US 11,895,539 B2
Session management method based on reallocation of PDU session anchor device, and device performing the session management method
Soohwan Lee, Daejeon (KR); Dongmyoung Kim, Sejong-si (KR); and Myung Ki Shin, Daejeon (KR)
Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed on Nov. 29, 2021, as Appl. No. 17/536,609.
Application 17/536,609 is a continuation of application No. 16/796,487, filed on Feb. 20, 2020, granted, now 11,190,988.
Application 16/796,487 is a continuation of application No. 15/927,582, filed on Mar. 21, 2018, granted, now 10,575,220.
Claims priority of application No. 10-2017-0035604 (KR), filed on Mar. 21, 2017; application No. 10-2017-0103670 (KR), filed on Aug. 16, 2017; and application No. 10-2017-0167798 (KR), filed on Dec. 7, 2017.
Prior Publication US 2022/0086703 A1, Mar. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 36/00 (2009.01); H04W 36/12 (2009.01); H04L 67/14 (2022.01); H04W 80/04 (2009.01); H04W 8/28 (2009.01); H04L 61/5007 (2022.01); H04L 101/677 (2022.01)
CPC H04W 36/0022 (2013.01) [H04L 67/14 (2013.01); H04W 36/0011 (2013.01); H04W 36/12 (2013.01); H04L 61/5007 (2022.05); H04L 2101/677 (2022.05); H04W 8/28 (2013.01); H04W 80/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method to be performed by a session management function (SMF) device in a network, the method comprising:
determining, by the SMF device, PDU (Protocol Data Unit) session anchor relocation;
transmitting session establishment request to a new PSA device and providing a tunnel ID of UL(Uplink) CL(Classifier);
transmitting a session modification request to the UL CL to update an UL traffic filter according to an UL CL rules regarding a traffic flow;
receiving a session modification response, when the UL CL successfully updates all the UL traffic filters that the SMF device requests to modify; and
transmitting a session release request with a session ID to an existing PSA(PDU Session Anchor) device,
wherein the traffic flow is related to movement from the existing PSA device to the new PSA device.