US 11,696,170 B2
Method and apparatus for single network slice selection assistance information based congestion control in mobile communications
Chien-Chun Huang-Fu, Hsinchu (TW); Chi-Hsien Chen, Hsinchu (TW); Po-Kuang Lu, Hsinchu (TW); and Yu-Chieh Tien, Hsinchu (TW)
Assigned to MediaTek Inc.
Filed by MediaTek Inc., Hsinchu (TW)
Filed on Jul. 23, 2020, as Appl. No. 16/937,393.
Claims priority of provisional application 62/907,918, filed on Sep. 30, 2019.
Claims priority of provisional application 62/888,145, filed on Aug. 16, 2019.
Prior Publication US 2021/0051515 A1, Feb. 18, 2021
Int. Cl. H04W 28/00 (2009.01); H04W 28/02 (2009.01); H04W 36/14 (2009.01); H04W 84/04 (2009.01)
CPC H04W 28/0289 (2013.01) [H04W 36/14 (2013.01); H04W 84/042 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving, by a processor of an apparatus, a 5th generation session management (5GSM) message with a back-off timer from a network node of a wireless network;
starting, by the processor, the back-off timer;
associating, by the processor, the back-off timer with a mapped home public land mobile network (HPLMN) single-network slice selection assistance information (S-NSSAI) part of a valid S-NSSAI value provided by the apparatus to the wireless network; and
in an event that the apparatus is in a roaming scenario:
determining, by the processor, whether a mapped HPLMN S-NSSAI of a protocol data unit (PDU) session of the 5GSM message is same as the mapped HPLMN S-NSSAI part of the valid S-NSSAI value associated with the back-off timer; and
stopping, by the processor, the back-off timer responsive to a positive result from the determining; in an event that the apparatus is in a non-roaming scenario:
determining, by the processor, whether a mapped HPLMN S-NSSAI or serving PLMN S-NSSAI of the PDU session of the 5GSM message is same as the mapped HPLMN S-NSSAI part of the valid S-NSSAI value associated with the back-off timer; and
stopping, by the processor, the back-off timer responsive to a positive result from the determining.