WO2020192727A1 - 一种确定服务区域的方法、装置及系统 - Google Patents

一种确定服务区域的方法、装置及系统 Download PDF

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Publication number
WO2020192727A1
WO2020192727A1 PCT/CN2020/081365 CN2020081365W WO2020192727A1 WO 2020192727 A1 WO2020192727 A1 WO 2020192727A1 CN 2020081365 W CN2020081365 W CN 2020081365W WO 2020192727 A1 WO2020192727 A1 WO 2020192727A1
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Prior art keywords
network element
service area
user plane
information
network
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PCT/CN2020/081365
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English (en)
French (fr)
Inventor
宗在峰
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华为技术有限公司
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Publication of WO2020192727A1 publication Critical patent/WO2020192727A1/zh

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    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0876—Aspects of the degree of configuration automation
    • H04L41/0886—Fully automatic configuration
    • 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

Definitions

  • This application relates to the field of communications technology, and in particular to a method, device and system for determining a service area.
  • the service area of a base station is one or more tracking areas, one or more cells, etc., covered by the base station.
  • the service area of a user plane function (UPF) network element is defined as the sum of the service area of the base station interfaced with it.
  • the service area of a session management function (session management function, SMF) network element is defined as the sum of the service areas of the UPF network element controlled by the SMF network element.
  • the configuration file of the SMF network element in the network repository function (NRF) network element includes the service area of the SMF network element.
  • the service area of a UPF network element can only be obtained by manual configuration.
  • the service area of an SMF network element can only be obtained by manual configuration, and the manual configuration process is complicated, which brings work. large.
  • this application provides a method, device and system for determining the service area.
  • this application provides a method for determining a service area.
  • the method includes: a network storage network element obtains interface information of a first base station and service area information of the first base station, wherein the service area of the first base station
  • the interface information is information about the interface between the first base station and one or more user plane network elements.
  • the one or more user plane network elements include a first user plane network element; the network storage network element receives information from all The target network information of the first user plane network element, wherein the target network information is information about a route reachable with the first user plane network element; the network storage network element is based on the first base station The service area of the first user plane network element is obtained through the interface information of and the target network information, where the service area of the first user plane network element includes the service area of the first base station.
  • the network storage network element learns that the service area of the first base station is a part of the service area of the first user plane network element according to the interface information of the first base station and the target network information.
  • This operation is performed on one or more base stations that interface with the first user plane network element, so that the service area of the first user plane network element can be determined.
  • This method realizes the automatic configuration of the service area, avoids the complicated manual configuration process, and reduces the workload of network configuration.
  • the network storage network element learns the service area of the first user plane network element according to the interface information of the first base station and the target network information including: the network storage network The element determines that the route between the first base station and the first user plane network element is reachable according to the interface information and the target network information; the network storage network element determines the service area of the first base station Join the service area of the first user plane network element.
  • the network storage network element learns the service area of the first user plane network element according to the interface information of the first base station and the target network information including: the network storage network The element determines that the route between the first base station and the first user plane network element is reachable according to the interface information and the target network information; the network storage network element determines the service area of the first base station The information is sent to the first user plane network element; the network storage network element receives service area information of the first user plane network element from the first user plane network element. In this way, the network storage network element determines that the route between the first base station and the first user plane network element is reachable, so that the service area information of the first base station is sent to the first user plane network element to match the first user plane network element.
  • One or more base stations of the interface perform this operation, so that the first user plane network element can determine the service area of the first user plane network element, and provide the service area information of the first user plane network element to the network storage network element to Update the configuration file of the first user plane network element stored in the network storage network element.
  • the network storage network element determines that there is an interface between the first base station and the first user plane network element according to the interface information and the target network information; or determines that all The first base station is subscribed by the first user plane network element, or it is determined that the first base station is queried by the first user plane network element.
  • the network storage network element learns the service area of the session management network element, wherein the session management network element is a network element that controls the first user plane network element, and the session management The service area of the network element includes the service area of the first user plane network element.
  • the network storage network element learns the service area of the session management network element includes: the network storage network element adds the service area of the first user plane network element to the session management The service area of the network element. In this way, the network storage network element performs this operation on one or more user plane network elements controlled by the session management network element, so that the service area of the first user plane network element can be determined.
  • the network storage network element learns the service area of the session management network element includes: the network storage network element sends the service area information of the first user plane network element to the session Management network element; the network storage network element receives service area information of the session management network element from the session management network element.
  • the network storage network element sends the service area information of the first user plane network element to the session management network element, and performs this operation on one or more base stations controlled by the session management network element, so that the session management network element can determine the session management network And provide the service area information of the session management network element to the network storage network element to update the configuration file saved by the session management network element in the network storage network element.
  • the network storage network element receives first service area identification information from the first user plane network element, and the first service area identification information is used to indicate the first user plane The service area corresponding to the network element; the network storage network element receives second service area identification information from the session management network element, where the second service area identification information is used to indicate the service area corresponding to the session management network element If it is determined that the second service area identification information includes the first service area identification information, the network storage network element determines that the first user plane network element is controlled by the session management network element; or if it is determined If the second service area identification information includes the first service area identification information, the network storage network element determines that the first user plane network element is subscribed by the session management network element. In this way, the network storage network element determines that the first user plane network element is subscribed to or controlled by the session management network element, and further determines or causes the session management network element to determine the service area of the session management network element.
  • the network storage network element acquiring the interface information of the first base station and the service area information of the first base station includes: the network storage network element acquiring the first information from the first base station The interface information of the base station and the service area information of the first base station; or the network storage network element acquires the interface information of the first base station and the service area information of the first base station from a mobility management network element.
  • the interface information of the first base station includes an Internet Protocol IP address of an interface between the first base station and the first user plane network element.
  • the service area information of the first base station includes a tracking area identifier and/or a cell identifier of the first base station.
  • the target network information includes reachable destination address information
  • the reachable destination address information includes any one or more of the following: a reachable route to the network storage network element One or more Internet Protocol IP addresses; one or more address segments reachable to the network storage network element; one or more IP addresses reachable to the network storage network element are masked code.
  • the present application provides a method for determining a service area.
  • the method includes: a first user plane network element sends target network information to a network storage network element, wherein the target network information is the first user plane network element.
  • Information about the reachable route of the network element is used to determine one or more base stations with reachable routes to the first user plane network element; the first user plane network element receives information from the network storage network element The service area information of the one or more base stations; the first user plane network element determines the service area of the first user plane network element according to the service area information of the one or more base stations.
  • the first user plane network element provides the target network information to the network storage network element, so that the network storage network element determines one or more base stations that are routable to the first user plane network element, and compares this one
  • the service area information of or multiple base stations is provided to the first user plane network element.
  • the first user plane determines the service area information of the first user plane network element according to the service area information of the one or more base stations.
  • the first user plane network element determining the service area of the first user plane network element includes: the first user plane network element determining the service area of the one or more base stations Join the service area of the first user plane network element.
  • the first user plane network element sends the service area information of the first user plane network element to the network storage network element.
  • the first user plane network element sends the service area information of the first user plane network element to the session management network element, wherein the session management network element controls the second A network element of a user plane network element.
  • this application provides a method for determining a service area.
  • the method includes: a session management network element obtains service area information of one or more user plane network elements, and the one or more user plane network elements are all The network element controlled by the session management network element; the session management network element determines the service area of the session management network element according to the service area information of the one or more user plane network elements.
  • the session management network element obtains the service area information of one or more user plane network elements it controls, thereby determining the service area information of the session management network element.
  • This method realizes the automatic configuration of the service area, avoids the complicated manual configuration process, and reduces the workload of network configuration.
  • the session management network element determining the service area of the session management network element includes: the session management network element adds the service area of the one or more user planes to the session The service area of the management network element.
  • the session management network element sends the service area information of the session management network element to the network storage network element.
  • the session management network element acquiring service area information of the one or more user plane network elements includes: the session management network element acquiring information from the one or more user plane network elements The service area information of the one or more user plane network elements; or the session management network element obtains the service area information of the one or more user plane network elements from a network storage network element.
  • this application provides a network storage network element that has the function of implementing the method described in the first aspect.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware and software include one or more modules corresponding to the above functions.
  • the structure of the network storage network element includes a processor and a transceiver, and the processor is configured to support the network storage network element to perform the method described in the first aspect above, and the transceiver
  • the device is used to support the communication between the network storage network element and other devices.
  • the network storage network element may further include a memory, which is configured to be coupled with the processor and stores necessary program instructions and data of the network storage network element.
  • this application provides a user plane network element, which has a function of implementing the method described in the second aspect.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware and software include one or more modules corresponding to the above functions.
  • the structure of the user plane network element includes a processor and a transceiver, and the processor is configured to support the user plane network element to perform the method described in the above second aspect, the transceiver
  • the device is used to support the communication between the user plane network element and other devices.
  • the user plane network element may further include a memory, which is configured to be coupled with the processor and stores necessary program instructions and data for the user plane network element.
  • this application provides a session management network element, which has the function of implementing the method in the third aspect.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware and software include one or more modules corresponding to the above functions.
  • the structure of the session management network element includes a processor and a transceiver, and the processor is configured to support the session management network element to perform the method described in the third aspect, the transceiver
  • the device is used to support the communication between the session management network element and other devices.
  • the session management network element may further include a memory, which is used for coupling with the processor, and stores the necessary program instructions and data of the session management network element.
  • the present application provides a device (for example, the device may be a chip system).
  • the device includes a processor and can execute any one or more of the methods described in the first to third aspects.
  • the device also includes a memory for storing necessary program instructions and data.
  • this application provides a computer program product, which when running on a computer, enables the computer to execute any one or more of the methods described in the first to third aspects.
  • the present application provides a computer-readable storage medium that stores instructions in the computer-readable storage medium.
  • the computer-readable storage medium runs on a computer, the computer can execute the above-mentioned first to third aspects. Any one or more of the methods mentioned.
  • the present application provides a communication system that includes the network storage network element involved in the first aspect, the user plane network element involved in the second aspect, or the session management network element involved in the third aspect. Any number of.
  • the system further includes a network storage network element involved in the first aspect, or a user plane network element involved in the second aspect, or a session management network element involved in the third aspect.
  • Other equipment such as base stations, etc.
  • FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of this application.
  • FIG. 2 is a schematic diagram of a user plane network element interfaced with a base station through a routing protocol according to an embodiment of the application;
  • FIG. 3 is a flowchart of a method for determining a service area provided by an embodiment of the application
  • FIG. 4 is a flowchart of another method for determining a service area provided by an embodiment of this application.
  • FIG. 5 is a flowchart of another method for determining a service area provided by an embodiment of this application.
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 6a is a schematic structural diagram of a network storage network element provided by an embodiment of this application.
  • FIG. 6b is a schematic structural diagram of a user plane network element provided by an embodiment of this application.
  • FIG. 6c is a schematic structural diagram of a session management network element provided by an embodiment of this application.
  • FIG. 7 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • “One or more” or similar expressions refer to any combination of these items, including any combination of single item (a) or plural items (a), for example, one or more of a, b and c, which can be Means: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.
  • words such as “first” and “second” are used to distinguish functions and effects. Those skilled in the art can understand that words such as “first” and “second” do not limit the quantity and order of execution, and words such as “first” and “second” do not limit the difference.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE Time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • the terminal equipment in the embodiments of this application may refer to user equipment, access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), and a wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G system, or future evolution of the public land mobile network (PLMN) Terminal equipment, etc., this embodiment of the present application does not limit this.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • PLMN public land mobile network
  • Figure 1 is a network architecture to which the embodiments of this application are applicable. As shown in Figure 1, the network architecture is a network architecture described from the perspective of a service-oriented interface, and each network element involved in the network architecture is described separately.
  • (Radio Access Network, (R)AN) network element used to provide network access functions for authorized users in a specific area, and can use transmission tunnels of different quality according to the user's level, business needs, etc. .
  • (R)AN network element can manage wireless resources, provide access services for terminal equipment, and then complete the forwarding of control signals and user data between terminal equipment and the core network.
  • (R)AN network element can also be understood as a traditional network Base station. For example, it can be a base transceiver station (BTS) in the GSM system or CDMA, a base station (NodeB, NB) in a WCDMA system, or an evolved node B, eNB, or LTE system in the LTE system.
  • BTS base transceiver station
  • NodeB, NB base station
  • eNB evolved node B
  • LTE Long Term Evolution
  • eNodeB it can also be a 5G base station (generation Node B, gNB) or can be a relay station, access point, in-vehicle equipment, wearable equipment, and network side equipment in the future 5G communication system or network equipment in the future evolved PLMN network Wait.
  • gNB generation Node B
  • User plane network element used for packet routing and forwarding, and quality of service (QoS) processing of user plane data, etc.
  • the user plane network element may be a UPF network element.
  • the user plane network element may still be a UPF network element, or may also have other names, which is not limited in this application.
  • Data network network element used to provide a network for data transmission.
  • the data network element may be a data network (DN) network element.
  • the data network network element may still be a DN network element, or may also have other names, which is not limited in this application.
  • Authentication service network element used to implement authentication and authentication of users.
  • the authentication service network element may be an authentication server function (authentication server function, AUSF) network element.
  • the authentication service network element may still be an AUSF network element, or may also have other names, which is not limited in this application.
  • Mobility management network elements mainly used for mobility management and access management.
  • the mobility management network element may be a mobility management entity (mobility management entity, MME).
  • the mobility management network element may be an access management function (Access and Mobility Management Function, AMF) network element.
  • AMF Access and Mobility Management Function
  • the mobility management network element may still be an AMF network element, or may also have other names, which are not limited in this application.
  • Session management network element Mainly used for session management, terminal equipment Internet Protocol (IP) address allocation and management, selection of end points that can manage user plane functions, policy control and charging function interfaces, and downlink data Notification etc.
  • IP Internet Protocol
  • the session management network element may be an SMF network element.
  • the session management network element may still be an SMF network element, or may also have other names, which is not limited in this application.
  • Network opening network elements used to safely open the services and capabilities provided by the 3GPP network function network elements to the outside.
  • the network open network element may be a service capability exposure function (SCEF) network element.
  • SCEF service capability exposure function
  • NEF Network Exposure Function
  • the network open network element may still be a NEF network element, or may have other names, which is not limited by this application.
  • Network storage network element used to store the information of the network functions deployed in the core network, and provide the discovery of network functions and services.
  • the network storage network element can be a network storage function (network repository function, NRF) network element.
  • NRF network repository function
  • the network storage network element can still be an NRF network element, and it can also have other names. The application is not limited.
  • Policy control network element a unified policy framework used to guide network behavior, and provide policy rule information for control plane function network elements (such as AMF, SMF network elements, etc.).
  • the policy control network element may be a policy control function (Policy Control Function, PCF) network element.
  • Policy Control Function Policy Control Function
  • the policy control network element may still be a PCF network element, or may also have other names, which is not limited in this application.
  • Data management network element used to process user identification, access authentication, registration, and mobility management.
  • the data management network element may be a home subscriber server (home subscriber server, HSS).
  • the data management network element may be a unified data management (Unified Data Management, UDM) network element.
  • UDM Unified Data Management
  • data management may still be UDM network elements, or may also have other names, which are not limited by this application.
  • Application network elements used for data routing affected by applications, access network open function network elements, and interaction with the policy framework for policy control.
  • the application network element may be an application function (AF) network element.
  • AF application function
  • the application network element may still be an AF network element, or may also have other names, which is not limited in this application.
  • network elements or functions may be network elements in hardware devices, software functions running on dedicated hardware, or virtualization functions instantiated on a platform (for example, a cloud platform).
  • Nausf is the service-based interface displayed by AUSF network element 105
  • Namf is the service-based interface displayed by AMF network element 106
  • Nsmf is the service-based interface displayed by SMF network element 107
  • Nnef is NEF network element
  • Nnrf is the service-based interface displayed by NRF network element 109
  • Npcf is the service-based interface displayed by PCF network element 110
  • Nudm is the service-based interface displayed by UDM network element 111
  • Naf is AF The service-based interface presented by the network element 112.
  • N1 is the reference point between UE101 and AMF network element 106
  • N2 is the reference point between (R)AN network element 102 and AMF network element 106, used for non-access stratum (Non-access stratum, NAS) message transmission, etc.
  • N3 is the reference point between (R)AN network element 102 and UPF network element 103, used to transmit user plane data, etc.
  • N4 is the reference point between SMF network element 107 and UPF network element 103, used for transmission
  • the N6 interface is a reference point between the UPF network element 103 and the DN network element 104, and is used to transmit user plane data.
  • network function network element entities such as AMF network element 106, SMF network element 107, PCF network element 110, and UDM network element 111 are all called network function (NF) network elements;
  • NF network function
  • a collection of network elements such as AMF network element 106, SMF network element 107, PCF network element 110, UDM network element 111, etc. may all be called control plane function network elements.
  • NF network elements can be defined as different NFs according to the types of functions, such as: authentication and security functions, packet data session management functions, mobility management functions and access control functions, policy control functions, etc. These functions are composed of corresponding NF components To achieve, each NF component provides services to other NF components or functions through a defined service interface.
  • the UPF network element, SMF network element, AMF network element, NRF network element, and gNB described in the subsequent embodiments are just examples and do not constitute a limitation to the embodiments of the present application. That is, the UPF network elements described later in this application can be replaced with user plane network elements, SMF network elements can be replaced with session management network elements, AMF network elements can be replaced with mobility management network elements, and NRF network elements can be replaced with network storage network elements. , GNB can be replaced with base station or access network equipment. And the UPF network element, SMF network element, AMF network element and NRF network element may be referred to as UPF, SMF, AMF, NRF for short.
  • the routing protocol can be routing information protocol (RIP), border gateway protocol (border gateway protocol, BGP), or open shortest path first (OSPF) protocol. Not limited.
  • RIP routing information protocol
  • Border gateway protocol border gateway protocol
  • OSPF open shortest path first
  • FIG. 2 it is a schematic diagram of the UPF interface with the base station through the OSPF protocol.
  • the IP address of UPF's N3 interface is configured as 198.168.100.2, the router that interfaces with UPF is R1, and the UPF-facing IP address of R1 is configured as 192.168.100.3.
  • the interface between gNB and router R2, the IP address of gNB is in the 192.168.300.0/255.255.255.0 network segment, and the OSPF routing network is between R1 and R2.
  • Figure 2 shows a router R1 directly adjacent to UPF.
  • UPF can be directly adjacent to multiple routers R1.
  • the multiple routers R1 correspond to their respective OSPF routes.
  • Network that is, UPF is indirectly adjacent to multiple OSPF routing networks.
  • Figure 2 shows a router R2 that is directly adjacent to the OSPF routing network.
  • the OSPF routing network can be directly adjacent to multiple routers R2.
  • the multiple routers R2 correspond to their respective gNBs, namely The OSPF routing network is indirectly adjacent to multiple gNBs. This application does not limit the number of routers R1, the number of OSPF routing networks, the number of routers R2, and the number of gNBs.
  • UPF can obtain information from the directly adjacent router R1 and generate a routing table, for example, Table 1:
  • UPF When UPF needs to send a data packet to gNB, UPF searches the routing table according to the address of the gNB to determine the next hop router for the data packet. If the next hop router R1 corresponding to the gNB exists in the routing table, the route to the gNB is reachable. For example, the IP address of the N3 interface of the gNB is 192.168.300.21.
  • UPF looks up the routing table and determines that the next hop of the packet sent to 192.168.300.21 is 192.168.100.3. Therefore, UPF Send the data packet to 192.168.100.3, the R1 router.
  • UPF looks up the routing table and determines that the next hop of the packet sent to 192.168.300.21 is 192.168.100.3, specifically: UPF performs a logical AND operation between 192.168.300.21 and the mask 255.255.255.0 of the destination address in the routing table. The result obtained is 192.168.300.0, so it is determined that the corresponding next hop is 192.168.100.3.
  • the router R1 also has a similar routing table, and finally, the data packet will be sent to the corresponding router R2, and then sent to the gNB through the R2 router.
  • UPF When UPF needs to send a data packet to gNB, UPF searches the routing table according to the address of the gNB to determine the next hop router for the data packet. If the next hop router R1 corresponding to the gNB does not exist in the routing table, the route to the gNB is unreachable. For example, the IP address of the N3 interface of gNB is 192.168.600.5. After 192.168.600.5 is logically ANDed with the mask 255.255.255.0 of the destination address in the routing table, there is no corresponding next hop.
  • UPF can determine a gNB and the UPF according to the routing table Whether there is a reachable route between them can also be said whether there is an N3 interface.
  • the service area of UPF is defined as the sum of the service area of the base station with its interface. Therefore, as long as the service area of the base station with the N3 interface with the UPF is obtained, it can be calculated based on the service area of all the base stations with the interface with the UPF The size of the UPF service area.
  • the service area of the SMF is defined as the sum of the service area of the UPF controlled by the SMF. Therefore, as long as the service area of the UPF controlled by the SMF is obtained, the service area size of the SMF can be calculated according to the service area of all the UPFs controlled by the SMF.
  • FIG. 3 is a method for determining a service area provided by an embodiment of the application, and the method includes the following steps:
  • S301 One or more base stations send their respective N3 interface information and service area information to the NRF, so that the NRF obtains the N3 interface information and service area information of the one or more base stations.
  • the N3 interface information of the first base station is information of the interface between the first base station and one or more user plane network elements.
  • the N3 interface information of the first base station includes information about the N3 interface between the first base station and the first UPF, the first base station and the second UPF Information about the N3 interface between the first base station and the third UPF.
  • the N3 interface information of the first base station may be the IP address of one or more N3 interfaces of the first base station.
  • the IP address of the N3 interface of the first base station may be 192.168.300.21.
  • the N3 interface information of the first base station may further include the first network instance identifier of the N3 interface of the first base station.
  • the first network instance identifier is used to indicate the network to which the N3 interface of the first base station belongs, for example, the network is divided by regions, and the first network instance identifier indicates that the network to which the N3 interface of the first base station belongs is region A.
  • the first network instance identifier can be used to distinguish multiple N3 interfaces (belonging to different base stations) with the same IP address.
  • the N3 interface information of the first base station includes the IP address 192.168.300.21 of the N3 interface of the first base station and the indication A
  • the first network instance identifier of the region, the IP address of the N3 interface of the second base station is 192.168.300.21, and the second network instance identifier indicating the region B.
  • the first base station and the second network instance identifier can be distinguished according to the first network instance identifier and the second network instance identifier.
  • the second base station is
  • the service area information of the first base station is information of the service area of the first base station, such as a tracking area identity (TA identity, TAI) and/or a cell identity (cell ID).
  • the first base station may cover multiple tracking areas and/or multiple cells, and the service area information includes multiple tracking area identities and/or multiple cell identities.
  • This application does not limit how the first base station sends the N3 interface information and service area information of the first base station to the NRF, that is, how NRF obtains the N3 interface information and service area information of the first base station.
  • Two types of NRF are introduced below. A method for obtaining N3 interface information and service area information of the first base station.
  • Method 1 The first base station directly sends the N3 interface information and service area information of the first base station to the NRF, so that the NRF obtains the N3 interface information and service area information of the first base station.
  • this method requires the first base station to support a servicing interface with the NRF. If the first base station supports the service interface, the first base station may include the N3 interface information and service area information of the first base station in the configuration file during the process of registering with the NRF.
  • Method 2 The first base station sends the N3 interface information and service area information of the first base station to the NRF through AMF, so that the NRF obtains the N3 interface information and service area information of the first base station.
  • the first base station may send the N3 interface information and service area information of the first base station to the AMF.
  • the AMF receives the N3 interface information and service area information of the first base station, it sends the above information to the NRF.
  • the AMF sends the N3 interface information and service area information of the first base station to the NRF in the following two ways: Method 1: AMF generates the configuration file of the first base station based on the above information, and combines The configuration file of the base station is registered in the NRF; Method 2: The AMF uses the above information as a part of the configuration file of the AMF, and registers the configuration file of the AMF in the NRF.
  • the target network information is information about a route reachable by the first UPF, including information about a reachable destination address.
  • the reachable destination address information may be any one or more of one or more IP addresses, address segment information gathered by multiple base stations through a routing network, or address plus mask information.
  • the address segment information gathered by multiple base stations through the routing network may be, for example, for IPV4, the address segment information may be the first and last address information of the address segment; for IPV6, the address segment information may be the address prefix plus the length of the address.
  • the reachable destination address information includes 192.168.300.0/255.255.255.0, 192.168.400.0/255.255.255.0, and 192.168.500.0/255.255.255.0.
  • the target network information further includes the third network instance identifier of the N3 interface of the first UPF.
  • the third network instance identifier is used to indicate the network to which the N3 interface of the first UPF belongs, for example, the network is divided by region, and the third network instance identifier indicates that the network to which the N3 interface of the first UPF belongs is region A.
  • the first UPF sends the target network information to the NRF, so that the NRF receives the target network information from the first UPF.
  • the first UPF queries the NRF for service area information of the base station with which the N3 interface exists, and sends the target network information to the NRF. Specifically, the first UPF sends a query request to the NRF, and the query request includes target network information.
  • the first UPF subscribes to the NRF the service area information of the base station with which the N3 interface exists, and sends the target network information to the NRF. Specifically, the first UPF sends a subscription request to the NRF, and the subscription request includes target network information.
  • the NRF After the NRF receives the subscription request from the first UPF, if there is the service area information of the base station with the N3 interface with the first UPF, the service area information of the base station is sent to the first UPF; if there is no N3 with the first UPF The service area information of the base station of the interface or the service area information of some base stations that have an N3 interface with the first UPF, then after the base station with the N3 interface with the first UPF or the other base stations with the N3 interface with the first UPF go online, the NRF Send the service area information of the base station that has the N3 interface with the first UPF to the first UPF.
  • S304 The NRF learns the service area of the first UPF according to the N3 interface information of the first base station and the target network information, where the service area of the first UPF includes the service area of the first base station.
  • the NRF determines that the route between the first base station and the first UPF is reachable according to the N3 interface information of the first base station and the target network information, that is, determines that data can be transmitted between the first base station and the first UPF.
  • the NRF determines that there is an N3 interface between the first base station and the first UPF according to the N3 interface information of the first base station and the target network information; or, the NRF determines according to the N3 interface information of the first base station and the target network information
  • the first UPF queries the service area information of the first base station;
  • Case 3 The NRF determines that the first UPF subscribes to the service area information of the first base station according to the N3 interface information of the first base station and target network information.
  • the NRF can first determine that the route between the first base station and the first UPF is reachable according to the N3 interface information of the first base station and the target network information, and then determine that there is an N3 interface between the first base station and the first UPF /The first UPF queries the service area information of the first base station/The first UPF subscribes to the service area information of the first base station. It can also be directly determined according to the N3 interface information of the first base station and the target network information that there is an N3 interface between the first base station and the first UPF/the first UPF queries the service area information of the first base station/the first UPF subscribes to the first UPF Service area information of the base station. This application does not limit this.
  • the N3 interface information of the first base station includes the IP address 192.168.300.21 of the N3 interface of the first base station, and the target network information includes 192.168.300.0/255.255.255.0.
  • NRF performs the logical AND operation of 192.168.300.21 and 255.255.255.0
  • the result is 192.168.300.0, it is determined that the route between the first base station and the first UPF is reachable/there is an N3 interface between the first base station and the first UPF/the first UPF queries the service area information of the first base station /The first UPF subscribes to the service area information of the first base station.
  • the NRF also needs to determine that the first network instance identifier is the same as the third network instance identifier, thereby determining The route between the first base station and the first UPF is reachable/There is an N3 interface between the first base station and the first UPF/The first UPF queries the service area information of the first base station/The first UPF subscribes to the service of the first base station Regional information.
  • This application does not limit how the NRF learns the service area of the first UPF.
  • the following describes two methods for NRF to learn the service area of the first UPF:
  • Method 1 NRF determines that the route between the first base station and the first UPF is reachable/There is an N3 interface between the first base station and the first UPF/The first UPF queries the service area information of the first base station/The first UPF subscribes to this After the service area information of the first base station, the NRF adds the service area of the first base station to the service area of the first UPF, and saves the updated service area information of the first UPF in the configuration file of the first UPF.
  • the service area of the first UPF is the sum of the service areas of the base stations interfaced by the first UPF, including the tracking area or cell of the first base station interfaced, and the service area information of the first UPF is the base station interfaced by the first UPF
  • the sum of service area information includes the TAI(s) or cell ID(s) of the first base station to which it is interfaced.
  • the NRF learns the service area of the first UPF.
  • Method 2 NRF determines that the route between the first base station and the first UPF is reachable/there is an N3 interface between the first base station and the first UPF/the first UPF queries the service area information of the first base station/the first UPF subscribes to this After the service area information of the first base station, the service area information of the first UPF from the first UPF is received.
  • the NRF sends the service area information of the first base station to the first UPF.
  • the first UPF adds the service area of the first base station to the service area of the first UPF.
  • the first UPF determines the service area of the first UPF.
  • the first UPF sends the service area information of the first UPF to the NRF.
  • the NRF updates the configuration file of the first UPF in the NRF.
  • S305 The NRF learns the service area of the SMF.
  • SMF controls the first UPF.
  • This application does not limit how NRF learns the service area of SMF.
  • the following describes two methods for NRF to learn the service area of SMF:
  • Method 1 The NRF determines that the first UPF is controlled by the SMF, and adds the service area of the first UPF to the service area of the SMF.
  • NRF After performing the above operations on the UPF controlled by SMF, NRF knows the service area of SMF
  • Method 2 NRF receives SMF service area information from SMF.
  • the NRF or the first UPF sends the service area information of the first UPF to the SMF.
  • the SMF adds the service area of the first UPF to the service area of the SMF.
  • the SMF determines the service area of the SMF.
  • the SMF sends the service area information of the SMF to the NRF, and the service area information of the SMF includes the service area information of the UPF controlled by the SMF.
  • the NRF When the NRF sends the service area information of the first UPF to the SMF, the NRF needs to determine that the first UPF is controlled or subscribed by the SMF. For how the NRF determines that the first UPF is controlled or subscribed by the SMF, please refer to S406b The description is not repeated here. In the case where the first UPF sends the service area information of the first UPF to the SMF, since the SMF will actively establish a connection with the first UPF in the prior art, no further description will be given.
  • the NRF learns that the service area of the first base station is a part of the service area of the first UPF according to the N3 interface information of the first base station and the target network information of the first UPF, and then learns that the service area of the first UPF is SMF Part of the service area. Perform the same operation on the base station interfaced by the first UPF and perform the same operation on the UPF controlled by the SMF, thereby determining the service area of the first UPF and the service area of the SMF.
  • This method realizes the automatic configuration of the service area, avoids a complicated manual configuration process, and reduces the workload of network configuration.
  • FIG. 4 is a method for determining a service area provided by an embodiment of the application, and the method includes the following steps:
  • S401 One or more base stations send their respective N3 interface information and service area information to the NRF, so that the NRF obtains the N3 interface information and service area information of the one or more base stations.
  • the following takes the first base station of one or more base stations as an example for description.
  • the N3 interface information of the first base station, the service area information of the first base station, and the method how the first base station sends the N3 interface information and service area information of the first base station to the NRF refer to the description in S301 for details, and will not be repeated.
  • the first UPF sends the target network information to the NRF, so that the NRF receives the target network information from the first UPF.
  • S404 The NRF determines that the route between the first base station and the first UPF is reachable according to the N3 interface information of the first base station and the target network information.
  • the NRF determines that the first UPF can send data to the first base station according to the N3 interface information of the first base station and the target network information.
  • the N3 interface information of the first base station includes the IP address 192.168.300.21 of the N3 interface of the first base station.
  • 192.168.300.0/255.255.255.0 included in the target network information it can be determined that the first UPF passes through the router R1 and passes through The intermediate routing network sends the data to the first base station. Therefore, the NRF determines that the route between the first base station and the first UPF is reachable.
  • the N3 interface information of the first base station includes the first network instance identifier, and the target network information includes the third network instance identifier, when the NRF determines that there is an N3 interface between the first base station and the first UPF, it also needs to determine the first The first network instance identifier is the same as the third network instance identifier.
  • this step takes NRF determining that the route between the first base station and the first UPF is reachable as an example. NRF determines that there is an N3 interface between the first base station and the first UPF. You can also refer to this step. Do not repeat it.
  • the NRF After determining that the route between the first base station and the first UPF is reachable, the NRF adds the service area of the first base station to the service area of the first UPF.
  • the NRF determines that the route between one or more base stations in S401 and the first UPF is reachable, and finally determines that the route between the first base station and the first UPF is reachable. Similarly, the NRF can determine that the routes between other base stations and the first UPF are reachable, and perform the same actions as the first base station on the base stations that have an N3 interface with the first UPF, thereby determining the service area of the first UPF.
  • S406a The NRF adds the service area of the first UPF to the service area of the SMF.
  • the NRF determines that the first UPF is controlled by the SMF, and adds the service area of the first UPF to the service area of the SMF.
  • the NRF determines that the first UPF is controlled by the SMF in the following ways: when the first UPF registers, it provides the NRF with a first service area identification information, and the SMF can also provide the NRF with a second service area identification information. If the NRF determines The second service area identification information provided by the first UPF includes or is equal to the first service area identification information, and the NRF determines that the first UPF is SMF controlled. Among them, SMF can provide NRF with a second service area identification information during registration. Both the first service area identification information and the second service area identification information are currently defined as character strings that can indicate geographic locations. It is understandable that as long as it can The information indicating the geographic location may all be the service area identification information in the embodiment of this application, which is not limited in this application.
  • the NRF can perform the above operations on all UPFs controlled by the SMF, so as to determine the service area of the SMF.
  • the NRF can determine the service area of the SMF during the initial registration of the SMF, and can also determine the service area of the SMF when the UPF registration, deletion, and service area controlled by the SMF are changed, so as to update the service area of the SMF.
  • the NRF sends the service area information of the first UPF to the SMF, so that the SMF receives the service area information of the first UPF from the NRF.
  • the NRF determines that the first UPF is controlled by the SMF before sending the service area information of the first UPF to the SMF.
  • the NRF determines that the first UPF is controlled by the SMF please refer to the description in S406a, which will not be repeated.
  • the SMF subscribes to the NRF to notify the NRF of the change notification of the configuration file of the UPF controlled by it, and the NRF determines that the first UPF is subscribed by the SMF, and thus sends the service area information of the first UPF to the SMF.
  • the NRF provides the second service area identification information to the NRF, and the NRF determines the second service area identification information according to the first service area identification information provided during the registration of the first UPF.
  • the service area identification information includes the first service area identification information, so that it is determined that the SMF subscribes to the first UPF, and the service area information of the first UPF is sent to the SMF. Or, when the SMF subscribes to the NRF for the notification of the change of the configuration file of the UPF controlled by it, it provides the NRF with the list of the UPF controlled by it, and the NRF determines that the list includes the first UPF, thereby sending the service area information of the first UPF to SMF.
  • the NRF can provide the service area information of the UPF controlled by it to the SMF, or the change notification of the configuration file of the UPF subscribed by the SMF After that, the updated service area information of the UPF is provided to the SMF, which is not limited in the embodiment of the present application.
  • this step takes the first UPF as an example, and the NRF also performs this step for other UPFs and NRFs controlled or subscribed to by the SMF.
  • S407b The SMF adds the service area of the first UPF to the service area of the SMF.
  • the SMF determines the service area of the SMF.
  • the SMF sends the service area information of the SMF to the NRF, so that the NRF receives the service area information of the SMF.
  • the service area information of the SMF includes the service area information of the UPF controlled by the SMF. After receiving the service area information of the SMF, the NRF saves the service area information of the SMF in the configuration file of the SMF.
  • NRF can send SMF service area information to SMF; through S406a or S406b-S408b, after NRF knows the service area of SMF, it can notify other network elements, such as AMF , So that other network elements can perform corresponding operations.
  • NRF determines that the route between the first base station and the first UPF is reachable according to the N3 interface information of the first base station and the target network information of the first UPF, and learns that the service area of the first base station is served by the first UPF It is learned that the service area of the first UPF is part of the service area of the SMF. Perform the same operation on the base station interfaced by the first UPF and perform the same operation on the UPF controlled by the SMF, thereby determining the service area of the first UPF and the service area of the SMF.
  • This method realizes the automatic configuration of the service area, avoids a complicated manual configuration process, and reduces the workload of network configuration.
  • FIG. 5 is a method for determining a service area provided by an embodiment of this application.
  • the method includes the following steps:
  • S501 One or more base stations send their respective N3 interface information and service area information to the NRF, so that the NRF obtains the N3 interface information and service area information of the one or more base stations.
  • the first UPF After configuring the routing protocol on the N3 interface, the first UPF obtains the target network information of the N3 interface through the routing protocol.
  • S503 The first UPF queries or subscribes to the NRF for service area information of the base station with which the N3 interface exists.
  • the first UPF may query the service area information of the base station with the N3 interface with the first UPF in the following manner: the first UPF sends a query request to the NRF, and the query request includes target network information.
  • the first UPF may subscribe to the service area information of the base station with which the N3 interface exists while querying the NRF, or subscribe separately.
  • the first UPF can subscribe to the service area information of the base station with the N3 interface with it in the following manner: the first UPF sends a subscription request to the NRF, the subscription request includes the target network information, if a new base station is subsequently registered, and the NRF determines If the new base station is subscribed by the first UPF, the NRF sends the service area information of the new base station to the first UPF.
  • S504 The NRF determines that the first UPF queries or subscribes to the service area information of the first base station.
  • the NRF determines the first UPF to query or subscribe to the service area information of the first base station according to the N3 interface information of the first base station and the target network information.
  • the N3 interface information of the first base station includes the IP address 192.168.300.21 of the N3 interface of the first base station
  • the target network information includes 192.168.300.0/255.255.255.0.
  • NRF performs the logical AND operation of 192.168.300.21 and 255.255.255.0 Afterwards, the result obtained is 192.168.300.0, and it is determined that the first UPF queries or subscribes to the service area information of the first base station.
  • the NRF also needs to determine the first network instance identifier when determining that there is an N3 interface between the first UPFs Same as the third network instance identifier.
  • S505 The NRF sends the service area information of the first base station to the first UPF, so that the first UPF receives the service area information of the first base station from the NRF.
  • the first UPF adds the service area of the first base station to the service area of the first UPF according to the service area information of the first base station.
  • the first UPF determines the service area of the first UPF.
  • the first UPF sends the service area information of the first UPF to the NRF, so that the NRF saves the updated service area information of the first UPF in the configuration file of the first UPF.
  • the NRF or the first UPF sends the service area information of the first UPF to the SMF, so that the SMF receives the service area information of the first UPF from the NRF or the first UPF.
  • the NRF sends the service area information of the first UPF to the SMF. For details, refer to the description in S406b.
  • S509 The SMF adds the service area of the first UPF to the service area of the SMF.
  • the SMF sends the service area information of the SMF to the NRF, so that the NRF receives the service area information of the SMF.
  • the NRF determines that the first UPF subscribes to or queries the first base station according to the N3 interface information of the first base station and the target network information of the first UPF, thereby sending the service area information of the first base station to the first UPF, so that A UPF determines the service area of the first UPF.
  • the NRF or the first UPF also provides the service area information of the first UPF to the SMF, so that the SMF determines the service area of the SMF.
  • the network storage network element, user plane network element, and session management network element described above include Perform the corresponding hardware structure and/or software module for each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but this implementation should not exceed the scope of this application.
  • the embodiments of the present application can divide the network storage network elements, user plane network elements, and session management network elements into functional modules based on the foregoing method examples.
  • each functional module can be divided corresponding to each function, or two or more
  • the functions of is integrated in a processing module, and the above-mentioned integrated modules can be implemented in the form of hardware or software function modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • the aforementioned network elements or functions can be implemented by the communication device in FIG. 6.
  • the communication device 600 may be a network storage network element, a user plane network element, or a session management network element.
  • the communication device includes a processing unit 601, a communication unit 602, and optionally, a storage unit 603. Further, the communication unit 602 can be divided into a receiving unit and a sending unit, and respectively perform functions of receiving information and sending information.
  • the processing unit 601 is configured to control the actions of the foregoing network elements, for example, to support the foregoing network elements to execute the methods and steps provided in the embodiments of the present application.
  • the sending unit 602 is configured to support the foregoing network element to send information to other network entities.
  • the foregoing network element sends information to other network entities.
  • the receiving unit 603 is configured to support the foregoing network element to receive information sent by another network entity.
  • the foregoing network element receives information sent by another network entity.
  • the storage unit 603 is used to store the data and codes of the aforementioned network elements.
  • the communication device 600 may be a network storage network element.
  • FIG. 6a shows a schematic structural diagram of a network storage network element 610.
  • the network storage network element includes a processing unit 611, a communication unit 612, and optionally, a storage unit 613.
  • the network storage network element 610 may be used to perform operations of the network storage network element in the foregoing method embodiment, for example:
  • the processing unit 611 is configured to obtain the interface information of the first base station and the service area information of the first base station, where the interface information of the first base station is information of the interface between the first base station and one or more user plane network elements, one
  • the or multiple user plane network elements include a first user plane network element.
  • the communication unit 612 is configured to receive target network information from the first user plane network element, where the target network information is information about a reachable route with the first user plane network element. For details, refer to S303 in FIG. 3.
  • the processing unit 611 is configured to learn that the service area of the first base station is a part of the service area of the first user plane network element according to the interface information of the first base station and the target network information. For details, refer to S304 in FIG. 3.
  • network storage network element can be used to perform the corresponding steps in Figures 3, 4, or 5.
  • the network storage network element can be used to perform the corresponding steps in Figures 3, 4, or 5.
  • the description in the above method embodiment for example:
  • the processing unit 611 may be used to execute S305, S401, S404, S405, S406a, S501, and S504. For details, please refer to the description of the above steps.
  • the communication unit 612 can be used to execute S403, S406b, S408b, S503, S505, S507, S508, and S510. For details, please refer to the description of the above steps.
  • the communication device 600 may also be a user plane network element.
  • FIG. 6b shows a schematic structural diagram of a user plane network element 620.
  • the user plane network element includes a processing unit 621, a communication unit 622, and optionally, a storage unit 623. .
  • the user plane network element 620 may be used to perform operations of the first user plane network element in the foregoing method embodiment, for example:
  • the communication unit 622 is configured to send target network information to the network storage network element, where the target network information is information about a reachable route with the first user plane network element, and is used to determine the connection with the first user plane network element.
  • target network information is information about a reachable route with the first user plane network element, and is used to determine the connection with the first user plane network element.
  • One or more base stations with reachable routes For details, refer to S303 in FIG. 3.
  • the processing unit 621 is configured to determine the service area of the first user plane network element according to the service area information of the one or more base stations. For details, refer to S304 in FIG. 3.
  • the user plane network element can be used to perform the corresponding steps in Fig. 3, 4, 5, or 6, for details, please refer to the description in the above method embodiment, for example:
  • the processing unit 621 may be used to execute S302, S402, S502, and S506. For details, please refer to the description of the above steps.
  • the communication unit 622 may be used to execute S403, S503, S505, S507, and S508. For details, please refer to the description in the above steps.
  • the communication device 600 may also be a session management network element.
  • FIG. 6c shows a schematic structural diagram of a session management network element 630.
  • the session management network element includes a processing unit 631 and, optionally, a storage unit 633.
  • the session management network element 630 may be used to perform operations of the session management network element in the foregoing method embodiment, for example:
  • the processing unit 631 is configured to obtain service area information of one or more user plane network elements, and the one or more user plane network elements are network elements controlled by the session management network element. For details, refer to S305 in FIG. 3.
  • session management network element can be used to execute the corresponding steps in Fig. 3, 4, 5, or 6, for details, please refer to the description in the above method embodiment, for example:
  • the processing unit 631 may be used to execute S407b and S509, and for details, please refer to the description in the foregoing steps.
  • the communication unit 632 may be used to execute S406b, S408b, S508, and S510. For details, please refer to the description of the above steps.
  • the processing unit 601, 611, 621, or 631 can be one or more processors
  • the communication unit 602, 612, 622, or 632 can be one or more transceivers
  • the storage unit 603, 613, 623, or 633 can be one When one or more of them are memories
  • the network storage network element, user plane network element, or session management network element involved in the embodiment of the present application may have the structure shown in FIG. 7.
  • the communication device 700 includes a processor 701, a transceiver 702, and optionally, a memory 703 and a bus 704.
  • the processor 701, the transceiver 702, and the memory 703 are connected by a bus 704.
  • the processor 701 may be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application-specific integrated circuit (ASIC), which can A field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logical blocks, modules, and circuits described in conjunction with this application.
  • the processor may also be a combination that implements computing functions, for example, including a combination of one or more microprocessors, a combination of DSP and microprocessor, and so on.
  • the bus 704 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in FIG. 7, but it does not mean that there is only one bus or one type of bus.
  • An embodiment of the present application also provides a chip system 800, which includes at least one processor 801 and an interface circuit 802. The processor 801 and the interface circuit 802 are connected.
  • the processor 801 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 801 or instructions in the form of software.
  • the aforementioned processor 801 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware Components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • the methods and steps disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the interface circuit 802 can complete the sending or receiving of data, instructions or information.
  • the processor 801 can use the data, instructions or other information received by the interface circuit 802 to perform processing, and can send processing completion information through the interface circuit 802.
  • the chip system further includes a memory 803.
  • the memory 803 may include a read-only memory and a random access memory, and provides operation instructions and data to the processor.
  • a part of the memory 803 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • the memory 803 stores an executable software module or data structure, and the processor 803 can execute corresponding operations by calling an operation instruction stored in the memory (the operation instruction may be stored in an operating system).
  • the chip system may be used in the session management network element, user plane network element, or third-party device involved in the embodiment of the present application.
  • the interface circuit 802 is configured to perform the steps of receiving and sending the network storage network element, the user plane network element, or the session management network element in the embodiments shown in FIG. 3 to FIG. 5.
  • the processor 801 is configured to execute the processing steps of the network storage network element, the user plane network element, or the session management network element in the embodiments shown in FIG. 3 to FIG. 5.
  • the memory 803 is used to store data and instructions of the network storage network element, the user plane network element, or the session management network element in the embodiments shown in FIGS. 3 to 5.
  • the embodiment of the present application also provides a computer-readable storage medium.
  • the methods described in the foregoing method embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. If implemented in software, the functions can be stored as one or more instructions or codes on a computer-readable medium or transmitted on the computer-readable medium.
  • Computer-readable media may include computer storage media and communication media, and may also include any media that can transfer a computer program from one place to another.
  • the storage medium may be any available medium that can be accessed by a computer.
  • the computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used for carrying or with instructions or data structures
  • the required program code is stored in the form of and can be accessed by the computer.
  • any connection is properly termed a computer-readable medium.
  • coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave
  • coaxial cable, fiber optic cable , Twisted pair, DSL or wireless technologies such as infrared, radio, and microwave are included in the definition of the medium.
  • Magnetic disks and optical disks as used herein include compact disks (CDs), laser disks, optical disks, digital versatile disks (DVDs), floppy disks and blu-ray disks, where disks usually reproduce data magnetically, and optical disks reproduce data optically using lasers. Combinations of the above should also be included in the scope of computer-readable media.
  • the embodiment of the present application also provides a computer program product.
  • the methods described in the foregoing method embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. If it is implemented in software, it can be fully or partially implemented in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the above computer program instructions are loaded and executed on the computer, the processes or functions described in the above method embodiments are generated in whole or in part.
  • the above-mentioned computer may be a general-purpose computer, a special-purpose computer, a computer network, network equipment, user equipment, or other programmable devices.

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Abstract

为实现服务区域的自动配置、避免复杂的人工配置过程以及减少网络配置的工作量，本申请提供一种确定服务区域的办法、装置及系统。该方法包括：网络存储网元获取第一基站的接口信息和所述第一基站的服务区域信息，其中，所述第一基站的接口信息为所述第一基站与一个或多个用户面网元之间接口的信息，所述一个或多个用户面网元包括第一用户面网元；所述网络存储网元接收来自所述第一用户面网元的目标网络信息，其中，所述目标网络信息为所述第一用户面网元可达的路由的信息；所述网络存储网元根据所述第一基站的接口信息和所述目标网络信息，获知所述第一用户面网元的服务区域，其中，所述第一用户面网元的服务区域包括所述第一基站的服务区域。

Description

一种确定服务区域的方法、装置及系统
本申请要求于2019年3月28日提交中国国家知识产权局、申请号为201910242781.8、申请名称为“一种确定服务区域的方法、装置及系统”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，尤其涉及一种确定服务区域的方法、装置及系统。
背景技术
在第五代移动通信技术(5-generation，5G)中，基站的服务区域为基站所覆盖的一个或多个跟踪区(tracking area)、一个或多个小区(cell)等。用户面功能(user plane function，UPF)网元的服务区域定义为与其接口的基站的服务区域的总和。会话管理功能(session management function，SMF)网元的服务区域定义为SMF网元所控制的UPF网元的服务区域的总和。在网络存储功能(network repository function，NRF)网元中的SMF网元的配置文件中包括SMF网元的服务区域。
现有技术中，UPF网元的服务区域只能靠人工配置的方法获得，相应的，SMF网元的服务区域也只能靠人工配置的方法获得，并且人工配置的过程复杂，带来的工作量大。
发明内容
为实现服务区域的自动配置、避免复杂的人工配置过程以及减少网络配置的工作量，本申请提供一种确定服务区域的办法、装置及系统。
第一方面，本申请提供了一种确定服务区域的方法，该方法包括：网络存储网元获取第一基站的接口信息和所述第一基站的服务区域信息，其中，所述第一基站的接口信息为所述第一基站与一个或多个用户面网元之间接口的信息，所述一个或多个用户面网元包括第一用户面网元；所述网络存储网元接收来自所述第一用户面网元的目标网络信息，其中，所述目标网络信息为与所述第一用户面网元之间可达的路由的信息；所述网络存储网元根据所述第一基站的接口信息和所述目标网络信息，获知所述第一用户面网元的服务区域，其中，所述第一用户面网元的服务区域包括所述第一基站的服务区域。通过上述方法，网络存储网元根据第一基站的接口信息和目标网络信息，获知第一基站的服务区域为第一用户面网元的服务区域的一部分。对与第一用户面网元接口的一个或多个基站执行该操作，从而能够确定第一用户面网元的服务区域。该方法实现了服务区域的自动配置，避免了复杂的人工配置过程，以及减少了网络配置的工作量。
在一种可能的实现方式中，所述网络存储网元根据所述第一基站的接口信息和所述目标网络信息，获知所述第一用户面网元的服务区域包括：所述网络存储网元根据所述接口信息和所述目标网络信息，确定所述第一基站与所述第一用户面网元之间的路由可达；所述网络存储网元将所述第一基站的服务区域加入至所述第一用户面网元的服务区域。
在一种可能的实现方式中，所述网络存储网元根据所述第一基站的接口信息和所述目标网络信息，获知所述第一用户面网元的服务区域包括：所述网络存储网元根据所述接口信息和所述目标网络信息，确定所述第一基站与所述第一用户面网元之间的路由可达；所述网络存储网元将所述第一基站的服务区域信息发送给所述第一用户面网元；所述网络存储网元接收来自所述第一用户面网元的所述第一用户面网元的服务区域信息。如此，网络存储网元确定第一基站与第一用户面网元之间的路由可达，从而将第一基站的服务区域信息发送给第一用户面网元，对与第一用户面网元接口的一个或多个基站执行该操作，使得第一用户面网元能够确定第一用户面网元的服务区域，并将第一用户面网元的服务区域信息提供给网络存储网元，以更新第一用户面网元保存在网络存储网元的配置文件。
在一种可能的实现方式中，所述网络存储网元根据所述接口信息和所述目标网络信息，确定所述第一基站与所述第一用户面网元之间存在接口；或者确定所述第一基站为所述第一用户面网元所订阅，或者确定所述第一基站为所述第一用户面网元所查询。
在一种可能的实现方式中，所述网络存储网元获知会话管理网元的服务区域，其中，所述会话管理网元为控制所述第一用户面网元的网元，所述会话管理网元的服务区域包括所述第一用户面网元的服务区域。
在上述可能的实现方式中，所述网络存储网元获知所述会话管理网元的服务区域包括：所述网络存储网元将所述第一用户面网元的服务区域加入至所述会话管理网元的服务区域。如此，网络存储网元对会话管理网元所控制的一个或多个用户面网元执行该操作，从而能够确定第一用户面网元的服务区域。
在上述可能的实现方式中，所述网络存储网元获知所述会话管理网元的服务区域包括：所述网络存储网元将所述第一用户面网元的服务区域信息发送给所述会话管理网元；所述网络存储网元接收来自所述会话管理网元的所述会话管理网元的服务区域信息。如此，网络存储网元将第一用户面网元的服务区域信息发送给会话管理网元，对会话管理网元控制的一个或多个基站执行该操作，使得会话管理网元能够确定会话管理网元的服务区域，并将会话管理网元的服务区域信息提供给网络存储网元，以更新会话管理网元保存在网络存储网元的配置文件。
在一种可能的实现方式中，所述网络存储网元接收来自所述第一用户面网元的第一服务区域标识信息，所述第一服务区域标识信息用于指示所述第一用户面网元对应的服务区域；所述网络存储网元接收来自所述会话管理网元的第二服务区域标识信息，所述第二服务区域标识信息用于指示所述会话管理网元对应的服务区域；若确定所述第二服务区域标识信息包括所述第一服务区域标识信息，则所述网络存储网元确定所述第一用户面网元为所述会话管理网元所控制；或者若确定所述第二服务区域标识信息包括所述第一服务区域标识信息，则所述网络存储网元确定所述第一用户面网元为所述会话管理网元所订阅。如此，网络存储网元确定第一用户面网元为所述会话管理网元所订阅或所控制，进一步确定或使得会话管理网元确定会话管理网元的服务区域。
在一种可能的实现方式中，网络存储网元获取第一基站的接口信息和所述第一基站的服务区域信息包括：所述网络存储网元获取来自所述第一基站的所述第一基站的接口信息和所述第一基站的服务区域信息；或者所述网络存储网元获取来自移动管理网元的所述第一基站的接口信息和所述第一基站的服务区域信息。
在一种可能的实现方式中，所述第一基站的接口信息包括所述第一基站与所述第一用户面网元之间接口的互联网协议IP地址。
在一种可能的实现方式中，所述第一基站的服务区域信息包括所述第一基站的跟踪区标识和/或小区标识。
在一种可能的实现方式中，所述目标网络信息包括可达目的地址信息，所述可达目的地址信息包括以下任意一项或多项：与所述网络存储网元之间路由可达的一个或多个互联网协议IP地址；与所述网络存储网元之间路由可达的一个或多个地址段；与所述网络存储网元之间路由可达的一个或多个IP地址加掩码。
第二方面，本申请提供了一种确定服务区域的方法，该方法包括：第一用户面网元向网络存储网元发送目标网络信息，其中，所述目标网络信息为所述第一用户面网元可达的路由的信息，用于确定与所述第一用户面网元之间的路由可达的一个或多个基站；所述第一用户面网元接收来自所述网络存储网元的所述一个或多个基站的服务区域信息；所述第一用户面网元根据所述一个或多个基站的服务区域信息，确定所述第一用户面网元的服务区域。
通过上述方法，第一用户面网元将目标网络信息提供给网络存储网元，使得网络存储网元确定与第一用户面网元之间路由可达的一个或多个基站，并将该一个或多个基站的服务区域信息提供给第一用户面网元。第一用户面根据该一个或多个基站的服务区域信息，确定该第一用户面网元的服务区域信息。该方法实现了服务区域的自动配置，避免了复杂的人工配置过程，以及减少了网络配置的工作量。
在一种可能的实现方式中，所述第一用户面网元确定所述第一用户面网元的服务区域包括：所述第一用户面网元将所述一个或多个基站的服务区域加入至所述第一用户面网元的服务区域。
在一种可能的实现方式中，所述第一用户面网元将所述第一用户面网元的服务区域信息发送给所述网络存储网元。
在一种可能的实现方式中，所述第一用户面网元将所述第一用户面网元的服务区域信息发送给会话管理网元，其中，所述会话管理网元为控制所述第一用户面网元的网元。
第三方面，本申请提供了一种确定服务区域的方法，该方法包括：会话管理网元获取一个或多个用户面网元的服务区域信息，所述一个或多个用户面网元为所述会话管理网元控制的网元；所述会话管理网元根据所述一个或多个用户面网元的服务区域信息，确定所述会话管理网元的服务区域。
通过上述方法，会话管理网元获取其控制的一个或多个用户面网元的服务区域信息，从而确定该会话管理网元的服务区域信息。该方法实现了服务区域的自动配置，避免了复杂的人工配置过程，以及减少了网络配置的工作量。
在一种可能的实现方式中，所述会话管理网元确定所述会话管理网元的服务区域包括：所述会话管理网元将所述一个或多个用户面的服务区域加入至所述会话管理网元的服务区域。
在一种可能的实现方式中，所述会话管理网元将所述会话管理网元的服务区域信息发送给网络存储网元。
在一种可能的实现方式中，所述会话管理网元获取所述一个或多个用户面网元的服务区域信息包括：所述会话管理网元获取来自所述一个或多个用户面网元的所述一个或 多个用户面网元的服务区域信息；或者所述会话管理网元获取来自网络存储网元的所述一个或多个用户面网元的服务区域信息。
第四方面，第四方面，本申请提供了一种网络存储网元，该网络存储网元具有实现上述第一方面中所述方法的功能。所述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。所述硬件和软件包括一个或多个与上述功能相对应的模块。
在一种可能的设计中，该网络存储网元的结构中包括处理器和收发器，所述处理器被配置为支持该网络存储网元执行上述第一方面中所述的方法，所述收发器用于支持该网络存储网元与其他设备之间的通信。该网络存储网元还可以包括存储器，所述存储器用于与处理器耦合，其保存该网络存储网元必要的程序指令和数据。
第五方面，本申请提供了一种用户面网元，该用户面网元具有实现上述第二方面中所述方法的功能。所述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。所述硬件和软件包括一个或多个与上述功能相对应的模块。
在一种可能的设计中，该用户面网元的结构中包括处理器和收发器，所述处理器被配置为支持该用户面网元执行上述第二方面中所述的方法，所述收发器用于支持该用户面网元与其他设备之间的通信。该用户面网元还可以包括存储器，所述存储器用于与处理器耦合，其保存该用户面网元必要的程序指令和数据。
第六方面，本申请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三方面中所述方法的功能。所述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。所述硬件和软件包括一个或多个与上述功能相对应的模块。
在一种可能的设计中，该会话管理网元的结构中包括处理器和收发器，所述处理器被配置为支持该会话管理网元执行上述第三方面中所述的方法，所述收发器用于支持该会话管理网元与其他设备之间的通信。该会话管理网元还可以包括存储器，所述存储器用于与处理器耦合，其保存该会话管理网元必要的程序指令和数据。
第七方面，本申请提供了一种装置(例如，该装置可以是芯片系统)，该装置包括处理器，可以执行上述第一方面至第三方面中所述的任意一种或多种方法。
在一种可能的设计中，该装置还包括存储器，用于保存必要的程序指令和数据。
第八方面，本申请提供了一种计算机程序产品，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至第三方面中所述的任意一种或多种方法。
第九方面，本申请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至第三方面中中所述的任意一种或多种方法。
第十方面，本申请提供了一种通信系统，该系统包括上述第一方面所涉及的网络存储网元，第二方面所涉及的用户面网元或第三方面所涉及的会话管理网元中的任意多个。
在一种可能的设计中，该系统还包括与第一方面所涉及的网络存储网元，或第二方面所涉及的用户面网元，或第三方面所涉及的会话管理网元进行交互的其他设备，例如基站等等。
附图说明
图1为本申请实施例提供的一种网络架构示意图；
图2为本申请实施例提供的一种用户面网元通过路由协议与基站接口的示意图；
图3为本申请实施例提供的一种确定服务区域的方法的流程图；
图4为本申请实施例提供的又一种确定服务区域的方法的流程图；
图5为本申请实施例提供的又一种确定服务区域的方法的流程图；
图6为本申请实施例提供的一种通信设备的结构示意图；
图6a为本申请实施例提供的一种网络存储网元的结构示意图；
图6b为本申请实施例提供的一种用户面网元的结构示意图；
图6c为本申请实施例提供的一种会话管理网元的结构示意图；
图7为本申请实施例提供的另一种通信设备的结构示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施例的技术方案进行描述。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。“一个或多个”或其类似的表达，是指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和c中的一个或多个，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。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通信(global system for mobile communications，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、未来的5G系统或新无线(new radio，NR)等。
本申请实施例中的终端设备可以指用户设备、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G系统中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
图1为本申请实施例适用的一种网络架构。如图1所示，该网络架构是从服务化接口的角度描述的网络架构，对该网络架构中涉及的各个网元分别进行说明。
1、(无线)接入网络(Radio Access Network，(R)AN)网元：用于为特定区域的授权用户提供入网功能，并能够根据用户的级别，业务的需求等使用不同质量的传输隧道。(R)AN网元能够管理无线资源，为终端设备提供接入服务，进而完成控制信号和用户数据在终端设备和核心网之间的转发，(R)AN网元也可以理解为传统网络中的基站。例如，可以是GSM系统或CDMA中的基站(base transceiver station，BTS),也可以是WCDMA系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(evolutional node B，eNB或eNodeB)，还可以是5G基站(generation Node B，gNB)或者可以为中继站、接入点、车载设备、可穿戴设备以及未来5G通信系统中的网络侧设备或未来演进的PLMN网络中的网络设备等。
2、用户面网元：用于分组路由和转发以及用户面数据的服务质量(quality of service，QoS)处理等。在5G系统中，该用户面网元可以是UPF网元。在未来通信系统中，用户面网元仍可以是UPF网元，或者，还可以有其它的名称，本申请不做限定。
3、数据网络网元：用于提供传输数据的网络。在5G系统中，该数据网络网元可以是数据网络(Data Network，DN)网元。在未来通信系统中，数据网络网元仍可以是DN网元，或者，还可以有其它的名称，本申请不做限定。
4、鉴权服务网元：用于实现对用户的鉴权和认证等。在5G系统中，该鉴权服务网元可以是认证服务器功能(authentication server function，AUSF)网元。在未来通信系统中，鉴权服务网元仍可以是AUSF网元，或者，还可以有其它的名称，本申请不做限定。
5、移动管理网元：主要用于移动性管理和接入管理等。在第4代(4th generation，4G)系统中，该移动管理网元可以是移动性管理实体(mobility management entity，MME)。在5G系统中，该移动管理网元可以是接入管理功能(Access and mobility Management Function，AMF)网元。在未来通信系统中，移动管理网元仍可以是AMF网元，或者，还可以有其它的名称，本申请不做限定。
6、会话管理网元：主要用于会话管理、终端设备的网络互连协议(internet protocol，IP)地址分配和管理、选择可管理用户平面功能、策略控制和收费功能接口的终结点以及下行数据通知等。在5G系统中，该会话管理网元可以是SMF网元。在未来通信系统中，会话管理网元仍可以是SMF网元，或者，还可以有其它的名称，本申请不做限定。
7、网络开放网元：用于安全地向外部开放由3GPP网络功能网元提供的业务和能力等。在4G系统中，该网络开放网元可以是业务能力开放功能(service capability exposure function，SCEF)网元。在5G系统中，该网络开放网元可以是网络开放功能(Network Exposure Function，NEF)网元。在未来通信系统中，网络开放网元仍可以是NEF网元，或者，还可以有其它的名称，本申请不做限定。
8、网络存储网元：用于存储核心网中部署的网络功能的信息，提供网络功能和服务的发现等。在5G系统中，该网络存储网元可以是网络存储功能(network repository function，NRF)网元，在未来通信系统中，网络存储网元仍可以是NRF网元，还可以有其它的名称，本申请不做限定。
9、策略控制网元：用于指导网络行为的统一策略框架，为控制面功能网元(例如AMF，SMF网元等)提供策略规则信息等。在5G系统中，该策略控制网元可以是策略控制功能(Policy Control Function，PCF)网元。在未来通信系统中，策略控制网元仍可以是PCF网元，或者，还可以有其它的名称，本申请不做限定。
10、数据管理网元：用于处理用户标识，接入鉴权，注册以及移动性管理等。在4G系统中，该数据管理网元可以是归属用户服务器(home subscriber server，HSS)。在5G系统中，该数据管理网元可以是统一数据管理(Unified Data Management，UDM)网元。在未来通信系统中，数据管理仍可以是UDM网元，或者，还可以有其它的名称，本申请不做限定。
11、应用网元：用于进行应用影响的数据路由，接入网络开放功能网元，与策略框架交互进行策略控制等。在5G系统中，该应用网元可以是应用功能(Application Function，AF)网元。在未来通信系统中，应用网元仍可以是AF网元，或者，还可以有其它的名称，本申请不做限定。
可以理解的是，上述网元或者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软件功能，或者是平台(例如，云平台)上实例化的虚拟化功能。
在该网络架构中，Nausf为AUSF网元105展现的基于服务的接口，Namf为AMF网元106展现的基于服务的接口，Nsmf为SMF网元107展现的基于服务的接口，Nnef为NEF网元108展现的基于服务的接口，Nnrf为NRF网元109展现的基于服务的接口，Npcf为PCF网元110展现的基于服务的接口，Nudm为UDM网元111展现的基于服务的接口，Naf为AF网元112展现的基于服务的接口。N1为UE101和AMF网元106之间的参考点，N2为(R)AN网元102和AMF网元106的参考点，用于非接入层(Non-access stratum，NAS)消息的发送等；N3为(R)AN网元102和UPF网元103之间的参考点，用于传输用户面的数据等；N4为SMF网元107和UPF网元103之间的参考点，用于传输例如N3连接的隧道标识信息，数据缓存指示信息，以及下行数据通知消息等信息；N6接口为UPF网元103和DN网元104之间的参考点，用于传输用户面的数据等。
应理解，上述应用于本申请实施例的网络架构仅是举例说明的从服务化架构的角度描述的网络架构，适用本申请实施例的网络架构并不局限于此，任何能够实现上述各个网元的功能的网络架构都适用于本申请实施例。
例如，在某些网络架构中，AMF网元106、SMF网元107、PCF网元110以及UDM网元111等网络功能网元实体都称为网络功能网元(network function，NF)网元；或者，在另一些网络架构中，AMF网元106，SMF网元107，PCF网元110，UDM网元111等网元的集合都可以称为控制面功能网元。
其中，NF网元可按照功能的类别定义为不同的NF，例如：认证和安全功能、分组数据会话管理功能、移动管理功能及接入控制功能、策略控制功能等，这些功能由对应的NF组件实现，每个NF组件通过定义的服务接口对其他NF组件或功能提供服务。
需要说明的是，后续实施例中所描述的UPF网元、SMF网元、AMF网元、NRF网元、gNB只是举例说明，并不构成对本申请实施例的限定。即本申请后续所描述的UPF网元可替换为用户面网元，SMF网元可替换为会话管理网元，AMF网元可替换为移动管理网元，NRF网元可替换为网络存储网元，gNB可替换为基站或者接入网络设备。且UPF网元、SMF网元、AMF网元以及NRF网元可以简称为UPF、SMF、AMF、NRF。
首先，对UPF通过路由协议与基站接口进行说明：
可以理解的是，路由协议可以是路径信息协议(routing information protocol，RIP)、边界网关协议(border gateway protocol，BGP)或者开放式最短路径优先(open shortest path  first，OSPF)协议，本申请对此不作限定。下述实施例以路由协议为OSPF为例，如图2所示，为UPF通过OSPF协议与基站接口的示意图。
图2中，UPF的N3接口的IP地址配置为198.168.100.2，与UPF接口的路由器为R1，R1面向UPF的IP地址配置为192.168.100.3。gNB与路由器R2接口，gNB的IP地址在192.168.300.0/255.255.255.0网段，R1与R2之间为OSPF路由网络。
需要说明的是，图2中展示了一个与UPF直接相邻的路由器R1，在实际部署时，UPF可以与多个路由器R1直接相邻，相应的，该多个路由器R1分别对应各自的OSPF路由网络，即UPF与多个OSPF路由网络间接相邻。图2中展示了一个与OSPF路由网络直接相邻的路由器R2，在实际部署时，OSPF路由网络可以与多个路由器R2直接相邻，相应的，该多个路由器R2分别对应各自的gNB，即OSPF路由网络与多个gNB间接相邻。本申请对路由器R1的数目、OSPF路由网络、路由器R2的数目、gNB的数目不作限定。
根据OSPF协议，UPF可以从直接相邻的路由器R1获得信息，生成路由表，例如可以是表1：
目的地址 下一跳
192.168.300.0/255.255.255.0 192.168.100.3
192.168.400.0/255.255.255.0 192.168.100.3
192.168.500.0/255.255.255.0 192.168.200.2
表1
当UPF需要发送数据包给gNB时，UPF根据该gNB的地址查找路由表，以确定该数据包的下一跳路由器。若路由表中存在该gNB对应的下一跳路由器R1，则与该gNB之间的路由可达。例如，gNB的N3接口的IP地址为192.168.300.21，当UPF需要给该gNB发送数据包时，UPF查找路由表，确定发送给192.168.300.21数据包的下一跳是192.168.100.3，因此，UPF将数据包发送给192.168.100.3，即R1路由器。其中，UPF查找路由表，确定发送给192.168.300.21数据包的下一跳是192.168.100.3，具体为：UPF将192.168.300.21与路由表中目的地址的掩码255.255.255.0进行逻辑与的运算，得到的结果为192.168.300.0，从而确定对应的下一跳为192.168.100.3。相应的，该路由器R1中也有类似的路由表，最终，数据包会被发送给对应的路由器R2，并通过R2路由器发送给该gNB。
当UPF需要发送数据包给gNB时，UPF根据该gNB的地址查找路由表，以确定该数据包的下一跳路由器。若路由表中不存在该gNB对应的下一跳路由器R1，则与该gNB之间的路由不可达。例如，gNB的N3接口的IP地址为192.168.600.5，192.168.600.5与路由表中目的地址的掩码255.255.255.0进行逻辑与的运算后，没有对应的下一跳。
根据上述的说明，只要UPF没有配置缺省路由(即当数据包对应的gNB的路由不可达时，UPF发送该数据包的下一跳地址)，UPF根据路由表即可判断一个gNB与该UPF之间是否路由可达，也可以说是否存在N3接口。
其次，对本申请实施例提供的确定服务区域的方法进行相关的说明：
UPF的服务区域定义为与其接口的基站的服务区域的总和，因此，只要获取与UPF 之间存在N3接口的基站的服务区域，即可根据所有与UPF之间存在接口的基站的服务区域计算出UPF的服务区域大小。SMF的服务区域定义为SMF所控制的UPF的服务区域的总和，因此，只要获取SMF所控制的UPF的服务区域，即可根据所有SMF所控制的UPF的服务区域计算出SMF的服务区域大小。
图3为本申请实施例提供的一种确定服务区域的方法，该方法包括以下步骤：
S301：一个或多个基站将各自的N3接口信息和服务区域信息发送给NRF，以使得NRF获取一个或多个基站的N3接口信息和服务区域信息。
下述以一个或多个基站中的第一基站为例进行说明。若存在其他基站，则其他基站执行相同操作，本申请实施例不作赘述。
其中，第一基站可以与一个或多个UPF之间存在N3接口，第一基站的N3接口信息为第一基站与一个或多个用户面网元之间接口的信息。例如，一个或多个UPF包括第一UPF、第二UPF和第三UPF，则第一基站的N3接口信息包括第一基站与第一UPF之间N3接口的信息、第一基站与第二UPF之间N3接口的信息和第一基站与第三UPF之间N3接口的信息。第一基站的N3接口信息可以为第一基站的一个或多个N3接口的IP地址，例如在图2的示例中，第一基站的N3接口的IP地址可以为192.168.300.21。
可选的，第一基站的N3接口信息还可以包括第一基站的N3接口的第一网络实例标识。其中，第一网络实例标识用于指示第一基站的N3接口所属的网络，例如以地区划分网络，第一网络实例标识指示第一基站的N3接口所属的网络为A地区。相应的，第一网络实例标识可用于区分多个IP地址相同的N3接口(属于不同的基站)，例如第一基站的N3接口信息包括第一基站的N3接口的IP地址192.168.300.21以及指示A地区的第一网络实例标识，第二基站的N3接口的IP地址为192.168.300.21以及指示B地区的第二网络实例标识，根据第一网络实例标识和第二网络实例标识可以区分第一基站和第二基站。
第一基站的服务区域信息为第一基站的服务区域的信息，例如跟踪区标识(TA identity，TAI)和/或小区标识(cell identity，cell ID)。第一基站可以覆盖多个跟踪区和/或多个小区，则服务区域信息中包括多个跟踪区标识和/或多个小区标识。
本申请对第一基站如何将第一基站的N3接口信息和服务区域信息发送给NRF不作限定，即对NRF如何获取第一基站的N3接口信息和服务区域信息不作限定，下述介绍两种NRF获取第一基站的N3接口信息和服务区域信息的方法。
方法一：第一基站直接将第一基站的N3接口信息和服务区域信息发送给NRF，以使得NRF获取第一基站的N3接口信息和服务区域信息。
需要说明的是，该方法需要第一基站支持与NRF之间的服务化接口。若第一基站支持该服务化接口，则第一基站可以在注册到NRF的过程中，在配置文件中包括第一基站的N3接口信息和服务区域信息。
方法二：第一基站通过AMF将第一基站的N3接口信息和服务区域信息发送给NRF，以使得NRF获取第一基站的N3接口信息和服务区域信息。
例如，第一基站在与AMF建立N2链路时(即N2 set up)，第一基站可将第一基站的N3接口信息和服务区域信息发送给AMF。AMF收到第一基站的N3接口信息和服务区域信息后，再将上述信息发送给NRF。
可以理解的是，AMF将第一基站的N3接口信息和服务区域信息发送给NRF，可以通过以下两种方式实现：方式一：AMF根据上述信息生成第一基站的配置文件，并将该第一基站的配置文件注册到NRF中；方式二：AMF将上述信息作为AMF的配置文件的一部分，并将该AMF的配置文件注册到NRF中。
S302：一个或多个UPF在N3接口配置了路由协议之后，通过路由协议获得N3接口的目标网络信息。
下述以一个或多个UPF中的第一UPF为例进行说明。若存在其他UPF，则其他UPF执行相同操作，本申请实施例不作赘述。
其中，目标网络信息为第一UPF可达的路由的信息，包括可达的目的地址信息。可达的目的地址信息可以是一个或多个IP地址、多个基站经过路由网络汇聚后的地址段信息或者地址加掩码信息中的任意一个或多个。多个基站经过路由网络汇聚后的地址段信息例如可以是：针对IPV4，地址段信息可以是地址段首末地址信息；针对IPV6，地址段信息可以是地址前缀加上地址的长度。假设第一UPF的N3接口的路由表如表1所示，则可达的目的地址信息包括192.168.300.0/255.255.255.0、192.168.400.0/255.255.255.0和192.168.500.0/255.255.255.0。
可选的，目标网络信息还包括第一UPF的N3接口的第三网络实例标识。其中，第三网络实例标识用于指示第一UPF的N3接口所属的网络，例如以地区划分网络，第三网络实例标识指示第一UPF的N3接口所属的网络为A地区。
S303：第一UPF将目标网络信息发送给NRF，以使得NRF接收来自第一UPF的目标网络信息。
在一个示例中，第一UPF向NRF查询与其存在N3接口的基站的服务区域信息，将目标网络信息发送给NRF。具体的，第一UPF向NRF发送查询请求，该查询请求包括目标网络信息。
在一个示例中，第一UPF向NRF订阅与其存在N3接口的基站的服务区域信息，将目标网络信息发送给NRF。具体的，第一UPF向NRF发送订阅请求，该订阅请求包括目标网络信息。
可以理解的是，S301与S302-S303之间没有执行顺序，根据实际情况确定。例如：在第一UPF向NRF查询与其存在N3接口的基站的服务区域信息的情况下，S301先执行，S302-S303后执行，即NRF上已有一个或多个基站的服务区域信息情况下，第一UPF向NRF查询与其存在N3接口的基站的服务区域信息；在第一UPF向NRF订阅与其存在N3接口的基站的服务区域信息的情况下，S301与S302-S303之间没有执行顺序。即NRF上可能存在，或可能不存在与该第一UPF存在N3接口的基站的服务区域信息。NRF接收来自第一UPF的订阅请求后，若存在与第一UPF存在N3接口的基站的服务区域信息，则将该基站的服务区域信息发送给第一UPF；若不存在与第一UPF存在N3接口的基站的服务区域信息或存在部分与第一UPF存在N3接口的基站的服务区域信息，则在与第一UPF存在N3接口的基站或其余与第一UPF存在N3接口的基站上线后，NRF将与该第一UPF存在N3接口的基站的服务区域信息发送给该第一UPF。
S304：NRF根据第一基站的N3接口信息和目标网络信息，获知第一UPF的服务区域，其中第一UPF的服务区域包括第一基站的服务区域。
在一个示例中，NRF根据第一基站的N3接口信息和目标网络信息，确定第一基站 与第一UPF之间的路由可达，即确定第一基站与第一UPF之间能够传输数据。
在一个示例中，NRF根据第一基站的N3接口信息和目标网络信息，确定第一基站与第一UPF之间存在N3接口；或者，NRF根据第一基站的N3接口信息和目标网络信息，确定第一UPF查询第一基站的服务区域信息；情况三：NRF根据第一基站的N3接口信息和目标网络信息，确定第一UPF订阅该第一基站的服务区域信息。
需要说明的是，NRF可以先根据第一基站的N3接口信息和目标网络信息，确定第一基站与第一UPF之间的路由可达，进而确定第一基站与第一UPF之间存在N3接口/第一UPF查询该第一基站的服务区域信息/第一UPF订阅该第一基站的服务区域信息。也可以根据第一基站的N3接口信息和目标网络信息，直接确定第一基站与第一UPF之间存在N3接口/第一UPF查询该第一基站的服务区域信息/第一UPF订阅该第一基站的服务区域信息。本申请对此不作限定。
例如，第一基站的N3接口信息包括第一基站的N3接口的IP地址192.168.300.21，目标网络信息包括192.168.300.0/255.255.255.0，NRF将192.168.300.21与255.255.255.0进行逻辑与的运算后，得到的结果为192.168.300.0，则确定第一基站与第一UPF之间的路由可达/第一基站与第一UPF之间存在N3接口/第一UPF查询该第一基站的服务区域信息/第一UPF订阅该第一基站的服务区域信息。
除此之外，若第一基站的N3接口信息包括第一网络实例标识，目标网络信息包括第三网络实例标识，则NRF还需确定第一网络实例标识与第三网络实例标识相同，从而确定第一基站与第一UPF之间的路由可达/第一基站与第一UPF之间存在N3接口/第一UPF查询该第一基站的服务区域信息/第一UPF订阅该第一基站的服务区域信息。
本申请对NRF如何获知第一UPF的服务区域不作限定，下面介绍两种NRF获知第一UPF的服务区域的方法：
方法一:NRF确定第一基站与第一UPF之间的路由可达/第一基站与第一UPF之间存在N3接口/第一UPF查询该第一基站的服务区域信息/第一UPF订阅该第一基站的服务区域信息之后，NRF将第一基站的服务区域加入到第一UPF的服务区域，并将更新后的第一UPF的服务区域信息保存到该第一UPF的配置文件中。
其中，第一UPF的服务区域为第一UPF所接口的基站的服务区域的总和，包括所接口的第一基站的跟踪区或小区，第一UPF的服务区域信息为第一UPF所接口的基站的服务区域信息的总和，包括所接口的第一基站的TAI(s)或cell ID(s)。
对第一UPF所接口的基站执行上述操作后，NRF获知第一UPF的服务区域。
方法二：NRF确定第一基站与第一UPF之间的路由可达/第一基站与第一UPF之间存在N3接口/第一UPF查询该第一基站的服务区域信息/第一UPF订阅该第一基站的服务区域信息之后，接收来自第一UPF的第一UPF的服务区域信息。
具体的，NRF将第一基站的服务区域信息发送给第一UPF。第一UPF将第一基站的服务区域加入到第一UPF的服务区域。对第一UPF所接口的基站执行上述操作后，第一UPF确定第一UPF的服务区域。之后，第一UPF将第一UPF的服务区域信息发送给NRF。NRF接收第一UPF的服务区域信息后，更新第一UPF在NRF中的配置文件。
S305：NRF获知SMF的服务区域。
其中，SMF控制第一UPF。
本申请对NRF如何获知SMF的服务区域不作限定，下面介绍两种NRF获知SMF 的服务区域的方法：
方法一：NRF确定第一UPF为SMF所控制，将第一UPF的服务区域加入到SMF的服务区域。
关于NRF如何确定第一UPF为SMF所控制，可参考S406a中的描述，此处不作赘述。
对SMF所控制的UPF执行上述操作后，NRF获知SMF的服务区域
方法二：NRF接收来自SMF的SMF的服务区域信息。
具体的，NRF或者第一UPF将第一UPF的服务区域信息发送给SMF。SMF将第一UPF的服务区域加入到SMF的服务区域。对SMF所控制的UPF均执行上述操作后，SMF确定SMF的服务区域。之后，SMF将SMF的服务区域信息发送给NRF，SMF的服务区域信息包括SMF所控制的UPF的服务区域信息。
在NRF将第一UPF的服务区域信息发送给SMF的情况下，NRF需要确定第一UPF为SMF所控制或所订阅，关于NRF如何确定第一UPF为SMF所控制或所订阅，可参考S406b中的描述，此处不作赘述。在第一UPF将第一UPF的服务区域信息发送给SMF的情况下，因现有技术中SMF会主动与第一UPF建立连接，不作赘述。
通过上述方法，NRF根据第一基站的N3接口信息和第一UPF的目标网络信息，获知第一基站的服务区域为第一UPF的服务区域的一部分，进而获知第一UPF的服务区域为SMF的服务区域的一部分。对第一UPF所接口的基站执行相同操作，对SMF所控制的UPF执行相同操作，从而确定第一UPF的服务区域和SMF的服务区域。该方法实现了服务区域的自动配置，避免了复杂的人工配置过程，减少了网络配置的工作量。
在图3的基础上，图4为本申请实施例提供的一种确定服务区域的方法，该方法包括以下步骤：
S401：一个或多个基站将各自的N3接口信息和服务区域信息发送给NRF，以使得NRF获取一个或多个基站的N3接口信息和服务区域信息。
下述以一个或多个基站中的第一基站为例进行说明。关于第一基站的N3接口信息、第一基站的服务区域信息以及第一基站如何将第一基站的N3接口信息和服务区域信息发送给NRF的方法，具体参考S301中的描述，不作赘述。
S402：一个或多个UPF在N3接口配置了路由协议之后，通过路由协议获得N3接口的目标网络信息。
具体参考S302中的描述，不作赘述。
S403：第一UPF将目标网络信息发送给NRF，以使得NRF接收来自第一UPF的目标网络信息。
具体参考S303中的描述，不作赘述。
S401与S402-S403之间的顺序关系可参考S303中的描述，此处不作赘述。
S404：NRF根据第一基站的N3接口信息和目标网络信息，确定第一基站与第一UPF之间的路由可达。
具体的，NRF根据第一基站的N3接口信息和目标网络信息，确定第一UPF可以将数据发送给第一基站。例如，第一基站的N3接口信息包括第一基站的N3接口的IP地址192.168.300.21，根据目标网络信息中所包括的192.168.300.0/255.255.255.0，可以确定 第一UPF经过路由器R1，并经过中间的路由网络将数据发送给第一基站。因此，NRF确定第一基站与第一UPF之间的路由可达。若第一基站的N3接口信息包括了第一网络实例标识，并且目标网络信息包括了第三网络实例标识，则NRF在确定第一基站与第一UPF之间存在N3接口时，还需要确定第一网络实例标识与第三网络实例标识相同。
需要说明的是，此步骤以NRF确定第一基站与第一UPF之间的路由可达为例，NRF确定第一基站与第一UPF之间存在N3接口也可参考该步骤，本申请对此不作赘述。
S405：NRF确定第一基站与第一UPF之间的路由可达后，将第一基站的服务区域加入至第一UPF的服务区域。
具体参考S304中方法一的描述，此处不作赘述。
需要说明的是，NRF将S401中的一个或多个基站与第一UPF之间进行了路由可达的确定，最终确定第一基站与第一UPF之间的路由可达。同样的，NRF可以确定其他基站与第一UPF之间的路由可达，对与第一UPF存在N3接口的基站均执行与第一基站一样的动作后，从而确定第一UPF的服务区域。
下述步骤为S305的细化，S305中的方法一详见S406a，S305中的方法二详见S406b-S408b。
S406a：NRF将第一UPF的服务区域加入至SMF的服务区域。
具体的，NRF确定第一UPF为SMF所控制，将第一UPF的服务区域加入到SMF的服务区域。
NRF确定第一UPF为SMF所控制，具体可通过以下方式：第一UPF注册时，向NRF提供一个第一服务区域标识信息，SMF也可以向NRF提供一个第二服务区域标识信息，若NRF确定第一UPF提供的第二服务区域标识信息包括或等于第一服务区域标识信息，则NRF确定第一UPF为SMF控制。其中，SMF可以在注册时向NRF提供一个第二服务区域标识信息，第一服务区域标识信息和第二服务区域标识信息目前均定义为能指示地理位置的字符串，可以理解的是，只要能够指示地理位置的信息，都可以是本申请实施例中的服务区域标识信息，本申请对此不作限定。
需要说明的是，除第一UPF，NRF可以对SMF所控制的UPF均执行上述操作，从而确定SMF的服务区域。其中，NRF可以在SMF初始注册的过程中确定SMF的服务区域，也可以在SMF所控制的UPF注册、删除、服务区域改变时确定SMF的服务区域，以便更新SMF的服务区域。
S406b：NRF将第一UPF的服务区域信息发送给SMF，以使得SMF接收来自NRF的第一UPF的服务区域信息。
在一个示例中，NRF将第一UPF的服务区域信息发送给SMF前，确定第一UPF为SMF所控制。关于NRF如何确定第一UPF为SMF所控制具体可参考S406a中的描述，不作赘述。
在一个示例中，SMF向NRF订阅其所控制的UPF的配置文件的改变通知，则NRF确定第一UPF为SMF所订阅，从而将第一UPF的服务区域信息发送给SMF。具体的，SMF向NRF订阅其所控制的UPF的配置文件的改变通知时，向NRF提供第二服务区域标识信息，NRF根据第一UPF注册时所提供的第一服务区域标识信息，确定第二服务区域标识信息包括第一服务区域标识信息，从而确定SMF订阅第一UPF，将第一UPF的服务区域信息发送给SMF。或者，SMF向NRF订阅其所控制的UPF的配置文件的改变 通知时，向NRF提供其所控制的UPF的列表，NRF确定该列表包括第一UPF，从而将第一UPF的服务区域信息发送给SMF。
需要说明的是，NRF可以在SMF订阅其所控制UPF的配置文件的改变通知之后，将其所控制UPF的服务区域信息均提供给SMF，或者是在SMF所订阅的UPF的配置文件的改变通知之后，将更新后的UPF的服务区域信息提供给SMF，本申请实施例对此不作限定。
可以理解的是，本步骤以第一UPF为例，对SMF所控制或者订阅的其他UPF，NRF同样执行本步骤。
S407b：SMF将第一UPF的服务区域加入至SMF的服务区域。
可以理解的是，对SMF所控制的UPF均执行上述操作后，SMF确定SMF的服务区域。
S408b：可选的，SMF将SMF的服务区域信息发送给NRF，以使得NRF接收SMF的服务区域信息。
其中，SMF的服务区域信息包括SMF所控制的UPF的服务区域信息，NRF接收到SMF的服务区域信息后，将SMF的服务区域信息保存在SMF的配置文件中。
需要说明的是，通过S406a，NRF获知SMF的服务区域之后，可以将SMF的服务区域信息发送给SMF；通过S406a或者S406b-S408b，NRF获知SMF的服务区域之后，可以通知其他网元，例如AMF，以便其他网元进行相应的操作。
通过上述方法，NRF根据第一基站的N3接口信息和第一UPF的目标网络信息，确定第一基站与第一UPF之间的路由可达，获知第一基站的服务区域为第一UPF的服务区域的一部分，进而获知第一UPF的服务区域为SMF的服务区域的一部分。对第一UPF所接口的基站执行相同操作，对SMF所控制的UPF执行相同操作，从而确定第一UPF的服务区域和SMF的服务区域。该方法实现了服务区域的自动配置，避免了复杂的人工配置过程，减少了网络配置的工作量。
在图3和图4的基础上，图5为本申请实施例提供的一种确定服务区域的方法，其中，为方便说明，该方法包括以下步骤：
S501：一个或多个基站将各自的N3接口信息和服务区域信息发送给NRF，以使得NRF获取一个或多个基站的N3接口信息和服务区域信息。
具体参考S301中的描述，不作赘述
S502：第一UPF在N3接口配置了路由协议之后，通过路由协议获得N3接口的目标网络信息。
具体参考S302中的描述，不作赘述。
S503：第一UPF向NRF查询或订阅与其存在N3接口的基站的服务区域信息。
具体的，第一UPF可以通过下述方式，查询与其存在N3接口的基站的服务区域信息：第一UPF向NRF发送查询请求，查询请求包括目标网络信息。
在一个示例中，第一UPF可以在向NRF查询的同时订阅与其存在N3接口的基站的服务区域信息，或者单独进行订阅。
其中，第一UPF可以通过下述方式，订阅与其存在N3接口的基站的服务区域信息：第一UPF向NRF发送订阅请求，订阅请求包括目标网络信息，若后续有新的基站注册， 且NRF判断出该新的基站为第一UPF所订阅，则NRF将该新的基站的服务区域信息发送给第一UPF。
S501与S502-S503之间的顺序关系可参考S503中的描述，此处不作赘述。
S504：NRF确定第一UPF查询或订阅第一基站的服务区域信息。
具体的，NRF根据第一基站的N3接口信息和目标网络信息，确定第一UPF查询或订阅第一基站的服务区域信息。例如：第一基站的N3的接口信息包括第一基站的N3接口的IP地址192.168.300.21，目标网络信息包括192.168.300.0/255.255.255.0，NRF将192.168.300.21与255.255.255.0进行逻辑与的运算后，得到的结果为192.168.300.0，确定第一UPF查询或订阅第一基站的服务区域信息。若第一基站的N3接口信息包括了第一网络实例标识，并且目标网络信息包括了第三网络实例标识，则NRF在确定第一UPF之间存在N3接口时，还需要确定第一网络实例标识与第三网络实例标识相同。
S505：NRF向第一UPF发送第一基站的服务区域信息，以使得第一UPF接收来自NRF的第一基站的服务区域信息。
S506：第一UPF根据第一基站的服务区域信息，将第一基站的服务区域加入到第一UPF的服务区域。
对第一UPF所接口的基站执行上述操作后，第一UPF确定第一UPF的服务区域。
S507：第一UPF将第一UPF的服务区域信息发送给NRF，以使得NRF将更新后的第一UPF的服务区域信息保存到该第一UPF的配置文件中。
S508：NRF或第一UPF将第一UPF的服务区域信息发送给SMF，以使得SMF接收来自NRF或第一UPF的第一UPF的服务区域信息。
NRF将第一UPF的服务区域信息发送给SMF，具体参考S406b中的描述。
S509：SMF将第一UPF的服务区域加入到SMF的服务区域。
具体参考S407b中的描述，不作赘述。
S510：可选的，SMF将SMF的服务区域信息发送给NRF，以使得NRF接收SMF的服务区域信息。
具体参考S408b中的描述，不作赘述。
通过上述方法，NRF根据第一基站的N3接口信息和第一UPF的目标网络信息，确定第一UPF订阅或查询第一基站，从而将第一基站的服务区域信息发送给第一UPF，使得第一UPF确定第一UPF的服务区域。NRF或第一UPF还将第一UPF的服务区域信息提供给SMF，使得SMF确定SMF的服务区域。该方法实现了服务区域的自动配置，避免了复杂的人工配置过程，以及减少了网络配置的工作量。
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，上述网络存储网元、用户面网元、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，但是这种实现不应超过本申请的范围。
本申请实施例可以根据上述方法示例对网络存储网元、用户面网元、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。
例如，上述网元或功能可以通过图6的通信设备实现。如图6所示，该通信设备600可以为网络存储网元、用户面网元、会话管理网元。该通信设备包括处理单元601、通信单元602，可选的，还包括存储单元603。进一步地，通信单元602可以划分为接收单元和发送单元，分别执行接收信息和发送信息的功能。
处理单元601用于对上述网元的动作进行控制，例如支持上述网元执行本申请实施例所提供的方法及步骤。发送单元602用于支持上述网元向其他网络实体发送信息，例如本申请实施例中，上述网元向其他网络实体发送信息的步骤。接收单元603用于支持上述网元接收其他网络实体发送的信息，例如本申请实施例中，上述网元接收其他网络实体发送的信息的步骤。存储单元603用于存储上述网元的数据和代码。
通信装置600可以为网络存储网元，图6a示出了一种网络存储网元610的结构示意图，该网络存储网元包括处理单元611、通信单元612，可选的，还包括存储单元613。
在一个实施例中，网络存储网元610可以用于执行上述方法实施例中网络存储网元的操作，例如：
处理单元611，用于获取第一基站的接口信息和第一基站的服务区域信息，其中，第一基站的接口信息为第一基站与一个或多个用户面网元之间接口的信息，一个或多个用户面网元包括第一用户面网元。具体可参考图3中的S301。
通信单元612，用于接收来自第一用户面网元的目标网络信息，其中，目标网络信息为与第一用户面网元之间可达的路由的信息。具体可参考图3中的S303。
处理单元611，用于根据第一基站的接口信息和目标网络信息，获知第一基站的服务区域为第一用户面网元的服务区域的一部分。具体可参考图3中的S304。
进一步地，该网络存储网元可用于执行图3、4或5中相应的步骤，具体可参考上述方法实施例中的描述，例如：
处理单元611，可以用于执行S305、S401、S404、S405、S406a、S501、S504，具体可参考上述步骤中的描述。
通信单元612，可以用于执行S403、S406b、S408b、S503、S505、S507、S508、S510，具体可参考上述步骤中的描述。
通信装置600还可以为用户面网元，图6b示出了一种用户面网元620的结构示意图，该用户面网元包括处理单元621、通信单元622，可选的，还包括存储单元623。
在一个实施例中，用户面网元620可以用于执行上述方法实施例中第一用户面网元的操作，例如：
通信单元622，用于向网络存储网元发送目标网络信息，其中，目标网络信息为与第一用户面网元之间可达的路由的信息，用于确定与第一用户面网元之间的路由可达的一个或多个基站。具体可参考图3中的S303。
以及接收来自网络存储网元的一个或多个基站的服务区域信息。具体可参考图3中的S304。
处理单元621，用于根据所述一个或多个基站的服务区域信息，确定所述第一用户面 网元的服务区域。具体可参考图3中的S304。
进一步地，该用户面网元可用于执行图3、4或5或6中相应的步骤，具体可参考上述方法实施例中的描述，例如：
处理单元621，可以用于执行S302、S402、S502、S506，具体可参考上述步骤中的描述。
通信单元622，可以用于执行S403、S503、S505、S507、S508，具体可参考上述步骤中的描述。
通信装置600还可以为会话管理网元，图6c示出了一种会话管理网元630的结构示意图，该会话管理网元包括处理单元631，可选的，还包括存储单元633。
在一个实施例中，会话管理网元630可以用于执行上述方法实施例中会话管理网元的操作，例如：
处理单元631，用于获取一个或多个用户面网元的服务区域信息，一个或多个用户面网元为会话管理网元控制的网元。具体可参考图3中的S305。
以及根据所述一个或多个用户面网元的服务区域信息，确定所述会话管理网元的服务区域。具体可参考图3中的S305。
进一步地，该会话管理网元可用于执行图3、4或5或6中相应的步骤，具体可参考上述方法实施例中的描述，例如：
处理单元631，可以用于执行S407b、S509，具体可参考上述步骤中的描述。
通信单元632，可以用于执行S406b、S408b、S508、S510，具体可参考上述步骤中的描述。
当上述的处理单元601、611、621或631可以为一个或多个处理器，通信单元602、612、622或632可以为一个或多个收发器，存储单元603、613、623或633可以一个或多个为存储器时，本申请实施例涉及的网络存储网元、用户面网元或会话管理网元可以为图7所示的结构。
参阅图7所示，该通信设备700包括：处理器701、收发器702，可选的，可以包括存储器703以及总线704。处理器701、收发器702以及存储器703通过总线704连接。其中，处理器701例如可以是中央处理器(central processing unit，CPU)，通用处理器，数字信号处理器(digital signal processor，DSP)，专用集成电路(application-specific integrated circuit，ASIC)，现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或其任意组合。其可以实现或执行结合本申请所描述的各个示例性的逻辑方框、模块和电路。处理器也可以是实现计算功能的组合，例如包括一个或多个微处理器组合，DSP和微处理器的组合等等。总线704可以是外设部件互联标准(peripheral component interconnect，简称PCI)总线或扩展工业标准结构(extended industry standard architecture，简称EISA)总线等。总线可以分为地址总线、数据总线、控制总线等。为便于表示，图7中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
本申请实施例还提供的一种芯片系统800，包括至少一个处理器801、接口电路802，处理器801和接口电路802相连。
处理器801可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器801中的硬件的集成逻辑电路或者软件形式的指令完成。 上述的处理器801可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
接口电路802可以完成数据、指令或者信息的发送或者接收，处理器801可以利用接口电路802接收的数据、指令或者其它信息，进行加工，可以将加工完成信息通过接口电路802发送出去。
可选的，芯片系统还包括存储器803，存储器803可以包括只读存储器和随机存取存储器，并向处理器提供操作指令和数据。存储器803的一部分还可以包括非易失性随机存取存储器(NVRAM)。
可选的，存储器803存储了可执行软件模块或者数据结构，处理器803可以通过调用存储器存储的操作指令(该操作指令可存储在操作系统中)，执行相应的操作。
可选的，芯片系统可以使用在本申请实施例涉及的会话管理网元、用户面网元或第三方设备中。可选的，接口电路802用于执行图3至图5所示的实施例中网络存储网元、用户面网元或会话管理网元的接收和发送的步骤。处理器801用于执行图3至图5所示的实施例中的网络存储网元、用户面网元或会话管理网元处理的步骤。存储器803用于存储图3至图5所示的实施例中的网络存储网元、用户面网元或会话管理网元的数据和指令。
本申请实施例还提供了一种计算机可读存储介质。上述方法实施例中描述的方法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。如果在软件中实现，则功能可以作为一个或多个指令或代码存储在计算机可读介质上或者在计算机可读介质上传输。计算机可读介质可以包括计算机存储介质和通信介质，还可以包括任何可以将计算机程序从一个地方传送到另一个地方的介质。存储介质可以是可由计算机访问的任何可用介质。
作为一种可选的设计，计算机可读介质可以包括RAM，ROM，EEPROM，CD-ROM或其它光盘存储器，磁盘存储器或其它磁存储设备，或可用于承载的任何其它介质或以指令或数据结构的形式存储所需的程序代码，并且可由计算机访问。而且，任何连接被适当地称为计算机可读介质。例如，如果使用同轴电缆，光纤电缆，双绞线，数字用户线(DSL)或无线技术(如红外，无线电和微波)从网站，服务器或其它远程源传输软件，则同轴电缆，光纤电缆，双绞线，DSL或诸如红外，无线电和微波之类的无线技术包括在介质的定义中。如本文所使用的磁盘和光盘包括光盘(CD)，激光盘，光盘，数字通用光盘(DVD)，软盘和蓝光盘，其中磁盘通常以磁性方式再现数据，而光盘利用激光光学地再现数据。上述的组合也应包括在计算机可读介质的范围内。
本申请实施例还提供了一种计算机程序产品。上述方法实施例中描述的方法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。如果在软件中实现，可以全部或者部分得通过计算机程序产品的形式实现。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上述计算机程序指令时，全部或部分地产生按照上述方法实施例中描述的流程或功能。上述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其它可编程装置。
以上的具体实施方式，对本申请的目的、技术方案和有益效果进行了进一步详细说 明，所应理解的是，以上仅为本申请的具体实施方式而已，并不用于限定本申请的保护范围，凡在本申请的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本申请的保护范围之内。

Claims (31)

  1. 一种确定服务区域的方法，其特征在于，包括：
    网络存储网元获取第一基站的接口信息和所述第一基站的服务区域信息，其中，所述第一基站的接口信息为所述第一基站与一个或多个用户面网元之间接口的信息，所述一个或多个用户面网元包括第一用户面网元；
    所述网络存储网元接收来自所述第一用户面网元的目标网络信息，其中，所述目标网络信息为所述第一用户面网元可达的路由的信息；
    所述网络存储网元根据所述第一基站的接口信息和所述目标网络信息，获知所述第一用户面网元的服务区域，其中，所述第一用户面网元的服务区域包括所述第一基站的服务区域。
  2. 如权利要求1所述的方法，其特征在于，所述网络存储网元根据所述第一基站的接口信息和所述目标网络信息，获知所述第一用户面网元的服务区域包括：
    所述网络存储网元根据所述接口信息和所述目标网络信息，确定所述第一基站与所述第一用户面网元之间的路由可达；
    所述网络存储网元将所述第一基站的服务区域加入至所述第一用户面网元的服务区域。
  3. 如权利要求1所述的方法，其特征在于，所述网络存储网元根据所述第一基站的接口信息和所述目标网络信息，获知所述第一用户面网元的服务区域包括：
    所述网络存储网元根据所述接口信息和所述目标网络信息，确定所述第一基站与所述第一用户面网元之间的路由可达；
    所述网络存储网元将所述第一基站的服务区域信息发送给所述第一用户面网元；
    所述网络存储网元接收来自所述第一用户面网元的所述第一用户面网元的服务区域信息。
  4. 如权利要求1-3任一项所述的方法，其特征在于，还包括：
    所述网络存储网元获知会话管理网元的服务区域，其中，所述会话管理网元为控制所述第一用户面网元的网元，所述会话管理网元的服务区域包括所述第一用户面网元的服务区域。
  5. 如权利要求4所述的方法，其特征在于，所述网络存储网元获知所述会话管理网元的服务区域包括：
    所述网络存储网元将所述第一用户面网元的服务区域加入至所述会话管理网元的服务区域。
  6. 如权利要求4所述的方法，其特征在于，所述网络存储网元获知所述会话管理网元的服务区域包括：
    所述网络存储网元将所述第一用户面网元的服务区域信息发送给所述会话管理网元；
    所述网络存储网元接收来自所述会话管理网元的所述会话管理网元的服务区域信息。
  7. 如权利要求4-6任一项所述的方法，其特征在于，还包括：
    所述网络存储网元接收来自所述第一用户面网元的第一服务区域标识信息，所述第 一服务区域标识信息用于指示所述第一用户面网元对应的服务区域；
    所述网络存储网元接收来自所述会话管理网元的第二服务区域标识信息，所述第二服务区域标识信息用于指示所述会话管理网元对应的服务区域；
    若确定所述第二服务区域标识信息包括所述第一服务区域标识信息，则所述网络存储网元确定所述第一用户面网元为所述会话管理网元所控制；或者
    若确定所述第二服务区域标识信息包括所述第一服务区域标识信息，则所述网络存储网元确定所述第一用户面网元为所述会话管理网元所订阅。
  8. 一种确定服务区域的方法，其特征在于，包括：
    第一用户面网元向网络存储网元发送目标网络信息，其中，所述目标网络信息为所述第一用户面网元可达的路由的信息，用于确定与所述第一用户面网元之间的路由可达的一个或多个基站；
    所述第一用户面网元接收来自所述网络存储网元的所述一个或多个基站的服务区域信息；
    所述第一用户面网元根据所述一个或多个基站的服务区域信息，确定所述第一用户面网元的服务区域。
  9. 如权利要求8所述的方法，其特征在于，还包括：
    所述第一用户面网元将所述第一用户面网元的服务区域信息发送给所述网络存储网元。
  10. 如权利要求8或9所述的方法，其特征在于，还包括：
    所述第一用户面网元将所述第一用户面网元的服务区域信息发送给会话管理网元，其中，所述会话管理网元为控制所述第一用户面网元的网元。
  11. 一种确定服务区域的方法，其特征在于，包括：
    会话管理网元获取一个或多个用户面网元的服务区域信息，所述一个或多个用户面网元为所述会话管理网元控制的网元；
    所述会话管理网元根据所述一个或多个用户面网元的服务区域信息，确定所述会话管理网元的服务区域。
  12. 如权利要求11所述的方法，其特征在于，还包括：
    所述会话管理网元将所述会话管理网元的服务区域信息发送给网络存储网元。
  13. 如权利要求11或12所述的方法，其特征在于，所述会话管理网元获取所述一个或多个用户面网元的服务区域信息包括：
    所述会话管理网元获取来自所述一个或多个用户面网元的所述一个或多个用户面网元的服务区域信息；或者
    所述会话管理网元获取来自网络存储网元的所述一个或多个用户面网元的服务区域信息。
  14. 一种网络存储网元，其特征在于，包括处理单元、通信单元；
    所述处理单元，用于获取第一基站的接口信息和所述第一基站的服务区域信息，其中，所述第一基站的接口信息为所述第一基站与一个或多个用户面网元之间接口的信息，所述一个或多个用户面网元包括第一用户面网元；
    所述通信单元，用于接收来自所述第一用户面网元的目标网络信息，其中，所述目标网络信息为与所述第一用户面网元之间可达的路由的信息；
    所述处理单元，用于根据所述第一基站的接口信息和所述目标网络信息，获知所述第一用户面网元的服务区域，其中，所述第一用户面网元的服务区域包括所述第一基站的服务区域。
  15. 如权利要求14所述的网络存储网元，其特征在于，所述处理单元用于根据所述第一基站的接口信息和所述目标网络信息，获知所述第一用户面网元的服务区域包括：
    所述处理单元用于根据所述接口信息和所述目标网络信息，确定所述第一基站与所述第一用户面网元之间的路由可达；
    以及将所述第一基站的服务区域加入至所述第一用户面网元的服务区域。
  16. 如权利要求14所述的网络存储网元，其特征在于，所述处理单元用于根据所述第一基站的接口信息和所述目标网络信息，获知所述第一用户面网元的服务区域包括：
    所述处理单元用于根据所述接口信息和所述目标网络信息，确定所述第一基站与所述第一用户面网元之间的路由可达；
    所述处理单元用于通过所述通信单元将所述第一基站的服务区域信息发送给所述第一用户面网元；
    所述处理单元用于通过所述通信单元接收来自所述第一用户面网元的所述第一用户面网元的服务区域信息。
  17. 如权利要求14-16任一项所述的网络存储网元，其特征在于，所述处理单元还用于获知会话管理网元的服务区域，其中，所述会话管理网元为控制所述第一用户面网元的网元，所述会话管理网元的服务区域包括所述第一用户面网元的服务区域。
  18. 如权利要求17所述的网络存储网元，其特征在于，所述处理单元用于获知所述会话管理网元的服务区域包括：
    所述处理单元用于将所述第一用户面网元的服务区域加入至所述会话管理网元的服务区域。
  19. 如权利要求17所述的网络存储网元，其特征在于，所述处理单元用于获知所述会话管理网元的服务区域包括：
    所述处理单元用于通过所述通信单元将所述第一用户面网元的服务区域信息发送给所述会话管理网元；
    所述处理单元用于通过所述通信单元接收来自所述会话管理网元的所述会话管理网元的服务区域信息。
  20. 如权利要求17-19任一项所述的网络存储网元，其特征在于，
    所述通信单元还用于接收来自所述第一用户面网元的第一服务区域标识信息，所述第一服务区域标识信息用于指示所述第一用户面网元对应的服务区域；
    所述通信单元还用于接收来自所述会话管理网元的第二服务区域标识信息，所述第二服务区域标识信息用于指示所述会话管理网元对应的服务区域；
    若所述处理单元还用于确定所述第二服务区域标识信息包括所述第一服务区域标识信息，则所述处理单元还用于确定所述第一用户面网元为所述会话管理网元所控制；或者
    若所述处理单元还用于确定所述第二服务区域标识信息包括所述第一服务区域标识信息，则所述处理单元还用于确定所述第一用户面网元为所述会话管理网元所订阅。
  21. 一种用户面网元，其特征在于，包括：处理单元和通信单元；
    所述通信单元，用于向网络存储网元发送目标网络信息，其中，所述目标网络信息为所述第一用户面网元可达的路由的信息，用于确定与所述第一用户面网元之间的路由可达的一个或多个基站；
    所述通信单元，用于接收来自所述网络存储网元的所述一个或多个基站的服务区域信息；
    所述处理单元，用于根据所述一个或多个基站的服务区域信息，确定所述第一用户面网元的服务区域。
  22. 如权利要求21所述的用户面网元，其特征在于，所述通信单元还用于将所述第一用户面网元的服务区域信息发送给所述网络存储网元。
  23. 如权利要求21或22所述的用户面网元，其特征在于，所述通信单元还用于将所述第一用户面网元的服务区域信息发送给会话管理网元，其中，所述会话管理网元为控制所述第一用户面网元的网元。
  24. 一种会话管理网元，其特征在于，包括处理单元；
    所述处理单元，用于获取一个或多个用户面网元的服务区域信息，所述一个或多个用户面网元为所述会话管理网元控制的网元；
    以及根据所述一个或多个用户面网元的服务区域信息，确定所述会话管理网元的服务区域。
  25. 如权利要求24所述的会话管理网元，其特征在于，还包括通信单元；
    所述通信单元用于将所述会话管理网元的服务区域信息发送给网络存储网元。
  26. 如权利要求24或25所述的会话管理网元，其特征在于，所述处理单元用于获取一个或多个用户面网元的服务区域信息包括：
    所述处理单元用于获取来自所述一个或多个用户面网元的所述一个或多个用户面网元的服务区域信息；或者
    所述处理单元用于获取来自网络存储网元的所述一个或多个用户面网元的服务区域信息。
  27. 如权利要求1-7任一项所述的方法或14-20任一项所述的网络存储网元，其特征在于，
    所述第一基站的接口信息包括所述第一基站与所述第一用户面网元之间接口的互联网协议IP地址。
  28. 如权利要求1-7任一项所述的方法或14-20任一项所述的网络存储网元，其特征在于，
    所述第一基站的服务区域信息包括所述第一基站的跟踪区标识和/或小区标识。
  29. 如权利要求1-10任一项所述的方法、14-20任一项所述的网络存储网元或21-23任一项所述的用户面网元，其特征在于，所述目标网络信息包括可达目的地址信息，所述可达目的地址信息包括以下任意一项或多项：
    与所述网络存储网元之间路由可达的一个或多个互联网协议IP地址；
    与所述网络存储网元之间路由可达的一个或多个地址段；
    与所述网络存储网元之间路由可达的一个或多个IP地址加掩码。
  30. 一种确定服务区域的系统，其特征在于，包括权利要求14-20任一项所述的网络存储网元、权利要求21-23任一项所述的用户面网元、权利要求24-26任一项所述的会 话管理网元中的任意多个。
  31. 一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如权利要求1至13任一项所述的方法。
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