WO2025020007A1 - Procédé et appareil d'établissement de connexion de plan d'utilisateur, dispositif de réseau central, dispositif de communication, système de communication et support de stockage - Google Patents

Procédé et appareil d'établissement de connexion de plan d'utilisateur, dispositif de réseau central, dispositif de communication, système de communication et support de stockage Download PDF

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Publication number
WO2025020007A1
WO2025020007A1 PCT/CN2023/108750 CN2023108750W WO2025020007A1 WO 2025020007 A1 WO2025020007 A1 WO 2025020007A1 CN 2023108750 W CN2023108750 W CN 2023108750W WO 2025020007 A1 WO2025020007 A1 WO 2025020007A1
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WIPO (PCT)
Prior art keywords
network element
user plane
information
plane connection
service
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PCT/CN2023/108750
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English (en)
Chinese (zh)
Inventor
毛玉欣
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to PCT/CN2023/108750 priority Critical patent/WO2025020007A1/fr
Priority to CN202380010215.9A priority patent/CN119678649A/zh
Publication of WO2025020007A1 publication Critical patent/WO2025020007A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a method and device for establishing a user plane connection, a core network device, a communication device, a communication system, and a storage medium.
  • positioning services include regulatory positioning services and commercial positioning services.
  • positioning can be supported on the user plane connection between the terminal and the core network element, where the terminal and the core network element can use the user plane connection to transmit auxiliary service information and Long Term Evolution Positioning Protocol (LPP) messages.
  • LPP Long Term Evolution Positioning Protocol
  • the embodiments of the present disclosure provide a method, apparatus, core network device, device, chip system, storage medium, computer program and computer program product for establishing a user plane connection, which can be applied in the field of communication technology to solve the technical problem of "not being able to establish multiple user plane connections corresponding to multiple network elements respectively".
  • the present disclosure provides a method and device for establishing a user plane connection, a core network device, a communication device, a communication system, and a storage medium.
  • a method for establishing a user plane connection which is executed by a first network element, and includes: receiving first information sent by a second network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access a first service, and a user plane path related to the third network element is used to establish a first user plane connection between a terminal and a fourth network element, the fourth network element is different from a fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection are used for the first service; based on the first information, selecting the fourth network element.
  • a method for establishing a user plane connection which is executed by a second network element, and includes: sending first information to a first network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access a first service, and a user plane path related to the third network element is used to establish a first user plane connection between a terminal and a fourth network element, the fourth network element is different from the fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection are used for the first service.
  • a method for establishing a user plane connection including: a second network element sends first information to a first network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access a first service, and a user plane path related to the third network element is used to establish a first user plane connection between a terminal and a fourth network element, the fourth network element is different from a fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection are used for the first service; the first network element receives the first information sent by the second network element, and selects the fourth network element based on the first information.
  • a user plane connection establishment device including: a transceiver module, used to receive first information sent by a second network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access a first service, and the user plane path related to the third network element is used to establish a first user plane connection between a terminal and a fourth network element, the fourth network element is different from the fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection are used for the first service; a processing module, used to select the fourth network element according to the first information.
  • a user plane connection establishment device including: a transceiver module, used to send first information to a first network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access a first service, and the user plane path related to the third network element is used to establish a first user plane connection between a terminal and a fourth network element, the fourth network element is different from the fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection are used for the first service.
  • a core network device comprising: a first network element and a second network element; wherein the second network element is used to send first information to the first network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access a first service, and a user plane path related to the third network element is used to establish a first user plane connection between a terminal and a fourth network element, the fourth network element is different from the fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection are used for the first service; the first network element is used to receive the first information sent by the second network element, and select the fourth network element based on the first information.
  • a communication device comprising: one or more processors; wherein the processor is used to call instructions so that the communication device executes the user plane connection establishment method of any one of the first aspect, the second aspect, and the third aspect.
  • a communication system includes a first network element, a second network element, a third network element, a fourth network element, a fifth network element and/or a terminal, wherein the first network element is configured to implement the user plane connection establishment method of the first aspect, and the second network element is configured to implement the user plane connection establishment method of the second aspect.
  • a storage medium which stores instructions, and is characterized in that when the instructions are executed on a communication device, the communication device executes a user plane connection establishment method as described in any one of the first aspect, the second aspect, and the third aspect.
  • FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.
  • FIG2 is an interactive schematic diagram of a method for establishing a user plane connection according to an embodiment of the present disclosure
  • FIG3A is an interactive schematic diagram of a method for establishing a user plane connection according to another embodiment of the present disclosure.
  • 3B is an interactive schematic diagram of a method for establishing a user plane connection according to another embodiment of the present disclosure.
  • FIG3C is an interactive schematic diagram of a method for establishing a user plane connection according to another embodiment of the present disclosure.
  • FIG4 is an interactive schematic diagram of a method for establishing a user plane connection according to another embodiment of the present disclosure.
  • FIG5 is an interactive schematic diagram of a method for establishing a user plane connection according to another embodiment of the present disclosure.
  • FIG6 is an interactive schematic diagram of a method for establishing a user plane connection shown in yet another embodiment of the present disclosure.
  • FIG7A is a schematic diagram of the structure of a device for establishing a user plane connection proposed in an embodiment of the present disclosure
  • FIG. 7B is a schematic diagram of the structure of a device for establishing a user plane connection proposed in an embodiment of the present disclosure
  • FIG8 is a schematic diagram of the structure of a core network device proposed in an embodiment of the present disclosure.
  • FIG9A is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure.
  • FIG. 9B is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure.
  • the embodiments of the present disclosure provide a method and device for establishing a user plane connection, a communication device, a communication system, and a storage medium.
  • the terms such as the method for establishing a user plane connection can be replaced with the information processing method, the communication method, etc.
  • the terms such as the device for establishing a user plane connection can be replaced with the information processing device, the communication device, etc.
  • the terms such as the information processing system, the communication system, etc. can be replaced with each other.
  • each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined.
  • a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged.
  • the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined, for example, some or all of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.
  • elements expressed in the singular form such as “a”, “an”, “the”, “above”, “said”, “aforementioned”, “this”, etc., may mean “one and only one", or “one or more”, “at least one”, etc.
  • the noun after the article may be understood as a singular expression or a plural expression.
  • plurality refers to two or more.
  • the terms “at least one of”, “at least one of”, “at least one of”, “one or more”, “a plurality of”, “multiple”, etc. can be used interchangeably.
  • descriptions such as “at least one of A, B, C...”, “A and/or B and/or C...”, etc. include the situation where any one of A, B, C... exists alone, and also include the situation where any multiple of A, B, C... exist in any combination, and each situation can exist alone; for example, “at least one of A, B, C” includes the situation where A exists alone, B exists alone, C exists alone, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B and C; for example, A and/or B includes the situation where A exists alone, B exists alone, and the combination of A and B.
  • the description methods such as “in one case A, in another case B", “in response to one case A, in response to another case B”, etc. may include the following technical solutions according to the situation: A is executed independently of B, that is, in some embodiments A; B is executed independently of A, that is, in some embodiments B; A and B are selectively executed, that is, selected from A and B in some embodiments; A and B are both executed, that is, A and B in some embodiments.
  • branches such as A, B, C, etc., it is similar to the above.
  • prefixes such as “first” and “second” in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute restrictions on the position, order, priority, quantity or content of the description objects.
  • the statement of the description object refers to the description in the context of the claims or embodiments, and should not constitute unnecessary restrictions due to the use of prefixes.
  • the description object is a "field”
  • the ordinal number before the "field” in the "first field” and the "second field” does not limit the position or order between the "fields”
  • the "first” and “second” do not limit whether the "fields” they modify are in the same message, nor do they limit the order of the "first field” and the "second field”.
  • the description object is a "level”
  • the ordinal number before the "level” in the “first level” and the “second level” does not limit the priority between the "levels”.
  • the number of description objects is not limited by the ordinal number, and can be one or more. Taking the "first device” as an example, the number of "devices” can be one or more.
  • the objects modified by different prefixes may be the same or different. For example, if the description object is "device”, then the “first device” and the “second device” may be the same device or different devices, and their types may be the same or different. For another example, if the description object is "information”, then the "first information” and the “second information” may be the same information or different information, and their contents may be the same or different.
  • “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.
  • terms such as “greater than”, “greater than or equal to”, “not less than”, “more than”, “more than or equal to”, “not less than”, “higher than”, “higher than or equal to”, “not lower than”, and “above” can be replaced with each other, and terms such as “less than”, “less than or equal to”, “not greater than”, “less than”, “less than or equal to”, “no more than”, “lower than”, “lower than or equal to”, “not higher than”, and “below” can be replaced with each other.
  • devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments.
  • Terms such as “device”, “equipment”, “device”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.
  • network may be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).
  • terminal In some embodiments, the terms "terminal”, “terminal device”, “user equipment (UE)”, “user terminal” “mobile station (MS)”, “mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client and the like can be used interchangeably.
  • acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained.
  • data, information, etc. may be obtained with the user's consent.
  • each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns may also be implemented as an independent embodiment.
  • the corresponding relationships shown in the tables in the present disclosure can be configured or predefined.
  • the values of the information in each table are only examples and can be configured as other values, which are not limited by the present disclosure.
  • the corresponding relationships shown in some rows may not be configured.
  • appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc.
  • the names of the parameters shown in the titles of the above tables can also use other names that can be understood by the communication device, and the values or representations of the parameters can also be other values or representations that can be understood by the communication device.
  • other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables.
  • the predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.
  • FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.
  • a communication system 100 may include a terminal 101 and a core network device 102 .
  • the terminal 101 may include, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in a smart city (smart city), and at least one of a wireless terminal device in a smart home (smart home), but is not limited to these.
  • a mobile phone a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless
  • the core network device 102 may be a device including a first network element 1021, a second network element 1022, a third network element 1023, a fourth network element 1024, a fifth network element 1025, etc., or may be a plurality of devices or a device group including all or part of the first network element 1021, the second network element 1022, the third network element 1023, the fourth network element 1024, and the fifth network element 1025.
  • the network element may be virtual or physical.
  • the core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).
  • EPC Evolved Packet Core
  • 5GCN 5G Core Network
  • NGC Next Generation Core
  • the first network element 1021 and the third network element 1023 may be connected or not connected.
  • the first network element 1021 is, for example, an access and mobility management function (AMF) network element.
  • AMF access and mobility management function
  • the first network element 1021 is used to provide access and mobility management functions, and the name is not limited thereto.
  • the second network element 1022 is, for example, a session management function (SMF) network element.
  • SMS session management function
  • the second network element 1022 is used to provide a session management function, and the name is not limited thereto.
  • the third network element 1023 is, for example, a user plane function (UPF) network element.
  • UPF user plane function
  • the third network element 1023 is used to provide user plane functions, and the name is not limited thereto.
  • the AMF network element and the UPF network element may or may not be connected.
  • the fourth network element 1024 is, for example, a location management function (LMF) network element that provides positioning services.
  • LMF location management function
  • the fourth network element 1024 is used to provide a location management function, and the name is not limited thereto.
  • the fourth network element 1024 may be a newly added LMF network element, and the fourth network element 1024 may also be referred to as a target LMF network element.
  • the fifth network element 1025 is, for example, a location management function (LMF) network element that provides positioning services.
  • LMF location management function
  • the fifth network element 1025 is used to provide a location management function, and the name is not limited thereto.
  • the fifth network element 1025 may be an LMF network element that has established a user plane connection with the terminal, and the fifth network element 1025 may also be referred to as a source LMF network element.
  • new LMF network elements may be selected and added by the AMF network element.
  • the terminal 101 and the core network device 102 can be connected through an access network device.
  • the access network device is, for example, a node or device that accesses the terminal to a wireless network.
  • the access network device may include an evolved Node B (eNB), a next generation evolved Node B (ng-eNB), a next generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), At least one of wireless backhaul equipment, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in 6G communication system, open base station (Open RAN), cloud base station (Cloud RAN), base station in other communication systems, and access node in wireless fidelity (WiFi) system, but not limited thereto.
  • eNB evolved Node B
  • ng-eNB next generation evolved Node B
  • gNB next generation Node B
  • NB node
  • the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure.
  • a person of ordinary skill in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.
  • the following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or part of the subject, but are not limited thereto.
  • the subjects shown in FIG1 are examples, and the communication system may include all or part of the subjects in FIG1 , or may include other subjects other than FIG1 , and the number and form of the subjects are arbitrary, and the connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be in any manner, which may be a direct connection or an indirect connection, and may be a wired connection or a wireless connection.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • SUPER 3G IMT-Advanced
  • 4th generation mobile communication system 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • 5G new radio NR
  • Future Radio Access FX
  • New-Radio Access Technology RAT
  • New Radio NR
  • New radio access NX
  • Future generation radio access FX
  • GSM Global System for Mobile communications
  • GSM registered trademark
  • CDMA2000 Ultra Mobile Broadband
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi (registered trademark)
  • IEEE 802.16 WiMAX (registered trademark)
  • IEEE 802.20 Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) network
  • D2D Device-to-Device
  • M2M Machine-to-Machine
  • IoT Vehicle-to-Everything
  • Access and mobility management function (AMF) network element 1. Access and mobility management function (AMF) network element.
  • AMF Access and mobility management function
  • the AMF network element is a logical node function network element on the core network side. It is the access point of the terminal and wireless core network control plane. It receives all connection and session related information from the user equipment and performs registration, connection, reachability and mobility management. In addition, the AMF network element provides a session management message transmission channel for the terminal equipment and the session management function (SMF) equipment, and provides authentication and authorization functions for the user access.
  • SMF session management function
  • LMF Location management function
  • the LMF is located in the local radio access network (RAN) or the core network (CN) and is used to provide location management function services to the UE.
  • RAN local radio access network
  • CN core network
  • User plane function (UPF) network elements including routing and forwarding of user data packets, data interaction with external data networks, user plane quality of service QoS processing, flow control rule implementation (such as gating, redirection, traffic steering), etc.
  • positioning services include regulatory positioning services and commercial positioning services.
  • positioning can be supported on the user plane connection between the UE and the LMF network element, where the LMF network element and the UE can use the user plane connection to transmit auxiliary service information and Long Term Evolution LTE Positioning Protocol (LTEPositioning Protocol, LPP) messages.
  • LTP Long Term Evolution LTE Positioning Protocol
  • positioning can be achieved through user plane connection, and the LMF network element can act as an application server and be deployed in 5GC.
  • the user plane connection between the terminal and the LMF network element can be established within a protocol data unit (PDU) session, and the user plane path between the terminal and the LMF network element is used to establish the user plane connection.
  • PDU protocol data unit
  • the UE can establish a PDU session for user plane positioning based on local configuration or user equipment routing selection policy (UE Routing Selection Policy, URSP) using PDU session parameters related to user plane positioning services, such as dedicated data network name (Data Network Name, DNN) and single network slice selection assistance information (S-NSSAI).
  • UE Routing Selection Policy URSP
  • URSP user equipment routing selection policy
  • PDU session parameters related to user plane positioning services such as dedicated data network name (Data Network Name, DNN) and single network slice selection assistance information (S-NSSAI).
  • the SMF network element can select a PDU session anchor UPF (PDU session anchor UPF, PSA UPF, located at the central site or local site) network element connected to the LMF network element to conduct this PDU session based on S-NSSAI, DNN and UE location information.
  • PDU session anchor UPF PDU session anchor UPF, PSA UPF, located at the central site or local site
  • the selection of the local PSA may be determined by the Internet Protocol Address (IP address), network prefix and its Data Network Access Identifier (DNAI) of the local LMF pre-configured in the SMF network element for positioning services within a specific service area. Session grouping of the local LMF network element may also be supported for user plane positioning services.
  • IP address Internet Protocol Address
  • DNAI Data Network Access Identifier
  • switching from a source LMF network element to a target LMF network element may be supported, during which the source LMF network element terminates the user plane connection with the terminal, while the target LMF network element may establish a user plane connection with the terminal.
  • adding a new fourth network element may be triggered to support establishing multiple user plane connections corresponding to multiple network elements respectively.
  • FIG2 is an interactive schematic diagram of a method for establishing a user plane connection according to an embodiment of the present disclosure.
  • an embodiment of the present disclosure relates to a method for establishing a user plane connection, which can be used in a communication system 100, and the method includes:
  • Step S2101 The second network element sends first information to the first network element.
  • the first network element is, for example, an AMF network element.
  • the second network element is, for example, an SMF network element.
  • the information for indicating adding a third network element for a protocol data unit (PDU) session may be referred to as first information.
  • the third network element is, for example, a UPF network element, which is newly added for the PDU session.
  • the third network element may also be referred to as a first UPF network element, which may be different from an existing UPF network element.
  • the first information is used to indicate a third network element related to a protocol data unit (PDU) session.
  • PDU protocol data unit
  • the first information is used to indicate a third network element related to a protocol data unit PDU session, which can be understood as the first information being used to indicate the addition of a third network element for the protocol data unit PDU session.
  • the first information is used to indicate that a third network element has been added to the protocol data unit PDU session, or the first information is used to indicate the need to add a third network element to the protocol data unit PDU session.
  • the PDU session is used to access the first service.
  • the user plane path associated with the third network element is used to establish a first user plane connection between the terminal and the fourth network element
  • the fourth network element is different from the fifth network element
  • the fifth network element is a network element that has established a second user plane connection with the terminal
  • the first user plane connection and/or the second user plane connection are used for the first service.
  • the fourth network element is, for example, a LMF network element.
  • the fifth network element is, for example, a LMF network element.
  • the fourth network element may be a newly added LMF network element, and the fourth network element may also be referred to as a target LMF network element.
  • the fifth network element may be an LMF network element that has established a user plane connection with the terminal, and the fifth network element may also be referred to as a source LMF network element.
  • the user plane path associated with the first UPF network element is used to establish a user plane connection between the terminal and the target LMF network element.
  • This user plane connection can be referred to as a first user plane connection.
  • the user plane path associated with the existing UPF network element is used to establish a user plane connection between the terminal and the source LMF network element.
  • This user plane connection can be referred to as a second user plane connection.
  • a new UPF network element can be added for the protocol data unit PDU session.
  • a corresponding target LMF network element can be added for the newly added UPF network element.
  • a user plane path can be established based on the newly added UPF network element, and a user plane connection can be established between the terminal and the target LMF network element based on the newly added user plane path. This is equivalent to connecting the terminal to multiple LMF network elements at the same time, thereby supporting the establishment of multiple user plane connections corresponding to multiple LMF network elements at the same time.
  • the first service is a user plane positioning service.
  • the first service may also be any other possible service.
  • the positioning service may share DNN and S-NSSAI with other services, that is, the positioning service may be deployed on the same DNN and/or S-NSSAI as other services.
  • the positioning service is deployed in a dedicated DNN and/or S-NSSAI.
  • the first service is a user plane positioning service
  • multiple user plane connections corresponding to multiple network elements respectively can support effective implementation of the user plane positioning service.
  • the first information may be information of a third network element.
  • the first information may be information of the first UPF network element.
  • the first information includes one or more of an identifier of a third network element, an Internet Protocol IP address range accessible to the third network element, a data network access identifier (DNAI) associated with the third network element, and indication information, wherein the indication information is used to indicate that a third network element has been added, thereby enabling the first network element to accurately obtain information about the third network element newly added to the protocol data unit PDU session.
  • a third network element an Internet Protocol IP address range accessible to the third network element
  • DNAI data network access identifier
  • the first network element may receive a message sent by the second network element, and obtain the first information from the message.
  • the message may be a reused existing message or a new message.
  • the first network element may receive a first message sent by the second network element, wherein the first message includes first information; and the first message is used to notify the status of the SM context of the PDU session.
  • the first network element may receive a second message sent by the second network element, wherein the second message includes the first information; and the second message is used to notify the status of the PDU session.
  • the first network element may receive a third message sent by the second network element, wherein the third message includes the first information; the third message is used to notify information of PDU session-related events, and the first network element has subscribed to the event.
  • the first message is, for example, a Nsmf_PDUSession_SMContextStatusNotify message.
  • the second message is, for example, a Nsmf_PDUSession_StatusNotify message.
  • the third message is, for example, an Nsmf_EventExposure_Notify message.
  • the second network element can send the first information to the first network element based on the above-mentioned first message, or the second message, or the third message, which can effectively improve the flexibility of the first information indication, and because the existing message is reused to indicate the first information, the indication overhead of the first information can be effectively reduced.
  • Step S2102 The first network element receives first information sent by the second network element.
  • the AMF network element can receive first information sent by the SMF network element, and based on the first information, obtain information of a third network element added to the protocol data unit PDU session.
  • the AMF network element can receive a first message, or a second message, or a third message sent by the SMF network element, and obtain first information from the first message, or the second message, or the third message.
  • Step S2103 The first network element determines second information based on the first information, where the second information is used to indicate information of the fourth network element.
  • the information used to indicate the fourth network element may be referred to as second information.
  • the second information may be information of a fourth network element.
  • the second information can be used to indicate information of a target LMF network element, where the target LMF network element is a newly added LMF network element.
  • the AMF network element can refer to the information of the first UPF network element newly added for the protocol data unit PDU session, determine the information of the LMF network element that can be effectively connected based on the user plane path of the first UPF network element, and use the information of the LMF network element as the second information.
  • the AMF network element may select a target LMF network element from a plurality of candidate network elements based on the second information.
  • the second information includes: one or more of: an identifier of a fourth network element, service area information of the fourth network element, service information supported by the fourth network element, a first Internet Protocol IP address of the fourth network element, and a first data network access identifier DNAI of the fourth network element, thereby enabling the first network element to obtain information about the fourth network element to which it can be effectively connected based on the user plane path of the third network element, so as to support the selection of a suitable fourth network element.
  • Step S2104 The first network element selects a fourth network element according to the second information.
  • the first network element may select the fourth network element by referring to the information indicating the fourth network element.
  • the first network element can select a fourth network element from multiple candidate network elements.
  • the candidate network element can be a network element of the same type as the fourth network element.
  • the candidate network element is a candidate LMF network element.
  • One candidate LMF network element can be selected from multiple candidate LMF network elements as the target LMF network element.
  • the first network element can determine the second information based on the first information, wherein the second information is used to indicate the information of the fourth network element, and select the fourth network element with reference to the second information, so as to achieve that when a third network element is added to the protocol data unit PDU session, the first network element determines and selects the fourth network element to support the user plane connection of adding the new fourth network element.
  • the first network element may select a candidate network element that matches the identifier of the fourth network element as the fourth network element.
  • the first network element may select a candidate network element that matches the first IP address as the fourth network element.
  • the first network element may select a candidate network element that matches the first DNAI as the fourth network element.
  • the first network element may select a candidate network element that matches the first IP address and the first DNAI as the fourth network element.
  • the first network element can select the fourth network element according to the identifier of the fourth network element and/or the first IP address of the fourth network element and/or the first DNAI of the fourth network element, so as to accurately and quickly select the fourth network element from multiple candidate network elements.
  • the first network element can select the fourth network element based on local configuration information, thereby effectively improving the flexibility of selecting the fourth network element when adding a third network element to the protocol data unit PDU session, and effectively applicable to personalized communication scenarios.
  • the local configuration information includes: the identification of the candidate network element, the service area information of the candidate network element, the service information supported by the candidate network element, the candidate IP address of the candidate network element, and the candidate DNAI of the candidate network element, which can support the first network element to select a candidate network element as the fourth network element.
  • the first network element can learn based on the first information that a third network element has been added for the protocol data unit PDU session, or that a third network element needs to be added for the protocol data unit PDU session.
  • the first network element can also refer to the local configuration information to select a fourth network element, such as referring to the locally configured candidate network element identifier, the candidate network element service area information, the service information supported by the candidate network element, the candidate IP address of the candidate network element, and one or more of the candidate DNAI of the candidate network element, to select a candidate network element as the fourth network element.
  • the first network element can select a fourth network element from multiple candidate network elements.
  • the candidate network element can be a network element of the same type as the fourth network element.
  • the candidate network element is a candidate LMF network element.
  • One candidate LMF network element can be selected from multiple candidate LMF network elements as the target LMF network element.
  • the AMF network element may decide to add a new LMF network element locally.
  • the AMF network element may be configured with relevant information, such as the service area of each LMF network element and the location services it supports.
  • the AMF network element may select a candidate LMF network element from multiple candidate LMF network elements as a target LMF network element based on the configured relevant information.
  • Step S2105 The first network element obtains user plane information of the fourth network element.
  • the user plane information of the fourth network element is used to establish a first user plane connection between the terminal and the fourth network element.
  • the user plane information of the fourth network element may be, for example, the user plane location address of the target LMF network element, security-related information, etc.
  • the first network element may locally retrieve user plane information of the fourth network element.
  • the first network element may request the fourth network element to obtain the user plane information of the fourth network element.
  • the first network element may send a fourth message to a fourth network element, wherein the fourth message is used to request establishment of a first user plane connection, and receive a fifth message sent by the fourth network element, wherein the fifth message includes: user plane information of the fourth network element; the fifth message is used for the fourth network element to forward the N1N2 interface message.
  • the fourth message may be, for example, a Nlmf_Location_UPConfig request message.
  • a request may be made based on an Nlmf_Location_UPConfig request message to request acquisition of user plane information of the fourth network element.
  • the AMF network element may send a Nlmf_Location_UPConfig request message to the target LMF network element to request the user plane information of the target LMF network element.
  • the fourth network element may feed back its user plane information to the first network element.
  • the target LMF network element may feedback a fifth message to the AMF network element, and the fifth message may carry user plane information of the target LMF network element.
  • the fifth message is used by the fourth network element to forward the N1N2 interface message, so that existing messages can be reused and excessive indication overhead can be effectively avoided.
  • the fifth message may be, for example, a Namf_Communication_N1N2MessageTransfer message.
  • the first network element can also request the fourth network element to obtain the user plane information of the fourth network element, so as to obtain the user plane information of the fourth network element in a timely manner, so as to support the timely establishment of the first user plane connection between the terminal and the fourth network element. It is also possible to reuse existing messages, effectively avoiding occupying too much indication overhead.
  • Step S2106 The first network element establishes a first user plane connection between the terminal and the fourth network element according to the user plane information of the fourth network element.
  • the user plane connection between the terminal and the fourth network element may be referred to as a first user plane connection.
  • the user plane connection between the terminal and the fifth network element may be referred to as a second user plane connection.
  • the first network element may trigger establishment of a first user plane connection between the terminal and the fourth network element, so as to timely establish the first user plane connection between the terminal and the fourth network element to support effective implementation of the first service.
  • the first network element can obtain user plane information of the fourth network element, and establish a first user plane connection between the terminal and the fourth network element based on the user plane information of the fourth network element, so as to accurately and quickly establish the first user plane connection between the terminal and the fourth network element.
  • Step S2107 The first network element updates the user plane connection context for the first service according to the first user plane connection.
  • the first network element may obtain the context of the first user plane connection, and update the user plane connection context for the first service according to the context of the first user plane connection, thereby timely updating the user plane connection context of the first service to support effective implementation of the first service.
  • Step S2108 The first network element sends a sixth message to the fifth network element.
  • the sixth message is used to request the fifth network element to migrate a selected portion of the first service to the fourth network element.
  • the sixth message is used to request the fifth network element to migrate a selected portion of the first service to the fourth network element.
  • the message for requesting the fifth network element to migrate the selected part of the first service to the fourth network element may be referred to as a sixth message.
  • the sixth message is, for example, a Nlmf_Location_UPConfig request message.
  • the Nlmf_Location_UPConfig request message may include a request from the source LMF network element to move the selected positioning service to the target LMF network element.
  • the number of positioning services may be one or more, and the selected positioning service may be, for example, some positioning services among multiple positioning services, or may be, for example, a part of one positioning service.
  • the first network element can also select part of the first service and request the fifth network element to migrate the selected part of the first service to the fourth network element, so as to execute the selected part of the first service based on the first user plane connection between the terminal and the fourth network element, which can improve the flexibility of the implementation of the first service and is suitable for personalized implementation scenarios of the first service.
  • the fifth network element may migrate a selected portion of the first service to the fourth network element.
  • the selected part of the positioning service can be migrated to the target LMF network element.
  • Step S2109 The first network element executes other first services based on the second user plane connection.
  • the other first services are different from the selected part of the first services, and the selected part of the first services have been migrated to the fourth network element.
  • other first services refer to first services remaining except the selected part of first services, and may be unselected part of first services among multiple first services, or unselected remaining part of first services.
  • the AMF network element may execute the first service that has not been migrated based on the second user plane connection between the terminal and the source LMF network element, and execute the first service that has been migrated based on the first user plane connection between the terminal and the target LMF network element.
  • the first network element may also continue to execute the first service that has not been migrated based on the second user plane connection between the terminal and the fifth network element, so as to ensure the implementation continuity of the first service that has not been migrated.
  • the user plane connection establishment method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2109.
  • step S2101 may be implemented as an independent embodiment
  • step S2102 may be implemented as an independent embodiment, and so on, but not limited thereto.
  • Steps S2101+S2102 may be implemented as independent embodiments
  • steps S2101+S2102+S2103 may be implemented as independent embodiments, but not limited thereto.
  • each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other implementation modes or other examples.
  • the second network element can indicate the first information to the first network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access the first service, the user plane path related to the third network element is used to establish a first user plane connection between the terminal and the fourth network element, the fourth network element is different from the fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection are used for the first service.
  • the first information is used to indicate a third network element related to a protocol data unit PDU session
  • the PDU session is used to access the first service
  • the user plane path related to the third network element is used to establish a first user plane connection between the terminal and the fourth network element
  • the fourth network element is different from the fifth network element
  • the fifth network element is a network element that has established a second user plane connection with the terminal
  • the first user plane connection and/or the second user plane connection
  • FIG3A is an interactive schematic diagram of a method for establishing a user plane connection according to another embodiment of the present disclosure.
  • the embodiment of the present disclosure relates to a method for establishing a user plane connection, which can be used in a first network element.
  • the method includes:
  • Step S3101 receiving the first information sent by the second network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access the first service, and the user plane path related to the third network element is used to establish a first user plane connection between the terminal and the fourth network element, the fourth network element is different from the fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection are used for the first service.
  • the first information is used to indicate a third network element related to a protocol data unit PDU session
  • the PDU session is used to access the first service
  • the user plane path related to the third network element is used to establish a first user plane connection between the terminal and the fourth network element
  • the fourth network element is different from the fifth network element
  • the fifth network element is a network element that has established a second user plane connection with the terminal
  • Step S3102 select a fourth network element according to the first information.
  • the user plane connection establishment method involved in the embodiment of the present disclosure may include at least one of step S3101 to step S3102.
  • step S3101 may be implemented as an independent embodiment
  • step S3102 may be implemented as an independent embodiment, but is not limited thereto
  • Steps S3101+S3102 may be implemented as independent embodiments, and so on, but are not limited thereto.
  • each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other implementation modes or other examples.
  • FIG3B is an interactive schematic diagram of a method for establishing a user plane connection according to another embodiment of the present disclosure.
  • the embodiment of the present disclosure relates to a method for establishing a user plane connection, which can be used for a first network element, and the method includes:
  • Step S3201 receiving the first information sent by the second network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access the first service, and the user plane path related to the third network element is used to establish a first user plane connection between the terminal and the fourth network element, the fourth network element is different from the fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection are used for the first service.
  • the first information is used to indicate a third network element related to a protocol data unit PDU session
  • the PDU session is used to access the first service
  • the user plane path related to the third network element is used to establish a first user plane connection between the terminal and the fourth network element
  • the fourth network element is different from the fifth network element
  • the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane
  • Step S3202 Determine second information based on the first information, where the second information is used to indicate information of a fourth network element.
  • Step S3203 select a fourth network element according to the second information.
  • the user plane connection establishment method involved in the embodiment of the present disclosure may include at least one of step S3201 to step S3203.
  • step S3201 may be implemented as an independent embodiment
  • step S3202 may be implemented as an independent embodiment, but is not limited thereto
  • Steps S3201+S3202 may be implemented as independent embodiments, and so on, but are not limited thereto.
  • each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other implementation modes or other examples.
  • FIG3C is an interactive schematic diagram of a method for establishing a user plane connection according to another embodiment of the present disclosure.
  • the present disclosure embodiment relates to a method for establishing a user plane connection, which can be used for a first network element.
  • the method includes:
  • Step S3301 receiving the first information sent by the second network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access the first service, and the user plane path related to the third network element is used to establish a first user plane connection between the terminal and the fourth network element, the fourth network element is different from the fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection are used for the first service.
  • the first information is used to indicate a third network element related to a protocol data unit PDU session
  • the PDU session is used to access the first service
  • the user plane path related to the third network element is used to establish a first user plane connection between the terminal and the fourth network element
  • the fourth network element is different from the fifth network element
  • the fifth network element is a network element that has established a second user plane connection with the terminal
  • Step S3302 Determine second information based on the first information, where the second information is used to indicate information of a fourth network element.
  • Step S3303 select a fourth network element according to the second information.
  • Step S3304 Obtain user plane information of the fourth network element.
  • Step S3305 Establish a first user plane connection between the terminal and the fourth network element according to the user plane information of the fourth network element.
  • Step S3306 Update the user plane connection context for the first service according to the first user plane connection.
  • Step S3307 Send a sixth message to the fifth network element, where the sixth message is used to request the fifth network element to migrate the selected part of the first service to the fourth network element.
  • Step S3308 Execute other first services based on the second user plane connection, wherein the other first services are different from the selected part of the first services, and the selected part of the first services have been migrated to the fourth network element.
  • the user plane connection establishment method involved in the embodiment of the present disclosure may include at least one of step S3301 to step S3308.
  • step S3301 may be implemented as an independent embodiment
  • step S3302 may be implemented as an independent embodiment, and so on, but is not limited thereto
  • Steps S3301+S3302 may be implemented as independent embodiments, and so on, but are not limited thereto.
  • each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other implementation modes or other examples.
  • FIG4 is an interactive schematic diagram of a method for establishing a user plane connection according to another embodiment of the present disclosure.
  • the embodiment of the present disclosure relates to a method for establishing a user plane connection, which can be used for a second network element.
  • the method includes:
  • Step S4101 sending first information to the first network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access a first service, and a user plane path related to the third network element is used to establish a first user plane connection between the terminal and a fourth network element, the fourth network element is different from the fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection are used for the first service.
  • the first information is used to indicate a third network element related to a protocol data unit PDU session
  • the PDU session is used to access a first service
  • a user plane path related to the third network element is used to establish a first user plane connection between the terminal and a fourth network element
  • the fourth network element is different from the fifth network element
  • the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or
  • step S4101 may be implemented as an independent embodiment, but is not limited thereto.
  • each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other implementation modes or other examples.
  • FIG5 is an interactive schematic diagram of a method for establishing a user plane connection according to another embodiment of the present disclosure. As shown in FIG5, an embodiment of the present disclosure relates to a method for establishing a user plane connection, which can be used in a communication system. The method includes:
  • Step S5101 the second network element sends first information to the first network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access the first service, the user plane path related to the third network element is used to establish a first user plane connection between the terminal and the fourth network element, the fourth network element is different from the fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection are used for the first service.
  • the first information is used to indicate a third network element related to a protocol data unit PDU session
  • the PDU session is used to access the first service
  • the user plane path related to the third network element is used to establish a first user plane connection between the terminal and the fourth network element
  • the fourth network element is different from the fifth network element
  • the fifth network element is a network element that has established a second user plane connection with the terminal
  • Step S5102 The first network element receives first information sent by the second network element, and selects a fourth network element according to the first information.
  • the user plane connection establishment method involved in the embodiment of the present disclosure may include at least one of step S5101 to step S5102.
  • step S5101 may be implemented as an independent embodiment
  • step S5102 may be implemented as an independent embodiment, but is not limited thereto
  • Steps S5101+S5102 may be implemented as independent embodiments, but are not limited thereto.
  • each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other implementation modes or other examples.
  • FIG. 6 is an interactive schematic diagram of a user plane connection establishment method shown in another embodiment of the present disclosure.
  • an AMF network element an SMF network element, a source LMF network element, a target LMF network element, and a UE are included.
  • the addition of a newly added LMF network element can be triggered by an SMF network element or an AMF network element.
  • the newly added LMF network element can also be referred to as a target LMF network element, and the connected LMF network element can be referred to as a source LMF network element.
  • the SMF network element or the AMF network element can trigger the addition of the target LMF network element.
  • Such methods may include:
  • the AMF network element may decide to add a target LMF network element locally.
  • the AMF network element may be configured with relevant information, such as the service area of each LMF network element and the location services it supports.
  • the SMF network element instructs the AMF network element to insert the target protocol data unit session anchor PSA.
  • the SMF network element may send a message to the AMF network element, which may be used to notify the status of the PDU session SM context or to notify the PDU session status, and the message may carry an indication of adding a PSA.
  • the added PSA may also be referred to as a target PSA or a newly added PSA.
  • the SMF network element may send a Nsmf_PDUSession_SMContextStatusNotify message to the AMF network element.
  • the Nsmf_PDUSession_SMContextStatusNotify message may carry an indication of adding a PSA.
  • an added PSA is inserted through an uplink classifier (UL CL) or a branching point (BP) to support simultaneous connection to local LMF network elements and central LMF network elements.
  • UL CL uplink classifier
  • BP branching point
  • the SMF network element can determine and send the change of PDU and the indication of adding PSA to the AMF network element.
  • the SMF network element can perform local PSA and UL CL/BP insertion based on the locally configured IP address and/or network prefix of the LMF network element used for positioning services within a specific service area and the DNAI, and determine to add a new LMF (i.e., the target LMF network element) based on the added PSA.
  • a new LMF i.e., the target LMF network element
  • the SMF network element can send PDU changes and indications of newly added PSA to the AMF network element through the PDU session status notification process or the event opening process.
  • the SMF network element can send a message to the AMF network element to implement the PDU session status notification process or the event opening process.
  • the message may be, for example, a Nsmf_PDUSession_StatusNotify message, a Nsmf_EventExposure_Notify message, or a Nsmf_PDUSession_SMContextStatusNotify message.
  • the target DNAI (indicating the DNAI with the PSA added, that is, the DNAI that can access the target LMF network element) can also be used by the AMF network element to select the target LMF network element.
  • the target DNAI may be carried in a message sent by the SMF network element to the AMF network element.
  • the extended status information may be used to indicate that the PDU session has changed due to the addition of the PSA.
  • the extended status information may, for example, be setting ResourceStatus (resource status) to an "ADD_ANCHOR_UPF" field, and/or setting a reason value to an "ADDED_ANCHOR_UPF” field.
  • the AMF network element may pre-subscribe to relevant events from the SMF network element.
  • AMF network element selects to add LMF network element.
  • the AMF network element may choose to add an LMF network element.
  • the LMF network element may select a newly added LMF network element based on the service area of the LMF network element, other locally configured information, and/or the target DNAI received from step 1b.
  • an LMF network element is selected to be added based on a target DNAI
  • a network repository function (NRF) network element is used to discover the LMF network element
  • the LMF information stored in the NRF network element includes DNAI information.
  • the AMF network element determines that there is no need to add an LMF network element.
  • the AMF network element sends a Nlmf_Location_UPConfig request message to the target LMF network element.
  • the target LMF network element feeds back the Namf_Communication_N1N2MessageTransfer message (including user plane information) to the AMF network element.
  • the AMF network element may request the user plane information from the target LMF network element based on the identity (ID) of the target LMF.
  • the AMF network element may send a Nlmf_Location_UPConfig request message to the target LMF network element to request establishment of a positioning service user plane connection.
  • the positioning service user plane connection or the location service user plane connection can be expressed as Location Service-UP connection (LCS-UP connection).
  • LCS-UP connection Location Service-UP connection
  • the target LMF network element can send user plane information to the AMF network element, indicating that the UE accepts and uses the user plane for positioning.
  • the user plane information may include the user plane location address and security-related information of the target LMF network element.
  • the AMF network element sends a DL NAS TRANSPORT message (including user plane information) to the UE.
  • a DL NAS TRANSPORT message represents a downlink non-access layer transmission message
  • the DL NAS TRANSPORT message includes user plane information of a target LMF network element.
  • the AMF network element can send the user plane information of the target LMF network element to the UE via a DL NAS TRANSPORT message.
  • the AMF network element may receive user plane information from the target LMF network element in step 2b, or retrieve user plane information locally based on the ID of the target LMF network element received in step 1.
  • 3.UE sends UL NAS TRANSPORT message (user plane positioning confirmation information) to the AMF network element.
  • the UL NAS TRANSPORT message represents an uplink non-access stratum transmission message.
  • the UE can use the user equipment routing selection policy (UE Routing Selection Policy, URSP) to establish a PDU session that supports the user plane positioning service.
  • UE Routing Selection Policy UE Routing Selection Policy
  • the URSP includes PDU session parameters related to user plane positioning, such as dedicated DNN, S-NSSAI, etc.
  • the AMF network element sends a Namf_N1MessageNotify message (user plane location confirmation information) to the target LMF network element.
  • the AMF network element may send user plane location confirmation information to the target LMF network element via a Namf_N1MessageNotify message.
  • the Namf_N1MessageNotify message may represent an N1 interface notification message.
  • the UE can send user plane positioning confirmation information to the target LMF network element through the AMF network element, indicating that the user plane connection positioning service is successful or the user plane connection positioning service fails, for example, a suitable PDU session is not established.
  • the target LMF network element may notify the UE to establish a user plane connection through the known IP address.
  • the UE establishes a user plane connection.
  • the UE may establish a user plane connection with the target LMF network element.
  • the target LMF network element sends a Nlmf_Location_UPNotify message (user plane positioning confirmation information) to the AMF network element.
  • the target LMF network element may indicate to the AMF network element through an Nlmf_Location_UPNotify message that the user plane connection between the UE and the target LMF network element has been established.
  • the AMF network element updates the user plane connection context of the positioning service.
  • the AMF network element may update the LCS-UP connection context, and the updated LCS-UP connection context may include: the connection context from the UE to the target LMF network element.
  • the AMF network element sends a Nlmf_Location_UPConfig request message to the source LMF network element.
  • the Nlmf_Location_UPConfig request message may include a request from the source LMF network element to move the selected positioning service to the target LMF network element.
  • the source LMF network element sends a Nlmf_Location_LocationContextTransfer request message to the target LMF network element.
  • the Nlmf_Location_LocationContextTransfer request message for example, is Nlmf_Location_LocationContextTransfer Request.
  • the target LMF network element sends a Nlmf_Location_LocationContextTransfer response message to the source LMF network element.
  • the Nlmf_Location_LocationContextTransfer response message for example, is Nlmf_Location_LocationContextTransfer Response.
  • the source LMF network element may call the Nlmf_Location_LocationContextTransfer service to provide the target LMF network element with the current location service of the UE or the context of the location service related to the selected location service.
  • the target LMF network element may notify the source LMF network element of the location service or positioning service context transmission operation result.
  • sending a Nlmf_Location_LocationContextTransfer request corresponds to calling the Nlmf_Location_LocationContextTransfer service
  • the Nlmf_Location_LocationContextTransfer response corresponds to the output after the execution of the calling Nlmf_Location_LocationContextTransfer service.
  • the source LMF network element feeds back the Nlmf_Location_UPConfig response message to the AMF network element.
  • sending a Nlmf_Location_UPConfig request corresponds to calling the Nlmf_Location_UPConfig service
  • the Nlmf_Location_UPConfig response corresponds to the output after the execution of the calling Nlmf_Location_UPConfig service.
  • the source LMF network element may respond to the AMF network element, and based on the information received in step 1a or step 1b, if the user plane connection of the source LMF network element is still active, the source LMF network element maintains connection with the UE for other positioning services other than the positioning service transferred to the target LMF network element.
  • the sending of messages between core network elements can be achieved, for example, by calling corresponding services, and the response to the message can be, for example, the output after the corresponding service is executed.
  • the message can be, for example, the message in the above step 2a, step 2b, and step 4.
  • LMF network elements can be connected simultaneously.
  • a central LMF network element and a local LMF network element triggered by PDU session packet information can be connected simultaneously.
  • a central LMF network element and a local LMF network element may be connected at the same time, and a central LMF network element and a local LMF network element may be connected at different times as the UE moves.
  • FIG 7A is a schematic diagram of the structure of the user plane connection establishment device proposed in the embodiment of the present disclosure.
  • the user plane connection establishment device includes: a transceiver module, which is used to receive the first information sent by the second network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access the first service, and the user plane path related to the third network element is used to establish a first user plane connection between the terminal and the fourth network element, the fourth network element is different from the fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection are used for the first service; a processing module, which is used to select the fourth network element according to the first information.
  • the above-mentioned transceiver module is used to execute the relevant steps performed by the first network element in any of the above methods, which will not be repeated here.
  • the user plane connection establishment device also includes at least one of a sending module and a receiving module, the sending module is used to execute the steps related to sending performed by the first network element in any of the above methods, and the receiving module is used to execute the steps related to receiving performed by the first network element in any of the above methods, which are not repeated here.
  • the sending module is used to execute the steps related to sending performed by the first network element in any of the above methods
  • the receiving module is used to execute the steps related to receiving performed by the first network element in any of the above methods, which are not repeated here.
  • FIG 7B is a schematic diagram of the structure of the user plane connection establishment device proposed in an embodiment of the present disclosure.
  • the user plane connection establishment device includes: a transceiver module, which is used to send first information to the first network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access the first service, and the user plane path related to the third network element is used to establish a first user plane connection between the terminal and the fourth network element, the fourth network element is different from the fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection are used for the first service.
  • a transceiver module which is used to send first information to the first network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access the first service, and the user plane path related to the third network element is used to establish
  • the above-mentioned transceiver module is used to execute the relevant steps performed by the second network element in any of the above methods, which will not be repeated here.
  • the user plane connection establishment device also includes at least one of a sending module and a receiving module, the sending module is used to execute the steps related to sending performed by the second network element in any of the above methods, and the receiving module is used to execute the steps related to receiving performed by the second network element in any of the above methods, which are not repeated here.
  • the sending module is used to execute the steps related to sending performed by the second network element in any of the above methods
  • the receiving module is used to execute the steps related to receiving performed by the second network element in any of the above methods, which are not repeated here.
  • the division of the units or modules in the above device is only a division of logical functions, which can be fully or partially integrated into one physical entity or physically separated in actual implementation.
  • the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory.
  • the processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside the device or a memory outside the device.
  • CPU central processing unit
  • microprocessor a microprocessor
  • the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits.
  • the hardware circuits may be understood as one or more processors; for example, in one implementation, the hardware circuits are application-specific integrated circuits (ASICs), and the functions of some or all of the above units or modules may be implemented by designing the logical relationship of the components in the circuits; for another example, in another implementation, the hardware circuits may be implemented by programmable logic devices (PLDs), and Field Programmable Gate Arrays (FPGAs) may be used as an example, which may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured by configuring the configuration files, thereby implementing the functions of some or all of the above units or modules. All units or modules of the above devices may be implemented in the form of software called by the processor, or in the form of hardware circuits, or in the form of software called by the processor, and the remaining part may be implemented in
  • FIG8 is a schematic diagram of the structure of a core network device proposed in an embodiment of the present disclosure.
  • the core network device 80 includes: a first network element 801 and a second network element 802; wherein,
  • a second network element configured to send first information to the first network element, wherein the first information is used to indicate a third network element related to a protocol data unit PDU session, the PDU session is used to access the first service, and the user plane path related to the third network element is used to establish a first user plane connection between the terminal and a fourth network element, the fourth network element is different from the fifth network element, the fifth network element is a network element that has established a second user plane connection with the terminal, and the first user plane connection and/or the second user plane connection is used for the first service;
  • the first network element is used to receive first information sent by the second network element and select a fourth network element according to the first information.
  • the first network element is further used to determine second information based on the first information, wherein the second information is used to indicate information of a fourth network element, and the fourth network element is selected based on the second information.
  • the second information includes at least one of the following: an identifier of a fourth network element; service area information of the fourth network element; service information supported by the fourth network element; a first Internet Protocol IP address of the fourth network element; and a first data network access identifier DNAI of the fourth network element.
  • the first network element is further configured to select a fourth network element based on local configuration information.
  • the local configuration information includes at least one of the following: an identifier of the candidate network element; service area information of the candidate network element; service information supported by the candidate network element; a candidate IP address of the candidate network element; and a candidate DNAI of the candidate network element.
  • the first information includes at least one of the following: an identifier of a third network element; an Internet Protocol IP address range accessible to the third network element; a data network access identifier DNAI associated with the third network element; and indication information, wherein the indication information is used to indicate that a third network element has been added.
  • the first service is a user plane positioning service.
  • FIG. 9A is a schematic diagram of the structure of a communication device proposed in an embodiment of the present disclosure, and the communication device 9100 includes one or more processors 9101.
  • the processor 9101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit.
  • the baseband processor may be used to process the communication protocol and the communication data
  • the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a program, and process the data of the program.
  • the processor 9101 is used to call instructions so that the communication device 9100 executes any of the above methods.
  • the communication device 9100 further includes one or more memories 9102 for storing instructions.
  • the memory 9102 may also be outside the communication device 9100.
  • the communication device 9100 further includes one or more transceivers 9103.
  • the communication steps such as sending and receiving in the above method are performed by the transceiver 9103, and the other steps are performed by the processor 9101.
  • the transceiver may include a receiver and a transmitter, and the receiver and the transmitter may be separate or integrated.
  • the terms such as transceiver, transceiver unit, transceiver, transceiver circuit, etc. may be replaced with each other, the terms such as transmitter, transmission unit, transmitter, transmission circuit, etc. may be replaced with each other, and the terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.
  • the communication device 9100 further includes one or more interface circuits 9104, which are connected to the memory 9102.
  • the interface circuit 9104 can be used to receive signals from the memory 9102 or other devices, and can be used to send signals to the memory 9102 or other devices.
  • the interface circuit 9104 can read instructions stored in the memory 9102 and send the instructions to the processor 9101.
  • the communication device 9100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 9100 described in the present disclosure is not limited thereto, and the structure of the communication device 9100 may not be limited by FIG. 9A.
  • the communication device may be an independent device or may be part of a larger device.
  • the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.
  • Fig. 9B is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure.
  • the communication device 9100 may be a chip or a chip system
  • the chip 9200 includes one or more processors 9201, and the processor 9201 is used to call instructions so that the chip 9200 executes any of the above methods.
  • the chip 9200 further includes one or more interface circuits 9202, which are connected to the memory 9203.
  • the interface circuit 9202 can be used to receive signals from the memory 9203 or other devices, and the interface circuit 9202 can be used to send signals to the memory 9203 or other devices.
  • the interface circuit 9202 can read instructions stored in the memory 9203 and send the instructions to the processor 9201.
  • the terms such as interface circuit, interface, transceiver pin, and transceiver can be replaced with each other.
  • the chip 9200 further includes one or more memories 9203 for storing instructions.
  • the memory 9203 may be outside the chip 9200.
  • the present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 9100, the communication device 9100 executes any of the above methods.
  • the storage medium is an electronic storage medium.
  • the storage medium is a computer-readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices.
  • the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a temporary storage medium.
  • the processor is a circuit with signal processing capability.
  • the processor may be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the above hardware circuit may be fixed or reconfigurable, such as a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the process of the processor loading a configuration document to implement the hardware circuit configuration may be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules.
  • it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.
  • ASIC Neural Network Processing Unit
  • NPU Neural Network Processing Unit
  • TPU Tensor Processing Unit
  • DPU Deep Learning Processing Unit
  • the present disclosure also proposes a program product, which, when executed by the communication device 9100, enables the communication device 9100 to execute any of the above methods.
  • the program product is a computer program product.
  • the present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to execute any one of the above methods.
  • the computer program product includes one or more computer programs.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer program can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer program can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated.
  • the available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.
  • a magnetic medium e.g., a floppy disk, a hard disk, a magnetic tape
  • an optical medium e.g., a high-density digital video disc (DVD)
  • DVD high-density digital video disc
  • SSD solid state disk

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Abstract

La présente divulgation concerne un procédé et un appareil d'établissement de connexion de plan d'utilisateur, un dispositif de réseau central, un dispositif de communication, un système de communication et un support de stockage. Le procédé comprend : la réception, par un premier élément de réseau, de premières informations envoyées par un deuxième élément de réseau, les premières informations étant utilisées pour indiquer un troisième élément de réseau associé à une session d'unité de données de protocole (PDU), la session PDU étant utilisée pour accéder à un premier service, un chemin de plan d'utilisateur associé au troisième élément de réseau étant utilisé pour établir une première connexion de plan d'utilisateur entre un terminal et un quatrième élément de réseau, le quatrième élément de réseau étant différent d'un cinquième élément de réseau, le cinquième élément de réseau étant un élément de réseau ayant établi une deuxième connexion de plan d'utilisateur avec le terminal, et la première connexion de plan d'utilisateur et/ou la deuxième connexion de plan d'utilisateur étant utilisées pour le premier service ; et la sélection du quatrième élément de réseau sur la base des premières informations. Selon le procédé de la présente divulgation, lorsque le troisième élément de réseau est ajouté pour la session PDU, l'ajout d'un nouveau quatrième élément de réseau est déclenché pour prendre en charge l'établissement simultané d'une pluralité de connexions de plan d'utilisateur correspondant à la pluralité d'éléments de réseau.
PCT/CN2023/108750 2023-07-21 2023-07-21 Procédé et appareil d'établissement de connexion de plan d'utilisateur, dispositif de réseau central, dispositif de communication, système de communication et support de stockage Pending WO2025020007A1 (fr)

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PCT/CN2023/108750 WO2025020007A1 (fr) 2023-07-21 2023-07-21 Procédé et appareil d'établissement de connexion de plan d'utilisateur, dispositif de réseau central, dispositif de communication, système de communication et support de stockage
CN202380010215.9A CN119678649A (zh) 2023-07-21 2023-07-21 用户面连接建立方法及装置、核心网设备、通信设备、通信系统、存储介质

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