributed unit configuration update confirmation message.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is a centralized unit control plane CU-CP in a third CU
  • the second network device is a CU-CP in a fourth CU.
  • the first network device is a fifth CU
  • the second network device is a DU to which the fifth CU is connected.
  • the first network device is a CU-CP in a sixth CU
  • the second network device is a DU to which the sixth CU is connected.
  • the random access configuration further includes a random access configuration corresponding to a four-step random access cell.
  • an embodiment of the present application provides a computer-readable storage medium, where the storage medium is used to store a computer program, and when the computer program is executed by a computer or a processor, it is used to implement any of the aspects described in the seventeenth aspect.
  • an embodiment of the present application provides a communication method, including:
  • the first network device obtains a random access configuration corresponding to the terminal device, where the random access configuration is determined by the second network device for the terminal device, and the random access configuration includes at least one of the following: two-step random access The random access preamble index value and the physical random access channel PRACH mask index value in, the random access preamble index value and the physical random access channel PRACH mask index value in the four-step random access;
  • the first network device sends the random access configuration to a terminal device, where the random access configuration is used to enable the terminal device to access the second network device according to the random access configuration.
  • the second network device determines a dedicated PRACH configuration for the terminal device, so that the terminal device can access the second network device according to the dedicated PRACH configuration.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is a centralized unit control plane CU-CP in a third CU
  • the second network device is a CU-CP in a fourth CU.
  • the acquiring, by the first network device, the random access configuration corresponding to the terminal device includes:
  • the first network device receives a handover request confirmation message sent by the second network device, where the handover request confirmation message includes the random access configuration.
  • the second network device can send the random access configuration to the first network device through an existing message, so that the signaling overhead is small.
  • the method before the first network device receives the handover request confirmation message sent by the second network device, the method further includes:
  • the first network device sends a handover request message to the second network device, where the handover request message includes the identifier of the terminal device.
  • the first network device is a fifth CU
  • the second network device is a first DU to which the fifth CU is connected.
  • the first network device is the CU-CP in the sixth CU
  • the second network device is the second DU connected to the CU-CP in the sixth CU.
  • the acquiring, by the first network device, the random access configuration corresponding to the terminal device includes:
  • the first network device receives a terminal device context establishment response message sent by the second network device, where the terminal device context establishment response message includes the random access configuration.
  • the second network device can send the random access configuration to the first network device through an existing message, so that the signaling overhead is small.
  • the method before the first network device receives the terminal device context establishment response message sent by the second network device, the method further includes:
  • the first network device sends a terminal device context establishment request message to the second network device, where the terminal device context establishment request message includes the identifier of the terminal device.
  • the sending of the random access configuration by the first network device to the terminal device includes:
  • the first network device sends an RRC reconfiguration message to the terminal device, where the RRC reconfiguration message includes the random access configuration.
  • the first network device can send the random access configuration to the second network device through an existing message, so that the signaling overhead is small.
  • an embodiment of the present application provides a communication device, including a processor, a transmitter, and a memory, the memory stores program instructions, and the processor executes the program instructions in the memory, wherein:
  • the processor is configured to obtain a random access configuration corresponding to a terminal device, where the random access configuration is determined by a second network device for the terminal device, and the random access configuration includes at least one of the following: two-step random Random access preamble index value and physical random access channel PRACH mask index value during access, random access preamble index value and physical random access channel PRACH mask index value in four-step random access;
  • the transmitter is configured to send the random access configuration to a terminal device, where the random access configuration is used to enable the terminal device to access the second network device according to the random access configuration.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is a centralized unit control plane CU-CP in a third CU
  • the second network device is a CU-CP in a fourth CU.
  • the device further includes a receiving module, wherein:
  • the receiving module is configured to receive a handover request confirmation message sent by the second network device, where the handover request confirmation message includes the random access configuration.
  • the sending module is further configured to send a handover request message to the second network device before the receiving module receives the handover request confirmation message sent by the second network device, and
  • the handover request message includes the identification of the terminal device.
  • the first network device is a fifth CU
  • the second network device is a first DU to which the fifth CU is connected.
  • the first network device is the CU-CP in the sixth CU
  • the second network device is the second DU connected to the CU-CP in the sixth CU.
  • the acquiring, by the first network device, the random access configuration corresponding to the terminal device includes:
  • the first network device receives a terminal device context establishment response message sent by the second network device, where the terminal device context establishment response message includes the random access configuration.
  • the second network device can send the random access configuration to the first network device through an existing message, so that the signaling overhead is small.
  • the method before the first network device receives the terminal device context establishment response message sent by the second network device, the method further includes:
  • the first network device sends a terminal device context establishment request message to the second network device, where the terminal device context establishment request message includes the identifier of the terminal device.
  • the sending module is specifically configured to send an RRC reconfiguration message to the terminal device, where the RRC reconfiguration message includes the random access configuration.
  • an embodiment of the present application provides a communication device, including a processing module and a sending module, where:
  • the processing module is configured to obtain a random access configuration corresponding to a terminal device, where the random access configuration is determined by a second network device for the terminal device, and the random access configuration includes at least one of the following: two steps Random access preamble index value and physical random access channel PRACH mask index value in random access, random access preamble index value and physical random access channel PRACH mask index value in four-step random access;
  • the sending module is configured to send the random access configuration to a terminal device, where the random access configuration is used to enable the terminal device to access the second network device according to the random access configuration.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is a centralized unit control plane CU-CP in a third CU
  • the second network device is a CU-CP in a fourth CU.
  • the device further includes a receiving module, wherein:
  • the receiving module is configured to receive a handover request confirmation message sent by the second network device, where the handover request confirmation message includes the random access configuration.
  • the sending module is further configured to send a handover request message to the second network device before the receiving module receives the handover request confirmation message sent by the second network device, and
  • the handover request message includes the identification of the terminal device.
  • the first network device is a fifth CU
  • the second network device is a first DU to which the fifth CU is connected.
  • the first network device is the CU-CP in the sixth CU
  • the second network device is the second DU connected to the CU-CP in the sixth CU.
  • the acquiring, by the first network device, the random access configuration corresponding to the terminal device includes:
  • the first network device receives a terminal device context establishment response message sent by the second network device, where the terminal device context establishment response message includes the random access configuration.
  • the second network device can send the random access configuration to the first network device through an existing message, so that the signaling overhead is small.
  • the method before the first network device receives the terminal device context establishment response message sent by the second network device, the method further includes:
  • the first network device sends a terminal device context establishment request message to the second network device, where the terminal device context establishment request message includes the identifier of the terminal device.
  • the sending module is specifically configured to send an RRC reconfiguration message to the terminal device, where the RRC reconfiguration message includes the random access configuration.
  • an embodiment of the present application provides a computer-readable storage medium, the storage medium is used to store a computer program, and the computer program is used to implement any one of the twenty-first aspects when the computer program is executed by a computer or a processor.
  • the communication method described in item is used to implement any one of the twenty-first aspects when the computer program is executed by a computer or a processor.
  • an embodiment of the present application provides a communication method, including:
  • the terminal device receives the random access configuration sent by the first network device, where the random access configuration is allocated by the second network device to the terminal device, and the random access configuration includes at least one of the following: two-step random access The random access preamble index value and the physical random access channel PRACH mask index value in, the random access preamble index value and the physical random access channel PRACH mask index value in the four-step random access;
  • the terminal device accesses the second network device according to the random access configuration.
  • the second network device determines a dedicated PRACH configuration for the terminal device, so that the terminal device can access the second network device according to the dedicated PRACH configuration.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is the control plane CU-CP in the third CU
  • the second network device is the CU-CP in the fourth CU.
  • the first network device is a fifth CU
  • the second network device is a first DU to which the fifth CU is connected.
  • the first network device is the CU-CP in the sixth CU
  • the second network device is the second DU connected to the CU-CP in the sixth CU.
  • the terminal device receiving the random access configuration sent by the first network device includes:
  • the terminal device receives an RRC reconfiguration message, where the RRC reconfiguration message includes the random access configuration.
  • the first network device can send the random access configuration to the terminal device through an existing message, so that the signaling overhead is small.
  • an embodiment of the present application provides a communication device, which is applied to a terminal device.
  • the device includes a processor, a receiver, and a memory.
  • the memory stores program instructions, and the processor executes the memory.
  • Program instructions in, where,
  • the receiver is configured to receive a random access configuration sent by a first network device, where the random access configuration is allocated by a second network device to the terminal device, and the random access configuration includes at least one of the following: Random access preamble index value and physical random access channel PRACH mask index value in one-step random access, random access preamble index value and physical random access channel PRACH mask index value in four-step random access;
  • the processor is configured to access the second network device according to the random access configuration.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is the control plane CU-CP in the third CU
  • the second network device is the CU-CP in the fourth CU.
  • the first network device is a fifth CU
  • the second network device is a first DU to which the fifth CU is connected.
  • the first network device is the CU-CP in the sixth CU
  • the second network device is the second DU connected to the CU-CP in the sixth CU.
  • the receiver is specifically configured to: receive an RRC reconfiguration message, where the RRC reconfiguration message includes the random access configuration.
  • an embodiment of the present application provides a communication device, which is applied to a terminal device.
  • the device includes a processing module and a receiving module, where:
  • the receiving module is configured to receive a random access configuration sent by a first network device, where the random access configuration is allocated by a second network device to the terminal device, and the random access configuration includes at least one of the following: Random access preamble index value and physical random access channel PRACH mask index value in two-step random access, random access preamble index value and physical random access channel PRACH mask index value in four-step random access;
  • the processing module is configured to access the second network device according to the random access configuration.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is the control plane CU-CP in the third CU
  • the second network device is the CU-CP in the fourth CU.
  • the first network device is a fifth CU
  • the second network device is a first DU to which the fifth CU is connected.
  • the first network device is the CU-CP in the sixth CU
  • the second network device is the second DU connected to the CU-CP in the sixth CU.
  • the receiving module is specifically configured to: receive an RRC reconfiguration message, where the RRC reconfiguration message includes the random access configuration.
  • an embodiment of the present application provides a computer-readable storage medium, the storage medium is used to store a computer program, and the computer program is used to implement any one of the twenty-fifth aspect when the computer program is executed by a computer or a processor.
  • the communication method described in item is used to implement any one of the twenty-fifth aspect when the computer program is executed by a computer or a processor.
  • the terminal device after the terminal device accesses the network device through 2-step RACH, the terminal device sends the first information to the network device.
  • the first information may be two-step random access of the terminal device.
  • the process information allows the network device to optimize the RACH configuration according to the first information, which improves the probability of successful random access of the terminal device, thereby improving communication efficiency.
  • FIG. 1 is a schematic diagram of the architecture of a base station with CU-DU separation in a 5G communication system
  • Figure 2 is a system architecture diagram provided by an embodiment of the application.
  • Fig. 3 is a schematic diagram of the 4-step RACH process provided by an embodiment of the application.
  • Fig. 4 is a schematic diagram of a 2-step RACH process provided by an embodiment of the application.
  • FIG. 5 is a schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 7 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 8 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 9 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 11 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 12 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 13 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 14 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • 15 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 16 is a schematic structural diagram of still another communication device provided by an embodiment of this application.
  • FIG. 17 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 18 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 19 is a schematic structural diagram of still another communication device provided by an embodiment of this application.
  • 20 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 21 is a schematic structural diagram of still another communication device provided by an embodiment of this application.
  • FIG. 22 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 23 is a schematic structural diagram of still another communication device provided by an embodiment of this application.
  • FIG. 24 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 25 is a schematic structural diagram of still another communication device provided by an embodiment of this application.
  • FIG. 26 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 27 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the technical solution shown in this application can be applied to the 5th generation mobile communication technology (5G) system, and the 5G system can also be referred to as the new radio (NR) system of the fifth generation mobile communication technology. It can also be applied to long-term evolution (LTE) systems, universal mobile telecommunications system (UMTS) terrestrial radio access network (UMTS) terrestrial radio access network (UTRAN) systems, or global mobile Communication system (global system for mobile communication, GSM)/enhanced data rate for GSM Evolution (enhanced data rate for GSM Evolution, EDGE) system radio access network (GSM EDGE radio access network, GERAN) architecture.
  • LTE long-term evolution
  • UMTS universal mobile telecommunications system
  • UMTS universal mobile telecommunications system
  • UMTS Universal mobile telecommunications system
  • UTRAN terrestrial radio access network
  • GSM global mobile Communication system
  • GSM global system for mobile communication
  • GSM global system for mobile communication
  • GSM global system for mobile communication
  • EDGE enhanced data rate
  • the terminal equipment may be a device that includes wireless transceiver functions and can cooperate with network equipment to provide users with communication services.
  • Terminal equipment can refer to industrial robots, industrial automation equipment, terminal equipment, user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal , Terminal, wireless terminal equipment, user agent or user device.
  • UE user equipment
  • the terminal device may be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless Communication function handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or networks after 5G, for example, V2X terminal devices in LTE networks, and in 5G networks V2X terminal equipment, etc., this application does not limit this.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the network equipment may be a device used to communicate with terminal equipment.
  • the network equipment may be a next generation NodeB (gNB) or a next generation-evolved NodeB (ng-eNB).
  • gNB provides UE with new radio (NR) user plane functions and control plane functions
  • ng-eNB provides UE with evolved universal terrestrial radio access (E-UTRA) user plane Functions and control plane functions.
  • E-UTRA evolved universal terrestrial radio access
  • gNB and ng-eNB are only a name used to indicate a base station supporting a 5G network system, and do not have a restrictive meaning.
  • the network equipment can also be a base transceiver station (BTS) in a GSM system or a CDMA system, a base station (nodeB, NB) in a WCDMA system, or an evolutional node B (evolutional node B) in an LTE system. eNB or eNodeB).
  • BTS base transceiver station
  • NB base station
  • evolutional node B evolutional node B
  • LTE Long Term Evolutional node B
  • eNB or eNodeB evolutional node B
  • the network equipment may also be relay stations, access points, in-vehicle equipment, wearable equipment, and network side equipment in the network after 5G or network equipment in the future evolved PLMN network, road site unit (RSU) )Wait.
  • RSU road site unit
  • Fig. 1 is a schematic diagram of the architecture of a base station separated from CU-DU in a 5G communication system.
  • a 5G communication system includes a next generation core (5GC) and a radio access network (RAN) node connected to the 5GC.
  • the RAN node can be a gNB or an ng-eNB.
  • the RAN node can be connected to the 5GC through the NG-C (next generation control) interface and the NG-U (next generation user) interface.
  • NG-C next generation control
  • NG-U next generation user interface
  • a gNB or ng-eNB may include a centralized unit (central unit, CU) and one or more distributed units (DU).
  • a gNB or ng-eNB as shown in Fig. 1 includes one CU and two DUs.
  • a CU may include a centralized unit control plane (CU-control plane function, CU-CP) and one or more centralized unit user planes (CU-user plane function, CU-UP).
  • the CU and DU can be connected through the F1 interface
  • the CU-CP and CU-UP can be connected through the E1 interface
  • the CU-CP and DU can be connected through the F1 control plane interface (F1-C) Connection
  • CU-UP and DU can be connected through the F1 user interface (F1-U).
  • the solid line represents control plane transmission
  • the dashed line represents user plane transmission.
  • the function division of CU and DU can be divided according to the protocol stack. Among them, one possible way is to deploy a radio resource control (Radio Resource Control, RRC), a Packet Data Convergence Protocol (PDCP) layer and a Service Data Adaptation Protocol (SDAP) layer in the CU.
  • the radio link layer control protocol (radioLink control, RLC), media access control (media access control, MAC), and physical layer (physical layer, PHY) are deployed in the DU.
  • the CU has the processing capabilities of RRC, PDCP and SDAP.
  • DU has the processing capabilities of RLC, MAC, and PHY.
  • the CU includes processing capabilities of RRC, PDCP, RLC, and SDAP
  • the DU has processing capabilities of MAC and PHY.
  • the CU includes the processing capabilities of RRC, PDCP, RLC, SDAP and part of the MAC (for example, adding a MAC header), and the DU has the processing capability of PHY and part of the MAC (for example, scheduling).
  • the names of CU and DU may change, as long as the access network node that can realize the above-mentioned functions can be regarded as CU and DU in this application.
  • the CU-CP has the control plane functions of the CU, for example, the processing capabilities of RRC and the control plane processing capabilities in PDCP.
  • CU-UP has the user plane functions of CU, for example, the processing capabilities of SDAP and the user plane processing capabilities in PDCP.
  • the network device may be CU, CU-CP, CU-UP or DU.
  • the terminal device is connected to the CU through the DU and connected to the 5GC through the CU.
  • terminal equipment can also be connected to CU-CP through DU and connected to the control plane of 5GC through CU-CP; terminal equipment is connected to CU-UP through DU, and to the user plane of 5GC through CU-UP.
  • FIG. 2 is a system architecture diagram provided by an embodiment of the application.
  • the network device 201 can generate a random access channel (RACH) configuration (also called a random access configuration), and the terminal device 202 can access the network device through a random access process according to the RACH configuration generated by the network device 201 201.
  • RACH random access channel
  • the terminal device 202 can generate information about the random access process, and send the information about the random access process to the network device 201, so that the network device 201 can optimize the RACH configuration according to the information about the random access process, thereby improving the random access of the terminal device.
  • the probability of successful access improves communication efficiency.
  • the terminal device can initiate random access in a variety of possible scenarios.
  • the multiple possible scenarios can include at least one of the following scenarios: (1) The state of the terminal device is controlled from the radio resource ( Radio resource control, RRC) After the idle state is switched to the RRC connected state, the terminal device initiates random access during the process of establishing a wireless link with the network device. (2) After the wireless link between the terminal device and the network device fails, the terminal device and the network device initiate random access when the RRC connection is re-established. (3) When a terminal device needs to establish uplink synchronization with a new cell, it initiates random access.
  • RRC Radio resource control
  • Random access is initiated when the terminal device is in the RRC connected state, but has not yet been configured with dedicated resources for sending scheduling requests on the physical uplink control channel (PUCCH).
  • PUCCH physical uplink control channel
  • Random access is initiated when the scheduling request fails.
  • Random access is initiated when RRC requests during synchronous reconfiguration.
  • Random access is initiated when the state of the terminal device switches from the RRC inactive state to the RRC connected state.
  • MIB master information block
  • SIB system information block
  • the random access involved in this application may include four-step random access (or four-step random access channel, hereinafter referred to as 4-step RACH) and two-step random access (or two-step random access channel) , Hereinafter referred to as 2-step RACH for short), in order to facilitate understanding, the following describes the 4-step RACH and 2-step RACH processes in detail.
  • 4-step RACH four-step random access channel
  • 2-step RACH two-step random access
  • Fig. 3 is a schematic flow chart of 4-step RACH provided by an embodiment of the application.
  • the 4-step RACH has been defined in detail in the existing protocol TS38.300, and this application only briefly describes it. See Figure 3.
  • the method can include:
  • the terminal device sends MSG1 (or called Msg1, or called msg1) to the network device for transmitting a random access preamble (or called a random access preamble, or called a random access preamble sequence, hereinafter referred to as a preamble) , Can also be called preamble sequence).
  • MSG1 or called Msg1, or called msg1
  • the preamble and the time-frequency resources occupied by the preamble transmission are referred to as physical random access channel (PRACH) resources.
  • PRACH physical random access channel
  • the network device can broadcast the available PRACH resources, and the terminal device can select a preamble and send the preamble on the corresponding time-frequency resource.
  • a network device can broadcast available PRACH resources through system information.
  • the network device sends MSG2 (or called Msg2, or called msg2) to the terminal device.
  • MSG2 contains the time-frequency resource that the network device determines to the terminal device to send the payload (payload).
  • the terminal device sends MSG3 (or called Msg3, or called msg3) to the network device.
  • MSG3 or called Msg3, or called msg3
  • MSG3 is the first scheduled transmission in the random access process, sending a payload, such as an RRC connection request message, a tracking area update message, and so on.
  • the network device sends MSG4 (or called Msg4, or called msg4) to the terminal device to indicate whether the terminal device has successfully accessed the network device.
  • MSG4 or called Msg4, or called msg4
  • the terminal device and the network device need to perform signaling interactions four times, resulting in high signaling overhead and high communication delay.
  • Fig. 4 is a schematic diagram of a 2-step RACH process provided by an embodiment of the application. Referring to Figure 4, the method may include:
  • the terminal device sends msgA (or called MsgA, or called MSGA) to the network device.
  • msgA or called MsgA, or called MSGA
  • msgA includes preamble and payload (for example, RRC connection request message, tracking area update message, etc.).
  • the network device sends msgB (or called MsgB, or called MSGB) to the terminal device to indicate whether the terminal device has successfully accessed the network device.
  • msgB or called MsgB, or called MSGB
  • the terminal device and the network device need to perform two signaling interactions.
  • the signaling overhead is reduced and the communication delay is reduced.
  • FIG. 5 is a schematic flowchart of a communication method provided by an embodiment of this application. Referring to Figure 5, the method may include:
  • S501 The terminal device sends first information to the network device.
  • the first information may be the random access failure information that the terminal device reports to the network device when the terminal device performs random access.
  • the network device may be a base station.
  • the terminal device may send the first information to the network device after successfully accessing the network device through the 2-step RACH.
  • the terminal device accessing the network device through the 2-step RACH means that the terminal device accesses the network device through the method shown in the embodiment of FIG. 4.
  • the first information may be information of a two-step random access process of the terminal device.
  • the first information may be information about the failure of the terminal device to access the network device through the 2-step RACH.
  • the terminal device may fail to access the network device through the 2-step RACH.
  • the terminal device device makes multiple random access attempts before successfully accessing the network device.
  • the first information may include at least one of the following information: the number of preamble (or msgA) sent by the terminal device in the 2-step RACH; used to indicate whether at least one preamble is detected in the sent preamble Indication information of the occurrence of contention; indication information used to indicate whether competition for at least one time-frequency resource is detected in the time-frequency resources used by the transmitted payload.
  • the first information may also include other content, which is not specifically limited in the embodiment of the present application.
  • the first information can also be the four-step randomization of the terminal device Information about the access process.
  • the first information may also include the number of preambles sent by the terminal device in the 4-step RACH, and/or indication information used to indicate whether competition for at least one preamble is detected in the sent preamble.
  • the concept of SSB is introduced in the fifth-generation communication system.
  • the SSB includes a primary synchronization signal (primary synchronization signal, PSS), a secondary synchronization signal (secondary synchronization signal, SSS), and a physical broadcast channel (physical broadcast channel, PBCH), occupying 4 symbols in the time domain and in the frequency domain. Up to 240 sub-carriers are occupied. Within the frequency range of one carrier, multiple SSBs can be transmitted, and each SSB corresponds to a physical cell identifier (PCI), and the PCIs corresponding to these SSBs may be the same or different.
  • PCI physical cell identifier
  • the terminal can obtain PCI and uplink synchronization through the PSS, and the terminal can obtain the cyclic prefix (CP) length, physical cell group identifier (ID), and frame synchronization through the SSS.
  • the terminal can obtain the MIB by decoding the PBCH, and the MIB includes the public The number of antenna ports, system frame number (SFN), downlink system bandwidth, and physical hybrid automatic repeat request indicator channel (PHICH) configuration information.
  • SFN system frame number
  • PHICH physical hybrid automatic repeat request indicator channel
  • an SSB when an SSB is associated with remaining minimum system information (RMSI), the SSB corresponds to a single cell, and the cell has a unique NR cell global identifier (NCGI). At this time, this SSB is called a cell defining SSB (cell defining SSB, CD-SSB). Only CD-SSB can send MIB message and system information block 1 (system information block 1, SIB1) message, and the terminal only accesses based on the synchronization signal of CD-SSB when cell selection. Other SSBs can only send MIB messages, not SIB1 messages.
  • RMSI remaining minimum system information
  • SIB1 system information block 1
  • the network device updates the RACH configuration according to the first information.
  • the RACH configuration is the RACH configuration corresponding to the cell where the terminal device is located, or the RACH configuration is the corresponding RACH configuration of the SSB used by the terminal device for random access.
  • a network device may correspond to multiple cells, and each cell has its corresponding RACH configuration.
  • the network device determines the cell where the terminal device is located, and updates the RACH configuration corresponding to the cell where the terminal device is located.
  • a network device can correspond to multiple SSBs, and each SSB has its corresponding RACH configuration.
  • the network device can determine the SSB used by the terminal device for random access, and update the RACH configuration corresponding to the SSB.
  • the RACH configuration includes at least one of the following: the PRACH configuration of the preamble in the 2-step RACH (PRACH configuration), the time-frequency resource configuration of the payload in the 2-step RACH, and it is used to indicate whether the 2-step RACH response can be returned.
  • 4-step RACH instruction information 4-step RACH preamble PRACH configuration (PRACH configuration), 4-step RACH preamble packet (RACH preamble split), 2-step RACH preamble packet (RACH preamble split), 4-step RACH backoff parameter value (RACH backoff parameter value), 2-step RACH backoff parameter value (RACH backoff parameter value), 4-step RACH transmission power control parameters (RACH transmission power control parameters), 2-step RACH transmission Power control parameters (RACH transmission power control parameters).
  • PRACH configuration may include root sequence index, zero correlation area configuration, PRACH frequency offset, PRACH configuration index, etc.
  • the PRACH configuration of the preamble in the 2-step RACH can be used to adjust the preamble in the 2-step RACH and/or the time-frequency resources used for transmitting the preamble.
  • the PRACH configuration of the preamble in the 4-step RACH can be used to adjust the preamble in the 4-step RACH and/or the time-frequency resources used for transmitting the preamble.
  • the time-frequency resource configuration of the payload in the 2-step RACH is used to adjust the time-frequency resources used by the payload in the 2-step RACH.
  • the time-frequency resource configuration of the payload can be determined by frequency offset (frequency offset) or configuration index (configuration index).
  • the frequency offset is used to indicate the index of the first resource block (resource block, RB) in which the terminal device sends the preamble.
  • the configuration index (PRACH-configuration index) is used to indicate the time-frequency resource and preamble format for the terminal device to send the preamble.
  • the preamble group (preamble group in 4-step RACH or preamble group in 2-step RACH) can be used to adjust the members of each preamble subset.
  • the network device may send the adjusted preamble set of each subset to the terminal device, for example, may send it to the terminal device through system information.
  • the preamble group in the 2-step RACH can be used to adjust the members of each preamble subset in the 2-step RACH.
  • the preamble group in the 4-step RACH can be used to adjust the members of each preamble subset in the 4-step RACH.
  • the RACH fallback parameter value (4-step RACH fallback parameter value or 2-step RACH fallback parameter value) may include a time window.
  • the time window is used to indicate the time period during which the terminal device expects to receive a random access response (including msgB in the 2-step RACH and MSG2 in the 4-step RACH).
  • the start and end of the time window are set by the network equipment and broadcast as part of the system information. For example, if the terminal device does not receive a random access response within the set time window, the terminal device will retransmit msgA or MSG1.
  • the length of the time window can be adjusted according to the first information, for example, the length of the time window can be adjusted longer.
  • the RACH transmission power control parameter (4-step RACH transmission power control parameter or 2-step RACH transmission power control parameter) is used to instruct the terminal device to retransmit the 2-step RACH msgA or 4-step RACH MSG1 power climb step value.
  • the terminal device will increase the transmit power when sending msgA in 2-step RACH or MSG1 in 4-step RACH according to the power ramp step value.
  • the power ramp step value can be adjusted according to the first information, for example, the power ramp step value can be adjusted larger.
  • the PRACH configuration (PRACH configuration of the preamble in the 4-step RACH, or the PRACH configuration of the preamble in the 2-step RACH) shown in the embodiment of this application includes at least one of the following:
  • Root sequence index the available preamble set corresponding to the cell or SSB is generated by the cyclic shift of one or more root Zadoff-Chu sequences (ZC sequences), the start of the root sequence used by the cell or SSB
  • ZC sequences root Zadoff-Chu sequences
  • the logical sequence number of the root sequence is configured by the parameter root sequence index.
  • the ZC sequence used to generate the preamble in cell 1 is in the root sequence index comparison table
  • the root sequence index of the parameter is the ZC sequence corresponding to the root sequence index of 1
  • the ZC sequence used to generate the preamble in cell 2 is the root sequence index in the root sequence index comparison table.
  • Zero correlation zone configuration this parameter is used to indicate the index value of the cyclic shift configuration used when the PRACH preamble is generated.
  • the cyclic shift used when generating the preamble is determined, and the preamble available to the cell or SSB is determined.
  • two cells or SSBs use the same root sequence to generate preambles, if different zero correlation area configurations are used, the available preambles for the two cells or SSBs are different.
  • this parameter is used to indicate whether the cell is a high-speed cell, or whether the SSB is a high-speed SSB.
  • the high-speed cell or SSB and the non-high-speed cell or SSB use different root sequences when generating the preamble. For example, if cell 1 or SSB1 is a high-speed cell or a high-speed SSB, and cell 2 or SSB2 is a non-high-speed cell or a non-high-speed SSB, and the root sequences used to generate the preamble are different between these two cells or SSBs, these two cells or SSBs can The preamble is different.
  • Frequency offset (PRACH-frequency offset), this parameter is used to indicate the index of the first resource block (resource block, RB) where the terminal device sends the preamble. For example, if the frequency offset of cell 1 or SSB1 is 1, and the frequency offset of cell 2 or SSB2 is 2, then the starting RB used to transmit the preamble in cell 1 or SSB1 is RB No. 1, and cell 2 or SSB2 is used for The RB transmitting the preamble is No. 2 RB.
  • PRACH-configuration index This parameter indicates the time-frequency resource and preamble format for the terminal device to send the preamble. For example, if the configuration index of cell 1 or SSB1 is 1, and the configuration index of cell 2 or SSB2 is 2, then the time-frequency resource used to transmit the preamble in cell 1 or SSB1 is the value of the configuration index in the random access configuration index comparison table The time-frequency resource corresponding to the configuration index of 1, the time-frequency resource used to transmit the preamble in cell 2 or SSB2 is the time-frequency resource corresponding to the configuration index whose value is 2 in the random access configuration index comparison table . When two cells or SSBs use different configuration indexes, the two cells or SSBs use different time-frequency resources for transmitting the preamble.
  • the terminal device after the terminal device accesses the network device through 2-step RACH, the terminal device sends first information to the network device.
  • the first information may be information about the two-step random access process of the terminal device. This allows the network device to optimize the RACH configuration according to the first information, which improves the probability of successful random access of the terminal device, thereby improving communication efficiency.
  • the network device includes a centralized unit CU and a distributed unit DU.
  • the communication method can be implemented through the embodiment shown in FIG. 6.
  • FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of this application. Referring to Figure 6, the method may include:
  • the terminal device sends first information to the CU.
  • the terminal device may send the first information to the CU after successfully accessing the DU through the 2-step RACH.
  • the terminal device accessing the DU through the 2-step RACH means that the terminal device accesses the DU through the method shown in the embodiment of FIG. 4.
  • the first information is information of the two-step random access process of the terminal device.
  • the first information may include at least one of the following information: the number of preambles sent by the terminal device in 2-step RACH; an indication used to indicate whether contention for at least one preamble is detected in the sent preambles Information; indication information used to indicate whether competition for at least one time-frequency resource is detected in the time-frequency resources used by the transmitted payload.
  • the first information may also include other content, which is not specifically limited in the embodiment of the present application.
  • the terminal device when the terminal device sends the first information to the CU, the first information may be forwarded by the DU.
  • the terminal device sends the first information to the DU, and the DU forwards the first information to the CU through the F1 interface.
  • the CU updates the RACH configuration according to the first information.
  • the RACH configuration updated by the CU is the RACH configuration currently used by the terminal device.
  • the RACH configuration of the cell or SSB supported by the DU is pre-stored in the DU.
  • a RACH configuration may be pre-stored in the CU, and the RACH configuration is the RACH configuration of the cell or SSB supported by one or more DUs connected to the CU.
  • the CU receives the RACH configuration sent by the DU, where the RACH configuration is the RACH configuration of the cell or SSB supported by the DU.
  • the RACH configuration is the RACH configuration corresponding to the cell where the terminal device is located, or the RACH configuration is the RACH configuration corresponding to the SSB used by the terminal device for random access.
  • the RACH configuration includes at least one of the following: the PRACH configuration of the preamble in the 2-step RACH, the time-frequency resource configuration of the payload in the 2-step RACH, and is used to indicate whether the 2-step RACH can be rolled back to 4- step RACH instruction information, 4-step RACH preamble PRACH configuration, 4-step RACH preamble packet, 2-step RACH preamble packet, 4-step RACH fallback parameter value, 2-step RACH fallback parameter value, 4 -step RACH transmission power control parameters, 2-step RACH transmission power control parameters. It should be noted that, for the description of the parameters included in the RACH configuration, refer to S502, which will not be repeated here.
  • the CU sends the updated RACH configuration to the DU.
  • the CU can send the updated RACH configuration to the DU through the F1 interface.
  • the DU updates the RACH configuration to the updated RACH configuration received from the CU.
  • the terminal device after the terminal device accesses the CU through the 2-step RACH, the terminal device sends first information to the CU.
  • the first information may be information about the two-step random access process of the terminal device, so that The CU can optimize the RACH configuration according to the first information, which improves the probability of successful random access of the terminal device, thereby improving communication efficiency.
  • CU-CP is used as a control plane network element to optimize the RACH configuration.
  • the communication method can be implemented through the embodiment shown in FIG. 6, where the CU is replaced with CU-CP.
  • FIG. 7 is a schematic flowchart of another communication method provided by an embodiment of this application. Referring to Figure 7, the method may include:
  • the terminal device sends first information to the CU.
  • the terminal device may send the first information to the CU after successfully accessing the DU through the 4-step RACH.
  • the terminal device accessing the DU through the 4-step RACH means that the terminal device accesses the DU through the method shown in the embodiment of FIG. 3.
  • the first information is the information of the four-step random access process of the terminal device.
  • the first information may include at least one of the following information: the number of preambles sent by the terminal device in the 4-step RACH; an indication used to indicate whether competition for at least one preamble is detected in the sent preambles information.
  • the first information may also include other content, which is not specifically limited in the embodiment of the present application.
  • the terminal device when the terminal device sends the first information to the CU, the first information may be forwarded by the DU.
  • the terminal device sends the first information to the DU, and the DU forwards the first information to the CU through the F1 interface.
  • the CU updates the RACH configuration according to the first information.
  • the RACH configuration updated by the CU may be the RACH configuration currently used by the terminal device.
  • the RACH configuration of the cell or SSB supported by the DU is pre-stored in the DU.
  • a RACH configuration may be pre-stored in the CU, and the RACH configuration is the RACH configuration of the cell or SSB supported by one or more DUs connected to the CU.
  • the CU receives the RACH configuration sent by the DU, where the RACH configuration is the RACH configuration of the cell or SSB supported by the DU.
  • the RACH configuration is the RACH configuration corresponding to the cell where the terminal device is located, or the RACH configuration is the RACH configuration corresponding to the SSB used by the terminal device for random access.
  • the RACH configuration includes at least one of the following: PRACH configuration of the preamble in the 4-step RACH, 4-step RACH preamble grouping, 4-step RACH fallback parameter value, and 4-step RACH transmission power control parameter.
  • the CU sends the updated RACH configuration to the DU.
  • the CU can send the updated RACH configuration to the DU through the F1 interface.
  • the DU updates the RACH configuration to the updated RACH configuration received from the CU.
  • the terminal device after the terminal device accesses the DU through the 4-step RACH, the terminal device sends first information to the CU.
  • the first information may be information about the four-step random access process of the terminal device, so that The CU can optimize the RACH configuration according to the first information, which improves the probability of successful random access of the terminal device, thereby improving communication efficiency.
  • the CU-CP serves as a control plane network element and is responsible for optimizing the RACH configuration.
  • the communication method can be implemented through the embodiment shown in FIG. 7, in which the CU is replaced with CU-CP.
  • FIG. 8 is a schematic flowchart of another communication method provided by an embodiment of this application. See Figure 8. The method may include:
  • the first network device obtains a random access configuration.
  • the random access configuration includes PRACH configuration and/or time-frequency resource configuration.
  • the random access configuration includes at least one of the following: a two-step random access random access configuration, a four-step random access synchronization signal and a physical broadcast channel block SSB The corresponding random access configuration.
  • the PRACH configuration and/or time-frequency resource configuration acquired by the first network device is used to indicate the configuration of the random access resource used by the terminal device to access the first network device in the random access process.
  • the PRACH configuration includes at least one of the following: the PRACH configuration of the preamble corresponding to the cell in the 2-step RACH, the PRACH configuration of the preamble corresponding to the SSB in the 2-step RACH, and the PRACH configuration of the preamble corresponding to the SSB in the 4-step RACH.
  • the time-frequency resource configuration includes at least one of the following: the time-frequency resource configuration of the payload corresponding to the cell in the 2-step RACH, and the time-frequency resource configuration of the payload corresponding to the SSB in the 2-step RACH.
  • the random access configuration includes at least one of the following: a two-step random access random access configuration, and a four-step random access random access configuration.
  • the PRACH configuration and/or time-frequency resource configuration obtained by the first network device is used to indicate the configuration of random access resources used by the terminal device to access the DU to which the CU is connected during the random access process.
  • the PRACH configuration includes at least one of the following: the PRACH configuration of the preamble corresponding to the cell in the 2-step RACH, the PRACH configuration of the preamble corresponding to the SSB in the 2-step RACH, the PRACH configuration of the preamble corresponding to the cell in the 4-step RACH, The PRACH configuration of the corresponding preamble in the 4-step RACH.
  • the time-frequency resource configuration includes at least one of the following: the time-frequency resource configuration of the payload corresponding to the cell in the 2-step RACH, and the time-frequency resource configuration of the payload corresponding to the SSB in the 2-step RACH.
  • the random access configuration includes at least one of the following: a two-step random access random access configuration, and a four-step random access random access configuration.
  • the PRACH configuration and/or time-frequency resource configuration acquired by the first network device is used to indicate the configuration of random access resources used by the terminal device to access the DU to which the CU-CP is connected during the random access process.
  • the PRACH configuration includes at least one of the following: the PRACH configuration of the preamble corresponding to the cell in the 2-step RACH, the PRACH configuration of the preamble corresponding to the SSB in the 2-step RACH, the PRACH configuration of the preamble corresponding to the cell in the 4-step RACH, The PRACH configuration of the preamble corresponding to the SSB in the 4-step RACH.
  • the time-frequency resource configuration includes at least one of the following: the time-frequency resource configuration of the payload corresponding to the cell in the 2-step RACH, and the time-frequency resource configuration of the payload corresponding to the SSB in the 2-step RACH.
  • the first network device sends a random access configuration to the second network device.
  • the first network device may send a first message to the second network device, where the first message includes PRACH configuration and/or time-frequency resource configuration.
  • the first message may be an interface establishment request message.
  • the interface setup request message may be an X2 setup request message (X2 setup request).
  • the interface setup request message may be an Xn setup request message (Xn setup request).
  • the interface setup request message can be an F1 setup request message (F1 setup request).
  • the first message can be an interface establishment response message.
  • the interface setup request message may be an X2 setup response message (X2 setup response).
  • the interface setup request message can be an Xn setup response message (Xn setup response).
  • the interface setup response message can be the F1 setup response message (F1 setup response).
  • the first message may be a node configuration update message.
  • the node configuration update message can be the next generation radio access network (NG-RAN) node configuration update message (NG-RAN node configuration update.
  • NG-RAN node configuration update In the CU-DU separated base station architecture Among them, the node configuration update message may be a centralized unit configuration update message (gNB-CU configuration update).
  • the first message may be a node configuration update confirmation message.
  • the node configuration update confirmation message may be a next-generation radio access network node configuration update confirmation message (NG-RAN node configuration update acknowledgement).
  • NG-RAN node configuration update acknowledgement next-generation radio access network node configuration update confirmation message
  • the node configuration update confirmation message may be a distributed unit configuration update confirmation message (gNB-DU configuration update acknowledge).
  • the first network device when the first message is a node configuration update message or a node configuration update confirmation message, only after the PRACH configuration and/or time-frequency resource configuration of the first network device is updated, the first network device sends the message to the second network.
  • the device sends a configuration update message or a node configuration update confirmation message, and the configuration update message or the node configuration update confirmation message carries the PRACH configuration and/or time-frequency resource configuration of the first network device.
  • the PRACH configuration and/or time-frequency resource configuration in the configuration update message or the node configuration update confirmation message may be the updated complete PRACH configuration and/or time-frequency resource configuration of the first network device, or the configuration update message or node
  • the PRACH configuration and/or time-frequency resource configuration in the configuration update confirmation message may be the updated PRACH configuration and/or time-frequency resource configuration of the first network device.
  • the second network device may update the PRACH configuration and/or time-frequency resource configuration of the second network device, or determine the first 2. PRACH configuration and/or time-frequency resource configuration of network equipment.
  • the PRACH configuration and/or time-frequency resource configuration of the second network device is used to indicate the random number used by the terminal device to access the second network device during the random access process.
  • the PRACH configuration includes at least one of the following: the PRACH configuration of the preamble corresponding to the cell in the 2-step RACH, the PRACH configuration of the preamble corresponding to the SSB in the 2-step RACH, and the PRACH configuration of the preamble corresponding to the SSB in the 4-step RACH.
  • the time-frequency resource configuration includes at least one of the following: the time-frequency resource configuration of the payload corresponding to the cell in the 2-step RACH, and the time-frequency resource configuration of the payload corresponding to the SSB in the 2-step RACH.
  • the PRACH configuration and/or time-frequency resource configuration of the second network device are used to indicate the random access used by the terminal device to access the DU to which the CU is connected during the random access process Resource allocation.
  • the PRACH configuration includes at least one of the following: the PRACH configuration of the preamble corresponding to the cell in the 2-step RACH, the PRACH configuration of the preamble corresponding to the SSB in the 2-step RACH, the PRACH configuration of the preamble corresponding to the cell in the 4-step RACH, The PRACH configuration of the preamble corresponding to the SSB in the 4-step RACH.
  • the time-frequency resource configuration includes at least one of the following: the time-frequency resource configuration of the payload corresponding to the cell in the 2-step RACH, and the time-frequency resource configuration of the payload corresponding to the SSB in the 2-step RACH.
  • the PRACH configuration and/or time-frequency resource configuration acquired by the second network device is used to instruct the terminal device to access the DU connected to the CU-CP during the random access process.
  • the PRACH configuration includes at least one of the following: the PRACH configuration of the preamble corresponding to the cell in the 2-step RACH, the PRACH configuration of the preamble corresponding to the SSB in the 2-step RACH, the PRACH configuration of the preamble corresponding to the cell in the 4-step RACH, The PRACH configuration of the preamble corresponding to the SSB in the 4-step RACH.
  • the time-frequency resource configuration includes at least one of the following: the time-frequency resource configuration of the payload corresponding to the cell in the 2-step RACH, and the time-frequency resource configuration of the payload corresponding to the SSB in the 2-step RACH.
  • the PRACH configuration and/or time-frequency resource configuration of the second network device is used to indicate the configuration of random access resources used by the terminal device to access the DU during the random access process.
  • the PRACH configuration includes at least one of the following: the PRACH configuration of the preamble corresponding to the cell in the 2-step RACH, the PRACH configuration of the preamble corresponding to the SSB in the 2-step RACH, the PRACH configuration of the preamble corresponding to the cell in the 4-step RACH, The PRACH configuration of the preamble corresponding to the SSB in the 4-step RACH.
  • the time-frequency resource configuration includes at least one of the following: the time-frequency resource configuration of the payload corresponding to the cell in the 2-step RACH, and the time-frequency resource configuration of the payload corresponding to the SSB in the 2-step RACH.
  • the second network device may send the PRACH configuration and/or time-frequency resource configuration of the second network device to the first network device.
  • Resource configuration or, the second network device first updates the PRACH configuration and/or time-frequency resource configuration of the second network device according to the received PRACH configuration and/or time-frequency resource configuration of the first network device, and then reports the first network device Send the updated PRACH configuration and/or time-frequency resource configuration of the second network device.
  • the first network device after the first network device obtains the PRACH configuration and/or time-frequency resource configuration, it sends the PRACH configuration and/or time-frequency resource configuration to the second network device, so that the second network device can
  • the PRACH configuration and/or time-frequency resource configuration of the first network device is updated, and the PRACH configuration and/or time-frequency resource configuration of the second network device is updated to reduce the PRACH configuration and/or time-frequency resource configuration of the first network device.
  • the PRACH configuration and/or time-frequency resource configuration of the second network device may conflict, thereby reducing the possibility of conflict when the terminal device performs random access according to the PRACH configuration and/or time-frequency resource configuration, and improving the random access of the terminal device. Into the probability of success, thereby improving communication efficiency.
  • FIG. 9 is a schematic flowchart of another communication method provided by an embodiment of this application. Referring to Figure 9, the method may include:
  • S901 The first network device sends a handover request to the second network device.
  • FIG. 9 can be applied to a handover scenario.
  • the first network device and the second network device are gNB or ng-eNB
  • the first network device is the gNB or ng-eNB that the terminal device is connected to before the handover
  • the second network device is the gNB or ng-eNB that the terminal device is connected to after the handover.
  • Incoming gNB or ng-eNB The first network device may send a handover request (handover request) message to the second network device, and the message carries the identifier of the terminal device.
  • the first network device and the second network device are CUs
  • the first network device is the CU accessed by the terminal device before the handover
  • the second network device is the CU accessed by the terminal device after the handover.
  • the first network device may send a handover request (handover request) message to the second network device, and the message carries the identifier of the terminal device.
  • the first network device and the second network device are CU-CP
  • the first network device is the CU-CP that the terminal device is connected to before handover
  • the second network device is the CU-CP that the terminal device is connected to after the handover.
  • the first network device may send a handover request (handover request) message to the second network device, and the message carries the identifier of the terminal device.
  • the first network device When the first network device is a CU and the second network device is a DU to which the CU is connected, the first network device may send a terminal device context setup request message (UE context setup request) to the second network device, in which Carry the identification of the terminal device.
  • UE context setup request a terminal device context setup request message
  • the first network device may send a terminal device context setup request message (UE context setup request) to the second network device ,
  • the message carries the identification of the terminal device.
  • the second network device determines the RACH configuration for the terminal device.
  • the RACH configuration determined by the second network device for the terminal device is used to indicate the random access that the terminal device uses in the random access process of accessing the second network device Resource configuration, and the RACH configuration is determined by the second network device.
  • the RACH configuration determined by the second network device for the terminal device is used to instruct the terminal device to access the configuration of the random access resource used by the DU to which the CU is connected during the random access process , And the random access configuration is determined by the DU.
  • the RACH configuration determined by the second network device for the terminal device is used to instruct the terminal device to access the random access used by the DU connected to the CU-CP during the random access process.
  • Access resource configuration, and the random access configuration is determined by the DU.
  • the RACH configuration determined by the second network device for the terminal device is used to indicate the configuration of random access resources used by the terminal device to access the DU during the random access process, and the random The access configuration is determined by the DU.
  • the RACH configuration includes at least one of the following: 2-step RACH preamble index value and physical random access channel PRACH mask index value, 4-step RACH preamble index value and physical random access channel PRACH mask index value.
  • the preamble index value is used to indicate the preamble used by the terminal device in the random access process
  • the PRACH mask index value is used to indicate the terminal device to transmit the time-frequency resource of the preamble in 2-step RACH, and to transmit in 2-step RACH The time-frequency resource of the payload, or the time-frequency resource of the preamble transmitted in the 4-step RACH.
  • the second network device sends a random access configuration to the first network device.
  • the second network device may send a handover request acknowledgement message to the first network device, and carry the RACH in the handover request acknowledgement message Configuration.
  • the second network device may send a handover request acknowledgement (handover request acknowledge) message to the first network device, and carry the RACH configuration in the handover request acknowledgement message.
  • handover request acknowledge a handover request acknowledgement
  • the second network device may send a handover request acknowledgement (handover request acknowledge) message to the first network device, and carry the RACH configuration in the handover request acknowledgement message.
  • handover request acknowledge a handover request acknowledgement
  • the second network device may send a terminal device context setup response message (UE context setup response) to the first network device, and send it to the terminal
  • the device context establishment response message carries the RACH configuration.
  • the second network device may send a terminal device context setup response message (UE context setup response) to the first network device , And carry the RACH configuration in the terminal device context establishment response message.
  • UE context setup response UE context setup response
  • S904 The first network device sends the RACH configuration to the terminal device.
  • the first network device may send an RRC reconfiguration (RRC reconfiguration) message to the terminal device, and carry the RACH configuration in the RRC reconfiguration message.
  • RRC reconfiguration RRC reconfiguration
  • the terminal device accesses the second network device according to the random access configuration.
  • the terminal device accessing the second network device according to the RACH configuration means that the terminal device uses the random access resource determined by the second network device for the terminal device to access the first network device.
  • the terminal device accessing the second network device according to the RACH configuration means uses the DU connected to the CU as the random access resource determined by the terminal device to access the DU.
  • the terminal device accessing the second network device according to the RACH configuration means uses the DU connected to the CU-CP as the random access resource determined by the terminal device, Access to the DU.
  • the terminal device accessing the second network device according to the RACH configuration means that the terminal device uses the random access resource determined by the DU for the terminal device to access the DU.
  • the terminal device executes a random access procedure according to the RACH configuration to implement access to the second network device.
  • the second network device determines a dedicated RACH configuration for the terminal device, so that the terminal device can be based on the dedicated RACH configuration.
  • the RACH configuration is connected to the second network device. Because the RACH configuration is dedicated to the terminal device, it avoids conflicts between the terminal device and other terminal devices during the handover process, and improves the random access success of the terminal device during the handover process. The probability of increasing communication efficiency.
  • FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of the application.
  • the communication device 10 can be applied to network equipment.
  • the communication device 10 may include a receiving module 11 and a processing module 12, where:
  • the receiving module 11 is configured to receive first information sent by a terminal device, where the first information is information about a two-step random access process of the terminal device;
  • the processing module 12 is configured to update the random access configuration according to the first information.
  • the receiving module 11 may execute S501 in the embodiment in FIG. 5 and S601 in the embodiment in FIG. 6.
  • processing module 12 may execute S502 in the embodiment in FIG. 5 and S602 in the embodiment in FIG. 6.
  • the communication device provided in the embodiment of the present application can execute the technical solutions shown in the foregoing method embodiments, and its implementation principles and beneficial effects are similar, and will not be repeated this time.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether contention for at least one random access preamble is detected in the sent random access preamble
  • Indication information used to indicate whether competition for at least one time-frequency resource is detected in the time-frequency resources used by the transmitted payload.
  • the random access configuration is a random access configuration corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a random access configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • FIG. 11 is a schematic structural diagram of another communication device provided by an embodiment of this application. On the basis of the embodiment shown in Fig. 10, please refer to Fig. 11.
  • the device further includes a sending module 13, wherein,
  • the sending module 13 is configured to send the updated random access configuration to the DU;
  • the network device includes a centralized unit CU and a distributed unit DU, and the CU is connected to the DU.
  • the receiving module 11 is further configured to receive the random access configuration sent by the DU before the processing module 12 updates the random access configuration according to the first information .
  • the network device includes a CU and a DU, and the CU includes a centralized unit control plane CU-CP and a centralized unit user plane CU-UP;
  • the sending module 13 is further configured to send the updated random access configuration to the DU.
  • the receiving module 11 is further configured to receive the random access configuration sent by the DU before the processing module updates the random access configuration according to the first information.
  • the random access configuration includes at least one of the following information: physical random access channel PRACH configuration of the random access preamble in two-step random access, and net The time-frequency resource configuration of the load, the indication information used to indicate whether it is possible to fall back from the two-step random access to the four-step random access, the PRACH configuration of the random access preamble in the four-step random access, the two-step random access Random access preamble grouping, random access preamble grouping in four-step random access, random access fallback parameters in two-step random access, random access fallback parameters in four-step random access, two-step random access Random access transmission power control parameters, random access transmission power control parameters in four-step random access.
  • the communication device provided in the embodiment of the present application can execute the technical solutions shown in the foregoing method embodiments, and its implementation principles and beneficial effects are similar, and will not be repeated this time.
  • FIG. 12 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication device 20 can be applied to network equipment. 12, the communication device 20 includes a receiver 21, a processor 22, and a memory 23, the memory 23 stores program instructions, and the processor 22 executes the program instructions in the memory 23, for example, The receiver 21, the processor 22, and the memory 23 can communicate via the communication bus 24, where:
  • the receiver 21 is configured to receive first information sent by a terminal device, where the first information is information of a two-step random access process of the terminal device;
  • the processor 22 is configured to update a random access configuration according to the first information.
  • the receiver 21 may have the function of the receiving module 11 shown in the embodiment of FIG. 10.
  • the processor 22 may have the function of the processing module 12 shown in the embodiment of FIG. 10.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether contention for at least one random access preamble is detected in the sent random access preamble
  • Indication information used to indicate whether competition for at least one time-frequency resource is detected in the time-frequency resources used by the transmitted payload.
  • the random access configuration is a random access configuration corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a random access configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • FIG. 13 is a schematic structural diagram of another communication device provided by an embodiment of this application. Based on the embodiment in FIG. 12, referring to FIG. 13, the communication device 20 may further include a transmitter 25, where:
  • the transmitter 25 is configured to send the updated random access configuration to the DU;
  • the network device includes a centralized unit CU and a distributed unit DU, and the CU is connected to the DU;
  • the receiver 21 is further configured to receive the random access configuration sent by the DU before the processor 22 updates the random access configuration according to the first information .
  • the network device includes a CU and a DU, and the CU includes a centralized unit control plane CU-CP and a centralized unit user plane CU-UP;
  • the transmitter 25 is further configured to send the updated random access configuration to the DU.
  • the receiver 21 is further configured to receive the random access configuration sent by the DU before the processor updates the random access configuration according to the first information.
  • the random access configuration includes at least one of the following information: physical random access channel PRACH configuration of the random access preamble in two-step random access, and net The time-frequency resource configuration of the load, the indication information used to indicate whether it is possible to fall back from the two-step random access to the four-step random access, the PRACH configuration of the random access preamble in the four-step random access, the two-step random access Random access preamble grouping, random access preamble grouping in four-step random access, random access fallback parameters in two-step random access, random access fallback parameters in four-step random access, two-step random access Random access transmission power control parameters, random access transmission power control parameters in four-step random access.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 14 is a schematic structural diagram of yet another communication device provided by an embodiment of this application.
  • the communication device 30 can be applied to terminal equipment.
  • the communication device 30 includes a processing module 31 and a sending module 32, where
  • the processing module 31 is configured to obtain first information, where the first information is information of a two-step random access process of the terminal device;
  • the sending module 32 is configured to send the first information to a network device.
  • the sending module 32 may execute S501 in the embodiment in FIG. 5 and S601 in the embodiment in FIG. 6.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether contention for at least one random access preamble is detected in the sent random access preamble
  • Indication information used to indicate whether competition for at least one time-frequency resource is detected in the time-frequency resources used by the transmitted payload.
  • the random access configuration is a random access configuration corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a random access configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the random access configuration includes at least one of the following information: physical random access channel PRACH configuration of the random access preamble in two-step random access, and net The time-frequency resource configuration of the load, the indication information used to indicate whether the two-step random access can fall back to the four-step random access, the PRACH configuration of the random access preamble in the four-step random access, the two-step random access Random access preamble grouping, random access preamble grouping in four-step random access, random access fallback parameters in two-step random access, random access fallback parameters in four-step random access, two-step random access Random access transmission power control parameters, random access transmission power control parameters in four-step random access.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 15 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication device 40 can be applied to terminal equipment.
  • the communication device 40 includes a processor 41, a transmitter 42, and a memory 43.
  • the memory 43 stores program instructions, and the processor 41 executes the program instructions in the memory 43.
  • the processor 41, the transmitter 42 and the memory 43 can communicate through the communication bus 44, where:
  • the processor 41 is configured to obtain first information, where the first information is information about a two-step random access process of the terminal device;
  • the transmitter 42 is configured to send the first information to a network device.
  • the processor 41 may have the function of the processing module 31 shown in the embodiment of FIG. 14.
  • the transmitter 42 may have the function of the transmitting module 42 shown in the embodiment of FIG. 14.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether contention for at least one random access preamble is detected in the sent random access preamble
  • Indication information used to indicate whether competition for at least one time-frequency resource is detected in the time-frequency resources used by the transmitted payload.
  • the random access configuration is a random access configuration corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a random access configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the random access configuration includes at least one of the following information: physical random access channel PRACH configuration of the random access preamble in two-step random access, and net The time-frequency resource configuration of the load, the indication information used to indicate whether it is possible to fall back from the two-step random access to the four-step random access, the PRACH configuration of the random access preamble in the four-step random access, the two-step random access Random access preamble grouping, random access preamble grouping in four-step random access, random access fallback parameters in two-step random access, random access fallback parameters in four-step random access, two-step random access Random access transmission power control parameters, random access transmission power control parameters in four-step random access.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 16 is a schematic structural diagram of still another communication device provided by an embodiment of this application.
  • the communication device 50 can be applied to a centralized unit CU.
  • the communication device 50 includes a receiving module 51, a processing module 52, and a sending module 53, wherein,
  • the receiving module 51 is configured to receive first information sent by a terminal device, where the first information is information of a four-step random access process of the terminal device;
  • the processing module 52 is configured to update the random access configuration according to the first information
  • the sending module 53 is configured to send the updated random access configuration to the distributed unit DU.
  • the receiving module 51 may execute S701 in the embodiment of FIG. 7.
  • processing module 52 may execute S702 in the embodiment of FIG. 7.
  • the sending module 53 may execute S703 in the embodiment of FIG. 7.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • the receiving module 51 is further configured to receive the random access configuration sent by the DU before the processing module 52 updates the random access configuration according to the first information.
  • the CU includes a centralized unit control plane CU-CP and a centralized unit user plane CU-UP, and the communication device is applied to the CU-CP.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether competition for at least one random access preamble is detected in the sent random access preamble.
  • the random access configuration is configuration information corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the random access configuration includes at least one of the following information: PRACH configuration of the random access preamble in the four-step random access, random access preamble packet in the four-step random access, Random access fallback parameters in four-step random access, and random access transmission power control parameters in four-step random access.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 17 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication device 60 can be applied to a centralized unit CU.
  • the communication device 60 includes a receiver 61, a processor 62, a transmitter 63, and a memory 64.
  • the memory 64 stores program instructions, and the processor 62 executes the program instructions in the memory 64.
  • the processor 41, the transmitter 42 and the memory 43 may communicate through a communication bus 65, where:
  • the receiver 61 is configured to receive first information sent by a terminal device, where the first information is information about a four-step random access process of the terminal device;
  • the processor 62 is configured to update a random access configuration according to the first information
  • the transmitter 63 is configured to send the updated random access configuration to the distributed unit DU.
  • the receiver 61 may have the function of the receiving module 51 shown in the embodiment of FIG. 16.
  • the processor 62 may have the function of the processing module 62 shown in the embodiment of FIG. 16.
  • the transmitter 62 may have the function of the transmitting module 63 shown in the embodiment of FIG. 16.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • the receiver 61 is further configured to receive the random access configuration sent by the DU before the processor 62 updates the random access configuration according to the first information.
  • the CU includes a centralized unit control plane CU-CP and a centralized unit user plane CU-UP, and the communication device is applied to the CU-CP.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether competition for at least one random access preamble is detected in the sent random access preamble.
  • the random access configuration is configuration information corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the random access configuration includes at least one of the following information: PRACH configuration of the random access preamble in the four-step random access, random access preamble packet in the four-step random access, Random access fallback parameters in four-step random access, and random access transmission power control parameters in four-step random access.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 18 is a schematic structural diagram of yet another communication device provided by an embodiment of this application.
  • the communication device 70 can be applied to terminal equipment.
  • the communication device 70 includes a processing module 71 and a sending module 72, where:
  • the processing module 71 is configured to obtain first information, where the first information is information of a four-step random access process of the terminal device;
  • the sending module 72 is configured to send the first information to the centralized unit CU, where the first information is used to cause the CU to update the random access configuration.
  • the sending module 72 may execute S701 in the embodiment of FIG. 7.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether competition for at least one random access preamble is detected in the sent random access preamble.
  • the random access configuration is configuration information corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the random access configuration includes at least one of the following information: PRACH configuration of the random access preamble in the four-step random access, random access preamble packet in the four-step random access, Random access fallback parameters in four-step random access, and random access transmission power control parameters in four-step random access.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 19 is a schematic structural diagram of still another communication device provided by an embodiment of this application.
  • the communication device 80 can be applied to terminal equipment. 19, the communication device 80 includes a processor 81, a transmitter 82, and a memory 83.
  • the memory 83 stores program instructions.
  • the processor 81 executes the program instructions in the memory 83.
  • the processor 81, The transmitter 82 and the memory 83 can communicate through a communication bus 84, where,
  • the processor 81 is configured to obtain first information, where the first information is information of a four-step random access process of the terminal device;
  • the transmitter 82 is configured to send the first information to the centralized unit CU, where the first information is used to cause the CU to update the random access configuration.
  • the processor 81 has the function of the processing module 71 in the embodiment of FIG. 18.
  • the transmitter 82 has the function of the transmitting module 72 in the embodiment of FIG. 18.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • the first information includes at least one of the following information:
  • Indication information used to indicate whether competition for at least one random access preamble is detected in the sent random access preamble.
  • the random access configuration is configuration information corresponding to the cell where the terminal device is located, or,
  • the random access configuration is a configuration corresponding to a physical broadcast channel block SSB and a synchronization signal used when the terminal device performs random access.
  • the random access configuration includes at least one of the following information: PRACH configuration of the random access preamble in the four-step random access, random access preamble packet in the four-step random access, Random access fallback parameters in four-step random access, and random access transmission power control parameters in four-step random access.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 20 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication device 90 can be applied to network equipment.
  • the communication device 90 includes a processing module 91 and a sending module 92, where:
  • the processing module 91 is configured to obtain a random access configuration, and the random access configuration includes at least one of the following: a two-step random access random access configuration, a four-step random access synchronization signal and a physical broadcast channel block Random access configuration corresponding to SSB;
  • the sending module 92 is configured to send the random access configuration to the second network device.
  • processing module 91 may execute S801 in the embodiment of FIG. 8.
  • the sending module 92 may execute S802 in the embodiment of FIG. 8.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • the random access configuration of the two-step random access includes at least one of the following: physical random access channel PRACH configuration of the random access preamble in the two-step random access, and two-step random access Time-frequency resource configuration of incoming payload.
  • the PRACH configuration is a PRACH configuration corresponding to a cell or a PRACH configuration corresponding to an SSB.
  • the random access configuration corresponding to the SSB of the four-step random access includes: the PRACH configuration of the random access preamble corresponding to each SSB of the four-step random access.
  • the sending module 92 is specifically configured to:
  • the first message is an Xn interface establishment request message or an X2 interface establishment request message or an F1 establishment request message; or,
  • the first message is an Xn establishment response message or an X2 establishment response message or an F1 establishment response message; or,
  • the first message is a next-generation radio access network node configuration update message or a centralized unit configuration update message; or,
  • the first message is a next-generation radio access network node configuration update confirmation message or a distributed unit configuration update confirmation message.
  • the first message is a node configuration update confirmation message.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is a centralized unit control plane CU-CP in a third CU
  • the second network device is a CU-CP in a fourth CU.
  • the first network device is a fifth CU
  • the second network device is a DU to which the fifth CU is connected.
  • the first network device is a CU-CP in a sixth CU
  • the second network device is a DU to which the sixth CU is connected.
  • the random access configuration further includes a random access configuration corresponding to a four-step random access cell.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 21 is a schematic structural diagram of still another communication device provided by an embodiment of this application.
  • the communication device 100 can be applied to network equipment. 21, the communication device 100 includes a processor 1001, a transmitter 1002, and a memory 1003.
  • the memory 1003 stores program instructions.
  • the processor 1001 executes the program instructions in the memory 1003.
  • the processor 1001 sends The device 1002 and the memory 1003 can communicate through the communication bus 1004, where:
  • the processor 1001 is configured to obtain a random access configuration, where the random access configuration includes at least one of the following: a two-step random access random access configuration, a four-step random access synchronization signal and a physical broadcast channel block Random access configuration corresponding to SSB;
  • the transmitter 1002 is configured to send the random access configuration to a second network device.
  • the processor 1001 may have the function of the processing module 901 in the embodiment in FIG. 20.
  • the transmitter 1002 may have the function of the transmitting module 902 in the embodiment of FIG. 20.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • the random access configuration of the two-step random access includes at least one of the following: physical random access channel PRACH configuration of the random access preamble in the two-step random access, and two-step random access Time-frequency resource configuration of incoming payload.
  • the PRACH configuration is a PRACH configuration corresponding to a cell or a PRACH configuration corresponding to an SSB.
  • the random access configuration corresponding to the SSB of the four-step random access includes: the PRACH configuration of the random access preamble corresponding to each SSB of the four-step random access.
  • the transmitter 1002 is specifically configured to:
  • the first message is an Xn establishment request message or an X2 establishment request message or an F1 establishment request message; or,
  • the first message is an Xn establishment response message or an X2 establishment response message or an F1 establishment response message; or,
  • the first message is a next-generation radio access network node configuration update message or a centralized unit configuration update message; or,
  • the first message is a next-generation radio access network node configuration update confirmation message or a distributed unit configuration update confirmation message.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is a centralized unit control plane CU-CP in a third CU
  • the second network device is a CU-CP in a fourth CU.
  • the first network device is a fifth CU
  • the second network device is a DU to which the fifth CU is connected.
  • the first network device is a CU-CP in a sixth CU
  • the second network device is a DU to which the sixth CU is connected.
  • the random access configuration further includes a random access configuration corresponding to a four-step random access cell.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 22 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication device 200 can be applied to network equipment.
  • the communication device 200 includes a processing module 2001 and a sending module 2002, where:
  • the processing module 2001 is configured to obtain a random access configuration corresponding to a terminal device, where the random access configuration is determined by a second network device for the terminal device, and the random access configuration includes at least one of the following: Random access preamble index value and physical random access channel PRACH mask index value in one-step random access, random access preamble index value and physical random access channel PRACH mask index value in four-step random access;
  • the sending module 2002 is configured to send the random access configuration to a terminal device, where the random access configuration is used to enable the terminal device to access the second network device according to the random access configuration.
  • processing module 2001 may execute S903 in the embodiment of FIG. 9.
  • the sending module 2002 may execute S901 and S904 in the embodiment of FIG. 9.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is a centralized unit control plane CU-CP in a third CU
  • the second network device is a CU-CP in a fourth CU.
  • FIG. 23 is a schematic structural diagram of still another communication device provided by an embodiment of this application.
  • the communication device 200 further includes a receiving module 2003, where:
  • the receiving module 2003 is configured to receive a handover request confirmation message sent by the second network device, where the handover request confirmation message includes the random access configuration.
  • the sending module 2002 is further configured to send a handover request message to the second network device before the receiving module 2003 receives the handover request confirmation message sent by the second network device,
  • the handover request message includes the identification of the terminal device.
  • the first network device is a fifth CU
  • the second network device is a first DU to which the fifth CU is connected.
  • the first network device is the CU-CP in the sixth CU
  • the second network device is the second DU connected to the CU-CP in the sixth CU.
  • the acquiring, by the first network device, the random access configuration corresponding to the terminal device includes:
  • the first network device receives a terminal device context establishment response message sent by the second network device, where the terminal device context establishment response message includes the random access configuration.
  • the method before the first network device receives the terminal device context establishment response message sent by the second network device, the method further includes:
  • the first network device sends a terminal device context establishment request message to the second network device, where the terminal device context establishment request message includes the identifier of the terminal device.
  • the sending module 2002 is specifically configured to send an RRC reconfiguration message to the terminal device, where the RRC reconfiguration message includes the random access configuration.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 24 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication device 300 can be applied to network equipment. 24, the communication device 300 includes a processor 3001, a transmitter 3002, and a memory 3003.
  • the memory 3003 stores program instructions.
  • the processor 3001 executes the program instructions in the memory 3003.
  • the processor 3001 sends The device 3002 and the memory 3003 can communicate through the communication bus 3004, where,
  • the processor 3001 is configured to obtain a random access configuration corresponding to a terminal device, where the random access configuration is determined by a second network device for the terminal device, and the random access configuration includes at least one of the following: Random access preamble index value and physical random access channel PRACH mask index value in one-step random access, random access preamble index value and physical random access channel PRACH mask index value in four-step random access;
  • the transmitter 3002 is configured to send the random access configuration to a terminal device, where the random access configuration is used to enable the terminal device to access the second network device according to the random access configuration.
  • the processor 3001 may have the function of the processing module 2001 in the embodiment in FIG. 22.
  • the transmitter 3002 may have the function of the transmitting module 2002 in the embodiment of FIG. 22.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is a centralized unit control plane CU-CP in a third CU
  • the second network device is a CU-CP in a fourth CU.
  • FIG. 25 is a schematic structural diagram of still another communication device provided by an embodiment of this application. Based on the embodiment shown in FIG. 24, referring to FIG. 25, the communication device 300 further includes a receiver 3005, wherein,
  • the receiver 3005 is configured to receive a handover request confirmation message sent by the second network device, where the handover request confirmation message includes the random access configuration.
  • the sending module 3002 is further configured to send a handover request message to the second network device before the receiving module 3005 receives the handover request confirmation message sent by the second network device,
  • the handover request message includes the identification of the terminal device.
  • the first network device is a fifth CU
  • the second network device is a first DU to which the fifth CU is connected.
  • the first network device is the CU-CP in the sixth CU
  • the second network device is the second DU connected to the CU-CP in the sixth CU.
  • the acquiring, by the first network device, the random access configuration corresponding to the terminal device includes:
  • the first network device receives a terminal device context establishment response message sent by the second network device, where the terminal device context establishment response message includes the random access configuration.
  • the method before the first network device receives the terminal device context establishment response message sent by the second network device, the method further includes:
  • the first network device sends a terminal device context establishment request message to the second network device, where the terminal device context establishment request message includes the identifier of the terminal device.
  • the sending module 3002 is specifically configured to send an RRC reconfiguration message to the terminal device, where the RRC reconfiguration message includes the random access configuration.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 26 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication device 400 is applied to terminal equipment.
  • the communication device 400 includes a processing module 4001 and a receiving module 4002, where
  • the receiving module 4001 is configured to receive a random access configuration sent by a first network device, where the random access configuration is allocated by a second network device to the terminal device, and the random access configuration includes at least one of the following : Random access preamble index value and physical random access channel PRACH mask index value in two-step random access, random access preamble index value and physical random access channel PRACH mask index value in four-step random access ;
  • the processing module 4002 is configured to access the second network device according to the random access configuration.
  • the receiving module 4001 may execute S904 in the embodiment of FIG. 9.
  • processing module 4002 may execute S905 in the embodiment of FIG. 9.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is the control plane CU-CP in the third CU
  • the second network device is the CU-CP in the fourth CU.
  • the first network device is a fifth CU
  • the second network device is a first DU to which the fifth CU is connected.
  • the first network device is the CU-CP in the sixth CU
  • the second network device is the second DU connected to the CU-CP in the sixth CU.
  • the receiving module 4001 is specifically configured to: receive an RRC reconfiguration message, where the RRC reconfiguration message includes the random access configuration.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 27 is a schematic structural diagram of yet another communication device provided by an embodiment of this application.
  • the communication device 500 can be applied to terminal equipment.
  • the communication device 500 includes a processor 5001, a receiver 5002, and a memory 5003.
  • the memory 5003 stores program instructions, and the processor 5001 executes the program instructions in the memory 5003, for example,
  • the processor 5001, the receiver 5002, and the memory 5003 communicate through a communication bus 5004, where:
  • the receiver 5002 is configured to receive a random access configuration sent by a first network device, where the random access configuration is allocated by a second network device to the terminal device, and the random access configuration includes at least one of the following : Random access preamble index value and physical random access channel PRACH mask index value in two-step random access, random access preamble index value and physical random access channel PRACH mask index value in four-step random access ;
  • the processor 5003 is configured to access the second network device according to the random access configuration.
  • the receiver 5001 may have the function of the receiving module 4001 in the embodiment of FIG. 26.
  • the processor 5003 may have the function of the processing module 4002 in the embodiment of FIG. 26.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • the first network device is a first centralized unit CU
  • the second network device is a second CU.
  • the first network device is the control plane CU-CP in the third CU
  • the second network device is the CU-CP in the fourth CU.
  • the first network device is a fifth CU
  • the second network device is a first DU to which the fifth CU is connected.
  • the first network device is the CU-CP in the sixth CU
  • the second network device is the second DU connected to the CU-CP in the sixth CU.
  • the receiver 5001 is specifically configured to: receive an RRC reconfiguration message, where the RRC reconfiguration message includes the random access configuration.
  • the communication device shown in the embodiment of the present application can execute the technical solution shown in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • the foregoing processor may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (ASIC )Wait.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps in the embodiment of the service processing method disclosed in this application can be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the present application provides a storage medium, the storage medium is used to store a computer program, and the computer program is used to implement the communication method described in the foregoing embodiment.
  • All or part of the steps in the foregoing method embodiments can be implemented by a program instructing relevant hardware.
  • the aforementioned program can be stored in a readable memory.
  • the program executes the steps that include the foregoing method embodiments; and the foregoing memory (storage medium) includes: read-only memory (English: read-only memory, abbreviation: ROM), RAM, flash memory, hard disk, Solid state drives, magnetic tapes (English: magnetic tape), floppy disks (English: floppy disk), optical discs (English: optical disc) and any combination thereof.
  • These computer program instructions can be provided to the processing unit of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processing unit of the computer or other programmable data processing equipment are generated for use It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.
  • the term “including” and its variations may refer to non-limiting inclusion; the term “or” and its variations may refer to “and/or”.
  • the terms “first”, “second”, etc. in the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.
  • “plurality” means two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone.
  • the character “/” generally indicates that the associated objects are in an "or” relationship.

Abstract

本申请实施例提供一种通信方法、装置及设备，该方法包括：网络设备接收终端设备发送的第一信息，所述第一信息为所述终端设备的两步随机接入过程的信息；所述网络设备根据所述第一信息更新随机接入配置。提高通信的可靠性。

Description

通信方法、装置及设备
本申请要求于2019年03月29日提交中国专利局、申请号为201910253479.2、申请名称为通信方法、装置及设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法、装置及设备。
背景技术
在通信过程中，终端设备可以通过随机接入的方式接入网络设备，例如，网络设备可以为基站。
在实际应用过程中，网络设备对终端设备接入网络设备所使用的随机接入资源进行配置，终端设备使用从网络设备接收的随机接入配置指示的随机接入资源发起随机接入。然而，在现有技术中，随着网络状况的变化，例如无线信道的变化和网络负载的变化等，网络设备的随机接入配置在一些情况下不能很好地适应当前的网络状况，导致终端设备随机接入网络设备的成功的概率较低。
发明内容
本申请提供一种通信方法、装置及设备，提高了通信的可靠性。
第一方面，本申请实施例提供一种通信方法，网络设备接收终端设备发送的第一信息，并根据第一信息更新随机接入配置，其中，第一信息为终端设备的两步随机接入过程的信息。
在上述过程中，在终端设备通过2-step RACH接入网络设备之后，终端设备向网络设备发送终端设备的两步随机接入过程的信息，使得网络设备可以根据第一信息优化随机接入配置，提高了终端设备随机接入成功的概率，进而提高通信效率。
在一种可能的实施方式中，第一信息包括如下信息中的至少一种：终端设备在两步随机接入过程中发送的随机接入前导的次数；用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息；用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
在上述过程中，网络设备根据终端设备上报的上述第一信息，可以确定终端设备的两步随机接入过程的信息，进而可以根据上述第一信息对随机接入配置进行准确的优化，提高了终端设备随机接入成功的概率，进而提高通信效率。
在一种可能的实施方式中，随机接入配置为终端设备所在的小区对应的随机接入配置，或者，随机接入配置为终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的随机接入配置。
在一种可能的实施方式中，网络设备包括集中式单元CU和分布式单元DU，CU和DU 相连；相应的，网络设备接收终端设备发送的第一信息，包括：CU接收终端设备发送的第一信息。网络设备根据第一信息更新随机接入配置，包括：CU根据第一信息更新随机接入配置。CU根据第一信息更新随机接入配置之后，CU向DU发送更新后的随机接入配置。
在上述过程中，在网络设备为CU-DU架构时，在终端设备通过2-step RACH接入CU之后，CU可以获取终端设备的两步随机接入过程的信息，并根据第一信息优化随机接入配置，提高了终端设备随机接入成功的概率，进而提高通信效率。
在一种可能的实施方式中，CU根据第一信息更新随机接入配置之前，还包括：CU接收DU发送的随机接入配置。
在一种可能的实施方式中，网络设备包括CU和DU，CU包括集中式单元控制面CU-CP和集中式单元用户面CU-UP；相应的，网络设备接收终端设备发送的第一信息，包括：CU-CP接收终端设备发送的第一信息。网络设备根据第一信息更新随机接入配置，包括：CU-CP根据第一信息更新随机接入配置。CU-CP根据第一信息更新随机接入配置之后，CU-CP向DU发送更新后的随机接入配置。
在上述过程中，在终端设备通过2-step RACH接入CU-CP之后，CU-CP可以获取终端设备的两步随机接入过程的信息，并根据第一信息优化随机接入配置，提高了终端设备随机接入成功的概率，进而提高通信效率。
在一种可能的实施方式中，CU-CP根据第一信息更新随机接入配置之前，还包括：CU-CP接收DU发送的随机接入配置。
在一种可能的实施方式中，随机接入配置包括如下信息中的至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置、用于指示是否可以从两步随机接入回退至四步随机接入的指示信息、四步随机接入中随机接入前导的PRACH配置、两步随机接入中随机接入前导分组、四步随机接入中随机接入前导分组、两步随机接入中随机接入回退参数、四步随机接入中随机接入回退参数、两步随机接入中随机接入传输功率控制参数、四步随机接入中随机接入传输功率控制参数。
在上述过程中，通过对上述随机接入配置中的信息进行优化，可以提高终端设备随机接入成功的概率，进而提高通信效率。
第二方面，本申请实施例提供一种通信装置，包括接收器、处理器和存储器，所述存储器中存储有程序指令，所述处理器执行所述存储器中的程序指令，其中，
所述接收器用于，接收终端设备发送的第一信息，所述第一信息为所述终端设备的两步随机接入过程的信息；
所述处理器用于，根据所述第一信息更新随机接入配置。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在两步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息；以及
用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的随机接入配置，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的随机接入配置。
在一种可能的实施方式中，网络设备包括集中式单元CU和分布式单元DU，所述CU和所述DU相连；所述装置还包括发送器，其中，
所述发送器用于，向所述DU发送更新后的所述随机接入配置。
在一种可能的实施方式中，所述接收器还用于，在所述处理器根据所述第一信息更新所述随机接入配置之前接收所述DU发送的所述随机接入配置。
在一种可能的实施方式中，所述网络设备包括CU和DU，所述CU包括集中式单元控制面CU-CP和集中式单元用户面CU-UP；
发送器还用于，向所述DU发送更新后的所述随机接入配置。
在一种可能的实施方式中，所述接收器还用于，在所述处理器根据所述第一信息更新所述随机接入配置之前接收所述DU发送的所述随机接入配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置、用于指示是否可以从两步随机接入回退至四步随机接入的指示信息、四步随机接入中随机接入前导的PRACH配置、两步随机接入中随机接入前导分组、四步随机接入中随机接入前导分组、两步随机接入中随机接入回退参数、四步随机接入中随机接入回退参数、两步随机接入中随机接入传输功率控制参数、四步随机接入中随机接入传输功率控制参数。
第三方面，本申请实施例提供一种通信装置，包括接收模块和处理模块，其中，
所述接收模块用于，接收终端设备发送的第一信息，所述第一信息为所述终端设备的两步随机接入过程的信息；
所述处理模块用于，根据所述第一信息更新随机接入配置。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在两步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息；以及
用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的随机接入配置，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的随机接入配置。
在一种可能的实施方式中，网络设备包括集中式单元CU和分布式单元DU，所述CU和所述DU相连；所述装置还包括发送模块，其中，
所述发送模块用于，向所述DU发送更新后的所述随机接入配置。
在一种可能的实施方式中，所述接收模块还用于，在所述处理模块根据所述第一信息更新所述随机接入配置之前接收所述DU发送的所述随机接入配置。
在一种可能的实施方式中，所述网络设备包括CU和DU，所述CU包括集中式单元控制面CU-CP和集中式单元用户面CU-UP；
发送模块还用于，向所述DU发送更新后的所述随机接入配置。
在一种可能的实施方式中，所述接收模块还用于，在所述处理模块根据所述第一信息更新所述随机接入配置之前接收所述DU发送的所述随机接入配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置、用于指示是否可以从两步随机接入回退至四步随机接入的指示信息、四步随机接入中随机接入前导的PRACH配置、两步随机接入中随机接入前导分组、四步随机接入中随机接入前导分组、两步随机接入中随机接入回退参数、四步随机接入中随机接入回退参数、两步随机接入中随机接入传输功率控制参数、四步随机接入中随机接入传输功率控制参数。
第四方面，本申请实施例提供一种计算机可读存储介质，所述存储介质用于存储计算机程序，所述计算机程序被计算机或处理器执行时用于实现第一方面任一项所述的通信方法。
第五方面，本申请实施例提供一种通信方法，终端设备获取第一信息，并向网络设备发送第一信息，其中，第一信息为终端设备的两步随机接入过程的信息，第一信息用于使得所述网络设备更新随机接入配置。
在上述过程中，在终端设备通过2-step RACH接入网络设备之后，终端设备向网络设备发送终端设备的两步随机接入过程的信息，使得网络设备可以根据第一信息优化随机接入配置，提高了终端设备随机接入成功的概率，进而提高通信效率。
在一种可能的实施方式中，第一信息包括如下信息中的至少一种：终端设备在两步随机接入过程中发送的随机接入前导的次数；用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息；用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
在上述过程中，在终端设备上报上述第一信息之后，使得网络设备可以根据上述第一信息，可以确定终端设备的两步随机接入过程的信息，进而可以根据上述第一信息对随机接入配置进行准确的优化，提高了终端设备随机接入成功的概率，进而提高通信效率。
在一种可能的实施方式中，随机接入配置为终端设备所在的小区对应的随机接入配置，或者，随机接入配置为终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的随机接入配置。
在一种可能的实施方式中，随机接入配置包括如下信息中的至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置、用于指示是否可以从两步随机接入回退至四步随机接入的指示信息、四步随机接入中随机接入前导的PRACH配置、两步随机接入中随机接入前导分组、四步随机接入中随机接入前导分组、两步随机接入中随机接入回退参数、四步随机接入中随机接入回退参数、两步随机接入中随机接入传输功率控制参数、四步随机接入中随机接入传输功率控制参数。
在上述过程中，通过对上述随机接入配置中的信息进行优化，可以提高终端设备随机接入成功的概率，进而提高通信效率。
第六方面，本申请实施例提供一种通信装置，包括处理器、发送器和存储器，所述存储器中存储有程序指令，所述处理器执行所述存储器中的程序指令，其中，
所述处理器用于，获取第一信息，所述第一信息为所述终端设备的两步随机接入过程 的信息；
所述发送器用于，向网络设备发送所述第一信息。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在两步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息；
用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的随机接入配置，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的随机接入配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置、用于指示是否可以从两步随机接入回退至四步随机接入的指示信息、四步随机接入中随机接入前导的PRACH配置、两步随机接入中随机接入前导分组、四步随机接入中随机接入前导分组、两步随机接入中随机接入回退参数、四步随机接入中随机接入回退参数、两步随机接入中随机接入传输功率控制参数、四步随机接入中随机接入传输功率控制参数。
第七方面，本申请实施例提供一种通信装置，包括处理模块和发送模块，其中，
所述处理模块用于，获取第一信息，所述第一信息为所述终端设备的两步随机接入过程的信息；
所述发送模块用于，向网络设备发送所述第一信息。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在两步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息；以及
用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的随机接入配置，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的随机接入配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置、用于指示是否可以从两步随机接入回退至四步随机接入的指示信息、四步随机接入中随机接入前导的PRACH配置、两步随机接入中随机接入前导分组、四步随机接入中随机接入前导分组、两步随机接入中随机接入回退参数、四步随机接入中随机接入回退参数、两步随机接入中随机接入传输功率控制参数、四步随机接入中随机接入传输功率控制参数。
第八方面，本申请实施例提供一种计算机可读存储介质，所述存储介质用于存储计算 机程序，所述计算机程序被计算机或处理器执行时用于实现第五方面任一项所述的通信方法。
第九方面，本申请实施例提供一种通信方法，该方法包括：
集中式单元CU接收终端设备发送的第一信息，所述第一信息为所述终端设备的四步随机接入过程的信息；
所述CU根据所述第一信息更新随机接入配置；
所述CU向分布式单元DU发送更新后的所述随机接入配置。
在上述过程中，在终端设备通过4-step RACH接入DU之后，终端设备向CU发送第一信息，第一信息可以为终端设备的四步随机接入过程的信息，使得CU可以根据第一信息优化RACH配置，提高了终端设备随机接入成功的概率，进而提高通信效率。
在一种可能的实施方式中，所述CU根据所述第一信息更新随机接入配置之前，还包括：
所述CU接收所述DU发送的所述随机接入配置。
在一种可能的实施方式中，所述CU包括集中式单元控制面CU-CP和集中式单元用户面CU-UP；
所述CU接收终端设备发送的第一信息，包括：
所述CU-CP接收所述终端设备发送的所述第一信息；
所述CU根据所述第一信息更新随机接入配置，包括：
所述CU-CP根据所述第一信息更新随机接入配置；
所述CU向所述DU发送更新后的所述随机接入配置，包括：
所述CU-CP向所述DU发送更新后的所述随机接入配置；
所述CU接收所述DU发送的所述随机接入配置，包括：
所述CU-CP接收所述DU发送的所述随机接入配置。
在上述过程中，CU-CP可以接收终端设备发送的第一信息，根据第一信息更新随机接入配置，并向DU发送更新后的随机接入配置，提高了终端设备随机接入成功的概率，进而提高通信效率。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在四步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息。
在上述过程中，CU根据终端设备上报的上述第一信息，可以确定终端设备的四步随机接入过程的信息，进而可以根据上述第一信息对随机接入配置进行准确的优化，提高了终端设备随机接入成功的概率，进而提高通信效率。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的配置信息，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：四步随机接入中随机接入前导的PRACH配置、四步随机接入中随机接入前导分组、四步随机接入中 随机接入回退参数、四步随机接入中随机接入传输功率控制参数。
在上述过程中，通过对上述随机接入配置中的信息进行优化，可以提高终端设备随机接入成功的概率，进而提高通信效率。
第十方面，本申请实施例提供一种通信装置，应用于集中式单元CU，所述装置包括接收器、处理器、发送器和存储器，所述存储器中存储有程序指令，所述处理器执行所述存储器中的程序指令，其中，
所述接收器用于，接收终端设备发送的第一信息，所述第一信息为所述终端设备的四步随机接入过程的信息；
所述处理器用于，根据所述第一信息更新随机接入配置；
所述发送器用于，向所述分布式单元DU发送更新后的所述随机接入配置。
在一种可能的实施方式中，所述接收器还用于，在所述处理器根据所述第一信息更新随机接入配置之前，接收所述DU发送的所述随机接入配置。
在一种可能的实施方式中，所述CU包括集中式单元控制面CU-CP和集中式单元用户面CU-UP，所述通信装置应用于所述CU-CP。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在四步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的配置信息，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：四步随机接入中随机接入前导的PRACH配置、四步随机接入中随机接入前导分组、四步随机接入中随机接入回退参数、四步随机接入中随机接入传输功率控制参数。
第十一方面，本申请实施例提供一种通信装置，应用于集中式单元CU，所述装置包括接收模块、处理模块和发送模块，其中，
所述接收模块用于，接收终端设备发送的第一信息，所述第一信息为所述终端设备的四步随机接入过程的信息；
所述处理模块用于，根据所述第一信息更新随机接入配置；
所述发送模块用于，向所述分布式单元DU发送更新后的所述随机接入配置。
在一种可能的实施方式中，所述接收模块还用于，在所述处理模块根据所述第一信息更新随机接入配置之前，接收所述DU发送的所述随机接入配置。
在一种可能的实施方式中，所述CU包括集中式单元控制面CU-CP和集中式单元用户面CU-UP，所述通信装置应用于所述CU-CP。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在四步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的配置信息，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：四步随机接入中随机接入前导的PRACH配置、四步随机接入中随机接入前导分组、四步随机接入中随机接入回退参数、四步随机接入中随机接入传输功率控制参数。
第十二方面，本申请实施例提供一种计算机可读存储介质，所述存储介质用于存储计算机程序，所述计算机程序被计算机或处理器执行时用于实现第九方面任一项所述的通信方法。
第十三方面，本申请实施例提供一种通信方法，包括：
终端设备获取第一信息，所述第一信息为所述终端设备的四步随机接入过程的信息；
所述终端设备向集中式单元CU发送所述第一信息，所述第一信息用于使得所述CU更新随机接入配置。
在上述过程中，在终端设备通过4-step RACH接入DU之后，终端设备向CU发送第一信息，第一信息可以为终端设备的四步随机接入过程的信息，使得CU可以根据第一信息优化随机接入配置，提高了终端设备随机接入成功的概率，进而提高通信效率。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在四步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息。
在上述过程中，在终端设备向CU发送第一信息之后，CU根据终端设备上报的上述第一信息，可以确定终端设备的四步随机接入过程的信息，进而可以根据上述第一信息对随机接入配置进行准确的优化，提高了终端设备随机接入成功的概率，进而提高通信效率。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的配置信息，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：四步随机接入中随机接入前导的PRACH配置、四步随机接入中随机接入前导分组、四步随机接入中随机接入回退参数、四步随机接入中随机接入传输功率控制参数。
在上述过程中，通过对上述随机接入配置中的信息进行优化，可以提高终端设备随机接入成功的概率，进而提高通信效率。
第十四方面，本申请实施例提供一种通信装置，包括处理器、发送器和存储器，所述存储器中存储有程序指令，所述处理器执行所述存储器中的程序指令，其中，
所述处理器用于，获取第一信息，所述第一信息为所述终端设备的四步随机接入过程的信息；
所述发送器用于，向集中式单元CU发送所述第一信息，所述第一信息用于使得所述 CU更新随机接入配置。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在四步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的配置信息，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：四步随机接入中随机接入前导的PRACH配置、四步随机接入中随机接入前导分组、四步随机接入中随机接入回退参数、四步随机接入中随机接入传输功率控制参数。
第十五方面，本申请实施例提供一种通信装置，包括处理模块和发送模块，其中，
所述处理模块用于，获取第一信息，所述第一信息为所述终端设备的四步随机接入过程的信息；
所述发送模块用于，向集中式单元CU发送所述第一信息，所述第一信息用于使得所述CU更新随机接入配置。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在四步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的配置信息，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：四步随机接入中随机接入前导的PRACH配置、四步随机接入中随机接入前导分组、四步随机接入中随机接入回退参数、四步随机接入中随机接入传输功率控制参数。
第十六方面，本申请实施例提供一种计算机可读存储介质，所述存储介质用于存储计算机程序，所述计算机程序被计算机或处理器执行时用于实现第十三方面任一项所述的通信方法。
第十七方面，本申请实施例提供一种通信方法，包括：
第一网络设备获取随机接入配置，所述随机接入配置包括如下至少一种：两步随机接入的随机接入配置、四步随机接入的同步信号与物理广播信道块SSB对应的随机接入配置；
所述第一网络设备向第二网络设备发送所述随机接入配置。
在上述过程中，第一网络设备可以获取第一网络设备的随机接入配置，并向第二网络设备发送随机接入配置，这样，第二网络设备可以根据第一网络设备的随机接入配置，对第二网络设备的随机接入配置进行更新，减少终端设备根据随机接入配置进行随机接入时发生冲突的可能性，提高了终端设备随机接入成功的概率，进而提高通信效率。
在一种可能的实施方式中，所述两步随机接入的随机接入配置包括如下至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置。
在一种可能的实施方式中，所述PRACH配置为小区对应的PRACH配置或者SSB对应的PRACH配置。
在一种可能的实施方式中，所述四步随机接入的SSB对应的随机接入配置包括：四步随机接入的每个SSB对应的随机接入前导的PRACH配置。
在一种可能的实施方式中，所述第一网络设备向第二网络设备发送所述随机接入配置，包括：
所述第一网络设备向所述第二网络设备发送第一消息，所述第一消息包括所述随机接入配置。
在一种可能的实施方式中，所述第一消息为Xn建立请求消息或X2建立请求消息或F1建立请求消息；或者，
所述第一消息为Xn建立响应消息或X2建立响应消息或F1建立响应消息；或者，
所述第一消息为下一代无线接入网节点配置更新消息或者集中式单元配置更新消息；或者，
所述第一消息为下一代无线接入网节点配置更新确认消息或者分布式单元配置更新确认消息。
在上述过程中，第一网络设备可以通过现有的消息向第二网络设备发送随机接入配置，使得信令开销较小。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的集中式单元控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第五CU连接的DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU连接的DU。
在一种可能的实施方式中，所述随机接入配置还包括四步随机接入的小区对应的随机接入配置。其中，在上述四种网络架构下，所述随机接入配置还包括四步随机接入的小区对应的随机接入配置。
第十八方面，本申请实施例提供一种通信装置，包括处理器、发送器和存储器，所述存储器中存储有程序指令，所述处理器执行所述存储器中的程序指令，其中，
所述处理器用于，获取随机接入配置，所述随机接入配置包括如下至少一种：两步随机接入的随机接入配置、四步随机接入的同步信号与物理广播信道块SSB对应的随机接入配置；
所述发送器用于，向第二网络设备发送所述随机接入配置。
在一种可能的实施方式中，所述两步随机接入的随机接入配置包括如下至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频 资源配置。
在一种可能的实施方式中，所述PRACH配置为小区对应的PRACH配置或者SSB对应的PRACH配置。
在一种可能的实施方式中，所述四步随机接入的SSB对应的随机接入配置包括：四步随机接入的每个SSB对应的随机接入前导的PRACH配置。
在一种可能的实施方式中，所述发送器具体用于：
向所述第二网络设备发送第一消息，所述第一消息包括所述随机接入配置。
在一种可能的实施方式中，所述第一消息为Xn接口建立请求消息或X2接口建立请求消息或F1建立请求消息；或者，
所述第一消息为Xn建立响应消息或X2建立响应消息或F1建立响应消息；或者，
所述第一消息为下一代无线接入网节点配置更新消息或者集中式单元配置更新消息；或者，
所述第一消息为下一代无线接入网节点配置更新确认消息或者分布式单元配置更新确认消息。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的集中式单元控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第五CU连接的DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU连接的DU。
在一种可能的实施方式中，所述随机接入配置还包括四步随机接入的小区对应的随机接入配置。
第十九方面，本申请实施例提供一种通信装置，包括处理模块和发送模块，其中，
所述处理模块用于，获取随机接入配置，所述随机接入配置包括如下至少一种：两步随机接入的随机接入配置、四步随机接入的同步信号与物理广播信道块SSB对应的随机接入配置；
所述发送模块用于，向第二网络设备发送所述随机接入配置。
在一种可能的实施方式中，所述两步随机接入的随机接入配置包括如下至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置。
在一种可能的实施方式中，所述PRACH配置为小区对应的PRACH配置或者SSB对应的PRACH配置。
在一种可能的实施方式中，所述四步随机接入的SSB对应的随机接入配置包括：四步随机接入的每个SSB对应的随机接入前导的PRACH配置。
在一种可能的实施方式中，所述发送模块具体用于：
向所述第二网络设备发送第一消息，所述第一消息包括所述随机接入配置。
在一种可能的实施方式中，所述第一消息为Xn接口建立请求消息或X2接口建立请求 消息或F1建立请求消息；或者，
所述第一消息为Xn建立响应消息或X2建立响应消息或F1建立响应消息；或者，
所述第一消息为下一代无线接入网节点配置更新消息或者集中式单元配置更新消息；或者，
所述第一消息为下一代无线接入网节点配置更新确认消息或者分布式单元配置更新确认消息。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的集中式单元控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第五CU连接的DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU连接的DU。
在一种可能的实施方式中，所述随机接入配置还包括四步随机接入的小区对应的随机接入配置。
第二十方面，本申请实施例提供一种计算机可读存储介质，所述存储介质用于存储计算机程序，所述计算机程序被计算机或处理器执行时用于实现第十七方面任一项所述的通信方法。
第二十一方面，本申请实施例提供一种通信方法，包括：
第一网络设备获取终端设备对应的随机接入配置，所述随机接入配置为第二网络设备为所述终端设备确定的，所述随机接入配置包括如下至少一种：两步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值、四步随机接入中随机接入前导索引值和物理随机接入信道PRACH掩码索引值；
所述第一网络设备向终端设备发送所述随机接入配置，所述随机接入配置用于使得所述终端设备根据所述随机接入配置接入所述第二网络设备。
在上述过程中，在终端设备从第一网络设备切换至第二网络设备的过程中，第二网络设备为终端设备确定专用的PRACH配置，以使终端设备可以根据该专用的PRACH配置接入第二网络设备，由于该PRACH配置为该终端设备专用的，因此，避免了终端设备在切换的过程中与其它终端设备发生冲突，提高了终端设备在切换过程中随机接入成功的概率，进而提高通信效率。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的集中式单元控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
在一种可能的实施方式中，所述第一网络设备获取终端设备对应的随机接入配置，包括：
所述第一网络设备接收所述第二网络设备发送的切换请求确认消息，所述切换请求确认消息包括所述随机接入配置。
在上述过程中，第二网络设备可以通过现有的消息向第一网络设备发送随机接入配置，使得信令开销较小。
在一种可能的实施方式中，所述第一网络设备接收所述第二网络设备发送的切换请求确认消息之前，还包括：
所述第一网络设备向所述第二网络设备发送切换请求消息，所述切换请求消息包括所述终端设备的标识。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第五CU连接的第一DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU中的CU-CP连接的第二DU。
在一种可能的实施方式中，所述第一网络设备获取终端设备对应的随机接入配置，包括：
所述第一网络设备接收所述第二网络设备发送的终端设备上下文建立响应消息，所述终端设备上下文建立响应消息包括所述随机接入配置。
在上述过程中，第二网络设备可以通过现有的消息向第一网络设备发送随机接入配置，使得信令开销较小。
在一种可能的实施方式中，所述第一网络设备接收所述第二网络设备发送的终端设备上下文建立响应消息之前，还包括：
所述第一网络设备向所述第二网络设备发送终端设备上下文建立请求消息，所述终端设备上下文建立请求消息包括所述终端设备的标识。
在一种可能的实施方式中，所述第一网络设备向所述终端设备发送所述随机接入配置，包括：
所述第一网络设备向所述终端设备发送RRC重配置消息，所述RRC重配置消息包括所述随机接入配置。
在上述过程中，第一网络设备可以通过现有的消息向第二网络设备发送随机接入配置，使得信令开销较小。
第二十二方面，本申请实施例提供一种通信装置，包括处理器、发送器和存储器，所述存储器中存储有程序指令，所述处理器执行所述存储器中的程序指令，其中，
所述处理器用于，获取终端设备对应的随机接入配置，所述随机接入配置为第二网络设备为所述终端设备确定的，所述随机接入配置包括如下至少一种：两步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值、四步随机接入中随机接入前导索引值和物理随机接入信道PRACH掩码索引值；
所述发送器用于，向终端设备发送所述随机接入配置，所述随机接入配置用于使得所述终端设备根据所述随机接入配置接入所述第二网络设备。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的集中式单元控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
在一种可能的实施方式中，所述装置还包括接收模块，其中，
所述接收模块用于，接收所述第二网络设备发送的切换请求确认消息，所述切换请求确认消息包括所述随机接入配置。
在一种可能的实施方式中，所述发送模块还用于，在所述接收模块接收所述第二网络设备发送的切换请求确认消息之前向所述第二网络设备发送切换请求消息，所述切换请求消息包括所述终端设备的标识。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第五CU连接的第一DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU中的CU-CP连接的第二DU。
在一种可能的实施方式中，所述第一网络设备获取终端设备对应的随机接入配置，包括：
所述第一网络设备接收所述第二网络设备发送的终端设备上下文建立响应消息，所述终端设备上下文建立响应消息包括所述随机接入配置。
在上述过程中，第二网络设备可以通过现有的消息向第一网络设备发送随机接入配置，使得信令开销较小。
在一种可能的实施方式中，所述第一网络设备接收所述第二网络设备发送的终端设备上下文建立响应消息之前，还包括：
所述第一网络设备向所述第二网络设备发送终端设备上下文建立请求消息，所述终端设备上下文建立请求消息包括所述终端设备的标识。
在一种可能的实施方式中，所述发送模块具体用于：向所述终端设备发送RRC重配置消息，所述RRC重配置消息包括所述随机接入配置。
第二十三方面，本申请实施例提供一种通信装置，包括处理模块和发送模块，其中，
所述处理模块用于，获取终端设备对应的随机接入配置，所述随机接入配置为第二网络设备为所述终端设备确定的，所述随机接入配置包括如下至少一种：两步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值、四步随机接入中随机接入前导索引值和物理随机接入信道PRACH掩码索引值；
所述发送模块用于，向终端设备发送所述随机接入配置，所述随机接入配置用于使得所述终端设备根据所述随机接入配置接入所述第二网络设备。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的集中式单元控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
在一种可能的实施方式中，所述装置还包括接收模块，其中，
所述接收模块用于，接收所述第二网络设备发送的切换请求确认消息，所述切换请求确认消息包括所述随机接入配置。
在一种可能的实施方式中，所述发送模块还用于，在所述接收模块接收所述第二网络设备发送的切换请求确认消息之前向所述第二网络设备发送切换请求消息，所述切换请求消息包括所述终端设备的标识。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第 五CU连接的第一DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU中的CU-CP连接的第二DU。
在一种可能的实施方式中，所述第一网络设备获取终端设备对应的随机接入配置，包括：
所述第一网络设备接收所述第二网络设备发送的终端设备上下文建立响应消息，所述终端设备上下文建立响应消息包括所述随机接入配置。
在上述过程中，第二网络设备可以通过现有的消息向第一网络设备发送随机接入配置，使得信令开销较小。
在一种可能的实施方式中，所述第一网络设备接收所述第二网络设备发送的终端设备上下文建立响应消息之前，还包括：
所述第一网络设备向所述第二网络设备发送终端设备上下文建立请求消息，所述终端设备上下文建立请求消息包括所述终端设备的标识。
在一种可能的实施方式中，所述发送模块具体用于：向所述终端设备发送RRC重配置消息，所述RRC重配置消息包括所述随机接入配置。
第二十四方面，本申请实施例提供一种计算机可读存储介质，所述存储介质用于存储计算机程序，所述计算机程序被计算机或处理器执行时用于实现第二十一方面任一项所述的通信方法。
第二十五方面，本申请实施例提供一种通信方法，包括：
终端设备接收第一网络设备发送的随机接入配置，所述随机接入配置为第二网络设备为所述终端设备分配的，所述随机接入配置包括如下至少一种：两步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值、四步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值；
所述终端设备根据所述随机接入配置接入第二网络设备。
在上述过程中，在终端设备从第一网络设备切换至第二网络设备的过程中，第二网络设备为终端设备确定专用的PRACH配置，以使终端设备可以根据该专用的PRACH配置接入第二网络设备，由于该PRACH配置为该终端设备专用的，因此，避免了终端设备在切换的过程中与其它终端设备发生冲突，提高了终端设备在切换过程中随机接入成功的概率，进而提高通信效率。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第五CU连接的第一DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU中的CU-CP连接的第二DU。
在一种可能的实施方式中，终端设备接收第一网络设备发送的随机接入配置，包括：
所述终端设备接收RRC重配置消息，所述RRC重配置消息包括所述随机接入配置。
在上述过程中，第一网络设备可以通过现有的消息向终端设备发送随机接入配置，使得信令开销较小。
第二十六方面，本申请实施例提供一种通信装置，应用于终端设备，所述装置包括处理器、接收器和存储器，所述存储器中存储有程序指令，所述处理器执行所述存储器中的程序指令，其中，
所述接收器用于，接收第一网络设备发送的随机接入配置，所述随机接入配置为第二网络设备为所述终端设备分配的，所述随机接入配置包括如下至少一种：两步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值、四步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值；
所述处理器用于，根据所述随机接入配置接入第二网络设备。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第五CU连接的第一DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU中的CU-CP连接的第二DU。
在一种可能的实施方式中，所述接收器具体用于：接收RRC重配置消息，所述RRC重配置消息包括所述随机接入配置。
第二十七方面，本申请实施例提供一种通信装置，应用于终端设备，所述装置包括处理模块和接收模块，其中，
所述接收模块用于，接收第一网络设备发送的随机接入配置，所述随机接入配置为第二网络设备为所述终端设备分配的，所述随机接入配置包括如下至少一种：两步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值、四步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值；
所述处理模块用于，根据所述随机接入配置接入第二网络设备。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第五CU连接的第一DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU中的CU-CP连接的第二DU。
在一种可能的实施方式中，所述接收模块具体用于：接收RRC重配置消息，所述RRC重配置消息包括所述随机接入配置。
第二十八方面，本申请实施例提供一种计算机可读存储介质，所述存储介质用于存储计算机程序，所述计算机程序被计算机或处理器执行时用于实现第二十五方面任一项所述 的通信方法。
本申请实施例提供的通信方法、装置及设备，在终端设备通过2-step RACH接入网络设备之后，终端设备向网络设备发送第一信息，第一信息可以为终端设备的两步随机接入过程的信息，使得网络设备可以根据第一信息优化RACH配置，提高了终端设备随机接入成功的概率，进而提高通信效率。
附图说明
图1为一种5G通信系统中的CU-DU分离的基站的架构示意图；
图2为本申请实施例提供的系统架构图；
图3为本申请实施例提供的4-step RACH的流程示意图；
图4为本申请实施例提供的2-step RACH的流程示意图；
图5为本申请实施例提供的一种通信方法的流程示意图；
图6为本申请实施例提供的另一种通信方法的流程示意图；
图7为本申请实施例提供的另一种通信方法的流程示意图；
图8为本申请实施例提供的另一种通信方法的流程示意图；
图9为本申请实施例提供的另一种通信方法的流程示意图；
图10为本申请实施例提供的一种通信装置的结构示意图；
图11为本申请实施例提供的另一种通信装置的结构示意图；
图12为本申请实施例提供的又一种通信装置的结构示意图；
图13为本申请实施例提供的另一种通信装置的结构示意图；
图14为本申请实施例提供的又一种通信装置的结构示意图；
图15为本申请实施例提供的另一种通信装置的结构示意图；
图16为本申请实施例提供的再一种通信装置的结构示意图；
图17为本申请实施例提供的另一种通信装置的结构示意图；
图18为本申请实施例提供的又一种通信装置的结构示意图；
图19为本申请实施例提供的再一种通信装置的结构示意图；
图20为本申请实施例提供的另一种通信装置的结构示意图；
图21为本申请实施例提供的再一种通信装置的结构示意图；
图22为本申请实施例提供的又一种通信装置的结构示意图；
图23为本申请实施例提供的再一种通信装置的结构示意图；
图24为本申请实施例提供的另一种通信装置的结构示意图；
图25为本申请实施例提供的再一种通信装置的结构示意图；
图26为本申请实施例提供的另一种通信装置的结构示意图；
图27为本申请实施例提供的又一种通信装置的结构示意图。
具体实施方式
为了便于对本申请的理解，首先对本申请适用的通信系统以及本申请所涉及的设备进行介绍。
本申请所示的技术方案可以应用于第五代移动通信技术(The 5th generation mobile communication technology，5G)系统，5G系统还可以称为第五代移动通信技术新无线(new radio，NR)系统。也可以应用于长期演进(long term evolution，LTE)系统，还可以应用于通用移动通信系统(universal mobile telecommunications system，UMTS)陆地无线接入网(UMTS terrestrial radio access network，UTRAN)系统，或者全球移动通信系统(global system for mobile communication，GSM)/增强型数据速率GSM演进(enhanced data rate for GSM Evolution，EDGE)系统的无线接入网(GSM EDGE radio access network，GERAN)架构。本申请所示的技术方案还可以应用于其它通信系统，例如公共陆地移动网络(public land mobile network，PLMN)系统、5G之后的通信系统等，本申请对此不作限定。
本申请涉及终端设备，终端设备可以为包含无线收发功能、且可以与网络设备配合为用户提供通讯服务的设备。终端设备可以指工业机器人、工业自动化设备、终端设备、用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线终端设备、用户代理或用户装置。例如，终端设备可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络或5G之后的网络中的终端设备，例如，LTE网络中的V2X终端设备，5G网络中的V2X终端设备等，本申请对此不作限定。
本申请还涉及网络设备，网络设备可以为用于与终端设备进行通信的设备。网络设备可以是下一代基站(next generation NodeB，gNB)或者下一代演进型基站(next generation-evolved NodeB，ng-eNB)。其中，gNB为UE提供新空口(new radio,NR)的用户面功能和控制面功能,ng-eNB为UE提供演进型通用陆地无线接入(evolved universal terrestrial radio access,E-UTRA)的用户面功能和控制面功能，需要说明的是，gNB和ng-eNB仅是一种名称，用于表示支持5G网络系统的基站，并不具有限制意义。网络设备还可以为GSM系统或CDMA系统中的基站(base transceiver station，BTS)，也可以是WCDMA系统中的基站(nodeB，NB)，还可以是LTE系统中的演进型基站(evolutional node B，eNB或eNodeB)。或者，网络设备还可以为中继站、接入点、车载设备、可穿戴设备以及5G之后的网络中的网络侧设备或未来演进的PLMN网络中的网络设备、路边站点单元(road site unit，RSU)等。
图1为5G通信系统中的CU-DU分离的基站的架构示意图。如图1所示，5G通信系统包括下一代核心网(next generation core，5GC)和连接5GC的无线接入网(radio access network，RAN)节点。RAN节点可以为gNB或者ng-eNB。RAN节点可以通过NG-C(next generation control)接口和NG-U(next generation user)接口与5GC连接。为了便于说明，图1中仅示出了一个gNB和一个ng-eNB。
可选的，gNB和gNB之间、gNB和ng-eNB之间、或者ng-eNB和ng-eNB之间可以通过Xn接口进行连接。一个gNB或者ng-eNB可以包括一个集中式单元(central unit，CU)和一个或多个分布式单元(distributed unit，DU)。比如，如图1所示的一个gNB或者ng-eNB包括一个CU和两个DU。进一步的，一个CU可以包括一个集中式单元控制面 (CU-control plane function，CU-CP)和一个或多个集中式单元用户面(CU-user plane function，CU-UP)。其中，CU和DU之间可以通过F1接口进行连接，CU-CP和CU-UP之间可以通过E1接口进行连接，CU-CP和DU之间可以通过F1的控制面接口(F1-C)进行连接，CU-UP和DU之间可以通过F1的用户面接口(F1-U)进行连接。
如图1中所示，实线代表控制面传输，虚线代表用户面传输。CU和DU的功能切分可以按照协议栈进行切分。其中，一种可能的方式是将无线资源控制(radio resource control，RRC)以及分组数据汇聚协议(packet data convergence protocol，PDCP)层和业务数据适应(service data adaptation protocol，SDAP)层部署在CU。无线链路层控制协议(radioLink control，RLC)、媒体接入控制(media access control，MAC)、物理层(physicallayer，PHY)部署在DU。相应地，CU具有RRC、PDCP和SDAP的处理能力。DU具有RLC、MAC、和PHY的处理能力。值得注意的是，上述功能切分只是一个例子，还有可能有其他切分的方式。例如，CU包括RRC、PDCP、RLC和SDAP的处理能力，DU具有MAC、和PHY的处理能力。又例如CU包括RRC、PDCP、RLC、SDAP和部分MAC(例如加MAC包头)的处理能力，DU具有PHY和部分MAC(例如调度)的处理能力。CU、DU的名字可能会发生变化，只要能实现上述功能的接入网节点都可以看做是本申请中的CU、DU。CU-CP具有CU的控制面功能，例如，RRC的处理能力，和PDCP中的控制面处理能力。CU-UP具有CU的用户面功能，例如，SDAP的处理能力，和PDCP中的用户面处理能力。
需要说明的是，当基站的架构如图1所示时，网络设备可以是CU，CU-CP，CU-UP或者DU。终端设备通过DU连接到CU，并且通过CU连接到5GC。另外，终端设备也可以通过DU连接到CU-CP，并通过CU-CP连接到5GC的控制面；终端设备通过DU连接到CU-UP，并通过CU-UP连接到5GC的用户面。
图2为本申请实施例提供的系统架构图。请参见图2，包括网络设备201和终端设备202。网络设备201可以生成随机接入信道(random access channel,RACH)配置(也可以称为随机接入配置)，终端设备202可以根据网络设备201生成的RACH配置，通过随机接入过程接入网络设备201。终端设备202可以生成随机接入过程的信息，并向网络设备201发送该随机接入过程的信息，以使网络设备201可以根据随机接入过程的信息对RACH配置进行优化，进而提高终端设备随机接入成功的概率，提高通信效率。
在实际应用过程中，终端设备可以在多种可能的场景下发起随机接入，例如，多种可能的场景可以包括如下场景中的至少一种：(1)终端设备的状态从无线资源控制(radio resource control，RRC)空闲态切换为RRC连接态后，终端设备与网络设备建立无线链路过程时发起随机接入。(2)在终端设备与网络设备之间的无线链路失败之后，终端设备与网络设备进行RRC连接重建立时发起随机接入。(3)当终端设备需要与新小区建立上行同步时发起随机接入。(4)当终端设备为RRC连接态，且上行不同步时，若有上行或下行数据到达，则发起随机接入。(5)当终端设备处于RRC连接态，但还未在物理上行链路控制信道(physical uplink control channel，PUCCH)上为终端设备配置专用的发送调度请求的资源时发起随机接入。(6)调度请求失败时发起随机接入。(7)同步重配置时的RRC请求时发起随机接入。(8)终端设备的状态从RRC非激活态切换到RRC连接态时发起随机接入。(9)在增加第二个小区时建立时间对齐时发起随机接入。(10)请求除了主信息块(master information block，MIB)和系统信息快(system information  block，SIB)的其他系统信息时发起随机接入(11)波束失败恢复时发起随机接入。
本申请所涉及的随机接入可以包括四步随机接入(或称为四步随机接入信道，以下简称为4-step RACH)和两步随机接入(或称为两步随机接入信道，以下简称为2-step RACH)，为了便于理解，下面，分别对4-step RACH和2-step RACH的过程进行详细说明。
图3为本申请实施例提供的4-step RACH的流程示意图。4-step RACH在现有的协议TS38.300中已经详细定义，本申请只是简单进行了描述。请参见图3，该方法可以包括：
S301、终端设备向网络设备发送MSG1(或称为Msg1，或称为msg1)，用于传输随机接入前导(或称为随机接入前导，或称为随机接入前导序列，以下简称为preamble，也可以称为preamble序列)。
在本申请实施例中，preamble以及发送preamble所占用的时频资源称作为物理随机接入信道(physical random access channel，PRACH)资源。
可选的，网络设备可以广播可用的PRACH资源，终端设备可以选取一个preamble，并在相应的时频资源上发送preamble。例如，网络设备可以通过系统信息广播可用的PRACH资源。
S302、网络设备向终端设备发送MSG2(或称为Msg2，或称为msg2)。
其中，MSG2包含了网络设备确定给终端设备用于发送净荷(payload)所使用的时频资源。
S303、终端设备向网络设备发送MSG3(或称为Msg3，或称为msg3)。
其中，MSG3是随机接入过程中的第一个调度传输，发送净荷(payload)，例如，RRC连接请求消息、跟踪区域更新消息等。
需要说明的是，若不同的终端设备在S301中选择了相同的preamble并且在相同的时频资源上发送该preamble，则该不同的终端设备在相同的时频资源上发送净荷，进而导致资源使用冲突。
S304、网络设备向终端设备发送MSG4(或称为Msg4，或称为msg4)，用于指示该终端设备是否成功的接入到该网络设备。
在图3所示的4-step RACH中，终端设备和网络设备需要进行四次信令交互，信令开销大，以及通信时延较高。
图4为本申请实施例提供的2-step RACH的流程示意图。请参见图4，该方法可以包括：
S401、终端设备向网络设备发送msgA(或称为MsgA，或称为MSGA)。
其中，msgA包含有preamble以及净荷(例如，RRC连接请求消息、跟踪区域更新消息等)。
S402、网络设备向终端设备发送msgB(或称为MsgB，或称为MSGB)，用于指示该终端设备是否成功的接入到该网络设备。
在图4所示的2-step RACH中，终端设备和网络设备需要进行两次信令交互，相比于4-step RACH，减小了信令开销，并降低了通信时延。
下面，通过具体实施例，对本申请所示的技术方案进行详细说明。需要说明的是，下面几个实施例可以独立存在，也可以相互结合，对于相同或相似的内容，在不同的实施例中不再重复说明。
图5为本申请实施例提供的一种通信方法的流程示意图。请参见图5，该方法可以包括：
S501、终端设备向网络设备发送第一信息。
第一信息可以为终端设备向网络设备报告该终端设备进行随机接入时发生的随机接入失败信息。
可选的，网络设备可以为基站。
可选的，终端设备可以在成功通过2-step RACH接入网络设备之后，向网络设备发送第一信息。终端设备通过2-step RACH接入网络设备是指，终端设备通过图4实施例所示的方法接入网络设备。
可选的，第一信息可以为终端设备的两步随机接入过程的信息。
可选的，该第一信息可以为终端设备通过2-step RACH接入网络设备的失败信息。终端设备通过2-step RACH接入网络设备的过程中可能会发生失败，例如：终端设备设备在成功接入网络设备之前进行了多次的随机接入尝试。
可选的，第一信息可以包括如下信息中的至少一种：终端设备在2-step RACH中发送的preamble(或者msgA)的次数；用于指示在已发送的preamble中是否检测到至少一个preamble发生竞争的指示信息；用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
当然，第一信息还可以包括其它内容，本申请实施例对此不作具体限定。
需要说明的是，当本申请所示的RACH配置为同步信号与物理广播信道块(synchronization signal and physical broadcast channel block，SSB)对应的RACH配置时，第一信息还可以为终端设备的四步随机接入过程的信息。相应的，第一信息还可以包括终端设备在4-step RACH中发送的preamble的次数，和/或，用于指示在已发送的preamble中是否检测到至少一个preamble发生竞争的指示信息。
第五代通信系统中引入SSB的概念。具体地，SSB包括主同步信号(primary synchronization signal，PSS)、辅同步信号(secondary synchronization signal，SSS)和物理广播信道(physical broadcast channel，PBCH)，在时域上占用4个符号、在频域上占用240个子载波。在一个载波的频率范围内，可以传输多个SSB，每个SSB都对应一个物理小区标识(physical cell identifier，PCI)，并且这些SSB对应的PCI可以相同，也可以不同。其中，终端可以通过PSS获取PCI和上行同步，终端可以通过SSS获取循环前缀(cyclic prefix，CP)长度、物理小区组标识(ID)、帧同步，终端通过解码PBCH能够获得MIB，MIB中包括公共天线端口数目、系统帧号(system frame number，SFN)、下行系统带宽、物理混合自动重传指示信息(physical hybrid automatic repeat request indicator channel，PHICH)配置信息。
具体地，当一个SSB与剩余最小系统信息(remaining minimum system information，RMSI)相关联时，该SSB对应一个单独的小区，并且该小区具有唯一的NR小区全球标识(NR cell global identifier，NCGI)。此时，这种SSB称为小区定义SSB(cell defining SSB，CD-SSB)。只有CD-SSB才可以发送MIB消息和系统信息块1(system information block1，SIB1)消息，并且终端进行小区选择时只基于CD-SSB的同步信号接入。其他的SSB只能发送MIB消息，不能发送SIB1消息。
应理解，本申请中并不限制SSB为何种类型的SSB，包括上述的CD-SSB和非CD-SSB的SSB。
还应理解，SSB的基本概念在现有的协议TS38.300中已经详细定义，本申请只是简单进行了描述，上述针对SSB的描述并不能限制本申请的保护范围，只是为了增加对本申请实施例的理解。
S502、网络设备根据第一信息更新RACH配置。
可选的，RACH配置为终端设备所在小区对应的RACH配置，或者，RACH配置为终端设备进行随机接入时所使用的SSB的对应的RACH配置。
例如，网络设备可以对应多个小区，每个小区有其对应的RACH配置。相应的，在网络设备接收到终端设备发送的第一信息之后，网络设备确定终端设备所在的小区，并更新终端设备所在的小区对应的RACH配置。
例如，网络设备可以对应多个SSB，每个SSB有其对应的RACH配置。相应的，在网络设备接收到终端设备发送的第一信息之后，网络设备可以确定终端设备进行随机接入时所使用的SSB，并更新该SSB对应的RACH配置。
可选的，RACH配置包括如下至少一种：2-step RACH中preamble的PRACH配置(PRACH configuration)、2-step RACH中净荷的时频资源配置、用于指示是否可以从2-step RACH回退至4-step RACH的指示信息、4-step RACH中preamble的PRACH配置(PRACH configuration)、4-step RACH中preamble分组(RACH preamble split)、2-step RACH中preamble分组(RACH preamble split)、4-step RACH回退参数值(RACH backoff parameter value)、2-step RACH回退参数值(RACH backoff parameter value)、4-stepRACH传输功率控制参数(RACH transmission power control parameters)、2-step RACH传输功率控制参数(RACH transmission power control parameters)。
PRACH配置可以包括根序列索引、零相关区域配置、PRACH频率偏移、PRACH配置索引等。2-step RACH中preamble的PRACH配置可以用于调整2-step RACH中的preamble，和/或传输preamble所使用的时频资源。4-step RACH中preamble的PRACH配置可以用于调整4-step RACH中preamble，和/或传输preamble所使用的时频资源。
2-step RACH中净荷的时频资源配置用于调整2-step RACH中净荷所使用的时频资源。可选的，可以通过频率偏移(frequency offset)或者配置索引(configuration index)确定净荷的时频资源配置。其中，频率偏移用于指示终端设备发送preamble的第一个资源块(resource block，RB)的索引。配置索引(PRACH-configuration index)用于指示终端设备发送preamble的时频资源和前导格式。
Preamble分组(4-step RACH中preamble分组或者2-step RACH中preamble分组)可以用于调整每个preamble子集的成员。网络设备可以将调整后的每个子集的preamble集合发送给终端设备，例如，可以通过系统信息发送给终端设备。2-step RACH中的preamble分组可以用于调整2-step RACH中每个preamble子集的成员。4-step RACH中的preamble分组可以用于调整4-step RACH中每个preamble子集的成员。
RACH回退参数值(4-step RACH回退参数值或者2-step RACH回退参数值)可以包括时间窗。时间窗用于指示终端设备期望收到随机接入响应(包括2-step RACH中的msgB和4-step RACH中的MSG2)的时间段。时间窗的开始和结束由网络设备设定，并作为系统 信息的一部分进行广播。例如，若终端设备在设置的时间窗内未接收到一个随机接入响应，终端设备将重传msgA或者MSG1。在网络设备更新时间窗时，可以根据第一信息调整时间窗的长度，例如，可以将时间窗的长度调长。
RACH传输功率控制参数(4-step RACH传输功率控制参数或者2-step RACH传输功率控制参数)用于指示终端设备重传2-step RACH的msgA或者4-step RACH的MSG1时的功率爬升步进值。在随机接入过程中，终端设备每次随机接入失败后，会按照该功率爬升步进值，增加下一次发送2-step RACH中的msgA或者4-step RACH中的MSG1时的发射功率，以增大下一次随机接入成功的可能性。在网络设备更新功率爬升步进值时，可以根据第一信息调整功率爬升步进值的大小，例如，可以将功率爬升步进值的大小调大。
可选的，本申请实施例所示的PRACH配置(4-step RACH中preamble的PRACH配置，或者2-step RACH中preamble的PRACH配置)至少包括如下一种：
根序列索引(root sequence index)，小区或者SSB对应的可用的前导集合是由一个或多个根Zadoff-Chu序列(ZC序列)进行循环移位产生的，小区或者SSB使用的根序列的起始根序列的逻辑序号由根序列索引这一参数进行配置。当根序列索引这一参数的值确定后，小区所使用的根序列就确定了。当两个小区的根序列索引这一参数的值不同时，这两个小区使用的根序列不同，进而这两个小区可用的preamble就不同。例如，小区1的根序列索引这一参数的值为1，小区2的根序列索引这一参数的值为2，则小区1中用于产生preamble所使用的ZC序列为根序列索引对照表中的根序列索引这一参数的值为1的根序列索引所对应的ZC序列，小区2中用于产生preamble所使用的ZC序列为根序列索引对照表中的根序列索引这一参数的值为2的根序列索引所对应的ZC序列。
零相关区域配置(zero correlation zone configuration)，该参数用于指示PRACH前导生成时所使用的循环移位配置的索引值。当零相关区域配置的值确定后，生成preamble时所使用的循环移位就确定了，进而小区或者SSB可用的preamble就确定了。在两个小区或者SSB使用相同的根序列生成preamble时，如果使用不同的零相关区域配置，则这两个小区或者SSB可用的preamble不同。
是否为高速状态(high speed flag)，该参数用于指示确定小区是否为高速小区，或者SSB是否为高速SSB。高速小区或者SSB和非高速小区或者SSB生成preamble时所使用的根序列不同。例如，小区1或者SSB1为高速小区或者高速SSB，小区2或者SSB2为非高速小区或者非高速SSB，这两个小区或者SSB生成preamble时所使用的根序列不同，则这两个小区或者SSB可用的preamble不同。
频率偏移(PRACH-frequency offset)，该参数用于指示终端设备发送preamble的第一个资源块(resource block，RB)的索引。例如，小区1或者SSB1的频率偏移为1，小区2或者SSB2的频率偏移为2，则小区1或者SSB1中用于传输preamble的起始RB为1号RB，小区2或者SSB2中用于传输preamble的RB为2号RB。
配置索引(PRACH-configuration index)，该参数指示了终端设备发送preamble的时频资源和前导格式。例如，小区1或者SSB1的配置索引为1，小区2或者SSB2的配置索引为2，则小区1或者SSB1中用于传输preamble的时频资源为随机接入配置索引对照表中的配置索引的值为1的配置索引所对应的时频资源，小区2或者SSB2中用于传输preamble的时频资源为随机接入配置索引对照表中的配置索引的值为2的配置索引所对应 的时频资源。当两个小区或者SSB使用不同的配置索引时，这两个小区或者SSB用于传输preamble的时频资源不同。
本申请实施例提供的通信方法，在终端设备通过2-step RACH接入网络设备之后，终端设备向网络设备发送第一信息，第一信息可以为终端设备的两步随机接入过程的信息，使得网络设备可以根据第一信息优化RACH配置，提高了终端设备随机接入成功的概率，进而提高通信效率。
在图5所示实施例的基础上，可选的，网络设备包括集中式单元CU和分布式单元DU，在该种网络架构下，可以通过图6所示的实施例实现通信方法。
图6为本申请实施例提供的另一种通信方法的流程示意图。请参见图6，该方法可以包括：
S601、终端设备向CU发送第一信息。
可选的，终端设备可以在成功的通过2-step RACH接入DU之后，向CU发送第一信息。终端设备通过2-step RACH接入DU是指，终端设备通过图4实施例所示的方法接入DU。
其中，第一信息为终端设备的两步随机接入过程的信息。
可选的，第一信息可以包括如下信息中的至少一种：终端设备在2-step RACH中发送的preamble的次数；用于指示在已发送的preamble中是否检测到至少一个preamble发生竞争的指示信息；用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
当然，第一信息还可以包括其它内容，本申请实施例对此不作具体限定。
可选的，终端设备向CU发送第一信息时，第一信息可以经过DU的转发。例如，终端设备向DU发送第一信息，DU通过F1接口向CU转发第一信息。
S602、CU根据第一信息更新RACH配置。
CU更新的RACH配置为终端设备当前使用的RACH配置。
DU中预先存储有该DU支持的小区或者SSB的RACH配置。
可选的，可以在CU中预先存储有RACH配置，该RACH配置为该CU所连接的一个或多个DU支持的小区或者SSB的RACH配置。
可选的，在S602之前，CU接收DU发送的RACH配置，该RACH配置为该DU支持的小区或者SSB的RACH配置。
可选的，RACH配置为终端设备所在的小区对应的RACH配置，或者，RACH配置为终端设备进行随机接入时所使用的SSB对应的RACH配置。
可选的，RACH配置包括如下至少一种：2-step RACH中preamble的PRACH配置、2-step RACH中净荷的时频资源配置、用于指示是否可以从2-step RACH回退至4-step RACH的指示信息、4-step RACH中preamble的PRACH配置、4-step RACH preamble分组、2-step RACH中preamble分组、4-step RACH回退参数值、2-step RACH回退参数值、4-step RACH传输功率控制参数、2-step RACH传输功率控制参数。需要说明的是，该RACH配置中包括的参数的描述可以参见S502，此处不再进行赘述。
S603、CU向DU发送更新后的RACH配置。
例如，CU可以通过F1接口向DU发送更新后的RACH配置。
S604、DU将RACH配置更新为从CU接收到的更新后的RACH配置。
在图6所示的实施例中，在终端设备通过2-step RACH接入CU之后，终端设备向CU发送第一信息，第一信息可以为终端设备的两步随机接入过程的信息，使得CU可以根据第一信息优化RACH配置，提高了终端设备随机接入成功的概率，进而提高通信效率。
在图6所示实施例的基础上，可选的，在CU划分为CU-CP和CU-UP的架构下，CU-CP作为控制面网元，可以对RACH配置进行优化。在该种架构下，可以通过图6所示的实施例实现通信方法，其中，CU替换成CU-CP。
图7为本申请实施例提供的另一种通信方法的流程示意图。请参见图7，该方法可以包括：
S701、终端设备向CU发送第一信息。
可选的，终端设备可以在成功的通过4-step RACH接入DU之后，向CU发送第一信息。终端设备通过4-step RACH接入DU是指，终端设备通过图3实施例所示的方法接入DU。
其中，第一信息为终端设备的四步随机接入过程的信息。
可选的，第一信息可以包括如下信息中的至少一种：终端设备在4-step RACH中发送的preamble的次数；用于指示在已发送的preamble中是否检测到至少一个preamble发生竞争的指示信息。
当然，第一信息还可以包括其它内容，本申请实施例对此不作具体限定。
可选的，终端设备向CU发送第一信息的过程中，第一信息可以经过DU的转发。例如，终端设备向DU发送第一信息，DU通过F1接口向CU转发第一信息。
S702、CU根据第一信息更新RACH配置。
CU更新的RACH配置可以为终端设备当前使用的RACH配置。
DU中预先存储有该DU支持的小区或者SSB的RACH配置。
可选的，可以在CU中预先存储有RACH配置，该RACH配置为该CU所连接的一个或多个DU支持的小区或者SSB的RACH配置。
可选的，在S702之前，CU接收DU发送的RACH配置，该RACH配置为该DU支持的小区或者SSB的RACH配置。
可选的，RACH配置为终端设备所在的小区对应的RACH配置，或者，RACH配置为终端设备进行随机接入时所使用的SSB对应的RACH配置。
可选的，RACH配置包括如下至少一种：4-step RACH中preamble的PRACH配置、4-step RACH preamble分组、4-step RACH回退参数值、4-step RACH传输功率控制参数。
需要说明的是，关于4-step RACH中preamble的PRACH配置、4-step RACH preamble分组、4-step RACH回退参数值、4-step RACH传输功率控制参数的描述，可以参见S502，此处不再进行赘述。
S703、CU向DU发送更新后的RACH配置。
例如，CU可以通过F1接口向DU发送更新后的RACH配置。
S704、DU将RACH配置更新为从CU接收到的更新后的RACH配置。
在图7所示的实施例中，在终端设备通过4-step RACH接入DU之后，终端设备向CU发送第一信息，第一信息可以为终端设备的四步随机接入过程的信息，使得CU可以根据第一信息优化RACH配置，提高了终端设备随机接入成功的概率，进而提高通信效率。
在图7所示实施例的基础上，可选的，在CU划分为CU-CP和CU-UP的架构下，CU-CP作为控制面网元，负责对RACH配置进行优化。在该种架构下，可以通过图7所示的实施例实现通信方法，其中，CU替换成CU-CP。
图8为本申请实施例提供的另一种通信方法的流程示意图。请参见图8，该方法可以包括：
S801、第一网络设备获取随机接入配置。
其中，随机接入配置包括PRACH配置和/或时频资源配置。
在第一网络设备为gNB或ng-eNB的情况下，随机接入配置包括如下至少一种：两步随机接入的随机接入配置、四步随机接入的同步信号与物理广播信道块SSB对应的随机接入配置。第一网络设备获取的PRACH配置和/或时频资源配置用于指示终端设备在随机接入过程中接入第一网络设备所使用的随机接入资源的配置。所述的PRACH配置包括如下至少一种：2-step RACH中小区对应的preamble的PRACH配置、2-step RACH中SSB对应的preamble的PRACH配置、4-step RACH中SSB对应的preamble的PRACH配置。所述的时频资源配置包括如下至少一种：2-step RACH中小区对应的净荷的时频资源配置、2-step RACH中SSB对应的净荷的时频资源配置。
在第一网络设备为CU的情况下，随机接入配置包括如下至少一种：两步随机接入的随机接入配置、四步随机接入的随机接入配置。第一网络设备获取的PRACH配置和/或时频资源配置用于指示终端设备在随机接入过程中接入该CU所连接的DU所使用的随机接入资源的配置。所述的PRACH配置包括如下至少一种：2-step RACH中小区对应的preamble的PRACH配置、2-step RACH中SSB对应的preamble的PRACH配置、4-step RACH中小区对应的preamble的PRACH配置、4-step RACH中对应的preamble的PRACH配置。所述的时频资源配置包括如下至少一种：2-step RACH中小区对应的净荷的时频资源配置、2-step RACH中SSB对应的净荷的时频资源配置。
在第一网络设备为CU-CP的情况下，随机接入配置包括如下至少一种：两步随机接入的随机接入配置、四步随机接入的随机接入配置。第一网络设备获取的PRACH配置和/或时频资源配置用于指示终端设备在随机接入过程中接入该CU-CP所连接的DU所使用的随机接入资源的配置。所述的PRACH配置包括如下至少一种：2-step RACH中小区对应的preamble的PRACH配置、2-step RACH中SSB对应的preamble的PRACH配置、4-step RACH中小区对应的preamble的PRACH配置、4-step RACH中SSB对应的preamble的PRACH配置。所述的时频资源配置包括如下至少一种：2-step RACH中小区对应的净荷的时频资源配置、2-step RACH中SSB对应的净荷的时频资源配置。
需要说明的是，PRACH配置和时频资源配置的描述可以参见S502，此处不再进行赘述。
S802、第一网络设备向第二网络设备发送随机接入配置。
可选的，第一网络设备可以向第二网络设备发送第一消息，第一消息包括PRACH配置和/或时频资源配置。
第一消息可以为接口建立请求消息。例如，在LTE系统中，接口建立请求消息可以为X2建立请求消息(X2 setup request)。在5G系统中，接口建立请求消息可以为Xn建立请求消息(Xn setup request)。在CU-DU分离的基站架构中，接口建立请求消息可以为F1建立请求消息(F1 setup request)。
第一消息可以为接口建立响应消息。例如，在LTE系统中，接口建立请求消息可以为X2建立响应消息(X2 setup response)。在5G系统中，接口建立请求消息可以为Xn建立响应消息(Xn setup response)。在CU-DU分离的基站架构中，接口建立响应消息可以为F1建立响应消息(F1 setup response)。
第一消息可以为节点配置更新消息。例如，在5G系统中，节点配置更新消息可以为下一代无线接入网(next generation radio access network，NG-RAN)节点配置更新消息(NG-RAN node configuration update。在CU-DU分离的基站架构中，节点配置更新消息可以为集中式单元配置更新消息(gNB-CU configuration update)。
第一消息可以为节点配置更新确认消息。例如，在5G系统中，节点配置更新确认消息可以为下一代无线接入网节点配置更新确认消息(NG-RAN node configuration update acknowledge)。在CU-DU分离的基站架构中，节点配置更新确认消息可以为分布式单元配置更新确认消息(gNB-DU configuration update acknowledge)。
需要说明的是，在第一消息为节点配置更新消息或者节点配置更新确认消息时，在第一网络设备的PRACH配置和/或时频资源配置发生更新后，第一网络设备才向第二网络设备发送配置更新消息或者节点配置更新确认消息，且配置更新消息或者节点配置更新确认消息中携带第一网络设备的PRACH配置和/或时频资源配置。配置更新消息或者节点配置更新确认消息中的PRACH配置和/或时频资源配置可以为第一网络设备的、更新后的完整的PRACH配置和/或时频资源配置，或者，配置更新消息或者节点配置更新确认消息中的PRACH配置和/或时频资源配置可以第一网络设备的、发生更新的PRACH配置和/或时频资源配置。
可选的，在第二网络设备接收到第一网络设备的PRACH配置和/或时频资源配置之后，可以对第二网络设备的PRACH配置和/或时频资源配置进行更新，或者，确定第二网络设备的PRACH配置和/或时频资源配置。
在第二网络设备为gNB或ng-eNB的情况下，第二网络设备的PRACH配置和/或时频资源配置用于指示终端设备在随机接入过程中接入第二网络设备所使用的随机接入资源的配置。所述的PRACH配置包括如下至少一种：2-step RACH中小区对应的preamble的PRACH配置、2-step RACH中SSB对应的preamble的PRACH配置、4-step RACH中SSB对应的preamble的PRACH配置。所述的时频资源配置包括如下至少一种：2-step RACH中小区对应的净荷的时频资源配置、2-step RACH中SSB对应的净荷的时频资源配置。
在第二网络设备为CU的情况下，第二网络设备的PRACH配置和/或时频资源配置用于指示终端设备在随机接入过程中接入该CU所连接的DU所使用的随机接入资源的配置。所述的PRACH配置包括如下至少一种：2-step RACH中小区对应的preamble的PRACH配置、2-step RACH中SSB对应的preamble的PRACH配置、4-step RACH中小区对应的preamble的PRACH配置、4-step RACH中SSB对应的preamble的PRACH配置。所述的时频资源配置包括如下至少一种：2-step RACH中小区对应的净荷的时频资源配置、2-step RACH中SSB对应的净荷的时频资源配置。
在第二网络设备为CU-CP的情况下，第二网络设备获取的PRACH配置和/或时频资源配置用于指示终端设备在随机接入过程中接入该CU-CP所连接的DU所使用的随机接入资源的配置。所述的PRACH配置包括如下至少一种：2-step RACH中小区对应的preamble的 PRACH配置、2-step RACH中SSB对应的preamble的PRACH配置、4-step RACH中小区对应的preamble的PRACH配置、4-step RACH中SSB对应的preamble的PRACH配置。所述的时频资源配置包括如下至少一种：2-step RACH中小区对应的净荷的时频资源配置、2-step RACH中SSB对应的净荷的时频资源配置。
在第二网络设备为DU的情况下，第二网络设备的PRACH配置和/或时频资源配置用于指示终端设备在随机接入过程中接入该DU所使用的随机接入资源的配置。所述的PRACH配置包括如下至少一种：2-step RACH中小区对应的preamble的PRACH配置、2-step RACH中SSB对应的preamble的PRACH配置、4-step RACH中小区对应的preamble的PRACH配置、4-step RACH中SSB对应的preamble的PRACH配置。所述的时频资源配置包括如下至少一种：2-step RACH中小区对应的净荷的时频资源配置、2-step RACH中SSB对应的净荷的时频资源配置。
可选的，在第二网络设备接收到第一网络设备的PRACH配置和/或时频资源配置之后，第二网络设备可以向第一网络设备发送第二网络设备的PRACH配置和/或时频资源配置，或者，第二网络设备先根据接收到的第一网络设备的PRACH配置和/或时频资源配置更新第二网络设备的PRACH配置和/或时频资源配置，再向第一网络设备发送更新后的第二网络设备的PRACH配置和/或时频资源配置。
在图8所示的实施例中，第一网络设备获取PRACH配置和/或时频资源配置之后，向第二网络设备发送PRACH配置和/或时频资源配置，这样，第二网络设备可以根据第一网络设备的PRACH配置和/或时频资源配置，对第二网络设备的PRACH配置和/或时频资源配置进行更新，以减少第一网络设备的PRACH配置和/或时频资源配置与第二网络设备的PRACH配置和/或时频资源配置冲突的可能性，进而减少终端设备根据PRACH配置和/或时频资源配置进行随机接入时发生冲突的可能性，提高了终端设备随机接入成功的概率，进而提高通信效率。
图9为本申请实施例提供的另一种通信方法的流程示意图。请参见图9，该方法可以包括：
S901、第一网络设备向第二网络设备发送切换请求。
需要说明的是，图9所示的实施例可以应用于切换场景。
在第一网络设备和第二网络设备为gNB或ng-eNB的情况下，第一网络设备为终端设备切换之前所接入的gNB或ng-eNB，第二网络设备为终端设备切换之后所接入的gNB或ng-eNB。其中，第一网络设备可以向第二网络设备发送切换请求(handover request)消息，该消息中携带终端设备的标识。
在第一网络设备和第二网络设备为CU的情况下，第一网络设备为终端设备切换之前所接入的CU，第二网络设备为终端设备切换之后所接入的CU。其中，第一网络设备可以向第二网络设备发送切换请求(handover request)消息，该消息中携带终端设备的标识。
在第一网络设备和第二网络设备为CU-CP的情况下，第一网络设备为终端设备切换之前所接入的CU-CP，第二网络设备为终端设备切换之后所接入的CU-CP。其中，第一网络设备可以向第二网络设备发送切换请求(handover request)消息，该消息中携带终端设备的标识。
在第一网络设备为CU、第二网络设备为该CU所连接的DU的情况下，第一网络设备可 以向第二网络设备发送终端设备上下文建立请求消息(UE context setup request)，该消息中携带终端设备的标识。
在第一网络设备为CU-CP、第二网络设备为该CU-CP所连接的DU的情况下，第一网络设备可以向第二网络设备发送终端设备上下文建立请求消息(UE context setup request)，该消息中携带终端设备的标识。
S902、第二网络设备为终端设备确定RACH配置。
在第二网络设备为gNB或ng-eNB的情况下，第二网络设备为终端设备确定的RACH配置用于指示终端设备在接入第二网络设备的随机接入过程中所使用的随机接入资源的配置，并且该RACH配置是由第二网络设备确定的。
在第二网络设备为CU的情况下，第二网络设备为终端设备确定的RACH配置用于指示终端设备在随机接入过程中接入该CU所连接的DU所使用的随机接入资源的配置，并且该随机接入配置是由该DU确定的。
在第二网络设备为CU-CP的情况下，第二网络设备为终端设备确定的RACH配置用于指示终端设备在随机接入过程中接入该CU-CP所连接的DU所使用的随机接入资源的配置，并且该随机接入配置是由该DU确定的。
在第二网络设备为DU的情况下，第二网络设备为终端设备确定的RACH配置用于指示终端设备在随机接入过程中接入该DU所使用的随机接入资源的配置，并且该随机接入配置是由该DU确定的。
RACH配置至少包括如下一种：2-step RACH中的preamble索引值和物理随机接入信道PRACH掩码索引值、4-step RACH中preamble索引值和物理随机接入信道PRACH掩码索引值。其中，preamble索引值用于指示终端设备在随机接入过程中使用的preamble；PRACH掩码索引值用于指示终端设备在2-step RACH中传输preamble的时频资源、在2-step RACH中传输净荷的时频资源、或者在4-step RACH中传输preamble的时频资源。
S903、第二网络设备向第一网络设备发送随机接入配置。
在第一网络设备和第二网络设备为gNB或ng-eNB的情况下，第二网络设备可以向第一网络设备发送切换请求确认(handover request acknowledge)消息，并在切换请求确认消息中携带RACH配置。
在第一网络设备和第二网络设备为CU的情况下，第二网络设备可以向第一网络设备发送切换请求确认(handover request acknowledge)消息，并在切换请求确认消息中携带RACH配置。
在第一网络设备和第二网络设备为CU-CP的情况下，第二网络设备可以向第一网络设备发送切换请求确认(handover request acknowledge)消息，并在切换请求确认消息中携带RACH配置。
在第一网络设备为CU、第二网络设备为该CU所连接的DU的情况下，第二网络设备可以向第一网络设备发送终端设备上下文建立响应消息(UE context setup response)，并在终端设备上下文建立响应消息中携带RACH配置。
在第一网络设备为CU-CP、第二网络设备为该CU-CP所连接的DU的情况下，第二网络设备可以向第一网络设备发送终端设备上下文建立响应消息(UE context setup response)，并在终端设备上下文建立响应消息中携带RACH配置。
S904、第一网络设备向终端设备发送RACH配置。
其中，第一网络设备可以向终端设备发送RRC重配置(RRC reconfiguration)消息，并在RRC重配置消息中携带RACH配置。
S905、终端设备根据随机接入配置接入第二网络设备。
在第二网络设备为gNB或ng-eNB的情况下，终端设备根据RACH配置接入第二网络设备是指：终端设备使用第二网络设备为该终端设备确定的随机接入资源，接入第二网络设备。
在第二网络设备为CU的情况下，终端设备根据RACH配置接入第二网络设备是指：终端设备使用和该CU所连接的DU为该终端设备确定的随机接入资源，接入到该DU。
在第二网络设备为CU-CP的情况下，终端设备根据RACH配置接入第二网络设备是指：终端设备使用和该CU-CP所连接的DU为该终端设备确定的随机接入资源，接入到该DU。
在第二网络设备为DU的情况下，终端设备根据RACH配置接入第二网络设备是指：终端设备使用该DU为该终端设备确定的随机接入资源，接入到该DU。
可选的，终端设备根据RACH配置执行随机接入过程，以实现接入第二网络设备。
在图9所示的实施例中，在终端设备从第一网络设备切换至第二网络设备的过程中，第二网络设备为终端设备确定专用的RACH配置，以使终端设备可以根据该专用的RACH配置接入第二网络设备，由于该RACH配置为该终端设备专用的，因此，避免了终端设备在切换的过程中与其它终端设备发生冲突，提高了终端设备在切换过程中随机接入成功的概率，进而提高通信效率。
图10为本申请实施例提供的一种通信装置的结构示意图。该通信装置10可以应用于网络设备。请参见图10，该通信装置10可以包括接收模块11和处理模块12，其中，
所述接收模块11用于，接收终端设备发送的第一信息，所述第一信息为所述终端设备的两步随机接入过程的信息；
所述处理模块12用于，根据所述第一信息更新随机接入配置。
可选的，接收模块11可以执行图5实施例中的S501，以及图6实施例中的S601。
可选的，处理模块12可以执行图5实施例中的S502，以及图6实施例中的S602。
本申请实施例提供的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此次不再进行赘述。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在两步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息；
用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的随机接入配置，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的随机接入配置。
图11为本申请实施例提供的另一种通信装置的结构示意图。在图10所示实施例的基 础上，请参见图11，所述装置还包括发送模块13，其中，
所述发送模块13用于，向所述DU发送更新后的所述随机接入配置；网络设备包括集中式单元CU和分布式单元DU，所述CU和所述DU相连。
在一种可能的实施方式中，所述接收模块11还用于，在所述处理模块12根据所述第一信息更新所述随机接入配置之前接收所述DU发送的所述随机接入配置。
在一种可能的实施方式中，所述网络设备包括CU和DU，所述CU包括集中式单元控制面CU-CP和集中式单元用户面CU-UP；
发送模块13还用于，向所述DU发送更新后的所述随机接入配置。
在一种可能的实施方式中，所述接收模块11还用于，在所述处理模块根据所述第一信息更新所述随机接入配置之前接收所述DU发送的所述随机接入配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置、用于指示是否可以从两步随机接入回退至四步随机接入的指示信息、四步随机接入中随机接入前导的PRACH配置、两步随机接入中随机接入前导分组、四步随机接入中随机接入前导分组、两步随机接入中随机接入回退参数、四步随机接入中随机接入回退参数、两步随机接入中随机接入传输功率控制参数、四步随机接入中随机接入传输功率控制参数。
本申请实施例提供的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此次不再进行赘述。
图12为本申请实施例提供的又一种通信装置的结构示意图。该通信装置20可以应用于网络设备。请参见图12，该通信装置20包括接收器21、处理器22和存储器23，所述存储器23中存储有程序指令，所述处理器22执行所述存储器23中的程序指令，示例性的，接收器21、处理器22和存储器23可以通过通信总线24通信，其中，
所述接收器21用于，接收终端设备发送的第一信息，所述第一信息为所述终端设备的两步随机接入过程的信息；
所述处理器22用于，根据所述第一信息更新随机接入配置。
可选的，接收器21可以具有图10实施例所示的接收模块11的功能。处理器22可以具有图10实施例所示的处理模块12的功能。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在两步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息；
用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的随机接入配置，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的随机接入配置。
图13为本申请实施例提供的另一种通信装置的结构示意图。在图12实施例的基础上，请参见图13，通信装置20还可以包括发送器25，其中，
所述发送器25用于，向所述DU发送更新后的所述随机接入配置；网络设备包括集中式单元CU和分布式单元DU，所述CU和所述DU相连；
在一种可能的实施方式中，所述接收器21还用于，在所述处理器22根据所述第一信息更新所述随机接入配置之前接收所述DU发送的所述随机接入配置。
在一种可能的实施方式中，所述网络设备包括CU和DU，所述CU包括集中式单元控制面CU-CP和集中式单元用户面CU-UP；
发送器25还用于，向所述DU发送更新后的所述随机接入配置。
在一种可能的实施方式中，所述接收器21还用于，在所述处理器根据所述第一信息更新所述随机接入配置之前接收所述DU发送的所述随机接入配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置、用于指示是否可以从两步随机接入回退至四步随机接入的指示信息、四步随机接入中随机接入前导的PRACH配置、两步随机接入中随机接入前导分组、四步随机接入中随机接入前导分组、两步随机接入中随机接入回退参数、四步随机接入中随机接入回退参数、两步随机接入中随机接入传输功率控制参数、四步随机接入中随机接入传输功率控制参数。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图14为本申请实施例提供的又一种通信装置的结构示意图。该通信装置30可以应用于终端设备。请参见图14，该通信装置30包括处理模块31和发送模块32，其中，
所述处理模块31用于，获取第一信息，所述第一信息为所述终端设备的两步随机接入过程的信息；
所述发送模块32用于，向网络设备发送所述第一信息。
可选的，发送模块32可以执行图5实施例中的S501，以及图6实施例中的S601。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在两步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息；
用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的随机接入配置，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的随机接入配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配 置、用于指示是否可以从两步随机接入回退至四步随机接入的指示信息、四步随机接入中随机接入前导的PRACH配置、两步随机接入中随机接入前导分组、四步随机接入中随机接入前导分组、两步随机接入中随机接入回退参数、四步随机接入中随机接入回退参数、两步随机接入中随机接入传输功率控制参数、四步随机接入中随机接入传输功率控制参数。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图15为本申请实施例提供的另一种通信装置的结构示意图。该通信装置40可以应用于终端设备。请参见图15，该通信装置40包括处理器41、发送器42和存储器43，所述存储器43中存储有程序指令，所述处理器41执行所述存储器43中的程序指令，示例性的，处理器41、发送器42和存储器43可以通过通信总线44通信，其中，
所述处理器41用于，获取第一信息，所述第一信息为所述终端设备的两步随机接入过程的信息；
所述发送器42用于，向网络设备发送所述第一信息。
可选的，处理器41可以具有图14实施例所示的处理模块31的功能。发送器42可以具有图14实施例所示的发送模块42的功能。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在两步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息；
用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的随机接入配置，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的随机接入配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置、用于指示是否可以从两步随机接入回退至四步随机接入的指示信息、四步随机接入中随机接入前导的PRACH配置、两步随机接入中随机接入前导分组、四步随机接入中随机接入前导分组、两步随机接入中随机接入回退参数、四步随机接入中随机接入回退参数、两步随机接入中随机接入传输功率控制参数、四步随机接入中随机接入传输功率控制参数。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图16为本申请实施例提供的再一种通信装置的结构示意图。该通信装置50可以应用于集中式单元CU。请参见图16，该通信装置50包括接收模块51、处理模块52和发送模块53，其中，
所述接收模块51用于，接收终端设备发送的第一信息，所述第一信息为所述终端设 备的四步随机接入过程的信息；
所述处理模块52用于，根据所述第一信息更新随机接入配置；
所述发送模块53用于，向所述分布式单元DU发送更新后的所述随机接入配置。
可选的，接收模块51可以执行图7实施例中的S701。
可选的，处理模块52可以执行图7实施例中的S702。
可选的，发送模块53可以执行图7实施例中的S703。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方式中，所述接收模块51还用于，在所述处理模块52根据所述第一信息更新随机接入配置之前，接收所述DU发送的所述随机接入配置。
在一种可能的实施方式中，所述CU包括集中式单元控制面CU-CP和集中式单元用户面CU-UP，所述通信装置应用于所述CU-CP。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在四步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的配置信息，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：四步随机接入中随机接入前导的PRACH配置、四步随机接入中随机接入前导分组、四步随机接入中随机接入回退参数、四步随机接入中随机接入传输功率控制参数。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图17为本申请实施例提供另一种通信装置的结构示意图。该通信装置60可以应用于集中式单元CU。请参见图17，该通信装置60包括接收器61、处理器62、发送器63和存储器64，所述存储器64中存储有程序指令，所述处理器62执行所述存储器64中的程序指令，示例性的，处理器41、发送器42和存储器43可以通过通信总线65通信，其中，
所述接收器61用于，接收终端设备发送的第一信息，所述第一信息为所述终端设备的四步随机接入过程的信息；
所述处理器62用于，根据所述第一信息更新随机接入配置；
所述发送器63用于，向所述分布式单元DU发送更新后的所述随机接入配置。
可选的，接收器61可以具有图16实施例所示的接收模块51的功能。处理器62可以具有图16实施例所示的处理模块62的功能。发送器62可以具有图16实施例所示的发送模块63的功能。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方式中，所述接收器61还用于，在所述处理器62根据所述第一信 息更新随机接入配置之前，接收所述DU发送的所述随机接入配置。
在一种可能的实施方式中，所述CU包括集中式单元控制面CU-CP和集中式单元用户面CU-UP，所述通信装置应用于所述CU-CP。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在四步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的配置信息，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：四步随机接入中随机接入前导的PRACH配置、四步随机接入中随机接入前导分组、四步随机接入中随机接入回退参数、四步随机接入中随机接入传输功率控制参数。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图18为本申请实施例提供的又一种通信装置的结构示意图。该通信装置70可以应用于终端设备。请参见图18，该通信装置70包括处理模块71和发送模块72，其中，
所述处理模块71用于，获取第一信息，所述第一信息为所述终端设备的四步随机接入过程的信息；
所述发送模块72用于，向集中式单元CU发送所述第一信息，所述第一信息用于使得所述CU更新随机接入配置。
可选的，发送模块72可以执行图7实施例中的S701。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在四步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的配置信息，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：四步随机接入中随机接入前导的PRACH配置、四步随机接入中随机接入前导分组、四步随机接入中随机接入回退参数、四步随机接入中随机接入传输功率控制参数。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图19为本申请实施例提供的再一种通信装置的结构示意图。该通信装置80可以应用 于终端设备。请参见图19，该通信装置80包括处理器81、发送器82和存储器83，所述存储器83中存储有程序指令，所述处理器81执行所述存储器83中的程序指令，处理器81、发送器82和存储器83可以通过通信总线84通信，其中，
所述处理器81用于，获取第一信息，所述第一信息为所述终端设备的四步随机接入过程的信息；
所述发送器82用于，向集中式单元CU发送所述第一信息，所述第一信息用于使得所述CU更新随机接入配置。
可选的，处理器81具有图18实施例中的处理模块71的功能。发送器82具有图18实施例中的发送模块72的功能。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方式中，所述第一信息包括如下信息中的至少一种：
所述终端设备在四步随机接入过程中发送的随机接入前导的次数；
用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息。
在一种可能的实施方式中，所述随机接入配置为所述终端设备所在的小区对应的配置信息，或者，
所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的配置。
在一种可能的实施方式中，所述随机接入配置包括如下信息中的至少一种：四步随机接入中随机接入前导的PRACH配置、四步随机接入中随机接入前导分组、四步随机接入中随机接入回退参数、四步随机接入中随机接入传输功率控制参数。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图20为本申请实施例提供的另一种通信装置的结构示意图。该通信装置90可以应用于网络设备。请参见图20，该通信装置90包括处理模块91和发送模块92，其中，
所述处理模块91用于，获取随机接入配置，所述随机接入配置包括如下至少一种：两步随机接入的随机接入配置、四步随机接入的同步信号与物理广播信道块SSB对应的随机接入配置；
所述发送模块92用于，向第二网络设备发送所述随机接入配置。
可选的，处理模块91可以执行图8实施例中的S801。
可选的，发送模块92可以执行图8实施例中的S802。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方式中，所述两步随机接入的随机接入配置包括如下至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置。
在一种可能的实施方式中，所述PRACH配置为小区对应的PRACH配置或者SSB对应的PRACH配置。
在一种可能的实施方式中，所述四步随机接入的SSB对应的随机接入配置包括：四步随机接入的每个SSB对应的随机接入前导的PRACH配置。
在一种可能的实施方式中，所述发送模块92具体用于：
向所述第二网络设备发送第一消息，所述第一消息包括所述随机接入配置。
在一种可能的实施方式中，所述第一消息为Xn接口建立请求消息或X2接口建立请求消息或F1建立请求消息；或者，
所述第一消息为Xn建立响应消息或X2建立响应消息或F1建立响应消息；或者，
所述第一消息为下一代无线接入网节点配置更新消息或者集中式单元配置更新消息；或者，
所述第一消息为下一代无线接入网节点配置更新确认消息或者分布式单元配置更新确认消息。
所述第一消息为节点配置更新确认消息。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的集中式单元控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第五CU连接的DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU连接的DU。
在一种可能的实施方式中，所述随机接入配置还包括四步随机接入的小区对应的随机接入配置。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图21为本申请实施例提供再一种通信装置的结构示意图。在通信装置100可以应用于网络设备。请参见图21，通信装置100包括处理器1001、发送器1002和存储器1003，所述存储器1003中存储有程序指令，所述处理器1001执行所述存储器1003中的程序指令，处理器1001、发送器1002和存储器1003可以通过通信总线1004通信，其中，
所述处理器1001用于，获取随机接入配置，所述随机接入配置包括如下至少一种：两步随机接入的随机接入配置、四步随机接入的同步信号与物理广播信道块SSB对应的随机接入配置；
所述发送器1002用于，向第二网络设备发送所述随机接入配置。
可选的，处理器1001可以具有图20实施例中处理模块901的功能。发送器1002可以具有图20实施例中发送模块902的功能。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方式中，所述两步随机接入的随机接入配置包括如下至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置。
在一种可能的实施方式中，所述PRACH配置为小区对应的PRACH配置或者SSB对应的PRACH配置。
在一种可能的实施方式中，所述四步随机接入的SSB对应的随机接入配置包括：四步随机接入的每个SSB对应的随机接入前导的PRACH配置。
在一种可能的实施方式中，所述发送器1002具体用于：
向所述第二网络设备发送第一消息，所述第一消息包括所述随机接入配置。
在一种可能的实施方式中，所述第一消息为Xn建立请求消息或X2建立请求消息或F1建立请求消息；或者，
所述第一消息为Xn建立响应消息或X2建立响应消息或F1建立响应消息；或者，
所述第一消息为下一代无线接入网节点配置更新消息或者集中式单元配置更新消息；或者，
所述第一消息为下一代无线接入网节点配置更新确认消息或者分布式单元配置更新确认消息。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的集中式单元控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第五CU连接的DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU连接的DU。
在一种可能的实施方式中，所述随机接入配置还包括四步随机接入的小区对应的随机接入配置。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图22为本申请实施例提供的又一种通信装置的结构示意图。该通信装置200可以应用于网络设备。请参见图22，该通信装置200包括处理模块2001和发送模块2002，其中，
所述处理模块2001用于，获取终端设备对应的随机接入配置，所述随机接入配置为第二网络设备为所述终端设备确定的，所述随机接入配置包括如下至少一种：两步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值、四步随机接入中随机接入前导索引值和物理随机接入信道PRACH掩码索引值；
所述发送模块2002用于，向终端设备发送所述随机接入配置，所述随机接入配置用于使得所述终端设备根据所述随机接入配置接入所述第二网络设备。
可选的，处理模块2001可以执行图9实施例中的S903。
可选的，发送模块2002可以执行图9实施例中的S901和S904。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的集中式单元控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
图23为本申请实施例提供的再一种通信装置的结构示意图。在图22所示实施例的基础上，请参见图23，通信装置200还包括接收模块2003，其中，
所述接收模块2003用于，接收所述第二网络设备发送的切换请求确认消息，所述切换请求确认消息包括所述随机接入配置。
在一种可能的实施方式中，所述发送模块2002还用于，在所述接收模块2003接收所述第二网络设备发送的切换请求确认消息之前向所述第二网络设备发送切换请求消息，所述切换请求消息包括所述终端设备的标识。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第五CU连接的第一DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU中的CU-CP连接的第二DU。
在一种可能的实施方式中，所述第一网络设备获取终端设备对应的随机接入配置，包括：
所述第一网络设备接收所述第二网络设备发送的终端设备上下文建立响应消息，所述终端设备上下文建立响应消息包括所述随机接入配置。
在一种可能的实施方式中，所述第一网络设备接收所述第二网络设备发送的终端设备上下文建立响应消息之前，还包括：
所述第一网络设备向所述第二网络设备发送终端设备上下文建立请求消息，所述终端设备上下文建立请求消息包括所述终端设备的标识。
在一种可能的实施方式中，所述发送模块2002具体用于：向所述终端设备发送RRC重配置消息，所述RRC重配置消息包括所述随机接入配置。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图24为本申请实施例提供的另一种通信装置的结构示意图。该通信装置300可以应用于网络设备。请参见图24，通信装置300包括处理器3001、发送器3002和存储器3003，所述存储器3003中存储有程序指令，所述处理器3001执行所述存储器3003中的程序指令，处理器3001、发送器3002和存储器3003可以通过通信总线3004通信，其中，
所述处理器3001用于，获取终端设备对应的随机接入配置，所述随机接入配置为第二网络设备为所述终端设备确定的，所述随机接入配置包括如下至少一种：两步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值、四步随机接入中随机接入前导索引值和物理随机接入信道PRACH掩码索引值；
所述发送器3002用于，向终端设备发送所述随机接入配置，所述随机接入配置用于使得所述终端设备根据所述随机接入配置接入所述第二网络设备。
可选的，处理器3001可以具有图22实施例中处理模块2001的功能。发送器3002可以具有图22实施例中的发送模块2002的功能。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的集中式单元控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
图25为本申请实施例提供的再一种通信装置的结构示意图。在图24所示实施例的基础上，请参见图25，通信装置300还包括接收器3005，其中，
所述接收器3005用于，接收所述第二网络设备发送的切换请求确认消息，所述切换请求确认消息包括所述随机接入配置。
在一种可能的实施方式中，所述发送模块3002还用于，在所述接收模块3005接收所述第二网络设备发送的切换请求确认消息之前向所述第二网络设备发送切换请求消息，所述切换请求消息包括所述终端设备的标识。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第五CU连接的第一DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU中的CU-CP连接的第二DU。
在一种可能的实施方式中，所述第一网络设备获取终端设备对应的随机接入配置，包括：
所述第一网络设备接收所述第二网络设备发送的终端设备上下文建立响应消息，所述终端设备上下文建立响应消息包括所述随机接入配置。
在一种可能的实施方式中，所述第一网络设备接收所述第二网络设备发送的终端设备上下文建立响应消息之前，还包括：
所述第一网络设备向所述第二网络设备发送终端设备上下文建立请求消息，所述终端设备上下文建立请求消息包括所述终端设备的标识。
在一种可能的实施方式中，所述发送模块3002具体用于：向所述终端设备发送RRC重配置消息，所述RRC重配置消息包括所述随机接入配置。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图26为本申请实施例提供的另一种通信装置的结构示意图。该通信装置400应用于终端设备。请参见图26，通信装置400包括处理模块4001和接收模块4002，其中，
所述接收模块4001用于，接收第一网络设备发送的随机接入配置，所述随机接入配置为第二网络设备为所述终端设备分配的，所述随机接入配置包括如下至少一种：两步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值、四步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值；
所述处理模块4002用于，根据所述随机接入配置接入第二网络设备。
可选的，接收模块4001可以执行图9实施例中的S904。
可选的，处理模块4002可以执行图9实施例中的S905。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设 备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第五CU连接的第一DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU中的CU-CP连接的第二DU。
在一种可能的实施方式中，所述接收模块4001具体用于：接收RRC重配置消息，所述RRC重配置消息包括所述随机接入配置。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图27为本申请实施例提供又一种通信装置的结构示意图。该通信装置500可以应用于终端设备。请参见图27，该通信装置500包括处理器5001、接收器5002和存储器5003，所述存储器5003中存储有程序指令，所述处理器5001执行所述存储器5003中的程序指令，示例性的，处理器5001、接收器5002和存储器5003通过通信总线5004通信，其中，
所述接收器5002用于，接收第一网络设备发送的随机接入配置，所述随机接入配置为第二网络设备为所述终端设备分配的，所述随机接入配置包括如下至少一种：两步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值、四步随机接入中的随机接入前导索引值和物理随机接入信道PRACH掩码索引值；
所述处理器5003用于，根据所述随机接入配置接入第二网络设备。
可选的，接收器5001可以具有图26实施例中接收模块4001的功能。处理器5003可以具有图26实施例中处理模块4002的功能。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方式中，所述第一网络设备为第一集中式单元CU，所述第二网络设备为第二CU。
在一种可能的实施方式中，所述第一网络设备为第三CU中的控制面CU-CP，所述第二网络设备为第四CU中的CU-CP。
在一种可能的实施方式中，所述第一网络设备为第五CU，所述第二网络设备为所述第五CU连接的第一DU。
在一种可能的实施方式中，所述第一网络设备为第六CU中的CU-CP，所述第二网络设备为所述第六CU中的CU-CP连接的第二DU。
在一种可能的实施方式中，所述接收器5001具体用于：接收RRC重配置消息，所述RRC重配置消息包括所述随机接入配置。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
可选的，上述处理器可以是中央处理单元(Central Processing Unit，CPU)，还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)等。通用处理器可以是微处 理器或者该处理器也可以是任何常规的处理器等。结合本申请所公开的业务处理方法实施例中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。
本申请提供一种存储介质，所述存储介质用于存储计算机程序，所述计算机程序用于实现上述实施例所述的通信方法。
实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一可读取存储器中。该程序在执行时，执行包括上述各方法实施例的步骤；而前述的存储器(存储介质)包括：只读存储器(英文：read-only memory，缩写：ROM)、RAM、快闪存储器、硬盘、固态硬盘、磁带(英文：magnetic tape)、软盘(英文：floppy disk)、光盘(英文：optical disc)及其任意组合。
本申请实施例是参照根据本申请实施例的方法、设备(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设备的处理单元以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理单元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设备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设备上，使得在计算机或其他可编程设备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设备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。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。
在本申请中，术语“包括”及其变形可以指非限制性的包括；术语“或”及其变形可以指“和/或”。本本申请中术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。本申请中，“多个”是指两个或两个以上。“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“/”一般表示前后关联对象是一种“或”的关系。

Claims (26)

  1. 一种通信方法，其特征在于，包括：
    网络设备接收终端设备发送的第一信息，所述第一信息为所述终端设备的两步随机接入过程的信息；
    所述网络设备根据所述第一信息更新随机接入配置。
  2. 根据权利要求1所述的方法，其特征在于，所述第一信息包括如下信息中的至少一种：
    所述终端设备在两步随机接入过程中发送的随机接入前导的次数；
    用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息；以及
    用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
  3. 根据权利要求1或2所述的方法，其特征在于，
    所述随机接入配置为所述终端设备所在的小区对应的随机接入配置，或者，
    所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的随机接入配置。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述网络设备包括集中式单元CU和分布式单元DU，所述CU和所述DU相连；
    网络设备接收终端设备发送的第一信息，包括：
    所述CU接收所述终端设备发送的所述第一信息；
    所述网络设备根据所述第一信息更新随机接入配置，包括：
    所述CU根据所述第一信息更新所述随机接入配置；
    所述CU根据所述第一信息更新所述随机接入配置之后，还包括：
    所述CU向所述DU发送更新后的所述随机接入配置。
  5. 根据权利要求4所述的方法，其特征在于，所述CU根据所述第一信息更新所述随机接入配置之前，还包括：
    所述CU接收所述DU发送的所述随机接入配置。
  6. 根据权利要求1-3任一项所述的方法，其特征在于，所述网络设备包括CU和DU，所述CU包括集中式单元控制面CU-CP和集中式单元用户面CU-UP；
    网络设备接收终端设备发送的第一信息，包括：
    所述CU-CP接收所述终端设备发送的所述第一信息；
    所述网络设备根据所述第一信息更新随机接入配置，包括：
    所述CU-CP根据所述第一信息更新所述随机接入配置；
    所述CU-CP根据所述第一信息更新所述随机接入配置之后，还包括：
    所述CU-CP向所述DU发送更新后的所述随机接入配置。
  7. 根据权利要求6所述的方法，其特征在于，所述CU-CP根据所述第一信息更新所述随机接入配置之前，还包括：
    所述CU-CP接收所述DU发送的所述随机接入配置。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，所述随机接入配置包括如下信息中的至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置、用于指示是否可以从两步随机接入回退至四步随机接入的指示信息、四步随机接入中随机接入前导的PRACH配置、两步随机接入中随机接入前导分组、四步随机接入中随机接入前导分组、两步随机接入中随机接入回退参数、四步随机接入中随机接入回退参数、两步随机接入中随机接入传输功率控制参数、四步随机接入中随机接入传输功率控制参数。
  9. 一种通信方法，其特征在于，包括：
    终端设备获取第一信息，所述第一信息为所述终端设备的两步随机接入过程的信息；
    所述终端设备向网络设备发送所述第一信息，所述第一信息用于使得所述网络设备更新随机接入配置。
  10. 根据权利要求9所述的方法，其特征在于，所述第一信息包括如下信息中的至少一种：
    所述终端设备在两步随机接入过程中发送的随机接入前导的次数；
    用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息；以及
    用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
  11. 根据权利要求9或10所述的方法，其特征在于，
    所述随机接入配置为所述终端设备所在的小区对应的随机接入配置，或者，
    所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的随机接入配置。
  12. 根据权利要求9-11任一项所述的方法，其特征在于，所述随机接入配置包括如下信息中的至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置、用于指示是否可以从两步随机接入回退至四步随机接入的指示信息、四步随机接入中随机接入前导的PRACH配置、两步随机接入中随机接入前导分组、四步随机接入中随机接入前导分组、两步随机接入中随机接入回退参数、四步随机接入中随机接入回退参数、两步随机接入中随机接入传输功率控制参数、四步随机接入中随机接入传输功率控制参数。
  13. 一种通信装置，其特征在于，包括接收器、处理器和存储器，所述存储器中存储有程序指令，所述处理器执行所述存储器中的程序指令，其中，
    所述接收器用于，接收终端设备发送的第一信息，所述第一信息为所述终端设备的两步随机接入过程的信息；
    所述处理器用于，根据所述第一信息更新随机接入配置。
  14. 根据权利要求13所述的装置，其特征在于，所述第一信息包括如下信息中的至少一种：
    所述终端设备在两步随机接入过程中发送的随机接入前导的次数；
    用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息；以及
    用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
  15. 根据权利要求13或14所述的装置，其特征在于，
    所述随机接入配置为所述终端设备所在的小区对应的随机接入配置，或者，
    所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的随机接入配置。
  16. 根据权利要求13-15任一项所述的装置，其特征在于，网络设备包括集中式单元CU和分布式单元DU，所述CU和所述DU相连；所述装置还包括发送器，其中，
    所述发送器用于，向所述DU发送更新后的所述随机接入配置。
  17. 根据权利要求16所述的装置，其特征在于，
    所述接收器还用于，在所述处理器根据所述第一信息更新所述随机接入配置之前接收所述DU发送的所述随机接入配置。
  18. 根据权利要求13-15任一项所述的装置，其特征在于，网络设备包括CU和DU，所述CU包括集中式单元控制面CU-CP和集中式单元用户面CU-UP；
    发送器还用于，向所述DU发送更新后的所述随机接入配置。
  19. 根据权利要求18所述的装置，其特征在于，
    所述接收器还用于，在所述处理器根据所述第一信息更新所述随机接入配置之前接收所述DU发送的所述随机接入配置。
  20. 根据权利要求13-19任一项所述的装置，其特征在于，所述随机接入配置包括如下信息中的至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置、用于指示是否可以从两步随机接入回退至四步随机接入的指示信息、四步随机接入中随机接入前导的PRACH配置、两步随机接入中随机接入前导分组、四步随机接入中随机接入前导分组、两步随机接入中随机接入回退参数、四步随机接入中随机接入回退参数、两步随机接入中随机接入传输功率控制参数、四步随机接入中随机接入传输功率控制参数。
  21. 一种通信装置，其特征在于，包括处理器、发送器和存储器，所述存储器中存储有程序指令，所述处理器执行所述存储器中的程序指令，其中，
    所述处理器用于，获取第一信息，所述第一信息为终端设备的两步随机接入过程的信息；
    所述发送器用于，向网络设备发送所述第一信息，所述第一信息用于使得所述网络设备更新随机接入配置。
  22. 根据权利要求21所述的装置，其特征在于，所述第一信息包括如下信息中的至少一种：
    所述终端设备在两步随机接入过程中发送的随机接入前导的次数；
    用于指示在已发送的随机接入前导中是否检测到至少一个随机接入前导发生竞争的指示信息；以及
    用于指示在已发送的净荷所使用的时频资源中是否检测到至少一个时频资源发生竞争的指示信息。
  23. 根据权利要求21或22所述的装置，其特征在于，
    所述随机接入配置为所述终端设备所在的小区对应的随机接入配置，或者，
    所述随机接入配置为所述终端设备进行随机接入时所使用的同步信号与物理广播信道块SSB对应的随机接入配置。
  24. 根据权利要求21-23任一项所述的装置，其特征在于，所述随机接入配置包括如下信息中的至少一种：两步随机接入中随机接入前导的物理随机接入信道PRACH配置、两步随机接入中净荷的时频资源配置、用于指示是否可以从两步随机接入回退至四步随机接入的指示信息、四步随机接入中随机接入前导的PRACH配置、两步随机接入中随机接入前导分组、四步随机接入中随机接入前导分组、两步随机接入中随机接入回退参数、四步随机接入中随机接入回退参数、两步随机接入中随机接入传输功率控制参数、四步随机接入中随机接入传输功率控制参数。
  25. 一种计算机可读存储介质，其特征在于，所述存储介质用于存储计算机程序，所述计算机程序被计算机或处理器执行时用于实现权利要求1-8任一项所述的通信方法。
  26. 一种计算机可读存储介质，其特征在于，所述存储介质用于存储计算机程序，所述计算机程序被计算机或处理器执行时用于实现权利要求9-12任一项所述的通信方法。
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EP3941148A4 (en) 2022-05-18
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US20220022251A1 (en) 2022-01-20
JP2022527919A (ja) 2022-06-07
CN111757529A (zh) 2020-10-09

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