WO2022000496A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2022000496A1
WO2022000496A1 PCT/CN2020/100242 CN2020100242W WO2022000496A1 WO 2022000496 A1 WO2022000496 A1 WO 2022000496A1 CN 2020100242 W CN2020100242 W CN 2020100242W WO 2022000496 A1 WO2022000496 A1 WO 2022000496A1
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WO
WIPO (PCT)
Prior art keywords
network device
information
random access
access network
capability information
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Application number
PCT/CN2020/100242
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English (en)
Chinese (zh)
Inventor
常俊仁
韩磊
王玲萍
冯淑兰
刘江华
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2020/100242 priority Critical patent/WO2022000496A1/fr
Priority to CN202080007286.XA priority patent/CN114145043B/zh
Publication of WO2022000496A1 publication Critical patent/WO2022000496A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/06—Access restriction performed under specific conditions based on traffic conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a communication method and device.
  • actually deployed base stations and core network equipment there may be base stations that support different protocol versions at the same time.
  • actually deployed base station 1 and base station 2 may support different protocol versions, or there may be different Core network devices with protocol versions, such as actually deployed core network device 1 and core network device 2, may support different protocol versions.
  • a communication problem between the terminal device and the network device may occur due to the incompatibility between the terminal device and the network device (eg, base station or core network device).
  • an embodiment of the present application provides a communication method, which can be applied to a terminal device or a chip in a terminal device. Taking the method being applied to a terminal device as an example, in this method, the terminal device sends a message to an access network device. Sending request information, where the request information is used to request network capability information, where the network capability information includes capability information of the access network device and/or capability information of the core network device; and receiving network capability information from the access network device.
  • the terminal device can request network capability information from the access network device in an on-demand manner, thereby effectively assisting the terminal device to perform fast and efficient problem location, avoiding the terminal device from performing an aimless attempt to reduce capability, and facilitating quick solutions. Communication problems caused by incompatibility between end devices and network devices.
  • the method further includes: sending the first capability information to the access network device according to the network capability information.
  • sending the request information to the access network device includes: after meeting at least one of the following items, sending the request information to the access network device: (1) determining that a radio resource control RRC connection establishment failure occurs; (2) ) determine that a registration failure has occurred; (3) determine that a service transmission failure has occurred; (4) receive indication information from the access network device, the indication information is used to indicate at least one of the following: the first message sent by the terminal device cannot be identified; One or more information elements in the first message; the second capability information sent by the terminal device fails to parse; the capability of the terminal device is too large; ASN.1 information element analysis fails; ASN.1 extended information element analysis fails; (5) It is determined that the network capability area to which the access network device belongs is different from the historical network capability area.
  • the network capability area includes at least one access network device, and at least one access network device has the same capability.
  • the request information is random Access preamble.
  • the method further includes: receiving configuration information from the access network device, where the configuration information is used to configure a random access preamble and/or a random access resource used to send the random access preamble.
  • the random access preamble is the first random access preamble and/or the random access resource used for sending the random access preamble is the first random access resource, and the request information is used to request capability information of the access network equipment; or, the random access preamble is the second random access preamble and/or the random access resource used for sending the random access preamble is the second random access resource, and the request information is used for It is used to request capability information of core network equipment.
  • the terminal device can request the capability information of the access network device or the capability information of the core network device in a more targeted manner.
  • the method further includes: sending indication information to the access network device, where the indication information is used to indicate a reason value for requesting the network capability information.
  • the indication information is carried in the RRC connection establishment request message.
  • the network capability information is carried in a random access response message, an RRC connection establishment message, an RRC connection recovery message, a system message or an RRC connection reconfiguration message.
  • the capability information of the access network device includes at least one of the following: protocol version information supported by the access network device, product version information of the access network device, and cache capability information of the access network device.
  • the capability information of the core network device includes at least one of the following: protocol version information supported by the core network device, product version information of the core network device, and cache capability information of the core network device.
  • the product version information of the core network device includes at least one of the following: manufacturer information of the core network device, network information to which the core network device belongs, area information to which the core network device belongs, and software of the core network device Version Information.
  • an embodiment of the present application provides a communication method, and the method can be applied to a first access network device or a chip in the first access network device.
  • the first access network device receives request information from the terminal device, the request information is used to request network capability information, and the network capability information includes capability information of the access network device and/or capability information of the core network device; and , and send network capability information to the terminal device.
  • the method further includes: receiving first capability information from the terminal device, where the first capability information is determined according to the network capability information.
  • the method further includes: receiving capability information of the core network device from the core network device.
  • the request information is a random access preamble.
  • the method further includes: sending configuration information to the terminal device, where the configuration information is used to configure a random access preamble and/or a random access resource used for sending the random access preamble.
  • the random access preamble is the first random access preamble and/or the random access resource used for sending the random access preamble is the first random access resource, and the request information is used to request capability information of the access network equipment; or, the random access preamble is the second random access preamble and/or the random access resource used for sending the random access preamble is the second random access resource, and the request information is used for It is used to request capability information of core network equipment.
  • the method further includes: receiving indication information from the terminal device, where the indication information is used to indicate a reason value for requesting the network capability information.
  • the indication information is carried in the RRC connection establishment request message.
  • the network capability information is carried in a random access response message, an RRC connection establishment message, an RRC connection recovery message, a system message or an RRC connection reconfiguration message.
  • the capability information of the access network device includes at least one of the following: protocol version information supported by the access network device, product version information of the access network device, and cache capability information of the access network device.
  • the product version information of the access network device includes at least one of the following: manufacturer information of the access network device, network information to which the access network device belongs, area information to which the access network device belongs, and access network device information.
  • Software version information of the network access device includes at least one of the following: manufacturer information of the access network device, network information to which the access network device belongs, area information to which the access network device belongs, and access network device information.
  • the capability information of the core network device includes at least one of the following: protocol version information supported by the core network device, product version information of the core network device, and cache capability information of the core network device.
  • the product version information of the core network device includes at least one of the following: manufacturer information of the core network device, network information to which the core network device belongs, area information to which the core network device belongs, and software of the core network device Version Information.
  • an embodiment of the present application provides a communication device, where the communication device may be a terminal device or a chip provided inside the terminal device.
  • the communication device has the function of implementing the first aspect.
  • the communication device includes modules or units or means (means) corresponding to the steps involved in executing the first aspect, and the functions, units or means may be implemented by software. , or implemented by hardware, or by executing corresponding software by hardware.
  • the communication device includes a processing unit and a communication unit, wherein the communication unit can be used to send and receive signals to implement communication between the communication device and other devices, for example, the communication unit is used to receive data from Configuration information of the terminal device; the processing unit can be used to perform some internal operations of the communication device.
  • the functions performed by the processing unit and the communication unit may correspond to the operations involved in the first aspect above.
  • the communication device includes a processor, which may be operative to couple with the memory.
  • the memory may store necessary computer programs or instructions to implement the functions involved in the first aspect above.
  • the processor may execute computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, cause the communication apparatus to implement the method in any possible design or implementation manner of the first aspect.
  • the communication device includes a processor and a memory, and the memory can store necessary computer programs or instructions for implementing the functions involved in the first aspect above.
  • the processor may execute computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, cause the communication apparatus to implement the method in any possible design or implementation manner of the first aspect.
  • the communication device includes a processor and an interface circuit, wherein the processor is configured to communicate with other devices through the interface circuit, and execute the method in any possible design or implementation of the first aspect above .
  • the present application provides a communication device, where the communication device may be an access network device or a chip provided inside the access network device.
  • the communication device has the function of implementing the second aspect.
  • the communication device includes modules or units or means (means) corresponding to the operations involved in performing the second aspect, and the modules, units, or means may be implemented by software. , or implemented by hardware, or by executing corresponding software by hardware.
  • the communication device includes a processing unit and a communication unit, wherein the communication unit can be used to send and receive signals to implement communication between the communication device and other devices, for example, the communication unit is used to receive data from Configuration information of the terminal device; the processing unit can be used to perform some internal operations of the communication device.
  • the functions performed by the processing unit and the communication unit may correspond to the operations involved in the second aspect above.
  • the communication device includes a processor, which may be operative to couple with the memory.
  • the memory may store necessary computer programs or instructions to implement the functions involved in the second aspect above.
  • the processor can execute computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, cause the communication apparatus to implement the method in any possible design or implementation manner of the second aspect.
  • the communication device includes a processor and a memory
  • the memory can store necessary computer programs or instructions for implementing the functions involved in the second aspect above.
  • the processor can execute computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, cause the communication apparatus to implement the method in any possible design or implementation manner of the second aspect.
  • the communication device includes a processor and an interface circuit, wherein the processor is configured to communicate with other devices through the interface circuit, and execute the method in any possible design or implementation of the second aspect above .
  • an embodiment of the present application provides a communication system, wherein the communication system may include the communication apparatus described in the third aspect and the communication apparatus described in the fourth aspect.
  • the present application provides a computer-readable storage medium, where computer-readable instructions are stored in the computer storage medium, and when the computer reads and executes the computer-readable instructions, the computer is made to execute the above-mentioned first aspect or The method in any possible design of the second aspect.
  • the present application provides a computer program product that, when the computer reads and executes the computer program product, causes the computer to execute the method in any possible design of the first aspect or the second aspect.
  • the present application provides a chip, the chip includes a processor, the processor is coupled to a memory, and is configured to read and execute a software program stored in the memory, so as to implement the above-mentioned first aspect or the second any possible design method of the aspect.
  • FIG. 2a is a schematic diagram of a CU-DU separation architecture provided by an embodiment of the present application.
  • FIG. 2b is a schematic diagram of still another CU-DU separation architecture provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart corresponding to the communication method provided in Embodiment 1 of the present application.
  • FIG. 4 is a schematic flowchart corresponding to the communication method provided in Embodiment 2 of the present application.
  • FIG. 5 is a possible exemplary block diagram of the apparatus involved in the embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of an access network device according to an embodiment of the present application.
  • FIG. 1 is a schematic diagram of a network architecture to which an embodiment of the present application is applied.
  • a terminal device can access a wireless network to obtain services from an external network (such as a data network (DN)) through the wireless network, or communicate with other devices through the wireless network, such as with other terminals device communication.
  • the wireless network includes a radio access network (RAN) and a core network (CN), where the RAN may also be called an access network (AN) for connecting terminal devices to To the wireless network, the CN is used to manage the terminal equipment and provide the gateway to communicate with the DN.
  • RAN radio access network
  • CN core network
  • the CN is used to manage the terminal equipment and provide the gateway to communicate with the DN.
  • the terminal equipment, RAN, and CN involved in FIG. 1 are respectively described in detail below.
  • Terminal equipment also known as user equipment (UE) includes equipment that provides voice and/or data connectivity to users, for example, may include handheld devices with wireless connectivity, or processing devices connected to wireless modems .
  • the terminal equipment may communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN.
  • RAN radio access network
  • the terminal equipment may include wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, vehicle-to-everything (V2X) terminal equipment, machine-to-machine/machine-type communication ( machine-to-machine/machine-type communications, M2M/MTC) terminal equipment, Internet of things (Internet of things, IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station, access point (access point, AP) ), remote terminal, access terminal, user terminal, user agent, or user equipment, etc.
  • these may include mobile telephones (or "cellular" telephones), computers with mobile terminal equipment, portable, pocket-sized, hand-held, computer-embedded mobile devices, and the like.
  • PCS personal communication service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • constrained devices such as devices with lower power consumption, or devices with limited storage capacity, or devices with limited computing power, etc.
  • information sensing devices such as barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), and laser scanners.
  • RFID radio frequency identification
  • GPS global positioning system
  • the device for realizing the function of the terminal device may be the terminal device, or it may be a device capable of supporting the terminal device to realize the function, such as a chip system or a combined device or component capable of realizing the function of the terminal device.
  • a chip system may be composed of chips, or may include chips and other discrete devices.
  • the device for implementing the function of the access network device may be the access network device, or may be a device capable of supporting the access network device to realize the function, such as a chip system or a device capable of realizing the function of the access network device
  • the combination device and component of the device can be installed in the access network equipment.
  • the technical solutions provided by the embodiments of the present application are described by taking the device for implementing the functions of the access network equipment as an example of the access network equipment.
  • the control plane protocol layer structure may include a radio resource control (radio resource control, RRC) layer, a packet data convergence layer protocol (packet data convergence protocol) , PDCP) layer, radio link control (radio link control, RLC) layer, media access control (media access control, MAC) layer and physical layer;
  • RRC radio resource control
  • PDCP packet data convergence layer protocol
  • RLC radio link control
  • MAC media access control
  • user plane protocol layer structure may include PDCP layer, RLC layer, MAC layer and The physical layer, in a possible implementation, may further include a service data adaptation protocol (SDAP) layer above the PDCP layer.
  • SDAP service data adaptation protocol
  • a RAN device may include one or more centralized units (CUs) and one or more distributed units (DUs), and multiple DUs may be centrally controlled by one CU.
  • CUs centralized units
  • DUs distributed units
  • an interface between a CU and a DU may be referred to as an F1 interface, wherein a control plane (control panel, CP) interface may be an F1-C, and a user plane (user panel, UP) interface may be an F1-U.
  • the CU and DU can be divided according to the protocol layer of the wireless network: for example, as shown in Figure 2a, the functions of the PDCP layer and the above protocol layers are set in the CU, and the functions of the protocol layers below the PDCP layer (such as the RLC layer and the MAC layer, etc.) are set in the DU.
  • the above division of the processing functions of CU and DU according to the protocol layer is only an example, and can also be divided in other ways.
  • the functions of the protocol layer above the PDCP layer are set in the CU, and the PDCP layer and the following protocol layers.
  • the function of the CU is set in the DU.
  • the CU or DU can be divided into functions with more protocol layers.
  • the CU or DU can also be divided into partial processing functions with protocol layers.
  • some functions of the RLC layer and functions of the protocol layers above the RLC layer are placed in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are placed in the DU.
  • the functions of the CU may be implemented by one entity, or may also be implemented by different entities.
  • the functions of the CU can be further divided, that is, the control plane and the user plane are separated and implemented by different entities, namely the control plane CU entity (ie, the CU-CP entity) and the user plane CU entity. (ie the CU-UP entity), the CU-CP entity and the CU-UP entity can be coupled with the DU to jointly complete the functions of the RAN device.
  • the interface between the CU-CP entity and the CU-UP entity may be the E1 interface
  • the interface between the CU-CP entity and the DU may be the F1-C interface
  • the interface between the CU-UP entity and the DU may be the F1-U interface interface.
  • one DU and one CU-UP can be connected to one CU-CP.
  • one DU can be connected to multiple CU-UPs
  • one CU-UP can be connected to multiple DUs.
  • the signaling generated by the CU may be sent to the terminal device through the DU, or the signaling generated by the terminal device may be sent to the CU through the DU.
  • the DU may not parse the signaling, but directly encapsulate it through the protocol layer and transparently transmit it to the terminal device or CU.
  • the sending or receiving of the signaling by the DU includes this scenario.
  • the signaling of the RRC or PDCP layer will eventually be processed as the data of the physical layer and sent to the terminal device, or converted from the received data of the physical layer.
  • the signaling of the RRC or PDCP layer can also be considered to be sent by the DU, or sent by the DU and the radio frequency device.
  • the CN may include one or more core network devices or core network elements.
  • the CN may include access and mobility management function (AMF) network elements and session management functions.
  • AMF access and mobility management function
  • SMF session management function
  • UPF user plane function
  • PCF policy control function
  • UDM unified data management
  • application Function application function, AF
  • the SMF network element is the control plane network element provided by the operator's network and is responsible for managing the PDU sessions of the terminal equipment.
  • a PDU session is a channel for transmitting PDUs. Terminal devices need to communicate PDUs with the DN through the PDU session.
  • the PDU session is established, maintained and deleted by the SMF network element.
  • SMF network elements include session management (such as session establishment, modification and release, including tunnel maintenance between UPF and RAN), selection and control of UPF network elements, service and session continuity (SSC) mode selection, Session related functions such as roaming.
  • the UPF network element is the gateway provided by the operator, and is the gateway for the communication between the operator's network and the DN.
  • UPF network elements include user plane-related functions such as packet routing and transmission, packet detection, quality of service (QoS) processing, legal interception, upstream packet detection, and downstream packet storage.
  • QoS quality of service
  • the PCF network element is a control plane function provided by the operator, and is used to provide the SMF network element with the policy of the PDU session.
  • the policies may include charging-related policies, QoS-related policies, authorization-related policies, and the like.
  • the UDM network element is a control plane network element provided by an operator, and is responsible for storing information such as subscriber permanent identifier (SUPI) and subscription data of subscribers in the operator's network.
  • SUPI subscriber permanent identifier
  • the AF network element is a functional network element that provides various business services, can interact with the core network through other network elements, and can interact with the policy management framework for policy management.
  • network exposure function NEF
  • UDR network element unified data repository
  • the device for implementing the function of the core network device may be the core network device, or may be a device capable of supporting the core network device to realize the function, such as a chip system or a combined device that can realize the function of the core network device, component, the device can be installed in the core network equipment.
  • the technical solutions provided by the embodiments of the present application are described by taking the device for implementing the functions of the core network equipment as the core network equipment as an example.
  • the access network devices and core network devices in the embodiments of the present application may be collectively referred to as network devices, that is, the network devices may include access network devices and/or core network devices.
  • Npcf, Nudm, Naf, Namf, Nsmf, N1, N2, N3, N4, and N6 are interface serial numbers.
  • interface serial numbers please refer to the meanings defined in the relevant standard protocols, which are not limited here.
  • a 5G communication system is used as an example for illustration in FIG. 1
  • the solutions in the embodiments of the present application may also be applied to other possible communication systems, such as the 6th generation (6G) in the future.
  • 6G 6th generation
  • the above network elements or functions may be either network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (eg, a cloud platform).
  • a platform eg, a cloud platform
  • the foregoing network element or function may be implemented by one device, or may be implemented jointly by multiple devices, or may be a functional module in one device, which is not specifically limited in this embodiment of the present application.
  • the communication process between the terminal device and the network device is usually centered on the network device, that is, the configuration of most or all parameters is controlled by the network device.
  • the terminal device manufacturer usually relies on traversing various possible problems to locate and solve the problem, which results in a long time and low efficiency.
  • terminal equipment In dealing with practical problems, manufacturers of terminal equipment find that a considerable part of the problems are caused by incompatibility between terminal equipment and network equipment. There may be various situations in which the terminal device is incompatible with the network device. For example, a possible situation is that the protocol version supported by the terminal device is different from the protocol supported by the access network device, and/or the protocol version supported by the terminal device is Different from the protocol supported by the core network equipment.
  • the terminal device accesses normally on the LTE access network device side, but after the LTE access network device sends a secondary base station addition request message to the 5G access network device, the 5G access network device returns a reject message, and the reject message carries the The reason is that the air interface resources are unavailable; after analysis, it is found that the protocol version supported by the terminal device is higher than the protocol version supported by the 5G access network device, which causes the 5G access network device to fail to parse the capability information of the terminal device, resulting in the terminal device receiving Entry failed.
  • the capability information reported by the terminal device does not match the cache capability information of the access network device, and/or the capability information reported by the terminal device does not match the cache capability information of the core network device.
  • the access network device does not issue a handover command message, resulting in a handover failure; after analysis, it is found that the air interface capability information reported by the terminal device to the access network device is 348 bytes ( byte), and the container of the access network device can store capability information of a maximum of 300 bytes, so that the access network device fails to parse the capability information of the terminal device and cannot issue a handover command.
  • the embodiments of the present application provide a communication method, which is convenient to quickly solve the communication problem caused by the incompatibility between the terminal device and the network device.
  • the communication method provided by the embodiment of the present application may include: the terminal device sends request information to the access network device, where the request information is used to request network capability information, and then may receive the network capability information from the access network device.
  • the terminal device can obtain the network capability information, the capability can be reduced in a targeted manner with reference to the network capability information, which is convenient to quickly solve the communication problem caused by the incompatibility between the terminal device and the network device.
  • FIG. 3 is a schematic flowchart corresponding to the communication method provided in Embodiment 1 of the present application. As shown in FIG. 3 , the method may include:
  • Step 301 the terminal device determines that it needs to acquire network capability information.
  • the terminal device may determine that the network capability information needs to be acquired in various situations, such as the following situations 1 to 5.
  • the terminal device determines that an RRC connection establishment failure occurs. For example, after the terminal device sends the RRC connection establishment request message to the access network device, if it receives the RRC connection establishment rejection message sent by the second access network device, it can be understood that the RRC connection establishment fails.
  • the terminal device determines that a registration failure has occurred. For example, after the terminal device sends a registration request message to the core network device through the access network device, if it receives a registration rejection message sent by the core network device, it can be understood that the registration fails.
  • the terminal device determines that the service transmission fails, for example, the terminal device fails to successfully send service data to the access network device, or fails to successfully receive service data from the access network device.
  • the terminal device receives indication information from the access network device, where the indication information is used to indicate at least one of the following: (1) The first message sent by the terminal device cannot be identified, that is, the terminal device sends the access network device The first message is sent, but the access network device cannot recognize the first message.
  • the first message may include at least one of the following: an RRC connection establishment request message, an RRC connection establishment recovery request message, and an RRC connection re-establishment request message. (2) One or more cells in the first message cannot be identified.
  • ASN.1 information element
  • IE information element
  • ASN.1 extended cell or Field parsing failed ASN.1 extended cell or field parsing failed
  • ASN.1 critical (critical) extended cell or field parsing failed ASN.1 non-critical (critical) extended cell or field parsing failed.
  • the indication information may be carried in an RRC connection establishment reject message or a registration reject message.
  • the terminal device determines that the network capability area (NCA) to which the access network device belongs is different from the historical network capability information, or the terminal device determines that the network capability area has changed.
  • the network capability area includes at least one access network device, at least one access network device has the same capability, and one access network device may belong to one network capability area.
  • the network capability area may include one or more tracking areas (TA), or may also include one or more RAN areas, where the RAN area is an area for terminal devices in an inactive state.
  • TA tracking areas
  • the access network device may broadcast the network capability area information to which the access network device belongs through a system message, and then the terminal device may receive the network capability area information to which the access network device belongs.
  • the network capability area information may include the identifier of the network capability area (NCA ID).
  • the identifier of the network capability area may refer to the information used to identify the network capability area, such as the number of the network capability area or other possible information. limited. In the embodiments of the present application, any information that can play a role in distinguishing different network capability areas can be understood as an identifier of a network capability area.
  • the terminal device determines that the network capability area has changed. For example, after the terminal device accesses the access network device 1, if the network capability area information to which the access network device 1 belongs changes, the access network device 1 may send an updated system message, and the updated system message includes the changed The network capability area information, and then the terminal device may determine that the network capability area has changed after receiving the updated system message. For another example, after accessing the access network device 1, the terminal device can exit the access network device 1 and move from the coverage of the access network device 1 to the coverage of the access network device 2; further, the terminal device can receive the access network device 1. The network capability area information to which the access network device 2 belongs is sent by the network access device 2 through the system message. If the network capability area information to which the access network device 2 belongs is different from the network capability area information to which the access network device 1 belongs, it can be determined. The network capability area changes.
  • the network capability area information to which the access network device belongs may be sent by the core network device to the access network device, that is, the core network device may manage the network capability areas to which multiple access network devices belong information, and send the network capability area information to which each access network device belongs to the corresponding access network device.
  • the network capability area information to which the access network device belongs may also be determined through negotiation between the access network device and other access network devices.
  • the network capability area information to which the access network device belongs may be configured in the access network device in a pre-configured manner. This embodiment of the present application does not limit this.
  • Step 302 The terminal device sends request information to the access network device, where the request information is used to request network capability information, and the network capability information includes capability information of the access network device and/or capability information of the core network device.
  • the capability information of the access network device includes at least one of the following: protocol version information supported by the access network device, product version information of the access network device, and cache capability information of the access network device.
  • the protocol version information supported by the access network device may include an identifier of the protocol version supported by the access network device.
  • the protocol version can also be called a standard version, such as the 3rd generation partnership project (3GPP) standard release, such as R15, R16, etc., or it can also be a 3GPP standard version, such as v15.1.0, v16. 2.0 etc.
  • 3GPP 3rd generation partnership project
  • the product version information of the access network device refers to the code or model or serial number used to indicate the access network device, or may also refer to the code or model or serial number of the access network device allocated based on certain standard criteria.
  • the product version information of the access network device may consist of manufacturer information of the access network device itself and information of the network to which the access network device belongs.
  • the product version information of the access network device may include at least one of the following : Manufacturer information of the access network device, information of the network to which the access network device belongs, information of the area to which the access network device belongs, and software version information of the access network device.
  • the cache capability information of the access network device may be used to indicate the size of the cache space in which the access network device stores the capability information of the terminal device.
  • the capability information of the core network device includes at least one of the following: protocol version information supported by the core network device, product version information of the core network device, and cache capability information of the core network device.
  • the protocol version information supported by the core network device may include an identifier of the protocol version supported by the core network device.
  • the product version information of the core network device may include at least one of the following: manufacturer information of the core network device, network information to which the core network device belongs, region information to which the core network device belongs, and software version information of the core network device.
  • the cache capability information of the core network device may be used to indicate the size of the cache space in which the core network device stores the capability information of the terminal device.
  • the core network device may include AMF network elements, and may also include other possible network elements, such as SMF network elements, UPF network elements, etc., which are not specifically limited.
  • the request information may be a random access preamble.
  • the terminal device receives configuration information from the access network device, and the configuration information is used to configure the random access preamble and/or random access resources used to request network capability information, and the random access resources may be used for carrying Or resources for sending random access preambles.
  • the access network device may separately configure a random access preamble and/or random access resource for requesting capability information of the access network device, and a random access request for the capability information of the core network device Preamble and/or random access resources.
  • a random access preamble is the first random access preamble and/or the random access resource is the first random access resource, it is used to request capability information of the access network device.
  • the random access preamble is the second random access preamble and/or the random access resource is the second random access resource, it is used to request capability information of the core network device.
  • the terminal device determines that the network capability information to be acquired is the capability information of the access network device (such as the above-mentioned situation 1, situation 3, situation 4, or situation 5), it can use the first random access preamble and/or the first random access preamble and/or the first random access preamble.
  • a random access resource initiates random access. If the terminal device determines that the network capability information to be acquired is the capability information of the core network device (such as the above scenario 2 or scenario 3), it can use the second random access preamble and/or the second random access resource to initiate random access. .
  • the terminal device may also send indication information to the access network device, where the indication information is used to indicate a reason value for requesting network capability information, and the reason value may be at least one of the following: RRC connection establishment failure, registration failure, or service transmission failure, etc. .
  • the indication information is carried in the RRC connection establishment request message.
  • the terminal device can also request network capability information from the access network device in an implicit manner.
  • the terminal device can send instruction information to the access network device, and the access network device can The indication information determines that the terminal device needs to acquire network capability information.
  • the access network device may no longer configure the terminal device with a random access preamble and/or random access resource for requesting network capability information.
  • Step 303 the access network device sends the network capability information to the terminal device according to the request information.
  • the access network device may send the network capability information in various ways, for example, the network capability information may be carried in a random access response message, an RRC connection establishment message, an RRC connection recovery message, a system message or an RRC connection reconfiguration message.
  • Step 304 the terminal device communicates with the access network device and/or the core network device according to the network capability information.
  • the terminal device may perform capability rollback (ie, reduce the capability) according to the network capability information, and then use the rolled-back capability information to communicate with the access network device and/or the core network device.
  • capability rollback ie, reduce the capability
  • the terminal device can request network capability information from the access network device through an on-demand request, thereby effectively assisting the terminal device to locate problems quickly and efficiently, avoiding the need for the terminal
  • the device performs an aimless attempt to reduce the capability, which is convenient to quickly solve the communication problem caused by the incompatibility between the terminal device and the network device.
  • FIG. 4 is a schematic flowchart corresponding to the communication method provided in Embodiment 2 of the present application. As shown in FIG. 4 , the method may include:
  • the access network device and the core network device may exchange the identifiers of the protocol versions supported by each.
  • the core network device may send the identification of the protocol version supported by the core network device to the access network device.
  • step 401 the access network device sends a system message, so that the terminal device can receive the system message sent by the access network device.
  • the system message may include configuration information for acquiring network capability information on demand, and the configuration information may be used to configure random access preambles and/or random access resources, where random access resources may refer to physical random access resources.
  • Incoming channel physical random access channel, PRACH
  • different random access preambles and/or random access resources may be configured according to the capability information of the access network device and the capability information of the core network device obtained as needed.
  • Step 402 the terminal device determines that it needs to acquire network capability information.
  • the terminal device initiates access to the access network device based on service requirements to establish an RRC connection with the access network device. However, the terminal device determines that an RRC connection establishment failure or a registration failure occurs, and further determines that it needs to acquire network capability information.
  • the terminal device may determine that it needs to obtain network capability information.
  • Step 403 the terminal device selects the corresponding random access preamble and/or random access resource based on the configuration information provided in the system message for obtaining network capability information on demand, and sends the random access preamble to the access network device.
  • the terminal device can determine whether it needs to request the capability information of the access network device or the capability information of the core network device according to the potential cause of the communication abnormality, and select the corresponding random access preamble and/or Random access resources.
  • Step 404 the access network device sends a random access response message to the terminal device, and the random access response message carries the network capability information.
  • the access network device may also send the network capability information through a system message. In this case, the access network device may no longer send a random access response message to the terminal device.
  • the access network device may also send a random access response message to the terminal device, but the random access corresponding message does not carry network capability information. In this case, step 405 can be continued.
  • Step 405 the terminal device sends a random access message 3 to the access network device.
  • the random access message 3 may carry indication information, where the indication information is used to indicate a cause value of a communication abnormality, such as connection establishment failure, registration failure, or abnormal communication interruption.
  • a communication abnormality such as connection establishment failure, registration failure, or abnormal communication interruption.
  • Step 406 the access network device sends a random access message 4 to the terminal device, where the random access message 4 may carry network capability information.
  • the access network device may also send the network capability information to the terminal device through dedicated signaling or a broadcast message after the random access message 4 .
  • Step 407 the terminal device determines the capability information of the terminal device according to the network capability information provided by the access network, and re-initiates access.
  • the protocol version corresponding to the capability information determined by the terminal device may not be higher than the protocol version corresponding to the access network device and/or the protocol version corresponding to the core network device, so as to avoid the incompatibility between the terminal device and the network device. communication problems.
  • step numbers of the flowcharts described in Embodiment 1 and Embodiment 2 are only an example of the execution process, and do not constitute a restriction on the sequence of execution of the steps. There is no sequence in the embodiments of the present application. There is no strict order of execution between the steps of a dependency. In addition, not all the steps shown in each flowchart are steps that must be executed, and some steps may be added or deleted on the basis of each flowchart according to actual needs. In addition, the first embodiment and the second embodiment can be referred to each other.
  • the access network device or the terminal device may include corresponding hardware structures and/or software modules for performing each function.
  • the embodiments of the present application can be implemented in hardware or a combination of hardware and computer software. Whether a function is implemented by hardware or computer software-driven hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
  • the access network device or the terminal device may be divided into functional units according to the foregoing method examples.
  • each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • FIG. 5 shows a possible exemplary block diagram of the apparatus involved in the embodiment of the present application.
  • the apparatus 500 may include: a processing unit 502 and a communication unit 503 .
  • the processing unit 502 is used to control and manage the actions of the device 500 .
  • the communication unit 503 is used to support the communication between the apparatus 500 and other devices.
  • the communication unit 503 is also referred to as a transceiving unit, and may include a receiving unit and/or a sending unit, which are respectively configured to perform receiving and sending operations.
  • the apparatus 500 may further include a storage unit 501 for storing program codes and/or data of the apparatus 500 .
  • the apparatus 500 may be the terminal device in the foregoing embodiment, or may also be a chip provided in the terminal device.
  • the processing unit 502 can support the apparatus 500 to perform the actions of the terminal device in each method example above.
  • the processing unit 502 mainly performs the internal actions of the terminal device in the method example, and the communication unit 503 may support the communication between the apparatus 500 and other devices.
  • the communication unit 503 is configured to: send request information to the access network device, where the request information is used to request network capability information, where the network capability information includes capability information of the access network device and/or core network device and receiving network capability information from the access network device.
  • the communication unit 503 is further configured to: send the first capability information to the access network device according to the network capability information.
  • the communication unit 503 is further configured to: send request information to the access network device after meeting at least one of the following: (1) determine that a radio resource control RRC connection establishment failure occurs; (2) determine that a registration occurs failure; (3) determine that a service transmission failure occurs; (4) receive indication information from the access network device, the indication information is used to indicate at least one of the following: the first message sent by the terminal device cannot be identified; the first message cannot be identified in the first message.
  • the network capability area to which the access network device belongs is different from the historical network capability area.
  • the network capability area includes at least one access network device, and at least one access network device has the same capability.
  • the request information is a random access preamble.
  • the communication unit 503 is further configured to: receive configuration information from the access network device, where the configuration information is used to configure the random access preamble and/or the random access resource used to send the random access preamble .
  • the random access preamble is the first random access preamble and/or the random access resource used for sending the random access preamble is the first random access resource, and the request information is used to request capability information of the access network equipment; or, the random access preamble is the second random access preamble and/or the random access resource used for sending the random access preamble is the second random access resource, and the request information is used for It is used to request capability information of core network equipment.
  • the indication information is carried in the RRC connection establishment request message.
  • the network capability information is carried in a random access response message, an RRC connection establishment message, an RRC connection recovery message, a system message or an RRC connection reconfiguration message.
  • the capability information of the access network device includes at least one of the following: protocol version information supported by the access network device, product version information of the access network device, and cache capability information of the access network device.
  • the product version information of the access network device includes at least one of the following: manufacturer information of the access network device, network information to which the access network device belongs, area information to which the access network device belongs, and access network device information.
  • Software version information of the network access device includes at least one of the following: manufacturer information of the access network device, network information to which the access network device belongs, area information to which the access network device belongs, and access network device information.
  • the capability information of the core network device includes at least one of the following: protocol version information supported by the core network device, product version information of the core network device, and cache capability information of the core network device.
  • the product version information of the core network device includes at least one of the following: manufacturer information of the core network device, network information to which the core network device belongs, area information to which the core network device belongs, and software of the core network device Version Information.
  • the apparatus 500 may be the access network device in the foregoing embodiment, or may also be a chip provided in the access network device.
  • the processing unit 502 can support the apparatus 500 to perform the actions of the access network device in each method example above.
  • the processing unit 502 mainly performs the internal actions of the access network device in the method example, and the communication unit 503 may support the communication between the apparatus 500 and other devices.
  • the communication unit 503 is configured to: receive request information from the terminal device, where the request information is used to request network capability information, where the network capability information includes capability information of the access network device and/or information of the core network device. capability information; and, sending the network capability information to the terminal device.
  • the communication unit 503 is further configured to: receive first capability information from the terminal device, where the first capability information is determined according to the network capability information.
  • the communication unit 503 is further configured to: receive capability information of the core network device from the core network device.
  • the communication unit 503 is further configured to: send configuration information to the terminal device, where the configuration information is used to configure the random access preamble and/or the random access resource used for sending the random access preamble.
  • the random access preamble is the first random access preamble and/or the random access resource used for sending the random access preamble is the first random access resource, and the request information is used to request capability information of the access network equipment; or, the random access preamble is the second random access preamble and/or the random access resource used for sending the random access preamble is the second random access resource, and the request information is used for It is used to request capability information of core network equipment.
  • the communication unit 503 is further configured to: receive indication information from the terminal device, where the indication information is used to indicate a reason value for requesting the network capability information.
  • the network capability information is carried in a random access response message, an RRC connection establishment message, an RRC connection recovery message, a system message or an RRC connection reconfiguration message.
  • the capability information of the access network device includes at least one of the following: protocol version information supported by the access network device, product version information of the access network device, and cache capability information of the access network device.
  • the product version information of the access network device includes at least one of the following: manufacturer information of the access network device, network information to which the access network device belongs, area information to which the access network device belongs, and access network device information.
  • Software version information of the network access device includes at least one of the following: manufacturer information of the access network device, network information to which the access network device belongs, area information to which the access network device belongs, and access network device information.
  • the capability information of the core network device includes at least one of the following: protocol version information supported by the core network device, product version information of the core network device, and cache capability information of the core network device.
  • the product version information of the core network device includes at least one of the following: manufacturer information of the core network device, network information to which the core network device belongs, area information to which the core network device belongs, and software of the core network device Version Information.
  • each unit in the above apparatus can be realized in the form of software calling through the processing element; also can all be realized in the form of hardware; some units can also be realized in the form of software calling through the processing element, and some units can be realized in the form of hardware.
  • each unit can be a separately established processing element, or can be integrated in a certain chip of the device to be implemented, and can also be stored in the memory in the form of a program, which can be called by a certain processing element of the device and execute the unit's processing.
  • each operation of the above method or each of the above units may be implemented by an integrated logic circuit of hardware in the processor element or implemented in the form of software being invoked by the processing element.
  • a unit in any of the above apparatuses may be one or more integrated circuits configured to implement the above methods, eg, one or more application specific integrated circuits (ASICs), or, one or more Multiple microprocessors (digital singnal processors, DSPs), or, one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms.
  • ASICs application specific integrated circuits
  • DSPs digital singnal processors
  • FPGAs field programmable gate arrays
  • a unit in the apparatus can be implemented in the form of a processing element scheduler
  • the processing element can be a processor, such as a general-purpose central processing unit (CPU), or other processors that can invoke programs.
  • these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • the above unit for receiving is an interface circuit of the device for receiving signals from other devices.
  • the receiving unit is an interface circuit used by the chip to receive signals from other chips or devices.
  • the above unit for sending is an interface circuit of the device for sending signals to other devices.
  • the sending unit is an interface circuit used by the chip to send signals to other chips or devices.
  • FIG. 6 is a schematic structural diagram of a terminal device provided by an embodiment of the present application, which may be the terminal device in the above embodiment, and is used to implement operations of the terminal device in the above embodiment.
  • the terminal device includes: an antenna 610 , a radio frequency part 620 , and a signal processing part 630 .
  • the antenna 610 is connected to the radio frequency part 620 .
  • the radio frequency part 620 receives the information sent by the network device through the antenna 610, and sends the information sent by the network device to the signal processing part 630 for processing.
  • the signal processing part 630 processes the information of the terminal equipment and sends it to the radio frequency part 620
  • the radio frequency part 620 processes the information of the terminal equipment and sends it to the network equipment through the antenna 610 .
  • the signal processing part 630 may include a modulation and demodulation subsystem, which is used to implement the processing of each communication protocol layer of the data; it can also include a central processing subsystem, which is used to implement the processing of the terminal device operating system and the application layer; in addition, it can also Including other subsystems, such as multimedia subsystem, peripheral subsystem, etc., wherein the multimedia subsystem is used to realize the control of the terminal equipment camera, screen display, etc., and the peripheral subsystem is used to realize the connection with other devices.
  • the modem subsystem can be a separate chip.
  • the modulation and demodulation subsystem can be implemented by a chip, the chip includes at least one processing element and an interface circuit, wherein the processing element is used to execute each step of any one of the methods performed by the above terminal equipment, and the interface circuit is used to communicate with other devices.
  • the unit for the terminal device to implement each step in the above method may be implemented in the form of a processing element scheduler.
  • an apparatus for a terminal device includes a processing element and a storage element, and the processing element calls the program stored in the storage element to Execute the method executed by the terminal device in the above method embodiments.
  • the storage element may be a storage element in which the processing element is on the same chip, that is, an on-chip storage element.
  • the program for executing the method performed by the terminal device in the above method may be in a storage element on a different chip from the processing element, that is, an off-chip storage element.
  • the processing element calls or loads the program from the off-chip storage element to the on-chip storage element, so as to call and execute the method performed by the terminal device in the above method embodiments.
  • the units of the terminal device implementing each step in the above method may be integrated together and implemented in the form of an SOC, and the SOC chip is used to implement the above method.
  • At least one processing element and a storage element may be integrated in the chip, and the method executed by the above terminal device may be implemented in the form of a program stored in the storage element being invoked by the processing element; or, at least one integrated circuit may be integrated in the chip to implement the above terminal.
  • the above apparatus for a terminal device may include at least one processing element and an interface circuit, where the at least one processing element is configured to execute any method performed by the terminal device provided in the above method embodiments.
  • the processing element can execute part or all of the steps performed by the terminal device in the first way: by calling the program stored in the storage element; or in the second way: by combining the instructions with the integrated logic circuit of the hardware in the processor element Part or all of the steps performed by the terminal device may be performed in the manner of the first method; of course, some or all of the steps performed by the terminal device may also be performed in combination with the first manner and the second manner.
  • the terminal device shown in FIG. 6 can implement each process involving the terminal device in the foregoing method embodiments.
  • the operations and/or functions of each module in the terminal device shown in FIG. 6 are respectively to implement the corresponding processes in the foregoing method embodiments.
  • Access network equipment 70 may include one or more DUs 701 and one or more CUs 702.
  • the DU 701 may include at least one antenna 7011 , at least one radio frequency unit 7012 , at least one processor 7013 and at least one memory 7014 .
  • the DU 701 part is mainly used for the transceiver of radio frequency signals, the conversion of radio frequency signals and baseband signals, and part of baseband processing.
  • the CU 702 may include at least one processor 7022 and at least one memory 7021 .
  • the CU 702 part is mainly used to perform baseband processing, control access network equipment, and the like.
  • the DU 701 and the CU 702 can be physically set together, or can be physically set separately, that is, a distributed base station.
  • the CU 702 is the control center of the access network equipment, which can also be called a processing unit, and is mainly used to complete the baseband processing function.
  • the CU 702 may be used to control the access network device to perform the operation process of the access network device in the foregoing method embodiments.
  • the access network device 70 may include one or more radio frequency units, one or more DUs, and one or more CUs.
  • the DU may include at least one processor 7013 and at least one memory 7014
  • the radio unit may include at least one antenna 7011 and at least one radio frequency unit 7012
  • the CU may include at least one processor 7022 and at least one memory 7021 .
  • the CU702 may be composed of one or more boards, and the multiple boards may jointly support a wireless access network (such as a 5G network) with a single access indication, or may respectively support wireless access systems of different access standards.
  • Access network such as LTE network, 5G network or other network.
  • the memory 7021 and the processor 7022 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.
  • the DU701 can be composed of one or more single boards.
  • Multiple single boards can jointly support a wireless access network (such as a 5G network) with a single access indication, or can support a wireless access network with different access standards (such as a 5G network). LTE network, 5G network or other network).
  • the memory 7014 and processor 7013 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.
  • the access network device shown in FIG. 7 can implement each process involving the access network device in the foregoing method embodiments.
  • the operations and/or functions of each module in the access network device shown in FIG. 7 are respectively to implement the corresponding processes in the foregoing method embodiments.
  • system and “network” in the embodiments of the present application may be used interchangeably.
  • At least one means one or more, and “plurality” means two or more.
  • And/or which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects are an “or” relationship.
  • At least one item(s) below” or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • At least one of A, B and C includes A, B, C, AB, AC, BC or ABC.
  • ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, sequence, priority or importance of multiple objects degree.
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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Abstract

La présente demande, qui appartient au domaine technique des communications, concerne un procédé et un appareil de communication. Le procédé comprend : l'envoi, par un dispositif de terminal, d'informations de demande à un dispositif de réseau d'accès, les informations de demande étant utilisées pour demander des informations de capacité de réseau, et les informations de capacité de réseau comprenant des informations de capacité du dispositif de réseau d'accès et/ou des informations de capacité d'un dispositif de réseau cœur ; et la réception d'informations de capacité de réseau en provenance du dispositif de réseau d'accès. À l'aide du présent procédé, le dispositif de terminal peut demander des informations de capacité de réseau au dispositif de réseau d'accès au moyen d'un procédé de demande à la demande, ce qui permet d'assister efficacement le dispositif de terminal pour localiser rapidement et efficacement un problème, d'empêcher le dispositif de terminal d'exécuter des tentatives de réduction de capacité sans but, et de faciliter une résolution rapide de problèmes de communication causés par une incompatibilité entre le dispositif de terminal et le dispositif de réseau.
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