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    • 66. 发明授权
    • BACKHAUL SIGNALING FOR INTERFERENCE AVOIDANCE
    • BACKHAUL-SIGNALISIERUNG ZUR VERMEIDUNG VON INTERFERENZEN
    • EP2238779B1
    • 2015-10-28
    • EP08872061.0
    • 2008-11-10
    • QUALCOMM Incorporated
    • KHANDEKAR, AamodAGRAWAL, AvneeshSAMPATH, AshwinHORN, Gavin B.GOROKHOV, AlexeiBHUSHAN, NagaJI, Tingfang
    • H04W52/24H04W16/14H04W16/10H04W16/24H04W72/02H04W88/08H04W48/08
    • H04W72/082H04W52/243H04W72/0426H04W84/045H04W92/20Y02D70/00
    • Providing for interference reduction and/or avoidance utilizing backhaul signaling between wireless access points (APs) of a wireless access network (AN) is described herein. By way of example, an interference avoidance request (IAR) can be issued by an AP to reduce signal interference on forward link (FL) and/or downlink (DL) transmissions by neighboring APs. The IAR can be routed via a backhaul network and/or over-the-air via access terminals (ATs) coupled with the AP or one or more interfering APs. Upon receiving the IAR, an interfering AP can determine reduced transmit power levels for FL and/or RL transmissions and respond to the IAR. The response can include reduced power levels and can be sent via the backhaul network or OTA. By employing the backhaul network in full or in part, interference avoidance can be conducted even for semi-planned or unplanned heterogeneous networks coupled by the backhaul.
    • 本文描述了在无线接入网络(AN)的无线接入点(AP)之间利用回程信令来提供干扰减少和/或避免。 作为示例,AP可以发出干扰避免请求(IAR),以减少相邻AP在前向链路(FL)和/或下行链路(DL)传输上的信号干扰。 IAR可以经由回程网络和/或通过与AP或一个或多个干扰AP耦合的接入终端(AT)进行路由。 在接收到IAR时,干扰AP可以确定FL和/或RL传输的降低的发射功率电平并响应IAR。 响应可以包括降低的功率电平,并且可以通过回程网络或OTA发送。 通过全面或部分采用回程网络,即使对于通过回程耦合的半计划或计划外异构网络,也可以进行干扰回避。
    • 69. 发明公开
    • ADAPTATION OF HANDOVER PARAMETERS
    • ANPASSUNG VON WEITERREICHUNGSPARAMETERN
    • EP2386171A2
    • 2011-11-16
    • EP10700138.0
    • 2010-01-06
    • QUALCOMM Incorporated
    • CATOVIC, AmerAGASHE, Parag A.GUPTA, RajarshiHORN, Gavin B.PRAKASH, RajatULUPINAR, Fatih
    • H04W24/02H04W88/08
    • H04W36/30H04W24/02H04W36/0083H04W36/0094
    • Handover parameter settings are automatically adapted in access points in a system to improve handover performance. Reactive detection techniques are employed for identifying different types of handover-related failures and adapting handover parameters based on this detection. Messaging schemes are also employed for providing handover-related information to access points. Proactive detection techniques also may be used for identifying conditions that may lead to handover-related failures and then adapting handover parameters in an attempt to prevent such handover-related failures. Ping-ponging may be mitigated by adapting handover parameters based on analysis of access terminal visited cell history acquired by access points in the system. In addition, configurable parameters (e.g., timer values) may be used to detect handover-related failures.
    • 切换参数设置在系统的接入点自动调整,以提高切换性能。 基于这种检测,采用无功检测技术来识别不同类型的切换相关故障并适应切换参数。 消息传递方案也用于向接入点提供切换相关信息。 主动检测技术还可以用于识别可能导致切换相关故障的条件,然后适配切换参数以试图防止这种与切换有关的故障。 可以通过基于系统中接入点获取的接入终端访问小区历史的分析来适配切换参数来减轻乒乓球。 此外,可以使用可配置的参数(例如,定时器值)来检测切换相关的故障。