WO2023179365A1 - 一种通信方法和通信装置 - Google Patents

一种通信方法和通信装置 Download PDF

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Publication number
WO2023179365A1
WO2023179365A1 PCT/CN2023/080319 CN2023080319W WO2023179365A1 WO 2023179365 A1 WO2023179365 A1 WO 2023179365A1 CN 2023080319 W CN2023080319 W CN 2023080319W WO 2023179365 A1 WO2023179365 A1 WO 2023179365A1
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WIPO (PCT)
Prior art keywords
information
communication interface
indication information
communication
communicate
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Application number
PCT/CN2023/080319
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English (en)
French (fr)
Inventor
孙飞
曾清海
韩锋
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华为技术有限公司
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Publication of WO2023179365A1 publication Critical patent/WO2023179365A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/40—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/09—Management thereof
    • H04W28/0958—Management thereof based on metrics or performance parameters

Definitions

  • the embodiments of the present application relate to the field of communication, and more specifically, to a communication method and a communication device.
  • a single base station can be composed of a centralized unit (CU) and a distributed unit (DU). Multiple DUs share one CU, which can save costs and facilitate network expansion. Furthermore, the centralized unit CU can also be divided into a control plane (CU-control plane, CU-CP) and a user plane (CU-user plane, CU-UP). Among them, CU-CP is responsible for the control plane function, and CU-UP is responsible for the user plane function.
  • a single base station can be composed of a single CU-CP, multiple CU-UPs and multiple DUs. A single CU-CP can be connected to multiple DUs and multiple CUs. -UP.
  • Figure 1 is a schematic diagram of the separation architecture of CU-CP and CU-UP.
  • CU-CP uses the E1 communication interface to communicate with CU-UP.
  • CU-CP uses the F1-C communication interface to communicate with DU.
  • CU-UP Use the F1-U communication interface to communicate with DU.
  • This architecture is susceptible to a CU-CP single point failure, which may cause the interruption of multiple CU-UPs and/or multiple DU traffic of the base station and the disconnection of the terminal equipment served by the base station.
  • Embodiments of the present application provide a communication method and communication device.
  • the DU and/or the first CU-UP can use communication when the first CU-CP fails or is overloaded.
  • the interface communicates with the second CU-CP as backup, which reduces service interruption and improves the robustness of the system.
  • the first aspect provides a communication method that is applied to the second CU-CP, or the chip that executes the second CU-CP function, or the processor that executes the second CU-CP function, or the second CU-CP
  • the software or logic module of the CP function is not limited by this application. Comprising: receiving context information from the first CU-CP, the context information includes context of the DU and/or the first CU-UP, and the context information is used for the second CU-CP to communicate with the DU and/or the first CU-UP; receiving A first message; using the communication interface to communicate with the DU and/or the first CU-UP according to the first message.
  • the context information from the first CU-CP may be received before the second CU-CP uses the communication interface to communicate with the DU and/or the first CU-UP, or the second CU-CP may use the communication interface. After communication with the DU and/or the first CU-UP.
  • the communication method provided by the embodiment of the present application provides backup for the first CU-CP, so that when the first CU-CP fails or is overloaded, the DU and/or the first CU-UP can use the communication interface as a backup
  • the second CU-CP communicates, which reduces business interruption and improves the robustness of the system.
  • the second CU-CP receives the first CU-CP
  • the context information enables the second CU-CP to quickly use the context information to provide services for the DU and/or the first CU-UP, thereby reducing the delay of system failure.
  • receiving the context information from the first CU-CP may be receiving the context information from the first CU-CP through the access and mobility management function network element AMF.
  • the first CU-CP may send context information to the AMF periodically or in real time, and the context information may be obtained through the AMF when communicating with the DU and/or the first CU-UP using a communication interface.
  • the context information includes identification information of the first CU-CP.
  • the identification information of the first CU-CP can be sent to the AMF, so that the AMF can send the context information of the first CU-CP to the second CU-CP.
  • the identification information of a terminal device served by the first CU-CP may also be sent to the AMF, so that the AMF can send context information related to the terminal device to the second CU-CP.
  • the second CU-CP serves the DU and/or the first CU-UP, obtain the context information from the AMF, ensuring that the second CU-CP does not serve as the backup of the first CU-CP.
  • the DU and/or the first CU-UP serves, the work of the second CU-CP is not affected, which reduces the overhead of the second CU-CP in receiving context information.
  • the first message includes status value information from the first CU-CP.
  • exemplary beneficial effects include: using the status value information, it can be timely determined whether the first CU-CP fails, thereby reducing service interruption and improving system robustness.
  • using the communication interface to communicate with the DU and/or the first CU-UP according to the first message includes: determining that the first CU-CP is overloaded or Failure; according to the overload or failure of the first CU-CP, it is determined to use the communication interface to communicate with the DU and/or the first CU-UP; the second CU-CP uses the communication interface to communicate with the DU and/or the first CU-UP.
  • the status value information may be information reflecting the first CU-CP load value. For example, if the load value information is greater than the first threshold, it indicates that the first CU-CP is overloaded.
  • the status value information may be information reflecting whether the first CU-CP is faulty. For example, if the status value information is an error value, it indicates that the first CU-CP is faulty. For another example, if the status value information is empty, it indicates that the first CU-CP is faulty.
  • the first message includes first request information from the DU and/or the first CU-UP, the first request information being used to request to use the communication interface with the second CU-CP communicates.
  • the first message includes first indication information from the first CU-CP, and the first indication information is used to indicate that the first CU-CP is overloaded.
  • the communication interface may be used to communicate with the DU and/or the first CU-CP based on the first CU-CP overload determination.
  • the first indication information may be sent after the first CU-CP determines that it is overloaded, or may be sent by other network elements or units after determining that the first CU-CP is overloaded and instructs the first CU-CP to send.
  • the first message includes second indication information from the first CU-CP, the second indication information indicating using the communication interface with the DU and/or the first CU-CP.
  • UP communicates.
  • the second indication information may be sent after the first CU-CP determines that it is overloaded and instructs the second CU-CP to use the communication interface to communicate with the DU and/or the first CU-UP, or may be other information.
  • the network element or unit determines that the first CU-CP is overloaded, it determines to instruct the second CU-CP to use the communication interface to communicate with the DU and/or the first CU-UP and sends it to the first CU-CP and forwarded by the first CU-CP.
  • using the communication interface for communication may be establishing and using the communication interface for communication, or activating a standby communication interface and using the communication interface for communication.
  • the standby communication interface is established in advance, and the party using the communication interface puts the communication interface in a standby state or a cold backup state by sending a standby instruction message.
  • a communication method is provided, applied to the first CU-CP, or a chip that executes the first CU-CP function, or a processor that executes the first CU-CP function, or a processor that executes the first CU-CP function.
  • the software or logic module of the CP function is not limited by this application. It includes: sending context information to the second CU-CP, where the context information includes context of the DU and/or the first CU-UP, and the context information is used for the second CU-CP to communicate with the DU and/or the first CU-UP.
  • the communication method provided by the embodiment of the present application provides backup for the first CU-CP, so that when the first CU-CP fails or is overloaded, the DU and/or the first CU-UP can use the communication interface as a backup
  • the second CU-CP communicates, which reduces business interruption and improves the robustness of the system.
  • the second CU-CP receives the context information of the first CU-CP, so that the second CU-CP can quickly provide services for the DU and/or the first CU-UP according to the context information, thereby reducing the delay of system failure.
  • the second CU-CP is determined by the first CU-CP from the first CU-CP set, and the first CU-CP set also includes the first CU-CP, any two CU-CPs in the first CU-CP set support each other as backup; the first CU-CP sends third indication information to the DU and/or the first CU-UP, and the third The indication information is used to indicate the second CU-CP, so that the DU and/or the first CU-UP determine the second CU-CP as the backup.
  • the first CU-CP set can be understood as a set of CU-CPs that are backups of the first CU-CP, and the properties or configurations of the CU-CPs included in the set can be similar.
  • fourth indication information is sent to the DU and/or the first CU-UP, the fourth indication information is used to indicate the first CU-CP set, the first The CU-CP set includes a first CU-CP and a second CU-CP. Any two CU-CPs in the first CU-CP set support each other as backup; receive feedback information from the DU and/or the first CU-UP. , this feedback information is used to indicate the second CU-CP.
  • the first CU-CP receives the feedback information of the DU and/or the first CU-UP, and determines the second CU-CP for subsequent interaction with the second CU-CP.
  • the first CU-CP indicates the first CU-CP set to the DU and/or the first CU-UP, so that the DU and/or the first CU-UP can select the first CU-CP set from the first CU-CP set. Determine the second CU-CP as backup.
  • status value information of the first CU-CP is sent to the second CU-CP, and the status value information is used to determine overload or failure of the first CU-CP.
  • status value information of the first CU-CP is sent to the DU and/or the first CU-UP, and the status value information is used for the first CU-CP to be overloaded or Determination of fault.
  • the status value information may be information reflecting the first CU-CP load value. For example, if the load value information is greater than the first threshold, it indicates that the first CU-CP is overloaded.
  • the status value information may be information reflecting whether the first CU-CP is faulty. For example, if the status value information is an error value, it indicates that the first CU-CP is faulty. For another example, if the status value information is empty, it indicates that the first CU-CP is faulty.
  • first indication information is sent to the second CU-CP, where the first indication information is used to indicate that the first CU-CP is overloaded.
  • fifth indication information is sent to the DU and/or the first CU-UP, where the fifth indication information is used to indicate that the first CU-CP is overloaded.
  • the first indication information or the fifth indication information may be sent by the first CU-CP after determining that it is overloaded based on its own load value being greater than the first threshold.
  • the first indication information or the fifth indication information may also be No.
  • a CU-CP is sent after receiving indication information from other network elements or units indicating that the first CU-CP is overloaded.
  • other network elements or units may be AMF.
  • second indication information is sent to the second CU-CP, where the second indication information is used to instruct the second CU-CP to use the communication interface to communicate with the DU and/or the second CU-CP.
  • a CU-UP communicates.
  • the first CU-CP sends sixth indication information to the DU and/or the first CU-UP, where the sixth indication information is used to indicate the DU and/or the first CU-UP.
  • One CU-UP communicates with the second CU-CP using the communication interface.
  • the second indication information or the sixth indication information may be that the first CU-CP determines that it is overloaded based on its own load value being greater than the first threshold and then determines to instruct the second CU-CP to use the communication interface to communicate with the DU and/or the third CU-CP.
  • the first CU-UP communicates or instructs the DU and/or the first CU-UP sends it after communicating with the second CU-CP using the communication interface.
  • the second instruction information or the sixth instruction information can also be from other network elements or units.
  • the second CU-CP After determining that the first CU-CP is overloaded based on the first CU-CP load value being greater than the first threshold, it is determined to instruct the second CU-CP to use the communication interface to communicate with the DU and/or the first CU-UP or to instruct the DU and/or the first CU-UP.
  • the CU-UP uses the communication interface to communicate with the second CU-CP and then sends it to the first CU-CP and is forwarded by the first CU-CP.
  • using the communication interface for communication may be establishing and using the communication interface for communication, or activating a standby communication interface and using the communication interface for communication.
  • the standby communication interface is established in advance, and the party using the communication interface sends a standby instruction message to put the communication interface in a standby state or a cold backup state.
  • a communication method is provided, applied to a DU or a first CU-UP, or a chip that performs a DU or a first CU-UP function, or a processor that performs a DU or a first CU-UP function, or , the software or logic module that executes the DU or first CU-UP function is not limited by this application.
  • the method includes: determining the second CU-CP; receiving the second message; and sending first request information to the second CU-CP according to the second message, where the first request information is used to request to use the communication interface to communicate with the second CU-CP.
  • the method includes: determining the second CU-CP; the first CU-UP receiving the second message; and sending first request information to the second CU-CP according to the second message, the first request information being used to request to use the communication interface to communicate with the second CU-CP.
  • the second CU-CP communicates.
  • the communication method provided by the embodiment of the present application provides backup for the first CU-CP, so that when the first CU-CP fails or is overloaded, the DU and/or the first CU-UP can use the communication interface as a backup
  • the second CU-CP communicates, which reduces business interruption and improves the robustness of the system.
  • determining the second CU-CP includes: receiving third indication information of the first CU-CP, and determining the second CU-CP according to the third indication information.
  • the third indication information is used to indicate the second CU-CP.
  • the first CU-UP determines the second CU-CP, including: receiving third indication information of the first CU-CP, and determining the second CU-CP according to the third indication information, where the third indication information is used to indicate the second CU-CP.
  • CU-CP determines the second CU-CP, including: receiving third indication information of the first CU-CP, and determining the second CU-CP according to the third indication information, where the third indication information is used to indicate the second CU-CP.
  • determining the second CU-CP includes: receiving fourth indication information sent by the first CU-CP, and determining the second CU from the first CU-CP set.
  • the fourth indication information is used to indicate the first CU-CP set
  • the first CU-CP set includes the first CU-CP
  • any two CU-CPs in the first CU-CP set support each other as mutual Backup.
  • determining the second CU-CP includes: receiving fourth indication information sent by the first CU-CP, and determining the second CU-CP from the first CU-CP set, where the fourth indication information is used to indicate the first CU -CP set, the first CU-CP set includes the first CU-CP, and any two CU-CPs in the first CU-CP set support each other as backups.
  • the third aspect after determining the second CU-CP from the first CU-CP set, feedback information is sent to the first CU-CP, where the feedback information is used to indicate the second CU-CP. CU-CP. Alternatively, after determining the second CU-CP from the first CU-CP set, feedback information is sent to the first CU-CP, where the feedback information is used to indicate the second CU-CP.
  • the second message includes status value information from the first CU-CP.
  • sending the first request information to the second CU-CP according to the second message includes: determining the first CU-CP according to the status value information of the first CU-CP. Overload or failure; determine to communicate with the second CU-CP using the communication interface according to the overload or failure of the first CU-CP; send the first request information to the second CU-CP.
  • sending the first request information to the second CU-CP according to the second message includes: determining that the first CU-CP is overloaded or faulty according to the status value information of the first CU-CP; determining that the first CU-CP is overloaded or faulty according to the first CU-CP.
  • the status value information may be information reflecting the first CU-CP load value. For example, if the load value information is greater than the first threshold, it indicates that the first CU-CP is overloaded.
  • the status value information may be information reflecting whether the first CU-CP is faulty. For example, if the status value information is an error value, it indicates that the first CU-CP is faulty. For another example, if the status value information is empty, it indicates that the first CU-CP is faulty.
  • the second message includes fifth indication information from the first CU-CP, the fifth indication information being used to indicate that the first CU-CP is overloaded.
  • the second message includes sixth indication information from the first CU-CP
  • the sixth indication information is used to instruct the DU to use the communication interface with the second CU-CP.
  • CP communicates.
  • the sixth instruction information is used to instruct the first CU-UP to use the communication interface to communicate with the second CU-CP.
  • the network elements or units may also instruct the DU and/or the first CU-UP to use the communication interface to communicate with the first CU-CP.
  • using the communication interface for communication may be establishing and using the communication interface for communication, or activating a standby communication interface and using the communication interface for communication.
  • the standby communication interface is established in advance, and the party using the communication interface puts the communication interface in a standby state or a cold backup state by sending a standby instruction message.
  • a fourth aspect provides a communication device, including a unit for executing each step of the communication method in the above-mentioned first aspect and its respective implementations.
  • the communication device is a communication chip, which may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.
  • the communication device is a communication device (eg, the second CU-CP, etc.), and the communication chip may include a transmitter for sending information, and a receiver for receiving information or data.
  • the communication chip may include a transmitter for sending information, and a receiver for receiving information or data.
  • a communication device including a unit for executing each step of the communication method in the above-mentioned second aspect and its respective implementations.
  • the communication device is a communication chip, which may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.
  • the communication device is a communication device (eg, the first CU-CP, etc.), and the communication chip may include a transmitter for sending information, and a receiver for receiving information or data.
  • the communication chip may include a transmitter for sending information, and a receiver for receiving information or data.
  • a communication device including a unit for executing each step of the communication method in the above-mentioned third aspect and its respective implementations.
  • the communication device is a communication chip, which may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.
  • the communication device is a communication device (for example, DU or the first CU-UP, etc.), and the communication chip may include a transmitter for sending information, and a receiver for receiving information or data.
  • a seventh aspect provides a communication device, including a processor and a memory.
  • the memory is used to store a computer program.
  • the processor is used to call and run the computer program from the memory, so that the communication device executes the above first aspect and Communication methods in its various implementations.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor.
  • the communication device also includes a transmitter (transmitter) and a receiver (receiver).
  • An eighth aspect provides a communication device, including a processor and a memory.
  • the memory is used to store a computer program.
  • the processor is used to call and run the computer program from the memory, so that the communication device executes the above second aspect and Communication methods in its various implementations.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor.
  • the communication device also includes a transmitter (transmitter) and a receiver (receiver).
  • a ninth aspect provides a communication device, including a processor and a memory.
  • the memory is used to store a computer program.
  • the processor is used to call and run the computer program from the memory, so that the communication device executes the above third aspect and Communication methods in its various implementations.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor.
  • the communication device also includes a transmitter (transmitter) and a receiver (receiver).
  • a computer program product includes: a computer program (which may also be called a code, or an instruction).
  • a computer program which may also be called a code, or an instruction.
  • the computer program When the computer program is run, it causes the computer to execute the above-mentioned first aspect to the third aspect. Any of the three aspects and communication methods in each implementation.
  • a communication system which system includes: at least one device for performing the method of the first aspect and its respective implementations.
  • the communication system further includes at least one device for performing the method of the second aspect and its respective implementations.
  • the communication system further includes at least one device for performing the method of the third aspect and its respective implementations.
  • a communication system which system includes: at least one device for performing the method of the second aspect and its respective implementations.
  • the communication system further includes at least one device for performing the method of the first aspect and its respective implementations.
  • the communication system further includes at least one device for performing the method of the third aspect and its respective implementations.
  • a communication system which system includes: at least one device for executing the third aspect and its respective A device for implementing a method.
  • the communication system further includes at least one device for performing the method of the first aspect and its respective implementations.
  • the communication system further includes at least one device for performing the method of the second aspect and its respective implementations.
  • a chip system including a memory and a processor.
  • the memory is used to store a computer program.
  • the processor is used to call and run the computer program from the memory, so that the communication device installed with the chip system executes Communication methods in any of the above aspects and their respective implementations.
  • the chip system may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.
  • Figure 1 is a schematic diagram of the separation architecture of CU-CP and CU-UP.
  • FIG. 2 is a schematic diagram of the system architecture involved in the embodiment of the present application.
  • FIG. 3 is a schematic diagram of an example of a communication method provided by an embodiment of the present application.
  • Figure 4 is a schematic diagram of an embodiment in which the first CU-CP determines the second CU-CP from the first CU-CP set provided by this application.
  • Figure 5 is an example of the communication method provided by the embodiment of the present application.
  • Figure 6 is another example of the communication method provided by the embodiment of the present application.
  • FIG. 7 is a schematic diagram of another example of the communication method provided by the embodiment of the present application.
  • FIG. 8 is a schematic diagram of an example of a communication device provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of another example of a communication device provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of another example of a communication device provided by an embodiment of the present application.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX global interoperability for microwave access
  • the terminal equipment in the embodiment of this application may refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or User device.
  • the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a device with wireless communications Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in an evolved public land mobile network (PLMN) etc., the embodiments of the present application are not limited to this.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the network device in the embodiment of this application may be a device used to communicate with a terminal device.
  • the network device may be an evolutionary base station (eNB or eNodeB) in the LTE system, or it may be a cloud wireless access network.
  • eNB evolutionary base station
  • eNodeB eNodeB
  • a wireless controller in a cloud radio access network (CRAN) scenario or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a 5G network or a network device in an evolved PLMN network etc., the embodiments of this application are not limiting.
  • Figure 2 shows a schematic diagram of the system architecture involved in the embodiment of the present application.
  • it is the separation architecture of CU-CP and CU-UP.
  • a single DU can communicate with multiple CU-CPs at the same time using the F1-C interface, and a single CU-UP can communicate with multiple CUs at the same time.
  • -CP uses the E1 interface for communication.
  • it is a separated architecture of CU and DU.
  • a single DU can communicate with multiple CUs through the F1 interface at the same time.
  • Figure 3 is a schematic diagram of an example of a communication method provided by an embodiment of the present application. As shown in Figure 3, the method 300 includes:
  • S310 Receive the first message, and communicate with the DU and/or the first CU-UP using the communication interface according to the first message.
  • the embodiments of the present application are applied to the second CU-CP, or the chip that performs the second CU-CP function, or the processor that performs the second CU-CP function, or the software or logic module that performs the second CU-CP function. etc., this application is not limited. It should be noted that communication between the first CU-CP, the second CU-CP, the DU, and the first CU-UP and with certain network elements of the core network requires communication interfaces.
  • the communication interface needs to be established or activated.
  • using the communication interface for communication may include establishing and using the communication interface for communication.
  • the communication interface is first established and then the communication interface is used for communication.
  • communicating using the communication interface may include activating a standby communication interface and communicating using the communication interface.
  • the standby communication interface is established in advance. Specifically, before there is a communication requirement, the communication interface is pre-established and the communication interface is placed in a standby state through the standby indication information. When there is a communication requirement, the standby communication interface is first activated and then the communication interface is used for communication.
  • the two parties communicating using the communication interface can be A and B.
  • the standby communication interface can be established by A request and activated by B.
  • the standby communication interface can also be established by A request and activated by A.
  • the process of using the communication interface to communicate between the CU-CP and the DU may include the F1-C communication interface establishment process: the CU-CP sends the F1-C communication interface establishment request information to the DU, and the DU receives the request information and sends it to the DU.
  • the CU-CP sends a response message corresponding to the request information.
  • CU-CP and DU can communicate through this F1-C interface.
  • the F1-C communication interface establishment request information can also be sent by the DU to the CU-CP, and the response message is adaptively modified.
  • the embodiment of this application does not specifically limit the initiator of the communication interface establishment request.
  • the F1-C communication interface establishment process can be completed in advance, and then the CU-CP sends a standby indication to the DU, indicating that the F1-C communication interface is in a standby state.
  • the process of using the communication interface to communicate between the CU-CP and the DU may include the process of activating the F1-C communication interface: the CU-CP sends an activation indication to the DU, indicating that the F1-C The communication interface is active.
  • CU-CP and DU can communicate through the activated F1-C interface.
  • CU-CP, CU-UP, etc. can be hardware devices that execute user plane or control plane functions, and CU-CP, CU-UP, etc. can also be hardware devices that execute user plane functions. Or the software module of the control plane function, that is to say, CU-CP and CU-UP can belong to the same hardware device, which is not limited in the embodiment of the present application.
  • the second CU-CP belongs to the first CU-CP set. Any two CU-CPs in the first CU-CP set support each other's backup.
  • the first CU-CP set includes a first CU-CP and a second CU-CP.
  • the second CU-CP can be understood as a backup of the first CU-CP
  • the first CU-CP can be understood as a source CU-CP that provides services for the DU and/or the first CU-UP.
  • other CU-CPs other than the first CU-CP included in the first CU-CP set may only serve as backups of the first CU-CP, or, other than the first CU-CP in the first CU-CP set Other CU-CPs other than the CP will not serve other terminal devices except the terminal device under the first CU-CP.
  • the terminal equipment under the first CU-CP is the terminal equipment served by the base station to which the first CU-CP belongs.
  • the terminal equipment under the first CU-CP can also be all DUs served by the first CU-CP and/or the terminal equipment under the first CU-UP, that is, the DU and/or the first CU-UP serve the terminal equipment.
  • the first CU-CP serves the DU and/or the first CU-UP.
  • the configuration information of the CP may be consistent with the configuration information of the first CU-CP.
  • other CU-CPs other than the first CU-CP included in the first CU-CP set may not only serve as backups of the first CU-CP, or, other than the first CU-CP included in the first CU-CP set may Before serving as the backup of the first CU-CP, other CU-CPs other than the CP can also serve other terminal devices other than the terminal devices under the first CU-CP.
  • the configuration information of the CP may be inconsistent with the configuration information of the first CU-CP.
  • the configuration information of multiple CU-CPs in the first CU-CP set may include global cell identifier (cell global identifier, CGI), user plane and control plane data encryption and integrity protection related configurations (for example, one or more of KRRCint (RRC signaling integrity protection key), KRRCenc (RRC signaling encryption key), KUPint (user plane integrity protection key), KUPenc (user plane encryption key)) .
  • CGI global cell identifier
  • KRRCint RRC signaling integrity protection key
  • KRRCenc RRC signaling encryption key
  • KUPint user plane integrity protection key
  • KUPenc user plane encryption key
  • multiple CU-CPs in the first CU-CP set may share encryption and integrity protection keys for user plane and control plane data.
  • one of multiple network elements or units can be configured from the first CU.
  • the second CU-CP may be determined by the OAM of the core network from the first CU-CP set and pre-configured to the first CU-CP.
  • the second CU-CP may be determined by the OAM of the core network from the first CU-CP set, Preconfigured to the DU or the first CU-UP through the first CU-CP.
  • one of multiple network elements or units may obtain or self- Configure related information of the first CU-CP set.
  • the relevant information of the first CU-CP set may be pre-configured to the first CU-CP by OAM or AMF.
  • the relevant information of the first CU-CP set may be sent by the first CU-CP to the AMF, DU or first CU-UP.
  • the relevant information of the first CU-CP set includes but is not limited to at least one of the following:
  • the ID of the first CU-CP set (can be CU-CP pool/set ID);
  • IP address information of the CU-CP included in the first CU-CP set or, more specifically, IP address list information of the CU-CP;
  • Identification information of CU-CPs included in the first CU-CP set or, specifically, identification list information of CU-CPs;
  • the cooperation of other network elements or units is required. After a different network element or unit determines the second CU-CP, it can also request the second CU-CP to other network elements. Or the unit indicates the second CU-CP to facilitate subsequent interactions between other network elements or units and the second CU-CP.
  • the first CU-CP may obtain the relevant information of the first CU-CP set from the AMF, or may use the OAM's predetermined Configure to obtain relevant information of the first CU-CP set. After obtaining the relevant information of the first CU-CP set, the first CU-CP may determine the second CU-CP from the first CU-CP set according to the relevant information of the first CU-CP set.
  • the first CU-CP may send third indication information to the DU and/or the first CU-UP.
  • the third indication information is used to instruct the second CU-CP so that Subsequent interactions between the DU and/or the first CU-UP and the second CU-CP.
  • the third indication information is used to indicate the DU and/or the first CU-UP and the second CU-CP as a backup of the first CU-CP.
  • the form of the third indication information used to indicate the second CU-CP may include indicating the identity of the second CU-CP, or indicating the IP address information of the second CU-CP, or indicating the second CU-CP. CP name information, etc.
  • the first CU-CP may obtain the relevant information of the first CU-CP set from the AMF, or may obtain the third CU-CP through preconfiguration of the OAM.
  • Related information of a CU-CP set The first CU-CP may send fourth indication information to the DU and/or the first CU-UP, where the fourth indication information is used to indicate the first CU-CP set.
  • the fourth indication information is used to indicate relevant information of the first CU-CP set, so that the DU and/or the first CU-CP determines the second CU-CP from the first CU-CP set.
  • the second CU-CP can be determined from the first CU-CP set according to the relevant information of the first CU-CP set.
  • feedback information may be sent to the first CU-CP.
  • the feedback information is used to indicate the second CU-CP, so that the first CU-CP can communicate with the second CU-CP. Subsequent interactions of CU-CP.
  • the AMF when the AMF determines the second CU-CP from the first CU-CP set, the AMF can configure the second CU-CP by itself.
  • the AMF can also obtain the relevant information of the first CU-CP set pre-configured by OAM from the first CU-CP and determine the second CU-CP based on the relevant information of the first CU-CP set. The information determines the second CU-CP.
  • the second CU-CP may be specifically determined based on the priority information of the CU-CP in the relevant information of the first CU-CP set.
  • the CU-CP with the highest priority in the first CU-CP set serves as the second CU-CP.
  • the CU-CP with the highest priority cannot provide services as the second CU-CP
  • the CU-CP with the second highest priority can be selected as the second CU-CP, and so on to determine the second CU-CP.
  • the above different network elements or units may send A backup service request related to the DU and/or the first CU-UP in order to determine the CU-CP that can serve the DU and/or the first CU-UP as the second CU-CP.
  • the backup service request may include information related to the DU and/or the first CU-UP, such as identification information of the DU or the first CU-UP, or cell list information under the DU, or information related to the DU and the first CU-UP. /or resource configuration and other information related to the first CU-UP.
  • One or more CU-CPs in the first CU-CP set may determine whether they can serve as backups for the first CU-CP as DU and/or the first CU-UP based on the backup service request and their own load and other information. Serve.
  • one or more CU-CPs in the first CU-CP set may send a message to the different network elements or units mentioned above.
  • the acknowledgment can be used as a backup of the first CU-CP, or the acknowledgment can serve the DU and/or the first CU-UP. It should be understood that this process can be understood as a handover preparation process.
  • the different network elements or units mentioned above may select one CU-CP from the one or more CU-CPs as the second CU-CP according to the confirmation information.
  • Figure 4 is a schematic diagram of an embodiment provided by this application in which the first CU-CP determines the second CU-CP from the first CU-CP set and notifies the DU and/or the first CU-UP.
  • method 400 is an example of the above method steps enumerated for the convenience of readers' understanding.
  • the process 400 includes:
  • the first CU-CP or the second CU-CP or the DU or the first CU-UP is the execution subject.
  • the execution subject It can be a second CU-CP, or a chip that performs the second CU-CP function, or a processor that performs the second CU-CP function, or a software or logic module that performs the second CU-CP function. This application Not limited.
  • the first CU-CP obtains relevant information of the first CU-CP set from OAM or AMF.
  • the first CU-CP determines the second CU-CP from the first CU-CP set.
  • the first CU-CP determines the second CU-CP from the first CU-CP set according to the relevant information of the first CU-CP set.
  • the first CU-CP determines the second CU-CP from the first CU-CP set to determine the second CU-CP based on the priority information.
  • the first CU-CP determines the second CU-CP from the first CU-CP set, which may include the above-mentioned first CU-CP sending to one or more CU-CPs in the first CU-CP set.
  • Backup service requests and other processes.
  • the first CU-CP sends third indication information to the DU and/or the first CU-UP, where the third indication information is used to indicate the second CU-CP.
  • the process of the first CU-CP determining the second CU-CP and notifying the DU and/or the first CU-UP may be that the DU and/or the first CU-CP have a need to establish communication with the second CU-CP using a communication interface. Completed before.
  • the DU and/or the first CU-UP can send a communication interface establishment request to the second CU-CP in advance.
  • the DU and/or the first CU-UP A standby instruction may be sent to the second CU-CP so that the communication interface is in a standby state.
  • the activation of the standby communication interface may be completed by the DU and/or the first CU-UP, or may be completed by the second CU-CP.
  • the DU and/or the first CU-UP may send a communication interface establishment request to the second CU-CP after there is a need to use the communication interface to establish communication with the second CU-CP. , and after the communication interface is established, use the communication interface to communicate with the second CU-CP.
  • the process of the first CU-CP determining the second CU-CP and notifying the DU and/or the first CU-UP may be that the DU and/or the first CU-CP have a need to establish communication with the second CU-CP using a communication interface. completed at the time.
  • the DU and/or the first CU-UP After receiving the third indication information, the DU and/or the first CU-UP sends a communication interface establishment request to the second CU-CP, and after the communication interface is established, uses the communication interface to communicate with the second CU-CP.
  • the first message received by the second CU-CP may include status value information from the first CU-CP.
  • the status value information may be load value information of the first CU-CP.
  • the second CU-CP may determine whether the first CU-CP is overloaded based on the relationship between the load value information and the first threshold. If the load value information is greater than or equal to the first threshold, the second CU-CP may determine that the first CU-CP is overloaded. When the second CU-CP determines that the first CU-CP is overloaded according to the load value information, the second CU-CP may communicate with the DU and/or the first CU-UP using the communication interface.
  • the first CU-CP can still communicate with other network elements or units using the communication interface.
  • the status value information may be status value information for determining whether the first CU-CP is faulty.
  • the second CU-CP determines that the first CU-CP is faulty.
  • the second CU-CP may communicate with the DU and/or the first CU-UP using the communication interface.
  • the status value information abnormality may be that the second CU-CP does not receive status value information from the first CU-CP within the second period or after expiration of a preset timer.
  • the status value abnormality may be that the status value is an error value.
  • the second CU-CP may determine whether the first CU-CP is faulty by detecting the transport layer status of the communication interface between the second CU-CP and the first CU-CP without receiving the status value. information.
  • the second CU-CP determines that the first CU-CP is faulty.
  • the communication interface may be used to communicate with the DU and/or the first CU-UP.
  • the first message received by the second CU-CP includes first indication information from the first CU-CP, and the first indication information is used to indicate that the first CU-CP is overloaded.
  • the second CU-CP may communicate with the DU and/or the first CU-UP using a communication interface according to the first indication information.
  • the first CU-CP Before sending the first indication information, the first CU-CP may first determine that it is overloaded.
  • the first CU-CP determines that it is overloaded by: the first CU-CP determines that it is overloaded based on its own load value information being greater than or equal to the first threshold.
  • the first message received by the second CU-CP includes seventh indication information from the AMF.
  • the seventh indication information may indicate that the first CU-CP is overloaded or faulty, or the seventh indication information may indicate that the second CU-CP is overloaded or faulty.
  • the CU-CP communicates with the DU and/or the first CU-UP using a communication interface.
  • the AMF Before the AMF sends the seventh indication information, it may first determine that the first CU-CP is overloaded or faulty.
  • the AMF can obtain the status value information of the first CU-CP from the first CU-CP periodically or in real time.
  • the status value information can reflect whether the first CU-CP is overloaded or faulty.
  • the AMF can obtain the status value information based on the status value. Judgment of the information determines whether the first CU-CP is overloaded or faulty. If the AMF determines that the first CU-CP is overloaded or faulty, the AMF sends the seventh indication information to the second CU-CP.
  • the first CU-CP determines whether the first CU-CP is overloaded, compared to using other network elements or units such as the AMF to determine whether the first CU-CP is overloaded. This can reduce the signaling overhead caused by transmitting load value information and indication information. , and having the first CU-CP judge itself can reduce judgment errors caused by packet loss and improve the stability and accuracy of the judgment results.
  • the first message received by the second CU-CP includes second instruction information from the first CU-CP.
  • the second instruction information is used to instruct the second CU-CP to use the communication interface to communicate with the DU and/or the first CU-UP communicates.
  • the reason why the first CU-CP sends the second indication information may be that the first CU-CP determines that the first CU-CP is overloaded, or it may be that the first CU-CP receives AMF, DU, or the first CU-CP Instruction information sent by UP.
  • the indication information instructs the first CU-CP to migrate the DU and/or the first CU-UP, that is, instructs the DU and/or the first CU-UP to use the communication interface to communicate with the backup second CU-CP. .
  • the reason why the AMF, DU, or the first CU-UP sends the indication information may be that the AMF, DU, or the first CU-UP determines that the first CU-CP is overloaded, or it may be other reasons. In the embodiment of this application There is no restriction on this.
  • the first message received by the second CU-CP includes first request information from the DU and/or the first CU-UP.
  • the first request information is used to request to use the communication interface to communicate with the second CU-CP.
  • the first request information may be a communication interface establishment request or a communication interface activation request.
  • the embodiment of the present application may further include: the DU and/or the first CU-UP receiving the second message, and sending the first request information to the second CU-CP according to the second message.
  • the second message received by the DU and/or the first CU-UP may include status value information from the first CU-CP.
  • the description of the status value information is similar to the above and will not be repeated here.
  • the DU and/or the first CU-UP may determine that the first CU-CP is overloaded or faulty based on the status value information, and use the communication interface to communicate with the second CU-CP based on the overloaded or faulty determination of the first CU-CP, Thus, the first request information is sent to the second CU-CP.
  • the second message received by the DU and/or the first CU-UP includes fifth indication information from the first CU-CP, and the fifth indication information is used to indicate that the first CU-CP is overloaded.
  • the DU and/or the first CU-UP determines to use the communication interface to communicate with the second CU-CP according to the fifth instruction information, and thereby sends the first request information to the second CU-CP.
  • the first CU-CP Before sending the fifth indication information, the first CU-CP may first determine that the first CU-CP is overloaded. The process of the first CU-CP determining that the first CU-CP is overloaded is similar to the above and will not be described again here.
  • the first CU-CP determining that the first CU-CP is overloaded may also include receiving indication information from the second CU-CP, the indication information indicating that the first CU-CP is overloaded.
  • the process by which the second CU-CP determines that the first CU-CP is overloaded is similar to the process by which the AMF or the like determines that the first CU-CP is overloaded, and will not be described again here.
  • the second CU-CP obtains the status value information of the first CU-CP, determines that the first CU-CP is overloaded, and uses the communication interface to communicate with the DU and/or the first CU-UP accordingly. Compared with the second CU -CP obtains the status value information of the first CU-CP, determines that the first CU-CP is overloaded and sends indication information to the first CU-CP to indicate that the first CU-CP is overloaded, and then the first CU-CP instructs other network elements or
  • the overload solution of the first CU-CP in the unit can save more signaling overhead, simplify the process, and reduce the probability of packet loss errors caused by sending instruction information multiple times, improving the stability of the system.
  • the second message received by the DU and/or the first CU-UP includes sixth indication information
  • the sixth indication information is Instructing the DU and/or the first CU-UP to communicate with the second CU-CP using the communication interface.
  • the DU and/or the first CU-UP determines to communicate with the second CU-CP using the communication interface according to the sixth instruction information, and thereby sends the first request information to the second CU-CP.
  • the sixth indication information may be sent to the DU and/or the first CU-UP after the first CU-CP determines that it is overloaded.
  • the process by which the first CU-CP determines that it is overloaded is similar to the above and will not be described again here.
  • the DU and/or the first CU-UP may not receive the second message, and if it is determined that the software update time of the first CU-CP exceeds the first time, send the second message to the second CU-CP.
  • a request for information may be used to determine that the software update time of the first CU-CP exceeds the first time.
  • the first CU-CP may perform the following steps:
  • the first CU-CP sends Transport Network Layer Association (TNLA) release request (release request) information to the DU.
  • TNLA Transport Network Layer Association
  • This information is used to instruct the release of the F1-C between the first CU-CP and the DU.
  • TNLA for the interface.
  • DU releases TNLA based on this information.
  • the first CU-CP sends TNLA release request information to the first CU-UP.
  • the information is used to instruct to release the TNLA of the E1 interface between the first CU-CP and the first CU-UP.
  • the first CU-UP releases the TNLA according to the instruction.
  • the first CU-CP sends TNLA release request information to the AMF, which is used to instruct to release the TNLA of the NG (next generation) interface between the first CU-CP and the AMF.
  • AMF releases TNLA as directed.
  • the second CU-CP receives or sends a message (for example, receiving the first message)
  • the second CU-CP receives indication information indicating that the second CU-CP is a backup of the first CU-CP.
  • the second CU-CP when the second CU-CP needs to determine whether the first CU-CP is overloaded or faulty, the second CU-CP needs to first determine that it is the backup of the first CU-CP.
  • the indication information may be sent to the second CU-CP by the unit or network element that determines the second CU-CP.
  • the indication information may also be forwarded by the unit or network element that determines the second CU-CP to the second CU-CP through other units or network elements.
  • the DU and/or the first CU-UP may migrate the services of some terminal devices under it to the second CU-CP.
  • the DU and/or the first CU-UP may communicate with the first CU-CP and the second CU-CP simultaneously using the communication interface.
  • the DU and/or the first CU-UP are connected to multiple CU-CPs at the same time, which can reduce the overload of the CU-CP caused by the services of the DU and/or the first CU-UP being on the same CU-CP, and can more easily Flexibly use backup CU-CP to share services, reduce the probability of system failure, and improve network stability.
  • the execution subject may be the second CU-CP, or a chip that executes the second CU-CP function, or a processor that executes the second CU-CP function, or a processor that executes the second CU-CP function.
  • Software or logic modules are not limited by this application. It should be noted that the order of steps S310 and S320 is not limited.
  • the context information may include context information of the DU and/or the first CU-UP.
  • the context information may include context information of at least one terminal device under the first CU-CP.
  • the first CU-CP may send context information directly to the second CU-CP. That is, when the first CU-CP is not faulty or overloaded, the first CU-CP can send the context information to the second CU-CP.
  • the first CU-CP may send context information to the second CU-CP every third period.
  • the first CU-CP may also send context information to the second CU-CP in real time when the context information changes.
  • the second CU-CP may receive the context from the first CU-CP through the core network element.
  • the core network element may be an AMF.
  • the core network element may be a newly introduced network element.
  • the first CU-CP may send the context information to the core network element for storage.
  • the first CU-CP may send context information to the core network element every third cycle.
  • the first CU-CP may also send context information to the core network element in real time when the context information changes.
  • the context information may carry the identity of the first CU-CP and/or the identity of the terminal device under the first CU-CP, So that AMF can mark the context information.
  • the identifier of the first CU-CP is used to identify context information related to the first CU-CP, that is, context information of the DU and/or the first CU-UP.
  • the identifier of the terminal device is used to identify context information related to a certain terminal device.
  • the identity of the first CU-CP may be the globally unique RAN node ID
  • the identity of the terminal device may be the identity of the UE on the NG interface in the RAN node (RAN UE NGAP(next generation application protocol, NG interface application protocol) ID)
  • the second CU-CP when the second CU-CP serves as the backup of the first CU-CP and needs to use the communication interface to communicate with the DU and/or the first CU-UP, the second CU-CP can obtain it from the core network element. This contextual information.
  • the second CU-CP when it obtains the context information from the core network element, it may send the identification of the first CU-CP to the AMF, and the AMF determines the identity of the first CU-CP based on the identification of the first CU-CP. Context information and sent to the second CU-CP.
  • the second CU-CP when it obtains the context information from the core network element, it can send the identifier of a certain terminal device to the AMF.
  • the AMF determines the context information of the terminal device based on the identifier of the terminal device and sends it to the second CU-CP.
  • CU-CP CU-CP.
  • the AMF may proactively send the context information to the second CU-CP.
  • the context information may be sent to the second CU-CP.
  • the context information may also include the identity of the first CU-CP, or the identity of the terminal device, which is used by the AMF to mark the context information when sending a downlink NGAP message to the second CU-CP so that the second CU -The CP learns that the context information is the context of the first CU-CP and/or the context information of a certain terminal device under the first CU-CP.
  • the context information may also include the newly allocated RAN UE NGAP ID for the second CU-CP or AMF to subsequently send the terminal device on the NG interface.
  • the terminal device is marked.
  • the first CU-CP Compared with the first CU-CP sending context information to the second CU-CP in real time or periodically, the first CU-CP stores the context information in the core network element, which can reduce the failure or overload of the first CU-CP.
  • the previous impact on the second CU-CP ensures that the working status of the second CU-CP before it serves as the backup of the first CU-CP to communicate with the DU and/or the first CU-UP using the communication interface is not affected, saving the first Unnecessary signaling overhead for one CU-CP or second CU-CP.
  • the second CU-CP can configure a new UE F1AP ID (such as gNB-CU-CP UE F1AP ID) used under the second CU-CP for the terminal equipment served under it.
  • F1AP F1 application protocol, F1 interface application protocol
  • the second CU-CP can configure a new UE F1AP ID (such as gNB-CU-CP UE F1AP ID) used under the second CU-CP for the terminal equipment served under it.
  • the configuration process may be: when the second CU-CP sends an F1AP message to the DU, the F1AP message may carry the old UE F1AP ID and DU used by the DU and the first CU-CP when sending information on the F1 interface.
  • the new UE F1AP ID used to send information on the F1 interface with the second CU-CP.
  • the DU can replace the old UE F1AP ID with the new UE F1AP ID according to the F1AP message.
  • the DU is not aware of the second CU-CP, that is, the DU is not aware of which CU-CP serves it as a backup (for example, the second CU-CP is determined by the first CU-CP, but the first CU-CP The CU-CP does not send the third indication information to the DU, instructing the DU that the second CU-CP).
  • the DU can also determine which communication interface to send the F1AP message through or which communication interface to use with the second CU-CP based on the new UE F1AP ID. To communicate, that is, the DU can determine the second CU-CP through the new UE F1AP ID.
  • the terminal device served under it can be configured with a new UE E1AP ID used under the second CU-CP (such as gNB-CU-CP UE E1AP ID).
  • the configuration process may be: when the second CU-CP sends an E1AP message to the first CU-UP, the E1AP message may carry the old CU-UP and first CU-CP used when sending information on the E1 interface.
  • the first CU-UP can replace the old UE E1AP ID with the new UE E1AP ID according to the F1AP message.
  • the first CU-UP can also be based on the new UE E1AP ID Determine through which communication interface the E1AP message is sent or which communication interface is used to communicate with the second CU-CP, that is, the first CU-UP can determine the second CU-CP through the new UE E1AP ID.
  • FIG 5 is an example of the communication method provided by the embodiment of the present application. As shown in Figure 5, this example 500 includes:
  • the first CU-CP or the second CU-CP or the DU or the first CU-UP is the execution subject.
  • the execution subject can be a second CU-CP, or a chip that performs the second CU-CP function, or a processor that performs the second CU-CP function, or a software or logic module that performs the second CU-CP function.
  • S510 The DU and/or the first CU-UP receive fourth indication information from the first CU-CP, where the fourth indication information is used to indicate the first CU-CP set.
  • step S310 for obtaining and transmitting the relevant information of the first CU-CP set, reference may be made to step S310, which will not be described again here.
  • S520 The DU and/or the first CU-UP determine the second CU-CP from the first CU-CP set.
  • step S310 the method steps for the DU and/or the first CU-UP to determine the second CU-CP from the first CU-CP may refer to step S310, which will not be described again here.
  • the DU and/or the first CU-UP after determining the second CU-CP from the first CU-CP set, send feedback information to the first CU-CP, where the feedback information is used to indicate the second CU-CP. , so that the first CU-CP determines the second CU-CP for subsequent interactions.
  • the DU and/or the first CU-UP sends communication interface establishment request information to the second CU-CP, and further sends a communication interface standby indication to the second CU-CP.
  • the second CU-CP receives the communication interface establishment request information, and sends a response message of the communication interface establishment request information to the DU and/or the first CU-UP.
  • the second CU-CP receives the communication interface standby instruction, and temporarily does not communicate with the DU and/or the first CU-UP using the communication interface according to the standby instruction.
  • S540 The DU and/or the first CP-UP receive status value information from the first CU-CP, and determine that the first CU-CP is overloaded or faulty based on the status value information.
  • step S310 for relevant description of the status value information, reference may be made to step S310, which will not be described again here.
  • S550 The DU and/or the first CU-UP sends the first request information to the second CU-CP according to the overload or failure of the first CU-CP.
  • the first request information is used to request communication with the second CU-CP using the communication interface.
  • the use of the communication interface for communication is to activate the standby communication interface.
  • S560 The second CU-CP receives context information from the AMF.
  • the context information may be the context information of the DU and/or the first CU-UP, or it may be the context information of a certain terminal device under the first CU-CP.
  • the context information please refer to the steps. S320 will not be described again here.
  • the AMF Before sending the context information to the second CU-CP, the AMF can determine that the second CU-CP is the backup of the first CU-CP from the indication information of other network elements or units, or it can determine the second CU-CP bit itself. A backup of CU-CP.
  • step S560 may occur before any one of steps S510-S550, and there is no limitation here. Reference may be made to the relevant limitations in S320.
  • the second CU-CP may also directly receive the context information from the first CU-CP.
  • This example 500 is only an example and does not constitute any limitation on the method 300.
  • Figure 6 is another example of the communication method provided by the embodiment of the present application. As shown in Figure 6, this example 600 includes:
  • the first CU-CP or the second CU-CP or the DU or the first CU-UP is the execution subject.
  • the execution subject It can be a second CU-CP, or a chip that performs the second CU-CP function, or a processor that performs the second CU-CP function, or a software or logic module that performs the second CU-CP function. This application Not limited.
  • the DU and/or the first CU-UP receives the third indication information from the first CU-CP, and determines the second CU-CP according to the third indication information.
  • the third indication information is used to indicate the second CU-CP.
  • the second CU-CP is determined by the first CU-CP from the first CU-CP set.
  • step S310 the relevant description of the first CU-CP set and how to determine the second CU-CP from the first CU-CP set can refer to step S310, which will not be described again here.
  • the DU and/or the first CU-UP sends communication interface establishment request information to the second CU-CP, and further sends a communication interface standby indication to the second CU-CP.
  • the second CU-CP receives the communication interface establishment request information, and sends a response message of the communication interface establishment request information to the DU and/or the first CU-UP.
  • the second CU-CP receives the communication interface standby instruction, and temporarily does not communicate with the DU and/or the first CU-UP using the communication interface according to the standby instruction.
  • the second CU-CP receives status value information from the first CU-CP, and determines that the first CU-CP is overloaded or faulty based on the status value information.
  • step S310 for relevant description of the status value information, reference may be made to step S310, which will not be described again here.
  • the second CU-CP sends a request for communication using the communication interface to the DU and/or the first CU-UP according to the overload or failure of the first CU-CP.
  • the request for communication using the communication interface is to activate the standby communication interface.
  • the second CU-CP receives context information from the AMF.
  • the context information may be context information of the DU and/or the first CU-UP.
  • the context information reference may be made to step S320, which will not be described again here.
  • step S650 may occur before any one of steps S610-S640, and there is no limitation here. Reference may be made to the relevant limitations in S320.
  • the second CU-CP may also directly receive the context information from the first CU-CP.
  • This example 600 is only an example and does not constitute any limitation on the method 300.
  • the method provided by the embodiment of the present application provides backup for the first CU-CP, so that when the first CU-CP fails or is overloaded, the DU and/or the first CU-UP can use the communication interface to communicate with the backup third CU-CP.
  • the two CU-CPs communicate, which reduces the interruption of services of the corresponding terminal equipment and improves the robustness of the system.
  • Figure 7 is another example of the communication method provided by the embodiment of the present application. As shown in Figure 7, this method is applied in the separation architecture of CU and DU.
  • the method 700 includes:
  • S710 Receive the first message, and communicate with the DU using the communication interface according to the first message.
  • the execution subject may be the second CU, or a chip that performs the second CU function, or a processor that performs the second CU function, or software or logic module that performs the second CU function, etc. This application does not limited.
  • step S310 in method 300 is similar to step S310 in method 300, except that the second CU-CP is replaced with the second CU, the first CU-CP is replaced with the first CU, and the DU and/or the first CU are replaced.
  • step S310 in method 300 please refer to step S310 in method 300, which will not be described again here.
  • the execution subject may be the second CU, or a chip that performs the second CU function, or a processor that performs the second CU function, or software or logic module that performs the second CU function, etc. This application does not limited.
  • step S720 and step S710 can be replaced.
  • step S320 in method 300 is similar to step S320 in method 300, except that the second CU-CP is replaced with the second CU, the first CU-CP is replaced with the first CU, and the DU and/or the first CU are replaced.
  • step S320 in method 300 please refer to step S320 in method 300, which will not be described again here.
  • FIG. 8 is an example of a communication device according to an embodiment of the present application.
  • the communication device 800 includes a transceiver unit 810 and a processing unit 820.
  • the communication device 800 can be used to implement the functions of the second CU-CP involved in any of the above methods.
  • the communication device 800 may correspond to the second CU-CP.
  • the communication device 800 may be a second CU-CP and perform the steps performed by the second CU-CP in the above method embodiment.
  • the transceiver unit 810 may be used to support the communication device 800 to communicate, for example, by executing the method described in the above method embodiment.
  • the processing unit 820 may be used to support the communication device 800 to perform the processing actions in the above method embodiment, for example, perform the processing actions performed by the second CU-CP in the above method embodiment. Process actions.
  • the communication device may also include a storage unit 830 (not shown in Figure 8) for storing program codes and data of the communication device.
  • Transceiver unit 810 configured to receive context information from the first centralized unit control plane CU-CP.
  • the context information includes the context of the distributed unit DU and/or the first centralized unit user plane CU-UP.
  • the context information is used for the first centralized unit CU-CP.
  • the second CU-CP communicates with the DU and/or the first CU-UP.
  • the transceiver unit 810 is also used to receive the first message.
  • Processing unit 820 configured to communicate with the DU and/or the first CU-UP using the communication interface according to the first message.
  • the transceiver unit 810 may receive the context information from the first CU-CP through the access and mobility management function network element AMF.
  • the first CU-CP may send the context information to the AMF periodically or in real time.
  • the first message may include status value information from the first CU-CP.
  • the processing unit 820 communicates with the DU and/or the first CU-UP using the communication interface according to the first message, including: the processing unit 820 determines according to the status value information.
  • the first CU-CP is overloaded or faulty; the processing unit 820 determines to use the communication interface to communicate with the DU and/or the first CU-UP according to the first CU-CP overload or fault; the processing unit 820 uses the communication interface to communicate with the DU and/or The first CU-UP communicates.
  • the status value information may be information reflecting the first CU-CP load value. For example, if the load value information is greater than the first threshold, it indicates that the first CU-CP is overloaded.
  • the status value information may be information reflecting whether the first CU-CP is faulty. For example, if the status value information is an error value, it indicates that the first CU-CP is faulty. For another example, if the status value information is empty, it indicates that the first CU-CP is faulty.
  • the first message may include first request information from the DU and/or the first CU-UP.
  • the first request information is used to request to use the communication interface to communicate with the second CU-CP.
  • the processing unit 820 uses The communication interface communicates with the DU and/or the first CU-UP, including: the processing unit 820 uses the communication interface to communicate with the DU and/or the first CU-UP according to the first request information.
  • the first message includes first indication information from the first CU-CP.
  • the first indication information is used to indicate that the first CU-CP is overloaded.
  • the processing unit 820 uses the communication interface to communicate with the DU and/or the first CU-CP according to the first message.
  • the UP communicates, including: the processing unit 820 determines to use the communication interface to communicate with the DU and/or the first CU-UP according to the first indication information; the processing unit 820 uses the communication interface to communicate with the DU and/or the first CU-UP.
  • the first indication information may be sent after the first CU-CP determines that it is overloaded, or may be sent by other network elements or units after determining that the first CU-CP is overloaded and instructs the first CU-CP to send.
  • the first message includes second indication information from the first CU-CP.
  • the second indication information instructs the processing unit 820 to use the communication interface to communicate with the DU and/or the first CU-UP.
  • the processing unit 820 uses The communication interface communicates with the DU and/or the first CU-UP, including: the processing unit 820 uses the communication interface to communicate with the DU and/or the first CU-UP according to the second instruction information.
  • the second indication information may be sent by the instruction processing unit 820 using the communication interface to communicate with the DU and/or the first CU-UP after the first CU-CP determines that it is overloaded, or may be sent by other network elements.
  • the instruction processing unit 820 uses the communication interface to communicate with the DU and/or the first CU-UP and sends it to the first CU-CP for forwarding by the first CU-CP.
  • using the communication interface for communication may be establishing and using the communication interface for communication, or may be activating a standby communication interface.
  • the communication device 800 can be used to implement the functions of the first CU-CP involved in any of the above methods.
  • the communication device 800 may correspond to the first CU-CP.
  • the communication device 800 may be the first CU-CP and perform the steps performed by the first CU-CP in the above method embodiment.
  • the transceiver unit 810 may be used to support the communication device 800 to communicate, for example, perform the sending and/or receiving actions performed by the first CU-CP in the above method embodiment.
  • the processing unit 820 may be used to support the communication device 800 to perform the above method implementation.
  • the processing action in this example is, for example, executing the processing action performed by the first CU-CP in the above method embodiment.
  • the communication device may also include a storage unit 830 (not shown in Figure 8) for storing program codes and data of the communication device.
  • Transceiver unit 810 configured to send context information to the second centralized unit control plane CU-CP.
  • the context information includes the context of the distributed unit DU and the first centralized unit user plane CU-CP.
  • the context information is used for the second CU-CP.
  • the CP communicates with the DU and/or the first CU-UP.
  • Processing unit 820 used to determine the second CU-CP from the first CU-CP set, the first CU-CP set includes the first CU-CP, and any two CU-CPs in the first CU-CP set support each other as backup.
  • the transceiver unit 810 is also configured to send third indication information to the DU and/or the first CU-UP, where the third indication information is used to indicate the second CU-CP.
  • the transceiver unit 810 is also configured to send fourth indication information to the DU and/or the first CU-UP.
  • the fourth indication information is used to indicate the first CU-CP set.
  • the first CU-CP set includes the first CU-UP. CP and the second CU-CP, any two CU-CPs in the first CU-CP set support each other as backups.
  • the transceiver unit 810 is also used to receive feedback information from the DU or the first CU-UP and determine the second CU -CP, this feedback information is used to indicate the second CU-CP.
  • the transceiver unit 810 is also configured to send status value information of the first CU-CP to the second CU-CP, where the status value information is used to determine overload or failure of the first CU-CP.
  • the transceiver unit 810 is also configured to send first indication information to the second CU-CP, where the first indication information is used to indicate that the first CU-CP is overloaded.
  • the transceiver unit 810 is also configured to send second indication information to the second CU-CP, where the second indication information is used to instruct the second CU-CP to use the communication interface to communicate with the DU and/or the first CU-UP.
  • the processing unit 820 is further configured to determine that the first CU-CP is overloaded based on the load value being greater than the first threshold.
  • the transceiver unit 810 is also configured to send fifth indication information to the DU and/or the first CU-UP, where the fifth indication information is used to indicate that the first CU-CP is overloaded.
  • the transceiver unit 810 is also configured to send sixth instruction information to the DU and/or the first CU-UP.
  • the sixth instruction information is used to instruct the DU and/or the first CU-UP to use the communication interface to communicate with the second CU-CP. communication.
  • using the communication interface for communication may be establishing and using the communication interface for communication, or may be activating a standby communication interface.
  • the communication device 800 may be used to implement the functions of the DU and/or the first CU-UP involved in any of the above methods.
  • the communication device 800 may correspond to the DU and/or the first CU-UP.
  • the communication device 800 may be a DU and/or the first CU-UP, and perform the steps performed by the DU and/or the first CU-UP in the above method embodiment.
  • the transceiver unit 810 may be used to support the communication device 800 to communicate, for example, perform the sending and/or receiving actions performed by the DU and/or the first CU-UP in the above method embodiments
  • the processing unit 820 may be used to support the communication device 800 Execute the processing actions in the above method embodiment, for example, execute the processing actions performed by the DU and/or the first CU-UP in the above method embodiment.
  • the communication device may also include a storage unit 830 (not shown in Figure 8) for storing program codes and data of the communication device.
  • Transceiver unit 810 used to receive the second message.
  • Processing unit 820 used to determine the second CU-CP.
  • the transceiver unit 810 is also configured to send first request information to the second CU-CP according to the second message, where the first request information is used to request to use the communication interface to communicate with the second CU-CP.
  • the processing unit 820 is used to determine the second CU-CP, including: the transceiver unit 810 is used to receive the third indication information sent by the first CU-CP, and the processing unit 820 is used to determine the second CU-CP according to the third indication information. , the third indication information is used to indicate the second CU-CP.
  • the processing unit 820 is used to determine the second CU-CP, including: the transceiver unit 810 is used to receive the fourth indication information sent by the first CU-CP, and the processing unit 820 is used to determine the second CU from the first CU-CP set.
  • the fourth indication information is used to indicate the first CU-CP set
  • the first CU-CP set includes the first CU-CP
  • any two CU-CPs in the first CU-CP set support each other as Backup.
  • the transceiver unit 810 is also configured to send feedback information to the first CU-CP, where the feedback information is used to indicate the second CU-CP.
  • the second message includes status value information from the first CU-CP.
  • the transceiver unit 810 sends a first request letter to the second CU-CP according to the second message, including:
  • the processing unit 820 determines that the first CU-CP is overloaded or faulty based on the status value information of the first CU-CP; the processing unit 820 determines that the first CU-CP is overloaded or faulty based on the communication interface with the second CU-CP; the transceiver unit 810 Send the first request information to the second CU-CP.
  • the second message includes fifth indication information from the first CU-CP.
  • the fifth indication information is used to indicate that the first CU-CP is overloaded.
  • the transceiver unit 810 sends the first request information to the second CU-CP according to the third message.
  • the processing unit 820 determines to use the communication interface to communicate with the second CU-CP according to the fifth instruction information; the transceiver unit 810 sends the first request information to the second CU-CP.
  • the second message includes sixth indication information.
  • the sixth indication information is used to instruct the DU and/or the first CU-UP to communicate with the second CU-CP.
  • the transceiver unit 810 sends the second message to the second CU-CP according to the third message.
  • First request information including:
  • the transceiver unit 810 sends the first request information to the second CU-CP according to the sixth instruction information.
  • using the communication interface for communication may be establishing and using the communication interface for communication, or may be activating a standby communication interface.
  • FIG. 9 is an example of a signal transmission device 900 provided by an embodiment of the present application.
  • the device 900 includes: a transceiver 910, a processor 920 and a memory 930.
  • the memory 930 is used to store instructions.
  • the processor 920 is coupled to the memory 930 and is used to execute instructions stored in the memory to execute the method provided by the above embodiments of the present application.
  • the transceiver 910 in the device 900 may correspond to the transceiver unit 810 in the device 800
  • the processor 920 in the communication device 900 may correspond to the processing unit 820 in the communication device 800 .
  • memory 930 and processor 920 can be combined into one processing device, and the processor 920 is used to execute the program code stored in the memory 930 to implement the above functions.
  • the memory 930 can also be integrated in the processor 920 or independent of the processor 910 .
  • FIG. 10 is a schematic diagram of another example of a communication device according to an embodiment of the present application.
  • the communication device may be used to perform the method performed by the above-mentioned first CU-CP or second CU-CP or DU or first CU-UP. As shown in Figure 10, the communication device includes:
  • At least one input interface (Input(s)) 1010 At least one input interface (Input(s)) 1010, a logic circuit 1020, and at least one output interface (Output(s)) 1030.
  • the above-mentioned logic circuit can be a chip, or other integrated circuit that can implement the method of the present application.
  • the input interface 1010 is used to input or receive data; the output interface 1030 is used to output or send data; and the logic circuit 1020 is used to perform various possible methods as described above in FIG. 3 to FIG. 7 .
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code. .

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Abstract

本申请实施例提供了一种通信方法，该方法包括：第二集中式单元控制面(centralized unitcontrol plane,CU-CP)接收来自第一CU-CP的上下文信息，该上下文信息包括分布式单元(distributed unit,DU)和第一集中式单元用户面(centralized unituser plane,CU-UP)的上下文。该上下文信息用于第二CU-CP与DU和第一CU-UP通信。第二CU-CP接收第一消息并根据第一消息，与该DU和第一CU-UP使用通信接口进行通信。通过本申请提供的通信方法，可以为第一CU-CP提供备份CU-CP从而减少业务中断，提高系统的鲁棒性。

Description

一种通信方法和通信装置
本申请要求于2022年3月22日提交中国专利局、申请号为202210289197.X、申请名称为“一种通信方法和通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信领域，并且更具体的，涉及一种通信方法和通信装置。
背景技术
单个基站可以由集中式单元(centralized unit,CU)和分布式单元(distributed unit,DU)组成，多个DU共用一个CU，可以节省成本，易于网络扩展。更进一步的，集中式单元CU还可以划分为控制面(CU-control plane，CU-CP)和用户面(CU-user plane，CU-UP)。其中CU-CP负责控制面功能，CU-UP负责用户面功能，单个基站可以由单个CU-CP，多个CU-UP和多个DU组成，单个CU-CP可以连接至多个DU和多个CU-UP。
图1是CU-CP和CU-UP分离架构的示意图，如图1所示，CU-CP使用E1通信接口与CU-UP通信，CU-CP使用F1-C通信接口与DU通信，CU-UP使用F1-U通信接口与DU通信。
这种架构容易受到CU-CP单点故障的影响，CU-CP单点故障可能导致该基站的多个CU-UP和/或多个DU流量的中断和该基站服务的终端设备的掉线。
发明内容
本申请实施例提供了一种通信方法和通信装置，通过为第一CU-CP提供备份，使得第一CU-CP发生故障或过载等情况时，DU和/或第一CU-UP能够使用通信接口与作为备份的第二CU-CP进行通信，减少了业务的中断，提高了系统的鲁棒性。
第一方面，提供了一种通信方法，应用于第二CU-CP，或者执行第二CU-CP功能的芯片，或者，执行第二CU-CP功能的处理器，或者，执行第二CU-CP功能的软件或者逻辑模块等，本申请不限定。包括：接收来自第一CU-CP的上下文信息，上下文信息包括DU和/或第一CU-UP的上下文，上下文信息用于第二CU-CP与DU和/或第一CU-UP通信；接收第一消息；根据第一消息使用通信接口与DU和/或第一CU-UP进行通信。
需要说明的是，接收来自第一CU-CP的上下文信息可以在第二CU-CP使用通信接口与DU和/或第一CU-UP进行通信之前，也可以在第二CU-CP使用通信接口与DU和/或第一CU-UP进行通信之后。
本申请实施例提供的通信方法，通过为第一CU-CP提供备份，使得当第一CU-CP发生故障或过载等情况时，DU和/或第一CU-UP能够使用通信接口与作为备份的第二CU-CP进行通信，减少了业务的中断，提高了系统的鲁棒性。同时，第二CU-CP接收第一CU-CP 的上下文信息，使得第二CU-CP能够快速的使用该上下文信息为DU和/或第一CU-UP提供服务，降低了系统故障的时延。
结合第一方面，在第一方面的某些实现方式中，接收来自第一CU-CP的上下文信息可以是通过接入和移动性管理功能网元AMF接收来自第一CU-CP的上下文信息。
可选的，第一CU-CP可以周期性的或实时地将上下文信息发送给AMF，与DU和/或第一CU-UP使用通信接口进行通信时可以通过AMF获取该上下文信息。可选的，该上下文信息中包括第一CU-CP的标识信息。获取该上下文信息时，可以向AMF发送该第一CU-CP的标识信息，使得AMF可以将第一CU-CP的上下文信息发送给第二CU-CP。获取该上下文信息时，也可以向AMF发送该第一CU-CP服务的某一个终端设备的标识信息，使得AMF可以将该终端设备相关的上下文信息发送给第二CU-CP。
将上下文信息发送给AMF，当第二CU-CP为DU和/或第一CU-UP服务时，从AMF获取上下文信息，保证了在第二CU-CP不作为第一CU-CP的备份为DU和/或第一CU-UP服务时，第二CU-CP的工作不受影响，降低了第二CU-CP接收上下文信息的开销。
结合第一方面，在第一方面的某些实现方式中，第一消息包括来自第一CU-CP的状态值信息。示例性的有益效果包括：通过该状态值信息，可以及时判断第一CU-CP是否出现故障，从而减少了业务的中断，提高了系统的鲁棒性。
结合第一方面，在第一方面的某些实现方式中，根据第一消息使用通信接口与DU和/或第一CU-UP进行通信，包括：根据状态值信息确定第一CU-CP过载或故障；根据第一CU-CP过载或故障，确定使用通信接口与DU和/或第一CU-UP进行通信；第二CU-CP使用通信接口与DU和/或第一CU-UP进行通信。
可选的，状态值信息可以为反映第一CU-CP负载值的信息。例如，该负载值信息大于第一阈值表示第一CU-CP过载。
可选的，状态值信息可以为反映第一CU-CP是否故障的信息。例如，状态值信息为错误值表示第一CU-CP故障，又例如，状态值信息为空表示第一CU-CP故障。
结合第一方面，在第一方面的某些实现方式中，第一消息包括来自DU和/或第一CU-UP的第一请求信息，该第一请求信息用于请求使用通信接口与第二CU-CP进行通信。
结合第一方面，在第一方面的某些实现方式中，第一消息包括来自第一CU-CP的第一指示信息，第一指示信息用于指示第一CU-CP过载。可以根据第一CU-CP过载确定使用通信接口与DU和/或第一CU-CP进行通信。
需要说明的是，该第一指示信息可以为第一CU-CP确定自身过载以后发送的，也可以是其他网元或单元确定第一CU-CP过载以后指示第一CU-CP发送的。
结合第一方面，在第一方面的某些实现方式中，第一消息包括来自第一CU-CP的第二指示信息，该第二指示信息指示使用通信接口与DU和/或第一CU-UP进行通信。
需要说明的是，该第二指示信息可以为第一CU-CP确定自身过载以后确定指示第二CU-CP使用通信接口与DU和/或第一CU-UP进行通信发送的，也可以是其他网元或单元确定第一CU-CP过载以后确定指示第二CU-CP使用通信接口与DU和/或第一CU-UP进行通信发送给第一CU-CP而由第一CU-CP转发的。
需要说明的是，上述第一方面的各实现方式中，使用通信接口进行通信可以为建立并使用通信接口进行通信，也可以为激活待机的通信接口并使用通信接口进行通信。
需要说明的是，该待机的通信接口为提前建立的，使用该通信接口的一方通过发送一条待机指示信息使该通信接口处于待机状态或冷备份状态。
第二方面，提供了一种通信方法，应用于第一CU-CP，或者执行第一CU-CP功能的芯片，或者，执行第一CU-CP功能的处理器，或者，执行第一CU-CP功能的软件或者逻辑模块等，本申请不限定。包括：向第二CU-CP发送上下文信息，上下文信息包括DU和/或第一CU-UP的上下文，上下文信息用于第二CU-CP与DU和/或第一CU-UP通信。
本申请实施例提供的通信方法，通过为第一CU-CP提供备份，使得当第一CU-CP发生故障或过载等情况时，DU和/或第一CU-UP能够使用通信接口与作为备份的第二CU-CP进行通信，减少了业务的中断，提高了系统的鲁棒性。同时，第二CU-CP接收第一CU-CP的上下文信息，使得第二CU-CP能够快速的根据上下文信息为DU和/或第一CU-UP提供服务，降低了系统故障的时延。
结合第二方面，在第二方面的某些实现方式中，该第二CU-CP是第一CU-CP从第一CU-CP集合中确定的，该第一CU-CP集合也包括第一CU-CP，该第一CU-CP集合中的任意两个CU-CP支持作为互相的备份；该第一CU-CP向DU和/或第一CU-UP发送第三指示信息，该第三指示信息用于指示第二CU-CP，以使得DU和/或第一CU-UP确定作为备份的第二CU-CP。
应理解，该第一CU-CP集合可以理解为作为第一CU-CP的备份的CU-CP的集合，该集合中包括的CU-CP的性质或者配置可以为类似的。
结合第二方面，在第二方面的某些实现方式中，向DU和/或第一CU-UP发送第四指示信息，该第四指示信息用于指示第一CU-CP集合，该第一CU-CP集合包括第一CU-CP和第二CU-CP，第一CU-CP集合中任意两个CU-CP支持作为互相的备份；接收来自DU和/或第一CU-UP的反馈信息，该反馈信息用于指示第二CU-CP。第一CU-CP接收DU和/或第一CU-UP的反馈信息，确定第二CU-CP，以便后续与第二CU-CP交互。
应理解，在该实现方式中，第一CU-CP向DU和/或第一CU-UP指示第一CU-CP集合，使得DU和/或第一CU-UP可以从第一CU-CP集合中确定第二CU-CP作为备份。
结合第二方面，在第二方面的某些实现方式中，向第二CU-CP发送第一CU-CP的状态值信息，该状态值信息用于第一CU-CP过载或者故障的确定。
结合第二方面，在第二方面的某些实现方式中，向DU和/或第一CU-UP发送第一CU-CP的状态值信息，该状态值信息用于第一CU-CP过载或者故障的确定。
可选的，状态值信息可以为反映第一CU-CP负载值的信息。例如，该负载值信息大于第一阈值表示第一CU-CP过载。
可选的，状态值信息可以为反映第一CU-CP是否故障的信息。例如，状态值信息为错误值表示第一CU-CP故障，又例如，状态值信息为空表示第一CU-CP故障。
结合第二方面，在第二方面的某些实现方式中，向第二CU-CP发送第一指示信息，该第一指示信息用于指示第一CU-CP过载。
结合第二方面，在第二方面的某些实现方式中，向DU和/或第一CU-UP发送第五指示信息，该第五指示信息用于指示第一CU-CP过载。
需要说明的是，该第一指示信息或者第五指示信息可以为第一CU-CP根据自身负载值大于第一阈值确定自身过载以后发送的，该第一指示信息或者第五指示信息也可以为第 一CU-CP接收其他网元或单元的指示信息指示第一CU-CP过载以后发送的。例如，其他网元或单元可以为AMF。
结合第二方面，在第二方面的某些实现方式中，向第二CU-CP发送第二指示信息，该第二指示信息用于指示第二CU-CP使用通信接口与DU和/或第一CU-UP进行通信。
结合第二方面，在第二方面的某些实现方式中，第一CU-CP向DU和/或第一CU-UP发送第六指示信息，该第六指示信息用于指示DU和/或第一CU-UP使用通信接口与第二CU-CP进行通信。
需要说明的是，该第二指示信息或第六指示信息可以为第一CU-CP根据自身负载值大于第一阈值确定自身过载以后确定指示第二CU-CP使用通信接口与DU和/或第一CU-UP进行通信或指示DU和/或第一CU-UP使用通信接口与第二CU-CP进行通信以后发送的，该第二指示信息或第六指示信息也可以是其他网元或单元根据第一CU-CP负载值大于第一阈值确定第一CU-CP过载以后确定指示第二CU-CP使用通信接口与DU和/或第一CU-UP进行通信或指示DU和/或第一CU-UP使用通信接口与第二CU-CP进行通信以后发送给第一CU-CP而由第一CU-CP转发的。
需要说明的是，上述第二方面的各实现方式中，使用通信接口进行通信可以为建立并使用通信接口进行通信，也可以为激活待机的通信接口并使用通信接口进行通信。
需要说明的是，该待机的通信接口为提前建立的，使用通信接口的一方通过发送一条待机指示信息使该通信接口处于待机状态或冷备份状态。
第三方面，提供了一种通信方法，应用于DU或第一CU-UP，或者执行DU或第一CU-UP功能的芯片，或者，执行DU或第一CU-UP功能的处理器，或者，执行DU或第一CU-UP功能的软件或者逻辑模块等，本申请不限定。包括：确定第二CU-CP；接收第二消息；根据第二消息，向第二CU-CP发送第一请求信息，该第一请求信息用于请求使用通信接口与第二CU-CP进行通信。或者，包括：确定第二CU-CP；第一CU-UP接收第二消息；根据第二消息，向第二CU-CP发送第一请求信息，该第一请求信息用于请求使用通信接口与第二CU-CP进行通信。
本申请实施例提供的通信方法，通过为第一CU-CP提供备份，使得当第一CU-CP发生故障或过载等情况时，DU和/或第一CU-UP能够使用通信接口与作为备份的第二CU-CP进行通信，减少了业务的中断，提高了系统的鲁棒性。
结合第三方面，在第三方面的某些实现方式中，确定第二CU-CP，包括：接收第一CU-CP的第三指示信息，根据第三指示信息确定第二CU-CP，该第三指示信息用于指示第二CU-CP。或者，第一CU-UP确定第二CU-CP，包括：接收第一CU-CP的第三指示信息，根据第三指示信息确定第二CU-CP，该第三指示信息用于指示第二CU-CP。
结合第三方面，在第三方面的某些实现方式中，确定第二CU-CP，包括：接收第一CU-CP发送的第四指示信息，从第一CU-CP集合中确定第二CU-CP，该第四指示信息用于指示第一CU-CP集合，该第一CU-CP集合中包括第一CU-CP，第一CU-CP集合中任意两个CU-CP支持作为互相的备份。或者，确定第二CU-CP，包括：接收第一CU-CP发送的第四指示信息，从第一CU-CP集合中确定第二CU-CP，该第四指示信息用于指示第一CU-CP集合，该第一CU-CP集合中包括第一CU-CP，第一CU-CP集合中任意两个CU-CP支持作为互相的备份。
结合第三方面，在第三方面的某些实现方式中，从第一CU-CP集合中确定第二CU-CP之后，向第一CU-CP发送反馈信息，该反馈信息用于指示第二CU-CP。或者，从第一CU-CP集合中确定第二CU-CP之后，向第一CU-CP发送反馈信息，该反馈信息用于指示第二CU-CP。
结合第三方面，在第三方面的某些实现方式中，该第二消息包括来自第一CU-CP的状态值信息。
结合第三方面，在第三方面的某些实现方式中，根据第二消息向第二CU-CP发送第一请求信息，包括：根据第一CU-CP的状态值信息确定第一CU-CP过载或故障；根据第一CU-CP过载或故障确定与第二CU-CP使用通信接口进行通信；向第二CU-CP发送第一请求信息。或者，根据第二消息向第二CU-CP发送第一请求信息，包括：根据第一CU-CP的状态值信息确定第一CU-CP过载或故障；根据第一CU-CP过载或故障确定与第二CU-CP使用通信接口进行通信；第一CU-UP向第二CU-CP发送第一请求信息。
可选的，状态值信息可以为反映第一CU-CP负载值的信息。例如，该负载值信息大于第一阈值表示第一CU-CP过载。
可选的，状态值信息可以为反映第一CU-CP是否故障的信息。例如，状态值信息为错误值表示第一CU-CP故障，又例如，状态值信息为空表示第一CU-CP故障。
结合第三方面，在第三方面的某些实现方式中，该第二消息包括来自第一CU-CP的第五指示信息，该第五指示信息用于指示第一CU-CP过载。
结合第三方面，在第三方面的某些实现方式中，该第二消息包括来自第一CU-CP的第六指示信息，该第六指示信息用于指示DU使用通信接口与第二CU-CP进行通信。或者，第六指示信息用于指示第一CU-UP使用通信接口与第二CU-CP进行通信。
其他网元或单元确定第一CU-CP过载或故障以后也可以指示DU和/或第一CU-UP使用通信接口与第一CU-CP进行通信。
需要说明的是，上述第三方面的各实现方式中，使用通信接口进行通信可以为建立并使用通信接口进行通信，也可以为激活待机的通信接口并使用通信接口进行通信。
需要说明的是，该待机的通信接口为提前建立的，使用该通信接口的一方通过发送一条待机指示信息使该通信接口处于待机状态或冷备份状态。
第四方面，提供了一种通信装置，包括用于执行上述第一方面及其各实现方式中的通信方法的各步骤的单元。
在一种设计中，该通信装置为通信芯片，该通信芯片可以包括用于发送信息或数据的输入电路或接口，以及用于接收信息或数据的输出电路或接口。
在另一种设计中，所述通信装置为通信设备(例如，第二CU-CP等)，通信芯片可以包括用于发送信息的发射机，以及用于接收信息或数据的接收机。
第五方面，提供了一种通信装置，包括用于执行上述第二方面及其各实现方式中的通信方法的各步骤的单元。
在一种设计中，该通信装置为通信芯片，该通信芯片可以包括用于发送信息或数据的输入电路或接口，以及用于接收信息或数据的输出电路或接口。
在另一种设计中，所述通信装置为通信设备(例如，第一CU-CP等)，通信芯片可以包括用于发送信息的发射机，以及用于接收信息或数据的接收机。
第六方面，提供了一种通信装置，包括用于执行上述第三方面及其各实现方式中的通信方法的各步骤的单元。
在一种设计中，该通信装置为通信芯片，该通信芯片可以包括用于发送信息或数据的输入电路或接口，以及用于接收信息或数据的输出电路或接口。
在另一种设计中，所述通信装置为通信设备(例如，DU或第一CU-UP等)，通信芯片可以包括用于发送信息的发射机，以及用于接收信息或数据的接收机。
第七方面，提供了一种通信设备，包括，处理器，存储器，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得该通信设备执行上述第一方面及其各实现方式中的通信方法。
可选地，所述处理器为一个或多个，所述存储器为一个或多个。
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。
可选的，该通信设备还包括，发射机(发射器)和接收机(接收器)。
第八方面，提供了一种通信设备，包括，处理器，存储器，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得该通信设备执行上述第二方面及其各实现方式中的通信方法。
可选地，所述处理器为一个或多个，所述存储器为一个或多个。
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。
可选的，该通信设备还包括，发射机(发射器)和接收机(接收器)。
第九方面，提供了一种通信设备，包括，处理器，存储器，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得该通信设备执行上述第三方面及其各实现方式中的通信方法。
可选地，所述处理器为一个或多个，所述存储器为一个或多个。
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。
可选的，该通信设备还包括，发射机(发射器)和接收机(接收器)。
第十方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当所述计算机程序被运行时，使得计算机执行上述第一方面至第三方面的任一方面及其各实现方式中的通信方法。
第十一方面，提供了一种通信系统，该系统包括：至少一个用于执行第一方面及其各实现方式的方法的装置。
可选的，该通信系统还包括至少一个用于执行第二方面及其各实现方式的方法的装置。
可选的，该通信系统还包括至少一个用于执行第三方面及其各实现方式的方法的装置。
第十二方面，提供了一种通信系统，该系统包括：至少一个用于执行第二方面及其各实现方式的方法的装置。
可选的，该通信系统还包括至少一个用于执行第一方面及其各实现方式的方法的装置。
可选的，该通信系统还包括至少一个用于执行第三方面及其各实现方式的方法的装置。
第十三方面，提供了一种通信系统，该系统包括：至少一个用于执行第三方面及其各 实现方式的方法的装置。
可选的，该通信系统还包括至少一个用于执行第一方面及其各实现方式的方法的装置。
可选的，该通信系统还包括至少一个用于执行第二方面及其各实现方式的方法的装置。
第十四方面，提供了一种芯片系统，包括存储器和处理器，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得安装有该芯片系统的通信设备执行上述任一方面及其各实现方式中的通信方法。
其中，该芯片系统可以包括用于发送信息或数据的输入电路或者接口，以及用于接收信息或数据的输出电路或者接口。
附图说明
图1是CU-CP和CU-UP分离架构的示意图。
图2是本申请实施例涉及的系统架构的示意图。
图3是本申请实施例提供的通信方法的一例的示意图。
图4是本申请提供的第一CU-CP从第一CU-CP集合中确定第二CU-CP的一个实施例的示意图。
图5是本申请实施例提供的通信方法的一个示例。
图6是本申请实施例提供的通信方法的另一个示例。
图7是本申请实施例提供的通信方法的另一例的示意图。
图8是本申请实施例提供的通信装置的一例的示意图。
图9是本申请实施例提供的通信装置的另一例的示意图。
图10是本申请实施例提供的通信装置的另一例的示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(long tTerm evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、第五代(5th generation，5G)系统或新无线(new radio，NR)等。
本申请实施例中的终端设备可以指用户设备、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local Loop，WLL)站、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网络中的终端设备或者演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备可以是LTE系统中的演进型基站(evolutional nodeB，eNB或eNodeB)，还可以是云无线接入网 络(cloud radio access network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及5G网络中的网络设备或者演进的PLMN网络中的网络设备等，本申请实施例并不限定。
本申请中术语“和/或”，仅仅是一种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，其中A，B可以是单数或者复数。另外，本文中字符“/”，表示前后关联对象是一种“或”的关系。
图2所示是本申请实施例涉及的系统架构的示意图。如图2的(a)所示，为CU-CP和CU-UP的分离架构，单个DU可以同时与多个CU-CP使用F1-C接口进行通信，单个CU-UP可以同时与多个CU-CP使用E1接口进行通信。如图2的(b)所示，为CU和DU的分离架构，单个DU可以同时与多个CU通过F1接口进行通信。
图3是本申请实施例提供的通信方法的一例的示意图，如图3所示，该方法300包括：
S310，接收第一消息，根据第一消息与DU和/或第一CU-UP使用通信接口通信。
本申请实施例应用于第二CU-CP，或者执行第二CU-CP功能的芯片，或者，执行第二CU-CP功能的处理器，或者，执行第二CU-CP功能的软件或者逻辑模块等，本申请不限定。需要说明的是，第一CU-CP、第二CU-CP、DU、第一CU-UP之间以及与核心网某些网元之间进行通信需要通过通信接口。
在本申请实施例提供的方法中，两个网元或单元通过通信接口进行通信之前，需要先进行通信接口的建立，或者，激活通信接口。
一方面，使用通信接口进行通信可以包括建立并使用通信接口进行通信，换句话说，当有通信需求时，先建立通信接口，再使用通信接口进行通信。
另一方面，使用通信接口进行通信可以包括激活待机的通信接口并使用该通信接口进行通信。示例性的，该待机的通信接口为提前建立的。具体的，在有通信需求之前，预先建立通信接口并通过待机指示信息使得该通信接口处于待机状态，当有通信需求时，先激活待机的通信接口，再使用该通信接口进行通信。
示例性的，使用通信接口通信的两方可以为A和B，该待机的通信接口可以由A请求建立，由B激活，该待机的通信接口也可以由A请求建立，由A激活。
预先建立通信接口并使其处于待机状态，当有通信需求时，激活待机的通信接口并使用通信接口进行通信，相较于当有通信需求时建立通信接口并使用通信接口进行通信能够使得DU和/或第一CU-UP与第二CU-CP快速使用通信接口进行通信，继续为DU和/或第一CU-UP下的终端设备提供服务，减少终端设备业务的中断，提高网络的鲁棒性。
作为一个示例，CU-CP和DU之间使用通信接口进行通信的过程可以包括F1-C通信接口建立过程：CU-CP向DU发送F1-C通信接口建立请求信息，DU接收该请求信息并向CU-CP发送对应于该请求信息的响应消息。CU-CP和DU之间可以通过该F1-C接口进行通信。需要说明的是，该F1-C通信接口建立请求信息也可以由DU发送给CU-CP，响应消息进行适应性修改，本申请实施例对通信接口建立请求的发起方不做特别限定。
作为另一个示例，该F1-C通信接口建立过程可以提前完成，然后CU-CP向DU发送待机指示，指示该F1-C通信接口处于待机状态。CU-CP和DU之间使用通信接口进行通信的过程可以包括激活F1-C通信接口过程：CU-CP向DU发送激活指示，指示该F1-C 通信接口处于激活状态。CU-CP和DU之间可以通过该激活后的F1-C接口进行通信。
类似的，CU-CP和CU-UP使用E1通信接口进行通信的过程、CU-UP和DU使用F1-U通信接口进行通信的过程以及CU-CP与核心网之间使用通信接口进行通信的过程等与上述示例的过程类似，可以参照上述过程，不再赘述。
需要说明的是，在本申请实施例提供的方法中，CU-CP、CU-UP等可以为执行用户面或控制面功能的硬件设备，CU-CP、CU-UP等也可以为执行用户面或控制面功能的软件模块，也就是说CU-CP、CU-UP可以属于同一个硬件设备，本申请实施例对此不做限定。
示例性的，该第二CU-CP属于第一CU-CP集合。第一CU-CP集合中的任意两个CU-CP支持作为互相的备份。
具体的，第一CU-CP集合包括第一CU-CP和第二CU-CP。该第二CU-CP可以理解为第一CU-CP的备份，该第一CU-CP可以理解为为DU和/或第一CU-UP提供服务的源CU-CP。
可选的，第一CU-CP集合中包括的除第一CU-CP以外的其他CU-CP可以只作为第一CU-CP的备份，或者，第一CU-CP集合中除第一CU-CP以外的其他CU-CP不会服务除第一CU-CP下的终端设备以外的其他终端设备。
该第一CU-CP下的终端设备为第一CU-CP所属的基站服务的终端设备。该第一CU-CP下的终端设备也可以为该第一CU-CP服务的所有DU和/或第一CU-UP下的终端设备，即DU和/或第一CU-UP为终端设备服务，第一CU-CP为DU和/或第一CU-UP服务。
若第一CU-CP集合中包括的除第一CU-CP以外的其他CU-CP只作为第一CU-CP的备份，第一CU-CP集合中除第一CU-CP以外的其他CU-CP的配置信息可以与第一CU-CP的配置信息一致。
可选的，第一CU-CP集合中包括的除第一CU-CP以外的其他CU-CP可以不只作为第一CU-CP的备份，或者，第一CU-CP集合中除第一CU-CP以外的其他CU-CP在作为第一CU-CP的备份之前，还可以服务除第一CU-CP下的终端设备以外的其他终端设备。
若第一CU-CP集合中包括的除第一CU-CP以外的其他CU-CP不只作为第一CU-CP的备份，第一CU-CP集合中除第一CU-CP以外的其他CU-CP的配置信息可以与第一CU-CP的配置信息不一致。
具体的，上述第一CU-CP集合中的多个CU-CP的配置信息可以包括全球小区标识(cell global identifier,CGI)、用户面和控制面的数据的加密和完整性保护的相关配置(例如，KRRCint(RRC信令完整性保护密钥)，KRRCenc(RRC信令加密密钥)，KUpint(用户面完整性保护密钥)，KUPenc(用户面加密密钥))中的一个或多个。
可选的，第一CU-CP集合中的多个CU-CP可以共享用户面和控制面数据的加密和完整性保护密钥。
应理解，多个网元或单元(例如，第一CU-CP、第一CU-UP、DU、AMF、操作维护管理网元(operation administration and maintenance，OAM))中的一个可以从第一CU-CP集合中确定第二CU-CP。即，备份CU-CP的确定可以由多个网元或单元等中的一个完成。
例如，该第二CU-CP可以是核心网的OAM从第一CU-CP集合中确定，预配置给第一CU-CP的。再例如，该第二CU-CP可以是核心网的OAM从第一CU-CP集合中确定， 通过第一CU-CP预配置给DU或者第一CU-UP的。
从第一CU-CP集合中确定第二CU-CP之前，多个网元或单元(例如，第一CU-CP、第一CU-UP、DU、AMF、OAM)中的一个可以获取或自行配置第一CU-CP集合的相关信息。
具体的，该第一CU-CP集合的相关信息可以是OAM或者AMF预配置给第一CU-CP的。或者，该第一CU-CP集合的相关信息可以是第一CU-CP发送给AMF，DU或者第一CU-UP的。
需要说明的是，该第一CU-CP集合的相关信息包括但不限于以下至少一项：
(1)第一CU-CP集合的ID(可以为CU-CP pool/set ID)；
(2)第一CU-CP集合中包括的CU-CP的名称信息，或者，具体的，CU-CP名称列表信息；
(3)第一CU-CP集合中包括的CU-CP的互联网协议(internet protocol，IP)地址信息，或者，更具体的，CU-CP的IP地址列表信息；
(4)第一CU-CP集合中包括的CU-CP的标识信息，或者，具体的，CU-CP的标识列表信息；
(5)第一CU-CP集合中包括的CU-CP的优先级信息。
需要说明的是，当由不同的网元或单元确定第二CU-CP时，需要其他网元或单元的配合，不同的网元或单元确定第二CU-CP以后，也可以向其他网元或单元指示该第二CU-CP，以便于其他网元或单元与第二CU-CP的后续交互。
例如，当由第一CU-CP从第一CU-CP集合中确定第二CU-CP时，第一CU-CP可以从AMF获取第一CU-CP集合的相关信息，也可以通过OAM的预配置获得第一CU-CP集合的相关信息。第一CU-CP获取第一CU-CP集合的相关信息后，可以根据第一CU-CP集合的相关信息从第一CU-CP集合中确定第二CU-CP。
第一CU-CP确定第二CU-CP以后，第一CU-CP可以向DU和/或第一CU-UP发送第三指示信息，该第三指示信息用于指示第二CU-CP，以便于DU和/或第一CU-UP与第二CU-CP的后续交互。
具体的，该第三指示信息用于指示DU和/或第一CU-UP该第二CU-CP为第一CU-CP的备份。示例性的，该第三指示信息用于指示第二CU-CP的形式可以包括指示第二CU-CP的标识，或者，指示第二CU-CP的IP地址信息，或者，指示第二CU-CP的名称信息等。
再例如，当由DU和/或第一CU-UP确定第二CU-CP时，第一CU-CP可以从AMF获取第一CU-CP集合的相关信息，也可以通过OAM的预配置获得第一CU-CP集合的相关信息。第一CU-CP可以向DU和/或第一CU-UP发送第四指示信息，该第四指示信息用于指示第一CU-CP集合。具体的，该第四指示信息用于指示该第一CU-CP集合的相关信息，以便于DU和/或第一CU-CP从第一CU-CP集合中确定第二CU-CP。DU和/或第一CU-UP获取第一CU-CP集合的相关信息后，可以根据第一CU-CP集合的相关信息从第一CU-CP集合中确定第二CU-CP。
DU和/或第一CU-UP确定第二CU-CP以后，可以向第一CU-CP发送反馈信息，该反馈信息用于指示第二CU-CP，以便于第一CU-CP与第二CU-CP的后续交互。
又例如，当由AMF从第一CU-CP集合中确定第二CU-CP时，AMF可以自行配置第 一CU-CP集合的相关信息并根据确定第二CU-CP，AMF也可以从第一CU-CP获取OAM预配置的第一CU-CP集合的相关信息并根据第一CU-CP集合的相关信息确定第二CU-CP。
在由上述不同的网元或单元根据第一CU-CP集合的相关信息确定该第二CU-CP时，可以具体根据第一CU-CP集合的相关信息中的CU-CP的优先级信息确定第一CU-CP集合中优先级最高的CU-CP作为第二CU-CP。当优先级最高的CU-CP无法作为第二CU-CP提供服务时，可以选择优先级第二高的CU-CP作为第二CU-CP，以此类推确定第二CU-CP。
可选的，在上述不同的网元或单元根据第一CU-CP集合的相关信息确定该第二CU-CP时，可以通过向第一CU-CP集合中的一个或多个CU-CP发送与DU和/或第一CU-UP相关的备份服务请求，以便于确定可以为DU和/或第一CU-UP服务的CU-CP作为第二CU-CP。
示例性的，该备份服务请求中可以包括DU和/或第一CU-UP的相关信息，例如DU或者第一CU-UP的标识信息，或者，DU下的小区列表信息，或者，与DU和/或第一CU-UP相关的资源配置等信息。第一CU-CP集合中的一个或多个CU-CP可以根据该备份服务请求以及自身的负载等信息，确定是否可以作为该第一CU-CP的备份为DU和/或第一CU-UP服务。当第一CU-CP集合中的一个或多个CU-CP根据备份服务请求以及自身的负载等信息确定可以为DU和/或第一CU-UP服务时，可以向上述不同网元或单元发送确认信息，确认可以作为第一CU-CP的备份，或者，确认可以为DU和/或第一CU-UP服务。应理解，该过程可以理解为切换准备流程。
上述不同的网元或单元可以根据确认信息从该一个或多个CU-CP中选择一个CU-CP作为第二CU-CP。
图4是本申请提供的第一CU-CP从第一CU-CP集合中确定第二CU-CP并通知DU和/或第一CU-UP的一种实施例的示意图。如图4所示，方法400是便于读者理解而列举的上述方法步骤的一种情况。该流程400包括：
需要说明的是，在图示中以第一CU-CP或第二CU-CP或者DU或者第一CU-UP为执行主体，在本申请实施例中，例如：第二CU-CP，执行主体可以为第二CU-CP，或者执行第二CU-CP功能的芯片，或者，执行第二CU-CP功能的处理器，或者，执行第二CU-CP功能的软件或者逻辑模块等，本申请不限定。
S410，第一CU-CP从OAM或AMF获取第一CU-CP集合的相关信息。
S420，第一CU-CP从第一CU-CP集合中确定第二CU-CP。
具体的，第一CU-CP根据第一CU-CP集合的相关信息确定从第一CU-CP集合中确定第二CU-CP。
可选的，S420中第一CU-CP从第一CU-CP集合中确定第二CU-CP为上述根据优先级信息确定第二CU-CP。
可选的，S420中第一CU-CP从第一CU-CP集合中确定第二CU-CP可以包括上述第一CU-CP向第一CU-CP集合中的一个或多个CU-CP发送备份服务请求等流程。
S430，第一CU-CP向DU和/或第一CU-UP发送第三指示信息，该第三指示信息用于指示第二CU-CP。
该第一CU-CP确定第二CU-CP并通知DU和/或第一CU-UP的流程可以是DU和/或第一CU-CP有使用通信接口与第二CU-CP建立通信的需求之前完成的。
可选的，DU和/或第一CU-UP接收该第三指示信息以后，可以提前向第二CU-CP发送通信接口建立请求，当通信接口建立以后，DU和/或第一CU-UP可以向第二CU-CP发送待机指示，使得该通信接口处于待机状态。
应理解，该待机的通信接口的激活可以由DU和/或第一CU-UP完成，也可以由第二CU-CP完成。
可选的，DU和/或第一CU-UP接收该第三指示信息以后，可以在有使用通信接口与第二CU-CP建立通信的需求后，向第二CU-CP发送通信接口建立请求，并在通信接口建立以后，使用通信接口与第二CU-CP进行通信。
该第一CU-CP确定第二CU-CP并通知DU和/或第一CU-UP的流程可以是DU和/或第一CU-CP有使用通信接口与第二CU-CP建立通信的需求时完成的。
DU和/或第一CU-UP接收该第三指示信息以后，向第二CU-CP发送通信接口建立请求，并在通信接口建立以后，使用通信接口与第二CU-CP进行通信。
S310中，该第二CU-CP接收的第一消息可以包括来自第一CU-CP的状态值信息。
该状态值信息可以为第一CU-CP的负载值信息。具体的，第二CU-CP可以根据该负载值信息与第一阈值的关系，确定第一CU-CP是否过载。若该负载值信息大于或等于第一阈值，第二CU-CP可以确定第一CU-CP过载。当第二CU-CP根据负载值信息确定第一CU-CP过载时，第二CU-CP可以使用通信接口与DU和/或第一CU-UP进行通信。
应理解，在第一CU-CP过载的情况下，第一CU-CP仍然可以使用通信接口与其他网元或单元进行通信。
该状态值信息可以为判断第一CU-CP是否故障的状态值信息。当该状态值信息异常时，第二CU-CP确定第一CU-CP故障。当第二CU-CP确定第一CU-CP故障时，第二CU-CP可以使用通信接口与DU和/或第一CU-UP进行通信。
例如，该状态值信息异常可以为第二CU-CP在第二周期内或预先设定的定时器到期后未接收到来自第一CU-CP的状态值信息。再例如，该状态值异常可以为该状态值为错误值。
在另一个实施例中，第二CU-CP可以通过检测第二CU-CP与第一CU-CP之间的通信接口的传输层状态确定第一CU-CP是否故障，而不需要接收状态值信息。可选的，当该通信接口的传输层状态异常时，第二CU-CP确定第一CU-CP故障。当第二CU-CP确定第一CU-CP故障时，可以使用通信接口与DU和/或第一CU-UP进行通信。
S310中，该第二CU-CP接收的第一消息包括来自第一CU-CP的第一指示信息，该第一指示信息用于指示第一CU-CP过载。可选的，第二CU-CP可以根据该第一指示信息与DU和/或第一CU-UP使用通信接口进行通信。
第一CU-CP在发送该第一指示信息之前，可以先确定自身过载。
可选的，该第一CU-CP确定自身过载可以为：第一CU-CP根据自身的负载值信息大于或等于第一阈值确定自身过载。
S310中，该第二CU-CP接收的第一消息包括来自AMF的第七指示信息，该第七指示信息可以指示第一CU-CP过载或故障，或者，该第七指示信息可以指示第二CU-CP与DU和/或第一CU-UP使用通信接口进行通信。
AMF发送该第七指示信息之前，可以先确定第一CU-CP过载或故障。
具体的，AMF可以从第一CU-CP周期性的或实时的获取第一CU-CP的状态值信息，该状态值信息可以反映第一CU-CP是否过载或者故障，AMF根据对该状态值信息的判断，确定第一CU-CP是否过载或故障，若AMF确定第一CU-CP过载或故障，AMF向第二CU-CP发送第七指示信息。
由第一CU-CP进行是否过载的判断，相较于由AMF等其他网元或单元进行第一CU-CP是否过载的判断，能够降低传输负载值信息以及指示信息所带来的信令开销，并且，由第一CU-CP对自身进行判断，能够减少丢包等带来的判断错误，提高判断结果的稳定性及准确性。
S310中，该第二CU-CP接收的第一消息包括来自第一CU-CP的第二指示信息，该第二指示信息用于指示第二CU-CP使用通信接口与DU和/或第一CU-UP进行通信。
需要说明的是，第一CU-CP发送第二指示信息的原因可能为第一CU-CP确定第一CU-CP过载，也可能为第一CU-CP接收AMF，DU，或第一CU-UP发送的指示信息。可选的，该指示信息指示第一CU-CP进行DU和/或第一CU-UP的迁移，即指示DU和/或第一CU-UP使用通信接口与备份的第二CU-CP进行通信。需要说明的是，AMF，DU，或第一CU-UP发送该指示信息的原因可以为AMF，DU，第一CU-UP确定第一CU-CP过载，也可以为其他原因，本申请实施例对此不做限定。
S310中，该第二CU-CP接收的第一消息包括来自DU和/或第一CU-UP的第一请求信息，该第一请求信息用于请求使用通信接口与第二CU-CP进行通信。该第一请求信息可以为通信接口建立请求，或者通信接口的激活请求。
本申请实施例还可以包括：DU和/或第一CU-UP接收第二消息，根据第二消息向第二CU-CP发送第一请求信息。
其中，DU和/或第一CU-UP接收的第二消息可以包括来自第一CU-CP的状态值信息。关于该状态值信息的描述与上述类似，在此不再赘述。具体的，DU和/或第一CU-UP可以根据该状态值信息确定第一CU-CP过载或故障，根据第一CU-CP过载或故障确定使用通信接口与第二CU-CP进行通信，从而向第二CU-CP发送第一请求信息。
其中，DU和/或第一CU-UP接收的第二消息包括来自第一CU-CP的第五指示信息，该第五指示信息用于指示第一CU-CP过载。DU和/或第一CU-UP根据第五指示信息确定与第二CU-CP使用通信接口进行通信，从而向第二CU-CP发送第一请求信息。
第一CU-CP发送第五指示信息之前，可以先确定第一CU-CP过载。第一CU-CP确定第一CU-CP过载的流程与上述类似，在此不再赘述。
需要补充的是，第一CU-CP确定第一CU-CP过载也可以包括接收来自第二CU-CP的指示信息，该指示信息指示第一CU-CP过载。第二CU-CP确定第一CU-CP过载的流程与AMF等确定第一CU-CP过载的流程类似，在此不再赘述。
由第二CU-CP获取第一CU-CP的状态值信息，确定第一CU-CP过载，并据此使用通信接口与DU和/或第一CU-UP进行通信，相较于第二CU-CP获取第一CU-CP的状态值信息，确定第一CU-CP过载后向第一CU-CP发送指示信息指示第一CU-CP过载，再由第一CU-CP指示其他网元或单元第一CU-CP过载的方案，能够节省更多的信令开销，简化流程，并且能够减少多次发送指示信息造成丢包错误的概率，提高系统的稳定性。
其中，DU和/或第一CU-UP接收的第二消息包括第六指示信息，该第六指示信息用 于指示DU和/或第一CU-UP使用通信接口与第二CU-CP进行通信。DU和/或第一CU-UP根据第六指示信息确定与第二CU-CP使用通信接口进行通信，从而向第二CU-CP发送第一请求信息。
该第六指示信息可以为第一CU-CP确定自身过载以后向DU和/或第一CU-UP发送的。第一CU-CP确定自身过载的流程与上述类似，在此不再赘述。
在另一个实施例中，DU和/或第一CU-UP可以不接收第二消息，在确定第一CU-CP的软件更新时间超过第一时间的情况下，向第二CU-CP发送第一请求信息。
当第一CU-CP进行软件更新，第一CU-CP可能进行如下步骤：
例如，第一CU-CP向DU发送传输网络层偶联(Transport Network Layer Association，TNLA)释放请求(release request)信息,该信息用于指示释放第一CU-CP和DU之间的F1-C接口的TNLA。DU根据该信息释放TNLA。
再例如，第一CU-CP向第一CU-UP发送TNLA release request信息,该信息用于指示释放第一CU-CP和第一CU-UP之间的E1接口的TNLA。第一CU-UP根据该指示释放TNLA。
又例如，第一CU-CP向AMF发送TNLA release request信息,该信息用于指示释放第一CU-CP和AMF之间的NG(next generation)接口的TNLA。AMF根据指示释放TNLA。
可选的，在第二CU-CP接收或发送消息(例如接收第一消息)之前，第二CU-CP会接收指示信息，该指示信息指示第二CU-CP为第一CU-CP的备份。
例如，当需要第二CU-CP确定第一CU-CP是否过载或故障时，第二CU-CP需要先确定自身为第一CU-CP的备份。示例性的，该指示信息可以为上述确定第二CU-CP的单元或网元向第二CU-CP发送的。可选的，该指示信息也可以为上述确定第二CU-CP的单元或网元通过其他单元或网元转发给第二CU-CP的。
可选的，当第一CU-CP过载时，DU和/或第一CU-UP可以将其下的部分终端设备的业务迁移到第二CU-CP。换句话说，DU和/或第一CU-UP可以同时与第一CU-CP和第二CU-CP使用通信接口进行通信。
DU和/或第一CU-UP同时连接到多个CU-CP，可以减少DU和/或第一CU-UP的业务都在同一个CU-CP而造成CU-CP的负载过重，能够更灵活的利用备份CU-CP进行业务的分担，降低系统故障的概率，提高网络的稳定性。
S320，接收来自第一CU-CP的上下文信息
在本申请实施例中执行主体可以为第二CU-CP，或者执行第二CU-CP功能的芯片，或者，执行第二CU-CP功能的处理器，或者，执行第二CU-CP功能的软件或者逻辑模块等，本申请不限定。需要说明的是，该步骤S310和S320的先后顺序不限制。
该上下文信息可以包括DU和/或第一CU-UP的上下文信息。可选的，该上下文信息可以包括第一CU-CP下的至少一个终端设备的上下文信息。
在一种实施例中，第一CU-CP可以将上下文信息直接发送给第二CU-CP。即在第一CU-CP未发生故障或者过载时，第一CU-CP就可以将该上下文信息发送给第二CU-CP。
具体的，第一CU-CP可以每隔第三周期向第二CU-CP发送上下文信息。第一CU-CP也可以在上下文信息发生改变时，实时地向第二CU-CP发送上下文信息。
在另一种实施例中，第二CU-CP可以通过核心网网元接收来自第一CU-CP的上下文 信息。其中，该核心网网元可以为AMF。可选的，该核心网网元可以为新引入的网元。
示例性的，第一CU-CP在未发生过载或故障时可以将上下文信息发送到核心网网元进行存储。第一CU-CP可以每隔第三周期向核心网网元发送上下文信息。第一CU-CP也可以在上下文信息发生改变时实时地向核心网网元发送上下文信息。
进一步的，第一CU-CP将上下文信息发送到核心网网元进行存储时，可以在该上下文信息中携带第一CU-CP的标识和/或第一CU-CP下的终端设备的标识，以便AMF对该上下文信息进行标记。
其中，第一CU-CP的标识用来标识与第一CU-CP相关的上下文信息，即DU和/或第一CU-UP的上下文信息。终端设备的标识用于标识某一个终端设备相关的上下文信息。
示例性的，该第一CU-CP的标识可以为RAN节点全局唯一标识(globally unique RAN node ID)，该终端设备的标识可以为RAN节点内NG接口上的UE的标识(RAN UE NGAP(next generation application protocol，NG接口应用协议)ID)
一方面，在第二CU-CP作为第一CU-CP的备份，需要使用通信接口与DU和/或第一CU-UP进行通信的情况下，第二CU-CP可以从核心网网元获取该上下文信息。
可选的，第二CU-CP从核心网网元获取该上下文信息时，可以向AMF发送该第一CU-CP的标识，AMF根据该第一CU-CP的标识确定第一CU-CP的上下文信息并发送给第二CU-CP。
可选的，第二CU-CP从核心网网元获取该上下文信息时，可以向AMF发送某一个终端设备的标识，AMF根据该终端设备的标识确定该终端设备的上下文信息并发送给第二CU-CP。
另一方面，AMF可以主动向第二CU-CP发送该上下文信息。例如，当AMF检测到第一CU-CP故障或者过载时，可以向第二CU-CP发送该上下文信息。可选的，该上下文信息还可以包括第一CU-CP的标识，或者，终端设备的标识，用于AMF向第二CU-CP发送下行的NGAP消息时，标记该上下文信息，使第二CU-CP获知该上下文信息为第一CU-CP的上下文和/或第一CU-CP下的某一个终端设备的上下文信息。
可选的，AMF向第二CU-CP发送该上下文信息时，该上下文信息中还可以包括新分配的RAN UE NGAP ID，用于第二CU-CP或AMF后续在该NG接口发送该终端设备相关的消息时，标记该终端设备。
相较于第一CU-CP实时地或周期性的向第二CU-CP发送上下文信息，第一CU-CP将上下文信息存储在核心网网元中，能够减少第一CU-CP故障或过载之前对第二CU-CP的影响，使得第二CU-CP在作为第一CU-CP的备份与DU和/或第一CU-UP使用通信接口进行通信之前的工作状态不受影响，节省第一CU-CP或者第二CU-CP不必要的信令开销。
示例性的，第二CU-CP与DU使用通信接口进行通信以后，当第二CU-CP在F1通信接口向DU发送F1AP(F1 application protocol，F1接口应用协议)消息(例如：终端设备上下文修改请求UE CONTEXT MODIFICATION REQUEST消息)时，第二CU-CP可以为其下服务的终端设备配置在第二CU-CP下使用的新的UE F1AP ID(如gNB-CU-CP UE F1AP ID)。该配置的过程可以为：第二CU-CP在向DU发送F1AP消息时，该F1AP消息可以携带DU与第一CU-CP在F1接口发送信息时使用的旧的UE F1AP ID以及DU 与第二CU-CP在F1接口发送信息使用的新的UE F1AP ID。DU可以根据该F1AP消息，使用新的UE F1AP ID替换旧的UE F1AP ID。
可选的，若DU不感知该第二CU-CP，即DU不感知哪个CU-CP作为备份为其服务时(例如，该第二CU-CP是第一CU-CP确定的，但第一CU-CP没有向DU发送第三指示信息，指示DU该第二CU-CP)，DU也可以根据新的UE F1AP ID确定通过哪个通信接口发送F1AP消息或使用哪个通信接口与第二CU-CP进行通信，即DU可以通过新的UE F1AP ID确定第二CU-CP。
示例性的，第二CU-CP与第一CU-UP使用通信接口进行通信以后，当第二CU-CP在E1通信接口向第一CU-UP发送E1AP(E1 application protocol，E1接口应用协议)消息时，可以为其下服务的终端设备配置在第二CU-CP下使用的新的UE E1AP ID(例如gNB-CU-CP UE E1AP ID)。该配置的过程可以为：第二CU-CP在向第一CU-UP发送E1AP消息时，该E1AP消息可以携带第一CU-UP与第一CU-CP在E1接口发送信息时使用的旧的UE E1AP ID以及第一CU-UP与第二CU-CP在E1接口发送信息时使用的新的UE E1AP ID。第一CU-UP可以根据该F1AP消息，使用新的UE E1AP ID替换旧的UE E1AP ID。
可选的，若第一CU-UP不感知第二CU-CP，即第一CU-UP不感知哪个CU-CP作为备份为其服务时(例如，该第二CU-CP是第一CU-CP确定的，但第一CU-CP没有向第一CU-UP发送第三指示信息，指示第一CU-UP该第二CU-CP)，第一CU-UP也可以根据新的UE E1AP ID确定通过哪个通信接口发送E1AP消息或使用哪个通信接口与第二CU-CP进行通信，即第一CU-UP可以通过新的UE E1AP ID确定第二CU-CP。
下面将通过图5-图6对本申请实施例提供的通信方法提供示例性的流程说明。应理解，图5到图6示出的流程仅为上述方法实施例的几个具体示例，不对本申请实施例构成任何限定。
图5是本申请实施例提供的通信方法的一个示例。如图5所示，该示例500包括：
需要说明的是，在图示中以第一CU-CP或第二CU-CP或者DU或者第一CU-UP为执行主体，在本申请实施例中，例如：第二CU-CP，执行主体可以为第二CU-CP，或者执行第二CU-CP功能的芯片，或者，执行第二CU-CP功能的处理器，或者，执行第二CU-CP功能的软件或者逻辑模块等，本申请不限定。S510，DU和/或第一CU-UP接收来自第一CU-CP的第四指示信息，第四指示信息用于指示第一CU-CP集合。
具体的，该第一CU-CP集合的相关信息的获取和传递可以参考步骤S310，在此不再赘述。
S520，DU和/或第一CU-UP从第一CU-CP集合中确定第二CU-CP。
具体的，DU和/或第一CU-UP从第一CU-CP中确定第二CU-CP的方法步骤可以参考步骤S310，在此不再赘述。
可选的，DU和/或第一CU-UP从第一CU-CP集合中确定第二CU-CP以后，向第一CU-CP发送反馈信息，该反馈信息用于指示第二CU-CP，以便第一CU-CP确定该第二CU-CP以后进行后续交互。
S530，DU和/或第一CU-UP向第二CU-CP发送通信接口建立请求信息，进一步的，向第二CU-CP发送通信接口待机指示。
相对应的，第二CU-CP接收通信接口建立请求信息，向DU和/或第一CU-UP发送通信接口建立请求信息的响应消息。
相对应的，第二CU-CP接收通信接口待机指示，根据该待机指示暂时不与DU和/或第一CU-UP使用通信接口进行通信。
S540，DU和/或第一CP-UP接收来自第一CU-CP的状态值信息，根据该状态值信息确定第一CU-CP过载或者故障。
具体的，关于该状态值信息的相关描述可以参考步骤S310，在此不再赘述。
S550，DU和/或第一CU-UP根据第一CU-CP过载或故障，向第二CU-CP发送第一请求信息。
具体的，该第一请求信息用于请求与第二CU-CP使用通信接口进行通信。
具体的，该使用通信接口进行通信为激活待机的通信接口。
S560，第二CU-CP接收来自AMF的上下文信息。
需要说明的是，该上下文信息可以为DU和/或第一CU-UP的上下文信息，也可以为第一CU-CP下的某一个终端设备的上下文信息，关于该上下文信息的描述可以参考步骤S320，在此不再赘述。
AMF在向第二CU-CP发送上下文信息之前，可以从其他网元或单元的指示信息中确定第二CU-CP为第一CU-CP的备份，也可以自身确定第二CU-CP位第一CU-CP的备份。
需要说明的是，该步骤S560可以发生在步骤S510-S550中的任意一个步骤之前，在此不做限定，可以参考S320中的相关限定。
需要说明的是，第二CU-CP也可以直接接收来自第一CU-CP的上下文信息，可以参考步骤S320中的描述，该示例500仅为一个例子，不对方法300构成任何限定。
图6是本申请实施例提供的通信方法的另一个示例。如图6所示，该示例600包括：
需要说明的是，在图示中以第一CU-CP或第二CU-CP或者DU或者第一CU-UP为执行主体，在本申请实施例中，例如：第二CU-CP，执行主体可以为第二CU-CP，或者执行第二CU-CP功能的芯片，或者，执行第二CU-CP功能的处理器，或者，执行第二CU-CP功能的软件或者逻辑模块等，本申请不限定。
S610，DU和/或第一CU-UP接收来自第一CU-CP的第三指示信息，根据第三指示信息确定第二CU-CP，第三指示信息用于指示第二CU-CP。
需要说明的是，该第二CU-CP是第一CU-CP从第一CU-CP集合中确定的。
需要说明的是，该第一CU-CP集合的相关描述以及如何从第一CU-CP集合中确定第二CU-CP可以参考步骤S310，在此不再赘述。
S620，DU和/或第一CU-UP向第二CU-CP发送通信接口建立请求信息，进一步的，向第二CU-CP发送通信接口待机指示。
相对应的，第二CU-CP接收通信接口建立请求信息，向DU和/或第一CU-UP发送通信接口建立请求信息的响应消息。
相对应的，第二CU-CP接收通信接口待机指示，根据该待机指示暂时不与DU和/或第一CU-UP使用通信接口进行通信。
S630，第二CU-CP接收来自第一CU-CP的状态值信息，根据该状态值信息确定第一CU-CP过载或者故障。
具体的，关于该状态值信息的相关描述可以参考步骤S310，在此不再赘述。
S640，第二CU-CP根据第一CU-CP过载或故障，向DU和/或第一CU-UP发送使用通信接口进行通信的请求。
需要说明的是，该使用通信接口进行通信的请求为激活待机的通信接口。
S650，第二CU-CP接收来自AMF的上下文信息。
需要说明的是，该上下文信息可以为DU和/或第一CU-UP的上下文信息，关于该上下文信息的描述可以参考步骤S320，在此不再赘述。
需要说明的是，该步骤S650可以发生在步骤S610-S640中的任意一个步骤之前，在此不做限定，可以参考S320中的相关限定。
需要说明的是，第二CU-CP也可以直接接收来自第一CU-CP的上下文信息，可以参考步骤S320中的描述，该示例600仅为一个例子，不对方法300构成任何限定。
本申请实施例提供的方法，通过为第一CU-CP提供备份，使得当第一CU-CP发生故障或过载等情况时，DU和/或第一CU-UP能够使用通信接口与备份的第二CU-CP进行通信，减少了对应的终端设备的业务的中断，提高了系统的鲁棒性。
图7是本申请实施例提供的通信方法的另一例，如图7所示，该方法应用于CU和DU的分离架构中，该方法700包括：
S710，接收第一消息，根据第一消息与DU使用通信接口通信。
需要说明的是，执行主体可以为第二CU，或者执行第二CU功能的芯片，或者，执行第二CU功能的处理器，或者，执行第二CU功能的软件或者逻辑模块等，本申请不限定。
需要说明的是，该步骤与方法300中的步骤S310类似，只需将第二CU-CP替换为第二CU，将第一CU-CP替换为第一CU，将DU和/或第一CU-UP替换为DU即可，该步骤可参考方法300中的步骤S310，在此不再赘述。
S720，接收来自第一CU的上下文信息。
需要说明的是，执行主体可以为第二CU，或者执行第二CU功能的芯片，或者，执行第二CU功能的处理器，或者，执行第二CU功能的软件或者逻辑模块等，本申请不限定。
需要说明的是，该步骤S720与步骤S710的顺序可以替换。
需要说明的是，该步骤与方法300中的步骤S320类似，只需将第二CU-CP替换为第二CU，将第一CU-CP替换为第一CU，将DU和/或第一CU-UP替换为DU即可，该步骤可参考方法300中的步骤S320，在此不再赘述。
本申请实施例提供的方法，通过为第一CU提供备份，使得当第一CU发生故障或过载等情况时，DU能够使用通信接口与备份的第二CU进行通信，减少了对应的终端设备的业务的中断，提高了系统的鲁棒性。图8是本申请实施例通信装置的一例，如图8所示，该通信装置800包括收发单元810和处理单元820。
在某些实施例中，该通信装置800可以用于实现上述任一方法中涉及的第二CU-CP的功能。例如，该通信装置800可以与第二CU-CP相对应。
该通信装置800可以为第二CU-CP，并执行上述方法实施例中由第二CU-CP执行的步骤。收发单元810可以用于支持通信装置800进行通信，例如执行上述方法实施例中由 第二CU-CP执行的发送和/或接收的动作，处理单元820可以用于支持通信装置800执行上述方法实施例中的处理动作，例如执行上述方法实施例中由第二CU-CP执行的处理动作。
可选的，该通信装置还可以包括存储单元830(图8中未示出)，用于存储该通信装置的程序代码和数据。
具体的，可以参考如下描述：
收发单元810：用于接收来自第一集中式单元控制面CU-CP的上下文信息，上下文信息包括分布式单元DU和/或第一集中式单元用户面CU-UP的上下文，上下文信息用于第二CU-CP与DU和/或第一CU-UP通信。
该收发单元810还用于接收第一消息。
处理单元820：用于根据第一消息使用通信接口与DU和/或第一CU-UP进行通信。
其中，该收发单元810接收来自第一CU-CP的上下文信息可以是通过接入和移动性管理功能网元AMF接收来自第一CU-CP的上下文信息。
其中，第一CU-CP可以周期性的或实时的将上下文信息发送给AMF。
该第一消息可以包括来自第一CU-CP的状态值信息，处理单元820根据第一消息与DU和/或第一CU-UP使用通信接口进行通信，包括：处理单元820根据状态值信息确定第一CU-CP过载或故障；处理单元820根据第一CU-CP过载或故障，确定使用通信接口与DU和/或第一CU-UP进行通信；处理单元820使用通信接口与DU和/或第一CU-UP进行通信。
该状态值信息可以为反映第一CU-CP负载值的信息。例如，该负载值信息大于第一阈值表示第一CU-CP过载。
该状态值信息可以为反映第一CU-CP是否故障的信息。例如，状态值信息为错误值表示第一CU-CP故障，又例如，状态值信息为空表示第一CU-CP故障。
该第一消息可以包括来自DU和/或第一CU-UP的第一请求信息，该第一请求信息用于请求使用通信接口与第二CU-CP进行通信，处理单元820根据第一消息使用通信接口与DU和/或第一CU-UP进行通信，包括：处理单元820根据第一请求信息使用通信接口与DU和/或第一CU-UP进行通信。
该第一消息包括来自第一CU-CP的第一指示信息，第一指示信息用于指示第一CU-CP过载，处理单元820根据第一消息使用通信接口与DU和/或第一CU-UP进行通信，包括：处理单元820根据第一指示信息确定使用通信接口与DU和/或第一CU-UP进行通信；处理单元820使用通信接口与DU和/或第一CU-UP进行通信。
需要说明的是，该第一指示信息可以为第一CU-CP确定自身过载以后发送的，也可以是其他网元或单元确定第一CU-CP过载以后指示第一CU-CP发送的。
该第一消息包括来自第一CU-CP的第二指示信息，该第二指示信息指示处理单元820使用通信接口与DU和/或第一CU-UP进行通信，处理单元820根据第一消息使用通信接口与DU和/或第一CU-UP进行通信，包括：处理单元820根据第二指示信息，使用通信接口与DU和/或第一CU-UP进行通信。
需要说明的是，该第二指示信息可以为第一CU-CP确定自身过载以后确定指示处理单元820使用通信接口与DU和/或第一CU-UP进行通信发送的，也可以是其他网元确定 第一CU-CP过载以后确定指示处理单元820使用通信接口与DU和/或第一CU-UP进行通信发送给第一CU-CP而由第一CU-CP转发的。
需要说明的是，使用通信接口进行通信可以为建立并使用通信接口进行通信，也可以为激活待机的通信接口。
在某些实施例中，该通信装置800可以用于实现上述任一方法中涉及的第一CU-CP的功能。例如，该通信装置800可以与第一CU-CP相对应。
该通信装置800可以为第一CU-CP，并执行上述方法实施例中由第一CU-CP执行的步骤。收发单元810可以用于支持通信装置800进行通信，例如执行上述方法实施例中由第一CU-CP执行的发送和/或接收的动作，处理单元820可以用于支持通信装置800执行上述方法实施例中的处理动作，例如执行上述方法实施例中由第一CU-CP执行的处理动作。
可选的，该通信装置还可以包括存储单元830(图8中未示出)，用于存储该通信装置的程序代码和数据。
具体的，可以参考如下描述：
收发单元810：用于向第二集中式单元控制面CU-CP发送上下文信息，上下文信息包括分布式单元DU和第一集中式单元用户面CU-CP的上下文，上下文信息用于第二CU-CP与DU和/或第一CU-UP通信。
处理单元820：用于从第一CU-CP集合中确定第二CU-CP，第一CU-CP集合包括第一CU-CP，第一CU-CP集合中任意两个CU-CP支持作为互相的备份。
该收发单元810还用于向DU和/或第一CU-UP发送第三指示信息，该第三指示信息用于指示第二CU-CP。
该收发单元810还用于向DU和/或第一CU-UP发送第四指示信息，该第四指示信息用于指示第一CU-CP集合，该第一CU-CP集合包括第一CU-CP和第二CU-CP，第一CU-CP集合中任意两个CU-CP支持作为互相的备份，该收发单元810还用于接收DU或第一CU-UP的反馈信息并确定第二CU-CP，该反馈信息用于指示第二CU-CP。
该收发单元810还用于向第二CU-CP发送第一CU-CP的状态值信息，该状态值信息用于第一CU-CP过载或者故障的确定。
该收发单元810还用于向第二CU-CP发送第一指示信息，该第一指示信息用于指示第一CU-CP过载。
该收发单元810还用于向第二CU-CP发送第二指示信息，该第二指示信息用于指示第二CU-CP使用通信接口与DU和/或第一CU-UP进行通信。
该收发单元810向第二CU-CP发送第一指示信息或第二指示信息之前，该处理单元820还用于根据负载值大于第一阈值确定第一CU-CP过载。
该收发单元810还用于向DU和/或第一CU-UP发送第五指示信息，该第五指示信息用于指示第一CU-CP过载。
该收发单元810还用于向DU和/或第一CU-UP发送第六指示信息，该第六指示信息用于指示DU和/或第一CU-UP使用通信接口与第二CU-CP进行通信。
需要说明的是，使用通信接口进行通信可以为建立并使用通信接口进行通信，也可以为激活待机的通信接口。
在某些实施例中，该通信装置800可以用于实现上述任一方法中涉及的DU和/或第一CU-UP的功能。例如，该通信装置800可以与DU和/或第一CU-UP相对应。
该通信装置800可以为DU和/或第一CU-UP，并执行上述方法实施例中由DU和/或第一CU-UP执行的步骤。收发单元810可以用于支持通信装置800进行通信，例如执行上述方法实施例中由DU和/或第一CU-UP执行的发送和/或接收的动作，处理单元820可以用于支持通信装置800执行上述方法实施例中的处理动作，例如执行上述方法实施例中由DU和/或第一CU-UP执行的处理动作。
可选的，该通信装置还可以包括存储单元830(图8中未示出)，用于存储该通信装置的程序代码和数据。
具体的，可以参考如下描述：
收发单元810：用于接收第二消息。
处理单元820：用于确定第二CU-CP。
该收发单元810还用于根据第二消息，向第二CU-CP发送第一请求信息，该第一请求信息用于请求使用通信接口与第二CU-CP进行通信。
该处理单元820用于确定第二CU-CP，包括：收发单元810用于接收第一CU-CP发送的第三指示信息，该处理单元820用于根据第三指示信息确定第二CU-CP，第三指示信息用于指示第二CU-CP。
该处理单元820用于确定第二CU-CP，包括：收发单元810用于接收第一CU-CP发送的第四指示信息，处理单元820用于从第一CU-CP集合中确定第二CU-CP，该第四指示信息用于指示第一CU-CP集合，该第一CU-CP集合包括第一CU-CP，该第一CU-CP集合中任意两个CU-CP支持作为互相的备份。
该收发单元810还用于向第一CU-CP发送反馈信息，反馈信息用于指示第二CU-CP。
该第二消息包括来自第一CU-CP的状态值信息，该收发单元810根据第二消息向第二CU-CP发送第一请求信，包括：
处理单元820根据第一CU-CP的状态值信息确定第一CU-CP过载或故障；处理单元820根据第一CU-CP过载或故障确定与第二CU-CP使用通信接口进行通信；收发单元810向第二CU-CP发送第一请求信息。
该第二消息包括来自第一CU-CP的第五指示信息，第五指示信息用于指示第一CU-CP过载，该收发单元810根据第三消息向第二CU-CP发送第一请求信息，包括：
处理单元820根据第五指示信息确定与第二CU-CP使用通信接口进行通信；收发单元810向第二CU-CP发送第一请求信息。
该第二消息包括第六指示信息，该第六指示信息用于指示DU和/或第一CU-UP与第二CU-CP进行通信，收发单元810根据第三消息向第二CU-CP发送第一请求信息，包括：
收发单元810根据第六指示信息向第二CU-CP发送第一请求信息。
需要说明的是，使用通信接口进行通信可以为建立并使用通信接口进行通信，也可以为激活待机的通信接口。
图9是本申请实施例提供的信号传输的装置900的一例。如图9所示，该装置900包括：收发器910、处理器920和存储器930。该存储器930，用于存储指令。该处理器920与存储器930耦合，用于执行存储器中存储的指令，以执行上述本申请实施例提供的方法。
具体的，该装置900中的收发器910可以对应于装置800中的收发单元810，该通信装置900中的处理器920可以对应于通信装置800中的处理单元820。
应理解，上述存储器930和处理器920可以合成一个处理装置，处理器920用于执行存储器930中存储的程序代码来实现上述功能。具体实现时，该存储器930也可以集成在处理器920中，或者独立于处理器910。
图10是本申请实施例的通信装置的又一例的示意图。该通信装置可以用于执行上述第一CU-CP或第二CU-CP或DU或第一CU-UP所执行的方法，如图10所示，该通信装置包括：
至少一个输入接口(Input(s))1010，逻辑电路1020，至少一个输出接口(Output(s))1030。可选的，上述的逻辑电路可以是芯片，或其他可以实现本申请方法的集成电路。
输入接口1010用于输入或接收数据；输出接口1030用于输出或发送数据；逻辑电路1020用于执行上述如图3至如图7所述的各种可能的方法。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟 悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (56)

  1. 一种通信方法，其特征在于，应用于第二集中式单元控制面CU-CP，包括：
    接收来自第一CU-CP的上下文信息，所述上下文信息包括分布式单元DU和第一集中式单元用户面CU-UP的上下文，所述上下文信息用于所述第二CU-CP与所述DU和所述第一CU-UP通信；
    接收第一消息；
    根据所述第一消息，使用通信接口与所述DU和所述第一CU-UP进行通信。
  2. 根据权利要求1所述的方法，其特征在于，接收来自第一CU-CP的上下文信息，包括：
    通过接入和移动性管理功能网元接收来自所述第一CU-CP的所述上下文信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一消息包括来自所述第一CU-CP的状态值信息。
  4. 根据权利要求3所述的方法，其特征在于，所述根据所述第一消息，使用通信接口与所述DU和所述第一CU-UP进行通信，包括：
    根据所述状态值信息确定所述第一CU-CP过载或故障；
    根据所述第一CU-CP过载或故障，确定使用通信接口与所述DU和所述第一CU-UP进行通信；
    使用通信接口与所述DU和所述第一CU-UP进行通信。
  5. 根据权利要求1或2所述的方法，其特征在于，所述第一消息包括来自所述DU或所述第一CU-UP的第一请求信息，所述第一请求信息用于请求使用通信接口与所述第二CU-CP进行通信。
  6. 根据权利要求1或2所述的方法，其特征在于，所述第一消息包括来自所述第一CU-CP的第一指示信息，所述第一指示信息用于指示所述第一CU-CP过载。
  7. 根据权利要求1或2所述的方法，其特征在于，所述第一消息包括来自所述第一CU-CP的第二指示信息，所述第二指示信息用于指示使用通信接口与所述DU和所述第一CU-UP进行通信。
  8. 根据权利要求1至7中任一项所述的方法，其特征在于，所述使用通信接口进行通信，包括：
    建立并使用通信接口进行通信；或者，
    激活待机的通信接口并使用通信接口进行通信。
  9. 一种通信方法，其特征在于，应用于第一集中式单元控制面CU-CP，包括：
    向第二CU-CP发送上下文信息，所述上下文信息包括分布式单元DU和第一集中式单元用户面CU-UP的上下文，所述上下文信息用于所述第二CU-CP与所述DU和所述第一CU-UP通信。
  10. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    从第一CU-CP集合中确定所述第二CU-CP，所述第一CU-CP集合包括所述第一CU-CP，所述第一CU-CP集合中任意两个CU-CP支持作为互相的备份；
    向所述DU和所述CU-UP发送第三指示信息，所述第三指示信息用于指示所述第二CU-CP。
  11. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    向所述DU和所述第一CU-UP发送第四指示信息，所述第四指示信息用于指示所述第一CU-CP集合，所述第一CU-CP集合包括所述第一CU-CP和所述第二CU-CP，所述第一CU-CP集合中任意两个CU-CP支持作为互相的备份；
    接收来自所述DU或所述第一CU-UP的反馈信息，并根据所述反馈信息确定所述第二CU-CP，所述反馈信息用于指示所述第二CU-CP。
  12. 根据权利要求9-11中任一项所述的方法，其特征在于，所述方法还包括：向所述第二CU-CP发送所述第一CU-CP的状态值信息，所述状态值信息用于所述第一CU-CP过载或故障的确定。
  13. 根据权利要求9-11中任一项所述的方法，其特征在于，所述方法还包括：向所述第二CU-CP发送第一指示信息，所述第一指示信息用于指示所述第一CU-CP过载。
  14. 根据权利要求9-11中任一项所述的方法，其特征在于，所述方法还包括：向所述第二CU-CP发送第二指示信息，所述第二指示信息用于指示所述第二CU-CP使用通信接口与所述DU和所述第一CU-UP进行通信。
  15. 根据权利要求13或14所述的方法，其特征在于，所述第一CU-CP向所述第二CU-CP发送所述第一指示信息或所述第二指示信息之前，所述方法还包括：
    所述第一CU-CP根据负载值大于第一阈值，确定所述第一CU-CP过载。
  16. 根据权利要求9-15中任一项所述的方法，其特征在于，所述使用通信接口进行通信，包括：
    建立并使用通信接口进行通信；或者，
    激活待机的通信接口并使用通信接口进行通信。
  17. 一种通信方法，其特征在于，应用于分布式单元DU，包括：
    确定第二集中式单元控制面CU-CP；
    接收第二消息；
    根据所述第二消息向所述第二CU-CP发送第一请求信息，所述第一请求信息用于请求使用通信接口与所述第二CU-CP进行通信。
  18. 根据权利要求17所述的方法，其特征在于，所述确定第二CU-CP，包括：
    接收来自第一CU-CP的第三指示信息，并根据所述第三指示信息确定所述第二CU-CP，所述第三指示信息用于指示所述第二CU-CP。
  19. 根据权利要求17所述的方法，其特征在于，所述确定第二CU-CP，包括：
    接收来自第一CU-CP的第四指示信息，从第一CU-CP集合中确定所述第二CU-CP，所述第四指示信息用于指示所述第一CU-CP集合，所述第一CU-CP集合包括所述第一CU-CP，所述第一CU-CP集合中任意两个CU-CP支持作为互相的备份。
  20. 根据权利要求19所述的方法，其特征在于，所述方法还包括：
    向所述第一CU-CP发送反馈信息，所述反馈信息用于指示所述第二CU-CP。
  21. 根据权利要求17-19中任一项所述的方法，其特征在于，所述第二消息包括来自所述第一CU-CP的状态值信息。
  22. 根据权利要求21所述的方法，其特征在于，所述根据所述第二消息向所述第二CU-CP发送第一请求信息，包括：
    根据所述第一CU-CP的状态值信息确定所述第一CU-CP过载或故障；
    根据所述第一CU-CP过载或故障确定使用通信接口与所述第二CU-CP进行通信；
    向所述第二CU-CP发送所述第一请求信息。
  23. 根据权利要求17-19中任一项所述的方法，其特征在于，所述第二消息包括来自所述第一CU-CP的第五指示信息，所述第五指示信息用于指示所述第一CU-CP过载。
  24. 根据权利要求17-19中任一项所述的方法，其特征在于，所述第二消息包括来自所述第一CU-CP的第六指示信息，所述第六指示信息用于指示所述DU使用通信接口与所述第二CU-CP进行通信。
  25. 根据权利要求17-24中任一项所述的方法，其特征在于，所述使用通信接口进行通信，包括：
    建立并使用通信接口进行通信；或者，
    激活待机的通信接口并使用通信接口进行通信。
  26. 一种通信装置，其特征在于，包括：
    收发单元，用于接收来自第一CU-CP的上下文信息，所述上下文信息包括分布式单元DU和第一集中式单元用户面CU-UP的上下文，所述上下文信息用于所述第二CU-CP与所述DU和所述第一CU-UP通信；
    所述收发单元还用于接收第一消息；
    所述收发单元还用于根据所述第一消息，使用通信接口与所述DU和所述第一CU-UP进行通信。
  27. 根据权利要求26所述的装置，其特征在于，所述收发单元还用于通过接入和移动性管理功能网元接收来自所述第一CU-CP的所述上下文信息。
  28. 根据权利要求26或27所述的装置，其特征在于，所述第一消息包括来自所述第一CU-CP的状态值信息。
  29. 根据权利要求28所述的装置，其特征在于，所述装置还包括处理单元
    所述处理单元还用于根据所述状态值信息确定所述第一CU-CP过载或故障；
    所述处理单元还用于根据所述第一CU-CP过载或故障，确定使用通信接口与所述DU和所述第一CU-UP进行通信；
    所述收发单元还用于使用通信接口与所述DU和所述第一CU-UP进行通信。
  30. 根据权利要求26或27所述的装置，其特征在于，所述第一消息包括来自所述DU或所述第一CU-UP的第一请求信息，所述第一请求信息用于请求使用通信接口与所述第二CU-CP进行通信。
  31. 根据权利要求26或27所述的装置，其特征在于，所述第一消息包括来自所述第一CU-CP的第一指示信息，所述第一指示信息用于指示所述第一CU-CP过载。
  32. 根据权利要求26或27所述的装置，其特征在于，所述第一消息包括来自所述第一CU-CP的第二指示信息，所述第二指示信息用于指示使用通信接口与所述DU和所述第一CU-UP进行通信。
  33. 根据权利要求26至32中任一项所述的装置，其特征在于，
    所述收发单元用于建立并使用通信接口进行通信；或者，
    所述收发单元用于激活待机的通信接口并使用通信接口进行通信。
  34. 一种通信装置，其特征在于，包括：
    收发单元，所述收发单元用于向第二CU-CP发送上下文信息，所述上下文信息包括分布式单元DU和第一集中式单元用户面CU-UP的上下文，所述上下文信息用于所述第二CU-CP与所述DU和所述第一CU-UP通信。
  35. 根据权利要求34所述的装置，其特征在于，所述装置还包括处理单元，
    所述处理单元用于从第一CU-CP集合中确定所述第二CU-CP，所述第一CU-CP集合包括所述第一CU-CP，所述第一CU-CP集合中任意两个CU-CP支持作为互相的备份；
    所述收发单元还用于向所述DU和所述CU-UP发送第三指示信息，所述第三指示信息用于指示所述第二CU-CP。
  36. 根据权利要求34所述的装置，其特征在于，
    所述收发单元还用于向所述DU和所述第一CU-UP发送第四指示信息，所述第四指示信息用于指示所述第一CU-CP集合，所述第一CU-CP集合包括所述第一CU-CP和所述第二CU-CP，所述第一CU-CP集合中任意两个CU-CP支持作为互相的备份；
    所述收发单元还用于接收来自所述DU或所述第一CU-UP的反馈信息，并根据所述反馈信息确定所述第二CU-CP，所述反馈信息用于指示所述第二CU-CP。
  37. 根据权利要求34至36中任一项所述的装置，其特征在于，
    所述收发单元还用于向所述第二CU-CP发送所述第一CU-CP的状态值信息，所述状态值信息用于所述第一CU-CP过载或故障的确定。
  38. 根据权利要求34至36中任一项所述的装置，其特征在于，
    所述收发单元还用于向所述第二CU-CP发送第一指示信息，所述第一指示信息用于指示所述第一CU-CP过载。
  39. 根据权利要求34至36中任一项所述的装置，其特征在于，
    所述收发单元还用于向所述第二CU-CP发送第二指示信息，所述第二指示信息用于指示所述第二CU-CP使用通信接口与所述DU和所述第一CU-UP进行通信。
  40. 根据权利要求38或39所述的装置，其特征在于，所述收发单元向所述第二CU-CP发送所述第一指示信息或所述第二指示信息之前，
    所述处理单元还用于根据负载值大于第一阈值，确定所述第一CU-CP过载。
  41. 根据权利要求34至40中任一项所述的装置，其特征在于，
    所述收发单元用于建立并使用通信接口进行通信；或者，
    所述收发单元用于激活待机的通信接口并使用通信接口进行通信。
  42. 一种通信装置，其特征在于，包括：
    处理单元，用于确定第二集中式单元控制面CU-CP；
    收发单元，用于接收第二消息；
    所述收发单元还用于根据所述第二消息向所述第二CU-CP发送第一请求信息，所述第一请求信息用于请求使用通信接口与所述第二CU-CP进行通信。
  43. 根据权利要求42所述的装置，其特征在于，
    所述收发单元还用于接收来自第一CU-CP的第三指示信息，
    所述处理单元还用于根据所述第三指示信息确定所述第二CU-CP，所述第三指示信息用于指示所述第二CU-CP。
  44. 根据权利要求42所述的装置，其特征在于，
    所述收发单元还用于接收来自第一CU-CP的第四指示信息；
    所述处理单元还用于从第一CU-CP集合中确定所述第二CU-CP，所述第四指示信息用于指示所述第一CU-CP集合，所述第一CU-CP集合包括所述第一CU-CP，所述第一CU-CP集合中任意两个CU-CP支持作为互相的备份。
  45. 根据权利要求44所述的装置，其特征在于，
    所述收发单元还用于向所述第一CU-CP发送反馈信息，所述反馈信息用于指示所述第二CU-CP。
  46. 根据权利要求42至45中任一项所述的装置，其特征在于，所述第二消息包括来自所述第一CU-CP的状态值信息。
  47. 根据权利要求46所述的装置，其特征在于，
    所述处理单元还用于根据所述第一CU-CP的状态值信息确定所述第一CU-CP过载或故障；
    所述处理单元还用于根据所述第一CU-CP过载或故障确定使用通信接口与所述第二CU-CP进行通信；
    所述收发单元还用于向所述第二CU-CP发送所述第一请求信息。
  48. 根据权利要求42至45中任一项所述的装置，其特征在于，所述第二消息包括来自所述第一CU-CP的第五指示信息，所述第五指示信息用于指示所述第一CU-CP过载。
  49. 根据权利要求42至45中任一项所述的装置，其特征在于，所述第二消息包括来自所述第一CU-CP的第六指示信息，所述第六指示信息用于指示所述DU使用通信接口与所述第二CU-CP进行通信。
  50. 根据权利要求42至49中任一项所述的装置，其特征在于，
    所述收发单元用于建立并使用通信接口进行通信；或者，
    所述收发单元用于激活待机的通信接口并使用通信接口进行通信。
  51. 一种通信装置，其特征在于，包括至少一个处理器，所述处理器与存储器耦合；
    所述存储器，用于存储程序指令和数据；
    所述处理器，用于执行所述存储器中的指令，以实现如权利要求1至8或权利要求9至16或权利要求17至25中任一项所述的方法。
  52. 一种计算机可读存储介质，其特征在于，所述计算机可读介质上存储有计算机指令，当所述计算机指令在计算机上运行时，使得所述计算机执行如权利要求1至25中任意一项所述的方法。
  53. 一种包含指令的计算机程序产品，其特征在于，当其在计算机上运行时，使得如权利要求1至8中任一项所述的方法被执行，或使得如权利要求9至16中任一项所述的方法被执行，或使得如权利要求17至25中任一项所述的方法被执行。
  54. 一种芯片，其特征在于，包括处理器和通信接口，所述通信接口用于接收数据和/或信息，并将接收到的数据和/或信息传输至所述处理器，所述处理器处理所述数据和/或信息，以执行如权利要求1至8中任一项所述的方法，或者如权利要求9至16中任一项 所述的方法，或者如权利要求17至25中任一项所述的方法。
  55. 一种通信系统，其特征在于，包括如下通信装置的一项或多项：如权利要求26至33中任一项所述的通信装置，如权利要求34至41中任一项所述的通信装置，以及如权利要求42至50中任一项所述的通信装置。
  56. 一种通信装置，其特征在于，所述装置用于执行如权利要求1至25中任一项所述的方法。
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