US Patent No. 10,462,835

METHOD AND APPARATUS FOR PERFORMING LOCATION UPDATE FOR DUAL CONNECTIVITY IN WIRELESS COMMUNICATION SYSTEM


Patent No. 10,462,835
Issue Date October 29, 2019
Title Method And Apparatus For Performing Location Update For Dual Connectivity In Wireless Communication System
Inventorship Jian Xu, Seoul (KR)
Daewook Byun, Seoul (KR)
Assignee LG ELECTRONICS INC., Seoul (KR)

Claim of US Patent No. 10,462,835

1. A method for performing serving gateway (S-GW) relocation in a wireless communication system, the method performed by a mobility management entity (MME) and comprising:receiving location information of a serving small cell, which is served by a second evolved NodeB (eNB), from a first eNB which supports dual connectivity to a specific user equipment (UE) with the second eNB, wherein each of the first eNB and the second eNB is connected to a first S-GW;
transmitting the received location information of the serving small cell to a second S-GW, when the MME determines that the first S-GW of the second eNB should be changed to the second S-GW for an overload; and
performing the S-GW relocation based on the determination,
wherein after the S-GW relocation, the first S-GW is connected to the first eNB and the second S-GW is connected to the second eNB while a dual connectivity state between the first eNB and the second eNB is maintained.