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    • 41. 发明申请
    • TDD system based cell handoff method and user equipment
    • 基于TDD系统的小区切换方法和用户设备
    • US20090122730A1
    • 2009-05-14
    • US11916502
    • 2006-04-20
    • Guiliang YangYuanxin QiaoFeng LiNa Wu
    • Guiliang YangYuanxin QiaoFeng LiNa Wu
    • H04J3/00
    • H04W36/30Y02D70/00
    • The present invention discloses a cell handoff method and a user equipment based on a TDD system. The method includes: step A. a UE measures received pilot channels of a source cell and a neighboring cell according to a measurement control message and reports measurement result to a RNC; step B. the RNC, determines whether a target cell to be subject to a cell handoff process has available resources at a time slot different from that of the source cell and if yes, transmits a cell handoff command to the UE, allocates available resources for the UE in the target cell and transmits traffic carrier data of the UE to the source cell and the target cell respectively; and step C. after receiving the cell handoff command, the UE communicates with the source cell and the target cell at a same frame and at same time according to the allocated available resources. According to the handoff method of the present invention, UE can more reliably receive the handoff control command transmitted by the RNC and during the handoff process, the transmission power and interference are reduced so that the reliable handoff of a UE is guaranteed and the system performance is improved.
    • 本发明公开了一种基于TDD系统的小区切换方法和用户设备。 该方法包括:步骤A,UE根据测量控制消息测量源小区和相邻小区的接收导频信道,并将测量结果报告给RNC; 步骤B. RNC确定要进行小区切换过程的目标小区是否具有与源小区不同的时隙的可用资源,如果是,则向UE发送小区切换命令,为 目标小区中的UE,并且将UE的业务载波数据分别发送到源小区和目标小区; 和步骤C.在接收到小区切换命令之后,UE根据所分配的可用资源,在相同的帧并且同时与源小区和目的小区进行通信。 根据本发明的切换方法,UE可以更可靠地接收由RNC发送的切换控制命令,并且在切换过程期间,降低发射功率和干扰,从而保证UE的可靠切换,并且系统性能 改进了