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    • 7. 发明授权
    • Methods and system for performing handover in a wireless communication system
    • 用于在无线通信系统中执行切换的方法和系统
    • US08131295B2
    • 2012-03-06
    • US11765013
    • 2007-06-19
    • Jin WangArty ChandraStephen E. Terry
    • Jin WangArty ChandraStephen E. Terry
    • H04W36/00H04W4/00
    • H04W36/0061H04W36/00H04W36/0055H04W36/0072H04W36/0083H04W56/001H04W92/20
    • A method and system for performing handover in a third generation (3G) long term evolution (LTE) system are disclosed. A source evolved Node-B (eNode-B) makes a handover decision based on measurements and sends a handover request to a target eNode-B. The target eNode-B sends a handover response to the source eNode-B indicating that a handover should commence. The source eNode-B then sends a handover command to a wireless transmit/receive unit (WTRU). The handover command includes at least one of reconfiguration information, information regarding timing adjustment, relative timing difference between the source eNode-B and the target eNode-B, information regarding an initial scheduling procedure at the target eNode-B, and measurement information for the target eNode-B. The WTRU then accesses the target eNode-B and exchanges layer 1/2 signaling to perform downlink synchronization, timing adjustment, and uplink and downlink resource assignment based on information included in the handover command.
    • 公开了一种在第三代(3G)长期演进(LTE)系统中进行切换的方法和系统。 源演进节点B(eNode-B)基于测量进行切换决定,并向目标eNode-B发送切换请求。 目标eNode-B向源eNode-B发送指示切换应该开始的切换响应。 源eNode-B然后向无线发射/接收单元(WTRU)发送切换命令。 切换命令包括重新配置信息,关于定时调整的信息,源eNode-B和目标eNode-B之间的相对定时差异,关于目标eNode-B的初始调度过程的信息,以及关于 目标eNode-B。 然后,WTRU基于包括在切换命令中的信息来访问目标eNode-B并交换层1/2信令以执行下行链路同步,定时调整以及上行链路和下行链路资源分配。