US 12,069,568 B2
Method and device for terminal attaching and creating home-routed PDU session in roaming environment supporting network slice
Youngkyo Baek, Seoul (KR); Sunghoon Kim, Seoul (KR); Jungje Son, Yongin-si (KR); and Hoyeon Lee, Seongnam-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jul. 8, 2022, as Appl. No. 17/860,778.
Application 17/860,778 is a continuation of application No. 16/338,554, granted, now 11,388,656, previously published as PCT/KR2017/011133, filed on Oct. 10, 2017.
Claims priority of application No. 10-2016-0129252 (KR), filed on Oct. 6, 2016.
Prior Publication US 2022/0353797 A1, Nov. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 48/16 (2009.01); H04W 48/18 (2009.01); H04W 84/04 (2009.01)
CPC H04W 48/16 (2013.01) [H04W 48/18 (2013.01); H04W 84/042 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method performed by a first network repository function (NRF) entity in a serving public land mobile network (PLMN), the method comprising:
receiving, from a requesting network function (NF) entity in the serving PLMN, a first NF discovery request message comprising an identifier of a home PLMN, network slice assistance information, and a data network name;
transmitting, to a second NRF entity in the home PLMN, a second NF discovery request message comprising the network slice assistance information and the data network name, based on the identifier of the home PLMN;
as a response to the second NF discovery request message, receiving, from the second NRF entity, a first NF discovery response message comprising an address of a target NF in the home PLMN; and
transmitting, to the requesting NF entity, a second NF discovery response message comprising the address of the target NF.