US 11,658,913 B2
Method and apparatus for redundant transmission for ultra-reliable services in 5G wireless network system
Kisuk Kweon, Suwon-si (KR); Jicheol Lee, Suwon-si (KR); Jungshin Park, Suwon-si (KR); Sangjun Moon, Suwon-si (KR); and Beomsik Bae, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on May 21, 2019, as Appl. No. 16/418,835.
Claims priority of application No. 10-2018-0057796 (KR), filed on May 21, 2018.
Prior Publication US 2019/0356601 A1, Nov. 21, 2019
Int. Cl. H04L 65/1069 (2022.01); H04L 65/1104 (2022.01); H04L 45/24 (2022.01); H04L 47/32 (2022.01); H04L 1/1812 (2023.01); H04L 1/1607 (2023.01); H04L 1/08 (2006.01); H04L 5/00 (2006.01); H04W 76/12 (2018.01)
CPC H04L 47/32 (2013.01) [H04L 1/08 (2013.01); H04L 1/1628 (2013.01); H04L 1/1642 (2013.01); H04L 1/1816 (2013.01); H04L 5/0017 (2013.01); H04L 65/1069 (2013.01); H04L 65/1104 (2022.05); H04W 76/12 (2018.02)] 18 Claims
OG exemplary drawing
 
1. A method performed by a session management function (SMF) in a communication system, the method comprising:
receiving a request message for establishing a protocol data unit (PDU) session;
deciding to perform a redundant transmission associated with the PDU session between a user plane function (UPF) and a single radio access network (RAN) node;
transmitting, to the UPF, a session establishment request message;
receiving, from the UPF, a session establishment response message;
transmitting, to the RAN, at least two core network (CN) tunnel information for establishing at least two CN tunnels between the single RAN node and the UPF for the redundant transmission;
receiving, from the single RAN node, at least two access network (AN) tunnel information for the redundant transmission; and
transmitting, to the UPF, the at least two AN tunnel information,
wherein the session establishment request message includes the at least two CN tunnel information in case that the at least two CN tunnel information are allocated by the SMF, and
wherein the session establishment response message includes the at least two CN tunnel information in case that the at least two CN tunnel information are allocated by the UPF.