Service area restriction enforcement in wireless network

Patent metadata

Field	Value
Publication number	US-2025261149-A1
Application number	US-202318862116-A
Country	US
Kind code	A1
Filing date	May 4, 2023
Priority date	May 4, 2022
Publication date	Aug 14, 2025
Grant date	—

Abstract

The disclosure relates to a 5th generation (5G) or 6th generation (6G) communication system for supporting a higher data transmission rate. According to an embodiment, a method performed by an access and mobility management function (AMF) entity in a mobile communication system is provided. The method comprises receiving, from a user equipment (UE), a registration request message, identifying at least one local area data network (LADN) service area per data network name (DNN) and single-network slice selection assistance information (S-NSSAI) based on information for identifying the at least one LADN service area and transmitting, to the UE, a registration accept message as a response to the registration request message, the registration accept message including DNN information and tracking area (TA) list information which correspond to the at least one LADN service area per DNN and S-NSSAI.

First claim

1 . A method performed by an access and mobility management function (AMF) entity in a mobile communication system, the method comprising:
receiving, from a user equipment (UE), a registration request message; identifying at least one local area data network (LADN) service area per data network name (DNN) and single-network slice selection assistance information (S-NSSAI) based on information for identifying the at least one LADN service area; and transmitting, to the UE, a registration accept message as a response to the registration request message, the registration accept message including DNN information and tracking area (TA) list information which correspond to the at least one LADN service area per DNN and S-NSSAI.

2 . The method of claim 1 , wherein the information is obtained from a local configuration or is received from a unified data management (UDM) entity.

3 . The method of claim 1 , wherein the TA list information is mapped with geographical information.

4 . The method of claim 1 , further comprising:
receiving, from the UE, a protocol data unit (PDU) session request message in case that the UE is in the at least one LADN service area; and transmitting, to the UE, accept message as a response to the PDU session request message.

5 . An access and mobility management function (AMF) entity in a mobile communication system, the AMF entity comprising:
a transceiver; and a controller coupled with the transceiver and configured to: receive, from a user equipment (UE), a registration request message; identify at least one local area data network (LADN) service area per data network name (DNN) and single-network slice selection assistance information (S-NSSAI) based on information for identifying the at least one LADN service area; and transmit, to the UE, a registration accept message as a response to the registration request message, the registration accept message including DNN information and tracking area (TA) list information which correspond to the at least one LADN service area per DNN and S-NSSAI.

6 . The AMF entity of claim 5 , wherein the information is obtained from a local configuration or is received from a unified data management (UDM) entity.

7 . The AMF entity of claim 5 , wherein the TA list information is mapped with geographical information.

8 . The AMF entity of claim 5 , wherein the controller is further configured to:
receive, from the UE, a protocol data unit (PDU) session request message in case that the UE is in the at least one LADN service area; and transmit, to the UE, accept message as a response to the PDU session request message.

9 . A method performed by a user equipment (UE) in a mobile communication system, the method comprising:
transmitting, to an access and mobility management function (AMF) entity, a registration request message; and receiving, from the AMF entity, the registration accept message as a response to the registration request message, the registration accept message including data network name (DNN) information and tracking area (TA) list information which correspond to at least one local area data network (LADN) service area per DNN and single-network slice selection assistance information (S-NSSAI), wherein the at least one LADN service area is based on information associated with the at least one LADN service area.

10 . The method of claim 9 , wherein the information associated with the at least one LADN service area is associated with a local configuration or at least one subscribed LADN service area of a unified data management (UDM) entity.

11 . The method of claim 9 , wherein the TA list information is mapped with geographical information.

12 . The method of claim 9 , further comprising:
transmitting, to the AMF entity, a protocol data unit (PDU) session request message in case that the UE is in the at least one LADN service area; and receiving, from the AMF entity, accept message as a response to the PDU session request message.

13 . A user equipment (UE) in a mobile communication system, the UE comprising:
a transceiver; and a controller coupled with the transceiver and configured to: transmit, to an access and mobility management function (AMF) entity, a registration request message; and receive, from the AMF entity, the registration accept message as a response to the registration request message, the registration accept message including data network name (DNN) information and tracking area (TA) list information which correspond to at least one local area data network (LADN) service area per DNN and single-network slice selection assistance information (S-NSSAI), wherein the at least one LADN service area is based on information associated with the at least one LADN service area.

14 . The UE of claim 13 , wherein the TA list information is mapped with geographical information.

15 . The UE of claim 13 , wherein the controller is further configured to:
transmit, to the AMF entity, a protocol data unit (PDU) session request message in case that the UE is in the at least one LADN service area; and receive, from the AMF entity, accept message as a response to the PDU session request message.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Nayak Ashok Kumar
• Gupta Varini
• Moon Sangjun

Classifications

• H04W48/16

  Discovering, processing access restriction or access information · CPC title

• H04W8/18

  Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data · CPC title

• H04W60/00 Primary

  Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration · CPC title