WO2020200254A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2020200254A1
WO2020200254A1 PCT/CN2020/082844 CN2020082844W WO2020200254A1 WO 2020200254 A1 WO2020200254 A1 WO 2020200254A1 CN 2020082844 W CN2020082844 W CN 2020082844W WO 2020200254 A1 WO2020200254 A1 WO 2020200254A1
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WO
WIPO (PCT)
Prior art keywords
nssai
request message
network element
management network
terminal device
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Application number
PCT/CN2020/082844
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English (en)
Chinese (zh)
Inventor
朱强华
吴问付
Original Assignee
华为技术有限公司
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Publication of WO2020200254A1 publication Critical patent/WO2020200254A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0893—Assignment of logical groups to network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method and device.
  • LTE long term evolution
  • 3GPP third generation partnership project proposes a fifth generation (5th generation, 5G) communication network.
  • a network slice is a logical network with specific network characteristics divided from a communication network, and is a key technology to meet the needs of 5G communication networks for network differentiation.
  • a physical network can be abstracted into multiple network slices, and each network slice constitutes an end-to-end logical network, which is logically isolated from each other.
  • Each network slice can flexibly provide one or more network services according to the requirements of the demander, and has no influence on other network slices in the network.
  • a non-public network is a non-public deployment network used to provide network services for specific users.
  • NPN can be implemented by relying on the support of the public land mobile network (PLMN), or it can also be implemented without relying on the support of the PLMN.
  • PLMN public land mobile network
  • PLMN public land mobile network
  • the present application provides a communication method and device to realize the combined use of CAG function and network slicing technology to provide NPN services for terminal devices.
  • an embodiment of the present application provides a communication method, which includes:
  • the first access management network element receives the identification of the first CAG accessed by the terminal device from the access network device, and sends to the terminal device a permitted NSSAI, allowing the NSSAI to include one or more single network slice selection auxiliary information S-NSSAI, one
  • the network slices identified by the or multiple S-NSSAIs are network slices that allow the terminal device to access; the one or more S-NSSAIs are associated with the identity of the first CAG.
  • the S-NSSAI in the NSSAI is allowed to be associated with the identity of the first CAG, the accuracy of the allowed NSSAI can be guaranteed, the effectiveness of the terminal device in selecting the S-NSSAI is improved, and the subsequent normal transmission of the service data stream is facilitated.
  • an embodiment of the present application provides a communication method, which includes:
  • the first access management network element receives from the access network device or the second access management network element the identification of the first CAG accessed by the terminal device and the allowed NSSAI, and sends the allowed NSSAI to the terminal device, and the allowed NSSAI includes one or more
  • the network slices identified by one or more S-NSSAIs are network slices that allow terminal devices to access; one or more S-NSSAIs are associated with the identity of the first CAG.
  • the method further includes:
  • the first access management network element receives a second request message from the terminal device, the second request message includes the first S-NSSAI, and the second request message is used to request the establishment of the first S-NSSAI session; further, the first access management If the network element determines that the identification of the first S-NSSAI and the first CAG is not associated, it sends first indication information to the terminal device, where the first indication information is used to indicate that the identification of the first S-NSSAI and the first CAG is not associated.
  • the method also includes:
  • the first access management network element receives a second request message from the terminal device, the second request message includes the first S-NSSAI, the second request message is used to request the establishment of the first S-NSSAI session, and according to the second request message, Send a third request message to the session management network element, where the third request message includes the first S-NSSAI and the first CAG identifier; and the first access management network element receives the first access management network element returned by the session management network element according to the third request message Second indication information, and sending second indication information to the terminal device, where the second indication information is used to indicate the reason for refusing to establish a session.
  • the method further includes: the first access management network element receives third indication information returned by the session management network element according to the third request message, where the third indication information is used to indicate that the third request message has not Reason for acceptance.
  • the method further includes: the first access management network element receives a second request message from the terminal device, the second request message includes the first S-NSSAI, and the second request message is used to request the establishment of the first S-NSSAI.
  • An S-NSSAI session further, if the first access management network element determines that the first S-NSSAI is not associated with the identity of the first CAG, it sends a fourth request message to the session management network element, and the fourth request message includes Fourth indication information, the fourth indication information is used to indicate that the first S-NSSAI is not associated with the identity of the first CAG; and, the first access management network element receives the fifth indication returned by the session management network element according to the fourth request message Information and send the fifth instruction information to the terminal device, where the fifth instruction information is used to indicate the reason for refusing to establish the session.
  • the method further includes: the first access management network element receives sixth indication information returned by the session management network element according to the fourth request message, where the sixth indication information is used to indicate that the fourth request message has not Reason for acceptance.
  • the method further includes: if the first access management network element determines that the S-NSSAI associated with the identity of the first CAG of the terminal device has changed, updating the allowed NSSAI.
  • an embodiment of the present application provides a communication method, which includes:
  • the second access management network element receives the identification of the first CAG accessed by the terminal device from the access network device, and sends the identification of allowing NSSAI and the first CAG to the first access management network element, or sends it to the access network device
  • the NSSAI is allowed, and the NSSAI is allowed to include one or more S-NSSAIs.
  • the network slice identified by the S-NSSAI is a network slice that allows the terminal device to access; the S-NSSAI is associated with the identity of the first CAG.
  • the second access management network element sends the identification of allowing NSSAI and the first CAG to the first access management network element, or before sending the NSSAI permission to the access network device
  • the method further includes:
  • the incoming management network element obtains the subscription information of the terminal device, requests NSSAI, and sends a first request message to the network slice selection network element.
  • the first request message includes the subscription information, the requested NSSAI, and the identification of the first CAG.
  • the first request message is used for Request permission of NSSAI; and, the second access management network element receives permission of NSSAI from the network slice selection network element.
  • an embodiment of the present application provides a communication method, which includes:
  • the network slice selection network element receives a first request message from the second access management network element, where the first request message includes the subscription information of the terminal device, the NSSAI requesting the terminal device and the identification of the first CAG that the terminal device accesses; and, the network slice selection network The element determines the NSSAI allowed for the terminal device according to the subscription information, the requested NSSAI, and the identity of the first CAG, and sends the allowed NSSAI to the second access management network element, allowing the S-NSSAI in the NSSAI to be associated with the identity of the first CAG.
  • an embodiment of the present application provides a communication method, which includes:
  • the access management network element receives a second request message from the terminal device, the second request message includes the first S-NSSAI, and the second request message is used to request the establishment of the first S-NSSAI session; if the access management network element determines the first S-NSSAI If the S-NSSAI is not associated with the identity of the first CAG accessed by the terminal device, first indication information is sent to the terminal device, where the first indication information is used to indicate that the first S-NSSAI is not associated with the identity of the first CAG.
  • an embodiment of the present application provides a communication method, the method includes: an access management network element receives a second request message from a terminal device, the second request message includes the first S-NSSAI, and the second request message is used to request Establish the first S-NSSAI session; the access management network element sends a third request message to the session management network element according to the second request message, the third request message includes the first S-NSSAI and the first CAG accessed by the terminal device And the access management network element receives the second indication information returned by the session management network element according to the third request message, and sends the second indication information to the terminal device, the second indication information is used to indicate the reason for refusing to establish the session.
  • the method further includes: the access management network element receives third indication information returned by the session management network element according to the third request message, where the third indication information is used to indicate that the third request message is not accepted. the reason.
  • an embodiment of the present application provides a communication method, the method includes: an access management network element receives a second request message from a terminal device, the second request message includes the first S-NSSAI, and the second request message is used to request Establish a first S-NSSAI session; if the access management network element determines that the first S-NSSAI is not associated with the identity of the first CAG accessed by the terminal device, it sends a fourth request message to the session management network element, the fourth request The message includes fourth indication information, which is used to indicate that the first S-NSSAI is not associated with the identity of the first CAG; and the access management network element receives the fifth information returned by the session management network element according to the fourth request message. And send the fifth instruction information to the terminal device, where the fifth instruction information is used to indicate the reason for refusing to establish the session.
  • the method further includes: the access management network element receives sixth indication information returned by the session management network element according to the fourth request message, and the sixth indication information is used to indicate that the fourth request message is not accepted. the reason.
  • an embodiment of the present application provides a communication method, the method includes: the session management network element receives a third request message from the access management network element, the third request message includes the first S-NSSAI, the terminal device access The identity of the first CAG; and, if the session management network element determines that the first S-NSSAI is not associated with the identity of the first CAG, it sends second indication information to the access management network element, the second indication information being used to indicate refusal to establish The reason for the conversation.
  • the method further includes: the session management network element sends sixth indication information to the access management network element, where the sixth indication information is used to indicate the reason why the fourth request message was not accepted.
  • the S-NSSAI in the NSSAI is allowed to be unassociated with the NPN, the accuracy of allowing the NSSAI can be guaranteed, and unauthorized terminal devices can be prevented from accessing the NPN.
  • the first access management network element before the first access management network element sends permission for NSSAI to the terminal device, it further includes: the first access management network element obtains the terminal device's subscription information and requests NSSAI, the subscription information includes the contract NSSAI, and then According to the subscription information, request NSSAI to determine that NSSAI is allowed.
  • an embodiment of the present application provides a communication method, which includes:
  • the first access management network element receives the allowed NSSAI of the terminal device from the access network device or the second access management network element, and sends the allowed NSSAI to the terminal device.
  • the allowed NSSAI includes one or more S-NSSAIs, one or more
  • the network slice identified by the S-NSSAI is a network slice that allows terminal devices to access; one or more S-NSSAIs are not associated with the NPN.
  • the method further includes: the first access management network element receives a second request message from the terminal device, and the second request message includes the first S-NSSAI , The second request message is used to request the establishment of the first S-NSSAI session; and, if it is determined that the first S-NSSAI is associated with the NPN, the first indication information is sent to the terminal device, and the first indication information is used to indicate the first S-NSSAI -NSSAI is associated with NPN.
  • the method further includes: the first access management network element receives a second request message from the terminal device, the second request message includes the first S-NSSAI, and the second request message is used to request the establishment of the first S-NSSAI.
  • An S-NSSAI session the first access management network element sends a third request message to the session management network element according to the second request message, the third request message including the first S-NSSAI; and, the first access management network The element receives the second indication information returned by the session management network element according to the third request message, and sends the second indication information to the terminal device, where the second indication information is used to indicate a reason for refusing to establish a session.
  • the method further includes: the first access management network element receives third indication information returned by the session management network element according to the third request message, where the third indication information is used to indicate that the third request message has not Reason for acceptance.
  • the method further includes: the first access management network element receives a second request message from the terminal device, the second request message includes the first S-NSSAI, and the second request message is used to request the establishment of the first S-NSSAI.
  • An S-NSSAI session if the first access management network element determines that the first S-NSSAI is associated with the NPN, it sends a fourth request message to the session management network element.
  • the fourth request message includes fourth indication information, and the fourth The indication information is used to indicate that the first S-NSSAI is not associated with the NPN; and the first access management network element receives the fifth indication information returned by the session management network element according to the fourth request message, and sends the fifth indication information to the terminal Device, the fifth indication information is used to indicate the reason for refusing to establish the session.
  • the method further includes: the first access management network element receives sixth indication information returned by the session management network element according to the fourth request message, where the sixth indication information is used to indicate that the fourth request message has not Reason for acceptance.
  • an embodiment of the present application provides a communication method, which includes:
  • the second access management network element receives the registration request of the terminal device from the access network device, and sends to the first access management network element or the access network device a permitted NSSAI, and the permitted NSSAI includes one or more S-NSSAI, S-
  • the network slice identified by NSSAI is a network slice that allows terminal devices to access; S-NSSAI is not associated with NPN.
  • the method before the second access management network element sends permission for NSSAI to the first access management network element or the access network device, the method further includes: the second access management network element obtains the contract information of the terminal device, Request NSSAI, and send a first request message to the network slice selection network element, the first request message includes subscription information, request NSSAI, the first request message is used to request permission of NSSAI; and the second access management network element selects from the network slice The network element accepts NSSAI.
  • an embodiment of the present application provides a communication method, which includes:
  • the network slicing selection network element receives the first request message from the second access management network element.
  • the first request message includes the subscription information of the terminal device and the request for NSSAI.
  • the NSSAI is allowed for the terminal device to be determined and sent to the first Second, the access management network element sends the permission NSSAI, and the S-NSSAI in the NSSAI is not associated with the NPN.
  • an embodiment of the present application provides a communication method, which includes:
  • the access management network element receives a second request message from the terminal device.
  • the second request message includes the first S-NSSAI.
  • the second request message is used to request the establishment of the first S-NSSAI session.
  • the second request message is sent to the session management
  • the network element sends a third request message, the third request message includes the first S-NSSAI, and receives the second indication information returned by the session management network element according to the third request message, and sends the second indication information to the terminal device.
  • the indication information is used to indicate the reason for refusing to establish a session.
  • an embodiment of the present application provides a communication method, which includes:
  • an embodiment of the present application provides a communication method, which includes:
  • the method further includes: the session management network element sends third indication information to the access management network element, where the third indication information is used to indicate the reason why the third request message is not accepted.
  • an embodiment of the present application provides a communication method, which includes:
  • the session management network element receives a fourth request message from the access management network element, the fourth request message includes fourth indication information, and the fourth indication information is used to indicate that the first S-NSSAI of the session to be established is associated with the NPN; and, the session The management network element sends fifth indication information to the access management network element according to the fourth request message, where the fifth indication information is used to indicate a reason for refusing to establish a session.
  • the method further includes: the session management network element sends sixth indication information to the access management network element, where the sixth indication information is used to indicate the reason why the fourth request message was not accepted.
  • the access management network element or the session management network element is used to establish the session
  • An S-NSSAI judgment can effectively avoid the problem that the terminal device uses the S-NSSAI associated with the NPN to establish a session, which causes the subsequent failure to normally transmit the service data stream.
  • an embodiment of the present application provides a device, which may be an access management network element.
  • the device has any possible design of the first aspect and the first aspect, any possible design of the second aspect and the second aspect, the third aspect and any possible design of the third aspect, Any possible design of the fifth and fifth aspects, any possible design of the sixth and sixth aspects, any possible design of the seventh and seventh aspects, the eleventh aspect, and Any possible design of the eleventh aspect, any possible design of the twelfth aspect and the twelfth aspect, the thirteenth aspect and any possible design of the thirteenth aspect, the fifteenth aspect And the function of any possible design of the fifteenth aspect, any possible design of the sixteenth aspect and the sixteenth aspect, the seventeenth aspect and any possible design of the seventeenth aspect.
  • This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • an embodiment of the present application provides a device, which may be a session management network element.
  • the device is capable of realizing any one of the eighth aspect and the eighth aspect, any one of the ninth and ninth aspects, and any one of the eighteenth and eighteenth aspects.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • an embodiment of the present application provides a device, which may be a network slice selection network element.
  • the device has the function of realizing any possible design of the fourth aspect and the fourth aspect, and any possible design of the fourteenth aspect and the fourteenth aspect.
  • This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • an embodiment of the present application provides a device, which may be a terminal device.
  • the device has the function of realizing any possible design of the tenth aspect and the tenth aspect. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • an embodiment of the present application provides a communication system, which includes the device described in the twentieth aspect and the device described in the twenty-first aspect, wherein the device described in the twentieth aspect and The devices described in the twenty-first aspect can communicate with each other.
  • the communication system may further include the device described in the 22nd aspect.
  • the communication system may further include the device described in the twenty-third aspect.
  • an embodiment of the present application provides a device, which includes a processor and a memory, the processor is configured to execute instructions stored on the memory, and when the instructions are executed, the device executes the first aspect Various possible designs of any one of the nineteenth aspect.
  • an embodiment of the present application also provides a computer-readable storage medium.
  • the computer-readable storage medium includes instructions. When the instructions are executed, any one of the first aspect to the nineteenth aspect is implemented. Aspects of the various possible designs described methods.
  • the embodiments of the present application also provide a computer program product including instructions, which when run on a computer, enable the computer to execute various possible possibilities in any one of the first to nineteenth aspects. Design the described method.
  • Figure 1a is a schematic diagram of a system architecture to which an embodiment of this application is applicable;
  • FIG. 1b is a schematic diagram of a specific system architecture to which an embodiment of this application is applicable;
  • FIG. 2 is a schematic diagram of a flow corresponding to a communication method provided based on Solution 1 in an embodiment of the application;
  • FIG. 3 is a schematic diagram of a process corresponding to a communication method provided based on solution 2 in an embodiment of the application;
  • FIG. 4 is a schematic diagram of a process corresponding to another communication method provided based on solution 2 in an embodiment of the application;
  • FIG. 5 is a schematic flow diagram corresponding to another communication method provided based on solution 2 in an embodiment of the application.
  • the interface between the terminal device and the access management network element may be called the N1 interface
  • the interface between the AN device and the access management network element may be called the N2 interface
  • the interface between the AN device and the user plane network element It can be called an N3 interface
  • the interface between a user plane network element and a session management network element can be called an N4 interface
  • an interface between a user plane network element and a DN can be called an N6 interface.
  • the names of these interfaces may not change or may be replaced with other names, which is not limited in this application.
  • Unified data management network element responsible for managing the contract information of the terminal.
  • the unified data management network element described in the embodiments of this application can be realized by interacting with the unified data storage network element when implementing its functions.
  • the unified data storage network element is used to store the data required by the unified data management network element to perform its operations.
  • the unified data management network element is used to interact with other network elements.
  • the unified data management network element and the unified data storage network element may be two independent physical entities, and the unified data storage network element may also be integrated in the unified data management network element, which is not specifically limited in comparison with the embodiments of this application.
  • the unified data management network element may be unified data management (UDM).
  • the unified data storage network element may be a unified data repository (UDR).
  • Application function network element It can provide service data of various applications to the control plane network element of the communication network of the operator, or obtain network data information and control information from the control plane network element of the communication network.
  • the application function network element may be an application function (AF).
  • Network warehouse function network element In a 5G communication system, the network warehouse function network element may be a network repository function (NRF).
  • NRF network repository function
  • LTE long-term evolution
  • 5th generation fifth generation
  • 5G fifth generation
  • an embodiment of the present application provides a communication method for realizing the combined use of CAG function and network slicing technology to provide NPN services for terminal devices.
  • the association relationship between CAG and S-NSSAI can be: one CAG is associated with one or more S-NSSAIs, or one S-NSSAI is associated with one or more CAGs.
  • the network slice identified by the S-NSSAI associated with CAG1 can provide NPN services for terminal devices that access CAG1.
  • the network configuration information may be pre-configured in one or more network elements (such as access network equipment, access management network elements, session management network elements, network slice selection network elements, policy control network elements).
  • the network configuration information may also be pre-configured in the terminal device.
  • the capabilities of terminal equipment involved in the embodiments of this application may include: capability 1, which can only access the NPN through a cell associated with CAG (ie CAG cell); and capability 2, which can only be accessed through Cells that are not associated with CAG (ie, non-CAG cells) access PLMN; capability 3, can access NPN through CAG cells, and can also access PLMN through non-CAG cells.
  • the instruction information can be used to indicate that the capability of the terminal device is 1 or 3 above.
  • the instruction information can be stored in the subscription information of the terminal device. If the subscription information of the terminal device does not include the instruction information, it can be understood as The capability of the terminal equipment is capability 2.
  • Network slice selection assistance information It can be understood as a single network slice selection assistance information (single network slice selection assistance information, S-NSSAI) set or S-NSSAI list, which can include One or more S-NSSAI.
  • S-NSSAI single network slice selection assistance information
  • S-NSSAI single network slice selection assistance information
  • S-NSSAI list which can include One or more S-NSSAI.
  • one S-NSSAI may be used to identify a network slice, or the identifier described as a network slice may be S-NSSAI; correspondingly, NSSAI may be understood as a collection or list of network slice identifiers.
  • NSSAI and S-NSSAI may also have other names, which are not limited in the embodiment of the present application.
  • the contract information of the terminal device can be stored in the unified data management network element.
  • the contract information of the terminal device can include the available CAG list of the terminal device, the capability indication of the terminal device, and the contract of the terminal device.
  • NSSAI subscription configuration information
  • the subscription configuration information may include the association relationship between one or more CAG identities in the available CAG list of the terminal device and one or more S-NSSAIs in the contracted NSSAI. Understandably, the subscription configuration The information may also have other names.
  • the subscription information of the terminal device may also include other possible information, which is not specifically limited.
  • the access management network element or the session management network element can determine the first S-NSSAI to establish a session according to the session establishment request of the terminal device. If it is determined that the first S-NSSAI and the terminal device access the first S-NSSAI If the identity of the CAG is not associated, the session can be refused to be established. In this way, through the access management network element or the session management network element to determine the first S-NSSAI to establish a session, it can effectively prevent the terminal device from using the S-NSSAI that is not associated with the first CAG to establish a session, resulting in subsequent failures to normal business operations.
  • the terminal device can be pre-configured with network configuration information.
  • the terminal devices involved in the above-described solution 1, solution 2, and solution 3 may refer to a terminal device with capability 1 or a terminal device with capability 3 and access to CAG.
  • the communication method provided in the embodiment of the present application may include two possible solutions, which are referred to as solution four and solution five for ease of description.
  • the access management network element does not obtain the identification of the CAG that the terminal device is accessing, it sends the NSSAI allowed to the terminal device; allowing one or more S-NSSAIs included in the NSSAI to be unassociated with the NPN.
  • the accuracy of allowing the NSSAI can be guaranteed, and unauthorized terminal devices can be prevented from accessing the NPN.
  • the access management network element or the session management network element can judge the first S-NSSAI to establish a session according to the session establishment request of the terminal device. If it is determined that the first S-NSSAI is associated with the NPN, it can be rejected Establish a session. In this way, through the access management network element or the session management network element to determine the first S-NSSAI to establish a session, it is possible to effectively prevent the terminal device from using the S-NSSAI associated with the NPN to establish a session, resulting in subsequent failure to perform normal service data flow. Transmission problem.
  • the terminal equipment involved in the above scheme 4 and scheme 5 may refer to the terminal equipment with the capability 2 or the terminal equipment with the capability 3 and access to the PLMN.
  • FIG. 2 is a schematic diagram of a process corresponding to a communication method provided by an embodiment of the application, as shown in FIG. 2, including:
  • the access management network element 1 can obtain the identity of the first CAG according to the N2 message.
  • the registration request may also include the requested NSSAI of the terminal device. In this way, the access management network element 1 may also obtain the requested NSSAI.
  • the broadcast message includes only one CAG identifier (for example, the first CAG identifier)
  • the terminal device determines that the accessed CAG is the first CAG
  • the AN message sent to the AN device may not be included. Including the identity of the first CAG.
  • the AN device can also learn that the CAG associated with the cell accessed by the terminal device is the first CAG.
  • the terminal device obtains that the S-NSSAI associated with the first CAG (for example, CAG1) is S-NSSAI 1, S-NSSAI 2, and further, because S-NSSAI 1, S-NSSAI 2 belong to the request NSSAI and contracted NSSAI, therefore, it can be determined that NSSAI is allowed to include S-NSSAI 1, S-NSSAI 2. It should be noted that this is only a brief description of the implementation process of determining the allowable NSSAI. In specific implementation, the access management network element 1 may also consider other possible factors to determine the allowable NSSAI, which is not done in the embodiment of this application. limited.
  • the access management network element 1 may store network configuration information. In this way, the access management network element 1 may request the NSSAI according to the contracted NSSAI and network configuration information. And the identification of the first CAG, it is determined that NSSAI is allowed. Among them, the network configuration information can be seen in Table 1. The specific implementation process is similar to the implementation manner 1, and will not be repeated.
  • step 204a the access management network element 1 sends a permitted NSSAI to the terminal device.
  • the terminal device can receive and store the allowed NSSAI, and then can subsequently select the network slice for service data flow transmission based on the allowed NSSAI.
  • URSP user equipment route selection policy
  • NSSP network slice selection policy
  • the NSSP may include multiple rules.
  • the rules in the NSSP may include the association relationship between the application identifier and the S-NSSAI; in this way, the terminal device may match the NSSP to determine the network slice according to the application identifier to which the service data flow belongs. Understandably, in other possible examples, data network name (DNN), type of service (TOS) or flow ID (fow ID), media access control (media access control) can also be used.
  • DNN data network name
  • TOS type of service
  • Fow ID media access control
  • MAC media access control
  • the above method may further include step 205a to step 207a.
  • Step 205a The access management network element 1 sends the subscription information of the terminal device, the request for the NSSAI and the identification of the first CAG to the policy control network element.
  • Step 206a The policy control network element generates an NSSP according to the subscription information of the terminal device, the requested NSSAI, and the identity of the first CAG, where the S-NSSAI in the NSSP is associated with the identity of the first CAG.
  • the policy control network element determines that the S-NSSAI is associated with the identity of the first CAG and the S-NSSAI belongs to the contract according to the subscription configuration information of the terminal device, the subscription NSSAI, and the request NSSAI.
  • NSSAI and request NSSAI when the S-NSSAI is associated with an application identifier, the S-NSSAI can be used as the S-NSSAI in the NSSP.
  • Step 207a The policy control network element sends an NSSP to the terminal device.
  • the terminal device can receive and store the allowed NSSP, and then can subsequently select network slices for service data stream transmission based on the allowed NSSAI and NSSP.
  • the service data stream to be transmitted belongs to application 1, and the terminal device determines that the S-NSSAI associated with the application 1’s identity is S-NSSAI1 according to the NSSP. Further, if the terminal device determines that S-NSSAI1 belongs to the allowed NSSAI, it can choose The network slice identified by S-NSSAI1 performs service data stream transmission.
  • a possible alternative to the above step 205a is: the access management network element 1 sends the permitted NSSAI of the terminal device to the policy control network element; accordingly, the first step of step 206a
  • the policy control network element receives the allowed NSSAI and generates an NSSP based on the allowed NSSAI.
  • Step 203b The access management network element 1 sends a first request message to the network slice selection network element.
  • the first request message includes the subscription information of the terminal device, the requested NSSAI, and the identification of the first CAG.
  • Step 204b The network slice selection network element determines to allow the NSSAI according to the contract information (the contract information includes the contract NSSAI), the requested NSSAI, and the identity of the first CAG, and allows the S-NSSAI in the NSSAI to be associated with the identity of the first CAG.
  • the contract information includes the contract NSSAI
  • the requested NSSAI includes the contract NSSAI
  • the identity of the first CAG and allows the S-NSSAI in the NSSAI to be associated with the identity of the first CAG.
  • the access management network element 2 is the reselected access management network element serving the terminal device.
  • the access management network element 1 can send a reselection request to the network warehouse function network element.
  • the network warehouse function network element can reselect the access management network element 2 and connect to the management network element 2.
  • the address information is sent to the access management network element 1.
  • the access management network element 1 can send the permitted NSSAI to the access management network element 2 according to the address information of the access management network element 2.
  • the method may further include: step 208b to step 210b, step 208b to step 210b can refer to the description of step 205a to step 207a above, the difference is that step 205a is the access management network element 1, and Step 208b is the access management network element 2.
  • FIG. 3 is a schematic diagram of a process corresponding to a communication method provided by an embodiment of the application, as shown in FIG. 3, including:
  • Step 301 The terminal device selects the first S-NSSAI and sends a second request message to the access management network element.
  • the second request message includes the first S-NSSAI.
  • the second request message is used to request the establishment of the first S-NSSAI.
  • the session can also be described as: the second request message is used to request the establishment of the session in the network slice identified by the first S-NSSAI.
  • the second request message may be a non-access-stratum (NAS) request message, and the NAS request message may include the first S-NSSAI and a session establishment request.
  • NAS non-access-stratum
  • the terminal device may be rejected.
  • the terminal device may be rejected.
  • sending a second response message to the terminal device the second response message includes first indication information, and the first indication information is used to indicate that the first S-NSSAI is not associated with the first CAG.
  • the terminal device may update the NSSP and/or allow NSSAI according to the first indication information.
  • the access management network element After the access management network element receives the second request message sent by the terminal device, it can determine whether the first S-NSSAI is associated with the first CAG, if not, it can no longer forward the session establishment to the session management network element
  • the request on the one hand, can effectively avoid the problem that the terminal device uses the S-NSSAI that is not associated with the first CAG to establish a session, which causes the subsequent failure to transmit the service data stream normally; on the other hand, it is no longer forwarded to the session management network element Session establishment request, which can save network resources.
  • Step 402 The access management network element receives the second request message, and sends a third request message to the session management network element.
  • the third request message includes the first S-NSSAI, the identification of the first CAG, and the session establishment request.
  • the third request message further includes an indication whether the terminal device is using the CAG cell.
  • the third response message may be Nsmf_PDUSession_CreateSMContext Response.
  • the third response message may include second indication information, and the second indication information is used to indicate a reason for refusing to establish a session.
  • the third response message may further include third indication information, and the third indication information is used to indicate the reason why the third request message was not accepted.
  • the specific implementation of the session management network element determining whether the first S-NSSAI is associated with the first CAG may refer to the description of the access management network element determining whether the first S-NSSAI is associated with the first CAG.
  • the access management network element may analyze the third indication information to learn the reason why the third request message was not accepted, and the second indication information is the information sent by the session management network element to the terminal device. Therefore, the access management network element does not parse the second indication information, but directly forwards the second indication information to the terminal device.
  • the terminal device may update the NSSP and/or allow the NSSAI according to the second indication information.
  • the access management network element After the access management network element receives the second request message sent by the terminal device, it can send the first S-NSSAI, the identification of the first CAG, and the session establishment request to the session management network element, and the session management network element
  • the first S-NSSAI and the identity of the first CAG are judged whether the first S-NSSAI and the first CAG are related. If they are not, the reason for refusing to establish a session can be returned to the terminal device, which can effectively prevent the terminal device from using the S-NSSAI that is not associated with the first CAG.
  • the establishment of a session causes the subsequent failure to transmit the service data stream normally.
  • Step 501 The terminal device selects the first S-NSSAI, and sends a second request message to the access management network element.
  • the second request message may include the first S-NSSAI and the session establishment request.
  • Step 502 The access management network element receives a second request message, and if it is determined that the first S-NSSAI is not associated with the first CAG accessed by the terminal device, a fourth request message is sent to the session management network element.
  • the fourth request message includes The fourth indication information is used to indicate that the first S-NSSAI is not associated with the identity of the first CAG.
  • the fourth request message may also include the first S-NSSAI.
  • the fourth request message further includes an indication whether the terminal device is using the CAG cell.
  • the session management network element determines whether to accept the session or the fourth request message according to an indication of whether the terminal device is using the CAG cell; if the terminal device is using the CAG cell, it further determines according to the fourth indication information.
  • the access management network element can analyze the sixth indication information to learn the reason why the fourth request message was not accepted, and the fifth indication information is the information sent by the session management network element to the terminal device. Therefore, the access management network element does not parse the fifth indication information, but directly forwards the fifth indication information to the terminal device.
  • the terminal device may update the NSSP and/or allow NSSAI according to the second indication information.
  • the access management network element After the access management network element receives the second request message sent by the terminal device, it can send fourth indication information to the session management network element, and the session management network element then performs corresponding operations based on the fourth indication information , Without the need to judge whether the identification of the first S-NSSAI and the first CAG are associated. On the one hand, it can save the processing resources of the session management network element, and on the other hand, it can effectively avoid the use of the terminal equipment that is not associated with the first CAG.
  • the S-NSSAI establishes a session and causes the subsequent failure to transmit the service data stream normally.
  • FIG. 6 is a schematic diagram of a process corresponding to a communication method provided by an embodiment of the application, as shown in FIG. 6, including:
  • Step 601 The terminal device obtains the identifier and network configuration information of the first CAG that is accessed, where the network configuration information is used to indicate one or more S-NSSAIs associated with the CAG, and the one or more CAGs include the first CAG. CAG.
  • the AN device can send a broadcast message in the cell, and the broadcast message includes one or more CAG identities.
  • the terminal device can use one or more CAG identities (including the first CAG) in the broadcast message.
  • the ID of the first CAG) and the CAG list (including the ID of the first CAG), and the CAG that is accessed is the ID of the first CAG.
  • the network configuration information can be pre-configured in the terminal device, so that the terminal device can obtain the network configuration information.
  • Step 602 The terminal device determines to request an NSSAI according to the CAG identifier and network configuration information, and the S-NSSAI included in the requested NSSAI is associated with the identifier of the first CAG.
  • Step 603 The terminal device sends an AN message to the AN device.
  • the AN message may include the identification of the first CAG and the registration request.
  • Step 604 The AN device receives the AN message and sends an N2 message to the access management network element.
  • the N2 message includes the identification of the first CAG and the registration request.
  • Step 605 The access management network element receives the N2 message and obtains permission for NSSAI.
  • the specific implementation of the access management network element obtaining the permission of NSSAI can refer to the prior art, which will not be repeated here.
  • step 606 the access management network element will allow the NSSAI to be sent to the terminal device.
  • the terminal device considers the network configuration information when determining the request for NSSAI, so that the S-NSSAI included in the determined request NSSAI is associated with the identity of the first CAG, so that the subsequent NSSAI can be accurately determined based on the request NSSAI.
  • scheme one (such as the scheme shown in Figure 2), scheme two (such as the scheme shown in Figure 3, Figure 4 or Figure 5) and scheme three (such as the scheme shown in Figure 6) It can be implemented separately or in combination, for example, scheme one and scheme two, or scheme three and scheme two.
  • scheme one and scheme two when scheme one and scheme two are implemented in combination, scheme one can be performed first, and scheme two can be performed first, that is, the steps in Figure 2 are performed first, and then the steps in Figure 3, Figure 4, or Figure 5 are performed.
  • the steps performed in the first solution are steps 201 to 207a in FIG. 2, the access management network element involved in FIG. 3, FIG. 4, or FIG. 5 may be the access management network element 1 in FIG.
  • the access management network element involved in FIG. 3, FIG. 4, or FIG. 5 may be the access management network element 2 in FIG. 2.
  • FIG. 3, FIG. 4, or FIG. 5, other content than the differences described above can be cross-referenced.
  • the management network element is accessed (for scheme 1, if the steps performed in scheme 1 2 is step 201 to step 207a, then the access management network element here can be access management network element 1. If the steps performed in solution 1 are step 201 to step 210b in Figure 2, then the access management network element may be an access management network element. 2) If it is determined that the identity of the first CAG accessed by the terminal device is invalid, it can trigger the de-registration of the terminal device; among them, the reason for the failure of the first CAG identity may be There are many types, for example, the first CAG is no longer an available CAG for the terminal device.
  • the terminal device after the terminal device establishes the first S-NSSAI session, if the access management network element determines that the first S-NSSAI is invalid, the terminal device’s session release can be triggered; among them, the first S-NSSAI becomes invalid There may be many reasons for this.
  • the contracted NSSAI of the terminal device has changed, and the changed contracted NSSAI does not include the first S-NSSAI, that is, the first S-NSSAI is no longer the contracted NSSAI of the terminal device; another example is the network configuration The information changes, and the first S-NSSAI and the first CAG in the changed network configuration information are no longer associated.
  • the access management network element determines that the subscription information of the terminal device has changed, it can determine the allowable NSSAI and/or configuration of the terminal device Whether the NSSAI needs to be updated, if it is determined that the NSSAI needs to be updated, the update instruction information 1 can be sent to the terminal device.
  • the update instruction information 1 can include the updated allowable NSSAI; if it is determined that the configuration of the NSSAI needs to be updated, the update can be sent to the terminal device Instruction information 2.
  • the update instruction information 2 can include the updated configuration NSSAI; if it is determined that both the allowed NSSAI and the configuration NSSAI need to be updated, the update instruction information 3 can be sent to the terminal device.
  • the contracted NSSAI before the terminal equipment change includes S-NSSAI1, S-NSSAI2, S-NSSAI3, S-NSSAI4, and S-NSSAI5, among which S-NSSAI1, S-NSSAI2, S-NSSAI5 and CAG1 (CAG1 is the terminal The CAG connected to the device is associated, and S-NSSAI3, S-NSSAI4 are associated with CAG2;
  • the changed contract NSSAI includes S-NSSAI1, S-NSSAI2, S-NSSAI3, S-NSSAI4, S-NSSAI6, of which S-NSSAI1, S-NSSAI2 is associated with CAG1, S-NSSAI3 and S-NSSAI4 are associated with CAG2, and S-NSSAI6 is associated with CAG3.
  • the CAG that the terminal device accesses is identified as CAG1, the S-NSSAI associated with CAG1 in the network configuration information before the change includes S-NSSAI1 and S-NSSAI2, and the S-NSSAI associated with CAG1 in the network configuration information after the change includes S-NSSAI1, S-NSSAI2 and S-NSSAI3 (S-NSSAI3 belongs to the contracted S-NSSAI of the terminal device); if the allowed NSSAI of the terminal device includes S-NSSAI1 and S-NSSAI2, then it can be determined that the NSSAI needs to be updated , The updated allowable NSSAI can include S-NSSAI1, S-NSSAI2, and S-NSSAI3.
  • the access management network element can also send update instruction information 4 to the terminal device.
  • the update instruction information 4 is used to indicate that the network configuration information occurs.
  • Change for example, the update instruction information 4 may include changed network configuration information, so that the terminal device can update the network configuration information according to the update instruction information 4.
  • Step 701 The access management network element 1 receives the registration request of the terminal device from the AN device.
  • the AN device can send a broadcast message in the cell.
  • the broadcast message can include one or more PLMN identities.
  • the terminal device can select a PLMN identity and send the AN message to the AN device.
  • the message may include the registration request and the identification of the selected PLMN.
  • the AN device can select the access management network element for the terminal device (for example, select the access management network element 1), and send an N2 message to the access management network element 1.
  • the N2 message includes the registration request And PLMN logo.
  • the registration request may include the requested NSSAI of the terminal device. In this way, the access management network element 1 may also obtain the requested NSSAI.
  • the access management network element 1 may also obtain the contract information of the terminal device from the unified data management network element.
  • the access management network element 1 may also obtain the NSSAI subscribed by the terminal device, and determine whether it can serve each subscribed S-NSSAI in the requested NSSAI, if it can service each subscribed S-NSSAI in the requested NSSAI , Then perform steps 703a and 704a, otherwise, perform steps 703b to 707b.
  • Step 901 The terminal device selects the second S-NSSAI, and sends a second request message to the access management network element.
  • the third request message further includes an indication whether the terminal device is using the CAG cell.
  • the access management network element may analyze the third indication information to learn the reason why the third request message was not accepted, and the second indication information is the information sent by the session management network element to the terminal device. Therefore, the access management network element does not parse the second indication information, but directly forwards the second indication information to the terminal device.
  • FIG. 10 is a schematic diagram of a process corresponding to another communication method provided by an embodiment of this application, as shown in FIG. 10, including:
  • Step 1001 The terminal device selects the second S-NSSAI, and sends a second request message to the access management network element.
  • the second request message may include the second S-NSSAI and the session establishment request.
  • Step 1002 The access management network element receives the second request message, and if it is determined that the second S-NSSAI is associated with the NPN, then sends a fourth request message to the session management network element, the fourth request message includes fourth indication information, and the fourth indication The information is used to indicate that the second S-NSSAI is associated with the NPN.
  • the fourth request message further includes an indication whether the terminal device is using the CAG cell.
  • Step 1003 After receiving the fourth request message, the session management network element sends a fourth response message to the access management network element.
  • the fourth response message may include fifth indication information, and the fifth indication information is used to indicate the reason for refusing to establish the session. .
  • the fourth response message may further include sixth indication information, and the sixth indication information is used to indicate the reason why the fourth request message was not accepted.
  • the session management network element judges whether to accept the session or the fourth request message according to an indication of whether the terminal device is using the CAG cell; if the terminal device is not using the CAG cell, further judges according to the fifth indication information.
  • Step 1004 The access management network element receives the fourth response message, and sends fifth indication information to the terminal device.
  • the terminal device may update the NSSP and/or allow NSSAI according to the second indication information.
  • the access management network element After the access management network element receives the second request message sent by the terminal device, it can send fourth indication information to the session management network element, and the session management network element then performs corresponding operations based on the fourth indication information. There is no need to judge whether the second S-NSSAI and NPN are associated. On the one hand, it can save the processing resources of the session management network element. On the other hand, it can effectively prevent the terminal device from using the S-NSSAI associated with the NPN to establish a session. The subsequent problem that the service data stream cannot be transmitted normally.
  • scheme four (such as the scheme shown in FIG. 7) and scheme five (such as the scheme shown in FIG. 8, 9 or FIG. 10) can be implemented separately or in combination.
  • scheme four may be executed first, and scheme five may be executed later, that is, the steps in FIG. 7 are executed first, and then the steps in FIG. 8, FIG. 9 or FIG. 10 are executed.
  • the steps performed in the fourth solution are steps 701 to 707a in FIG. 7, then the access management network element involved in FIG. 8, FIG. 9 or FIG. 10 may be the access management network element 1 in FIG. ; If the steps performed in the fourth solution are steps 701 to 710b in FIG.
  • the access management network element involved in FIG. 8, FIG. 9 or FIG. 10 may be the access management network element 2 in FIG. 7.
  • the solutions shown in FIG. 8, FIG. 9 or FIG. 10 other content than the differences described above can be cross-referenced.
  • the policy control network element is PCF
  • the network slice selection network element is NSSF
  • the user plane network element is UPF
  • the session management network element is SMF
  • the access management network element is AMF
  • the unified data management network element is UDM as examples. Be explained.
  • Step 1101 The AN device sends a broadcast message in the cell.
  • the broadcast message includes one or more CAG identities, such as CAG1, CAG2, and CAG3.
  • Step 1102 The terminal device receives the broadcast message, and according to the CAG identifier included in the broadcast message and the CAG list stored by the terminal device (for example, the CAG list includes CAG1 and CAG4), select the CAG to be accessed as CAG1, and send it to the AN device AN message, AN message includes registration request and CAG1.
  • the AN message may also include a request for NSSAI.
  • Step 1103 the AN device sends an N2 message to AMF1, and the N2 message includes a registration request and CAG1.
  • the registration request may include requesting NSSAI.
  • Step 1104 AMF1 receives the N2 message, and can obtain the subscription information of the terminal device from UDM.
  • AMF1 obtains the subscription information of the terminal device by calling the Nudm_SDM_Get service of UDM.
  • the subscription information of the terminal device includes the available CAG list of the terminal device.
  • AMF1 may send a request message 1 to the NSSF when it cannot serve the S-NSSAI requesting each subscription in the NSSAI.
  • Step 1107 The NSSF determines to allow the NSSAI according to the contract NSSAI, request NSSAI, and CAG1, and allow the S-NSSAI included in the NSSAI to be associated with CAG1.
  • AMF2 can call the Npcf_UEPolicyControl_Create service of PCF and send Npcf_UEPolicyControl_Create Request (including CAG1, subscription information and request NSSAI) to PCF.
  • Npcf_UEPolicyControl_Create Request including CAG1, subscription information and request NSSAI
  • Step 1112 The PCF sends an NSSP to the terminal device.
  • Step 1114 The terminal device selects the first S-NSSAI according to the NSSP and the allowed NSSAI, and sends a request message 2 to the AMF2; where the request message 2 includes the first S-NSSAI and the session establishment request.
  • Step 1116 If AMF2 determines that the first S-NSSAI is not associated with CAG1, it returns a response message 2 to the terminal device.
  • the response message 2 may include a reject cause code.
  • the reject cause code may be The first indication information is used to indicate that the first S-NSSAI is not associated with the first CAG.
  • step numbers involved in the embodiments of the present application are only a possible example of the execution process, and do not constitute a restriction on the order of execution of each step.
  • each network element includes a hardware structure and/or software module (or unit) corresponding to each function.
  • the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the present invention.
  • FIG. 12 shows a possible exemplary block diagram of a device involved in an embodiment of the present application, and the device 1200 may exist in the form of software.
  • the apparatus 1200 may include: a processing unit 1202 and a communication unit 1203.
  • the processing unit 1202 is used to control and manage the actions of the device 1200.
  • the communication unit 1203 is used to support communication between the apparatus 1200 and other devices or network elements.
  • the communication unit 1203 is also called a transceiving unit, and may include a receiving unit and/or a sending unit, which are used to perform receiving and sending operations, respectively.
  • the device 1200 may further include a storage unit 1201 for storing program codes and data of the device 1200.
  • the receiving unit is configured to receive the identification of the first CAG accessed by the terminal device and the permitted NSSAI from the access network device or the second access management network element; the sending unit is configured to send the permitted NSSAI to the terminal device,
  • the allowed NSSAI includes one or more S-NSSAIs, and the network slices identified by one or more S-NSSAIs are network slices allowed to be accessed by the terminal device; one or more S-NSSAIs are associated with the identity of the first CAG.
  • the receiving unit is further configured to receive a second request message from the terminal device, the second request message includes the first S-NSSAI, and the second request message is used to request establishment of the first S-NSSAI session;
  • the sending unit is further configured to send first indication information to the terminal device, where the first indication information is used to indicate that the first S-NSSAI and the first CAG The identity is not associated.
  • the receiving unit is further configured to receive a second request message from the terminal device, the second request message includes the first S-NSSAI, and the second request message is used to request establishment of the first S-NSSAI session;
  • the sending unit is further configured to send a third request message to the session management network element according to the second request message, the third request message including the identification of the first S-NSSAI and the first CAG; the receiving unit is also used to receive the session management network element according to The second indication information returned by the third request message and the second indication information is sent to the terminal device, where the second indication information is used to indicate the reason for refusing to establish the session.
  • the receiving unit is further configured to receive third indication information returned by the session management network element according to the third request message, where the third indication information is used to indicate a reason why the third request message was not accepted.
  • the receiving unit is further configured to receive a second request message from the terminal device, the second request message includes the first S-NSSAI, and the second request message is used to request the establishment of the first S-NSSAI session; if The processing unit determines that the identification of the first S-NSSAI and the first CAG is not associated, and the sending unit is further configured to send a fourth request message to the session management network element.
  • the fourth request message includes fourth indication information.
  • the receiving unit is further configured to receive the fifth indication information returned by the session management network element according to the fourth request message, and send the fifth indication information to the terminal device,
  • the fifth indication information is used to indicate the reason for refusing to establish a session.
  • the processing unit is configured to update the allowed NSSAI if it is determined that the S-NSSAI associated with the identity of the first CAG of the terminal device has changed.
  • the apparatus 1200 may be the access management network element in any of the foregoing embodiments, or may also be a chip set in the access management network element.
  • the processing unit 1202 may support the apparatus 1200 to perform the actions of accessing the management network element in the foregoing method examples.
  • the processing unit 1202 mainly supports the apparatus 1200 to perform internal actions of the access management network element in the method example, and the communication unit 1203 may support the communication between the apparatus 1200 and other devices or network elements.
  • the receiving unit is configured to receive the identification of the first CAG accessed by the terminal device from the access network device; the sending unit is configured to send the identification of allowing NSSAI and the first CAG to the first access management network element, or Sending the allowed NSSAI to the access network device, the allowed NSSAI includes one or more S-NSSAIs, the network slice identified by the S-NSSAI is the network slice that allows the terminal device to access; the S-NSSAI is associated with the identity of the first CAG.
  • modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • the functional modules in the embodiments of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.
  • FIG. 13 is a schematic structural diagram of a terminal device 1300 according to an embodiment of the application. For ease of description, FIG. 13 only shows the main components of the terminal device. As shown in FIG. 13, the terminal device 1300 includes a processor, a memory, a control circuit, an antenna, and an input and output device. The terminal device 1300 may be applied to the system architecture shown in FIG. 1a or FIG. 1b to perform the functions of the terminal device in the foregoing method embodiment.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 13 only shows a memory and a processor. In actual terminal devices, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data can be built in the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the apparatus 1400 may include one or more processors 1401, and the processor 1401 may also be referred to as a processing unit, which may implement certain control functions.
  • the processor 1401 may be a general-purpose processor or a special-purpose processor, for example, a baseband processor.
  • the processor 1401 may also store instructions and/or data 1403, and the instructions and/or data 1403 may be executed by the processor, so that the apparatus 1400 executes the method described in the foregoing method embodiments. Methods.
  • the apparatus 1400 may include a circuit, and the circuit may implement the sending or receiving function in the foregoing method embodiment.
  • the device 1400 may include one or more memories 1402, on which instructions 1404 may be stored, and the instructions may be executed on the processor, so that the device 1400 executes the descriptions in the above embodiments.
  • data may also be stored in the memory.
  • instructions and/or data may also be stored in the processor.
  • the processor and memory can be provided separately or integrated together.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose central processing unit (central processing unit, CPU), general-purpose processor, digital signal processing (digital signal processing, DSP), application specific integrated circuits (ASIC), field programmable gate array Field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof; it can also be a combination that implements computing functions, such as a combination of one or more microprocessors, DSP and micro-processing The combination of the device and so on.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory or storage unit in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server integrating one or more available media.
  • the usable medium may be a magnetic medium, such as a floppy disk, a hard disk, and a magnetic tape; it may also be an optical medium, such as a DVD; it may also be a semiconductor medium, such as a solid state disk (SSD).
  • the steps of the method or algorithm described in the embodiments of the present application can be directly embedded in hardware, a software unit executed by a processor, or a combination of the two.
  • the software unit can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other storage medium in the field.
  • the storage medium may be connected to the processor, so that the processor can read information from the storage medium, and can store and write information to the storage medium.
  • the storage medium may also be integrated into the processor.
  • the processor and the storage medium can be arranged in an ASIC, and the ASIC can be arranged in a terminal device.
  • the processor and the storage medium may also be arranged in different components in the terminal device.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention se rapporte au domaine technique des communications, et concerne un procédé et un appareil de communication. Le procédé comprend les étapes suivantes : un premier élément de réseau de gestion d'accès reçoit un identifiant d'un premier CAG auquel a accédé un dispositif terminal à partir d'un dispositif de réseau d'accès, et envoie les NSSAI autorisées au dispositif terminal, les NSSAI autorisées comprenant une ou plusieurs S-NSSAI, des tranches de réseau identifiées par lesdites S-NSSAI étant des tranches de réseau permettant l'accès au dispositif de terminal, et lesdites S-NSSAI étant associées à l'identifiant du premier CAG. Selon le procédé, étant donné que les S-NSSAI dans les NSSAI autorisées sont associées à l'identifiant du premier CAG, la précision des NSSAI autorisées peut être garantie, et la validité de la sélection des S-NSSAI par le dispositif terminal est améliorée, ce qui facilite la transmission normale ultérieure de flux de données de service.
PCT/CN2020/082844 2019-04-01 2020-04-01 Procédé et appareil de communication WO2020200254A1 (fr)

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