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    • 6. 发明授权
    • Method and apparatus for handover in wireless communication system
    • 无线通信系统中切换的方法和装置
    • US08660092B2
    • 2014-02-25
    • US13020880
    • 2011-02-04
    • Young-Hyun JeonChan-Ho MinJu-Mi LeeYung-Soo KimJong-Hyung Kwun
    • Young-Hyun JeonChan-Ho MinJu-Mi LeeYung-Soo KimJong-Hyung Kwun
    • H04W4/00H04W36/00
    • H04W36/0083H04W36/08H04W48/16H04W48/20
    • A method and an apparatus ensure efficient handover in a wireless communication system even when a User Equipment (UE) moves at a high speed. A serving eNB receives interference power information of an uplink (UL) signal and interference increase/decrease information of the UL signal from at least one adjacent eNB. an adjacent eNB, for which the received interference power information indicates that interference power of the UL signal is equal to or greater than a threshold value, is selected as a target eNB for a User Equipment (UE) among the at least one adjacent eNB. Whether handover of the UE is delayed is determined based on the interference increase/decrease information received from the target eNB. And if the handover of the UE is delayed, a handover parameter is transmitted to the UE to perform handover to the target eNB.
    • 即使当用户设备(UE)以高速移动时,方法和设备也确保无线通信系统中的有效切换。 服务eNB从至少一个相邻eNB接收上行链路(UL)信号的干扰功率信息和UL信号的干扰增减信息。 在所述至少一个相邻eNB中,选择所述接收到的干扰功率信息指示所述UL信号的干扰功率等于或大于阈值的相邻eNB作为用户设备(UE)的目标eNB。 基于从目标eNB接收的干扰增加/减少信息确定UE的切换是否被延迟。 如果UE的切换被延迟,则向UE发送切换参数以执行到目标eNB的切换。
    • 7. 发明授权
    • Apparatus and method for handover in broadband wireless communication system for supporting mobile relay station
    • 宽带无线通信系统用于支持移动中继站的切换装置及方法
    • US08660087B2
    • 2014-02-25
    • US13057099
    • 2009-07-28
    • Young-Hyun JeonJong-Hyung KwunYung-Soo KimChan-Ho Min
    • Young-Hyun JeonJong-Hyung KwunYung-Soo KimChan-Ho Min
    • H04Q7/00H04Q7/20
    • H04W36/0077H04W12/06H04W28/06H04W72/0413H04W72/042H04W88/04
    • An apparatus and a method for handover in a broadband wireless communication system supporting a Mobile Relay Station (MRS) are provided. The method includes transmitting a Connection ID (CID) of Mobile Stations (MSs), the CIDs pre-allocated by a target BS, to the MSs; sending a resource allocation message comprising uplink resource allocation information for bandwidth request of the MSs, to the MSs; receiving a bandwidth request message which comprises security authentication information of each MS, from the MSs using an uplink resource allocated through the uplink resource allocation information; and aggregating bandwidth request messages of the MSs and sending a ranging request message comprising the security authentication information and bandwidth request information of the MSs to the target BS. Thus, the handover delay time, which is inevitable for the bandwidth request in the conventional connection set-up procedure, can be reduced, and the handover with the reliability guaranteed can be achieved by allowing the security related processing in the network re-entry procedure.
    • 提供了一种在支持移动中继站(MRS)的宽带无线通信系统中切换的装置和方法。 该方法包括将移动站(MS)的连接ID(CID)(由目标BS预先分配的CID)发送给MS; 向MS发送包括用于MS的带宽请求的上行链路资源分配信息的资源分配消息; 从使用通过上行链路资源分配信息分配的上行链路资源的MS接收包括每个MS的安全认证信息的带宽请求消息; 并且聚合MS的带宽请求消息,并向目标BS发送包括MS的安全认证信息和带宽请求信息的测距请求消息。 因此,可以减少在常规连接建立过程中对于带宽请求是不可避免的切换延迟时间,并且可以通过允许网络重入步骤中的安全相关处理来实现具有可靠性保证的切换 。