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WO2025020004A1 - Procédés de connectivité simultanée et dispositif et système associés - Google Patents

Procédés de connectivité simultanée et dispositif et système associés Download PDF

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Publication number
WO2025020004A1
WO2025020004A1 PCT/CN2023/108746 CN2023108746W WO2025020004A1 WO 2025020004 A1 WO2025020004 A1 WO 2025020004A1 CN 2023108746 W CN2023108746 W CN 2023108746W WO 2025020004 A1 WO2025020004 A1 WO 2025020004A1
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WO
WIPO (PCT)
Prior art keywords
access node
pdu session
wireless communication
communication method
access
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/108746
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English (en)
Inventor
Xingyue Zhou
Jinguo Zhu
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ZTE Corp
Original Assignee
ZTE Corp
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Filing date
Publication date
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Priority to PCT/CN2023/108746 priority Critical patent/WO2025020004A1/fr
Publication of WO2025020004A1 publication Critical patent/WO2025020004A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/005—Multiple registrations, e.g. multihoming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H04W76/16—Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/14—Backbone network devices

Definitions

  • This document is directed generally to wireless communications, and in particular to 5G communications.
  • a UE may connect a core network via multiple accesses.
  • the multiple accesses can comprise only one 3GPP (3rd Generation Partnership Project) access. That is the UE may connect the core network via one 3GPP access and (at least) one non-3GPP access.
  • the non-3GPP access (es) is not ideal to improve network performance, e.g., capacity, coverage, reliability and QoE (quality of experience) of the network.
  • This document relates to methods, systems, and devices for simultaneous connectivity, and in particular to methods, systems, and devices simultaneous connectivity via two or more 3GPP accesses.
  • the present disclosure relates to a wireless communication method for use in an access and mobility management function (AMF) .
  • the method comprises:
  • a session management function SMF
  • PDU protocol data unit
  • the first identity of the first access node is configured to identify the first access node in the AMF.
  • the wireless communication method further comprises receiving, from the SMF, a first message for the PDU session via the first access node, wherein the first message comprises the first identity.
  • the wireless communication method further comprises transmitting, to the SMF, a second message for the PDU session via the first access node, wherein the second message comprises the first identity.
  • the PDU session supports simultaneous connectivity via a plurality of 3rd generation partner project (3GPP) access networks.
  • 3GPP 3rd generation partner project
  • the wireless communication method further comprises receiving, from a user equipment (UE) of the PDU session via the first access node, a first registration request message indicating a capability of supporting simultaneous connectivity via a plurality of 3GPP access networks.
  • UE user equipment
  • the wireless communication method further comprises transmitting, to the UE via the first access node, a registration accept message indicating that the simultaneous connectivity via the plurality of 3GPP access networks is supported.
  • the first registration request comprises a request type configured to indicate the simultaneous connectivity via the plurality of 3GPP access networks.
  • the plurality of 3GPP access networks has the same radio technology type.
  • the wireless communication method further comprises transmitting, to the SMF, a second PDU session management context create request for the PDU session via a second access node.
  • the first access node and the second access node provide 3GPP accesses.
  • the first access node and the second access node have the same radio technology type.
  • the wireless communication method further comprises receiving, from a UE of the PDU session via the second access node, a second PDU session establishment request for the PDU session via the second access node.
  • the wireless communication method further comprises receiving, from the UE of the PDU session via the second access node, a second registration request indicating a capability of supporting simultaneous connectivity via a plurality of 3GPP access networks.
  • the wireless communication method further comprises transmitting, to the SMF, a context update request for the PDU session via the first access node, wherein the context update request comprises a second identity of a third access node.
  • the present disclosure relates to wireless communication method for use in a session management function (SMF) .
  • the method comprises:
  • PDU session management context create request for a PDU session via a first access node and a first identity of the first access node associated with the first PDU session management context create request
  • session management context of the PDU session via the first access node comprises the first identity of the first access node.
  • the first identity of the first access node is configured to identify the first access node in the AMF.
  • the wireless communication method further comprises transmitting, to the AMF, a first message for the PDU session via the first access node, wherein the first message comprises the first identity.
  • the wireless communication method further comprises receiving, from the AMF, a second message for the PDU session via the first access node, wherein the second message comprises the first identity.
  • the PDU session supports simultaneous connectivity via a plurality of 3rd generation partner project (3GPP) access networks.
  • 3GPP 3rd generation partner project
  • the plurality of 3GPP access networks has the same radio technology type.
  • the wireless communication method further comprises receiving, from the AMF, a second PDU session management context create request for the PDU session via a second access node before receiving the first PDU session management context create request.
  • the first access node and the second access node provide 3GPP accesses.
  • the first access node and the second access node have the same radio technology type.
  • the wireless communication method further comprises:
  • the context update request comprises a second identity of a third access node
  • the wireless communication method further comprises transmitting, to a user plane function, a session modification request for the PDU session, wherein the session modification request comprises the second identity of a third access node.
  • the present disclosure relates to a wireless communication method for use in a user equipment (UE) .
  • the method comprises:
  • AMF access and mobility management function
  • 3GPP 3rd generation partner project
  • the wireless communication method further comprises: receiving, from the AMF, a registration accept message indicating that the simultaneous connectivity via the plurality of 3GPP access networks is supported.
  • the first registration request comprises a request type configured to indicate the simultaneous connectivity via the plurality of 3GPP access networks.
  • the plurality of 3GPP access networks has the same radio technology type.
  • the wireless communication method further comprises: transmitting, to the AMF via the first access node, a first protocol data unit (PDU) session establishment request for a PDU session via the first access node.
  • PDU protocol data unit
  • the wireless communication method further comprises transmitting, to the AMF via a second access node, a second PDU session establishment request for the PDU session via the second access node.
  • the wireless communication method further comprises transmitting, to the AMF via the second access node, a second registration request for the PDU session via the second access node indicating the simultaneous connectivity via the plurality of 3GPP access networks.
  • the first access node and the second access node provide 3GPP accesses.
  • the first access node and the second access node have the same radio technology type.
  • the present disclosure relates to a wireless device.
  • the wireless device comprises:
  • a communication unit configured to transmit, to a session management function (SMF) , a first protocol data unit (PDU) session management context create request for a PDU session via a first access node and a first identity of the first access node associated with the first PDU session management context create request.
  • SMF session management function
  • PDU protocol data unit
  • the wireless device comprises an AMF.
  • the wireless device further comprises a processor configured to perform any of the aforementioned wireless communication methods.
  • the present disclosure relates to wireless device.
  • the wireless device comprises:
  • a communication unit configured to receive, from an access and management function (AMF) , a first protocol data unit (PDU) session management context create request for a PDU session via a first access node and a first identity of the first access node associated with the first PDU session management context create request, and
  • AMF access and management function
  • PDU protocol data unit
  • a processor configured to generate session management context of the PDU session via the first access node, wherein the session management context of the PDU session via the first access node comprises the first identity of the first access node.
  • the wireless device comprises an SMF.
  • the processor is further configured to perform any of the aforementioned wireless communication methods.
  • the present disclosure relates to a user equipment (UE) .
  • the UE comprises:
  • a communication unit configured to transmitting, to an access and mobility management function (AMF) via a first access node, a first registration request, wherein the registration request indicating a simultaneous connectivity via a plurality of 3rd generation partner project (3GPP) access networks.
  • AMF access and mobility management function
  • 3GPP 3rd generation partner project
  • Various embodiments may preferably implement the following feature:
  • the UE further comprises a processor configured to perform any of the aforementioned wireless communication methods.
  • the present disclosure relates to a computer program product comprising a computer-readable program medium code stored thereupon, the code, when executed by a processor, causing the processor to implement a wireless communication method recited in any one of foregoing methods.
  • the present disclosure is not limited to the exemplary embodiments and applications described and illustrated herein. Additionally, the specific order and/or hierarchy of steps in the methods disclosed herein are merely exemplary approaches. Based upon design preferences, the specific order or hierarchy of steps of the disclosed methods or processes can be re-arranged while remaining within the scope of the present disclosure. Thus, those of ordinary skill in the art will understand that the methods and techniques disclosed herein present various steps or acts in a sample order, and the present disclosure is not limited to the specific order or hierarchy presented unless expressly stated otherwise.
  • FIG. 1 shows a schematic diagram of a network according to an embodiment of the present disclosure.
  • FIG. 2 shows a schematic diagram of a procedure according to an embodiment of the present disclosure.
  • FIG. 3 shows a schematic diagram of a procedure according to an embodiment of the present disclosure.
  • FIG. 4 shows a schematic diagram of a procedure according to an embodiment of the present disclosure.
  • FIG. 5 shows a schematic diagram of a procedure according to an embodiment of the present disclosure.
  • FIG. 6 shows an example of a schematic diagram of a wireless terminal according to an embodiment of the present disclosure.
  • FIG. 7 shows an example of a schematic diagram of a wireless network node according to an embodiment of the present disclosure.
  • FIG. 8 shows a flowchart of a method according to an embodiment of the present disclosure.
  • FIG. 9 shows a flowchart of a method according to an embodiment of the present disclosure.
  • FIG. 10 shows a flowchart of a method according to an embodiment of the present disclosure.
  • the UE may connect the core network via one 3GPP access and another additional 3GPP access or the UE may support connecting the core network via more than two 3GPP accesses simultaneously.
  • the two or more 3GPP accesses can be the same RAT (radio access technology) type or different RAT (radio access technology) types.
  • FIG. 1 shows a schematic diagram of a network (architecture) according to an embodiment of the present disclosure.
  • the UE connects/communicates with network functions (i.e., AMF (access and mobility management function) , SMF (session management function) , PCF (policy control function) and UPF (user plane function) ) via two access nodes (e.g., base stations, gNBs or RAN (radio access network) nodes) .
  • the access nodes have the same RAT type (i.e., NR (new radio) ) .
  • the network (functions) may not be able to distinguish related requests from the UE via different access nodes.
  • RAT types supported by the network comprise at least one of those shown in the following table1:
  • FIG. 2 shows a schematic diagram of a procedure according to an embodiment of the present disclosure.
  • the procedure shown in FIG. 2 may be used for UE-requested PDU Session Establishment for non-roaming and roaming with local breakout.
  • the detailed steps of the procedure can be referred to clause 4.3.2.2.1 of 3GPP TS 23.502, e.g., V.
  • the UE may initiate the procedure shown in FIG. 2 via a 3GPP access using the NR.
  • the UE in step 3 transmits the Nsmf_PDUSession_CreateSMContext Request as a new PDU session request.
  • the Nsmf_PDUSession_CreateSMContext Request includes: SUPI, selected DNN, UE requested DNN, S-NSSAI (s) , PDU Session ID, AMF ID, Request Type, [PCF ID, Same PCF Selection Indication] , Priority Access, [Small Data Rate Control Status] , N1 SM container (PDU Session Establishment Request) , User location information, Access Type, RAT Type, PEI, GPSI, UE presence in LADN service area, Subscription For PDU Session Status Notification, DNN Selection Mode, Trace Requirements, Control Plane CIoT 5GS Optimisation indication, Control Plane Only indicator, Satellite backhaul category, GEO Satellite ID, [PVS FQDN (s) and/or PVS IP address (es) , Onboarding Indication] , Disaster Roaming service indication.
  • the N2 PDU Session Response transmitted from RAN to AMF comprises PDU Session ID, Cause, N2 SM information (PDU Session ID, AN Tunnel Info, List of accepted/rejected QFI (s) , User Plane Enforcement Policy Notification, TL-Container) ) .
  • N2 SM information is conveyed to SMF in Nsmf_PDUSession_UpdateSMContext Request message.
  • the AN tunnel Info is the user plane tunnel end point information on RAN side. In other words, the SMF is not aware of the AN tunnel info until step 15 of FIG. 2 is done.
  • the SMF in step 3 of the another registration procedure may consider that this PDU session establishment request intends to create the PDU session context which overlaps with an existing PDU session (established via another 3GPP access) .
  • the SMF may overwrite the existing PDU session or reject this PDU session request, e.g., because the AN tunnel info has not been provided to the SMF in step 3.
  • access may refer to access node or access network and vice versa.
  • RAN radio access network
  • AN access network
  • info refers to “information” .
  • FIG. 3 shows a schematic diagram of a procedure according to an embodiment of the present disclosure.
  • the AMF indicates the SMF a PDU session establishment request from a UE via one 3GPP access node (e.g., RAN B) which uses the same RAT type with another access node (e.g., RAN A) .
  • the term “RAN” refers to the access network with RAT types which are supported in 3GPP. That is, the RAN in FIG. 3 provides the 3GPP access to the UE.
  • the procedure of FIG. 3 comprises the following steps:
  • Step 301 The UE initiates a registration procedure (e.g., the procedure shown in FIG. 2) to the network via the RAN A.
  • the registration request message e.g., PDU Session Establishment Request
  • the UE indicates its capability to support simultaneous connectivity via two or more access networks (e.g., two or more 3GPP access networks) .
  • the indicator/indication of the capability can include at least one of:
  • the AMF indicates to the UE that the simultaneous connectivity via two or more (3GPP) access networks is supported/allowed.
  • the UE establishes a PDU session via the RAN A.
  • the AMF selects an SMF supporting the simultaneous connectivity via two or more (3GPP) access networks.
  • Step 302 The UE initiates a registration procedure to the network via the RAN B.
  • the RAN B has the same access type (e.g., 3GPP access) and/or the same RAT type (e.g., NR) with the RAN A.
  • the UE indicates to the network/AMF that this is a registration request for dual/simultaneous steering/connectivity.
  • a new/dedicated registration request type may be used to represent this indication/indicator.
  • Step 303 The UE initiates a PDU session establishment procedure via the RAN B.
  • the AMF verifies that the corresponding PDU session establishment request is a PDU session establishment request via the RAN B and that the RAN B has the same access type and/or the same RAT type with the RAN A.
  • Step 304 The AMF selects the same SMF as in step 301.
  • Step 305 The AMF indicates to the SMF that the PDU session establishment request is via an addition/second (3GPP) access.
  • addition or “second” is considered as an example of an identity for the RAN B.
  • Each access node e.g., the RAN A or the RAN B
  • the same access type and/or the same RAT type is identified with this local unique identity by the AMF.
  • Steps 306 to 308 The SMF creates related SM context based on the PDU session request.
  • the created SM context includes the identity of the RAN B as mentioned in step 305.
  • Step 309 The identity of the RAN B is included in Namf_Communication_N1N2MessageTransfer message transmitted from the SMF to the AMF.
  • the AMF is able to determine which access towards the UE is used based on the PDU session ID, access type and the identity of the access node (with the same access type and/or the same RAT type) .
  • Steps 310 to 313 The identity of the RAN B is included in Nsmf_PDUSession_UpdateSMContext Request transmitted from the AMF to the SMF. Based on the identity of the RAN B, the SMF acknowledges that the AN (RAN) tunnel information in the Nsmf_PDUSession_UpdateSMContext Request is for the RAN B. The SMF sends the AN tunnel information of the RAN B as well as the identity of the RAN B to the UPF.
  • RAN RAN tunnel information in the Nsmf_PDUSession_UpdateSMContext Request
  • FIG. 4 shows a schematic diagram of a procedure according to an embodiment of the present disclosure.
  • the embodiment shown in FIG. 4 shows the procedure of a handover when there is simultaneous connectivity via two or more (3GPP) access networks, e.g., when the UE has established two/dual connectivity via RAN A and RAN C respectively and a handover from the RAN A to RAN B takes place.
  • the procedure comprises the following steps:
  • Step 401 The RAN B sends an N2 Path Switch Request message to an AMF to inform that the UE has moved to a new target cell and provides a List Of PDU Sessions To Be Switched.
  • AN Tunnel Info for each PDU Session to be switched is included in the N2 SM Information.
  • Step 402 The PDU sessions to be switched were identified with the identity of the RAN A by the AMF. Since the PDU sessions are to be switched to the RAN B, the AMF changes the RAN identity associated with the PDU sessions from the identity of the RAN A to the identity of the RAN B and includes the identity of the RAN B in the Nsmf_PDUSession_UpdateSMContext Request.
  • Steps 403 to 406 For the PDU Sessions that are associated with the RAN B, the SMF sends an N4 Session Modification Request message to the UPF. The SMF notifies the UPF that the updated identity of the access node associated with the switched PDU sessions.
  • FIG. 5 shows a schematic diagram of a procedure according to an embodiment of the present disclosure.
  • the AMF indicates the SMF that a PDU session establishment request from a UE is via a specific access node.
  • RAN refers to an access network with RAT types which are supported in the above table (e.g., 3GPP RAT types) .
  • Step 501 The UE initiates a registration procedure to the network via the RAN.
  • the UE indicates to the network/AMF that this is a registration request for dual steering/connectivity.
  • a new/dedicated registration request type may be used to represent this purpose.
  • Step 502 The UE initiates a PDU session establishment procedure.
  • Step 503 The AMF selects the SMF based on the indicator received in step 501.
  • Step 504 The AMF uses an identity to indicate to the SMF that the PDU session establishment request is via an access node.
  • the identity is used to represent the RAN node.
  • the identity is locally unique in the AMF.
  • Steps 505 to 507 The SMF creates related SM context based on the PDU session request.
  • the created SM context includes the identity of the RAN.
  • Step 508 The identity of RAN is included in Namf_Communication_N1N2MessageTransfer message transmitted from the SMF to the AMF.
  • the AMF is able to determine which access towards the UE is based on the PDU session ID, access type and the identity of the access node.
  • Steps 509 to 512 The identity of the RAN is included in Nsmf_PDUSession_UpdateSMContext Request transmitted from the AMF to the SMF.
  • FIG. 6 relates to a schematic diagram of a wireless terminal 60 according to an embodiment of the present disclosure.
  • the wireless terminal 60 may be a user equipment (UE) , a mobile phone, a laptop, a tablet computer, an electronic book or a portable computer system and is not limited herein.
  • the wireless terminal 60 may include a processor 600 such as a microprocessor or Application Specific Integrated Circuit (ASIC) , a storage unit 610 and a communication unit 620.
  • the storage unit 610 may be any data storage device that stores a program code 612, which is accessed and executed by the processor 600.
  • Embodiments of the storage unit 610 include but are not limited to a subscriber identity module (SIM) , read-only memory (ROM) , flash memory, random-access memory (RAM) , hard-disk, and optical data storage device.
  • SIM subscriber identity module
  • ROM read-only memory
  • RAM random-access memory
  • the communication unit 620 may a transceiver and is used to transmit and receive signals (e.g., messages or packets) according to processing results of the processor 600. In an embodiment, the communication unit 620 transmits and receives the signals via at least one antenna 622 shown in FIG. 6.
  • the storage unit 610 and the program code 612 may be omitted and the processor 600 may include a storage unit with stored program code.
  • the processor 600 may implement any one of the steps in exemplified embodiments on the wireless terminal 60, e.g., by executing the program code 612.
  • the communication unit 620 may be a transceiver.
  • the communication unit 620 may as an alternative or in addition be combining a transmitting unit and a receiving unit configured to transmit and to receive, respectively, signals to and from a wireless network node (e.g., a base station) .
  • a wireless network node e.g., a base station
  • FIG. 7 relates to a schematic diagram of a wireless network node 70 according to an embodiment of the present disclosure.
  • the wireless network node 70 may be a satellite, a base station (BS) , a network entity, a Mobility Management Entity (MME) , Serving Gateway (S-GW) , Packet Data Network (PDN) Gateway (P-GW) , a radio access network (RAN) node, a next generation RAN (NG-RAN) node, a gNB, an eNB, a gNB central unit (gNB-CU) , a gNB distributed unit (gNB-DU) a data network, a core network or a Radio Network Controller (RNC) , and is not limited herein.
  • BS base station
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • PDN Packet Data Network Gateway
  • RAN radio access network
  • NG-RAN next generation RAN
  • gNB next generation RAN
  • gNB next generation RAN
  • the wireless network node 70 may comprise (perform) at least one network function such as an access and mobility management function (AMF) , a session management function (SMF) , a user place function (UPF) , a policy control function (PCF) , an application function (AF) , etc.
  • the wireless network node 70 may include a processor 700 such as a microprocessor or ASIC, a storage unit 710 and a communication unit 720.
  • the storage unit 710 may be any data storage device that stores a program code 712, which is accessed and executed by the processor 700. Examples of the storage unit 710 include but are not limited to a SIM, ROM, flash memory, RAM, hard-disk, and optical data storage device.
  • the communication unit 720 may be a transceiver and is used to transmit and receive signals (e.g., messages or packets) according to processing results of the processor 700.
  • the communication unit 720 transmits and receives the signals via at least one antenna 722 shown in FIG. 7.
  • the storage unit 710 and the program code 712 may be omitted.
  • the processor 700 may include a storage unit with stored program code.
  • the processor 700 may implement any steps described in exemplified embodiments on the wireless network node 70, e.g., via executing the program code 712.
  • the communication unit 720 may be a transceiver.
  • the communication unit 720 may as an alternative or in addition be combining a transmitting unit and a receiving unit configured to transmit and to receive, respectively, signals to and from a wireless terminal (e.g., a user equipment or another wireless network node) .
  • a wireless terminal e.g., a user equipment or another wireless network node
  • the UE indicates its capability to support simultaneous connectivity via two or more access networks (e.g., two or more 3GPP access networks) .
  • the indicator of the capability can include at least one of following information:
  • the AMF indicates to the UE that the simultaneous/duel connectivity via two or more (3GPP) access networks is supported/allowed.
  • the UE In the registration request, the UE indicates to the network/AMF that the registration request is for dual steering/connectivity.
  • a new registration type can be defined/introduced to achieve this purpose.
  • the connectivity is configured with an identity which is associated with an access node, e.g., to indicate that the connectivity is established via this access node.
  • the identity of the access node is configured or updated by the AMF and conveyed to SMF.
  • the SMF conveys the identity of the access node to the UPF.
  • the signaling message from the SMF to the AMF includes the identity of the access node, to assistant the AMF to determine the access to which the handling is towards.
  • a wireless device comprising network function (s) refers to the wireless device performing at least part of functionalities of the network function (s) .
  • FIG. 8 shows a flowchart of a method according to an embodiment of the present disclosure.
  • the method shown in FIG. 8 may be used in an AMF (e.g., a wireless device, a wireless device comprising the AMF) and comprises the following step:
  • AMF e.g., a wireless device, a wireless device comprising the AMF
  • Step 801 Transmit, to an SMF, a first PDU session management context create request for a PDU session via a first access node and a first identity of the first access node associated with the first PDU session management context create request.
  • the AMF transmits a first PDU session management context create request for a PDU session via a first access node to the SMF.
  • the AMF also transmits a first identity of the first access node associated with the first PDU session management context create request, to indicate that the first PDU session management context create request is for the PDU session via the first access node. In this way, PDU session context for the PDU session via the first access node can be created/generated.
  • the first identity of the first access node is configured to identify the first access node in the AMF.
  • the AMF receives a first message for the PDU session via the first access node from the SMF.
  • the first message comprises the first identity, e.g., to indicate that the first message is for the PDU session via the first access node.
  • the first message may be an Namf_Communication_N1N2MessageTransfer message.
  • the AMF transmits a second message for the PDU session via the first access node to the SMF.
  • the second message comprises the first identity, e.g., to indicate that the first message is for the PDU session via the first access node.
  • the second message may be a Nsmf_PDUSession_UpdateSMContext Request.
  • the PDU session supports the simultaneous connectivity via a plurality of 3rd generation partner project (3GPP) access networks.
  • 3GPP 3rd generation partner project
  • the AMF receives a first registration request message indicating a capability of supporting simultaneous connectivity via a plurality of 3GPP access networks from a UE (e.g., wireless terminal) .
  • the first registration request may comprise a request type configured to indicate the simultaneous connectivity via the plurality of 3GPP access networks.
  • the AMF transmits a registration accept message to the UE via the first access node.
  • the registration accept message may indicate that the simultaneous connectivity via the plurality of 3GPP access networks is supported.
  • the plurality of 3GPP access networks has the same radio technology type (e.g., NR) .
  • NR radio technology type
  • the AMF receives a first PDU session establishment request for the PDU session via the first access node.
  • the AMF transmits a second PDU session management context create request for the PDU session via a second access node to the SMF.
  • the second PDU session management context create request may be transmitted before the first PDU session management context create request (see, e.g., FIG. 3) .
  • the second PDU session management context create request may be transmitted after the first PDU session management context create request.
  • the SMF is able to acknowledge that the second PDU session management context create request is for the PDU session via the second access node even if the second PDU session management context create request is not transmitted with an identity of the second access node.
  • the second PDU session management context create request is transmitted with the identity of the second access node.
  • the first access node and the second access node provide 3GPP accesses. That is the first access node and the second access node have the same access type “3GPP access” .
  • the first access node and the second access node have the same RAT (e.g., RAT supported by 3GPP) .
  • the AMF receives a second PDU session establishment request for the PDU session via the second access node from the UE of the PDU session via the second access node.
  • the AMF receives a second registration request indicating a capability of supporting simultaneous connectivity via a plurality of 3GPP access networks from the UE.
  • the second registration request may be a new request type indicating the capability of supporting simultaneous connectivity.
  • the AMF transmits a context update request for the PDU session via the first access node to the SMF.
  • the context update request comprises a second identity of a third access node (see, e.g., FIG. 5) .
  • FIG. 9 shows a flowchart of a method according to an embodiment of the present disclosure.
  • the method shown in FIG. 9 may be used in an SMF (e.g., a wireless device or a wireless device comprising the SMF) and comprises:
  • Step 901 Receive, from an AMF, a first PDU session management context create request for a PDU session via a first access node and a first identity of the first access node associated with the first PDU session management context create request.
  • Step 902 Generate session management context of the PDU session via the first access node, wherein the session management context of the PDU session via the first access node comprises the first identity of the first access node.
  • the SMF receives a first PDU session management context create request for a PDU session via a first access node from the AMF.
  • the first PDU session management context create request is received with a first identity of the first access node. That is the first PDU session management context create request is associated with the first identity of the first access node.
  • the SMF acknowledges that the first PDU session management context create request is for the PDU session via the first access node.
  • the SMF therefore generates session management context of the PDU session via the first access node.
  • the session management context of the PDU session via the first access node may comprise the first identity of the first access node.
  • the first identity of the first access node is configured to identify the first access node in the AMF.
  • the SMF transmits a first message for the PDU session via the first access node to the AMF.
  • the first message comprises the first identity, to allow the AMF to know that the first message is for the PDU session via the first access node.
  • the SMF receives a second message for the PDU session via the first access node.
  • the second message comprises the first identity, to indicate that the second message is for the PDU session via the first access node.
  • the PDU session supports simultaneous connectivity via a plurality of (3GPP) access networks.
  • the plurality of (3GPP) access networks has the same radio technology type (e.g., RAT supported by 3GPP) .
  • the SMF receives a context update request for the PDU session via the first access node from the AMF.
  • the context update request comprises a second identity of a third access node.
  • the SMF changes the first identity of the first access node comprised in the session management context of the PDU session via the first access node to the second identity of the third access node.
  • the SMF transmit a session modification request for the PDU session (via the first access node) to a UPF.
  • the session modification request comprises the second identity of a third access node.
  • FIG. 10 shows a flowchart of a method according to an embodiment of the present disclosure.
  • the method shown in FIG. 10 may be used in a UE (e.g., wireless terminal) and comprises:
  • Step 1001 Transmit, to an AMF via a first access node, a first registration request, wherein the registration request indicating a simultaneous connectivity via a plurality of 3GPP access networks.
  • the UE transmits a first registration request to an AMF via a first access node.
  • the registration request indicates a simultaneous connectivity via a plurality of 3GPP access networks.
  • the first registration request comprises or is a request type configured to indicate the simultaneous connectivity via the plurality of 3GPP access networks.
  • the UE receives a registration accept message from the AMF.
  • the registration accept message indicates that the simultaneous connectivity via the plurality of 3GPP access networks is supported.
  • the UE therefore can connect to the network via two or more 3GPP access networks.
  • the plurality of 3GPP access networks has the same RAT (e.g., the RAT supported by 3GPP) .
  • the UE transmits a first PDU session establishment request to the SMF via the first access node, for (establishing) a PDU session via the first access node.
  • the UE further transmits a second PDU session establishment request, to the AMF via a second access node, for the PDU session via the second access node.
  • the UE transmits a second registration request for the PDU session via the second access node to the AMF via the second access node.
  • the second registration request for the PDU session may also indicate the simultaneous connectivity via the plurality of 3GPP access networks.
  • the first access node and the second access node provide 3GPP access networks.
  • the first access node and the second access node have the same RAT (e.g., the RAT supported by 3GPP) .
  • any reference to an element herein using a designation such as “first, “ “second, “ and so forth does not generally limit the quantity or order of those elements. Rather, these designations can be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, a reference to first and second elements does not mean that only two elements can be employed, or that the first element must precede the second element in some manner.
  • any one of the various illustrative logical blocks, units, processors, means, circuits, methods and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., a digital implementation, an analog implementation, or a combination of the two) , firmware, various forms of program or design code incorporating instructions (which can be referred to herein, for convenience, as "software” or a “software unit” ) , or any combination of these techniques.
  • a processor, device, component, circuit, structure, machine, unit, etc. can be configured to perform one or more of the functions described herein.
  • IC integrated circuit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the logical blocks, units, and circuits can further include antennas and/or transceivers to communicate with various components within the network or within the device.
  • a general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, or state machine.
  • a processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration to perform the functions described herein. If implemented in software, the functions can be stored as one or more instructions or code on a computer-readable medium. Thus, the steps of a method or algorithm disclosed herein can be implemented as software stored on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that can be enabled to transfer a computer program or code from one place to another.
  • a storage media can be any available media that can be accessed by a computer.
  • such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • unit refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. Additionally, for purpose of discussion, the various units are described as discrete units; however, as would be apparent to one of ordinary skill in the art, two or more units may be combined to form a single unit that performs the associated functions according to embodiments of the present disclosure.
  • memory or other storage may be employed in embodiments of the present disclosure.
  • memory or other storage may be employed in embodiments of the present disclosure.
  • any suitable distribution of functionality between different functional units, processing logic elements or domains may be used without detracting from the present disclosure.
  • functionality illustrated to be performed by separate processing logic elements, or controllers may be performed by the same processing logic element, or controller.
  • references to specific functional units are only references to a suitable means for providing the described functionality, rather than indicative of a strict logical or physical structure or organization.

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

Abstract

L'invention concerne un procédé de communication sans fil destiné à être utilisé dans une fonction de gestion d'accès et de mobilité (AMF). Le procédé consiste à transmettre, à une fonction de gestion de session (SMF), une première demande de création de contexte de gestion de session d'unité de données de protocole (PDU) pour une session PDU par l'intermédiaire d'un premier noeud d'accès et une première identité du premier noeud d'accès associée à la première demande de création de contexte de gestion de session PDU.
PCT/CN2023/108746 2023-07-21 2023-07-21 Procédés de connectivité simultanée et dispositif et système associés Pending WO2025020004A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111034336A (zh) * 2017-08-11 2020-04-17 Idac控股公司 多个接入网络之间的业务引导和切换
US20230078760A1 (en) * 2021-09-13 2023-03-16 Cable Television Laboratories, Inc. Enhanced multi-access protocol data unit (pdu) session
WO2023076773A1 (fr) * 2021-11-01 2023-05-04 Qualcomm Incorporated Établissement d'une session d'unité de données de protocole à accès multiple avec un seul abonnement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111034336A (zh) * 2017-08-11 2020-04-17 Idac控股公司 多个接入网络之间的业务引导和切换
US20230078760A1 (en) * 2021-09-13 2023-03-16 Cable Television Laboratories, Inc. Enhanced multi-access protocol data unit (pdu) session
WO2023076773A1 (fr) * 2021-11-01 2023-05-04 Qualcomm Incorporated Établissement d'une session d'unité de données de protocole à accès multiple avec un seul abonnement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LENOVO, MOTOROLA MOBILITY, ZTE, BROADCOM, APPLE, ALIBABA, TENCENT, CHINA MOBILE, CONVIDA WIRELESS, DEUTSCHE TELEKOM, NOKIA, NOKIA : "New SID on Access Traffic Steering, Switching and Splitting support in the 5G system architecture; Phase 3", 3GPP DRAFT; S2-2107635, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. Electronic meeting; 20211018 - 20211022, 11 October 2021 (2021-10-11), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052062509 *

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