US 12,302,238 B2
Network slice-available area information acquisition method
Hoyeon Lee, Seoul (KR); Sunghoon Kim, Seoul (KR); Youngkyo Baek, Seoul (KR); Jungje Son, Yongin-si (KR); and Seungri Jin, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Oct. 16, 2023, as Appl. No. 18/487,886.
Application 18/487,886 is a continuation of application No. 17/660,580, filed on Apr. 25, 2022, granted, now 11,792,730.
Application 17/660,580 is a continuation of application No. 16/820,494, filed on Mar. 16, 2020, granted, now 11,317,344, issued on Apr. 26, 2022.
Application 16/820,494 is a continuation of application No. 15/965,314, filed on Apr. 27, 2018, granted, now 10,595,268, issued on Mar. 17, 2020.
Claims priority of application No. 10-2017-0054642 (KR), filed on Apr. 27, 2017; and application No. 10-2017-0094177 (KR), filed on Jul. 25, 2017.
Prior Publication US 2024/0049125 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 48/18 (2009.01); H04W 4/70 (2018.01); H04W 8/02 (2009.01); H04W 16/02 (2009.01); H04W 68/02 (2009.01); H04W 76/28 (2018.01); H04W 4/02 (2018.01); H04W 8/06 (2009.01); H04W 60/04 (2009.01)
CPC H04W 48/18 (2013.01) [H04W 4/70 (2018.02); H04W 8/02 (2013.01); H04W 16/02 (2013.01); H04W 68/02 (2013.01); H04W 76/28 (2018.02); H04W 4/02 (2013.01); H04W 8/065 (2013.01); H04W 60/04 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method performed by an access and mobility management function (AMF) in a wireless communication system, the method comprising:
receiving, from a terminal, a first message including requested network slice selection assistance information (NSSAI);
transmitting, to a network slice selection function (NSSF), a second message including the requested NSSAI and information on a tracking area of the terminal based on the first message;
receiving, from the NSSF, a third message as a response to the second message, the third message including allowed NSSAI for the terminal and information for at least one AMF to be used to serve the terminal;
identifying that rerouting to a target AMF is unnecessary based on the third message; and
based on identifying that the rerouting to the target AMF is unnecessary:
determining a registration area for the terminal based on the allowed NSSAI, wherein the allowed NSSAI is available in the registration area; and
transmitting, to the terminal, a fourth message including the allowed NSSAI and the registration area for the terminal.