US Patent No. 9,860,869

METHOD AND APPARATUS FOR OFFLOADING DATA TRAFFIC IN A WIRELESS COMMUNICATION SYSTEM


Patent No. 9,860,869
Issue Date January 02, 2018
Title Method And Apparatus For Offloading Data Traffic In A Wireless Communication System
Inventorship Min Kim, Seoul (KR)
Yong-Hwan Kim, Chungcheongnam-do (KR)
Youn-Hee Han, Chungcheongnam-do (KR)
Sang-Jun Moon, Gyeonggi-do (KR)
Yong-Seok Park, Seoul (KR)
Jin-Ho Lee, Seoul (KR)
Dae-Kyu Choi, Gyeonggi-do (KR)
Assignee SAMSUNG ELECTRONICS CO., LTD., Suwon-si, Gyeonggi-Do (KR)

Claim of US Patent No. 9,860,869

1. A method for offloading data traffic by a mobility management entity (MME) in a wireless communication system, the method
comprising:
receiving a connection request message requesting connection between a user equipment (UE) and a packet data network (PDN)
from the UE;

determining a PDN for providing a service requested by the UE;
selecting a PDN gateway based on a closeness between a location of the PDN gateway and a location of a base station (BS) that
manages the UE;

sending a permit message permitting a request for connection with the determined PDN to the UE through the BS;
setting an evolved packet service (EPS) bearer for transmission and reception of data traffic related to the service between
the UE and the PDN gateway;

receiving a PDN connection termination request message sent from the PDN gateway if data traffic has not been transmitted
or received through the EPS bearer for a preset time or more; and

deleting a context related to the EPS bearer; and
sending a session termination request message requesting deletion of the context related to the EPS bearer to the UE.