US 11,812,490 B2
Method for performing communication related to packet switch (PS) data off
Sangmin Park, Seoul (KR); Hyunsook Kim, Seoul (KR); Laeyoung Kim, Seoul (KR); Jaehyun Kim, Seoul (KR); and Myungjune Youn, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Feb. 21, 2020, as Appl. No. 16/797,711.
Claims priority of application No. 10-2019-0021390 (KR), filed on Feb. 22, 2019.
Prior Publication US 2020/0275513 A1, Aug. 27, 2020
Int. Cl. H04W 76/20 (2018.01); H04W 48/04 (2009.01)
CPC H04W 76/20 (2018.02) [H04W 48/04 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method performed by a terminal operating in a wireless communication system, the method comprising:
transmitting a registration request message to an Access and Mobility Management Function (AMF);
receiving a registration accept message from the AMF;
when the terminal is located in a non-allowed area, setting a service type information to 4 bits-length service type value indicating “0110” for informing a change in a Packet Switch (PS) data off status of the terminal, based on that the terminal has a pending uplink signaling to inform the change in the PS data off status of the terminal;
when the terminal is located in the non-allowed area, transmitting a service request message to the AMF, based on that the terminal has the pending uplink signaling to inform the change in the PS data off status of the terminal,
wherein the change in the PS data off status is related to PS data off being activated or deactivated by the terminal,
wherein traffic between the AMF and the terminal is prevented, based on the PS data off being activated, and
wherein the non-allowed area is an area in which the terminal is not allowed to transmit the service request message except for cases, which include a case for informing the PS data off status; and
receiving, from the AMF, a response message to the service request message,
wherein the AMF is configured to transmit a reject message as the response message to the service request message, except for the cases, which include the case for informing the PS data off status, when the terminal is located in the non-allowed area, and
based on that an Information Element (IE) for informing the change of the PS data off status is included in the service request message, a service accept message is received as the response message, which is transmitted by the AMF, when the terminal is located in the non-allowed area.