Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2007-11-13
2007-11-13
Mehrpour, Naghmeh (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
Reexamination Certificate
active
11149095
ABSTRACT:
A handover method in a mobile communication system, wherein, while maintaining communication with a certain base station before handover, a mobile terminal measures signals of adjacent cells and confirms the candidate handover target base stations; the mobile terminal sends measurement report to network; inserting the procedure of pre-synchronization between the mobile terminal and the handover target base station, including: while sending measurement report to the network, the mobile terminal sends training sequence to the handover target base station; after receiving the training sequence, the handover target base station sends training sequence response message to the mobile terminal; the mobile terminal maintains open-loop or closed-loop synchronization with the handover target base station; the network sends handover command to the mobile terminal; the mobile terminal directly switches to the handover target base station according the handover command; wireless link between the mobile terminal and the handover-forward base station is released. By pre-acting wireless link synchronization establishment in handover before measuring stage, handover process time is reduced, system sources are saved, and handover reliability and quality are improved as well.
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Hu Jinling
Li Chenguang
Li Feng
Wang Darun
Yang Guiliang
Da Tang Mobile Communications Equipment Co., Ltd.
Marshall & Gerstein & Borun LLP
Mehrpour Naghmeh
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