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WO2024109059A1 - Procédé, dispositif et produit programme informatique pour communication sans fil - Google Patents

Procédé, dispositif et produit programme informatique pour communication sans fil Download PDF

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Publication number
WO2024109059A1
WO2024109059A1 PCT/CN2023/104253 CN2023104253W WO2024109059A1 WO 2024109059 A1 WO2024109059 A1 WO 2024109059A1 CN 2023104253 W CN2023104253 W CN 2023104253W WO 2024109059 A1 WO2024109059 A1 WO 2024109059A1
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WO
WIPO (PCT)
Prior art keywords
nssai
wireless communication
vplmn
updated
communication node
Prior art date
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PCT/CN2023/104253
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English (en)
Inventor
Menghan WANG
Jinguo Zhu
Zhijun Li
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ZTE Corp
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ZTE Corp
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Publication date
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Priority to PCT/CN2023/104253 priority Critical patent/WO2024109059A1/fr
Publication of WO2024109059A1 publication Critical patent/WO2024109059A1/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
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/12—Mobility data transfer between location registers or mobility servers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

Definitions

  • This document is directed generally to wireless communications, and in particular to 5th generation (5G) communications or 6th generation (6G) communications.
  • HPLMN Home Public Land Mobile Network
  • VPLMN Vehicle Land Mobile Network
  • HPLMN refers to the subscriber's home network where their primary subscription is held, responsible for services, billing, and authentication.
  • VPLMN is a network visited by the subscriber while roaming, typically operated by a different provider than their home network. It allows the subscriber to access services while being billed by their home operator.
  • NSSAI Network Slice Selection Assistance Information
  • This document relates to methods, systems, and computer program products for a wireless communication.
  • the wireless communication method includes: receiving, by a first wireless communication node from a second wireless communication node, a slice mapping information update comprising one or more updated pairs of Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, and mapped Home Public Land Mobile Network, HPLMN, S-NSSAI.
  • the wireless communication method includes: transmitting, by a second wireless communication node to a first wireless communication node, a slice mapping information update comprising one or more updated pairs of Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, and mapped Home Public Land Mobile Network, HPLMN, S-NSSAI.
  • the wireless communication method includes: receiving, by a wireless communication terminal from a first wireless communication node, at least one of updated configured Network Slice Selection Assistance Information, NSSAI, or updated allowed NSSAI, wherein the updated configured NSSAI comprises one or more updated pairs of configured Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI and Home Public Land Mobile Network, HPLMN, S-NSSAI mapped to the configured VPLMN S-NSSAI, and the updated allowed NSSAI comprises one or more updated pairs of allowed VPLMN S-NSSAI and HPLMN S-NSSAI mapped to the allowed VPLMN S-NSSAI.
  • the updated configured NSSAI comprises one or more updated pairs of configured Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI and Home Public Land Mobile Network, HPLMN, S-NSSAI mapped to the configured VPLMN S-NSSAI
  • the updated allowed NSSAI comprises one or more updated pairs of allowed
  • the wireless communication method includes: transmitting, by a first wireless communication node to a second wireless communication node, updated Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, for a Protocol Data Unit, PDU, session.
  • VPLMN Visited Public Land Mobile Network
  • S-NSSAI Single Network Slice Selection Assistance Information
  • the wireless communication method includes: receiving, by a second wireless communication node from a first wireless communication node, updated Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, for a Protocol Data Unit, PDU, session.
  • VPLMN Visited Public Land Mobile Network
  • S-NSSAI Single Network Slice Selection Assistance Information
  • the wireless communication method includes: receiving, by a wireless communication terminal from a first wireless communication node, updated Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, and a cause value indicating a PDU session change based on the updated VPLMN S-NSSAI.
  • the wireless communication node includes a communication unit and a processor.
  • the processor is configured to: receive, via the communication unit from a second wireless communication node, a slice mapping information update comprising one or more updated pairs of Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, and mapped Home Public Land Mobile Network, HPLMN, S-NSSAI.
  • the wireless communication node includes a communication unit and a processor.
  • the processor is configured to: transmit, via the communication unit to a first wireless communication node, a slice mapping information update comprising one or more updated pairs of Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, and mapped Home Public Land Mobile Network, HPLMN, S-NSSAI.
  • the wireless communication terminal includes a communication unit and a processor.
  • the processor is configured to: receive, via the communication unit from a first wireless communication node, at least one of updated configured Network Slice Selection Assistance Information, NSSAI, or updated allowed NSSAI, wherein the updated configured NSSAI comprises one or more updated pairs of configured Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI and Home Public Land Mobile Network, HPLMN, S-NSSAI mapped to the configured VPLMN S-NSSAI, and the updated allowed NSSAI comprises one or more updated pairs of allowed VPLMN S-NSSAI and HPLMN S-NSSAI mapped to the allowed VPLMN S-NSSAI.
  • the updated configured NSSAI comprises one or more updated pairs of configured Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI and Home Public Land Mobile Network, HPLMN, S-NSSAI mapped to the configured VPLMN S-NSSAI
  • the wireless communication node includes a communication unit and a processor.
  • the processor is configured to: transmit, via the communication unit to a second wireless communication node, updated Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, for a Protocol Data Unit, PDU, session.
  • the wireless communication node includes a communication unit and a processor.
  • the processor is configured to: receive, via the communication unit from a first wireless communication node, updated Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, for a Protocol Data Unit, PDU, session.
  • the wireless communication terminal includes a communication unit and a processor.
  • the processor is configured to: receive, via the communication unit from a first wireless communication node, updated Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, and a cause value indicating a PDU session change based on the updated VPLMN S-NSSAI.
  • the first wireless communication node receives from the second wireless communication node at least one of updated configured Network Slice Selection Assistance Information, NSSAI, or updated allowed NSSAI
  • the updated configured NSSAI comprises one or more updated pairs of configured VPLMN S-NSSAI and HPLMN S-NSSAI mapped to the configured VPLMN S-NSSAI
  • the updated allowed NSSAI comprises one or more updated pairs of allowed VPLMN S-NSSAI and HPLMN S-NSSAI mapped to the allowed VPLMN S-NSSAI.
  • the first wireless communication node transmits to the second wireless communication node a response indicating an update of the one or more updated pairs of the VPLMN S-NSSAI and mapped HPLMN S-NSSAI being successful.
  • the first wireless communication node transmits to the second wireless communication node a subscription for a notification of the slice mapping information update comprising one or more updated pairs of the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI.
  • the subscription comprises an identifier (e.g., an URI of the first wireless communication node) of the first wireless communication node to allow the second wireless communication node to transmit the notification of the slice mapping information update comprising one or more updated pairs of the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI to the first wireless communication node.
  • an identifier e.g., an URI of the first wireless communication node
  • the first wireless communication node receives from the second wireless communication node a response indicating a successful subscription for a notification of the slice mapping information update comprising one or more updated pairs of the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI.
  • the first wireless communication node transmitted to a wireless communication terminal based on the slice mapping information update, at least one of updated configured NSSAI or updated allowed NSSAI
  • the updated configured NSSAI comprises one or more updated pairs of configured VPLMN S-NSSAI and HPLMN S-NSSAI mapped to the configured VPLMN S-NSSAI
  • the updated allowed NSSAI comprises one or more updated pairs of allowed VPLMN S-NSSAI and HPLMN S-NSSAI mapped to the allowed VPLMN S-NSSAI.
  • the slice mapping information update triggers the first wireless communication node to transmit, to a wireless communication terminal, at least one of updated configured NSSAI or updated allowed NSSAI
  • the updated configured NSSAI comprises one or more updated pairs of configured VPLMN S-NSSAI and HPLMN S-NSSAI mapped to the configured VPLMN S-NSSAI
  • the updated allowed NSSAI comprises one or more updated pairs of allowed VPLMN S-NSSAI and HPLMN S-NSSAI mapped to the allowed VPLMN S-NSSAI.
  • the first wireless communication node transmits to the second wireless communication node at least one of Home Public Land Mobile Network, HPLMN, S-NSSAI mapped to the updated VPLMN S-NSSAI or a release indication for the PDU session.
  • Home Public Land Mobile Network HPLMN
  • S-NSSAI mapped to the updated VPLMN S-NSSAI or a release indication for the PDU session.
  • the first wireless communication node receives from the second wireless communication node a response comprising SM information (e.g., N2 SM information) to be transmitted to a third wireless communication node (e.g., an (R) AN) including at least one of the updated VPLMN S-NSSAI or the HPLMN S-NSSAI mapped to the updated VPLMN S-NSSAI.
  • SM information e.g., N2 SM information
  • R third wireless communication node
  • the first wireless communication node receives from the second wireless communication node a response comprising SM information (e.g., N1 SM information) to be transmitted to wireless communication terminal including a modification command message (e.g., PDU session modification command message) , and the modification command message comprises at least one of: the updated VPLMN S-NSSAI, the HPLMN S-NSSAI mapped to the updated VPLMN S-NSSAI, or a cause value indicating a PDU session change based on the updated VPLMN S-NSSAI.
  • SM information e.g., N1 SM information
  • modification command message comprises at least one of: the updated VPLMN S-NSSAI, the HPLMN S-NSSAI mapped to the updated VPLMN S-NSSAI, or a cause value indicating a PDU session change based on the updated VPLMN S-NSSAI.
  • the cause value indicates that S-NSSAI of the PDU session is replaced by the updated VPLMN S-NSSAI or indicates that a PDU session re-establishment based on the updated VPLMN S-NSSAI is required.
  • the first wireless communication node transmits to a third wireless communication node (e.g., an (R) AN) at least one of the updated VPLMN S-NSSAI or the HPLMN S-NSSAI mapped to the updated VPLMN S-NSSAI.
  • a third wireless communication node e.g., an (R) AN
  • the first wireless communication node transmits to a wireless communication terminal a modification command message (e.g., PDU session modification command message) , and the modification command message comprises at least one of: the updated VPLMN S-NSSAI, the HPLMN S-NSSAI mapped to the updated VPLMN S-NSSAI, or a cause value indicating a PDU session change based on the updated VPLMN S-NSSAI.
  • a modification command message e.g., PDU session modification command message
  • the modification command message comprises at least one of: the updated VPLMN S-NSSAI, the HPLMN S-NSSAI mapped to the updated VPLMN S-NSSAI, or a cause value indicating a PDU session change based on the updated VPLMN S-NSSAI.
  • the first wireless communication node receives from the second wireless communication node a response comprising a release command message (e.g., PDU session release command message) to be transmitted to a wireless communication terminal, and the release command message comprises at least one of: the updated VPLMN S-NSSAI, the HPLMN S-NSSAI mapped to the updated VPLMN S-NSSAI, or a cause value indicating a PDU session change based on the updated VPLMN S-NSSAI.
  • a release command message e.g., PDU session release command message
  • the cause value indicates that a PDU session re-establishment based on the updated VPLMN S-NSSAI is required.
  • the first wireless communication node transmits to a wireless communication terminal a release command message (e.g., PDU session release command message) , and the release command message comprises at least one of: the updated VPLMN S-NSSAI, the HPLMN S-NSSAI mapped to the updated VPLMN S-NSSAI, or a cause value indicating a PDU session change based on the updated VPLMN S-NSSAI.
  • a release command message e.g., PDU session release command message
  • the release command message comprises at least one of: the updated VPLMN S-NSSAI, the HPLMN S-NSSAI mapped to the updated VPLMN S-NSSAI, or a cause value indicating a PDU session change based on the updated VPLMN S-NSSAI.
  • the updated VPLMN S-NSSAI and the cause value are transmitted in a modification command message (e.g., PDU session modification command message) for a PDU session or transmitted in a release command message (e.g., PDU session release command message) for the PDU session.
  • a modification command message e.g., PDU session modification command message
  • a release command message e.g., PDU session release command message
  • the wireless communication terminal updates the S-NSSAI of a PDU session in response to the cause value indicating that S-NSSAI of the PDU session is replaced by the updated VPLMN S-NSSAI, and the wireless communication terminal releases the S-NSSAI of a PDU session in response to the cause value indicating that a PDU session re-establishment based on the updated VPLMN S-NSSAI is required.
  • 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 a schematic diagram of a procedure according to an embodiment of the present disclosure.
  • FIG. 7 shows an example of a schematic diagram of a wireless communication terminal according to an embodiment of the present disclosure.
  • FIG. 8 shows an example of a schematic diagram of a wireless communication node according to an embodiment of the present disclosure.
  • FIGs. 9 to 14 show flowcharts of wireless communication methods according to some embodiments of the present disclosure.
  • FIG. 1 shows a schematic diagram of 5G System (5GS) architecture according to some embodiments of the present disclosure.
  • the 5GS architecture includes the following network functions (NFs) :
  • UE User Equipment
  • AMF Access and Mobility Management Function
  • This NF includes functionalities such as UE Mobility Management, Reachability Management, Connection Management, and Registration Management.
  • the AMF terminates the RAN control plane (CP) interface N2 and the NAS (Non-Access Stratum) interface N1, provides NAS ciphering and integrity protection, and distributes the SM (Session Management) NAS to the proper SMFs (Session Management Functions) via N11 interface.
  • CP RAN control plane
  • NAS Non-Access Stratum
  • SMFs Session Management Functions
  • UDM Unified Data Management
  • This NF manages the subscription profile for the UEs.
  • the subscription data is stored in the Unified Data Repository (UDR) .
  • the subscription information includes the network slice-related subscription data used for Mobility Management and Session Management.
  • the AMF and SMF retrieve the subscription data from the UDM.
  • NSSF Network Slice Selection Function
  • This NF supports the following functionality: selecting the set of Network Slice instances serving the UE; determining the Allowed NSSAI (Network Slice Selection Assistance Information) and, if needed, the mapping to the HPLMN (Home Public Land Mobile Network) S-NSSAIs (Single Network Slice Selection Assistance Information) ; determining the configured NSSAI and, if needed, the mapping to the HPLMN S-NSSAIs; determining the AMF Set to be used to serve the UE, or, based on configuration, a list of candidate AMF (s) , possibly by querying the Network Repository Function (NRF) .
  • NRF Network Repository Function
  • This NF includes the following functionalities: session establishment, modification, and release; UE IP address allocation and management; selection and control of user plane (UP) function, etc.
  • UP user plane
  • UPF User Plane Function
  • This NF serves as an anchor point for intra-/inter-radio access technology (RAT) mobility and as the external PDU (Packet Data Unit) session point of interconnect to the Data Network (DN) .
  • the UPF also routes and forwards the data packet according to the indication from the SMF. It also buffers the downlink (DL) data when the UE is in idle mode.
  • RAT intra-/inter-radio access technology
  • DN Data Network
  • NRF Network Repository Function
  • the VPLMN S-NSSAI is associated with the mapped HPLMN S-NSSAI.
  • the NF service consumer such as AMF, may invoke NSSF service to retrieve the VPLMN S-NSSAI associated with the HPLMN S-NSSAI during EPS (Evolved Packet System) to 5GS Mobility Registration Procedure (Idle State) using the N26 interface or during EPS to 5GS handover procedure using the N26 interface or during idle state Mobility Registration Procedure in 5GS or during the handover procedure in 5GS.
  • EPS Evolved Packet System
  • 5GS Mobility Registration Procedure Idle State
  • mapping information between the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI is changed, for example, if the VPLMN S-NSSAI associated with the mapped HPLMN S-NSSAI is no longer supported due to deployment implementation, another VPLMN S-NSSAI is associated with the HPLMN S-NSSAI. It might be unclear how the NSSF informs the AMF about the updated mapping information between the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI.
  • Some embodiments of the present disclosure provide methods to support the NSSF in notifying the NF service consumer, such as AMF, about the updated mapping information between the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI.
  • mapping information between the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI is changed, for example, if the VPLMN S-NSSAI associated with the mapped HPLMN S-NSSAI is no longer supported due to deployment implementation, another VPLMN S-NSSAI is associated with the HPLMN S-NSSAI.
  • In some embodiments of the present disclosure provide methods to proactively update the slice mapping information between the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the updated VPLMN S-NSSAI) .
  • This aspect provides a method to enable the NSSF to proactively update the slice mapping information between the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI to the AMF.
  • the AMF may update the allowed NSSAI and/or configured NSSAI accordingly to the UE.
  • the AMF may provide the updated VPLMN S-NSSAI and the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the updated VPLMN S-NSSAI) to the SMF for the existing PDU session in the local breakout roaming case.
  • the SMF decides to initiate the PDU session modification procedure and provides the new S-NSSAI to the (R) AN ( (radio) access network) and provides the new S-NSSAI and a cause value to the UE.
  • the AMF may provide the updated VPLMN S-NSSAI and the mapped HPLMN S-NSSAI to the SMF for the existing PDU session in the local breakout roaming case.
  • the SMF decides to initiate the PDU session release procedure and provides the new (e.g., updated) S-NSSAI and a cause value to the UE so that the UE can re-establish the PDU session on the new S-NSSAI.
  • the AMF may provide the updated VPLMN S-NSSAI and the mapped HPLMN S-NSSAI to the V-SMF (visited-SMF) for the existing PDU session in the home-routed roaming case.
  • the V-SMF provides the new (e.g., updated) HPLMN S-NSSAI to the H-SMF (home-SMF) .
  • the H-SMF or the V-SMF decides to initiate the PDU session modification procedure and provides the new S-NSSAI to the (R) AN and provides the new (e.g., updated) S-NSSAI and a cause value to the UE.
  • the AMF may provide the updated VPLMN S-NSSAI and the mapped HPLMN S-NSSAI to the V-SMF for the existing PDU session in the home-routed roaming case.
  • the V-SMF provides the new (e.g., updated) HPLMN S-NSSAI to the H-SMF.
  • the H-SMF or the V-SMF decides to initiate the PDU session release procedure and provides the new (e.g., updated) S-NSSAI and a cause value to the UE so that the UE can re-establish the PDU session on the new S-NSSAI.
  • FIG. 2 shows a schematic diagram of a procedure according to an embodiment of the present disclosure.
  • the procedure includes at least one of the following operations.
  • the AMF invokes an NSSF service to subscribe a notification of any changes in the mapping information between the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI, where the VPLMN S-NSSAI is supported by the AMF.
  • the AMF provides an identifier (e.g., a callback URI (Uniform Resource Identifier) to the NSSF so that the NSSF can use the identifier (e.g., the callback URI) to notify the updated mapping information between the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI to the AMF.
  • a callback URI Uniform Resource Identifier
  • the NSSF service used to subscribe a notification of any changes in the mapping information between the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI may be the Nnssf_NSSAIAvailability service, the Nnssf_NSSelection service, or a new service dedicated for the network slice mapping information.
  • the NSSF creates the required subscription and return to the AMF a response message containing an indication indicating the status of the created subscription.
  • the support of network slice in the serving PLMN is updated (e.g., the VPLMN S-NSSAI is no longer supported due to deployment implementation) , and the HPLMN S-NSSAI is mapped to another VPLMN S-NSSAI.
  • VPLMN S-NSSAI 1 is mapped to HPLMN S-NSSAI A. For some reason VPLMN S-NSSAI 1 is no longer mapped to HPLMN S-NSSAI A and VPLMN S-NSSAI 2 is mapped to HPLMN S-NSSAI A.
  • the NSSF provides VPLMN S-NSSAI 2 and the mapped HPLMN S-NSSAI A to the AMF.
  • the NSSF notifies the AMF that the network slice mapping information is updated.
  • the notification (e.g., a slice mapping information update) includes a subscription ID indicating a subscription which generates the notification.
  • the notification includes the updated network slice mapping information which includes one or more updated pairs of the updated VPLMN S-NSSAI and the associated mapped HPLMN S-NSSAI.
  • the NSSF may also provide at least one of the updated configured NSSAI including the updated mapping information between one or more updated pairs of the VPLMN S-NSSAI and the associated mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the VPLMN S-NSSAI) and/or the updated allowed NSSAI including the updated mapping information between one or more updated pairs of the VPLMN S-NSSAI and the associated mapped HPLMN S-NSSAI to the AMF.
  • the updated configured NSSAI including the updated mapping information between one or more updated pairs of the VPLMN S-NSSAI and the associated mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the VPLMN S-NSSAI) and/or the updated allowed NSSAI including the updated mapping information between one or more updated pairs of the VPLMN S-NSSAI and the associated mapped HPLMN S-NSSAI to the AMF.
  • the AMF updates the stored network slice mapping information between the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI according to the received notification.
  • the AMF may also update at least one of: the allowed NSSAI (if received from the NSSF) stored by the AMF according to the updated configured NSSAI received from the NSSF and/or the configured NSSAI (if received from the NSSF) stored by the AMF according to the updated configured NSSAI received from the NSSF.
  • the AMF transmit a response to the NSSF, and the response indicates the update is successful.
  • the AMF may transmit to the UE at least one of: the updated allowed NSSAI including the updated mapping information between one or more updated pairs of the VPLMN S-NSSAI and the associated mapped HPLMN S-NSSAI and/or the updated configured NSSAI including the updated mapping information between one or more updated pairs of the VPLMN S-NSSAI and the associated mapped HPLMN S-NSSAI.
  • the AMF may trigger the UE Configuration Update (UCU) procedure to provide at least one of the updated allowed NSSAI including the updated mapping information between one or more updated pairs of the VPLMN S-NSSAI and the associated mapped HPLMN S-NSSAI and/or the updated configured NSSAI including the updated mapping information between one or more updated pairs of the VPLMN S-NSSAI and the associated mapped HPLMN S-NSSAI to the UE.
  • UCU UE Configuration Update
  • FIG. 3 shows a schematic diagram of a procedure according to an embodiment of the present disclosure.
  • the procedure includes at least one of the following operations.
  • the AMF may provide the new (e.g., updated) VPLMN S-NSSAI and optionally the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) to the SMF for the PDU session.
  • the new e.g., updated
  • HPLMN S-NSSAI e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI
  • the AMF may provide the new VPLMN S-NSSAI and optionally the mapped HPLMN S-NSSAI to the SMF by triggering an SMF service, e.g., the Nsmf_PDUSession_UpdateSMContext service.
  • an SMF service e.g., the Nsmf_PDUSession_UpdateSMContext service.
  • the AMF may transmit an indication (e.g., a release PDU session indication) to release the PDU session to the SMF.
  • the SMF sends a message (e.g., an N4 Session Modification Request message) to the UPF to replace the old VPLMN S-NSSAI and optionally the associated mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the old VPLMN S-NSSAI) with the new VPLMN S-NSSAI and optionally the associated mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) .
  • a message e.g., an N4 Session Modification Request message
  • the UPF stores the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) .
  • the SMF may transmit a response to the AMF.
  • the response is transmitted through the Nsmf_PDUSession_UpdateSMContext Response.
  • the response may include at least one of: the new VPLMN S-NSSAI, the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) , and/or a cause value.
  • the response may include first SM information (e.g., N1 SM container) to be provided to the UE and second SM information (e.g., N2 SM information) to be provided to the (R) AN.
  • first SM information e.g., N1 SM container
  • second SM information e.g., N2 SM information
  • the second SM information may include at least one of a PDU Session ID, QFI (s) , QoS Profile (s) , the new VPLMN S-NSSAI and/or the associated mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) .
  • the first SM information may carry the PDU Session Modification Command message.
  • the first SM information (e.g., N1 SM container) may carry at least one of a PDU Session ID, QoS rule (s) , the new VPLMN S-NSSAI, the associated mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) , and/or a cause value (e.g., via the PDU Session Modification Command message) .
  • a PDU Session ID e.g., QoS rule (s)
  • the new VPLMN S-NSSAI e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI
  • a cause value e.g., via the PDU Session Modification Command message
  • the cause value may indicate a PDU session change based on the new VPLMN S-NSSAI. In some embodiments, the cause value may indicate that the S-NSSAI of the PDU session is replaced with the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI. In some embodiments, the cause value may indicate that a PDU session re-establishment based on the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI is required.
  • the SMF determines that the PDU session is to be retained, the SMF includes the new VPLMN S-NSSAI and optionally the associated mapped HPLMN S-NSSAI and a cause value indicating that the S-NSSAI of the PDU session is replaced with the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI in the second SM information (e.g., in the PDU Session Modification Command message provided to the UE) .
  • the SMF includes the new VPLMN S-NSSAI and optionally the associated mapped HPLMN S-NSSAI and a cause value indicating that the S-NSSAI of the PDU session is replaced with the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI in the second SM information (e.g., in the PDU Session Modification Command message provided to the UE) .
  • the SMF includes the new VPLMN S-NSSAI and optionally the associated mapped HPLMN S-NSSAI and a cause value indicating that a PDU session re-establishment on the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI is required in the second SM information (e.g., in the PDU Session Modification Command message provided to the UE) .
  • SSC Session and Service Continuity
  • the AMF provides the second SM information (e.g., N2 SM information) including the new VPLMN S-NSSAI and optionally the associated mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) to the (R) AN.
  • the (R) AN stores the received new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) for the PDU session.
  • AMF to UE 4.
  • the AMF provides the first SM information (e.g., N1 SM container) including the new VPLMN S-NSSAI and optionally the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) for the PDU session and a cause value to the UE.
  • the new VPLMN S-NSSAI and/or the mapped HPLMN S-NSSAI may be included in the PDU Session Modification Command message.
  • the UE stores the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) for the PDU session.
  • the UE re-establishes a new PDU session on the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) .
  • the UE provides the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) in the PDU session establishment request message to the network (e.g., to the AMF) .
  • the network e.g., to the AMF
  • FIG. 4 shows a schematic diagram of a procedure according to an embodiment of the present disclosure.
  • the procedure includes at least one of the following operations.
  • the AMF may provide the new (e.g., updated) VPLMN S-NSSAI and optionally the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) to the SMF.
  • the AMF may provide the new VPLMN S-NSSAI and optionally the mapped HPLMN S-NSSAI to the SMF by triggering an SMF service, e.g., the Nsmf_PDUSession_UpdateSMContext service.
  • the AMF may transmit an indication (e.g., a release PDU session indication) to release the PDU session to the SMF.
  • an indication e.g., a release PDU session indication
  • the SMF if the PDU session is of SSC mode 1 or SSC mode 2 and if the SMF determines that a new PDU session is to be established on the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) , the SMF initiates a PDU session release procedure.
  • the SMF initiates a PDU session release procedure.
  • the SMF may transmit a response to the AMF.
  • the response is transmitted through the Nsmf_PDUSession_UpdateSMContext Response.
  • the response may include at least one of: the new VPLMN S-NSSAI, the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) , and/or a cause value.
  • the response may include first SM information (e.g., N1 SM container) to be provided to the UE.
  • first SM information e.g., N1 SM container
  • the first SM information may carry the PDU Session Release Command message.
  • the first SM information (e.g., N1 SM container) may carry at least one of a PDU Session ID, QoS rule (s) , the new VPLMN S-NSSAI, the associated mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) , and/or a cause value (e.g., via the PDU Session Modification Command message) .
  • a PDU Session ID e.g., QoS rule (s)
  • the new VPLMN S-NSSAI e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI
  • a cause value e.g., via the PDU Session Modification Command message
  • the cause value may indicate a PDU session change based on the new VPLMN S-NSSAI.
  • the cause value may indicate that a PDU session re-establishment based on the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI is required.
  • the AMF provides the first SM information (e.g., N1 SM container) including the new VPLMN S-NSSAI and optionally the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) for the PDU session and a cause value to the UE.
  • the new VPLMN S-NSSAI and/or the mapped HPLMN S-NSSAI may be included in the PDU Session Release Command message.
  • the UE re-establishes a new PDU session on the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) .
  • the UE provides the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI (e.g., the HPLMN S-NSSAI mapped to the new VPLMN S-NSSAI) in the PDU session establishment request message to the network (e.g., to the AMF) .
  • the network e.g., to the AMF
  • FIG. 5 shows a schematic diagram of a procedure according to an embodiment of the present disclosure.
  • the procedure includes at least one of the following operations.
  • the AMF in the home-routed roaming case, if there is an existing PDU session associated with the old VPLMN S-NSSAI and the mapped HPLMN S-NSSAI, the AMF provides the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI to the V-SMF by triggering V-SMF service, e.g., the Nsmf_PDUSession_UpdateSMContext service.
  • V-SMF service e.g., the Nsmf_PDUSession_UpdateSMContext service.
  • the AMF determines that the current PDU session cannot be retained (e.g., the current V-SMF cannot support the new VPLMN S-NSSAI) , the AMF includes a release PDU session indication.
  • the V-SMF if a new mapped HPLMN S-NSSAI for the PDU session is received from the AMF, the V-SMF provides the new mapped HPLMN S-NSSAI to the H-SMF by invoking an H-SMF service.
  • the H-SMF service may be the Nsmf_PDUSession_Update Request service.
  • the Nsmf_PDUSession_Update Request service may include an SM (session management) context ID, (optional) old HPLMN S-NSSAI, new HPLMN S-NSSAI, and a release indication.
  • the V-SMF also forwards the PDU session release indication if the V-SMF receives it from the AMF.
  • the H-SMF determines to retain the PDU session, the H-SMF includes the new HPLMN S-NSSAI and a cause value indicating that the PDU session is to be retained on the new HPLMN S-NSSAI in e.g., the Nsmf_PDUSession_Update Request message to the V-SMF.
  • the H-SMF includes the new HPLMN S-NSSAI and a cause value indicating that a new PDU session re-establishment on the new HPLMN S-NSSAI is required in e.g., the Nsmf_PDUSession_Update Request message to the V-SMF.
  • the H-SMF updates the H-UPF with the new HPLMN S-NSSAI. In some embodiments, the H-UPF stores the new HPLMN S-NSSAI for the PDU session.
  • the V-SMF transmits a response to AMF through e.g., the Nsmf_PDUSession_UpdateSMContext Response.
  • the response includes the N2 SM information and the N1 SM container.
  • the N2 SM information includes a PDU Session ID, QFI (s) , QoS Profile (s) , and/or S-NSSAI.
  • the N1 SM container includes a PDU Session Modification Command including a PDU Session ID, QoS rule (s) , S-NSSAI, and/or a cause value.
  • the N2 SM information carries information that the AMF may provide to the (R) AN.
  • the S-NSSAI in N2 SM information is set to the new VPLMN S-NSSAI and optionally the associated mapped HPLMN S-NSSAI.
  • the N1 SM container carries the PDU Session Modification Command that the AMF may provide to the UE.
  • the V-SMF includes the new VPLMN S-NSSAI and possibly the associated mapped HPLMN S-NSSAI and a cause value indicating that the S-NSSAI of the PDU session is replaced with the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI.
  • the V-SMF includes the new HPLMN S-NSSAI and optionally the associated VPLMN S-NSSAI and a cause value indicating that the HPLMN S-NSSAI of the PDU session is replaced by the new HPLMN S-NSSAI in the PDU Session Modification Command message to the UE.
  • the V-SMF includes both the new VPLMN S-NSSAI and the new HPLMN S-NSSAI and a cause value indicating that both the VPLMN S-NSSAI and the HPLMN S-NSSAI of the PDU session are replaced by the new VPLMN S-NSSAI and new HPLMN S-NSSAI in the PDU Session Modification Command message to the UE.
  • the V-SMF sets the S-NSSAI in N2 SM information to the new VPLMN S-NSSAI and optionally the new HPLMN S-NSSAI sent to the (R)AN.
  • the V-SMF includes the new VPLMN S-NSSAI and/or the new HPLMN S-NSSAI and a cause value indicating that a PDU session re-establishment on the new VPLMN S-NSSAI and/or the new HPLMN S-NSSAI is required in the PDU Session Modification Command message to the UE.
  • the AMF provides the N2 SM information including the new VPLMN S-NSSAI and optionally the associated mapped HPLMN S-NSSAI to the (R) AN.
  • the (R) AN stores the received new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI for the PDU session.
  • the AMF provides the PDU Session Modification Command message including the new VPLMN S-NSSAI and/or the new mapped HPLMN S-NSSAI and a cause value to the UE.
  • the UE if the cause value indicates that the S-NSSAI of the PDU session is replaced with the new VPLMN S-NSSAI and/or the mapped HPLMN S-NSSAI, the UE stores the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI for the PDU session. In some embodiments, if the cause value indicates that a PDU session re-establishment on the new VPLMN S-NSSAI and/or the mapped HPLMN S-NSSAI is required, the UE re-establishes a new PDU session on the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI. In some embodiments, the UE provides the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI in the PDU session establishment request message.
  • FIG. 6 shows a schematic diagram of a procedure according to an embodiment of the present disclosure.
  • the procedure includes at least one of the following operations.
  • the AMF in the home-routed roaming case, if there is an existing PDU session associated with the old VPLMN S-NSSAI and the mapped HPLMN S-NSSAI, the AMF provides the new VPLMN S-NSSAI and the mapped HPLMN S-NSSAI to the V-SMF by triggering V-SMF service, e.g., the Nsmf_PDUSession_UpdateSMContext service.
  • V-SMF service e.g., the Nsmf_PDUSession_UpdateSMContext service.
  • the AMF determines that the current PDU session cannot be retained (e.g., the current V-SMF cannot support the new VPLMN S-NSSAI) , the AMF includes a release PDU session indication.
  • the V-SMF if a new mapped HPLMN S-NSSAI for the PDU session is received from the AMF, the V-SMF provides the new mapped HPLMN S-NSSAI to the H-SMF by invoking an H-SMF service.
  • the H-SMF service may be the Nsmf_PDUSession_Update Request service.
  • the Nsmf_PDUSession_Update Request service may include an SM (session management) context ID, (optional) old HPLMN S-NSSAI, new HPLMN S-NSSAI, and a release indication.
  • the V-SMF also forwards the PDU session release indication if the V-SMF receives it from the AMF.
  • the H-SMF if the PDU session is of SSC mode 1 or SSC mode 2 and if the H-SMF determines that a new PDU session is to be established on the new mapped HPLMN S-NSSAI, the H-SMF initiates a PDU session release procedure.
  • the H-SMF prepares the SM Release PDU Session Command message and initiates the PDU Session Release towards the UE by invoking e.g., the Nsmf_PDUSession_Update Request service operation towards the V-SMF.
  • the Nsmf_PDUSession_Update Request contains necessary information to build the SM Release PDU Session Command by the V-SMF towards the UE.
  • the H-SMF includes the new HPLMN S-NSSAI and a cause value indicating that a new PDU session re-establishment on the new HPLMN S-NSSAI is required.
  • the V-SMF transmits the PDU Session Release Command to the UE.
  • the PDU Session Release Command message also includes the new HPLMN S-NSSAI and/or the new VPLMN S-NSSAI and a cause value indicating that a PDU session re-establishment on the new HPLMN S-NSSAI and/or the new VPLMN S-NSSAI is required.
  • the UE re-establishes a new PDU session based on the new VPLMN S-NSSAI and the new mapped HPLMN S-NSSAI.
  • the UE provides the new VPLMN S-NSSAI and the new mapped HPLMN S-NSSAI in the PDU session establishment request message to the network (e.g., to the AMF) .
  • an AMF performs at least one of the operations below.
  • the AMF sends a subscription of a notification of a slice mapping information update between the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI to the NSSF, wherein:
  • the subscription includes the callback URI with which the NSSF can notify the updated slice mapping information between the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI to the AMF.
  • the AMF receives a response message from the NSSF indicating a successful subscription of the notification of the slice mapping information update between the VPLMN S-NSSAI and the mapped HPLMN S-NSSAI.
  • the AMF receives a notification from the NSSF including one or more updated pairs of the updated VPLMN S-NSSAI and the associated mapped HPLMN S-NSSAI and/or updated configured NSSAI and/or allowed NSSAI.
  • the AMF sends a response message to the NSSF to indicate a successful update of the slice mapping information.
  • the AMF triggers a UCU procedure to provide at least one of the updated configured NSSAI and/or the updated allowed NSSAI to the UE.
  • the AMF sends the new VPLMN S-NSSAI and optionally the mapped HPLMN S-NSSAI and optionally a release indication to the SMF.
  • the AMF receives a response message from the SMF, wherein:
  • the response message includes N2 SM information including new VPLMN S-NSSAI and optionally the mapped HPLMN S-NSSAI;
  • the response message includes a N1 SM container including a PDU session modification command message
  • the PDU session modification command message includes the new VPLMN S-NSSAI and optionally the mapped HPLMN S-NSSAI and a cause value
  • the cause value may indicate that the S-NSSAI of the PDU session is replaced by the new S-NSSAI or indicate that a PDU session re-establishment on the new S-NSSAI is required.
  • the AMF provides a new VPLMN S-NSSAI and optionally the mapped HPLMN S-NSSAI to the RAN.
  • the AMF sends a PDU session modification command message including the new VPLMN S-NSSAI and optionally the mapped HPLMN S-NSSAI and a cause value to the UE.
  • the AMF receives a response message from the SMF, wherein:
  • the response message includes a PDU session release command message including the new VPLMN S-NSSAI and optionally the mapped HPLMN S-NSSAI and a cause value;
  • the cause value may indicate that a PDU session re-establishment on the new S-NSSAI is required.
  • the AMF sends a PDU session release command message including the new VPLMN S-NSSAI and optionally the mapped HPLMN S-NSSAI and a cause value to the UE.
  • FIG. 7 relates to a diagram of a wireless communication terminal 30 according to an embodiment of the present disclosure.
  • the wireless communication terminal 30 may be a tag, a mobile phone, a laptop, a tablet computer, an electronic book or a portable computer system and is not limited herein.
  • the wireless communication terminal 30 may be used to implement the UE described in this disclosure.
  • the wireless communication terminal 30 may include a processor 300 such as a microprocessor or Application Specific Integrated Circuit (ASIC) , a storage unit 310 and a communication unit 320.
  • the storage unit 310 may be any data storage device that stores a program code 312, which is accessed and executed by the processor 300.
  • Embodiments of the storage code 312 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 320 may a transceiver and is used to transmit and receive signals (e.g., messages or packets) according to processing results of the processor 300. In an embodiment, the communication unit 320 transmits and receives the signals via at least one antenna 322.
  • the storage unit 310 and the program code 312 may be omitted and the processor 300 may include a storage unit with stored program code.
  • the processor 300 may implement any one of the steps in exemplified embodiments on the wireless communication terminal 30, e.g., by executing the program code 312.
  • the communication unit 320 may be a transceiver.
  • the communication unit 320 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 communication node.
  • the wireless communication terminal 30 may be used to perform the operations of the UE described in this disclosure.
  • the processor 300 and the communication unit 320 collaboratively perform the operations described in this disclosure. For example, the processor 300 performs operations and transmit or receive signals, message, and/or information through the communication unit 320.
  • FIG. 8 relates to a diagram of a wireless communication node 40 according to an embodiment of the present disclosure.
  • the wireless communication node 40 may be a satellite, a base station (BS) , a gNB, a network entity, a Domain Name System (DNS) server, a Mobility Management Entity (MME) , Serving Gateway (S-GW) , Packet Data Network (PDN) Gateway (P-GW) , a radio access network (RAN) , a next generation RAN (NG-RAN) , a data network, a core network, a communication node in the core network, or a Radio Network Controller (RNC) , and is not limited herein.
  • BS base station
  • gNB a network entity
  • DNS Domain Name System
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • PDN Packet Data Network Gateway
  • RAN radio access network
  • NG-RAN next generation RAN
  • RNC Radio Network Controller
  • the wireless communication node 40 may include (perform) at least one network function such as an access and mobility management function (AMF) , an NSSF, a session management function (SMF) , a V-SMF, an H-SMF, a user place function (UPF) , a policy control function (PCF) , an application function (AF) , etc.
  • the wireless communication node 40 may be used to implement the node, the network, the network functions (e.g., the AMF, the NSSF, the SMF, the V-SMF, the H-SMF, etc. ) , or the network node described in this disclosure.
  • the wireless communication node 40 may include a processor 400 such as a microprocessor or ASIC, a storage unit 410 and a communication unit 420.
  • the storage unit 410 may be any data storage device that stores a program code 412, which is accessed and executed by the processor 400. Examples of the storage unit 412 include but are not limited to a SIM, ROM, flash memory, RAM, hard-disk, and optical data storage device.
  • the communication unit 420 may be a transceiver and is used to transmit and receive signals (e.g., messages or packets) according to processing results of the processor 400. In an example, the communication unit 420 transmits and receives the signals via at least one antenna 422.
  • the storage unit 410 and the program code 412 may be omitted.
  • the processor 400 may include a storage unit with stored program code.
  • the processor 400 may implement any steps described in exemplified embodiments on the wireless communication node 40, e.g., via executing the program code 412.
  • the communication unit 420 may be a transceiver.
  • the communication unit 420 may as an alternative or in addition be combining a transmitting unit and a receiving unit configured to transmit and to receive, respectively, signals, messages, or information to and from a wireless communication node or a wireless communication terminal.
  • the wireless communication node 40 may be used to perform the operations of the AMF, the NSSF, the SMF, the V-SMF, or the H-SMF described in this disclosure.
  • the processor 400 and the communication unit 420 collaboratively perform the operations described in this disclosure. For example, the processor 400 performs operations and transmit or receive signals through the communication unit 420.
  • a wireless communication method is also provided according to an embodiment of the present disclosure.
  • the wireless communication method may be performed by using a wireless communication node (e.g., an AMF) .
  • the wireless communication node may be implemented by using the wireless communication node 40 described in this disclosure, but is not limited thereto.
  • the wireless communication method includes receiving, by a first wireless communication node from a second wireless communication node, a slice mapping information update comprising one or more updated pairs of Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, and mapped Home Public Land Mobile Network, HPLMN, S-NSSAI.
  • the first wireless communication node used herein may indicate the AMF described above.
  • the second wireless communication node used herein may indicate the NSSF described above.
  • the wireless communication method may be performed by using a wireless communication node (e.g., an NSSF) .
  • the wireless communication node may be implemented by using the wireless communication node 40 described in this disclosure, but is not limited thereto.
  • the wireless communication method includes transmitting, by a second wireless communication node to a first wireless communication node, a slice mapping information update comprising one or more updated pairs of Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, and mapped Home Public Land Mobile Network, HPLMN, S-NSSAI.
  • the first wireless communication node used herein may indicate the AMF described above.
  • the second wireless communication node used herein may indicate the NSSF described above.
  • the wireless communication method may be performed by using a wireless communication terminal (e.g., a UE) .
  • the wireless communication terminal may be implemented by using the wireless communication terminal 30 described in this disclosure, but is not limited thereto.
  • the wireless communication method includes: receiving, by a wireless communication terminal from a first wireless communication node, at least one of updated configured Network Slice Selection Assistance Information, NSSAI, or updated allowed NSSAI, wherein the updated configured NSSAI comprises one or more updated pairs of configured Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI and Home Public Land Mobile Network, HPLMN, S-NSSAI mapped to the configured VPLMN S-NSSAI, and the updated allowed NSSAI comprises one or more updated pairs of allowed VPLMN S-NSSAI and HPLMN S-NSSAI mapped to the allowed VPLMN S-NSSAI.
  • the updated configured NSSAI comprises one or more updated pairs of configured Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI and Home Public Land Mobile Network, HPLMN, S-NSSAI mapped to the configured VPLMN S-NSSAI
  • the updated allowed NSSAI comprises one or more updated pairs of allowed
  • the first wireless communication node used herein may indicate the AMF described above.
  • the wireless communication terminal used herein may indicate the UE described above.
  • the wireless communication method may be performed by using a wireless communication node (e.g., an AMF) .
  • the wireless communication node may be implemented by using the wireless communication node 40 described in this disclosure, but is not limited thereto.
  • the wireless communication method includes transmitting, by a first wireless communication node to a second wireless communication node, updated Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, for a Protocol Data Unit, PDU, session.
  • VPLMN Visited Public Land Mobile Network
  • S-NSSAI Single Network Slice Selection Assistance Information
  • the first wireless communication node used herein may indicate the AMF described above.
  • the second wireless communication node used herein may indicate the SMF described above.
  • the wireless communication method may be performed by using a wireless communication node (e.g., an SMF) .
  • the wireless communication node may be implemented by using the wireless communication node 40 described in this disclosure, but is not limited thereto.
  • the wireless communication method includes receiving, by a second wireless communication node from a first wireless communication node, updated Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, for a Protocol Data Unit, PDU, session.
  • VPLMN Visited Public Land Mobile Network
  • S-NSSAI Single Network Slice Selection Assistance Information
  • the first wireless communication node used herein may indicate the AMF described above.
  • the second wireless communication node used herein may indicate the SMF described above.
  • a wireless communication method is also provided according to an embodiment of the present disclosure.
  • the wireless communication method may be performed by using a wireless communication terminal (e.g., a UE) .
  • the wireless communication terminal may be implemented by using the wireless communication terminal 30 described in this disclosure, but is not limited thereto.
  • the wireless communication method includes: receiving, by a wireless communication terminal from a first wireless communication node, updated Visited Public Land Mobile Network, VPLMN, Single Network Slice Selection Assistance Information, S-NSSAI, and a cause value indicating a PDU session change based on the updated VPLMN S-NSSAI.
  • the first wireless communication node used herein may indicate the AMF described above.
  • the wireless communication terminal used herein the present disclosure may indicate the UE described above.
  • a and/or B and/or C includes any and all combinations of one or more of A, B, and C, including A, B, C, A and B, A and C, B and C, and a combination of A and B and C.
  • A/B/C includes any and all combinations of one or more of A, B, and C, including A, B, C, A and B, A and C, B and C, and a combination of A and B and C.
  • 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)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Un procédé de communication sans fil est divulgué. Le procédé consiste à recevoir, par un premier nœud de communication sans fil en provenance d'un second nœud de communication sans fil, une mise à jour d'informations de mappage de tranche comprenant une ou plusieurs paires mises à jour de réseau mobile terrestre public visité, VPLMN, informations d'aide à la sélection de tranche de réseau unique, S-NSSAI, et réseau mobile terrestre public domestique, HPLMN, mappé, S-NSSAI.
PCT/CN2023/104253 2023-06-29 2023-06-29 Procédé, dispositif et produit programme informatique pour communication sans fil Pending WO2024109059A1 (fr)

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