WO2020063213A1 - 本地局域网通信方法、设备及系统 - Google Patents

本地局域网通信方法、设备及系统 Download PDF

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Publication number
WO2020063213A1
WO2020063213A1 PCT/CN2019/101980 CN2019101980W WO2020063213A1 WO 2020063213 A1 WO2020063213 A1 WO 2020063213A1 CN 2019101980 W CN2019101980 W CN 2019101980W WO 2020063213 A1 WO2020063213 A1 WO 2020063213A1
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WIPO (PCT)
Prior art keywords
terminal
network element
local area
5glan
session
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PCT/CN2019/101980
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English (en)
French (fr)
Inventor
朱强华
张艳平
姚琦
吴问付
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华为技术有限公司
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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 EP19868089.4A priority Critical patent/EP3846507A4/en
Priority to JP2021517262A priority patent/JP7139522B2/ja
Priority to CN201980064557.2A priority patent/CN113243116A/zh
Publication of WO2020063213A1 publication Critical patent/WO2020063213A1/zh
Priority to US17/216,098 priority patent/US20210218585A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1403—Architecture for metering, charging or billing
    • H04L12/1407—Policy-and-charging control [PCC] architecture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/66—Policy and charging system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/80—Rating or billing plans; Tariff determination aspects
    • H04M15/8033—Rating or billing plans; Tariff determination aspects location-dependent, e.g. business or home
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/80—Rating or billing plans; Tariff determination aspects
    • H04M15/8038—Roaming or handoff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/80—Rating or billing plans; Tariff determination aspects
    • H04M15/8044—Least cost routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • 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
    • H04W48/04—Access restriction performed under specific conditions based on user or terminal location or mobility data, e.g. moving direction, speed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2801—Broadband local area networks
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/22—Manipulation of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20—Transfer of user or subscriber data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a local area network communication method, device, and system.
  • the 5th generation (5G) local area network (5GLAN) service is a service provided by the current 5G network. It is mainly used in home communications, corporate office, factory manufacturing, vehicle networking, grid transformation, and public security agencies. .
  • the 5GLAN service can provide two or more terminals in a group of terminals with an Internet protocol (IP) type or a non-IP type (such as an Ethernet type) private communication.
  • IP Internet protocol
  • the devices in the factory can form a group, and the devices in the group can send Ethernet data packets to each other; or, the office equipment (such as mobile phones, computers, or laptops) of employees in a department of the enterprise can form a group. Send IP packets to each other, and so on. If two terminals are not in the same group, they cannot communicate with each other.
  • the 5GLAN service is limited in area, that is, there is a 5GLAN service area.
  • a 5G network provides a specific 5GLAN service for the equipment of a factory.
  • the 5G network should prohibit the device from using this 5GLAN service according to the location of the device; when the device moves to this 5GLAN Service area, the 5G network should provide 5GLAN services for the device based on the location of the device.
  • a protocol data unit (PDU) session of a terminal can only be associated with one data network.
  • DNN data network name
  • LADN local network data network
  • AF application funciton (AF) influence
  • the above LADN mechanism or AF impact mechanism is session granular. If a session can connect to multiple 5GLAN services, the above LADN mechanism or AF impact mechanism is not available. At this time, how to limit the communication of the terminal within the service area of the 5GLAN based on the terminal location is a problem that needs to be solved at present.
  • the embodiments of the present application provide a local area network communication method, device, and system, which can limit a terminal's communication in one or more local area networks based on the location of the terminal when one session of the terminal is connected to multiple local area network services.
  • a local area network communication method includes: a policy control network element receives a first event report from a session management network element, the first event report including a first event and indication information of a first local area network
  • the first event includes a terminal moving in or out of a service area of the first local area network;
  • the policy control network element updates a first policy and charging control PCC rule corresponding to the terminal according to the first event and the instruction information;
  • the The policy control network element sends the updated first PCC rule to the session management network element.
  • the policy control network element can update the first PCC rule corresponding to the terminal after receiving the first event report including the first event and the indication information of the first local area network
  • the session management network element can be triggered according to the update
  • the first PCC rule is to modify the session of the terminal. Therefore, in a case where one session of a terminal is connected to multiple local area network services, it is possible to restrict communication of the terminal within one or more local area networks based on the location of the terminal.
  • the method before the policy control network element receives the first event report from the session management network element, the method further includes: the policy control network element sends a first subscription request message to the session management network element, The first subscription request message carries indication information of the first local area network and is used to request to subscribe to a mobility event of the terminal related to the first local area network. Based on this solution, the policy control network element may subscribe to the mobility event of the terminal related to the first local area network.
  • the first subscription request message further carries service area information of the first local area network.
  • the policy control network element updates the first PCC rule corresponding to the terminal according to the first event and the instruction information, including: the policy control network element determines the address of the terminal according to the instruction information The policy controls the network element to update the first PCC rule corresponding to the terminal according to the first event and the address of the terminal. Based on this solution, the policy control network element may update the first PCC rule corresponding to the terminal.
  • the policy controlling the network element to update the first PCC rule corresponding to the terminal according to the first event and the instruction information includes: the policy controlling the network element according to the instruction information of the first local area network, Determining the virtual local area network identifier of the terminal; the policy controlling network element updates the first PCC rule corresponding to the terminal according to the first event and the virtual local area network identifier of the terminal. Based on this solution, the policy control network element may update the first PCC rule corresponding to the terminal.
  • a local area network communication method includes: a session management network element sending a first event report to a policy control network element, the first event report including the first event and indication information of the first local area network,
  • the first event includes a terminal moving in or out of a service area of the first local area network;
  • the session management network element receiving an updated first policy and charging control PCC rule corresponding to the terminal from the policy control network element;
  • the session modifies the session of the terminal according to the updated first PCC rule.
  • the policy control network element can update the first PCC rule to the session management network element.
  • the network element sends the updated first PCC rule. Furthermore, the session management network element may modify the session of the terminal according to the updated first PCC rule. Therefore, in a case where one session of a terminal is connected to multiple local area network services, it is possible to restrict communication of the terminal within one or more local area networks based on the location of the terminal.
  • the method before the session management network element sends the first event report to the policy control network element, the method further includes: the session management network element receives a first subscription request from the policy control network element Message, the first subscription request message carries indication information of the first local area network, and is used to request to subscribe to a mobility event of the terminal related to the first local area network. Based on this solution, the policy control network element may subscribe to the mobility event of the terminal related to the first local area network.
  • the first subscription request message further carries service area information of the first local area network.
  • the session management network element modifies the session of the terminal according to the updated first PCC rule, including: if the updated first PCC rule indicates that the terminal is allowed to be in the first The local area network routes data, and the session management network element instructs the user plane function network element to set a first routing rule, wherein the first routing rule includes an address of the terminal or a virtual local area network identifier of the terminal.
  • the session management network element can modify the session of the terminal according to the location of the terminal.
  • the method further includes: if the session of the terminal has been deactivated, the session management network element activates a user plane connection of the terminal's session. Based on this solution, the session management network element can modify the session of the terminal according to the location of the terminal.
  • the session management network element modifies the session of the terminal according to the updated first PCC rule, including: if the updated first PCC rule indicates that the terminal is not allowed in the first A local area network routing data, the session management network element instructs the user plane function network element to delete a first routing rule, wherein the first routing rule includes an address of the terminal or a virtual local area network identifier of the terminal. Based on this solution, the session management network element can modify the session of the terminal according to the location of the terminal.
  • the method further includes: if the terminal's session only allows access to the first local area network, the session management network element deactivates a user plane connection of the terminal's session or directly releases the terminal's session . Based on this solution, the session management network element can modify the session of the terminal according to the location of the terminal.
  • a local area network communication method includes: a session management network element receiving a first event report from a mobile management network element, the first event report including the first event and indication information of the first local area network
  • the first event includes a terminal moving into or out of a service area of the first local area network; the session management network element modifies a session of the terminal according to the first event and indication information of the first local area network.
  • the session management network element can receive the first event report including the first event and the indication information of the first local area network, and can perform the session of the terminal according to the first event and the indication information of the first local area network. modify. Therefore, in a case where one session of a terminal is connected to multiple local area network services, it is possible to restrict communication of the terminal within one or more local area networks based on the location of the terminal.
  • the method before the session management network element receives the first event report from the mobile management network element, the method further includes: the session management network element sends a first subscription request message to the mobile management network element,
  • the first subscription request message carries indication information of the first local area network and is used to request to subscribe to a mobility event of the terminal related to the first local area network.
  • the session management network element can subscribe to the mobility event of the terminal related to the first local area network.
  • the first subscription request message further carries service area information of the first local area network.
  • the session management network element modifies the session of the terminal according to the first event and the indication information of the first local area network, including: if the session management network element is based on the first event and the first local area network, The indication information of the local area network determines that the terminal is allowed to route data on the first local area network, and the session management network element instructs the user plane function network element to set a first routing rule, wherein the first routing rule includes an address of the terminal or the terminal Virtual local area network identification. Based on this solution, the session management network element can modify the session of the terminal according to the location of the terminal.
  • the method further includes: if the session of the terminal has been deactivated, the session management network element activates a user plane connection of the terminal's session. Based on this solution, the session management network element can modify the session of the terminal according to the location of the terminal.
  • the session management network element modifies the session of the terminal according to the first event and the indication information of the first local area network, including: if the session management network element is based on the first event and the first local area network, The indication information of the local area network determines that the terminal is not allowed to route data on the first local area network, and the session management network element instructs the user plane function network element to delete a first routing rule, where the first routing rule includes an address of the terminal or the The virtual local area network identifier of the terminal. Based on this solution, the session management network element can modify the session of the terminal according to the location of the terminal.
  • the method further includes: if the terminal's session only allows access to the first local area network, the session management network element deactivates a user plane connection of the terminal's session or directly releases the terminal's session . Based on this solution, the session management network element can modify the session of the terminal according to the location of the terminal.
  • a policy control network element which has the function of implementing the method described in the first aspect above.
  • This function can be realized by hardware, and can also be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • a policy control network element including: a processor and a memory; the memory is configured to store computer execution instructions, and when the policy control network element is running, the processor executes the computer execution instructions stored in the memory To enable the policy control network element to execute the local area network communication method according to any one of the first aspects.
  • a policy control network element including: a processor; the processor is configured to be coupled to the memory and read an instruction in the memory, and then execute any one of the foregoing first aspects according to the instruction.
  • the local area network communication method including: a processor; the processor is configured to be coupled to the memory and read an instruction in the memory, and then execute any one of the foregoing first aspects according to the instruction.
  • a computer-readable storage medium stores instructions that, when run on a computer, enable the computer to perform the quality of service according to any one of the first aspects. Monitoring methods.
  • a computer program product containing instructions which, when run on a computer, enables the computer to execute the local area network communication method according to any one of the first aspects.
  • an apparatus for example, the apparatus may be a chip system
  • the apparatus includes a processor, and is configured to support a policy control network element to implement the functions involved in the first aspect, for example, according to the first aspect.
  • the event and the indication information update the first policy and charging control PCC rule corresponding to the terminal.
  • the device further includes a memory, which is configured to store program instructions and data necessary for the policy control network element.
  • the device is a chip system, it may be composed of a chip, or it may include a chip and other discrete devices.
  • a session management network element has a function of implementing the method described in the second aspect or the third aspect.
  • This function can be realized by hardware, and can also be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • a session management network element including: a processor and a memory; the memory is configured to store a computer execution instruction, and when the session management network element is running, the processor executes the computer execution stored in the memory; An instruction to make the session management network element execute the local area network communication method according to any one of the second aspect or the third aspect.
  • a session management network element including: a processor; the processor is configured to be coupled with a memory, and after reading an instruction in the memory, execute the second aspect or the third aspect according to the instruction.
  • the local area network communication method according to any one of the aspects.
  • a computer-readable storage medium stores instructions, and when the computer-readable storage medium runs on the computer, the computer can execute any one of the second aspect or the third aspect.
  • the method of monitoring service quality is provided.
  • a computer program product containing instructions which, when run on a computer, enables the computer to execute the local area network communication method according to any one of the second aspect or the third aspect.
  • a device for example, the device may be a chip system
  • the device includes a processor, and is configured to support a session management network element to implement the functions involved in the second or third aspect, for example, Updating the first policy and charging control PCC rule corresponding to the terminal according to the first event and the indication information.
  • the device further includes a memory, and the memory is configured to store program instructions and data necessary for the session management network element.
  • the device is a chip system, it may be constituted by a chip, or it may include a chip and other discrete devices.
  • a communication system in a sixteenth aspect, includes a session management network element.
  • the session management network element is configured to perform the steps in the second or third aspect described above, or performed by the session management network element in a solution provided by an embodiment of the present application.
  • the communication system further includes a policy control network element.
  • the policy control network element is configured to perform the steps in the first aspect described above, or performed by the session management network element in the solution provided in the embodiment of the present application.
  • the communication system may further include other devices that interact with the policy control network element or the session management network element in the solution provided in the embodiments of the present application, such as a mobile management network element or a user plane function network element, etc.
  • a mobile management network element or a user plane function network element etc. This embodiment of the present application does not specifically limit this.
  • FIG. 1 is a first schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a second schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of an application of a communication system provided by an embodiment of the present application in a 5G network;
  • FIG. 4 is a schematic diagram of a user plane architecture of an existing 5GLAN service
  • FIG. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 6 is a first schematic flowchart of a local area network communication method according to an embodiment of the present application.
  • FIG. 7 is a second schematic flowchart of a local area network communication method according to an embodiment of the present application.
  • FIG. 8 is a third schematic flowchart of a local area network communication method according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a policy control network element according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a session management network element according to an embodiment of the present application.
  • At least one or more of the following or similar expressions refers to any combination of these items, including any combination of single or plural items.
  • at least one (a), a, b, or c can be expressed as: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • words such as “first” and “second” are used to distinguish between the same or similar items having substantially the same functions and functions. Those skilled in the art can understand that the words “first”, “second” and the like do not limit the number and execution order, and the words “first” and “second” are not necessarily different.
  • the network architecture and service scenarios described in the embodiments of the present application are used to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. With the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • the communication system 10 includes a policy control network element 101 and a session management network element 102.
  • the session management network element 102 is configured to send a first event report to the policy control network element 101.
  • the first event report includes a first event and indication information of a first local area network, and the first event includes a terminal. Move in or out of the service area of the first local area network.
  • the policy control network element 101 is configured to receive a first event report from the session management network element 102, and update the first policy and plan corresponding to the terminal according to the first event in the first event report and the indication information of the first local area network. After policy control (PCC), send the updated first PCC rule to the session management network element 102.
  • PCC policy control
  • the session management network element 102 is configured to receive the updated first PCC rule from the policy control network element 101, and modify the session of the terminal according to the updated first PCC rule.
  • the first event report in the embodiment of the present application may also be replaced with a first mobility event report (mobility event report) or another name, which is not specifically limited in the embodiment of the present application.
  • mobility event report mobility event report
  • the indication information of the first local area network may be, for example, an identifier of the first local area network or a first presence reporting area (PRA) identifier (identify, ID) corresponding to the first local area network. ID), which is not specifically limited in this embodiment of the present application.
  • PRA first presence reporting area
  • the session management network element 102 may modify the session of the terminal according to the updated first PCC rule.
  • the session management network element 102 may modify the session of the terminal according to the updated first PCC rule.
  • the policy control network element 101 and the session management network element 102 may communicate directly, or may communicate through forwarding by other devices, which is not specifically limited in this embodiment of the present application.
  • the policy control network element can update the first PCC rule corresponding to the terminal, which can then trigger a session
  • the management network element modifies the session of the terminal according to the updated first PCC rule. Therefore, in a case where one session of a terminal is connected to multiple local area network services, it is possible to restrict communication of the terminal within one or more local area networks based on the location of the terminal.
  • the communication system 20 includes a session management network element 201 and a mobility management network element 202.
  • the mobile management network element 202 is configured to send a first event report to the session management network element 201, where the first event report includes the first event and indication information of the first local area network, and the first event includes the terminal moving in or out of the first A service area of a local area network.
  • the session management network element 201 is configured to receive a first event report from the mobile management network element 202, and modify the session of the terminal according to the first event in the first event report and the indication information of the first local area network.
  • the session management network element 102 may modify the session of the terminal according to the first event in the first event report and the indication information of the first local area network, and may refer to the subsequent method embodiments. I will not repeat them here.
  • the session management network element 201 and the mobile management network element 202 may communicate directly, or may communicate through forwarding by other devices, which is not specifically limited in this embodiment of the present application.
  • the session management network element may receive the first event report including the first event and the indication information of the first local area network, the session management network element may The report makes modifications to the terminal's session. Therefore, in a case where one session of a terminal is connected to multiple local area network services, it is possible to restrict communication of the terminal within one or more local area networks based on the location of the terminal.
  • the communication system shown in FIG. 1 or FIG. 2 may be applied to a current 5G network or other networks in the future, which is not specifically limited in the embodiment of the present application.
  • the network element or entity corresponding to the policy control network element 101 in FIG. 1 may be a 5G network architecture.
  • the policy control function (PCF) network element in the network; the network element or entity corresponding to the session management network element 102 in FIG. 1 or the session management network element 201 in FIG. 2 may be the session management in the 5G network architecture Function (session management function, SMF); the network element or entity corresponding to the mobile management network element 202 in FIG. 2 may be the access and mobility management function (AMF) network in the 5G network architecture yuan.
  • PCF policy control function
  • SMF session management function
  • AMF access and mobility management function
  • the above-mentioned first local area network may be a 5GLAN.
  • 5GLAN may also be referred to as LAN, LAN-type service, LAN-virtual network (VN), 5GLAN-type service, 5GLAN- VN, 5GLAN group, or LAN group, etc.
  • the name of 5GLAN in the embodiment of the present application is not specifically limited.
  • the current 5G network can also include access devices, user plane function (UPF) network elements, authentication server function (AUSF) network elements, and network slice selection functions ( network element selection (NSSF) network element, network open function (NEF) network element, network function storage function (Repository Function, NRF) network element, Unified Data Management (UDM) Network elements, application function (AF) network elements, LAN controllers, etc. are not specifically limited in this embodiment of the present application.
  • UPF user plane function
  • AUSF authentication server function
  • NSF network slice selection functions
  • NEF network open function
  • NRF Network function storage function
  • UDM Unified Data Management
  • AF application function
  • LAN controllers etc.
  • the LAN controller is a new network element added to the 5G network in the embodiment of this application. It is responsible for managing 5GLAN, including creating, modifying, and deleting 5GLAN configuration information. It can also be responsible for verifying and connecting to 5GLAN terminals. Authorization and management of the user plane path of 5GLAN, etc. For specific functions, please refer to the subsequent method embodiments, which will not be repeated here.
  • the LAN controller may also be other names, such as a group management function (GMF) network element, a LAN management function (management function) network element, and a LAN service management function (LAN service management element (LSMF) network element, 5GLAN group management function (5GMF) network element, 5GLAN management function (management function) network element, LAN service management function (5GLAN Service Management Management Function, 5SMF) network element, 5GLAN 5GLAN-VN management function (5LVMF) network element, 5GLAN-type service management function (5LSMF) network element, LAN-VN management function (LVNMF) network element, etc.
  • GMF group management function
  • LSMF LAN service management element
  • the terminal accesses the 5G network through the access device, and the terminal communicates with the AMF network element through the next generation network (N) 1 interface (referred to as N1); the access device uses the N2 interface (referred to as N2) ) Communicates with the AMF network element; the access device communicates with the UPF network element through the N3 interface (referred to as N3); the SMF network element communicates with the UPF network element through the N4 interface (referred to as N4); the UPF network element is connected through the N6 interface (referred to as N6) Into the data network.
  • N1 next generation network
  • N2 interface referred to as N2
  • control plane network elements such as the AUSF network element, AMF network element, SMF network element, NSSF network element, NEF network element, NRF network element, PCF network element, UDM network element, or AF network element shown in FIG. 2 can also be used.
  • Service-based interfaces interact.
  • the service-oriented interface provided externally by the AUSF network element may be Nausf; the service-oriented interface provided externally by the AMF network element may be Namf; the service-oriented interface provided externally by the SMF network element may be Nsmf; and the service-oriented interface provided externally by the NSSG network element It can be Nnssf; the external service interface provided by NEF network element can be Nnef; the external service interface provided by NRF network element can be Nnrf; the external service interface provided by PCF network element can be Npcf; the external service provided by UDM network element
  • the service interface can be Nudm; the service interface provided by the AF network element externally can be Naf.
  • the service interface provided by the LAN controller externally may be Nlan.
  • FIG. 4 shows a schematic diagram of the user plane architecture of the existing 5GLAN service.
  • the terminal establishes a session to a UPF network element that provides 5GLAN services, thereby accessing the UPF network element that provides 5GLAN services.
  • the UPF network element that provides 5GLAN services can communicate with the existing LAN in the data network through N6, such as communicating with a personal computer (PC) in the LAN; or, the UPF network element that provides 5GLAN services can also pass
  • the connection between the internal UPF network element and the UPF network element is associated with sessions of different terminals to implement private communication, which is not specifically limited in this embodiment of the present application.
  • the terminals involved in the embodiments of the present application may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem; Including subscriber unit, cellular phone, smart phone, wireless data card, personal digital assistant (PDA) computer, tablet computer, wireless modem (modem), handheld device (handheld), laptop (computer), cordless phone (wireless local phone) or wireless local loop (WLL) station, machine type communication (MTC) terminal, user equipment (user equipment) , UE), mobile station (MS), terminal device (terminal device) or relay user equipment.
  • the relay user equipment may be, for example, a 5G residential gateway (RG).
  • RG 5G residential gateway
  • the access devices involved in the embodiments of the present application refer to devices that access the core network, and may be, for example, base stations and broadband network service gateways.
  • BNG broadband network gateway
  • aggregation switches non-third generation partnership project (3rd generation partnership project, 3GPP) access equipment, etc.
  • the base station may include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, and the like.
  • the policy control network element or the session management network element in FIG. 1 in the embodiment of the present application, or the session management network element or the mobile management network element in FIG. 2 may be implemented by one device, or may be implemented by multiple devices together. It may also be a functional module in a device, which is not specifically limited in the embodiment of the present application. It can be understood that the foregoing functions may be network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (for example, a cloud platform).
  • FIG. 5 is a schematic diagram of a hardware structure of a communication device according to an embodiment of the present application.
  • the communication device 500 includes a processor 501, a communication line 502, a memory 503, and at least one communication interface (the communication device 504 is only taken as an example for description in FIG. 5).
  • the processor 501 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more processors for controlling the execution of the program of the solution of the present application. integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the communication line 502 may include a path for transmitting information between the aforementioned components.
  • the communication interface 504 uses any device such as a transceiver to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • RAN radio access network
  • WLAN wireless local area networks
  • the memory 503 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM), or other types that can store information and instructions
  • the dynamic storage device can also be electrically erasable programmable read-only memory (EEPROM-ready-only memory (EEPROM)), compact disc (read-only memory (CD-ROM)) or other optical disk storage, optical disk storage (Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be used by a computer Any other media accessed, but not limited to this.
  • the memory may exist independently, and is connected to the processor through the communication line 502. The memory can also be integrated with the processor.
  • the memory 503 is configured to store a computer execution instruction for executing the solution of the present application, and the execution is controlled by the processor 501.
  • the processor 501 is configured to execute computer execution instructions stored in the memory 503, so as to implement the local area network communication method provided in the following embodiments of the present application.
  • the computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.
  • the processor 501 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 5.
  • the communication device 500 may include multiple processors, such as the processor 501 and the processor 507 in FIG. 5. Each of these processors may be a single-CPU processor or a multi-CPU processor.
  • a processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions).
  • the communication device 500 may further include an output device 505 and an input device 506.
  • the output device 505 is in communication with the processor 501 and can display information in a variety of ways.
  • the output device 505 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. Wait.
  • the input device 506 is in communication with the processor 501 and can receive user input in a variety of ways.
  • the input device 506 may be a mouse, a keyboard, a touch screen device, or a sensing device.
  • the above-mentioned communication device 500 may be a general-purpose device or a special-purpose device.
  • the communication device 500 may be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a device with a similar structure in FIG. 5 device.
  • PDA personal digital assistant
  • the embodiment of the present application does not limit the type of the communication device 500.
  • the local area network communication method provided by the embodiment of the present application will be specifically described below with reference to FIGS. 1 to 5.
  • the communication system shown in FIG. 1 is applied to the 5G network shown in FIG. 3 as an example.
  • this embodiment of the present application provides a local area network communication method.
  • the local area network communication method optionally includes the following steps S601-S602:
  • the LAN controller sends first configuration information to the PCF network element.
  • the PCF network element receives the first configuration information from the LAN controller.
  • the first configuration information may include 5GLAN ID and service area information corresponding to the 5GLAN ID; or the first configuration information may include PRA ID and service area information corresponding to PRA ID, This embodiment of the present application does not specifically limit this.
  • the service area information is used to identify a specific 5GLAN service area.
  • the service area information may be, for example, geographical location information, tracking area (TA) information, or cell information, and the like is not specifically limited in this embodiment of the present application.
  • the TA information in the embodiment of the present application may be, for example, a TA identifier, or the cell information may be, for example, a cell identifier, which is not specifically limited in this embodiment of the present application.
  • the 5GLAN ID in the first configuration information may be one or more, and accordingly, correspond to 5GLAN
  • the service area information corresponding to the ID may be one or more.
  • a 5GLAN ID corresponds to one service area information, which is described here in a unified manner, and is not described in detail below.
  • the first configuration information may be shown in Table 1.
  • 5GLAN ID Service area information 5GLAN ID1 Service area information 1 5GLAN ID2 Service area information 2 5GLAN ID3 Service area information 3 ... ...
  • the above table 1 is only an example for providing a table storage form of the first configuration information (including 5GLAN ID and service area information). Of course, there may be other tables when storing the first configuration information.
  • the storage manner or other non-table storage manners are not specifically limited in this embodiment of the present application.
  • the PRA ID in the first configuration information may be one or more, and accordingly, The service area information corresponding to the PRA ID may be one or more.
  • one PRA ID corresponds to one service area information, which will be described collectively here, and will not be described in detail below.
  • the first configuration information may be shown in Table 2.
  • PRA ID Service area information PRA ID1 Service area information 1 PRA ID2 Service area information 2 PRA ID3 Service area information 3 ... ...
  • the above table 2 is only an example for providing a table storage form of the first configuration information (including PRA ID and service area information). Of course, there may be other tables when the first configuration information is stored.
  • the storage manner or other non-table storage manners are not specifically limited in this embodiment of the present application.
  • the first configuration information may further include a data network name (data network name, DNN) corresponding to the 5GLAN ID, which is not specifically limited in this embodiment of the present application.
  • DNN data network name
  • the first configuration information including 5GLAN ID and service area information corresponding to the 5GLAN ID
  • different 5GLAN IDs may correspond to different DNNs.
  • 5GLAN ID1 and 5GLAN ID2 can correspond to DNN1
  • 5GLAN ID3 can correspond to DNN2.
  • the first configuration information including 5GLAN ID and service area information corresponding to 5GLAN ID
  • multiple 5GLAN IDs may correspond to the same DNN. That is, the first configuration information may be configuration information for a data network. For example, as shown in Table 4, 5GLAN ID1, 5GLAN ID2, and 5GLAN ID3 can all correspond to DNN1.
  • Table 3 or Table 4 merely provides a table storage form of first configuration information (including DNN, 5GLAN ID, and service area information) by way of example.
  • first configuration information including DNN, 5GLAN ID, and service area information
  • the first configuration information includes PRA ID and service area information corresponding to PRA ID, then at this time, only the 5GLAN ID in Table 3 or Table 4 needs to be replaced with the corresponding PRA ID. More details.
  • the 5GLAN ID can be understood as the identity of a 5GLAN group.
  • the 5GLAN ID can be used to identify a 5GLAN group, or a 5GLAN-VN, or a specific 5GLAN service.
  • Terminals using the same 5GLAN ID belong to the same 5GLAN group, and can use the 5GLAN service corresponding to the 5GLAN ID or can use the 5GLAN-VN corresponding to the 5GLAN ID, that is, 5GLAN private communication can be performed between the terminals using the same 5GLAN ID.
  • the 5GLAN ID can be a special domain name (such as a data network name (DNN)), a fully qualified domain name (FQDN), a VID, a string, and an internal group identifier ( internal group identifier, external group identifier, or serial number.
  • the LAN ID may also adopt some special formats.
  • the LAN ID may also include provider information, operator information, network information, domain information, etc., which are not specifically limited in the embodiments of the present application.
  • the PCF network element sends the second configuration information to the AMF network element.
  • the AMF network element receives the second configuration information from the PCF network element.
  • the second configuration information may include, for example, 5GLAN ID and corresponding to 5GLAN ID.
  • Service area information For example, the second configuration information may be as shown in Table 1 above.
  • the second configuration information may include, for example, a PRA ID and a service corresponding to the PRA ID Area information.
  • the PRA ID here may be 5GLAN ID, or may be determined by the PCF network element according to the 5GLAN ID, which is not specifically limited in this embodiment of the present application. That is, when the PRA ID is not 5GLAN ID, the PCF network element can learn the correspondence between the 5GLAN ID and the PRA ID, where one PRA ID corresponds to one 5GLAN ID. For example, the correspondence between 5GLAN ID and PRA ID can be shown in Table 5:
  • 5GLAN ID PRA ID 5GLAN ID1 PRA ID1 5GLAN ID2 PRA ID2 5GLAN ID3 PRA ID3 ... ...
  • table 5 is only an example for providing a table storage form of the correspondence between 5GLAN ID and PRA ID.
  • other non-table storage methods which are not specifically limited in this embodiment of the present application.
  • the correspondence between the 5GLAN ID and the PRA ID may be pre-configured on the PCF network element or may be dynamically generated, which is not specifically limited in this embodiment of the present application.
  • the second configuration information in the embodiment of the present application may be shown in Table 6:
  • PRA ID Service area information PRA ID1 Service area information 1 PRA ID2 Service area information 2 PRA ID3 Service area information 3 ... ...
  • the above table 6 is only an example for providing a table storage form of the second configuration information (including PRA ID and service area information). Of course, there may be other tables when storing the second configuration information.
  • the storage manner or other non-table storage manners are not specifically limited in this embodiment of the present application.
  • the second configuration information may include, for example, PRA ID and PRA ID.
  • Service area information corresponding to the ID may be as shown in Table 2 above.
  • the PCF network element may send the second configuration information to the AMF network element during the registration process of a terminal; it may also send the first configuration information to the AMF network element after receiving the first configuration information.
  • the second configuration information has nothing to do with registration, which is not specifically limited in the embodiment of the present application.
  • the local area network communication method provided in the embodiment of the present application may further include the following steps:
  • the terminal sends a non-access stratum (NAS) message to the AMF network element.
  • NAS non-access stratum
  • the terminal receives the NAS message from the AMF network element.
  • the NAS message includes a session establishment request message, a PDU session identifier (session ID), and a 5GLAN ID.
  • the NAS message includes a DNN corresponding to the session of the terminal.
  • the following description is made by assuming that the DNN corresponding to the session of the terminal is DNN1, and the description is unified here.
  • the 5GLAN ID in the NAS message in step S603 may be one or more, which is not specifically limited in the embodiment of the present application.
  • the AMF network element sends an N11 message to the SMF network element.
  • the SMF network element receives the N11 message from the AMF network element.
  • the N11 message includes the foregoing session establishment request message, a PDU session identifier, and a 5GLAN ID.
  • the N11 message may also include the identity of the terminal.
  • the NAS message includes DNN1
  • the N11 message may further include DNN1, which is not specifically limited in this embodiment of the present application.
  • the identifier of the terminal may be, for example, a subscription permanent identifier (SUPI), an international mobile subscriber identifier (IMSI) mobile station integrated service digital network number (mobile) station integrated services digital network number (MSISDN), global unique temporary identifier (GUTI), data network-related identifier (such as network access identifier (NAI) or 5GLAN specific user identifier, etc.
  • SUPI subscription permanent identifier
  • IMSI international mobile subscriber identifier
  • MSISDN mobile station integrated service digital network number
  • GUI global unique temporary identifier
  • NAI network access identifier
  • 5GLAN specific user identifier 5GLAN specific user identifier
  • the SMF network element obtains an address of the terminal or a virtual local area network identification (VID) of the terminal.
  • VIP virtual local area network identification
  • the manner in which the SMF network element obtains the terminal address or the terminal VID may refer to an existing manner, such as locally assigning the terminal address or the terminal VID; or obtaining the terminal address from the UDM network element or The VID of the terminal; or obtain the terminal's address or VID of the terminal from a dynamic host configuration protocol (DHCP) server; or from the data network authentication, authorization, and accounting (DN-authentication-authorization-accounting, DN- AAA)
  • DHCP dynamic host configuration protocol
  • DN-authentication-authorization-accounting DN- AAA
  • the address of the terminal or the VID of the terminal obtained by the SMF network element corresponds to the 5GLAN ID in the N11 message in the above step S604.
  • the terminal address or the VID of the terminal obtained by the SMF network element is one; or, if the 5GLAN ID in the N11 message in the above step S604 is multiple ,
  • the address of the terminal or the VID of the terminal obtained by the SMF network element may be multiple, which are collectively described here, and are not described in detail below.
  • the address of the terminal may be, for example, an Internet Protocol (version 4) IPv4 address, an Internet Protocol (version 6) IPv6 address, media access control (media access control (MAC) addresses, etc., which are not specifically limited in this embodiment of the present application.
  • the SMF network element sends a session management (SM) policy request message to the PCF network element.
  • SM session management
  • the PCF network element receives the SM policy request message from the SMF network element.
  • the policy request message includes the 5GLAN ID and the address of the corresponding terminal; or, if the SMF network element obtained in step S605 is Is the VID of the terminal, the policy request message includes the 5GLAN ID and the VID of the corresponding terminal, which is not specifically limited in this embodiment of the present application.
  • the 5GLAN ID in the SM policy request message in step S606 is the 5GLAN ID in the above N11 message.
  • the SM policy request message further includes DNN1, which is not specifically limited in this embodiment of the present application.
  • the PCF network element may store the correspondence between the 5GLAN ID and the address of the terminal after receiving the SM policy request message from the SMF network element.
  • Table 7 The results are shown in Table 7:
  • the PCF network element may store the PRA ID and the address of the terminal after receiving the SM policy request message from the SMF network element
  • the results are shown in Table 8; or the correspondence between 5GLAN ID, PRA ID and terminal address is stored, and the results are shown in Table 9.
  • 5GLAN ID PRA ID Address of the terminal 5GLAN ID1 PRA ID1 Address 1 5GLAN ID2 PRA ID2 Address 2 5GLAN ID3 PRA ID3 Address 3 ... ... ...
  • Tables 7 to 9 are only exemplary for providing a table storage form of the correspondence between at least one of the 5GLAN ID or PRA ID and the address of the terminal.
  • there is a correspondence between at least one of the terminals and the address of the terminal there may be other table storage methods or other non-table storage methods, which are not specifically limited in this embodiment of the present application.
  • the PCF network element may store the 5GLAN ID and the VID of the terminal after receiving the SM policy request message from the SMF network element.
  • Table 10 The corresponding relationship is shown in Table 10:
  • the PCF network element may store the PRA ID and the VID of the terminal after receiving the SM policy request message from the SMF network element.
  • the results are shown in Table 11; or the correspondence between 5GLAN ID, PRA ID, and VID of the terminal is stored, and the results are shown in Table 12.
  • Tables 10 to 12 are only examples for providing a table storage form of the correspondence relationship between at least one of 5GLAN ID or PRA ID and the VID of the terminal.
  • 5GLAN ID or PRA ID is stored.
  • the PCF network element sends a first subscription request message to the SMF network element.
  • the SMF network element receives the first subscription request message from the PCF network element.
  • the first subscription request message includes at least one of a 5GLAN ID or a PRA ID corresponding to the 5GLAN ID.
  • the 5GLAN ID or PRA ID here is the 5GLAN ID corresponding to the 5GLAN with service area restrictions.
  • the 5GLAN ID corresponding to the PRA ID in step S601 has an intersecting 5GLAN ID.
  • the PCF network element may determine the 5GLAN ID or PRA ID in the first subscription request message in conjunction with DNN1. Not specifically limited.
  • the first subscription request message further includes service area information corresponding to 5GLAN ID or PRA ID. Not specifically limited.
  • step S602 if the above step S602 is performed, if the second configuration information in step S602 is PRA ID and corresponding service area information, the first subscription request message needs to include PRA ID.
  • step S602 if step S602 is performed, if the second configuration information in step S602 is 5GLAN ID and corresponding service area information, the first subscription request message needs to include 5GLAN ID, It is unified here and will not be described in detail below.
  • multiple subscriptions may be performed through one subscription request message; or, for each 5GLAN ID or each Each PRA ID is subscribed through a subscription request message, which is not specifically limited in this embodiment of the present application.
  • the first subscription request message in the embodiment of the present application may also be replaced by a first mobility event subscription (request for mobility event subscription) request message, which is not specifically limited in this embodiment of the present application.
  • a first mobility event subscription request for mobility event subscription
  • the SMF network element sends a second subscription request message to the AMF network element.
  • the AMF network element receives a second subscription request message from the SMF network element.
  • the second subscription request message includes information in the first subscription request message. For example, if the first subscription request message includes a PRA ID, the second subscription request message includes a PRA ID; or, if the first subscription request message includes a 5GLAN ID, the second subscription request message includes a 5GLAN ID; or, If the first subscription request message includes 5GLAN ID and PRA ID, the second subscription request message includes 5GLAN ID and PRA ID, which is not specifically limited in this embodiment of the present application. In addition, if the first subscription request message also includes service area information corresponding to 5GLAN ID or PRA ID, correspondingly, the second subscription request message also includes service area information corresponding to 5GLAN ID or PRA ID. This is not specifically limited.
  • multiple subscriptions may be performed through one subscription request message; or, for each 5GLAN ID or each Each PRA ID is subscribed through a subscription request message, which is not specifically limited in this embodiment of the present application.
  • the second subscription request message in the embodiment of the present application may also be replaced with a second mobility event subscription (mobility event subscription) request message, which is not specifically limited in this embodiment of the present application.
  • a second mobility event subscription mobility event subscription
  • the AMF network element detects a mobility event of the terminal in the service area of the subscribed 5GLAN.
  • the AMF network element may detect the terminal based on the service area information corresponding to 5GLAN ID or PRA ID. Mobility events within the service area of the subscribed 5GLAN.
  • the AMF network element may determine the corresponding service area information according to the PRA ID included in the second subscription request message in combination with the second configuration information, and then detect the terminal in the subscription based on the service area information.
  • the mobility event in the service area of the 5GLAN is not specifically limited in this embodiment of the present application.
  • the AMF network element may determine the corresponding service area information according to the 5GLAN ID included in the second subscription request message in combination with the second configuration information, and then detect the terminal in the subscription based on the service area information.
  • the 5GLAN service area mobility event is not specifically limited in this embodiment of the present application.
  • the local area network communication method provided in the embodiment of the present application may further include the following steps:
  • the AMF network element sends a first event report to the SMF network element.
  • the SMF network element receives the first event report from the AMF network element.
  • the first event report includes the first event and indication information of 5GLAN1.
  • the first event includes the terminal moving into or out of the service area of 5GLAN1.
  • the indication information of 5GLAN1 may be, for example, 5GLAN ID1 or PRA ID1.
  • the indication information of 5GLAN1 may include, for example, 5GLAN ID1 or PRA ID1, which is not specifically limited in this embodiment of the present application.
  • the corresponding indication information of 5GLAN1 may include 5GLAN ID1; or, if the second subscription request message includes PRA ID, the corresponding indication information of 5GLAN1 is, for example, It may include PRA ID1, which will be described collectively here, and will not be described in detail below.
  • the SMF network element sends the first event report to the PCF network element.
  • the PCF network element receives the above-mentioned first event report from the SMF network element.
  • the PCF network element updates the first PCC rule corresponding to the terminal according to the first event and the indication information of 5GLAN1.
  • the PCF network element updates the first PCC rule corresponding to the terminal according to the first event and the indication information of 5GLAN1.
  • the PCF network element may be: ID1, combined with the correspondence between the above 5GLAN ID1 and the address of the corresponding terminal (such as Table 7 or Table 9), determine the address of the terminal corresponding to 5GLAN ID1, and then update the terminal correspondence according to the first event and the determined terminal address The first PCC rule.
  • the PCF network element updates the first PCC rule corresponding to the terminal according to the first event and the indication information of 5GLAN1, for example, a PCF network element According to the 5GLAN ID1 and the corresponding relationship between the above 5GLAN ID1 and the VID of the corresponding terminal (such as Table 10 or Table 12), determine the VID of the terminal corresponding to the 5GLAN ID1, and then according to the first event and the determined VID of the terminal, Update the first PCC rule corresponding to the terminal.
  • a PCF network element According to the 5GLAN ID1 and the corresponding relationship between the above 5GLAN ID1 and the VID of the corresponding terminal (such as Table 10 or Table 12), determine the VID of the terminal corresponding to the 5GLAN ID1, and then according to the first event and the determined VID of the terminal, Update the first PCC rule corresponding to the terminal.
  • the PCF network element updates the first PCC rule corresponding to the terminal according to the first event and the indication information of 5GLAN1, for example, the PCF network element According to PRA ID1, combining the above-mentioned correspondence between PRA ID1 and the address of the corresponding terminal (such as Table 8 or Table 9), determine the address of the terminal corresponding to PRA ID1, and then update according to the first event and the determined terminal address.
  • the first PCC rule corresponding to the terminal if the indication information of 5GLAN1 is PRA ID1, the PCF network element updates the first PCC rule corresponding to the terminal according to the first event and the indication information of 5GLAN1, for example, the PCF network element According to PRA ID1, combining the above-mentioned correspondence between PRA ID1 and the address of the corresponding terminal (such as Table 8 or Table 9), determine the address of the terminal corresponding to PRA ID1, and then update according to the first event and the determined terminal address.
  • the first PCC rule corresponding to the terminal if the indication information of 5GLAN
  • the PCF network element updates the first PCC rule corresponding to the terminal according to the first event and the indication information of 5GLAN1, for example, the PCF network element According to the PRA ID1 and the correspondence between the PRA ID1 and the VID of the corresponding terminal (see Table 11 or Table 12), determine the VID of the terminal corresponding to PRA ID1, and then according to the first event and the determined VID of the terminal To update the first PCC rule corresponding to the terminal.
  • the PCF network element updates the first PCC rule corresponding to the terminal according to the first event and the determined terminal address.
  • the first PCC rule may include: if the first event is that the terminal moves into the service area of 5GLAN1, Determine the filter and quality of service (QoS) parameters associated with the address of the terminal, and add the filter and QoS parameters to the first PCC rule to obtain the updated first PCC rule; or, if The first event is that the terminal moves out of the service area of 5GLAN1, then determines the filter and QoS parameters associated with the address of the terminal, and deletes the filter and QoS parameters from the first PCC rule to obtain an updated first PCC rule.
  • QoS quality of service
  • the PCF network element updates the first PCC rule corresponding to the terminal according to the first event and the determined VID of the terminal, which may include, for example, if the first event is that the terminal moves into the service area of 5GLAN1 , Determine the filter and QoS parameters associated with the VID of the terminal, and add the filter and QoS parameters to the first PCC rule to obtain the updated first PCC rule; or, if the first event is that the terminal moves out of 5GLAN1 Service area, the filter and QoS parameters associated with the VID of the terminal are determined, and the filter and QoS parameters are deleted from the first PCC rule to obtain an updated first PCC rule.
  • the PCF network element sends the updated first PCC rule to the SMF network element.
  • the SMF network element receives the updated first PCC rule from the PCF network element.
  • the SMF network element modifies the session of the terminal according to the updated first PCC rule.
  • the SMF network element modifies the session of the terminal according to the updated first PCC rule, which may include: if the updated first PCC rule indicates permission The terminal routes data on 5GLAN1, and the SMF network element instructs the UPF network element to set a first routing rule, where the first routing rule includes the address of the terminal or the VID of the terminal, and is used to associate the session with 5GLAN1.
  • the updated first PCC rule includes filters and QoS parameters associated with the address of the terminal, it may indicate that the terminal is allowed to route data on 5GLAN1, and further the SMF network element may instruct the UPF network element to set the first routing rule, where The first routing rule includes the address of the terminal; or, for example, if the updated first PCC rule includes filters and QoS parameters associated with the VID of the terminal, it may indicate that the terminal is allowed to route data on 5GLAN1, and then the SMF network element The UPF network element may be instructed to set a first routing rule, where the first routing rule includes a VID of the terminal.
  • the SMF network element also needs to activate the user plane connection of the terminal's session. For example, when the SMF network element receives a downlink data notification or downlink data, it sends an N11 message (Namf_Communication_N1N2MessageTransfer) to the AMF network element to trigger a network-triggered service request process for the terminal's session to activate the user plane connection of the terminal's session; or After receiving the N11 message (Nsmf_PDUSession_UpdateSMContext Request) sent by the AMF network element, the SMF network element activates the user plane connection of the terminal session.
  • N11 message N11 message
  • Nsmf_PDUSession_UpdateSMContext Request the SMF network element activates the user plane connection of the terminal session.
  • the SMF network element modifies the session of the terminal according to the updated first PCC rule, which may include: if the updated first PCC The rule indicates that the terminal is not allowed to route data on 5GLAN1, and the SMF network element instructs the UPF network element to delete the first routing rule, where the first routing rule includes the address of the terminal or the VID of the terminal and is used to associate the session with 5GLAN1.
  • the updated first PCC rule does not include the filter and QoS parameters associated with the terminal address, it may indicate that the terminal is not allowed to route data on 5GLAN1, and the SMF network element instructs the UPF network element to delete the first routing rule.
  • the first routing rule includes an address of the terminal or a VID of the terminal.
  • the SMF network element needs to deactivate the user plane connection of the terminal's session, and the SMF network element must ensure that data notification is disabled. If the SMF network element is not notified of the terminal moving into the service area of 5GLAN1 after a period of time, the SMF network element releases the session of the terminal; or the SMF network element directly releases the session of the terminal.
  • the SMF network element instructs the UPF network element to set the first routing rule.
  • the SMF network element may determine the first routing rule according to the terminal address or the terminal VID, and carry the first routing rule. It is sent to the UPF network element in the N4 session modification / create message, and the UPF network element sets the first routing rule.
  • the SMF network element instructs the UPF network element to delete the first routing rule.
  • the SMF network element may determine the first routing rule according to the terminal address or the terminal VID, and remove the first routing rule from The session rule of the terminal is deleted, and the updated session rule of the terminal that does not include the first routing rule is carried in the N4 session modification / release message and sent to the UPF network element.
  • the session rule of the terminal of the routing rule deletes the first local routing rule.
  • the SMF network element 5GLAN ID is carried to the UPF network element in an N4 session modification / release message, and the UPF network element deletes the first routing rule according to the 5GLAN ID.
  • the address of the terminal or the VID of the terminal may be determined in the following manner:
  • the SMF network element will locally store the session PCC rule corresponding to the terminal Compare with the updated first PCC rule to determine the address of the terminal or the VID of the terminal.
  • the updated first PCC rule adds a PCC rule including the address or VID of the terminal to the session PCC rule corresponding to the locally stored terminal, or the updated first PCC rule corresponds to the locally stored terminal. If the session PCC rule reduces the PCC rule including the address of the terminal or the VID of the terminal, it can be determined that the added PCC rule or the reduced PCC rule relates to the terminal address or the terminal VID as the terminal address or the terminal VID.
  • the actions of the PCF network element or the SMF network element in the above steps S601 to S614 can be executed by the processor 501 in the communication device 500 shown in FIG. 5 calling the application program code stored in the memory 503. This embodiment deals with this. Without any restrictions.
  • the communication system shown in FIG. 2 is applied to the 5G network shown in FIG. 3 as an example.
  • this embodiment of the present application provides a local area network communication method.
  • the local area network communication method optionally includes the following step S701:
  • the LAN controller sends configuration information to the AMF network element.
  • the AMF network element receives the configuration information from the PCF network element.
  • the configuration information in the embodiment of the present application may be the same as the second configuration information in the embodiment shown in FIG. 6.
  • the LAN controller may directly send the above configuration information to the AMF network element, or may send the above configuration information to the AMF network element through other network elements, such as a PCF network element. This is not specifically limited.
  • the local area network communication method provided in the embodiment of the present application may further include the following steps S702-S704:
  • S702-S704 are the same as steps S603-S605 in the embodiment shown in FIG. 6.
  • steps S603-S605 in the embodiment shown in FIG. 6.
  • the SMF network element determines the address of the terminal, the correspondence between the 5GLAN ID and the address of the terminal (for example, as shown in Table 7) can be stored; the latter, the terminal of the SMF network element determines the After the address, if the subsequent SMF network element can obtain the PRA ID corresponding to the 5GLAN ID, the SMF network element can also store the correspondence between the PRA ID and the address of the terminal (for example, as shown in Table 8) or the 5GLAN ID, PRA ID, and The correspondence between the addresses of the terminals (for example, as shown in Table 9); or after the SMF network element determines the VID of the terminal, it can also store the correspondence between the 5GLAN ID and the VID of the terminal (for example, as shown in Table 10); Alternatively, after the SMF network element determines the VID of the terminal, if subsequent SMF network elements can obtain the PRA ID corresponding to the 5GLAN ID, the SMF network element can also store the correspondence between the PRA
  • the local area network communication method provided in the embodiment of the present application may further include the following steps S705-S707:
  • the SMF network element sends a 5GLAN information authentication or acquisition request message to the LAN controller.
  • the LAN controller receives the 5GLAN information authentication or acquisition request message from the SMF network element.
  • the 5GLAN information authentication or acquisition request message may include a 5GLAN ID, and the 5GLAN ID is the 5GLAN ID in the N11 message.
  • the 5GLAN information authentication or acquisition request message may further include DNN1, which is not specifically limited in this embodiment of the present application.
  • the LAN controller determines service area information corresponding to the 5GLAN ID.
  • the LAN controller may determine multiple service area information. Among them, one service area information corresponds to one 5GLAN ID.
  • the LAN controller determines the service area information corresponding to the 5GLAN ID; or, if the 5GLAN information is authenticated or the request message is obtained, It includes multiple 5GLAN IDs, some 5GLAN IDs do not have corresponding service area information, and some 5GLAN IDs have corresponding service area information. At this time, for the 5GLAN ID with corresponding service area information, the LAN controller determines the corresponding 5GLAN ID.
  • the service area information is uniformly described here and will not be described in detail below.
  • the LAN controller may be configured with a correspondence between 5GLAN ID and service area information, and the correspondence may be, for example, as shown in Table 1 above. Furthermore, after the LAN controller receives the 5GLAN ID, according to the corresponding relationship, the corresponding service area information can be determined.
  • the LAN controller may be configured with a correspondence relationship between DNN, 5GLAN ID, and service area information, and the correspondence relationship may be as shown in Table 3 or Table 4 above, for example. Furthermore, after the LAN controller receives the DNN1 and the 5GLAN ID, according to the corresponding relationship, the corresponding service area information can be determined.
  • the LAN controller sends a 5GLAN information authentication or acquisition response message to the SMF network element.
  • the SMF network element receives the 5GLAN information authentication or acquisition response message from the LAN controller.
  • the 5GLAN information authentication or acquisition response message includes at least one of a 5GLAN ID or a PRA ID, and corresponding service area information.
  • the 5GLAN ID and corresponding service area information may be as shown in Table 1 above; or, for example, if the 5GLAN information authentication or acquisition response The message includes the PRA ID and the corresponding service area information, and the PRA ID and the corresponding service area information may be as shown in Table 2 above; or, for example, if the 5GLAN information authentication or acquisition response message includes 5GLAN ID, PRA ID, and corresponding Service area information, 5GLAN ID, PRA ID and corresponding service area information can be shown in Table 13.
  • 5GLAN ID PRA ID Service area information 5GLAN ID1 PRA ID1 Service area information 1 5GLAN ID2 PRA ID2 Service area information 2 5GLAN ID3 PRA ID3 Service area information 3 ... ... ... ...
  • table 13 merely provides a table association form of 5GLAN ID, PRA ID, and corresponding service area information by way of example.
  • GLAN ID, PRA ID, and corresponding service area information may also pass The association is performed in other manners, which is not specifically limited in the embodiment of the present application.
  • the SMF network element may also send a 5GLAN information authentication or acquisition request message to the LAN controller.
  • the LAN controller receives the 5GLAN information authentication or acquisition request message from the SMF network element.
  • the 5GLAN information authentication or acquisition request message may include a 5GLAN ID, and the 5GLAN ID is the 5GLAN ID in the above N11 message.
  • the LAN controller may send a 5GLAN information authentication or acquisition response message to the SMF network element.
  • the SMF network element receives the 5GLAN information authentication or acquisition response message from the LAN controller.
  • the 5GLAN information authentication or acquisition response message includes a PRA ID corresponding to the 5GLANID, which is not specifically limited in this embodiment of the present application.
  • the N11 message in step S703 includes multiple 5GLAN IDs
  • multiple 5GLAN IDs can also be carried in S705, and each 5GLAN can be obtained by performing steps S705-S707 once.
  • Service area information corresponding to the ID may carry 5GLAN ID and service area information for each 5GLAN ID; or, the 5GLAN information authentication or acquisition response message may carry PRA ID and service area information for each 5GLAN ID; Alternatively, the 5GLAN information authentication or acquisition response message may carry 5GLAN ID, PRA ID, and service area information for each 5GLAN ID, which is not specifically limited in this embodiment of the present application.
  • the service areas corresponding to each 5GLAN ID may also be obtained by performing steps S705-S707 multiple times. information.
  • the 5GLAN information authentication or acquisition response message may not include the 5GLAN ID or PRA ID, and may include service area information, which is not specifically limited in this embodiment of the present application.
  • the above step S705 may also be performed, and further, the LAN control
  • the device can determine whether the 5GLAN corresponding to the 5GLAN ID in the 5GLAN information authentication or acquisition request message has a service area restriction, and then the LAN controller sends a 5GLAN information authentication or acquisition response message to the SMF network element.
  • the SMF network element receives the 5GLAN information authentication or acquisition response message from the LAN controller.
  • the 5GLAN information authentication or acquisition response message includes at least one of a 5GLAN ID or a PRA ID, and corresponding service area restriction indication information. This enables subsequent SMF network elements to send a subscription request message to the AMF network element according to the service area restriction indication information, which is not specifically limited in this embodiment of the present application.
  • the SMF network element sends a subscription request message to the AMF network element.
  • the AMF network element receives a subscription request message from the SMF network element.
  • the subscription request message includes at least one of a 5GLAN ID or a PRA ID corresponding to the 5GLAN ID.
  • the 5GLAN ID or PRA ID here is the 5GLAN ID corresponding to the 5GLAN with service area restrictions.
  • the 5GLAN ID here may be the 5GLAN ID in the 5GLAN information authentication or acquisition response message in step S707 above; or, the 5GLAN ID here may be the PRAID in the 5GLAN information authentication or acquisition response message in step S707 above.
  • the corresponding 5GLAN ID; or, the 5GLAN ID here may be the 5GLAN ID determined according to the 5GLAN information authentication in the above step S707 or the service area restriction instruction information in the acquisition response message.
  • the subscription request message may further include service area information corresponding to the 5GLAN ID or PRA ID.
  • the subscription request message may include PRA ID and corresponding service area information; or, for example, if the above steps S705-S707 are performed, and the 5GLAN information authentication or acquisition response message includes service area information corresponding to 5GLAN ID, then The subscription request message includes 5GLAN ID and corresponding service area information; or, for example, if step S701 is performed and the above steps S705-S707 are not performed, the subscription request message may include 5GLAN ID, which is not specifically described in the embodiment of this application. limited.
  • multiple subscriptions may be performed through one subscription request message; or, for each 5GLAN ID or each Each PRA ID is subscribed through a subscription request message, which is not specifically limited in this embodiment of the present application.
  • the subscription request message in the embodiment of the present application may also be replaced with a mobility event subscription request message, which is not specifically limited in this embodiment of the present application.
  • S709-S710 are the same as steps S609-S610 in the embodiment shown in FIG. 6. For related description, refer to the embodiment shown in FIG. 6, and details are not described herein again.
  • S711 and the SMF network element modify the session of the terminal according to the first event and the indication information of 5GLAN1.
  • the SMF network element modifies the session of the terminal according to the first event and the indication information of 5GLAN1, which may include: if the SMF network element is based on the first event and The indication information of 5GLAN1 determines that the terminal is allowed to route data on 5GLAN1.
  • the SMF network element instructs the UPF network element to set a first routing rule, where the first routing rule includes the address of the terminal or the VID of the terminal and is used to associate the session with 5GLAN1.
  • the address of the terminal may be determined according to the indication information of the 5GLAN1 in the first event report, combined with the correspondence between the indication information of the 5GLAN1 and the address of the terminal (as shown in Tables 7, 8, or 9); or,
  • the VID of the terminal may be determined according to the indication information of 5GLAN1 in the first event report, combining the correspondence between the indication information of 5GLAN1 and the VID of the terminal (as shown in Table 10, Table 11 or Table 12).
  • the SMF network element also needs to activate the user plane connection of the terminal's session.
  • step S614 in the embodiment shown in FIG. 6. More details.
  • the SMF network element modifies the session of the terminal according to the first event and the indication information of 5GLAN1, which may include: if the SMF network element An event and the indication information of 5GLAN1 determine that the terminal is not allowed to route data on 5GLAN1.
  • the SMF network element instructs the UPF network element to delete the first routing rule, where the first routing rule includes the address of the terminal or the VID of the terminal and is used to associate the session with the 5GLAN1.
  • the SMF network element also needs to deactivate or directly release the terminal's session.
  • step S614 in the embodiment shown in FIG. 6, I will not repeat them here.
  • the SMF network element may determine to allow data to be routed on 5GLAN1 according to the first event and the indication information of 5GLAN1; or, the embodiment of the present application If the first event is that the terminal moves out of the service area of 5GLAN1, the SMF network element may determine that data is not allowed to be routed on 5GLAN1 according to the first event and the indication information of 5GLAN1.
  • the SMF network element instructs the UPF network element to set the first routing rule, or the SMF network element instructs the UPF network element to delete the first routing rule.
  • Step S614 is not repeated here.
  • the SMF network element may determine the address of the terminal according to the indication information of the 5GLAN1 and the correspondence between the stored indication information of the 5GLAN1 and the terminal address; or the SMF network element may determine the address of the terminal according to the 5GLAN1 And the correspondence between the stored indication information of 5GLAN1 and the VID of the terminal determines the VID of the terminal.
  • the actions of the AMF network element or the SMF network element in the above steps S701 to S711 can be executed by the processor 501 in the communication device 500 shown in FIG. 5 calling the application program code stored in the memory 503. This embodiment deals with this. Without any restrictions.
  • the communication system shown in FIG. 2 is applied to the 5G network shown in FIG. 3 as an example, as shown in FIG. 8, a local area network communication method according to an embodiment of the present application is provided.
  • the local area network communication optionally includes the following steps S801:
  • step S801. It is the same as step S701 in the embodiment shown in FIG. 7.
  • step S701 in the embodiment shown in FIG. 7.
  • steps S701 in the embodiment shown in FIG. 7 For related description, refer to the embodiment shown in FIG. 7, and details are not described herein again.
  • the terminal sends a NAS message to the AMF network element.
  • the terminal receives the NAS message from the AMF network element.
  • the NAS message includes a session establishment request message, a PDU session identifier (session ID), and a DNN corresponding to the session of the terminal.
  • session ID PDU session identifier
  • DNN DNN
  • the AMF network element sends an N11 message to the SMF network element.
  • the SMF network element receives the N11 message from the AMF network element.
  • the N11 message includes the foregoing session establishment request message, a PDU session identifier, and a DNN.
  • the N11 message may also include the identity of the terminal.
  • the terminal identifier refer to step S604 in the embodiment shown in FIG. 6, and details are not described herein again.
  • the SMF network element sends a 5GLAN information authentication or acquisition request message to the LAN controller.
  • the LAN controller receives the 5GLAN information authentication or acquisition request message from the SMF network element.
  • the 5GLAN information authentication or acquisition request message may include the DNN1 and the identity of the terminal.
  • the LAN controller determines the 5GLAN ID associated with DNN1 and assigns the address of the terminal corresponding to the 5GLAN ID or the VID of the terminal; or the LAN controller determines the PRAID associated with DNN1 and assigns the terminal's Address or VID of the terminal.
  • step S801 if the above step S801 is not performed, if the LAN controller determines the 5GLAN ID associated with DNN1 at this time, if the 5GLAN corresponding to the 5GLAN ID has a service area restriction, the LAN controller also needs to Determine the service area information corresponding to the 5GLAN ID; or, if the LAN controller determines the PRA ID associated with DNN1 at this time, if the 5GLAN corresponding to the PRA ID has a service area limitation, the LAN controller also needs to determine the corresponding PRA ID Service area information.
  • the 5GLAN ID associated with DNN1 may be one or more; or, the PRA ID associated with DNN1 may be one or more, which is not specifically limited in this embodiment of the present application.
  • the corresponding service area information is one or more.
  • the correspondence between DNN, 5GLAN ID, and service area information may be as shown in Table 3 or Table 4 above.
  • the address of the corresponding terminal may be one or more.
  • the correspondence between the 5GLAN ID and the address of the terminal may be as shown in Table 7 or Table 9 above.
  • the address of the corresponding terminal may be one or more.
  • the correspondence between the PRA ID and the address of the terminal may be as shown in Table 8 or Table 9 above.
  • the VIDs of the corresponding terminals may be one or more.
  • the correspondence between the 5GLAN ID and the VID of the terminal may be as shown in Table 10 or Table 12 above.
  • the VIDs of the corresponding terminals may be one or more.
  • the correspondence between the PRA ID and the VID of the terminal may be as shown in Table 11 or Table 12 above.
  • the LAN controller sends a 5GLAN information authentication or acquisition response message to the SMF network element.
  • the SMF network element receives the 5GLAN information authentication or acquisition response message from the LAN controller.
  • the LAN controller determines the 5GLAN ID associated with DNN1 in step S805, and assigns the address of the terminal corresponding to the 5GLAN ID, then the 5GLAN information authentication or acquisition response message includes the 5GLAN ID and the corresponding terminal's address.
  • the LAN controller determines the 5GLAN ID associated with DNN1 in step S805, and assigns the VID of the terminal corresponding to the 5GLAN ID, then the 5GLAN information authentication or acquisition response message includes the 5GLAN ID and the corresponding VID of the terminal.
  • the LAN controller determines the PRA ID associated with DNN1 in step S805, and allocates the address of the terminal corresponding to the PRA ID, then the 5GLAN information authentication or acquisition response message includes the PRA ID and the corresponding The address of the terminal.
  • the 5GLAN information authentication or acquisition response message includes the PRA ID and the corresponding VID of the terminal.
  • the 5GLAN information authentication or acquisition response message further includes a message corresponding to the 5GLAN ID or the RPA ID. Service area information.
  • the SMF network element can obtain the address of the terminal corresponding to the 5GLAN ID or RPA ID, or the SMF network element can obtain the VID of the terminal corresponding to the 5GLAN ID or RPA ID.
  • the SMF network element can obtain service area information corresponding to the 5GLAN ID or RPA ID.
  • the foregoing step S801 may also be performed.
  • the LAN controller may Determine whether the 5GLAN corresponding to the 5GLAN ID associated with DNN1 in the 5GLAN information authentication or acquisition request message has a service area restriction, and then can perform steps similar to the above step S806, the difference being, for example, replacing the corresponding service area information in the above step S806
  • related description may refer to the above step S806, which is not repeated here.
  • the address of the terminal corresponding to the 5GLAN ID or RPA ID may also be determined by the SMF network element in the manner shown in the embodiments shown in FIG. 5 or FIG. 6 above, or the 5GLAN ID may be determined.
  • the VID of the terminal corresponding to the RPA ID; or, in the embodiment shown in FIG. 5 or FIG. 6, the manner of obtaining the address of the terminal corresponding to the 5GLAN ID or RPA ID in the above steps S804-S806 in the embodiment of the present application Obtain the address of the terminal corresponding to the 5GLAN ID or RPA ID; or, in the embodiment shown in FIG. 5 or FIG.
  • the terminal corresponding to the 5GLAN ID or RPA ID may also be obtained according to the above steps S804-S806 in the embodiment of the present application
  • the VID of the terminal is used to obtain the VID of the terminal corresponding to the 5GLAN ID or the RPA ID, which is not specifically limited in this embodiment of the present application.
  • the 5GLAN ID or PRA ID included in the subscription request message is the 5GLAN ID corresponding to the 5GLAN with the service area restriction.
  • the 5GLAN ID included in the subscription request message in step S807 may be the 5GLAN ID corresponding to the service area information; or, for example, In the case that the service area information is not included in the 5GLAN information authentication or acquisition response message in step S806, but the above step S801 is performed, the 5GLAN ID included in the subscription request message in step S807 may be based on the 5GLAN information in step S806.
  • the 5GLAN ID determined by the service area restriction indication information in the authentication or acquisition response message may be made to step S708 in the embodiment shown in FIG. 7, and details are not described herein again.
  • S808-S810 are the same as steps S709-S711 in the embodiment shown in FIG. 7.
  • steps S709-S711 in the embodiment shown in FIG. 7.
  • details are not described herein again.
  • the actions of the AMF network element or the SMF network element in the above steps S801 to S810 can be executed by the processor 501 in the communication device 500 shown in FIG. 5 by calling the application program code stored in the memory 503. This embodiment deals with this. Without any restrictions.
  • the policy control network element or the session management network element includes a hardware structure and / or a software module corresponding to each function.
  • this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is performed by hardware or computer software-driven hardware depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.
  • functional module division may be performed on the policy control network element or the session management network element according to the foregoing method example.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one.
  • Processing module may be implemented in the form of hardware or software functional modules. It should be noted that the division of the modules in the embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner.
  • FIG. 9 shows a schematic structural diagram of a policy control network element 90.
  • the policy control network element 90 includes a transceiver module 902 and a processing module 901.
  • the transceiver module 902 is configured to receive a first event report from a session management network element.
  • the first event report includes a first event and indication information of a first local area network.
  • the first event includes a terminal moving in or out of a service area of the first local area network.
  • the processing module 901 is configured to update the first PCC rule corresponding to the terminal according to the first event and the indication information.
  • the transceiver module 902 is further configured to send the updated first PCC rule to the session management network element.
  • the transceiver module 902 is further configured to send a first subscription request message to the session management network element, where the first subscription request message carries indication information of the first local area network and is used to request subscription of a terminal related to the first local area network. Mobility events.
  • the processing module 901 is configured to update the first PCC rule corresponding to the terminal according to the first event and the instruction information, including: determining the address of the terminal according to the instruction information; and updating the terminal according to the first event and the address of the terminal Corresponding first PCC rule.
  • the processing module 901 is configured to update the first PCC rule corresponding to the terminal according to the first event and the instruction information, including: determining the virtual local area network identifier of the terminal according to the instruction information of the first local area network; and according to the first event And the virtual local area network identifier of the terminal, and update the first PCC rule corresponding to the terminal.
  • the policy control network element 90 is presented in the form of dividing each functional module in an integrated manner.
  • the "module” herein may refer to a specific ASIC, a circuit, a processor and a memory executing one or more software or firmware programs, an integrated logic circuit, and / or other devices that can provide the above functions.
  • the policy control network element 90 may take the form shown in FIG. 5.
  • the processor 501 in FIG. 5 may cause the policy control network element 90 to execute the local area network communication method in the foregoing method embodiment by calling a computer execution instruction stored in the memory 503.
  • the function / implementation process of the transceiver module 902 and the processing module 901 in FIG. 9 may be implemented by the processor 501 in FIG. 5 calling a computer execution instruction stored in the memory 503.
  • the function / implementation process of the processing module 901 in FIG. 9 may be implemented by the processor 501 in FIG. 5 calling a computer execution instruction stored in the memory 503, and the function / implementation process of the transceiver module 902 in FIG. 9 may be performed through the graph. 5 to implement the communication interface 504.
  • the policy control network element 90 provided in this embodiment can perform the foregoing local area network communication, the technical effects that can be obtained can refer to the foregoing method embodiments, and details are not described herein again.
  • an embodiment of the present application further provides a device (for example, the device may be a chip system).
  • the device includes a processor, and is configured to support a policy control network element to implement the foregoing local area network communication, for example, according to the first The event and the indication information update the first PCC rule corresponding to the terminal.
  • the device further includes a memory. This memory is used to store program instructions and data necessary for the policy control network element. Of course, the memory may not be in the device.
  • the device is a chip system, the device may be composed of a chip, and may also include a chip and other discrete devices, which are not specifically limited in the embodiments of the present application.
  • FIG. 10 shows a schematic structural diagram of a session management network element 100.
  • the session management network element 100 includes a processing module 1001 and a transceiver module 1002.
  • the transceiver module 1002 is configured to send a first event report to the policy control network element, where the first event report includes the first event and indication information of the first local area network, and the first event includes a terminal moving in or out of a service range of the first local area network;
  • the transceiver module 1002 is further configured to receive the updated first PCC rule corresponding to the terminal from the policy control network element;
  • the processing module 1001 is configured to modify the session of the terminal according to the updated first PCC rule.
  • the transceiver module 1002 is further configured to receive a first subscription request message from a policy control network element, where the first subscription request message carries indication information of the first local area network and is used to request subscription to a terminal related to the first local area network. Mobility event.
  • the processing module 1001 is configured to modify the session of the terminal according to the updated first PCC rule, including: if the updated first PCC rule indicates that the terminal is allowed to route data on the first local area network, indicating a user plane function
  • the network element sets a first routing rule, where the first routing rule includes an address of the terminal or a virtual local area network identifier of the terminal.
  • the processing module 1001 is further configured to activate the user plane connection of the terminal's session if the terminal's session has been deactivated.
  • the processing module 1001 is configured to modify the session of the terminal according to the updated first PCC rule, including: if the updated first PCC rule indicates that the terminal is not allowed to route data on the first local area network, indicating the user plane
  • the functional network element deletes the first routing rule, where the first routing rule includes an address of the terminal or a virtual local area network identifier of the terminal.
  • the processing module 1001 is further configured to deactivate a user plane connection of the terminal's session or directly release the terminal's session if the terminal's session only allows access to the first local area network.
  • the transceiver module 1002 is configured to receive a first event report from a mobile management network element.
  • the first event report includes a first event and indication information of a first local area network.
  • the first event includes a terminal moving in or out of the first local area network.
  • Service range a processing module 1001, configured to modify a session of the terminal according to a first event and indication information of a first local area network.
  • the transceiver module 1002 is further configured to send a first subscription request message to the mobile management network element, where the first subscription request message carries indication information of the first local area network and is used to request a subscription to the first local area network Related mobility events for this terminal.
  • the processing module 1001 is configured to modify the session of the terminal according to the first event and the indication information of the first local area network, including: if it is determined according to the first event and the indication information of the first local area network that the terminal is allowed
  • the routing data in the first local area network instructs the user plane function network element to set a first routing rule, wherein the first routing rule includes an address of the terminal or a virtual local area network identifier of the terminal.
  • the processing module 1001 is further configured to activate a user plane connection of the session of the terminal if the session of the terminal has been deactivated.
  • the processing module 1001 is configured to modify the session of the terminal according to the first event and the indication information of the first local area network, and includes: if it is determined according to the first event and the indication information of the first local area network that the terminal is not allowed
  • the terminal routes data on the first local area network to instruct the user plane function network element to delete a first routing rule, where the first routing rule includes an address of the terminal or a virtual local area network identifier of the terminal.
  • the processing module 1001 is further configured to deactivate the user plane connection of the session of the terminal or directly release the session of the terminal if the session of the terminal is only allowed to access the first local area network.
  • the session management network element 100 is presented in the form of dividing each functional module in an integrated manner.
  • the "module” herein may refer to a specific ASIC, a circuit, a processor and a memory executing one or more software or firmware programs, an integrated logic circuit, and / or other devices that can provide the above functions.
  • the session management network element 100 may adopt the form shown in FIG. 5.
  • the processor 501 in FIG. 5 may cause a session management network element 100 to execute the local area network communication method in the foregoing method embodiment by calling a computer execution instruction stored in the memory 503.
  • the function / implementation process of the transceiver module 1002 and the processing module 1001 in FIG. 10 may be implemented by the processor 501 in FIG. 5 calling a computer execution instruction stored in the memory 503.
  • the function / implementation process of the processing module 1001 in FIG. 10 may be implemented by the processor 501 in FIG. 5 calling a computer execution instruction stored in the memory 503, and the function / implementation process of the transceiver module 1002 in FIG. 5 to implement the communication interface 504.
  • the session management network element 100 provided in this embodiment can perform the foregoing local area network communication, the technical effects that can be obtained can refer to the foregoing method embodiments, and details are not described herein again.
  • an embodiment of the present application further provides a device (for example, the device may be a chip system).
  • the device includes a processor, and is configured to support a session management network element to implement the foregoing local area network communication, for example, according to the first The event and the indication information update the first PCC rule corresponding to the terminal.
  • the device further includes a memory. This memory is used to store program instructions and data necessary for the session management network element. Of course, the memory may not be in the device.
  • the device is a chip system, the device may be composed of a chip, and may also include a chip and other discrete devices, which are not specifically limited in the embodiments of the present application.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, a computer, a server, or a data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, and the like that can be integrated with the medium.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

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Abstract

本申请实施例提供本地局域网通信方法、设备及系统，可以在终端的一个会话连接到多个本地局域网服务的情况下，使得可以基于该终端位置限制终端在一个或多个本地局域网内的通信。方法包括：会话管理网元SMF在会话管理过程中获取会话访问的每个5G局域网5GLAN服务对应的用户设备UE的地址或者虚拟本地局域网标识VID信息；并从局域网控制器LAN Controller获取每个5GLAN服务的服务区域信息；SMF向移动管理网元AMF订阅基于每个5GLAN服务的移动事件Mobility Event，获取基于其服务区域的移动事件报告和对应的5GLAN标识；SMF根据移动事件报告更新用户面管理网元UPF中对应会话的规则。

Description

本地局域网通信方法、设备及系统
本申请要求于2018年9月30日提交中国国家知识产权局、申请号为201811166308.8、发明名称为“本地局域网通信方法、设备及系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及本地局域网通信方法、设备及系统。
背景技术
第五代(5th generation，5G)本地局域网(local area network，5GLAN)服务是目前的5G网络提供的一个服务，主要应用于家庭通信，企业办公，工厂制造，车联网，电网改造和公安机关等。该5GLAN服务能够为一组终端中的两个或者多个终端提供互联网协议(internet protocol，IP)类型或者非IP类型(如以太类型)的私有通信。比如，工厂中的设备可以组成一个组，组中的设备之间可以相互发送以太数据包；或者，企业中一个部门中的雇员的办公设备(如手机，计算机或笔记本电脑等)组成一个组，互相发送IP数据包，等等。若两个终端不在同一个组，则相互之间不能够通信。
其中，5GLAN服务是有区域限制的，即存在5GLAN的服务区域。例如，5G网络为某个工厂的设备提供一个特定的5GLAN服务，在该设备移出此5GLAN的服务区域，5G网络应该根据该设备的位置禁止该设备使用此5GLAN服务；当该设备移动到此5GLAN的服务区域，则5G网络应该根据该设备的位置为该设备提供5GLAN服务。
现有技术中，终端的一个协议数据单元(protocol data unit，PDU)会话只能关联到一个数据网络。为了基于终端位置限制终端在5GLAN内的通信，可以使用数据网络名称(data network name，DNN)来标识5GLAN服务，进而可以使用数据网络相关的本地局域网数据网络(local area network data network，LADN)机制或者应用功能(application funciton，AF)影响(influence)机制来实现一个会话连接到一个5GALN服务时，基于终端位置限制终端在5GLAN内的通信。
然而，上述LADN机制或者AF影响机制均是会话粒度的，若一个会话能连接到多个5GLAN服务，则上述LADN机制或者AF影响机制不可用。此时，如何基于终端位置限制终端在5GLAN的服务区域内的通信，是目前亟待解决的问题。
发明内容
本申请实施例提供本地局域网通信方法、设备及系统，可以在终端的一个会话连接到多个本地局域网服务的情况下，使得可以基于该终端位置限制终端在一个或多个本地局域网内的通信。
为达到上述目的，本申请的实施例采用如下技术方案：
第一方面，提供了一种本地局域网通信方法，该方法包括：策略控制网元接收来自会话管理网元的第一事件报告，该第一事件报告包括第一事件以及第一本地局域网的指示信息，该第一事件包括终端移入或移出该第一本地局域网的服务区域；该策略控制网元根据该第一 事件和该指示信息，更新该终端对应的第一策略与计费控制PCC规则；该策略控制网元向该会话管理网元发送更新后的该第一PCC规则。基于该方案，由于策略控制网元可以在接收包括第一事件以及第一本地局域网的指示信息的第一事件报告之后，更新终端对应的第一PCC规则，进而可以触发会话管理网元根据更新后的第一PCC规则，对终端的会话进行修改。因此，可以在终端的一个会话连接到多个本地局域网服务的情况下，使得可以基于该终端位置限制终端在一个或多个本地局域网内的通信。
在一种可能的设计中，在该策略控制网元接收来自会话管理网元的第一事件报告之前，该方法还包括：该策略控制网元向该会话管理网元发送第一订阅请求消息，该第一订阅请求消息携带该第一本地局域网的指示信息，用于请求订阅与该第一本地局域网相关的该终端的移动性事件。基于该方案，策略控制网元可以订阅与该第一本地局域网相关的该终端的移动性事件。
在一种可能的设计中，该第一订阅请求消息还携带该第一本地局域网的服务区域信息。
在一种可能的设计中，该策略控制网元根据该第一事件和该指示信息，更新该终端对应的第一PCC规则，包括：该策略控制网元根据该指示信息，确定该终端的地址；该策略控制网元根据该第一事件和该终端的地址，更新该终端对应的第一PCC规则。基于该方案，策略控制网元可以更新该终端对应的第一PCC规则。
在一种可能的设计中，该策略控制网元根据该第一事件和该指示信息，更新该终端对应的第一PCC规则，包括：该策略控制网元根据该第一本地局域网的指示信息，确定该终端的虚拟局域网标识；该策略控制网元根据该第一事件和该终端的虚拟局域网标识，更新该终端对应的第一PCC规则。基于该方案，策略控制网元可以更新该终端对应的第一PCC规则。
第二方面，提供了一种本地局域网通信方法，该方法包括：会话管理网元向策略控制网元发送第一事件报告，该第一事件报告包括第一事件以及第一本地局域网的指示信息，该第一事件包括终端移入或移出该第一本地局域网的服务范围；该会话管理网元接收来自该策略控制网元的该终端对应的更新后的第一策略与计费控制PCC规则；该会话管理网元根据该更新后的第一PCC规则，对该终端的会话进行修改。基于该方案，由于会话管理网元向策略控制网元发送包括第一事件以及第一本地局域网的指示信息的第一事件报告之后，可以使得策略控制网元更新第一PCC规则后，向会话管理网元发送更新后的第一PCC规则。进而，会话管理网元可以根据更新后的第一PCC规则，对终端的会话进行修改。因此，可以在终端的一个会话连接到多个本地局域网服务的情况下，使得可以基于该终端位置限制终端在一个或多个本地局域网内的通信。
在一种可能的设计中，在该会话管理网元向该策略控制网元发送该第一事件报告之前，该方法还包括：该会话管理网元接收来自该策略控制网元的第一订阅请求消息，该第一订阅请求消息携带该第一本地局域网的指示信息，用于请求订阅与该第一本地局域网相关的该终端的移动性事件。基于该方案，策略控制网元可以订阅与该第一本地局域网相关的该终端的移动性事件。
在一种可能的设计中，该第一订阅请求消息还携带该第一本地局域网的服务区域信息。
在一种可能的设计中，该会话管理网元根据该更新后的第一PCC规则，对该终端的会话进行修改，包括：若该更新后的第一PCC规则指示允许该终端在该第一本地局域网路由数据，该会话管理网元指示用户面功能网元设置第一路由规则，其中，该第一路由规则包括该终端的地址或者该终端的虚拟局域网标识。基于该方案，会话管理网元可以根据终端的位置对终 端的会话进行修改。
在一种可能的设计中，该方法还包括：若该终端的会话已经去激活，该会话管理网元激活该终端的会话的用户面连接。基于该方案，会话管理网元可以根据终端位置对终端的会话进行修改。
在一种可能的设计中，该会话管理网元根据该更新后的第一PCC规则，对该终端的会话进行修改，包括：若该更新后的第一PCC规则指示不允许该终端在该第一本地局域网路由数据，该会话管理网元指示用户面功能网元删除第一路由规则，其中，该第一路由规则包括该终端的地址或者该终端的虚拟局域网标识。基于该方案，会话管理网元可以根据终端位置对终端的会话进行修改。
在一种可能的设计中，该方法还包括：若该终端的会话仅允许接入该第一本地局域网，该会话管理网元去激活该终端的会话的用户面连接或者直接释放该终端的会话。基于该方案，会话管理网元可以根据终端位置对终端的会话进行修改。
第三方面，提供了一种本地局域网通信方法，该方法包括：会话管理网元接收来自移动管理网元的第一事件报告，该第一事件报告包括第一事件以及第一本地局域网的指示信息，该第一事件包括终端移入或移出该第一本地局域网的服务范围；该会话管理网元根据第一事件以及第一本地局域网的指示信息，对该终端的会话进行修改。基于该方案，由于会话管理网元可以接收包括第一事件以及第一本地局域网的指示信息的第一事件报告，并可以根据第一事件以及第一本地局域网的指示信息，对该终端的会话进行修改。因此，可以在终端的一个会话连接到多个本地局域网服务的情况下，使得可以基于该终端位置限制终端在一个或多个本地局域网内的通信。
在一种可能的设计中，在该会话管理网元接收来自移动管理网元的第一事件报告之前，该方法还包括：该会话管理网元向该移动管理网元发送第一订阅请求消息，该第一订阅请求消息携带该第一本地局域网的指示信息，用于请求订阅与该第一本地局域网相关的该终端的移动性事件。基于该方案，会话管理网元可以订阅与该第一本地局域网相关的该终端的移动性事件。
在一种可能的设计中，该第一订阅请求消息还携带该第一本地局域网的服务区域信息。
在一种可能的设计中，该会话管理网元根据第一事件以及第一本地局域网的指示信息，对该终端的会话进行修改，包括：若该会话管理网元根据第一事件和第一本地局域网的指示信息，确定允许该终端在该第一本地局域网路由数据，该会话管理网元指示用户面功能网元设置第一路由规则，其中，该第一路由规则包括该终端的地址或者该终端的虚拟局域网标识。基于该方案，会话管理网元可以根据终端位置对终端的会话进行修改。
在一种可能的设计中，该方法还包括：若该终端的会话已经去激活，该会话管理网元激活该终端的会话的用户面连接。基于该方案，会话管理网元可以根据终端位置对终端的会话进行修改。
在一种可能的设计中，该会话管理网元根据第一事件以及第一本地局域网的指示信息，对该终端的会话进行修改，包括：若该会话管理网元根据第一事件和第一本地局域网的指示信息，确定不允许该终端在该第一本地局域网路由数据，该会话管理网元指示用户面功能网元删除第一路由规则，其中，该第一路由规则包括该终端的地址或者该终端的虚拟局域网标识。基于该方案，会话管理网元可以根据终端位置对终端的会话进行修改。
在一种可能的设计中，该方法还包括：若该终端的会话仅允许接入该第一本地局域网， 该会话管理网元去激活该终端的会话的用户面连接或者直接释放该终端的会话。基于该方案，会话管理网元可以根据终端位置对终端的会话进行修改。
第四方面，提供了一种策略控制网元，该策略控制网元具有实现上述第一方面所述的方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第五方面，提供了一种策略控制网元，包括：处理器和存储器；该存储器用于存储计算机执行指令，当该策略控制网元运行时，该处理器执行该存储器存储的该计算机执行指令，以使该策略控制网元执行如上述第一方面中任一项所述的本地局域网通信方法。
第六方面，提供了一种策略控制网元，包括：处理器；所述处理器用于与存储器耦合，并读取存储器中的指令之后，根据所述指令执行如上述第一方面中任一项所述的本地局域网通信方法。
第七方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机可以执行上述第一方面中任一项所述的服务质量监测方法。
第八方面，提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机可以执行上述第一方面中任一项所述的本地局域网通信方法。
第九方面，提供了一种装置(例如，该装置可以是芯片系统)，该装置包括处理器，用于支持策略控制网元实现上述第一方面中所涉及的功能，例如根据所述第一事件和所述指示信息，更新所述终端对应的第一策略与计费控制PCC规则。在一种可能的设计中，该装置还包括存储器，该存储器，用于保存策略控制网元必要的程序指令和数据。该装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件。
其中，第四方面至第九方面中任一种设计方式所带来的技术效果可参见第一方面中不同设计方式所带来的技术效果，此处不再赘述。
第十方面，提供了一种会话管理网元，该会话管理网元具有实现上述第二方面或第三方面所述的方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第十一方面，提供了一种会话管理网元，包括：处理器和存储器；该存储器用于存储计算机执行指令，当该会话管理网元运行时，该处理器执行该存储器存储的该计算机执行指令，以使该会话管理网元执行如上述第二方面或第三方面中任一项所述的本地局域网通信方法。
第十二方面，提供了一种会话管理网元，包括：处理器；所述处理器用于与存储器耦合，并读取存储器中的指令之后，根据所述指令执行如上述第二方面或第三方面中任一项所述的本地局域网通信方法。
第十三方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机可以执行上述第二方面或第三方面中任一项所述的服务质量监测方法。
第十四方面，提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机可以执行上述第二方面或第三方面中任一项所述的本地局域网通信方法。
第十五方面，提供了一种装置(例如，该装置可以是芯片系统)，该装置包括处理器，用于支持会话管理网元实现上述第二方面或第三方面中所涉及的功能，例如根据所述第一事件和所述指示信息，更新所述终端对应的第一策略与计费控制PCC规则。在一种可能的设计中，该装置还包括存储器，该存储器，用于保存会话管理网元必要的程序指令和数据。该装置是 芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件。
其中，第十方面至第十五方面中任一种设计方式所带来的技术效果可参见第二方面或第三方面中不同设计方式所带来的技术效果，此处不再赘述。
第十六方面，提供了一种通信系统，该通信系统包括会话管理网元。该会话管理网元用于执行上述第二方面或第三方面中，或者本申请实施例提供的方案中由会话管理网元执行的步骤。
在一种可能的设计中，该通信系统还包括策略控制网元。该策略控制网元用于执行上述第一方面中，或者本申请实施例提供的方案中由会话管理网元执行的步骤。
在一种可能的设计中，该通信系统还可以包括本申请实施例提供的方案中与策略控制网元或会话管理网元进行交互的其他设备，例如移动管理网元或用户面功能网元等，本申请实施例对此不作具体限定。
本申请的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
附图说明
图1为本申请实施例提供的通信系统的结构示意图一；
图2为本申请实施例提供的通信系统的结构示意图二；
图3为本申请实施例提供的通信系统在5G网络的应用示意图；
图4为现有的5GLAN服务的用户面架构示意图；
图5为本申请实施例提供的通信设备的结构示意图；
图6为本申请实施例提供的本地局域网通信方法流程示意图一；
图7为本申请实施例提供的本地局域网通信方法流程示意图二；
图8为本申请实施例提供的本地局域网通信方法流程示意图三；
图9为本申请实施例提供的策略控制网元的结构示意图；
图10为本申请实施例提供的会话管理网元的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。其中，在本申请的描述中，除非另有说明，“/”表示前后关联的对象是一种“或”的关系，例如，A/B可以表示A或B；本申请中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A,B可以是单数或者复数。并且，在本申请的描述中，除非另有说明，“多个”是指两个或多于两个。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
此外，本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知， 随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
如图1所示，为本申请实施例提供的一种通信系统10，该通信系统10包括策略控制网元101和会话管理网元102。
其中，会话管理网元102，用于向策略控制网元101发送第一事件报告(event report)，该第一事件报告包括第一事件以及第一本地局域网的指示信息，该第一事件包括终端移入或移出第一本地局域网的服务区域。
策略控制网元101，用于接收来自会话管理网元102的第一事件报告，并根据第一事件报告中的第一事件以及第一本地局域网的指示信息，更新终端对应的第一策略与计费控制(policy and charging control，PCC)之后，向会话管理网元102发送更新后的第一PCC规则。
会话管理网元102，用于接收来自策略控制网元101的更新后的第一PCC规则；并根据更新后的第一PCC规则，对终端的会话进行修改。
可选的，本申请实施例中的第一事件报告也可以替换为第一移动性事件报告(mobility event report)或其他名字，本申请实施例对此不作具体限定。
可选的，本申请实施例中，第一本地局域网的指示信息例如可以是第一本地局域网的标识或者第一本地局域网对应的第一在场报告区域(presence reporting area，PRA)标识(identify，ID)ID，本申请实施例对此不作具体限定。
可选的，本申请实施例中，会话管理网元102根据更新后的第一PCC规则，对终端的会话进行修改的相关实现可参考后续方法实施例，在此不再赘述。
可选的，本申请实施例中，策略控制网元101和会话管理网元102之间可以直接通信，也可以通过其他设备的转发进行通信，本申请实施例对此不作具体限定。
基于本申请实施例提供的通信系统，由于策略控制网元可以在接收包括第一事件以及第一本地局域网的指示信息的第一事件报告之后，更新终端对应的第一PCC规则，进而可以触发会话管理网元根据更新后的第一PCC规则，对终端的会话进行修改。因此，可以在终端的一个会话连接到多个本地局域网服务的情况下，使得可以基于该终端位置限制终端在一个或多个本地局域网内的通信。
或者，可选的，如图2所示，为本申请实施例提供的另一种通信系统20，该通信系统20包括会话管理网元201和移动管理网元202。
其中，移动管理网元202，用于向会话管理网元201发送第一事件报告，该第一事件报告包括第一事件以及第一本地局域网的指示信息，该第一事件包括终端移入或移出第一本地局域网的服务区域。
会话管理网元201，用于接收来自移动管理网元202的第一事件报告，并根据第一事件报告中的第一事件以及第一本地局域网的指示信息，对终端的会话进行修改。
其中，第一本地局域网的指示信息的相关描述可参考上述实施例，在此不再赘述。
可选的，本申请实施例中，会话管理网元102根据第一事件报告中的第一事件以及第一本地局域网的指示信息，对终端的会话进行修改的相关实现可参考后续方法实施例，在此不再赘述。
可选的，本申请实施例中，会话管理网元201和移动管理网元202之间可以直接通信，也可以通过其他设备的转发进行通信，本申请实施例对此不作具体限定。
基于本申请实施例提供的通信系统，由于会话管理网元可以在接收包括第一事件以及第一本地局域网的指示信息的第一事件报告之后，可以根据第一本地局域网的指示信息和第一事件报告对终端的会话进行修改。因此，可以在终端的一个会话连接到多个本地局域网服务的情况下，使得可以基于该终端位置限制终端在一个或多个本地局域网内的通信。
可选的，图1或图2所示的通信系统可以应用于目前的5G网络或者未来的其他网络，本申请实施例对此不作具体限定。
示例性的，如图3所示，若图1或图2所示的通信系统应用于目前的5G网络，则图1中的策略控制网元101所对应的网元或者实体可以为5G网络架构中的策略控制功能(policy control function，PCF)网元；图1中的会话管理网元102或者图2中的会话管理网元201所对应的网元或者实体可以为5G网络架构中的会话管理功能(session management function，SMF)；图2中的移动管理网元202所对应的网元或者实体可以为5G网络架构中的接入和移动性管理功能(core access and mobility management function，AMF)网元。
此外，若图1或图2所示的通信系统可以应用于目前的5G网络，则上述的第一本地局域网可以为5GLAN。可选的，从表达方式上看，本申请实施例中，5GLAN也可以称为LAN，LAN-类型服务(type service)，LAN-虚拟网络(virtual network，VN),5GLAN-type service，5GLAN-VN，5GLAN组(group)，或者LAN Group等，本申请实施例5GLAN的名字不作具体限定。
此外，如图3所示，目前的5G网络还可以包括接入设备、用户面功能(user plane function，UPF)网元、认证服务器功能(authentication server function，AUSF)网元、网络切片选择功能(network slice selection function，NSSF)网元、网络开放功能(network exposure function，NEF)网元、网络功能存储功能(network exposure function Repository Function，NRF)网元、、统一数据管理(Unified Data Management，UDM)网元以及应用功能(application function，AF)网元、LAN控制器(controller)等，本申请实施例对此不作具体限定。
其中，LAN控制器为本申请实施例在5G网络中新增的一个网元，负责对5GLAN进行管理，包括创建，修改，删除5GLAN的配置信息；还可以负责对接入5GLAN的终端进行验证和授权，以及对5GLAN的用户面路径进行管理等，具体功能可参考后续方法实施例，在此不予赘述。可选的，从表达方式上看，LAN控制器还可以为其他名字，如群组管理功能(group management function，GMF)网元，LAN管理功能(management function)网元，LAN服务管理功能(LAN service management function，LSMF)网元，5GLAN组管理功能(5GLAN group management function，5GMF)网元，5GLAN管理功能(management function)网元，LAN服务管理功能(5GLAN Service Management Function，5SMF)网元，5GLAN虚拟网络管理功能(5GLAN-VN management function，5LVMF)网元，5GLAN服务管理功能(5GLAN-type service management function，5LSMF)网元，LAN虚拟网络管理功能(LAN-VN management function，LVNMF)网元等，本申请实施例对此不作具体限定。
其中，如图3所示，终端通过接入设备接入5G网络，终端通过下一代网络(next generation，N)1接口(简称N1)与AMF网元通信；接入设备通过N2接口(简称N2)与AMF网元通信；接入设备通过N3接口(简称N3)与UPF网元通信；SMF网元通过N4接口(简称N4)与UPF网元通信；UPF网元通过N6接口(简称N6)接入数据网络。此外，图2所示的AUSF网元、AMF网元、SMF网元、NSSF网元、NEF网元、NRF网元、PCF网元、UDM网元或者AF网元等控制面网元也可以采用服务化接口进行交互。比如，AUSF网元对外提供的服务化接 口可以为Nausf；AMF网元对外提供的服务化接口可以为Namf；SMF网元对外提供的服务化接口可以为Nsmf；NSSG网元对外提供的服务化接口可以为Nnssf；NEF网元对外提供的服务化接口可以为Nnef；NRF网元对外提供的服务化接口可以为Nnrf；PCF网元对外提供的服务化接口可以为Npcf；UDM网元对外提供的服务化接口可以为Nudm；AF网元对外提供的服务化接口可以为Naf。相关描述可以参考23501标准中的5G系统架构(5G system architecture)图，在此不予赘述。此外，LAN控制器对外提供的服务化接口可以为Nlan。
图4所示为现有的5GLAN服务的用户面架构示意图。其中，终端建立到提供5GLAN服务的UPF网元的会话，从而接入到提供5GLAN服务的UPF网元。如上所述，提供5GLAN服务的UPF网元可以通过N6与数据网络中现存的LAN互通，例如和LAN中的个人计算机(personal computer，PC)通信；或者，提供5GLAN服务的UPF网元也可以通过内部UPF网元与UPF网元之间的连接关联不同终端的会话，实现私有通信，本申请实施例对此不作具体限定。
可选的，本申请实施例中所涉及到的终端(terminal)可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备；还可以包括用户单元(subscriber unit)、蜂窝电话(cellular phone)、智能电话(smart phone)、无线数据卡、个人数字助理(personal digital assistant，PDA)电脑、平板型电脑、无线调制解调器(modem)、手持设备(handheld)、膝上型电脑(laptop computer)、无绳电话(cordless phone)或者无线本地环路(wireless local loop，WLL)台、机器类型通信(machine type communication，MTC)终端、用户设备(user equipment，UE)，移动台(mobile station，MS)，终端设备(terminal device)或者中继用户设备等。其中，中继用户设备例如可以是5G家庭网关(residential gateway，RG)。为方便描述，本申请中，上面提到的设备统称为终端。
可选的，本申请实施例中所涉及的接入设备(包括上述的第一接入设备或第二接入设备)指的是接入核心网的设备，例如可以是基站，宽带网络业务网关(broadband network gateway，BNG)，汇聚交换机，非第三代合作伙伴计划(3rd generation partnership project，3GPP)接入设备等。基站可以包括各种形式的基站，例如：宏基站，微基站(也称为小站)，中继站，接入点等。
可选的，本申请实施例图1中的策略控制网元或者会话管理网元，或者图2中的会话管理网元或者移动管理网元可以由一个设备实现，也可以由多个设备共同实现，还可以是一个设备内的一个功能模块，本申请实施例对此不作具体限定。可以理解的是，上述功能既可以是硬件设备中的网络元件，也可以是在专用硬件上运行的软件功能，或者是平台(例如，云平台)上实例化的虚拟化功能。
例如，本申请实施例图1中的策略控制网元或者会话管理网元，或者图2中的会话管理网元或者移动管理网元可以通过图5中的通信设备来实现。图5所示为本申请实施例提供的通信设备的硬件结构示意图。该通信设备500包括处理器501，通信线路502，存储器503以及至少一个通信接口(图5中仅是示例性的以包括通信接口504为例进行说明)。
处理器501可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路。
通信线路502可包括一通路，在上述组件之间传送信息。
通信接口504，使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太 网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。
存储器503可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过通信线路502与处理器相连接。存储器也可以和处理器集成在一起。
其中，存储器503用于存储执行本申请方案的计算机执行指令，并由处理器501来控制执行。处理器501用于执行存储器503中存储的计算机执行指令，从而实现本申请下述实施例提供的本地局域网通信方法。
可选的，本申请实施例中的计算机执行指令也可以称之为应用程序代码，本申请实施例对此不作具体限定。
在具体实现中，作为一种实施例，处理器501可以包括一个或多个CPU，例如图5中的CPU0和CPU1。
在具体实现中，作为一种实施例，通信设备500可以包括多个处理器，例如图5中的处理器501和处理器507。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
在具体实现中，作为一种实施例，通信设备500还可以包括输出设备505和输入设备506。输出设备505和处理器501通信，可以以多种方式来显示信息。例如，输出设备505可以是液晶显示器(liquid crystal display，LCD)，发光二级管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备506和处理器501通信，可以以多种方式接收用户的输入。例如，输入设备506可以是鼠标、键盘、触摸屏设备或传感设备等。
上述的通信设备500可以是一个通用设备或者是一个专用设备。在具体实现中，通信设备500可以是台式机、便携式电脑、网络服务器、掌上电脑(personal digital assistant，PDA)、移动手机、平板电脑、无线终端设备、嵌入式设备或有图5中类似结构的设备。本申请实施例不限定通信设备500的类型。
下面将结合图1至图5对本申请实施例提供的本地局域网通信方法进行具体阐述。
需要说明的是，本申请下述实施例中各个网元之间的消息名字或消息中各参数的名字等只是一个示例，具体实现中也可以是其他的名字，本申请实施例对此不作具体限定。
首先，以图1所示的通信系统应用于如图3所示的5G网络为例。则如图6所示，为本申请实施例提供的一种本地局域网通信方法，该本地局域网通信方法可选的包括如下步骤S601-S602：
S601、LAN控制器向PCF网元发送第一配置(configure)信息。
相应的，PCF网元接收来自LAN控制器的第一配置信息。
可选的，本申请实施例中，第一配置信息可以包括5GLAN ID、以及与5GLAN ID对应的 服务区域信息；或者，第一配置信息可以包括PRA ID、以及与PRA ID对应的服务区域信息，本申请实施例对此不作具体限定。
可选的，本申请实施例中，服务区域信息用于标识一个特定的5GLAN的服务区域。该服务区域信息例如可以是地理位置信息、跟踪区(tracking area，TA)信息或者小区(cell)信息等，本申请实施例对此不作具体限定。可选的，本申请实施例中的TA信息例如可以是TA标识，或者，小区信息例如可以是小区标识等，本申请实施例对此不作具体限定。
可选的，本申请实施例中，若第一配置信息包括5GLAN ID、以及与5GLAN ID对应的服务区域信息，则第一配置信息中的5GLAN ID可以是一个或多个，相应的，与5GLAN ID对应的服务区域信息可以是一个或多个，其中，一个5GLAN ID对应一个服务区域信息，在此统一说明，以下不再赘述。示例性的，该第一配置信息可以如表一所示。
表一
5GLAN ID 服务区域信息
5GLAN ID1 服务区域信息1
5GLAN ID2 服务区域信息2
5GLAN ID3 服务区域信息3
...... ......
需要说明的是，上述表一仅是示例性的提供了一种第一配置信息(包括5GLAN ID和服务区域信息)的表格存储形式，当然，存储第一配置信息时，还可能有其他的表格存储方式或者其他非表格的存储方式等，本申请实施例对此不作具体限定。
或者，可选的，本申请实施例中，若第一配置信息包括PRA ID、以及与PRA ID对应的服务区域信息，则第一配置信息中的PRA ID可以是一个或多个，相应的，与PRA ID对应的服务区域信息可以是一个或多个，其中，一个PRA ID对应一个服务区域信息，在此统一说明，以下不再赘述。示例性的，该第一配置信息可以如表二所示。
表二
PRA ID 服务区域信息
PRA ID1 服务区域信息1
PRA ID2 服务区域信息2
PRA ID3 服务区域信息3
...... ......
需要说明的是，上述表二仅是示例性的提供了一种第一配置信息(包括PRA ID和服务区域信息)的表格存储形式，当然，存储第一配置信息时，还可能有其他的表格存储方式或者其他非表格的存储方式等，本申请实施例对此不作具体限定。
可选的，本申请实施例中，第一配置信息还可以包括与5GLAN ID对应的数据网络名称(data network name，DNN)，本申请实施例对此不作具体限定。
示例性的，以第一配置信息包括5GLAN ID、以及与5GLAN ID对应的服务区域信息为例，在第一配置信息包括多个5GLAN ID的情况下，不同的5GLAN ID可能对应不同的DNN。比如，如表三所示，5GLAN ID1和5GLAN ID2可以对应DNN1；5GLAN ID3可以对应DNN2。
表三
Figure PCTCN2019101980-appb-000001
Figure PCTCN2019101980-appb-000002
或者，示例性的，以第一配置信息包括5GLAN ID、以及与5GLAN ID对应的服务区域信息为例，在第一配置信息包括多个5GLAN ID的情况下，多个5GLAN ID可能对应相同的DNN，也就是说，第一配置信息可以是针对一个数据网络的配置信息。比如，如表四所示，5GLAN ID1、5GLAN ID2和5GLAN ID3等均可以对应DNN1。
表四
Figure PCTCN2019101980-appb-000003
需要说明的是，上述表三或表四仅是示例性的提供了一种第一配置信息(包括DNN、5GLAN ID和服务区域信息)的表格存储形式，当然，存储第一配置信息时，还可能有其他的表格存储方式或者其他非表格的存储方式等，本申请实施例对此不作具体限定。
可选的，若第一配置信息包括PRA ID、以及与PRA ID对应的服务区域信息，则此时仅需将表三或表四中的5GLAN ID替换为对应的PRA ID即可，在此不再赘述。
其中，本申请实施例中，5GLAN ID可以理解为一个5GLAN群组的标识。也就是说，5GLAN ID可用于标识一个5GLAN群组，或者一个5GLAN-VN，或者一个特定的5GLAN服务。采用同一5GLAN ID的终端属于同一5GLAN群组，可以使用该5GLAN ID对应的5GLAN服务或者可以使用该5GLAN ID对应的5GLAN-VN，即采用同一5GLAN ID的终端之间可以进行5GLAN私有通信，在此统一说明，以下不再赘述。
可选的，从格式上来说，5GLAN ID可以是特殊的域名(如数据网络名称(data network name，DNN))、全量域名(fully qualified domain name，FQDN)、VID、字符串、内部组标识(internal group identifier)、外部组标识(external group identifier)，也可以是序列号等。此外，LAN ID还可采用一些特殊的格式，例如LAN ID中还可包括提供商信息、运营商信息、网络信息、域信息等，本申请实施例对此不作具体限定。
S602、PCF网元向AMF网元发送第二配置信息。
相应的，AMF网元接收来自PCF网元的第二配置信息。
可选的，本申请实施例中，若上述第一配置信息中包括5GLAN ID、以及与5GLAN ID对应的服务区域信息，则相应的，第二配置信息例如可以包括5GLAN ID、以及与5GLAN ID对应的服务区域信息。比如，第二配置信息可以如上述表一所示。
或者，本申请实施例中，若上述第一配置信息中包括5GLAN ID、以及与5GLAN ID对应的服务区域信息，则相应的，第二配置信息例如可以包括PRA ID、以及与PRA ID对应的服务区域信息。此时，这里的PRA ID可以为5GLAN ID，也可以是PCF网元根据5GLAN ID确定的，本申请实施例对此不作具体限定。也就是说，在PRA ID不是5GLAN ID的情况下，PCF网元可以获知5GLAN ID和PRA ID的对应关系，其中，一个PRA ID与一个5GLAN ID对应。 比如，5GLAN ID和PRA ID的对应关系可以如表五所示：
表五
5GLAN ID PRA ID
5GLAN ID1 PRA ID1
5GLAN ID2 PRA ID2
5GLAN ID3 PRA ID3
...... ......
需要说明的是，上述表五仅是示例性的提供了一种5GLAN ID和PRA ID的对应关系的表格存储形式，当然，存储5GLAN ID和PRA ID的对应关系时，还可能有其他的表格存储方式或者其他非表格的存储方式等，本申请实施例对此不作具体限定。
可选的，本申请实施例中，5GLAN ID和PRA ID的对应关系可能是预先配置在PCF网元上的，也可能是动态生成的，本申请实施例对此不作具体限定。
进而，由于一个5GLAN ID对应一个PRA ID和一个服务区域信息，因此，与一个5GLAN ID对应的一个PRA ID和一个服务区域信息也存在对应关系。也就是说，本申请实施例中的第二配置信息可以如表六所示：
表六
PRA ID 服务区域信息
PRA ID1 服务区域信息1
PRA ID2 服务区域信息2
PRA ID3 服务区域信息3
...... ......
需要说明的是，上述表六仅是示例性的提供了一种第二配置信息(包括PRA ID和服务区域信息)的表格存储形式，当然，存储第二配置信息时，还可能有其他的表格存储方式或者其他非表格的存储方式等，本申请实施例对此不作具体限定。
或者，可选的，本申请实施例中，若上述第一配置信息中包括PRA ID、以及与PRA ID对应的服务区域信息，则相应的，第二配置信息例如可以包括PRA ID、以及与PRA ID对应的服务区域信息。比如，第二配置信息可以如上述表二所示。
可选的，本申请实施例中，PCF网元可以是在某个终端注册过程中向AMF网元发送第二配置信息；也可以是在接收到第一配置信息之后，向AMF网元发送第二配置信息，和注册无关，本申请实施例对此不作具体限定。
此外，本申请实施例提供的本地局域网通信方法还可以包括如下步骤：
S603、终端向AMF网元发送非接入层(non-access stratum，NAS)消息。
相应的，终端接收来自AMF网元的NAS消息。
其中，本申请实施例中，该NAS消息包括会话建立请求消息、PDU会话标识(session ID)和5GLAN ID。可选的，该NAS消息包括终端的会话对应的DNN。其中，本申请实施例以假设终端的会话对应的DNN为DNN1为例进行后续说明，在此统一说明。
可选的，本申请实施例中，步骤S603中的NAS消息中的5GLAN ID可以是一个或多个，本申请实施例对此不作具体限定。
S604、AMF网元向SMF网元发送N11消息。
相应的，SMF网元接收来自AMF网元的N11消息。
其中，本申请实施例中，该N11消息包括上述的会话建立请求消息、PDU会话标识和5GLAN ID。此外，该N11消息还可以包括终端的标识。可选的，若上述NAS消息包括DNN1，则该N11消息还可以包括DNN1，本申请实施例对此不作具体限定。
可选的，本申请实施例中，终端的标识例如可以是签约永久标识(subscription permanent identifier,SUPI)，国际移动用户识别码(international mobile subscriber identification number，IMSI)移动台综合业务数字网号码(mobile station integrated services digital network number，MSISDN)，全球唯一临时标识(global unique temporary identifier，GUTI)，数据网络相关的身份标识(例如为网络接入标识(network access identifier，NAI)或者5GLAN特定的用户标识等，本申请实施例对此不作具体限定。
S605、SMF网元获取终端的地址或者终端的虚拟本地局域网标识(virtual local area network identify,VID)。
可选的，本申请实施例中，SMF网元获取终端的地址或者终端的VID的方式可参考现有方式，如本地分配终端的地址或者终端的VID；或者从UDM网元获取终端的地址或者终端的VID；或者从动态主机配置协议(dynamic host configuration protocol，DHCP)服务器获取终端的地址或者终端的VID；或者从数据网络鉴权、授权、计费(DN-authentication-authorization-accounting，DN-AAA)服务器获取终端的地址或者终端的VID等，在此不予赘述。
可选的，本申请实施例中，SMF网元获取的终端的地址或者终端的VID与上述步骤S604中的N11消息中的5GLAN ID相对应。比如，若上述步骤S604中的N11消息中的5GLAN ID为一个，则SMF网元获取的终端的地址或者终端的VID为一个；或者，若上述步骤S604中的N11消息中的5GLAN ID为多个，则SMF网元获取的终端的地址或者终端的VID可以为多个，在此统一说明，以下不再赘述。
可选的，本申请实施例中，终端的地址例如可以是第四版互联网协议(internet protocol version4，IPv4)地址，第六版互联网协议(internet protocol version6，Ipv6)IPv6地址，媒体接入控制(media access control，MAC)地址等，本申请实施例对此不作具体限定。
S606、SMF网元向PCF网元发送会话管理(session management，SM)策略请求消息。
相应的，PCF网元接收来自SMF网元的SM策略请求消息。
可选的，本申请实施例中，若步骤S605中SMF网元获取的为终端的地址，则该策略请求消息包括5GLAN ID和对应的终端的地址；或者，若步骤S605中SMF网元获取的为终端的VID，则该策略请求消息包括5GLAN ID和对应的终端的VID，本申请实施例对此不作具体限定。
其中，步骤S606中SM策略请求消息中的5GLAN ID即为上述N11消息中的5GLAN ID。
可选的，本申请实施例中，若上述N11消息中包括DNN1，则该SM策略请求消息还包括DNN1，本申请实施例对此不作具体限定。
可选的，本申请实施例中，若策略请求消息包括5GLAN ID和对应的终端的地址，则PCF网元接收来自SMF网元的SM策略请求消息之后，可以存储5GLAN ID和终端的地址的对应关系，结果如表七所示：
表七
5GLAN ID 终端的地址
5GLAN ID1 地址1
5GLAN ID2 地址2
5GLAN ID3 地址3
...... ......
或者，可选的，本申请实施例中，若策略请求消息包括5GLAN ID和对应的终端的地址，则PCF网元接收来自SMF网元的SM策略请求消息之后，可以存储PRA ID和终端的地址的对应关系，结果如表八所示；或者存储5GLAN ID、PRA ID和终端的地址的对应关系，结果如表九所示。其中，PCF网元根据5GLAN ID确定PRA ID的方式可参考上述步骤S602，在此不再赘述。
表八
PRA ID 终端的地址
PRA ID1 地址1
PRA ID2 地址2
PRA ID3 地址3
...... ......
表九
5GLAN ID PRA ID 终端的地址
5GLAN ID1 PRA ID1 地址1
5GLAN ID2 PRA ID2 地址2
5GLAN ID3 PRA ID3 地址3
...... ...... ......
需要说明的是，上述表七至表九仅是示例性的提供了一种5GLAN ID或PRA ID中的至少一个与终端的地址的对应关系的表格存储形式，当然，存储5GLAN ID或PRA ID中的至少一个与终端的地址的对应关系时，还可能有其他的表格存储方式或者其他非表格的存储方式等，本申请实施例对此不作具体限定。
或者，可选的，本申请实施例中，若策略请求消息包括5GLAN ID和对应的终端的VID，则PCF网元接收来自SMF网元的SM策略请求消息之后，可以存储5GLAN ID和终端的VID的对应关系，结果如表十所示：
表十
5GLAN ID 终端的VID
5GLAN ID1 VID1
5GLAN ID2 VID2
5GLAN ID3 VID3
...... ......
或者，可选的，本申请实施例中，若策略请求消息包括5GLAN ID和对应的终端的VID，则PCF网元接收来自SMF网元的SM策略请求消息之后，可以存储PRA ID和终端的VID的对应关系，结果如表十一所示；或者存储5GLAN ID、PRA ID和终端的VID的对应关系，结果如表十二所示。其中，PCF网元根据5GLAN ID确定PRA ID的方式可参考上述步骤S602，在此不再赘述。
表十一
PRA ID 终端的VID
PRA ID1 VID1
PRA ID2 VID2
PRA ID3 VID3
...... ......
表十二
5GLAN ID PRA ID 终端的VID
5GLAN ID1 PRA ID1 VID1
5GLAN ID2 PRA ID2 VID2
5GLAN ID3 PRA ID3 VID3
...... ...... ......
需要说明的是，上述表十至表十二仅是示例性的提供了一种5GLAN ID或PRA ID中的至少一个与终端的VID的对应关系的表格存储形式，当然，存储5GLAN ID或PRA ID中的至少一个与终端的VID的对应关系时，还可能有其他的表格存储方式或者其他非表格的存储方式等，本申请实施例对此不作具体限定。
S607、PCF网元向SMF网元发送第一订阅(subscription)请求消息。
相应的，SMF网元接收来自PCF网元的第一订阅请求消息。
其中，该第一订阅请求消息包括5GLAN ID或者与5GLAN ID对应的PRA ID中的至少一个。这里的5GLAN ID或PRA ID为有服务区域限制的5GLAN对应的5GLAN ID。比如，从上述步骤S606中的SM策略请求消息中的5GLAN ID中选择的与步骤S601中的5GLAN ID有交集的5GLAN ID，或者，从上述步骤S606中的SM策略请求消息中的5GLAN ID中选择的与步骤S601中的PRA ID对应的5GLAN ID有交集的5GLAN ID。
可选的，本申请实施例中，若步骤S606中SM策略请求消息中还包括DNN1，则PCF网元可以结合DNN1确定第一订阅请求消息中的5GLAN ID或PRA ID，本申请实施例对此不作具体限定。
可选的，本申请实施例中，若执行上述步骤S601，不执行上述步骤S602，则该第一订阅请求消息中还包括与5GLAN ID或者PRA ID对应的服务区域信息，本申请实施例对此不作具体限定。
或者，可选的，本申请实施例中，若执行上述步骤S602，则若步骤S602中的第二配置信息为PRA ID和对应的服务区域信息，则第一订阅请求消息中需要包括PRA ID。
或者，可选的，本申请实施例中，若执行上述步骤S602，则若步骤S602中的第二配置信息为5GLAN ID和对应的服务区域信息，则第一订阅请求消息中需要包括5GLAN ID，在此统一说明，以下不再赘述。
可选的，本申请实施例中，若需要针对多个5GLAN ID或者多个PRA ID进行订阅，则可以是通过一个订阅请求消息进行多个订阅；或者，还可以是对于每个5GLAN ID或者每个PRA ID，分别通过一个订阅请求消息进行订阅，本申请实施例对此不作具体限定。
可选的，本申请实施例中的第一订阅请求消息还可以替换为第一移动性事件订阅(mobility event subscription)请求消息，本申请实施例对此不作具体限定。
S608、SMF网元向AMF网元发送第二订阅(subscription)请求消息。
相应的，AMF网元接收来自SMF网元的第二订阅请求消息。
其中，该第二订阅请求消息包括第一订阅请求消息中的信息。比如，若第一订阅请求消息中包括PRA ID，则第二订阅请求消息中包括PRA ID；或者，若第一订阅请求消息中包括5GLAN ID，则第二订阅请求消息中包括5GLAN ID；或者，若第一订阅请求消息中包括5GLAN ID和PRA ID，则第二订阅请求消息中包括5GLAN ID和PRA ID，本申请实施例对此不作具体限定。此外，若第一订阅请求消息还包括与5GLAN ID或者PRA ID对应的服务区域信息，则相应的，第二订阅请求消息还包括与5GLAN ID或者PRA ID对应的服务区域信息，本申请实施例对此不作具体限定。
可选的，本申请实施例中，若需要针对多个5GLAN ID或者多个PRA ID进行订阅，则可以是通过一个订阅请求消息进行多个订阅；或者，还可以是对于每个5GLAN ID或者每个PRA ID，分别通过一个订阅请求消息进行订阅，本申请实施例对此不作具体限定。
可选的，本申请实施例中的第二订阅请求消息还可以替换为第二移动性事件订阅(mobility event subscription)请求消息，本申请实施例对此不作具体限定。
S609、AMF网元检测终端在订阅的5GLAN的服务区域内的移动性事件。
可选的，本申请实施例中，若第二订阅请求消息中包括与5GLAN ID或者PRA ID对应的服务区域信息，则AMF网元可以根据与5GLAN ID或者PRA ID对应的服务区域信息，检测终端在订阅的5GLAN的服务区域内的移动性事件。
或者，可选的，本申请实施例中，若第二订阅请求消息中不包括与5GLAN ID或者PRA ID对应的服务区域信息，而是执行上述步骤S602，步骤S602中的第二配置信息为PRA ID和对应的服务区域信息，则AMF网元可以根据第二订阅请求消息中包括的PRA ID，结合上述第二配置信息，确定对应的服务区域信息，进而根据该服务区域信息，检测终端在订阅的5GLAN的服务区域内的移动性事件，本申请实施例对此不作具体限定。
或者，可选的，本申请实施例中，若第二订阅请求消息中不包括与5GLAN ID或者PRA ID对应的服务区域信息，而是执行上述步骤S602，步骤S602中的第二配置信息为5GLAN ID和对应的服务区域信息，则AMF网元可以根据第二订阅请求消息中包括的5GLAN ID，结合上述第二配置信息，确定对应的服务区域信息，进而根据该服务区域信息，检测终端在订阅的5GLAN的服务区域的移动性事件，本申请实施例对此不作具体限定。
可选的，本申请实施例中，若AMF网元接受第二订阅请求或者AMF网元检测到终端在订阅的5GLAN的服务区域内的移动性事件，比如终端移入或移出订阅的5GLAN1的服务区域，则本申请实施例提供的本地局域网通信方法还可以包括如下步骤：
S610、AMF网元向SMF网元发送第一事件报告。
相应的，SMF网元接收来自AMF网元的第一事件报告。
其中，第一事件报告包括第一事件和5GLAN1的指示信息。第一事件包括终端移入或移出5GLAN1的服务区域。5GLAN1的指示信息例如可以是5GLAN ID1或者PRA ID1。
可选的，本申请实施例中，5GLAN1的指示信息例如可以包括5GLAN ID1或者PRA ID1，本申请实施例对此不作具体限定。
需要说明的是，若第二订阅请求消息中包括5GLAN ID，则相应的5GLAN1的指示信息例如可以包括5GLAN ID1；或者，若第二订阅请求消息中包括PRA ID，则相应的5GLAN1的指示信息例如可以包括PRA ID1，在此统一说明，以下不再赘述。
S611、SMF网元向PCF网元发送上述第一事件报告。
相应的，PCF网元接收来自SMF网元的上述第一事件报告。
S612、PCF网元根据第一事件和5GLAN1的指示信息，更新终端对应的第一PCC规则。
可选的，本申请实施例中，若5GLAN1的指示信息为5GLAN ID1，则PCF网元根据第一事件和5GLAN1的指示信息，更新终端对应的第一PCC规则例如可以是：PCF网元根据5GLAN ID1，结合上述5GLAN ID1和对应的终端的地址的对应关系(如表七或表九)，确定与5GLAN ID1对应的终端的地址，进而根据第一事件和确定出的终端的地址，更新终端对应的第一PCC规则。
或者，可选的，本申请实施例中，若5GLAN1的指示信息为5GLAN ID1，则PCF网元根据第一事件和5GLAN1的指示信息，更新终端对应的第一PCC规则例如可以是：PCF网元根据5GLAN ID1，结合上述5GLAN ID1和对应的终端的VID的对应关系(如表十或表十二)，确定与5GLAN ID1对应的终端的VID，进而根据第一事件和确定出的终端的VID，更新终端对应的第一PCC规则。
或者，可选的，本申请实施例中，若5GLAN1的指示信息为PRA ID1，则PCF网元根据第一事件和5GLAN1的指示信息，更新终端对应的第一PCC规则例如可以是：PCF网元根据PRA ID1，结合上述PRA ID1和对应的终端的地址的对应关系(如表八或表九)，确定与PRA ID1对应的终端的地址，进而根据第一事件和确定出的终端的地址，更新终端对应的第一PCC规则。
或者，可选的，本申请实施例中，若5GLAN1的指示信息为PRA ID1，则PCF网元根据第一事件和5GLAN1的指示信息，更新终端对应的第一PCC规则例如可以是：PCF网元根据PRA ID1，结合上述PRA ID1和对应的终端的VID的对应关系(如表十一或表十二)，确定与PRA ID1对应的终端的VID，进而根据第一事件和确定出的终端的VID，更新终端对应的第一PCC规则。
可选的，本申请实施例中，PCF网元根据第一事件和确定出的终端的地址，更新终端对应的第一PCC规则，例如可以包括：若第一事件是终端移入5GLAN1的服务区域，则确定与终端的地址关联的过滤器和服务质量(quality of service，QoS)参数，并将该过滤器和QoS参数添加到第一PCC规则中，得到更新后的第一PCC规则；或者，若第一事件是终端移出5GLAN1的服务区域，则确定与终端的地址关联的过滤器和QoS参数，并将该过滤器和QoS参数从第一PCC规则中删除，得到更新后的第一PCC规则。
或者，可选的，本申请实施例中，PCF网元根据第一事件和确定出的终端的VID，更新终端对应的第一PCC规则，例如可以包括若第一事件是终端移入5GLAN1的服务区域，则确定与终端的VID关联的过滤器和QoS参数，并将该过滤器和QoS参数添加到第一PCC规则中，得到更新后的第一PCC规则；或者，若第一事件是终端移出5GLAN1的服务区域，则确定与终端的VID关联的过滤器和QoS参数，并将该过滤器和QoS参数从第一PCC规则中删除，得到更新后的第一PCC规则。
S613、PCF网元向SMF网元发送更新后的第一PCC规则。
相应的，SMF网元接收来自PCF网元的更新后的第一PCC规则。
S614、SMF网元根据更新后的第一PCC规则，对终端的会话进行修改。
可选的，一种可能的实现方式中，本申请实施例中，SMF网元根据更新后的第一PCC规则，对终端的会话进行修改，可以包括：若更新后的第一PCC规则指示允许终端在5GLAN1路由数据，SMF网元指示UPF网元设置第一路由规则，其中，第一路由规则包括终端的地址或者终端的VID，用于关联会话与5GLAN1。比如，若更新后的第一PCC规则中包括与终端的地址关联的过滤器和QoS参数，则可以指示允许终端在5GLAN1路由数据，进而SMF网元可以指示UPF网元设置第一路由规则，其中，第一路由规则包括终端的地址；或者，比如，若更新 后的第一PCC规则中包括与终端的VID关联的过滤器和QoS参数，则可以指示允许终端在5GLAN1路由数据，进而SMF网元可以指示UPF网元设置第一路由规则，其中，第一路由规则包括终端的VID。
可选的，在上述情况中，若终端的会话已经去激活，SMF网元还需要激活终端的会话的用户面连接。如SMF网元在收到下行数据通知或者下行数据时，向AMF网元发送N11消息(Namf_Communication_N1N2MessageTransfer)，为该终端的会话触发网络触发的服务请求过程，以激活终端的会话的用户面连接；或者，SMF网元在收到AMF网元发送的N11消息(Nsmf_PDUSession_UpdateSMContext Request)之后，激活终端的会话的用户面连接。
或者，可选的，另一种可能的实现方式中，本申请实施例中，SMF网元根据更新后的第一PCC规则，对终端的会话进行修改，可以包括：若更新后的第一PCC规则指示不允许终端在5GLAN1路由数据，SMF网元指示UPF网元删除第一路由规则，其中，第一路由规则包括终端的地址或者终端的VID，用于关联会话与5GLAN1。比如，若更新后的第一PCC规则中不包括与终端的地址关联的过滤器和QoS参数，则可以指示不允许终端在5GLAN1路由数据，进而SMF网元指示UPF网元删除第一路由规则，其中，第一路由规则包括终端的地址或者终端的VID。
可选的，在上述情况中，若终端的会话仅允许接入5GLAN1，SMF网元还需要去激活该终端的会话的用户面连接，同时SMF网元要确保数据通知被禁用。若一段时间后SMF网元没有被通知终端移入5GLAN1的服务区域，则SMF网元释放该终端的会话；或者SMF网元直接释放该终端的会话。
可选的，本申请实施例中，SMF网元指示UPF网元设置第一路由规则，例如可以包括：SMF网元根据终端的地址或终端的VID确定第一路由规则，将第一路由规则携带在N4会话修改/创建消息中发送给UPF网元，由UPF网元设置第一路由规则。
可选的，本申请实施例中，SMF网元指示UPF网元删除第一路由规则，例如可以包括：SMF网元根据终端的地址或终端的VID确定第一路由规则，将第一路由规则从终端的会话的路由规则中删除，并将更新后的不包括第一路由规则的终端的会话规则携带在N4会话修改/释放消息中发送给UPF网元，由UPF网元根据该不包括第一路由规则的终端的会话规则删除本地的第一路由规则。或者，SMF网元5GLAN ID携带在在N4会话修改/释放消息中发送给UPF网元，由UPF网元根据5GLAN ID删除第一路由规则。
可选的，本申请实施例中，SMF网元在接收更新后的第一PCC规则后，可以通过如下方式确定终端的地址或终端的VID：SMF网元将本地存储的终端对应的会话PCC规则与更新后的第一PCC规则比较，进而确定终端的地址或终端的VID。例如，更新后的第一PCC规则相比本地存储的终端对应的会话PCC规则增加了包括终端的地址或终端的VID的PCC规则，或者更新后的第一PCC规则相比本地存储的终端对应的会话PCC规则减少了包括终端的地址或终端的VID的PCC规则，则可以确定增加的PCC规则或者减少的PCC规则相关的终端的地址或终端的VID为终端的地址或终端的VID。
基于上述本地局域网通信方法，可以在终端的一个会话连接到多个5GLAN服务的情况下，使得可以基于该终端位置限制终端在一个或多个5GLAN内的通信。相关技术效果分析可参考图1所示的通信系统部分，在此不再赘述。
其中，上述步骤S601至S614中的PCF网元或者SMF网元的动作可以由图5所示的通信设备500中的处理器501调用存储器503中存储的应用程序代码来执行，本实施例对此不作 任何限制。
可选的，以图2所示的通信系统应用于如图3所示的5G网络为例。则如图7所示，为本申请实施例提供的一种本地局域网通信方法，该本地局域网通信方法可选的包括如下步骤S701：
S701、LAN控制器向AMF网元发送配置信息。
相应的，AMF网元接收来自PCF网元的配置信息。
其中，本申请实施例中的配置信息可以与图6所示的实施例中的第二配置信息相同，相关描述可参考图6所示的实施例，在此不再赘述。
可选的，本申请实施例中，LAN控制器可以直接向AMF网元发送上述配置信息，也可以是通过其他网元，如PCF网元向AMF网元发送上述配置信息，本申请实施例对此不作具体限定。
此外，本申请实施例提供的本地局域网通信方法还可以包括如下步骤S702-S704：
S702-S704、同图6所示的实施例中的步骤S603-S605，相关描述可参考图6所示的实施例，在此不再赘述。
此外，本申请实施例中，在SMF网元确定终端的地址之后，还可以存储5GLAN ID和终端的地址的对应关系(比如可以如表七所示)；后者，在SMF网元确定终端的地址之后，若后续SMF网元可以获取与5GLAN ID对应的PRA ID，SMF网元还可以存储PRA ID和终端的地址的对应关系(比如可以如表八所示)或者存储5GLAN ID、PRA ID和终端的地址的对应关系(比如可以如表九所示)；或者，在SMF网元确定终端的VID之后，还可以存储5GLAN ID和终端的VID的对应关系(比如可以如表十所示)；或者，在SMF网元确定终端的VID之后，若后续SMF网元可以获取与5GLAN ID对应的PRA ID，SMF网元还可以存储PRA ID和终端的VID的对应关系(比如可以如表十所示)或者存储5GLAN ID、PRA ID和终端的VID的对应关系(比如可以如表十一所示)，本申请实施例对此不作具体限定。
可选的，本申请实施例中，若不执行上述步骤S701，则本申请实施例提供的本地局域网通信方法还可以包括如下步骤S705-S707：
S705、SMF网元向LAN控制器发送5GLAN信息认证或获取请求消息。
相应的，LAN控制器接收来自SMF网元的5GLAN信息认证或获取请求消息。
其中，本申请实施例中，该5GLAN信息认证或获取请求消息可以包括5GLAN ID，该5GLAN ID即为上述N11消息中的5GLAN ID。
可选的，该5GLAN信息认证或获取请求消息还可以包括DNN1，本申请实施例对此不作具体限定。
S706、LAN控制器确定与5GLAN ID对应的服务区域信息。
其中，本申请实施例中，若5GLAN信息认证或获取请求消息中包括的5GLAN ID为多个，则LAN控制器可以确定多个服务区域信息。其中，一个服务区域信息对应一个5GLAN ID。
可选的，若5GLAN信息认证或获取请求消息中包括的5GLAN ID没有对应的服务区域信息，则LAN控制器不需要确定与5GLAN ID对应的服务区域信息；或者，若5GLAN信息认证或获取请求消息中包括多个5GLAN ID，一部分5GLAN ID没有对应的服务区域信息，一部分5GLAN ID有对应的服务区域信息，则此时针对有对应的服务区域信息的5GLAN ID，LAN控制器确定与5GLAN ID对应的服务区域信息，在此统一说明，以下不再赘述。
可选的，本申请实施例中，LAN控制器可能配置有5GLAN ID和服务区域信息的对应关系， 该对应关系例如可以如上述表一所示的。进而，在LAN控制器接收5GLAN ID之后，根据该对应关系，可以确定出对应的服务区域信息。
或者，可选的，本申请实施例中，LAN控制器可能配置有DNN、5GLAN ID和服务区域信息的对应关系，该对应关系例如可以如上述表三或表四所示的。进而，在LAN控制器接收DNN1和5GLAN ID之后，根据该对应关系，可以确定出对应的服务区域信息。
S707、LAN控制器向SMF网元发送5GLAN信息认证或获取响应消息。
相应的，SMF网元接收来自LAN控制器的5GLAN信息认证或获取响应消息。
其中，该5GLAN信息认证或获取响应消息包括5GLAN ID或者PRA ID中的至少一个、以及对应的服务区域信息。比如，若该5GLAN信息认证或获取响应消息包括5GLAN ID和对应的服务区域信息，则5GLAN ID和对应的服务区域信息可以如上述表一所示；或者，比如，若该5GLAN信息认证或获取响应消息包括PRA ID和对应的服务区域信息，则PRA ID和对应的服务区域信息可以如上述表二所示；或者，比如，若该5GLAN信息认证或获取响应消息包括5GLAN ID、PRA ID和对应的服务区域信息，则5GLAN ID、PRA ID和对应的服务区域信息可以如表十三所示。
表十三
5GLAN ID PRA ID 服务区域信息
5GLAN ID1 PRA ID1 服务区域信息1
5GLAN ID2 PRA ID2 服务区域信息2
5GLAN ID3 PRA ID3 服务区域信息3
...... ...... ......
需要说明的是，上述表十三仅是示例性的提供了一种5GLAN ID、PRA ID和对应的服务区域信息的表格关联形式，当然，GLAN ID、PRA ID和对应的服务区域信息还可能通过其他方式进行关联，本申请实施例对此不作具体限定。
可选的，本申请实施例中，若执行上述步骤S701，则SMF网元也可以向LAN控制器发送5GLAN信息认证或获取请求消息。相应的，LAN控制器接收来自SMF网元的5GLAN信息认证或获取请求消息。其中，该5GLAN信息认证或获取请求消息可以包括5GLAN ID，该5GLAN ID即为上述N11消息中的5GLAN ID。进而，LAN控制器可以向SMF网元发送5GLAN信息认证或获取响应消息。相应的，SMF网元接收来自LAN控制器的5GLAN信息认证或获取响应消息。其中，该5GLAN信息认证或获取响应消息包括与5GLANID对应的PRA ID，本申请实施例对此不作具体限定。
可选的，本申请实施例中，若步骤S703中的N11消息中包括多个5GLAN ID，则也可以在S705携带多个5GLAN ID，通过执行一次步骤S705-S707的方式来获取与每个5GLAN ID对应的服务区域信息。该情况下，5GLAN信息认证或获取响应消息中可以针对每个5GLAN ID携带5GLAN ID和服务区域信息；或者，5GLAN信息认证或获取响应消息中可以针对每个5GLAN ID携带PRA ID和服务区域信息；或者，5GLAN信息认证或获取响应消息中可以针对每个5GLAN ID携带5GLAN ID、PRA ID和服务区域信息，本申请实施例对此不作具体限定。
可选的，本申请实施例中，若步骤S703中的N11消息中包括多个5GLAN ID，则也可以是通过执行多次步骤S705-S707的方式来分别获取与每个5GLAN ID对应的服务区域信息。该情况下，5GLAN信息认证或获取响应消息中可以不包括5GLAN ID或PRA ID，包括服务区域信息即可，本申请实施例对此不作具体限定。
或者，可选的，本申请实施例中，若执行上述步骤S701，则本申请实施例提供的本地局域网通信方法中，在执行完上述步骤S703之后，也可以执行上述步骤S705，进而，LAN控制器可以确定5GLAN信息认证或获取请求消息中的5GLAN ID对应的5GLAN是否有服务区域限制，进而LAN控制器向SMF网元发送5GLAN信息认证或获取响应消息。相应的，SMF网元接收来自LAN控制器的5GLAN信息认证或获取响应消息。其中，该5GLAN信息认证或获取响应消息包括5GLAN ID或者PRA ID中的至少一个、以及对应的服务区域限制指示信息。使得后续SMF网元可以根据该服务区域限制指示信息，向AMF网元发送订阅请求消息，本申请实施例对此不作具体限定。
S708、SMF网元向AMF网元发送订阅(subscription)请求消息。
相应的，AMF网元接收来自SMF网元的订阅请求消息。
其中，该订阅请求消息包括5GLAN ID、或者与5GLAN ID对应的PRA ID对应的中的至少一个。这里的5GLAN ID或PRA ID为有服务区域限制的5GLAN对应的5GLAN ID。比如，这里的5GLAN ID可以为上述步骤S707中的5GLAN信息认证或获取响应消息中的5GLAN ID；或者，这里的5GLAN ID可以为与上述步骤S707中的5GLAN信息认证或获取响应消息中的PRA ID对应的5GLAN ID；或者，这里的5GLAN ID可以为根据上述步骤S707中的5GLAN信息认证或获取响应消息中的服务区域限制指示信息确定的5GLAN ID。
可选的，该订阅请求消息还可以包括与5GLAN ID或PRA ID对应的服务区域信息。比如，若执行上述步骤S705-S707，且该5GLAN信息认证或获取响应消息包括PRA ID和对应的服务区域信息，或者该5GLAN信息认证或获取响应消息包括5GLAN ID、PRA ID和对应的服务区域信息，则该订阅请求消息中可以包括PRA ID和对应的服务区域信息；或者，比如，若执行上述步骤S705-S707，且该5GLAN信息认证或获取响应消息包括与5GLAN ID对应的服务区域信息，则该订阅请求消息包括5GLAN ID和对应的服务区域信息；或者，比如，若执行步骤S701，不执行上述步骤S705-S707，则该订阅请求消息中可以包括5GLAN ID，本申请实施例对此不作具体限定。
可选的，本申请实施例中，若需要针对多个5GLAN ID或者多个PRA ID进行订阅，则可以是通过一个订阅请求消息进行多个订阅；或者，还可以是对于每个5GLAN ID或者每个PRA ID，分别通过一个订阅请求消息进行订阅，本申请实施例对此不作具体限定。
可选的，本申请实施例中的订阅请求消息还可以替换为移动性事件订阅(mobility event subscription)请求消息，本申请实施例对此不作具体限定。
S709-S710、同图6所示的实施例中的步骤S609-S610，相关描述可参考图6所示的实施例，在此不再赘述。
S711、SMF网元根据第一事件和5GLAN1的指示信息，对终端的会话进行修改。
可选的，本申请实施例中，一种可能的实现方式中，SMF网元根据第一事件和5GLAN1的指示信息，对终端的会话进行修改，可以包括：若SMF网元根据第一事件和5GLAN1的指示信息，确定允许终端在5GLAN1路由数据，SMF网元指示UPF网元设置第一路由规则，其中，第一路由规则包括终端的地址或者终端的VID，用于关联会话与5GLAN1。其中，该终端的地址可以是根据第一事件报告中的5GLAN1的指示信息，结合5GLAN1的指示信息和终端的地址的对应关系(如表七、表八或表九所示)确定的；或者，该终端的VID可以是根据第一事件报告中的5GLAN1的指示信息，结合5GLAN1的指示信息和终端的VID的对应关系(如表十、表十一或表十二所示)确定的。
可选的，在上述情况中，若终端的会话已经去激活，SMF网元还需要激活终端的会话的用户面连接，相关描述可参考图6所示的实施例中的步骤S614，在此不再赘述。
或者，可选的，本申请实施例中，另一种可能的实现方式中，SMF网元根据第一事件和5GLAN1的指示信息，对终端的会话进行修改，可以包括：若SMF网元根据第一事件和5GLAN1的指示信息，确定不允许终端在5GLAN1路由数据，SMF网元指示UPF网元删除第一路由规则，其中，第一路由规则包括终端的地址或者终端的VID，用于关联会话与5GLAN1。
可选的，在上述情况中，若终端的会话仅允许接入5GLAN1，SMF网元还需要去激活或者直接释放该终端的会话，相关描述可参考图6所示的实施例中的步骤S614，在此不再赘述。
可选的，本申请实施例中，若第一事件为终端移入5GLAN1的服务区域，则SMF网元根据第一事件和5GLAN1的指示信息，可以确定允许在5GLAN1路由数据；或者，本申请实施例中，若第一事件为终端移出5GLAN1的服务区域，则SMF网元根据第一事件和5GLAN1的指示信息，可以确定不允许在5GLAN1路由数据。
可选的，本申请实施例中，SMF网元指示UPF网元设置第一路由规则，或者SMF网元指示UPF网元删除第一路由规则的相关实现可参考图6所示的实施例中的步骤S614，在此不再赘述。
可选的，本申请实施例中，SMF网元可以根据5GLAN1的指示信息，以及存储的5GLAN1的指示信息和终端的地址的对应关系确定终端的地址；或者，SMF网元可以根据5GLAN1的指示信息，以及存储的5GLAN1的指示信息和终端的VID的对应关系确定终端的VID。
基于上述本地局域网通信方法，可以在终端的一个会话连接到多个5GLAN服务的情况下，使得可以基于该终端位置限制终端在一个或多个5GLAN内的通信。相关技术效果分析可参考图1所示的通信系统部分，在此不再赘述。
其中，上述步骤S701至S711中的AMF网元或者SMF网元的动作可以由图5所示的通信设备500中的处理器501调用存储器503中存储的应用程序代码来执行，本实施例对此不作任何限制。
可选的，以图2所示的通信系统应用于如图3所示的5G网络为例，则如图8所示，为本申请实施例提供的一种本地局域网通信方法，该本地局域网通信方法可选的包括如下步骤S801：
S801、同图7所示的实施例中的步骤S701，相关描述可参考图7所示的实施例，在此不再赘述。
S802、终端向AMF网元发送NAS消息。
相应的，终端接收来自AMF网元的NAS消息。
其中，本申请实施例中，该NAS消息包括会话建立请求消息、PDU会话标识(session ID)和终端的会话对应的DNN。其中，本申请实施例以假设终端的会话对应的DNN为DNN1为例进行后续说明，在此统一说明。
S803、AMF网元向SMF网元发送N11消息。
相应的，SMF网元接收来自AMF网元的N11消息。
其中，本申请实施例中，该N11消息包括上述的会话建立请求消息、PDU会话标识和DNN。此外，该N11消息还可以包括终端的标识。其中，终端的标识的相关描述可参考图6所示的实施例中的步骤S604，在此不再赘述。
S804、SMF网元向LAN控制器发送5GLAN信息认证或获取请求消息。
相应的，LAN控制器接收来自SMF网元的5GLAN信息认证或获取请求消息。
其中，本申请实施例中，该5GLAN信息认证或获取请求消息可以包括DNN1和终端的标识。
S805、LAN控制器确定与DNN1关联的5GLAN ID，并分配与5GLAN ID对应的终端的地址或者终端的VID；或者，LAN控制器确定与DNN1关联的PRA ID，并分配与PRA ID对应的终端的地址或者终端的VID。
可选的，本申请实施例中，若不执行上述步骤S801，则此时若LAN控制器确定与DNN1关联的5GLAN ID，则若该5GLAN ID对应的5GLAN有服务区域限制，LAN控制器还需要确定与该5GLAN ID对应的服务区域信息；或者，此时若LAN控制器确定与DNN1关联的PRA ID，则若该PRA ID对应的5GLAN有服务区域限制，LAN控制器还需要确定与PRA ID对应的服务区域信息。
可选的，本申请实施例中，与DNN1关联的5GLAN ID可以是一个或多个；或者，与DNN1关联的PRA ID可以是一个或多个，本申请实施例对此不作具体限定。
其中，若5GLAN ID或者PRA ID为多个，则对应的服务区域信息为一个或多个。示例性的，DNN、5GLAN ID和服务区域信息的对应关系可以如上述表三或表四所示。
或者，其中，若5GLAN ID为多个，则对应的终端的地址可以为一个或多个。示例性的，5GLAN ID和终端的地址的对应关系可以如上述表七或表九所示。
或者，其中，若PRA ID为多个，则对应的终端的地址可以为一个或多个。示例性的，PRA ID和终端的地址的对应关系可以如上述表八或表九所示。
或者，其中，若5GLAN ID为多个，则对应的终端的VID可以为一个或多个。示例性的，5GLAN ID和终端的VID的对应关系可以如上述表十或表十二所示。
或者，其中，若PRA ID为多个，则对应的终端的VID可以为一个或多个。示例性的，PRA ID和终端的VID的对应关系可以如上述表十一或表十二所示。
S806、LAN控制器向SMF网元发送5GLAN信息认证或获取响应消息。
相应的，SMF网元接收来自LAN控制器的5GLAN信息认证或获取响应消息。
可选的，若步骤S805中LAN控制器确定与DNN1关联的5GLAN ID，并分配与5GLAN ID对应的终端的地址，则相应的，该5GLAN信息认证或获取响应消息包括5GLAN ID以及对应的终端的地址。
或者，可选的，若步骤S805中LAN控制器确定与DNN1关联的5GLAN ID，并分配与5GLAN ID对应的终端的VID，则相应的，该5GLAN信息认证或获取响应消息包括5GLAN ID以及对应的终端的VID。
或者，可选的，若步骤S805中LAN控制器确定与DNN1关联的PRA ID，并分配与PRA ID对应的终端的地址，则相应的，该5GLAN信息认证或获取响应消息包括PRA ID以及对应的终端的地址。
或者，可选的，若步骤S805中LAN控制器确定与DNN1关联的PRA ID，并分配与PRA ID对应的终端的VID，则相应的，该5GLAN信息认证或获取响应消息包括PRA ID以及对应的终端的VID。
可选的，本申请实施例中，若步骤S805中LAN控制器还确定与5GLAN ID或RPA ID对应的服务区域信息，则该5GLAN信息认证或获取响应消息还包括与5GLAN ID或RPA ID对应的服务区域信息。
基于上述步骤S804-S806，SMF网元可以获取与5GLAN ID或RPA ID对应的终端的地址， 或者SMF网元可以获取与5GLAN ID或RPA ID对应的终端的VID。可选的，SMF网元可以获取与5GLAN ID或RPA ID对应的服务区域信息。
可选的，本申请实施例中，若执行上述步骤S801，则本申请实施例提供的本地局域网通信方法中，在执行完上述步骤S803之后，也可以执行上述步骤S804，进而，LAN控制器可以确定5GLAN信息认证或获取请求消息中的DNN1关联的5GLAN ID对应的5GLAN是否有服务区域限制，进而可以执行与上述步骤S806类似的步骤，区别比如在于将上述步骤S806中的对应的服务区域信息替换为对应的服务区域限制指示信息，相关描述可参考上述步骤S806，在此不再赘述。
可选的，本申请实施例中，也可以由SMF网元按照上述图5或图6所示的实施例中的方式确定与5GLAN ID或RPA ID对应的终端的地址，或者，确定与5GLAN ID或RPA ID对应的终端的VID；或者，图5或图6所示的实施例中，也可以按照本申请实施例上述步骤S804-S806中获取与5GLAN ID或RPA ID对应的终端的地址的方式获取与5GLAN ID或RPA ID对应的终端的地址；或者，图5或图6所示的实施例中，也可以按照本申请实施例上述步骤S804-S806中获取与5GLAN ID或RPA ID对应的终端的VID的方式获取与5GLAN ID或RPA ID对应的终端的VID，本申请实施例对此不作具体限定。
S807、与图7所示的实施例中的步骤S708类似，区别比如在于，在步骤S807中，订阅请求消息中包括的5GLAN ID或PRA ID为有服务区域限制的5GLAN对应的5GLAN ID。比如，在步骤S806中的5GLAN信息认证或获取响应消息中包括服务区域信息的情况下，步骤S807中的订阅请求消息中包括的5GLAN ID可以为该服务区域信息对应的5GLAN ID；或者，比如，在步骤S806中的5GLAN信息认证或获取响应消息中不包括服务区域信息，而是执行上述步骤S801的情况下，步骤S807中的订阅请求消息中包括的5GLAN ID可以为根据步骤S806中的5GLAN信息认证或获取响应消息中的服务区域限制指示信息确定的5GLAN ID。其余相关描述可参考图7所示的实施例中的步骤S708，在此不再赘述。
S808-S810、同图7所示的实施例中的步骤S709-S711，相关描述可参考图7所示的实施例，在此不再赘述。
基于上述本地局域网通信方法，可以在终端的一个会话连接到多个5GLAN服务的情况下，使得可以基于该终端位置限制终端在一个或多个5GLAN内的通信。相关技术效果分析可参考图1所示的通信系统部分，在此不再赘述。
其中，上述步骤S801至S810中的AMF网元或者SMF网元的动作可以由图5所示的通信设备500中的处理器501调用存储器503中存储的应用程序代码来执行，本实施例对此不作任何限制。
上述主要从各个网元之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是，上述策略控制网元或会话管理网元为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对策略控制网元或会话管理网元进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一 个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
比如，以采用集成的方式划分各个功能模块的情况下，图9示出了一种策略控制网元90的结构示意图。该策略控制网元90包括：收发模块902和处理模块901。收发模块902，用于接收来自会话管理网元的第一事件报告，第一事件报告包括第一事件以及第一本地局域网的指示信息，第一事件包括终端移入或移出第一本地局域网的服务区域。处理模块901，用于根据第一事件和指示信息，更新终端对应的第一PCC规则。收发模块902，还用于向会话管理网元发送更新后的第一PCC规则。
可选的，收发模块902，还用于向会话管理网元发送第一订阅请求消息，第一订阅请求消息携带第一本地局域网的指示信息，用于请求订阅与第一本地局域网相关的终端的移动性事件。
可选的，处理模块901用于根据第一事件和指示信息，更新终端对应的第一PCC规则，包括：用于根据指示信息，确定终端的地址；根据第一事件和终端的地址，更新终端对应的第一PCC规则。
可选的，处理模块901用于根据第一事件和指示信息，更新终端对应的第一PCC规则，包括：用于根据第一本地局域网的指示信息，确定终端的虚拟局域网标识；根据第一事件和终端的虚拟局域网标识，更新终端对应的第一PCC规则。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，该策略控制网元90以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该策略控制网元90可以采用图5所示的形式。
比如，图5中的处理器501可以通过调用存储器503中存储的计算机执行指令，使得策略控制网元90执行上述方法实施例中的本地局域网通信方法。
具体的，图9中的收发模块902和处理模块901的功能/实现过程可以通过图5中的处理器501调用存储器503中存储的计算机执行指令来实现。或者，图9中的处理模块901的功能/实现过程可以通过图5中的处理器501调用存储器503中存储的计算机执行指令来实现，图9中的收发模块902的功能/实现过程可以通过图5中的通信接口504来实现。
由于本实施例提供的策略控制网元90可执行上述的本地局域网通信，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
可选的，本申请实施例还提供了一种装置(例如，该装置可以是芯片系统)，该装置包括处理器，用于支持策略控制网元实现上述本地局域网通信，例如根据所述第一事件和所述指示信息，更新所述终端对应的第一PCC规则。在一种可能的设计中，该装置还包括存储器。该存储器，用于保存策略控制网元必要的程序指令和数据。当然，存储器也可以不在该装置中。该装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件，本申请实施例对此不作具体限定。
比如，以采用集成的方式划分各个功能模块的情况下，图10示出了一种会话管理网元100的结构示意图。该会话管理网元100包括处理模块1001和收发模块1002。
一种可能的实现方式中：
收发模块1002，用于向策略控制网元发送第一事件报告，第一事件报告包括第一事件以及第一本地局域网的指示信息，第一事件包括终端移入或移出第一本地局域网的服务范围；收发模块1002，还用于接收来自策略控制网元的终端对应的更新后的第一PCC规则；处理模块1001，用于根据更新后的第一PCC规则，对终端的会话进行修改。
可选的，收发模块1002，还用于接收来自策略控制网元的第一订阅请求消息，第一订阅请求消息携带第一本地局域网的指示信息，用于请求订阅与第一本地局域网相关的终端的移动性事件。
可选的，处理模块1001用于根据更新后的第一PCC规则，对终端的会话进行修改，包括：若更新后的第一PCC规则指示允许终端在第一本地局域网路由数据，指示用户面功能网元设置第一路由规则，其中，第一路由规则包括终端的地址或者终端的虚拟局域网标识。
可选的，处理模块1001，还用于若终端的会话已经去激活，激活终端的会话的用户面连接。
可选的，处理模块1001用于根据更新后的第一PCC规则，对终端的会话进行修改，包括：若更新后的第一PCC规则指示不允许终端在第一本地局域网路由数据，指示用户面功能网元删除第一路由规则，其中，第一路由规则包括终端的地址或者终端的虚拟局域网标识。
可选的，处理模块1001，还用于若终端的会话仅允许接入第一本地局域网，去激活终端的会话的用户面连接或者直接释放终端的会话。
另一种可能的实现方式中：
收发模块1002，用于接收来自移动管理网元的第一事件报告，该第一事件报告包括第一事件以及第一本地局域网的指示信息，该第一事件包括终端移入或移出该第一本地局域网的服务范围；处理模块1001，用于根据第一事件以及第一本地局域网的指示信息，对该终端的会话进行修改。
可选的，收发模块1002，还用于向该移动管理网元发送第一订阅请求消息，该第一订阅请求消息携带该第一本地局域网的指示信息，用于请求订阅与该第一本地局域网相关的该终端的移动性事件。
可选的，处理模块1001用于根据第一事件以及第一本地局域网的指示信息，对该终端的会话进行修改，包括：若根据第一事件和第一本地局域网的指示信息，确定允许该终端在该第一本地局域网路由数据，指示用户面功能网元设置第一路由规则，其中，该第一路由规则包括该终端的地址或者该终端的虚拟局域网标识。
可选的，处理模块1001，还用于若该终端的会话已经去激活，激活该终端的会话的用户面连接。
可选的，处理模块1001用于根据第一事件以及第一本地局域网的指示信息，对该终端的会话进行修改，包括：若根据第一事件和第一本地局域网的指示信息，确定不允许该终端在该第一本地局域网路由数据，指示用户面功能网元删除第一路由规则，其中，该第一路由规则包括该终端的地址或者该终端的虚拟局域网标识。
可选的，处理模块1001，还用于若该终端的会话仅允许接入该第一本地局域网，去激活该终端的会话的用户面连接或者直接释放该终端的会话。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，该会话管理网元100以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该会话管理网元100可以采用图5所示的形式。
比如，图5中的处理器501可以通过调用存储器503中存储的计算机执行指令，使得会话管理网元100执行上述方法实施例中的本地局域网通信方法。
具体的，图10中的收发模块1002和处理模块1001的功能/实现过程可以通过图5中的处理器501调用存储器503中存储的计算机执行指令来实现。或者，图10中的处理模块1001的功能/实现过程可以通过图5中的处理器501调用存储器503中存储的计算机执行指令来实现，图10中的收发模块1002的功能/实现过程可以通过图5中的通信接口504来实现。
由于本实施例提供的会话管理网元100可执行上述的本地局域网通信，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
可选的，本申请实施例还提供了一种装置(例如，该装置可以是芯片系统)，该装置包括处理器，用于支持会话管理网元实现上述本地局域网通信，例如根据所述第一事件和所述指示信息，更新所述终端对应的第一PCC规则。在一种可能的设计中，该装置还包括存储器。该存储器，用于保存会话管理网元必要的程序指令和数据。当然，存储器也可以不在该装置中。该装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件，本申请实施例对此不作具体限定。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式来实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或者数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可以用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)，光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
尽管在此结合各实施例对本申请进行了描述，然而，在实施所要求保护的本申请过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (22)

  1. 一种本地局域网通信方法，其特征在于，所述方法包括：
    策略控制网元接收来自会话管理网元的第一事件报告，所述第一事件报告包括第一事件以及第一本地局域网的指示信息，所述第一事件包括终端移入或移出所述第一本地局域网的服务区域；
    所述策略控制网元根据所述第一事件和所述指示信息，更新所述终端对应的第一策略与计费控制PCC规则；
    所述策略控制网元向所述会话管理网元发送更新后的所述第一PCC规则。
  2. 根据权利要求1所述的方法，其特征在于，在所述策略控制网元接收来自会话管理网元的第一事件报告之前，所述方法还包括：
    所述策略控制网元向所述会话管理网元发送第一订阅请求消息，所述第一订阅请求消息携带所述第一本地局域网的指示信息，用于请求订阅与所述第一本地局域网相关的所述终端的移动性事件。
  3. 根据权利要求2所述的方法，其特征在于，所述第一订阅请求消息还携带所述第一本地局域网的服务区域信息。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述策略控制网元根据所述第一事件和所述指示信息，更新所述终端对应的第一PCC规则，包括：
    所述策略控制网元根据所述指示信息，确定所述终端的地址；
    所述策略控制网元根据所述第一事件和所述终端的地址，更新所述终端对应的第一PCC规则。
  5. 根据权利要求1-3任一项所述的方法，其特征在于，所述策略控制网元根据所述第一事件和所述指示信息，更新所述终端对应的第一PCC规则，包括：
    所述策略控制网元根据所述第一本地局域网的指示信息，确定所述终端的虚拟局域网标识；
    所述策略控制网元根据所述第一事件和所述终端的虚拟局域网标识，更新所述终端对应的第一PCC规则。
  6. 一种本地局域网通信方法，其特征在于，所述方法包括：
    会话管理网元向策略控制网元发送第一事件报告，所述第一事件报告包括第一事件以及第一本地局域网的指示信息，所述第一事件包括终端移入或移出所述第一本地局域网的服务范围；
    所述会话管理网元接收来自所述策略控制网元的所述终端对应的更新后的第一策略与计费控制PCC规则；
    所述会话管理网元根据所述更新后的第一PCC规则，对所述终端的会话进行修改。
  7. 根据权利要求6所述的方法，其特征在于，在所述会话管理网元向所述策略控制网元发送所述第一事件报告之前，所述方法还包括：
    所述会话管理网元接收来自所述策略控制网元的第一订阅请求消息，所述第一订阅请求消息携带所述第一本地局域网的指示信息，用于请求订阅与所述第一本地局域网相关的所述终端的移动性事件。
  8. 根据权利要求7所述的方法，其特征在于，所述第一订阅请求消息还携带所述第一本地局域网的服务区域信息。
  9. 根据权利要求6-8任一项所述的方法，其特征在于，所述会话管理网元根据所述更新后的第一PCC规则，对所述终端的会话进行修改，包括：
    若所述更新后的第一PCC规则指示允许所述终端在所述第一本地局域网路由数据，所述会话管理网元指示用户面功能网元设置第一路由规则，其中，所述第一路由规则包括所述终端的地址或者所述终端的虚拟局域网标识。
  10. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    若所述终端的会话已经去激活，所述会话管理网元激活所述终端的会话的用户面连接。
  11. 根据权利要求6-8任一项所述的方法，其特征在于，所述会话管理网元根据所述更新后的第一PCC规则，对所述终端的会话进行修改，包括：
    若所述更新后的第一PCC规则指示不允许所述终端在所述第一本地局域网路由数据，所述会话管理网元指示用户面功能网元删除第一路由规则，其中，所述第一路由规则包括所述终端的地址或者所述终端的虚拟局域网标识。
  12. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    若所述终端的会话仅允许接入所述第一本地局域网，所述会话管理网元去激活所述终端的会话的用户面连接或者直接释放所述终端的会话。
  13. 一种策略控制网元，其特征在于，所述策略控制网元包括：收发模块和处理模块；
    所述收发模块，用于接收来自会话管理网元的第一事件报告，所述第一事件报告包括第一事件以及第一本地局域网的指示信息，所述第一事件包括终端移入或移出所述第一本地局域网的服务区域；
    所述处理模块，用于根据所述第一事件和所述指示信息，更新所述终端对应的第一策略与计费控制PCC规则；
    所述收发模块，还用于向所述会话管理网元发送更新后的所述第一PCC规则。
  14. 根据权利要求13所述的策略控制网元，其特征在于，
    所述收发模块，还用于向所述会话管理网元发送第一订阅请求消息，所述第一订阅请求消息携带所述第一本地局域网的指示信息，用于请求订阅与所述第一本地局域网相关的所述终端的移动性事件。
  15. 根据权利要求13或14所述的策略控制网元，其特征在于，所述处理模块用于根据所述第一事件和所述指示信息，更新所述终端对应的第一PCC规则，包括：
    用于根据所述指示信息，确定所述终端的地址；根据所述第一事件和所述终端的地址，更新所述终端对应的第一PCC规则。
  16. 根据权利要求13或14所述的策略控制网元，其特征在于，所述处理模块用于根据所述第一事件和所述指示信息，更新所述终端对应的第一PCC规则，包括：
    用于根据所述第一本地局域网的指示信息，确定所述终端的虚拟局域网标识；根据所述第一事件和所述终端的虚拟局域网标识，更新所述终端对应的第一PCC规则。
  17. 一种会话管理网元，其特征在于，所述会话管理网元包括：处理模块和收发模块；
    所述收发模块，用于向策略控制网元发送第一事件报告，所述第一事件报告包括第一事件以及第一本地局域网的指示信息，所述第一事件包括终端移入或移出所述第一本地局域网的服务范围；
    所述收发模块，还用于接收来自所述策略控制网元的所述终端对应的更新后的第一策略与计费控制PCC规则；
    所述处理模块，用于根据所述更新后的第一PCC规则，对所述终端的会话进行修改。
  18. 根据权利要求17所述的会话管理网元，其特征在于，所述收发模块，还用于接收来自所述策略控制网元的第一订阅请求消息，所述第一订阅请求消息携带所述第一本地局域网的指示信息，用于请求订阅与所述第一本地局域网相关的所述终端的移动性事件。
  19. 根据权利要求17或18所述的会话管理网元，其特征在于，所述处理模块用于根据所述更新后的第一PCC规则，对所述终端的会话进行修改，包括：
    若所述更新后的第一PCC规则指示允许所述终端在所述第一本地局域网路由数据，指示用户面功能网元设置第一路由规则，其中，所述第一路由规则包括所述终端的地址或者所述终端的虚拟局域网标识。
  20. 根据权利要求19所述的会话管理网元，其特征在于，所述处理模块，还用于若所述终端的会话已经去激活，激活所述终端的会话的用户面连接。
  21. 根据权利要求17或18所述的会话管理网元，其特征在于，所述处理模块用于根据所述更新后的第一PCC规则，对所述终端的会话进行修改，包括：
    若所述更新后的第一PCC规则指示不允许所述终端在所述第一本地局域网路由数据，指示用户面功能网元删除第一路由规则，其中，所述第一路由规则包括所述终端的地址或者所述终端的虚拟局域网标识。
  22. 根据权利要求21所述的会话管理网元，其特征在于，所述处理模块，还用于若所述终端的会话仅允许接入所述第一本地局域网，去激活所述终端的会话的用户面连接或者直接释放所述终端的会话。
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