A HAND-OVER METHOD IN MOBILE COMMUNICATION SYSTEM

摘要

The present invention relates to handover method in mobile communication system, comprising: 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 target base station, comprising: while sending measurement report to the network, the mobile terminal also sends training sequence to the target base station; after receiving the training sequence, the target base station sends training sequence response message to the mobile terminal; the mobile terminal maintains open-loop or closed-loop synchronization with the target base station; the network sends handover command to the mobile terminal; the mobile terminal directly switches to the 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. <IMAGE>