Invention Grant
- Patent Title: Method and apparatus for performing inter-MeNB handover without SeNB change in wireless communication system
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Application No.: US15314757Application Date: 2015-12-29
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Publication No.: US10278103B2Publication Date: 2019-04-30
- Inventor: Jian Xu , Daewook Byun
- Applicant: LG ELECTRONICS INC.
- Applicant Address: KR Seoul
- Assignee: LG ELECTRONICS INC.
- Current Assignee: LG ELECTRONICS INC.
- Current Assignee Address: KR Seoul
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- International Application: PCT/KR2015/014386 WO 20151229
- International Announcement: WO2016/108566 WO 20160707
- Main IPC: H04W36/00
- IPC: H04W36/00 ; H04W36/18 ; H04W36/08 ; H04W92/20 ; H04W76/19 ; H04W36/30 ; H04W76/15 ; H04W88/06 ; H04W88/08

Abstract:
A method and apparatus for performing an inter-master eNodeB (MeNB) handover procedure without secondary eNB (SeNB) change in a wireless communication system is provided. A target MeNB decides to keep bearers of a SeNB, and transmits a handover request acknowledge message including a first indication of keeping the bearers of the SeNB to a source MeNB. The first indication may indicate that a user equipment (UE) context in the SeNB is kept. Upon receiving the handover request acknowledge message including the first indication, the source MeNB transmits a SeNB release request message including a second indication of keeping the bearers of the SeNB to the SeNB. The second indication may indicate that a UE context in the SeNB is kept.
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