US 9,813,978 B2
Method and apparatus for establishing session in wireless communication system
Heejeong Cho, Seoul (KR); Eunjong Lee, Seoul (KR); Hyeyoung Choi, Seoul (KR); and Genebeck Hahn, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Appl. No. 14/772,857
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Mar. 7, 2014, PCT No. PCT/KR2014/001887
§ 371(c)(1), (2) Date Sep. 4, 2015,
PCT Pub. No. WO2014/137184, PCT Pub. Date Sep. 12, 2014.
Claims priority of provisional application 61/774,584, filed on Mar. 8, 2013.
Claims priority of provisional application 61/821,731, filed on May 10, 2013.
Prior Publication US 2016/0014686 A1, Jan. 14, 2016
Int. Cl. H04W 28/02 (2009.01); H04W 48/18 (2009.01); H04W 76/02 (2009.01); H04W 88/06 (2009.01); H04W 36/14 (2009.01); H04W 36/22 (2009.01); H04W 28/08 (2009.01)
CPC H04W 48/18 (2013.01) [H04W 28/0231 (2013.01); H04W 28/0268 (2013.01); H04W 28/08 (2013.01); H04W 36/14 (2013.01); H04W 36/22 (2013.01); H04W 76/022 (2013.01); H04W 76/023 (2013.01); H04W 76/026 (2013.01); H04W 88/06 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for establishing, by an entity of a primary radio access technology (RAT) system, a session in a wireless communication system, the method comprising:
determining a routing type, which is one of user plane (U-plane) aggregation, U-plane segregation and U-plane switch, and a routing rule according to the routing type, based on quality of service (QoS) for a bearer and measurement results on the primary RAT system and a secondary RAT system;
when the routing type is the U-plane switch, releasing radio bearers mapped to all evolved packet system (EPS) bearers related to U-plane; and
after all uplink (UL) data is transmitted to a packet data network (PDN) gateway (P-GW), releasing E-UTRAN radio access bearers (E-RABs) mapped to a corresponding EPS bearer.