Network slice-available area information acquisition method

Patent metadata

Field	Value
Publication number	US-2018317163-A1
Application number	US-201815965314-A
Country	US
Kind code	A1
Filing date	Apr 27, 2018
Priority date	Apr 27, 2017
Publication date	Nov 1, 2018
Grant date	—

Abstract

The present disclosure relates to a communication scheme and system for converging a 5 th generation (5G) communication system for supporting a data rate higher than that of a 4 th generation (4G) system with an internet of things (IoT) technology. The present disclosure is applicable to intelligent services (e.g., smart homes, smart buildings, smart cities, smart cars, connected cars, health care, digital education, retails, and security and safety-related services) based on the 5G communication technology and the IoT-related technology. The present disclosure discloses operation methods of a terminal and a network for facilitating a 5G terminal registration procedure in a wireless communication system.

First claim

What is claimed is:

1 . A method by an access and mobility management function (AMF) in a wireless communication system, the method comprising:
transmitting a first message including at least one network slice selection assistance information (NSSAI) requested by a terminal to a network slice function (NSSF); and receiving, in response to the first message, a second message including allowed NSSAI for the terminal and information on an area capable of being served by at least one network slice corresponding to the allowed NSSAI from the NSSF.

2 . The method of claim 1 , further comprising allocating a registration area for the terminal based on the information on the area.

3 . The method of claim 1 , wherein:
the allowed NSSAI is determined based on a current location of the terminal, and the information on the area is determined based on at least one of specific tracking area (TA) information or public land mobile network (PLMN) information of the terminal.

4 . The method of claim 1 , further comprising:
saving the allowed NSSAI and the information on the area; and updating, if a predetermined condition is satisfied, the information on the area corresponding to the allowed NSSAI.

5 . The method of claim 4 , wherein the predetermined condition comprises receiving a third message notifying that the area capable of being served by the at least one network slice is changed from the NSSF.

6 . A method by a network slice selection function (NSSF) in a wireless communication system, the method comprising:
receiving a first message including at least one network slice selection assistance information (NSSAI) requested by a terminal from an access and mobility management function (AMF); determining allowed NSSAI for the terminal and information on an area capable of being served by at least one network slice corresponding to the allowed NSSAI; and transmitting a second message including the allowed NSSAI and the information on the area to the AMF.

7 . The method of claim 6 , wherein the information on the area is used by the AMF to allocate a registration area for the terminal.

8 . The method of claim 6 , wherein:
the allowed NSSAI is determined based on a current location of the terminal, and the information on the area is determined based on at least one of specific tracking area (TA) information or public land mobile network (PLMN) information of the terminal.

9 . The method of claim 6 , further comprising:
determining whether the area capable of being served by the at least one network slice is changed; and transmitting, if the area is changed, a third message notifying that the area is changed to the AMF.

10 . The method of claim 9 , wherein:
the allowed NSSAI and the area information are saved in the AMF, and the area information saved in the AMF is updated based on the third message.

11 . An access and mobility management function (AMF) entity in a wireless communication system, comprising:
a transceiver; and a controller configured to control the transceiver to:
transmit a first message including at least one network slice selection assistance information (NSSAI) requested by a terminal to a network slice function (NSSF), and
receive, in response to the first message, a second message including allowed NSSAI for the terminal and information on an area capable of being served by at least one network slice corresponding to the allowed NSSAI from the NSSF.

12 . The entity of claim 11 , wherein the controller is further configured to allocate a registration area for the terminal based on the information on the area.

13 . The entity of claim 11 , wherein:
the allowed NSSAI is determined based on a current location of the terminal, and the information on the area is determined based on at least one of specific tracking area (TA) information or public land mobile network (PLMN) information of the terminal.

14 . The entity of claim 11 , further comprising a memory configured to save the allowed NSSAI and the information on the area,
wherein the controller is configured to update, if a predetermined condition is satisfied, the information on the area corresponding to the allowed NSSAI in the memory.

15 . The entity of claim 14 , wherein the predetermined condition comprises receiving a third message notifying that the area capable of being served by the at least one network slice is changed from the NSSF.

16 . A network slice selection function (NSSF) entity in a wireless communication system, comprising:
a transceiver; and a controller configured to:
control the transceiver to receive a first message including at least one network slice selection assistance information (NSSAI) requested by a terminal from an access and mobility management function (AMF),
determine allowed NSSAI for the terminal and information on an area capable of being served by at least one network slice corresponding to the allowed NSSAI, and
control the transceiver to transmit a second message including the allowed NSSAI and the information on the area to the AMF.

17 . The entity of claim 16 , wherein the information on the area is used by the AMF to allocate a registration area for the terminal.

18 . The entity of claim 16 , wherein the controller is configured to:
determine the allowed NSSAI based on a current location of the terminal, and determine the information on the area based on at least one of specific tracking area (TA) information or public land mobile network (PLMN) information of the terminal.

19 . The entity of claim 16 , wherein the controller is configured to:
determine whether the area capable of being served by the at least one network slice is changed, and control the transceiver to transmit, if the area is changed, a third message notifying that the area is changed to the AMF.

20 . The entity of claim 19 , wherein:
the allowed NSSAI and the information on the area are saved in the AMF, and the information on the area saved in the AMF is updated based on the third message.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Hoyeon
• Kim Sunghoon
• Baek Youngkyo
• Son Jungje
• Jin Seungri

Classifications

• H04W60/04

  using triggered events · CPC title

• H04W4/70 Primary

  Services for machine-to-machine communication [M2M] or machine type communication [MTC] · CPC title

• H04W48/18 Primary

  Selecting a network or a communication service · CPC title

• H04W68/02

  Arrangements for increasing efficiency of notification or paging channel · CPC title

• H04W4/02

  Services making use of location information · CPC title