US 12,082,284 B2
Method for registering terminal in wireless communication system and apparatus therefor
Sangmin Park, Seoul (KR); Jinsook Ryu, Seoul (KR); Hyunsook Kim, Seoul (KR); and Myungjune Youn, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Nov. 15, 2021, as Appl. No. 17/526,312.
Application 17/526,312 is a continuation of application No. 16/623,603, granted, now 11,202,330, previously published as PCT/KR2018/006845, filed on Jun. 18, 2018.
Claims priority of provisional application 62/521,384, filed on Jun. 17, 2017.
Prior Publication US 2022/0078870 A1, Mar. 10, 2022
Int. Cl. H04W 76/18 (2018.01); H04W 4/16 (2009.01); H04W 4/70 (2018.01); H04W 8/02 (2009.01); H04W 8/08 (2009.01); H04W 8/12 (2009.01); H04W 8/22 (2009.01); H04W 12/06 (2021.01); H04W 48/02 (2009.01); H04W 48/18 (2009.01); H04W 60/00 (2009.01); H04W 60/06 (2009.01); H04W 76/27 (2018.01); H04W 80/08 (2009.01); H04W 84/04 (2009.01)
CPC H04W 76/18 (2018.02) [H04W 4/16 (2013.01); H04W 8/02 (2013.01); H04W 8/08 (2013.01); H04W 8/12 (2013.01); H04W 12/06 (2013.01); H04W 48/02 (2013.01); H04W 48/18 (2013.01); H04W 60/00 (2013.01); H04W 60/06 (2013.01); H04W 76/27 (2018.02); H04W 4/70 (2018.02); H04W 8/22 (2013.01); H04W 80/08 (2013.01); H04W 84/042 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE) operating in a wireless communication system, the method comprising:
transmitting a registration request message to an access and mobility management function (AMF),
wherein the registration request message includes requested network slice selection assistance information (NSSAI) including at least one single NSSAI (S-NSSAI) corresponding to a network slice with which the UE requests to register; and
receiving, from the AMF, a registration accept message in response to the registration request message,
wherein the registration accept message includes (i) information on an allowed S-NSSAI and (ii) information on a rejected S-NSSAI associated with a rejection cause,
wherein the allowed S-NSSAI is an S-NSSAI among the at least one S-NSSAI in the requested NSSAI allowed by the AMF,
wherein the rejected S-NSSAI is an S-NSSAI among the at least one S-NSSAI in the requested NSSAI rejected by the AMF, and
wherein the rejection cause is at least one of (i) the rejected S-NSSAI not being available in a current public land mobile network (PLMN) or (ii) the rejected S-NSSAI not being available in a current registration area;
wherein the method further comprises,
(1) based on the rejection cause being that the rejected S-NSSAI is not available in the current PLMN:
storing the rejected S-NSSAI in a rejected NSSAI for the current PLMN;
skipping attempting to use the stored rejected S-NSSAI; and
removing the stored rejected S-NSSAI from an allowed NSSAI for the current PLMN; and
(2) based on the rejection cause being that the rejected S-NSSAI is not available in the current registration area:
storing the rejected S-NSSAI in a rejected NSSAI for the current registration area;
skipping attempting to use the stored rejected S-NSSAI until the UE moving out the current registration area; and
removing the stored rejected S-NSSAI from the allowed NSSAI for the current registration area.