WO2023280166A1 - 跨区域通信方法及设备、计算机可读存储介质 - Google Patents

跨区域通信方法及设备、计算机可读存储介质 Download PDF

Info

Publication number
WO2023280166A1
WO2023280166A1 PCT/CN2022/103950 CN2022103950W WO2023280166A1 WO 2023280166 A1 WO2023280166 A1 WO 2023280166A1 CN 2022103950 W CN2022103950 W CN 2022103950W WO 2023280166 A1 WO2023280166 A1 WO 2023280166A1
Authority
WO
WIPO (PCT)
Prior art keywords
group
information
entity
smf
cross
Prior art date
Application number
PCT/CN2022/103950
Other languages
English (en)
French (fr)
Inventor
陈琳
丰孝英
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2023280166A1 publication Critical patent/WO2023280166A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels

Definitions

  • the present disclosure relates to the communication field, and in particular, to a cross-region communication method, a cross-region communication device, and a computer-readable storage medium.
  • the overall architecture of the fifth generation communication system (5G), as shown in Figure 6, includes: access and mobility management function entity (AMF, Access and Mobility Management Function), session management function entity (SMF, Session Management Function), User plane functional entity (UPF, User Plane Function), unified data management entity (UDM, Unified Data Management), and policy control functional entity (PCF, Policy Control Function), the connection of the user plane is user equipment (UE, User Equipment) To the radio access network (RAN, Radio Access Network), then to the UPF, and then to the data network, the connection of the control plane is from UE to AMF to SMF.
  • AMF access and mobility management function entity
  • SMF Session Management Function
  • UPF User Plane Function
  • UDM User Plane Function
  • UDM Unified Data Management
  • PCF Policy Control Function
  • 5G local area network uses 5G system to support the development of 5G LAN services.
  • 5G LAN services with 5G capabilities allow a group of user equipment (UE, User Equipment) accessed under the same SMF to communicate with each other This group is also called a virtual network (VN, Virtual Network) group.
  • VN Virtual Network
  • an embodiment of the present disclosure provides a cross-area communication method for a first entity, including:
  • SMS session management function
  • an embodiment of the present disclosure provides a cross-region communication method for SMF, including:
  • the present disclosure provides a cross-region communication device, including a memory, a processor, a computer program stored on the memory and operable on the processor, and configured to implement the processor and the A data bus connecting and communicating between memories, when the computer program is executed by the processor, implements the cross-area communication method as described in the first aspect and the second aspect.
  • the present disclosure provides a computer-readable storage medium, the computer-readable storage medium stores at least one computer program, and the at least one computer program can be executed by at least one processor to implement the first aspect and The cross-region communication method described in the second aspect.
  • FIG. 1 is a flow chart of a cross-area communication method provided by the present disclosure for a first entity.
  • Fig. 2 is a flow chart of processing a first query request by a first entity provided by the present disclosure.
  • Fig. 3 is a flow chart of processing a second query request by a first entity provided in the present disclosure.
  • Fig. 4 is a flowchart of a cross-area communication method provided by the present disclosure for a session management function (SMF).
  • SMS session management function
  • Fig. 5 is a flow chart of processing the second query request by the SMF provided by the present disclosure.
  • Fig. 6 is an overall architecture diagram of the fifth generation communication system provided by the present disclosure.
  • Fig. 7 is a schematic diagram of a virtual network (VN) group accessed under only one SMF provided by the present disclosure.
  • VN virtual network
  • Fig. 8 is a schematic diagram of communication between remote local area networks provided by the present disclosure.
  • Fig. 9 is a block diagram of relationships among functional entities provided by the disclosed example.
  • Fig. 10 is a block diagram of the integration relationship among functional entities provided by the example of the present disclosure.
  • Fig. 11 is a functional block diagram of a first entity provided by the present disclosure.
  • Fig. 12 is a flowchart of a first entity registering with a network storage function (NRF) provided by the present disclosure.
  • NRF network storage function
  • Fig. 13 is a flow chart of initial access of a 5G local area network session provided by an example of the present disclosure.
  • Fig. 14 is a flow chart of a non-subscription cooperative update of a 5G local area network session provided by an example of the present disclosure.
  • Fig. 15 is a schematic diagram of modules of a cross-area communication device provided by the present disclosure.
  • the current fifth generation communication system (5G) protocol restricts that a virtual network group must be under a session management functional entity (SMF) Access, access to the user equipment (UE) in the same virtual network group under the same SMF matches the message according to the packet detection rule (PDR, Packet Detection Rule) and packet forwarding rule (FAR, Forwarding Action Rule) and communication, and then communicate through the tunnel between UPFs, but it is impossible to provide group services across SMF service areas, which also makes SMF load sharing and disaster recovery functions impossible to implement, limiting the capacity and reliability of virtual network group services .
  • PDR Packet Detection Rule
  • FAR Forwarding Action Rule
  • This disclosure proposes a cross-area communication method, in which SMFs in different areas can publish and centralize the group information of virtual network groups to the first entity for management, and establish a mapping between SMFs in different areas and virtual network groups relationship, and dynamically establish a group switching network for SMFs in different regions with the same virtual network group ID, which not only realizes cross-regional communication between virtual network groups, but also simplifies the complexity of network operation and maintenance.
  • an embodiment of the present disclosure provides a cross-region communication method for a first entity. As shown in FIG. 1 , the cross-region communication method includes the following steps S110 to S130.
  • step S110 group information of a virtual network (VN) group of each local area network is received.
  • VN virtual network
  • step S120 information of a session management function (SMF) that sends each of the group information is determined.
  • SMF session management function
  • step S130 a mapping relationship between each of the group information and its corresponding SMF is established.
  • group information of cross-SMF virtual network groups is uniformly managed by the first entity.
  • the group information includes group identifiers and path information.
  • the LANs belonging to the same virtual network group are set with the same group ID. Therefore, in the subsequent query process, it can be identified that each 5G LAN and its corresponding SMF belong to the same virtual network group according to the same group ID.
  • Each SMF will locally collect the information connected to the 5G local area network of the SMF, including but not limited to at least one of the following information:
  • Group-level tunnel information that is, tunnel information between UPFs in the same virtual network group, such as N19 tunnel;
  • the IP address of the UE connected to the SMF when there are many users, the IP address can also be expressed as the range of the IP address segment;
  • Each SMF sends locally collected 5G local area network information as local group information to the first entity.
  • the first entity obtains the group information from each SMF, and can establish a mapping relationship between each group information and each corresponding SMF according to the information of the SMF that sends each group information.
  • the first entity can logically attribute the group information of each 5G local area network with the same group identifier to the same virtual network group for management. Therefore, on the first entity, the group information of multiple 5G local area networks with the same group identifier is aggregated together to form the group information of this virtual network group, which constitutes the data basis for dynamically forming a group switching network across regions . Furthermore, in the cross-regional 5G communication service, the first entity may provide data support such as group information query and subscription for relevant network elements at the control plane such as the access and mobility management function entity (AMF) and SMF.
  • AMF access and mobility management function entity
  • acquiring a serviceable SMF includes steps S141 to S144.
  • step S141 a first query request is received.
  • step S142 the group information carried in the first query request is determined.
  • step S143 the SMF corresponding to the group information carried in the first query request is determined according to the mapping relationship.
  • step S144 the queried SMF information is sent to the device that sent the first query request.
  • the group user equipment of the 5G local area network When the group user equipment of the 5G local area network initially accesses, it will first send a protocol data unit (PDU, Protocol Data Unit) session establishment request to the AMF.
  • the AMF obtains the group information of the group user equipment according to the local configuration or the information subscribed on the unified data management entity (UDM). Then, according to the group information, a first query request is sent to the first entity to query the list of SMFs that can serve.
  • PDU Protocol Data Unit
  • UDM unified data management entity
  • the first entity receives the first query request from the AMF, extracts the group information from the request message, and determines the corresponding SMF according to the mapping relationship between the group information and the SMF, and sends the information of the queried SMF to the sender of the first query Requested AMF. If multiple corresponding SMFs can be queried, the SMF list queried is sent to the AMF that sends the first query request; it can also be optimized according to the mapping relationship between the data network name (DNN, Data Network Name) and the group information and the SMF An SMF that sends the information of the preferred SMF to the AMF that sends the first query request.
  • DNN Data Network Name
  • the AMF After the AMF acquires the available SMF information from the first query request, it can initiate a PDU session establishment request to the available SMF, and perform the subsequent session establishment process.
  • querying group information may include steps S151 to S154.
  • step S151 a second query request is received.
  • step S152 the identification information of the user equipment (UE) carried in the second query request is determined.
  • step S153 determine the group information of the VN group to which the UE belongs according to the identification information of the UE;
  • step S154 the determined group information is returned to the device sending the second query request, so that the device sending the second query request determines path information corresponding to the UE, the group information includes A group identifier, tunnel information between user plane function entities (UPFs) in the group, and an address range, where the addresses of UEs included in the VN group fall within the address range.
  • the group information includes A group identifier, tunnel information between user plane function entities (UPFs) in the group, and an address range, where the addresses of UEs included in the VN group fall within the address range.
  • UPFs user plane function entities
  • the AMF After the AMF obtains the information of the available SMF from the Network Repository Function (NRF, Network Repository Function) or the first entity, it initiates a PDU session establishment request to the available SMF. At this point, the SMF needs to judge whether the PDU session establishment request is to create a new PDU session.
  • the SMF interacts with the UDM to obtain the session subscription data. If the subscription data contains the group affiliation information corresponding to the UE, it will obtain the first entity according to the local settings or query the NRF, and initiate a query to the first entity of the VN to which the UE belongs. A second query request for the group information of the group.
  • the subscription data on the UDM will store the affiliation relationship between the user equipment and the corresponding group, it will not save the path information. Therefore, it is necessary to find the first entity that manages the virtual network group corresponding to the user equipment, from The path information corresponding to the user equipment at the data forwarding level is queried from the group information of the virtual network group in the first entity.
  • the first entity After receiving the second query request, the first entity will extract the identification information of the UE from the second query request information, such as the IP address or MAC address of the UE, and determine the group of the virtual network group to which the UE that initiated the session request belongs information, and then send the determined group information to the SMF sending the second query request, so that the SMF determines the path information corresponding to the UE.
  • the second query request information such as the IP address or MAC address of the UE
  • the group information sent by the first entity to the SMF includes tunnel information between UPFs to provide a forwarding path for packet forwarding at the subsequent service data forwarding level. Therefore, the path information includes tunnel information between UPFs.
  • the group information sent by the first entity to the SMF may also include the condition of the tunnel load to obtain a path with a lower load. For example, according to the N19 tunnel load condition, the link with a lower load may be returned, or Returns a list of tunnels to be selected by SMF.
  • the SMF After the SMF obtains the result of the second query request, it sends a session establishment response message to the AMF.
  • the processing after this step does not require the participation of the first entity, and will not be repeated here.
  • the first entity sends a registration request to a network storage function (NRF), where the registration request carries the current group information received by the first entity.
  • NRF network storage function
  • the first entity When one first entity cannot manage all virtual network groups, there will be more than one first entity in the network, and each entity will manage several virtual network groups. If the first entity located in other regions is accessed according to business needs, the local first entity cannot be found, so the participation of the NRF is required.
  • the first entity registers with the NRF, carrying a list of virtual network groups managed by the first entity, and the NRF stores and saves the registration information of the first entity for query.
  • first entities providing services
  • they can register with the NRF, so that other network functional entities can find a suitable first entity.
  • the process for the first entity to register with the NRF includes steps 201 to 203 .
  • Step 201 the first entity registers with the NRF, carrying a list of virtual network groups managed by the first entity, including but not limited to IP address range, MAC address list and other information, so as to facilitate discovery by other network elements.
  • step 202 the NRF stores the registration information of the first entity.
  • step 203 the NRF returns a registration response to the first entity.
  • the operations that the first entity of the present disclosure may also perform include at least one of the following steps:
  • a tunnel topology between UPFs in the VN group is generated.
  • the first entity may include but not limited to the following eight functions: Some of the functions have been introduced above, and will not be repeated here:
  • Session information registration Provide external registration function of group session information
  • Subscription management provide external group information subscription and unsubscription management functions
  • Query function Provide the query function of group information to the outside world;
  • Session information storage storage, keeping alive and persistence of group session information
  • Group management group configuration supported by the system, and decision-making associated session information to generate path topology;
  • NRF registration function responsible for the functions of the first entity registering with NRF, de-registering and network element keeping alive;
  • Subscription record management maintenance of subscription records, management of subscription change notifications;
  • an embodiment of the present disclosure provides a cross-region communication method for an SMF. As shown in FIG. 4 , the cross-region communication method includes step S210.
  • step S210 the group information of the local VN group is sent to the first entity, the group information includes the group identifier, the tunnel information between UPFs in the group, and the address range, and the VN group The addresses of the included UEs fall within the address range.
  • Each SMF will locally collect the information connected to the 5G local area network of the SMF, including but not limited to at least one of the following information:
  • Group-level tunnel information that is, tunnel information between UPFs in the same virtual network group, such as N19 tunnel;
  • the IP address of the UE connected to the SMF when there are many users, the IP address can also be expressed as the range of the IP address segment;
  • the MAC address of the UE connected to the SMF The MAC address of the UE connected to the SMF
  • Each SMF sends locally collected 5G local area network information as local group information to the first entity.
  • the first entity obtains the group information from each SMF, and can establish a mapping relationship between each group information and each corresponding SMF according to the information of the SMF that sends each group information.
  • the cross-region communication method is applied on the SMF, as shown in Figure 5, the cross-region communication method further includes the steps S221 to S224.
  • a first entity corresponding to the UE is determined in response to a protocol data unit (PDU) session establishment request of an access and mobility management function (AMF).
  • PDU protocol data unit
  • AMF access and mobility management function
  • step S222 a second query request is sent to the determined first entity.
  • step S223 path information corresponding to the UE is determined according to the group information obtained in the second query request.
  • step S224 a response message is sent to the AMF.
  • the AMF After the AMF acquires the information of the available SMF from the NRF or the first entity, it initiates a PDU session establishment request to the available SMF. At this point, the SMF needs to judge whether the PDU session establishment request is to create a new PDU session.
  • the SMF interacts with the UDM to obtain the session subscription data. If the subscription data contains the group affiliation information corresponding to the UE, it will obtain the first entity according to the local settings or query the NRF, and initiate a query to the first entity of the VN to which the UE belongs. A second query request for the group information of the group.
  • the first entity After receiving the second query request, the first entity will extract the identification information of the UE from the second query request information, such as the IP address or MAC address of the UE, and determine the group of the virtual network group to which the UE that initiated the session request belongs information, and then send the determined group information to the SMF sending the second query request, so that the SMF determines the path information corresponding to the UE.
  • the second query request information such as the IP address or MAC address of the UE
  • the group information sent by the first entity to the SMF includes tunnel information between UPFs to provide a forwarding path for packet forwarding at the subsequent service data forwarding level. Therefore, the path information includes tunnel information between UPFs.
  • the group information sent by the first entity to the SMF may also include the condition of the tunnel load, so as to obtain a path with a lower load, for example, the link with a lower load may be returned according to the condition of the N19 tunnel load, or Returns a list of tunnels to be selected by SMF.
  • the SMF After the SMF obtains the result of the second query request, it sends a session establishment response message to the AMF.
  • the processing after this step does not require the participation of the first entity, and will not be repeated here.
  • the second query request is sent to the determined first entity in response to an error message reported by the UPF, where the error message reported by the UPF includes that the destination UE is unreachable;
  • the UPF During service message forwarding, if the UPF cannot find the target UE according to the target IP address or MAC address, or after delivery to the next hop, (R)AN or the peer UPF returns an error indication, then the UPF will report to the SMF to which it belongs error message.
  • the SMF when the SMF receives the error message reported by the UPE, it will also initiate the second query request.
  • the second query request in addition to carrying the group information, it also carries the destination IP address or MAC address of the forwarded message.
  • the relationship between functional entities in the cross-regional communication method provided by the present disclosure may include:
  • Each SMF uses the 5G local area network information collected locally, including the group ID of the virtual network group, the IP address range of the access user, the MAC address range of the access user, and the N19 tunnel between UPFs in the group as the local
  • the group information is sent to the first entity; the first entity obtains the group information from each SMF, and according to the information of the SMF that sends each group information, the relationship between each group information and the corresponding SMF can be established. Mapping relations.
  • the first entity registers with the NRF, carrying a list of virtual network groups managed by the first entity, including but not limited to IP address range, MAC address list and other information, so as to facilitate discovery by other network elements.
  • the first entity logically assigns the group information of each 5G local area network with the same group identifier to the same virtual network group for management. Therefore, on the first entity, the group information of multiple 5G local area networks with the same group identifier is aggregated together to form the group information of this virtual network group, which constitutes the data for dynamically establishing a group switching network across regions Base. Furthermore, in the cross-regional 5G communication service, the first entity can provide data support such as query and subscription of group information for relevant network elements at the control plane such as AMF and SMF.
  • the SMF can query the NRF for the first entity to which the address belongs according to the IP address or MAC address, and find the SMF corresponding to the UE to be queried according to the found group information on the first entity, so that Discover each other at the SMF level and find the tunnel between the corresponding UPFs.
  • the relationship between the functional entities in the cross-area communication method provided in this example may be a modification of the relationship between the functional entities in Example 1.
  • the first entity does not exist independently, but is integrated with the SMF.
  • the first entity may also be integrated with a policy control function entity (PCF), or integrated with a binding function entity (BSF, Binding Support Function).
  • PCF policy control function entity
  • BSF binding function entity
  • this example provides a flow chart of the initial access of a 5G LAN session, and the access process includes steps 301 to 322.
  • step 301 the 5G LAN group user UE1 starts up and attaches, and sends a PDU session establishment request message to the AMF.
  • the AMF obtains the group information of UE1 according to the local configuration or the information subscribed on the UDM, and queries the NRF for the SMF that can serve, carrying the slice, DNN, location and group information.
  • step 303 the NRF returns a list of available SMFs.
  • the AMF may also query the first entity for SMF binding information; the first entity may return a preferred SMF according to the DNN and group information, and when the SMF fails abnormally, the first entity removes the preferred SMF and selects The second-choice SMF will be the preferred SMF, and this record will be kept.
  • the first entity and the NRF can be combined to reduce investment in equipment.
  • step 304 AMF selects SMF1 to serve this session, and sends a PDU session creation message (Nsmf_PDUSession_CreateSMContext Request) to SMF1.
  • Nsmf_PDUSession_CreateSMContext Request a PDU session creation message
  • step 305 after SMF1 receives the session creation request message from AMF, if it judges that the session creation is a new PDU session, SMF interacts with UDM to obtain session subscription data, and if there is group information in the subscription data, then according to the local configuration Or discover the first entity from NRF.
  • step 306 SMF1 initiates a group information query request to the first entity.
  • the first entity returns group information, such as information about the accessed UPF tunnel, corresponding IP information, corresponding MAC information, and the like.
  • the link with a lower load may be returned, or the tunnel list may be returned, and the SMF may select it.
  • step 308 SMF1 sends a PDU session establishment response message (Nsmf_PDUSession_CreateSMContext Response) to AMF.
  • Nsmf_PDUSession_CreateSMContext Response a PDU session establishment response message
  • the SMF performs the UPF selection process according to the location of the user equipment and the PCC rule information; for IP access, it also needs to allocate an address for the UE, obtain charging and control policies, and so on.
  • SMF1 sends an N4 session establishment request (N4Session Establishment Request) to UPF1.
  • step 310 UPF1 establishes a forwarding tunnel, and replies an N4 Session Establishment Response (N4Session Establishment Response) to SMF1.
  • N4Session Establishment Response N4 Session Establishment Response
  • step 311 SMF1 sends a N1N2 transfer message (Namf_Communication_N1N2Message Transfer) message to AMF, and brings information such as user address, tunnel information, and control strategy obtained by SMF1 to UE and RAN through AMF.
  • N1N2 transfer message (Namf_Communication_N1N2Message Transfer) message
  • the AMF interacts with the RAN and the UE, mainly bringing the information obtained by the SMF1 to the UE and the RAN, and at the same time establishes an N3 tunnel on the RAN, and sends the tunnel information to the AMF.
  • step 313 the AMF sends a PDU session update request message (Nsmf_PDUSession_UpdateSMContext Request) message to the SMF, and brings the N3 tunnel information established by the (R)AN to the SMF.
  • Nsmf_PDUSession_UpdateSMContext Request PDU session update request message
  • step 314 SMF1 interacts with UPF1, that is, SMF1 sends an N4 session update request to UPF1, and brings the N3 tunnel information established on the RAN brought by AMF to UPF1, and UPF1 updates the tunnel information.
  • step 315 UPF1 returns an N4 session update success response.
  • step 316 SMF1 sends a response to AMF, registers session binding information with UDM/first entity respectively, and subscribes to group change notifications.
  • step 317 if there is a group user equipment UE2 connected to SMF2/UPF2, and SMF2 has subscribed to the first entity for group information change notification, the first entity notifies SMF2 of group topology change, carrying UE1 information.
  • step 318 SMF2 updates the group-level tunnel update instruction to UPF2, and forwards the packet whose destination address is UE1 to UPF1.
  • step 319 UE1 initiates an intra-group multicast or broadcast message.
  • step 320 UPF1 searches for users in the group, copies and forwards.
  • step 321 if there is a user across the UPF, continue forwarding through the N19 tunnel.
  • step 322 UPF2 sends the packet received by N19 to UE2.
  • the first entity can be built into the SMF or BSF to reduce the signaling interaction of registration and discovery;
  • this example provides a flow chart of cooperative updating of a 5G local area network session in a non-subscription mode, and the process includes steps 401 to 409 .
  • step 401 UE2 sends a message to UE1.
  • step 402 UPF2 fails to find the target user according to the target IP address or MAC address, or after delivering to the next hop, the (R)AN or the peer UPF returns an error indication.
  • step 403 UPF2 reports report (Report) information to SMF2.
  • step 404 SMF2 initiates a user query request to the first entity, carrying a destination IP address or MAC address and group information.
  • step 405 the first entity returns the UPF1 tunnel information where the destination user UE1 is located.
  • step 406 SMF2 initiates a group-level tunnel update request to UPF2, that is, SMF2 sends an N4 session update request to UPF2, carrying N19 tunnel information of the peer UPF.
  • step 407 UPF2 returns an N4 session update response.
  • step 408 UPF2 forwards the message to UPF1 through the N19 tunnel.
  • step 409 after receiving the message, UPF1 delivers the message to UE1 according to the destination address.
  • This disclosure proposes a cross-area communication method, in which SMFs in different areas can publish and centralize the group information of virtual network groups to the first entity for management, and establish a mapping between SMFs in different areas and virtual network groups relationship, and dynamically establish a group switching network for SMFs in different regions with the same virtual network group ID, which not only realizes cross-regional communication between virtual network groups, but also simplifies the complexity of network operation and maintenance.
  • an embodiment of the present disclosure provides a cross-area communication device, including:
  • At least one processor 501 (only one is shown in Figure 15)
  • Memory 502 on which at least one computer program is stored, when at least one computer program is executed by at least one processor, at least one processor is made to implement the above-mentioned cross-region communication method;
  • At least one I/O interface 503 is connected between the processor 501 and the memory 502 and is configured to implement information exchange between the processor 501 and the memory 502 .
  • Processor 501 is a device with data processing capability, including but not limited to central processing unit (CPU) etc.
  • memory 502 is a device with data storage capability, including but not limited to random access memory (RAM, more specifically SDRAM, DDR etc.), read-only memory (ROM), electrified erasable programmable read-only memory (EEPROM), flash memory (FLASH);
  • I/O interface (read-write interface) 503 is connected between processor 501 and memory 502, can realize processing Information interaction between the device 501 and the memory 502, including but not limited to a data bus (Bus).
  • Buss data bus
  • the processor 501 , the memory 502 and the I/O interface 503 are connected to each other through a bus 504 , and are further connected to other components of the computing device.
  • a computer-readable storage medium stores at least one computer program, and the at least one computer program can be executed by at least one processor to realize cross-regional communication as described above method.
  • the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical components. Components cooperate to execute.
  • Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit circuit.
  • a processor such as a central processing unit, digital signal processor, or microprocessor
  • Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media).
  • computer storage media includes both volatile and nonvolatile media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. permanent, removable and non-removable media.
  • Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, magnetic disk storage or other magnetic storage devices, or can Any other medium used to store desired information and which can be accessed by a computer.
  • communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

Landscapes

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

Abstract

本公开提供了一种跨区域通信方法，用于第一实体，包括：接收各个局域网的虚拟网络(VN)群组的群组信息；确定发送各个所述群组信息的会话管理功能实体(SMF)的信息；以及建立各个所述群组信息与各自对应的SMF之间的映射关系。本公开还提供了一种跨区域通信设备和一种计算机可读存储介质。

Description

跨区域通信方法及设备、计算机可读存储介质
相关申请的交叉引用
本申请要求于2021年7月7日提交的中国专利申请NO.202110765397.3的优先权，该中国专利申请的内容通过引用的方式整体合并于此。
技术领域
本公开涉及通信领域，尤其涉及跨区域通信的方法、跨区域通信设备和计算机可读存储介质。
背景技术
第五代通信系统(5G)的总体架构，如图6所示，包括：接入和移动性管理功能实体(AMF，Access and Mobility Management Function)、会话管理功能实体(SMF，Session Management Function)、用户面功能实体(UPF，User Plane Function)，统一数据管理实体(UDM，Unified Data Management)、以及策略控制功能实体(PCF，Policy Control Function)，用户面的连接为用户设备(UE，User Equipment)到无线接入网(RAN，Radio Access Network)，然后到UPF，再接入到数据网络，控制面的连接为UE到AMF到SMF。
5G局域网(LAN，Local Area Network)使用5G系统来支持5G LAN服务的开展。在这种情况下，具有5G能力(例如：性能、长距离接入、移动性、安全性等)的5G LAN服务允许同一SMF下接入的一组用户设备(UE，User Equipment)可以在彼此之间进行通信，这个群组也称为虚拟网络(VN，Virtual Network)群组。
公开内容
第一方面，本公开实施例提供了一种跨区域通信方法，用于第 一实体，包括：
接收各个局域网的虚拟网络(VN)群组的群组信息；
确定发送各个所述群组信息的会话管理功能实体(SMF)的信息；以及
建立各个所述群组信息与各自对应的SMF之间的映射关系。
第二方面，本公开实施例提供了一种跨区域通信方法，用于SMF，包括：
将本地的VN群组的群组信息发送给第一实体，所述群组信息包括群组标识、群组中UPF之间的隧道信息、以及地址范围，所述VN群组所包括的UE的地址落入所述地址范围内。
第三方面，本公开提供了一种跨区域通信设备，包括存储器、处理器、存储在所述存储器上并可在所述处理器上运行的计算机程序以及配置为实现所述处理器和所述存储器之间的连接通信的数据总线，所述计算机程序被所述处理器执行时实现如第一方面和第二方面中所述的跨区域通信方法。
第四方面，本公开提供了一种计算机可读存储介质，所述计算机可读存储介质存储有至少一个计算机程序，所述至少一个计算机程序可被至少一个处理器执行，以实现第一方面和第二方面中所述的跨区域通信方法。
附图说明
图1是本公开提供的跨区域通信方法用于第一实体的流程图。
图2是本公开提供的第一实体处理第一查询请求的流程图。
图3是本公开提供的第一实体处理第二查询请求的流程图。
图4是本公开提供的跨区域通信方法用于会话管理功能实体(SMF)的流程图。
图5是本公开提供的SMF处理第二查询请求的流程图。
图6是本公开提供的第五代通信系统的总体架构图。
图7是本公开提供的一个虚拟网络(VN)群组只在一个SMF下接入的示意图。
图8是本公开提供的异地局域网之间进行通信的示意图。
图9是本公开实例提供的各功能实体之间的关系框图。
图10是本公开实例提供的各功能实体之间的集成关系框图。
图11是本公开提供的第一实体的功能框图。
图12是本公开提供的第一实体向网络存储功能实体(NRF)注册的流程图。
图13是本公开实例提供的5G局域网类型会话初始接入的流程图。
图14是本公开实例提供的5G局域网类型会话非订阅方式协作更新的流程图。
图15是本公开提供的一种跨区域通信设备的模块示意图。
具体实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本公开，并不用于限定本公开。
在后续的描述中，使用用于表示元件的诸如“模块”、“部件”或“单元”的后缀仅为了有利于本公开的说明，其本身没有特有的意义。因此，“模块”、“部件”或“单元”可以混合地使用。
如图7所示，为了保证本地交换以及用户面功能实体(UPF)间可以互相通信，目前第五代通信系统(5G)协议限定一个虚拟网络群组必须在一个会话管理功能实体(SMF)下接入，接入在同一SMF下一个虚拟网络群组中的用户设备(UE)按照报文检测规则(PDR，Packet Detection Rule)和报文转发规则(FAR，Forwarding Action Rule)对报文进行匹配和通信，再通过UPF之间的隧道进行通信，但无法实现跨SMF服务区提供群组服务，也造成了SMF负荷分担以及容灾功能无法实施，限制了虚拟网络群组业务的容量以及可靠性。如图8所示，假如需要实现异地网络之间进行通信，相关技术可以在不同的5G局域网(LAN)中分别建立各自的群组，然后在数据网络(DN，Data Network)侧部署跳板服务器，在两个群组之间通过打隧道的方式进行互通，这样不但增加了额外的设备投入，而且网络运维很不方便。
本公开提出了一种跨区域通信方法，该方法可以由不同区域的SMF把虚拟网络群组的群组信息发布并集中到第一实体中管理，为不同区域的SMF与虚拟网络群组建立映射关系，为虚拟网络群组标识相同的不同区域的SMF动态建立群组交换网络，不但实现了虚拟网络群组跨区域的互相通信，而且简化了网络运维的复杂性。
第一方面，本公开实施例提供了一种跨区域通信方法，用于第一实体，如图1所示，所述跨区域通信方法包括如下步骤S110至S130。
在步骤S110中，接收各个局域网的虚拟网络(VN)群组的群组信息。
在步骤S120中，确定发送各个所述群组信息的会话管理功能实体(SMF)的信息。
在步骤S130中，建立各个所述群组信息与各自对应的SMF之间的映射关系。
本公开所提供的跨区域通信方法，通过第一实体统一管理跨SMF的虚拟网络群组的群组信息。在群组信息中，包括群组标识和路径信息。归属于同一虚拟网络群组的局域网设置相同的群组标识，因此，在后续的查询过程中，可以根据相同的群组标识来识别各个5G局域网及其对应的SMF归属于同一虚拟网络群组。
各个SMF会在本地收集接入到本SMF的5G局域网的信息，包括但不限于以下信息中的至少一种：
组级隧道信息，即同一虚拟网络群组内各个UPF之间的隧道信息，例如N19隧道；
接入到SMF下的UE的IP地址，在用户量较多时，IP地址也可以表示为IP地址段的范围；
接入到SMF下的UE的媒体访问控制(MAC)地址；
隧道容量负载信息；
SMF上的黑白名单；以及
应用描述。
各个SMF将本地收集到的5G局域网的信息，作为本地的群组信息，发送到第一实体。第一实体获取到来自各个SMF的群组信息，根 据发送各个群组信息的SMF的信息，就可以建立各个群组信息与各自对应的SMF之间的映射关系。
同时，第一实体可以根据各个SMF发送的群组信息，将群组标识相同的各个5G局域网的群组信息从逻辑上归属到同一个虚拟网络群组中进行管理。于是，在第一实体上，群组标识相同的多个5G局域网的群组信息汇总到一起就形成了此虚拟网络群组的群组信息，构成了跨区域动态组建群组交换网络的数据基础。进而，在跨区域的5G通信业务中，第一实体可以为接入和移动性管理功能实体(AMF)、SMF等控制层面的相关网元提供群组信息的查询、订阅等数据支持。
在本公开中，对如何查询可以服务的SMF的方法不做特殊的限定。在一些实施方式中，如图2所示，获取可以服务的SMF包括步骤S141至S144。
在步骤S141中，接收第一查询请求。
在步骤S142中，确定所述第一查询请求中携带的群组信息。
在步骤S143中，根据所述映射关系确定所述第一查询请求中携带的群组信息所对应的SMF。
在步骤S144中，将查询到的SMF的信息发送给发送所述第一查询请求的设备。
5G局域网的群组用户设备初始接入时，首先会向AMF发送协议数据单元(PDU，Protocol Data Unit)会话建立请求。AMF根据本地配置或者统一数据管理实体(UDM)上签约的信息，获取到群组用户设备的群组信息。然后，再根据该群组信息向第一实体发出第一查询请求，查询可以服务的SMF列表。
第一实体收到AMF的第一查询请求，从请求消息中提取群组信息，并根据群组信息与SMF的映射关系确定所对应的SMF，将查询到的SMF的信息发送给发送第一查询请求的AMF。如果可以查询到多个对应的SMF，则将查询到的SMF列表发送给发送第一查询请求的AMF；也可以根据数据网络名称(DNN,Data Network Name)以及群组信息与SMF的映射关系优选一个SMF，将被优选的SMF的信息发送给发送第一查询请求的AMF。
AMF从第一查询请求中获取到可用的SMF信息之后，就可以向该可用的SMF发起PDU会话建立请求，进行后续的会话建立过程。
在本公开中，对如何查询群组信息的方法不做特殊的限定。在一些实施方式中，如图3所示，查询群组信息可以包括步骤S151至S154。
在步骤S151中，接收第二查询请求。
在步骤S152中，确定所述第二查询请求中携带的用户设备(UE)的标识信息。
在步骤S153中，根据所述UE的标识信息确定所述UE所属的VN群组的群组信息；
在步骤S154中，将确定的群组信息返回给发送所述第二查询请求的设备，以使发送所述第二查询请求的设备确定与所述UE对应的路径信息，所述群组信息包括群组标识、群组中用户面功能实体(UPF)之间的隧道信息、以及地址范围，所述VN群组所包括的UE的地址落入所述地址范围内。
AMF从网络存储功能实体(NRF，Network Repository Function)或第一实体获取到可用的SMF的信息之后，向该可用的SMF发起PDU会话建立请求。此时，SMF需要判断此PDU会话建立请求是不是新建PDU会话。SMF与UDM交互获取到会话签约数据，如果签约数据中有UE对应的群组归属信息，则根据本地的设置或者向NRF查询得到第一实体，并向此第一实体发起查询该UE所属的VN群组的群组信息的第二查询请求。
需要说明的是，UDM上的签约数据中虽然会保存用户设备与对应群组的归属关系，但不会保存路径信息，因此需要找到管理该用户设备对应的虚拟网络群组的第一实体，从第一实体中该虚拟网络群组的群组信息中查询到数据转发层面的与该用户设备对应的路径信息。
接收到第二查询请求后，第一实体会从该第二查询请求信息中提取UE的标识信息，例如UE的IP地址或者MAC地址，确定发起会话请求的UE所属的虚拟网络群组的群组信息，然后将确定的群组信息发送给发送所述第二查询请求的SMF，以使此SMF确定与UE对应 的路径信息。
在第一实体发送给SMF的群组信息中包括UPF之间的隧道信息，为后续业务数据转发层面的报文转发提供转发路径，因此，路径信息包括UPF之间的隧道信息。
除此之外，在第一实体发送给SMF的群组信息中还可以包括隧道负载的情况，以得到负载较低的路径，例如可以根据N19隧道负载情况，返回负载较低的链路，或者返回隧道列表，由SMF进行选择。
SMF得到第二查询请求的结果后向AMF发送会话建立响应消息，此步骤之后的处理过程不需第一实体参与，在此不再展开赘述。
在一些实施方式中，第一实体向网络存储功能实体(NRF)发送注册请求，所述注册请求携带有当前第一实体所接收到的群组信息。
当一个第一实体不能管理所有的虚拟网络群组时，网络中会存在不止一个第一实体，每个实体会管理若干虚拟网络群组。如果根据业务需要访问位于其他区域的第一实体，而本地的第一实体是无法查找到的，因此需要NRF的参与。第一实体向NRF注册，携带第一实体所管理的虚拟网络群组的列表，NRF存储保存第一实体的注册信息，以备查询。
如图12所示，假如有多个第一实体提供服务的话，可以向NRF注册，便于其它网络功能实体发现合适的第一实体。第一实体向NRF注册的过程包括步骤201至203。
步骤201，第一实体向NRF注册，携带第一实体所管理的虚拟网络群组的列表，包括但不限于IP地址范围、MAC地址列表等信息，便于其它网元发现。
步骤202，NRF存储第一实体的注册信息。
步骤203，NRF向第一实体返回注册响应。
在一些实施方式中，本公开第一实体还可以进行的操作包括以下步骤中的至少一者：
根据预定的组网，设置VN群组的群组信息；
将接收到的各个局域网的VN群组的群组信息存储在本地；
当所述群组信息发生变更时，根据发生变更的VN群组的群组标 识，向带有相同群组标识的局域网的SMF通知所述变更；以及
根据所述群组信息，生成VN群组内UPF之间的隧道拓扑。
如图11所示，第一实体可以包含但不限于以下八种功能：部分功能已在前文中介绍过，在此不再赘述：
1)会话信息注册：对外提供群组会话信息的注册功能；
2)订阅管理：对外提供群组信息的订阅以及去订阅管理功能；
3)查询功能：对外提供群组信息的查询功能；
4)会话信息存储：群组会话信息的存储、保活以及持久化；
5)群组管理：系统支持的群组配置，并决策关联的会话信息，生成路径拓扑；
6)NRF注册功能：负责第一实体向NRF注册、去注册以及网元保活等功能；
7)订阅记录管理：订阅记录的维护，订阅的变更通知管理；以及
8)变更通知功能：侦测到群组信息变更后，发起到订阅方式的变更通知。
上述八种功能中部分功能已在前文中介绍过，在此不再赘述。
第二方面，本公开实施例提供了一种跨区域通信方法，用于SMF，如图4所示，所述跨区域通信方法包括步骤S210。
在步骤S210中，将本地的VN群组的群组信息发送给第一实体，所述群组信息包括群组标识、群组中UPF之间的隧道信息、以及地址范围，所述VN群组所包括的UE的地址落入所述地址范围内。
各个SMF会在本地收集接入到本SMF的5G局域网的信息，包括但不限于以下信息中的至少一种：
组级隧道信息，即同一虚拟网络群组内各个UPF之间的隧道信息，例如N19隧道；
接入到SMF下的UE的IP地址，在用户量较多时，IP地址也可以表示为IP地址段的范围；
接入到SMF下的UE的MAC地址；
隧道容量负载信息；
SMF上的黑白名单；以及
应用描述。
各个SMF将本地收集到的5G局域网的信息，作为本地的群组信息，发送到第一实体。第一实体获取到来自各个SMF的群组信息，根据发送各个群组信息的SMF的信息，就可以建立各个群组信息与各自对应的SMF之间的映射关系。
在一些实施方式中，与第一方面中跨区域通信方法中的第二查询请求相对应，所述跨区域通信方法应用在SMF上，如图5所示，所述跨区域通信方法还包括步骤S221至S224。
在步骤S221中，响应于接入和移动性管理功能实体(AMF)的协议数据单元(PDU)会话创建请求，确定UE所对应的第一实体。
在步骤S222中，向确定的第一实体发出第二查询请求。
在步骤S223中，根据所述第二查询请求得到的群组信息，确定与所述UE相对应的路径信息。
在步骤S224中，发送响应消息给所述AMF。
AMF从NRF或第一实体获取到可用的SMF的信息之后，向该可用的SMF发起PDU会话建立请求。此时，SMF需要判断此PDU会话建立请求是不是新建PDU会话。SMF与UDM交互获取到会话签约数据，如果签约数据中有UE对应的群组归属信息，则根据本地的设置或者向NRF查询得到第一实体，并向此第一实体发起查询该UE所属的VN群组的群组信息的第二查询请求。
接收到第二查询请求后，第一实体会从该第二查询请求信息中提取UE的标识信息，例如UE的IP地址或者MAC地址，确定发起会话请求的UE所属的虚拟网络群组的群组信息，然后将确定的群组信息发送给发送所述第二查询请求的SMF，以使此SMF确定与UE对应的路径信息。
在第一实体发送给SMF的群组信息中包括UPF之间的隧道信息，为后续业务数据转发层面的报文转发提供转发路径，因此，路径信息包括UPF之间的隧道信息。
除此之外，在第一实体发送给SMF的群组信息中还可以包括隧 道负载的情况，以得到负载较低的路径，例如可以根据N19隧道负载情况，返回负载较低的链路，或者返回隧道列表，由SMF进行选择。
SMF得到第二查询请求的结果后向AMF发送会话建立响应消息，此步骤之后的处理过程不需第一实体参与，在此不再展开赘述。
在一些实施方式中，响应于UPF上报的错误消息，向确定的第一实体发出所述第二查询请求，所述UPF上报的错误消息包括目的UE不可达；
根据所述第二查询请求得到的群组信息，确定与所述目的UE对应的路径信息；以及
向所述UPF更新所述UE对应的路径信息。
在业务报文转发过程中，如果UPF根据目标IP地址或MAC地址无法找到目标UE，或者投递到下一跳后，(R)AN或者对端UPF返回错误指示，那么UPF会向所属的SMF上报错误信息。
与第一方面中跨区域通信方法中的第二查询请求相对应，在SMF收到UPE上报的错误消息时，也会发起第二查询请求。在该第二查询请求中，除了携带群组信息之外，还会携带转发报文的目的IP地址或者MAC地址。
根据第二查询请求从第一实体得到群组信息，确定与所述目的UE对应的UPF路径信息，并向上报错误信息的UPF更新查询得到的隧道信息。按照新的路径进行报文转发。
下面结合四个实例对本公开第一个方面以及第二个方面所提供的跨区域通信方法进行介绍。
实例一
如图9所示，在本实例中，本公开提供的跨区域通信方法中各功能实体之间的关系可以包括：
各个SMF将本地收集到的5G局域网的信息，包括虚拟网络群组的群组标识、接入用户的IP地址范围、接入用户的MAC地址范围、群组内UPF之间的N19隧道，作为本地的群组信息，发送到第一实体；第一实体获取到来自各个SMF的群组信息，根据发送各个群组信息的 SMF的信息，就可以建立各个群组信息与各自对应的SMF之间的映射关系。
第一实体向NRF注册，携带第一实体所管理的虚拟网络群组的列表，包括但不限于IP地址范围、MAC地址列表等信息，便于其它网元发现。
同时，第一实体根据各个SMF发送的群组信息，将群组标识相同的各个5G局域网的群组信息从逻辑上归属到同一个虚拟网络群组中进行管理。于是，在第一实体上，群组标识相同的多个5G局域网的群组信息，汇总到一起就形成了此虚拟网络群组的群组信息，构成了跨区域动态组建群组交换网络的数据基础。进而，在跨区域的5G通信业务中，第一实体可以为AMF、SMF等控制层面的相关网元提供群组信息的查询、订阅等数据支持。
当多个第一实体提供服务时，SMF可以根据IP地址或MAC地址向NRF查询该地址归属的第一实体，并且根据找到的第一实体上的群组信息找到待查询UE对应的SMF，从而在SMF层面发现对方并找到所对应的UPF之间的隧道。
实例二
如图10所示，在本实例中，本实例提供的跨区域通信方法中各功能实体之间的关系可以是实例一中各功能实体之间的关系的变形。
在本实例中，第一实体并不是单独存在，而是与SMF集成在一起。
在本实例中，第一实体还可以与策略控制功能实体(PCF)集成，或者与绑定功能实体(BSF，Binding Support Function)集成在一起。
除以上列举的集成方式外，所有与相关功能实体所做的集成都在本公开保护范围之内。
实例三
如图13所示，本实例提供了5G局域网类型会话初始接入的流 程图，该接入流程包括步骤301至322。
在步骤301中，5G LAN群组用户UE1开机附着，向AMF发送PDU会话建立请求消息。
在步骤302中，AMF根据本地配置或者UDM上签约的信息，获取到UE1的群组信息，向NRF查询可以服务的SMF，携带切片、DNN、位置以及群组信息。
在步骤303中，NRF返回可用的SMF列表。
在一些实施方式中，AMF也可以向第一实体查询SMF绑定信息；第一实体可以根据DNN以及群组信息优选一个SMF返回，当该SMF宕机异常时，第一实体去除首选SMF，选择次选SMF作为优选SMF，并保持此记录。
在一些实施方式中，第一实体可以与NRF合并设置，以减少设备的投入。
在步骤304中，AMF选择SMF1服务本次会话，并向SMF1发送PDU会话创建消息(Nsmf_PDUSession_CreateSMContext Request)。
在步骤305中，SMF1收到AMF的会话创建请求消息后，若判断此次会话创建是新建PDU会话，则SMF与UDM交互获取会话签约数据，如果签约数据里面有群组信息，则根据本地配置或者从NRF中发现第一实体。
在步骤306中，SMF1向第一实体发起群组信息查询请求。
在步骤307中，第一实体返回群组信息，如接入的UPF隧道信息、对应的IP信息、对应的MAC信息等等。
在一些实施方式中，可以根据N19隧道负载情况，返回负载较低的链路，或者返回隧道列表，由SMF进行选择。
在步骤308中，SMF1向AMF发送PDU会话建立响应消息(Nsmf_PDUSession_CreateSMContext Response)。
在步骤309中，SMF根据用户设备的位置以及PCC规则信息，执行UPF选择过程；对于IP接入，还需要为UE分配地址，获取计费、控制策略等等。SMF1向UPF1发送N4会话建立请求(N4Session Establ isment Request)。
在步骤310中，UPF1建立转发隧道，并回复N4会话建立响应(N4Session Establ isment Response)给SMF1。
在步骤311中，SMF1向AMF发送N1N2中转消息(Namf_Communication_N1N2Message Transfer)消息，将SMF1获得的用户地址、隧道信息、控制策略等信息通过AMF带给UE与RAN。
在步骤312中，AMF与RAN、UE之间交互，主要将SMF1获得的信息带给UE与RAN，同时RAN上建立N3隧道，并将隧道信息带给AMF。
在步骤313中，AMF向SMF发送PDU会话更新请求消息(Nsmf_PDUSession_UpdateSMContext Request)消息，将(R)AN建立的N3隧道信息带给SMF。
在步骤314中，SMF1与UPF1交互，即SMF1向UPF1发送N4会话更新请求，将AMF带过来的RAN上建立的N3隧道信息带给UPF1，UPF1更新隧道信息。
在步骤315中，UPF1返回N4会话更新成功响应。
在步骤316中，SMF1向AMF发送响应，并向UDM/第一实体分别注册会话绑定信息，并订阅群组变化通知。
在步骤317中，假如已经有群组用户设备UE2接入在SMF2/UPF2，且SMF2向第一实体订阅过群组信息变更通知，则第一实体通知SMF2群组拓扑变化，携带UE1信息。
在步骤318中，SMF2向UPF2更新组级隧道更新指示，对于目标地址是UE1的报文，转发到UPF1。
在步骤319中，UE1发起群组内组播或广播报文。
在步骤320中，UPF1查找群组内的用户，复制转发。
在步骤321中，假如有跨UPF的用户，则通过N19隧道继续转发。
在步骤322中，UPF2把N19收到的报文，发送给UE2。
在一些实施方式，第一实体可以内置到SMF或BSF中，减少注册及发现的信令交互；
实例四
如图14所示，本实例提供了5G局域网类型会话非订阅方式协作更新的流程图，该流程包括步骤401至409。
在步骤401中，UE2发送报文给UE1。
在步骤402中，UPF2根据目标IP地址或MAC地址无法找到目标用户，或者投递到下一跳后，(R)AN或者对端UPF返回error(错误)指示。
在步骤403中，UPF2给SMF2上报报告(Report)信息。
在步骤404中，SMF2向第一实体发起用户查询请求，携带目的IP地址或者MAC地址以及群组信息。
在步骤405中，第一实体返回目的用户UE1所在的UPF1隧道信息。
在步骤406中，SMF2向UPF2发起组级隧道更新请求，即SMF2向UPF2发送N4会话更新请求，携带对端UPF的N19隧道信息。
在步骤407中，UPF2返回N4会话更新响应。
在步骤408中，UPF2通过N19隧道转发报文给UPF1。
在步骤409中，UPF1收到报文后，根据目标地址将该报文投递给UE1。
本公开提出了一种跨区域通信方法，该方法可以由不同区域的SMF把虚拟网络群组的群组信息发布并集中到第一实体中管理，为不同区域的SMF与虚拟网络群组建立映射关系，为虚拟网络群组标识相同的不同区域的SMF动态建立群组交换网络，不但实现了虚拟网络群组跨区域的互相通信，而且简化了网络运维的复杂性。
第三方面，参照图15，本公开实施例提供一种跨区域通信设备，包括：
至少一个处理器501；(图15中仅示出一个)
存储器502，其上存储有至少一个计算机程序，当至少一个计算机程序被至少一个处理器执行时，使得至少一个处理器实现如上述的跨区域通信方法；以及
至少一个I/O接口503，连接在所述处理器501与所述存储器502之间，配置为实现所述处理器501与所述存储器502的信息交互。
处理器501为具有数据处理能力的器件，包括但不限于中央处理器(CPU)等；存储器502为具有数据存储能力的器件，包括但不限于随机存取存储器(RAM，更具体如SDRAM、DDR等)、只读存储器(ROM)、带电可擦可编程只读存储器(EEPROM)、闪存(FLASH)；I/O接口(读写接口)503连接在处理器501与存储器502间，能实现处理器501与存储器502的信息交互，包括但不限于数据总线(Bus)等。
在一些实施方式中，处理器501、存储器502和I/O接口503通过总线504相互连接，进而与计算设备的其它组件连接。
第四方面，一种计算机可读存储介质，所述计算机可读存储介质存储有至少一个计算机程序，所述至少一个计算机程序可被至少一个处理器执行，以实现如前所述的跨区域通信方法。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、设备中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。
在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些物理组件或所有物理组件可以被实施为由处理器(如中央处理器、数字信号处理器或微处理器)执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、 ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。
以上参照附图说明了本公开的示例实施例，并非因此局限本公开的权利范围。本领域技术人员不脱离本公开的范围和实质内所作的任何修改、等同替换和改进，均应在本公开的权利范围之内。

Claims (10)

  1. 一种跨区域通信方法，用于第一实体，包括：
    接收各个局域网的虚拟网络(VN)群组的群组信息；
    确定发送各个所述群组信息的会话管理功能实体(SMF)的信息；以及
    建立各个所述群组信息与各自对应的SMF之间的映射关系。
  2. 根据权利要求1所述的跨区域通信方法，还包括：
    接收第一查询请求；
    确定所述第一查询请求中携带的群组信息；
    根据所述映射关系确定所述第一查询请求中携带的群组信息所对应的SMF；以及
    将查询到的SMF的信息发送给发送所述第一查询请求的设备。
  3. 根据权利要求1所述的跨区域通信方法，还包括：
    接收第二查询请求；
    确定所述第二查询请求中携带的用户设备(UE)的标识信息；
    根据所述UE的标识信息确定所述UE所属的VN群组的群组信息；以及
    将确定的群组信息发送给发送所述第二查询请求的设备，以使发送所述第二查询请求的设备确定与所述UE对应的路径信息，其中，所述群组信息包括群组标识、群组中用户面功能实体(UPF)之间的隧道信息、以及地址范围，其中，所述VN群组所包括的UE的地址落入所述地址范围内。
  4. 根据权利要求1所述的跨区域通信方法，还包括：
    向网络存储功能实体(NRF)发送注册请求，所述注册请求携带有当前第一实体所接收到的群组信息。
  5. 根据权利要求1至4中任意一项的所述跨区域通信方法，还包括以下步骤中的至少一者：
    根据预定的组网，设置VN群组的群组信息；
    将接收到的各个局域网的VN群组的群组信息存储在本地；
    当所述群组信息发生变更时，根据发生变更的VN群组的群组标识，向带有相同群组标识的局域网的SMF通知所述变更；以及
    根据所述群组信息，生成VN群组内UPF之间的隧道拓扑。
  6. 一种跨区域通信方法，用于SMF，包括：
    将本地的VN群组的群组信息发送给第一实体，其中，所述群组信息包括群组标识、群组中UPF之间的隧道信息、以及地址范围，其中，所述VN群组所包括的UE的地址落入所述地址范围内。
  7. 根据权利要求6所述的跨区域通信方法，还包括：
    响应于接入和移动性管理功能实体(AMF)的协议数据单元(PDU)会话创建请求，确定UE所对应的第一实体；
    向确定的第一实体发出第二查询请求；
    根据所述第二查询请求得到的群组信息，确定与所述UE相对应的路径信息；以及
    发送响应消息给所述AMF。
  8. 根据权利要求6所述的跨区域通信方法，还包括：
    响应于UPF上报的错误消息，向确定的第一实体发出第二查询请求，所述UPF上报的错误消息包括目的UE不可达；
    根据所述第二查询请求得到的群组信息，确定与所述目的UE对应的路径信息；以及
    向所述UPF更新所述UE对应的路径信息。
  9. 一种跨区域通信设备，包括存储器、处理器、存储在所述存 储器上并可在所述处理器上运行的计算机程序以及配置为实现所述处理器和所述存储器之间的连接通信的数据总线，所述计算机程序被所述处理器执行时实现如权利要求1至8中任一项所述的跨区域通信方法。
  10. 一种计算机可读存储介质，所述计算机可读存储介质存储有至少一个计算机程序，所述至少一个计算机程序可被至少一个处理器执行，以实现权利要求1至8中任一项所述的跨区域通信方法。
PCT/CN2022/103950 2021-07-07 2022-07-05 跨区域通信方法及设备、计算机可读存储介质 WO2023280166A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110765397.3 2021-07-07
CN202110765397.3A CN113225242B (zh) 2021-07-07 2021-07-07 跨区域通信方法、设备和存储介质

Publications (1)

Publication Number Publication Date
WO2023280166A1 true WO2023280166A1 (zh) 2023-01-12

Family

ID=77081616

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/103950 WO2023280166A1 (zh) 2021-07-07 2022-07-05 跨区域通信方法及设备、计算机可读存储介质

Country Status (2)

Country Link
CN (1) CN113225242B (zh)
WO (1) WO2023280166A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116805916A (zh) * 2023-08-23 2023-09-26 明阳时创(北京)科技有限公司 一种基于IPv6的异地局域网通信方法及系统
WO2024179416A1 (zh) * 2023-03-01 2024-09-06 华为技术有限公司 一种跨域通信方法及通信设备

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113225242B (zh) * 2021-07-07 2021-11-09 中兴通讯股份有限公司 跨区域通信方法、设备和存储介质
CN114020363B (zh) * 2021-11-15 2023-12-15 海能达通信股份有限公司 群组附着方法及相应设备
CN116233043A (zh) * 2021-12-06 2023-06-06 中兴通讯股份有限公司 会话创建方法、网元、存储介质
CN114285787B (zh) * 2021-12-30 2023-07-14 中国电信股份有限公司 跨用户面转发方法、系统和计算机可读存储介质
CN118414807A (zh) * 2022-01-21 2024-07-30 中兴通讯股份有限公司 用于虚拟网络传输的方法、装置和存储介质
CN116801194A (zh) * 2022-03-14 2023-09-22 中国电信股份有限公司 通信管理方法、装置和系统
CN117459902A (zh) * 2022-07-18 2024-01-26 中国电信股份有限公司 一种数据包传输方法及虚拟网络组
CN117793838A (zh) * 2022-09-21 2024-03-29 中国电信股份有限公司 虚拟网群组拓扑管理方法、nef实体、通信系统和存储介质
CN117858202A (zh) * 2022-09-30 2024-04-09 大唐移动通信设备有限公司 会话管理功能选择方法、装置及接入和移动性管理功能网元
CN118055517A (zh) * 2022-11-09 2024-05-17 大唐移动通信设备有限公司 用户面路径构建方法、装置、网络节点
CN118413904A (zh) * 2023-01-30 2024-07-30 中兴通讯股份有限公司 用户设备的通信方法和装置
CN118678489A (zh) * 2023-03-17 2024-09-20 华为技术有限公司 一种通信方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200228936A1 (en) * 2019-01-15 2020-07-16 Peyman TALEBI FARD Session Establishment To Join A Group Communication
CN111953576A (zh) * 2019-05-17 2020-11-17 华为技术有限公司 虚拟网络通信方法、设备及系统
CN112448875A (zh) * 2019-08-28 2021-03-05 华为技术有限公司 通信处理方法、通信处理装置以及系统
CN113225242A (zh) * 2021-07-07 2021-08-06 中兴通讯股份有限公司 跨区域通信方法、设备和存储介质

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112511320B (zh) * 2018-04-28 2022-04-29 华为技术有限公司 一种通信方法及设备
TW202010296A (zh) * 2018-08-16 2020-03-01 財團法人工業技術研究院 提供5g區域網路服務的方法及使用其的終端裝置和伺服器
CN116346604A (zh) * 2019-05-07 2023-06-27 华为技术有限公司 一种路由规则的配置方法及通信装置
CN110121155B (zh) * 2019-06-17 2021-05-14 腾讯科技（深圳）有限公司 虚拟网络群组的广播方法、装置、设备及系统
CN110366119B (zh) * 2019-07-18 2021-09-17 中国联合网络通信集团有限公司 一种网络群组消息管理方法、装置和系统
CN112929868A (zh) * 2019-12-05 2021-06-08 中兴通讯股份有限公司 跨区漫游通信方法、装置、电子设备及计算机可读介质

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200228936A1 (en) * 2019-01-15 2020-07-16 Peyman TALEBI FARD Session Establishment To Join A Group Communication
CN111953576A (zh) * 2019-05-17 2020-11-17 华为技术有限公司 虚拟网络通信方法、设备及系统
CN112448875A (zh) * 2019-08-28 2021-03-05 华为技术有限公司 通信处理方法、通信处理装置以及系统
CN113225242A (zh) * 2021-07-07 2021-08-06 中兴通讯股份有限公司 跨区域通信方法、设备和存储介质

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024179416A1 (zh) * 2023-03-01 2024-09-06 华为技术有限公司 一种跨域通信方法及通信设备
CN116805916A (zh) * 2023-08-23 2023-09-26 明阳时创(北京)科技有限公司 一种基于IPv6的异地局域网通信方法及系统
CN116805916B (zh) * 2023-08-23 2023-11-17 明阳时创(北京)科技有限公司 一种基于IPv6的异地局域网通信方法及系统

Also Published As

Publication number Publication date
CN113225242B (zh) 2021-11-09
CN113225242A (zh) 2021-08-06

Similar Documents

Publication Publication Date Title
WO2023280166A1 (zh) 跨区域通信方法及设备、计算机可读存储介质
CN114145054B (zh) 用于支持流量导向通过服务功能链的系统和方法
US10979536B2 (en) Contextualized information bus
US12052588B2 (en) UE migration method, apparatus, system, and storage medium
US20190222496A1 (en) Oam mechanisms for evpn active-active services
US11178000B2 (en) Method and system for processing NF component exception, and device
JP5323861B2 (ja) ネットワーク・リソースをプールするための方法および装置
US7978631B1 (en) Method and apparatus for encoding and mapping of virtual addresses for clusters
JP2019520763A (ja) ネットワークスライス選択方法、装置およびシステム
EP1966940B1 (en) Method for selective service updates for communication networks
US10097460B2 (en) Routing in an communications network having a distributed S/PGW architecture
US11283883B1 (en) Methods, systems, and computer readable media for providing optimized binding support function (BSF) packet data unit (PDU) session binding discovery responses
WO2011113289A1 (zh) 一种业务路由方法和业务网络
WO2020034965A1 (zh) 一种消息传输方法、装置及存储介质
WO2022001669A1 (zh) 建立vxlan隧道的方法及相关设备
WO2020057445A1 (zh) 一种通信系统、方法及装置
CN111432439B (zh) 一种upf数据面扩展及其系统
US9166884B2 (en) Network location service
WO2015070763A1 (zh) X2接口的自建立方法及装置
WO2023185678A1 (zh) 一种分流处理方法、设备及存储介质
WO2011150835A1 (zh) 一种请求获取路由信息的方法和相应的路由设备
WO2018049690A1 (zh) 一种报文传输方法、装置及系统
WO2023284366A1 (zh) Dbng-cp的备份方法及装置
WO2024099244A1 (zh) 一种通信方法、装置、相关设备和存储介质
WO2024034299A1 (ja) ＲＡＮ Ｉｎｔｅｌｌｉｇｅｎｔ Ｃｏｎｔｒｏｌｌｅｒ（ＲＩＣ）及びその方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22836915

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE