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    • 84. 发明授权
    • Methods and apparatus for supporting group communications with data re-transmission support
    • 支持数据重传支持群组通信的方法和装置
    • US08861418B2
    • 2014-10-14
    • US12166603
    • 2008-07-02
    • Xinzhou WuSaurabh TavildarJunyi LiRajiv Laroia
    • Xinzhou WuSaurabh TavildarJunyi LiRajiv Laroia
    • H04H20/71H04B7/216H04L12/28H04L12/56H04J3/26H04J3/17H04W8/18H04W4/08
    • H04W4/08H04W8/186
    • Methods and apparatus related to group communications in a wireless communications system, e.g., a peer to peer wireless communications system, are described. Methods and apparatus directed to closed groups, e.g., where the number of group members are fixed at a given time and known to one or more members of the group, are described. Various embodiments are well suited to decentralized peer to peer wireless networks including a plurality of individual traffic resources, e.g., traffic slots and/or traffic segments, which may be independently scheduled in a decentralized manner. Some features and/or aspects are directed to the use of individual group member acknowledgement signaling in response to a transmitted group traffic data signal. By monitoring for anticipated individual group member acknowledgment signals and identifying members which have not signaled a positive acknowledgment, re-transmission can be directed and/or tailored to a subset of the group.
    • 描述了与无线通信系统中的组通信相关的方法和装置,例如对等无线通信系统。 描述了针对封闭组的方法和装置,例如,其中组成员的数量在给定时间被固定并且对该组的一个或多个成员已知的那些。 各种实施例非常适合于分散的对等无线网络,其包括多个单独的业务资源,例如业务时隙和/或业务段,其可以以分散的方式独立地调度。 一些特征和/或方面针对响应于所发送的组业务数据信号的单独组成员确认信令的使用。 通过监视预期的个人组成员确认信号和识别尚未发出肯定确认的成员,可以针对该组的子集来定向和/或定制重新发送。
    • 85. 发明授权
    • Methods and apparatus for providing base station position information and using position information to support timing and/or frequency corrections
    • 用于提供基站位置信息和使用位置信息以支持定时和/或频率校正的方法和装置
    • US08798638B2
    • 2014-08-05
    • US11216973
    • 2005-08-31
    • Frank A. LaneRajiv LaroiaJunyi Li
    • Frank A. LaneRajiv LaroiaJunyi Li
    • H04W24/00
    • H04W4/02H04B7/01H04W56/0025H04W56/0035H04W56/006H04W64/00H04W88/005H04W92/10
    • A wireless terminal receives base station position over an airlink, determines its relative position with respect to the base station and determines a timing adjustment correction. The wireless terminal applies the determined timing correction to control uplink signaling timing and achieve synchronization at the base station's receiver. The wireless terminal determines its relative velocity with respect to the base station and determines a Doppler shift adjustment which it adds to the uplink carrier frequency or to its baseband signal. A wireless terminal determines the position of a moving base station and determines timing and/or frequency corrections. Base station position is determined from the current time and stored information correlating the base station position with time, e.g., for a geo-synchronous satellite. Base station position information is determined from broadcast information, e.g., GPS base station position, for an aircraft base station. Wireless terminals may be mobile and include a GPS receiver for WIRELESS TERMINAL position determination.
    • 无线终端通过空中链路接收基站位置,确定其相对于基站的相对位置,并确定定时调整校正。 无线终端应用所确定的定时校正以控制上行链路信令定时,并在基站的接收机处实现同步。 无线终端确定其相对于基站的相对速度,并确定其添加到上行链路载波频率或其基带信号的多普勒频移调整。 无线终端确定移动基站的位置并确定定时和/或频率校正。 基站位置是从当前时间确定的,并存储与基站位置和时间相关的信息,例如用于地理同步卫星。 从飞机基站的广播信息(例如,GPS基站位置)确定基站位置信息。 无线终端可以是移动的,并且包括用于WIRELESS TERMINAL位置确定的GPS接收器。
    • 89. 发明授权
    • Wireless timing and power control
    • 无线定时和功率控制
    • US08620332B2
    • 2013-12-31
    • US12694805
    • 2010-01-27
    • Rajiv LaroiaJunyi LiSathyadev Uppala
    • Rajiv LaroiaJunyi LiSathyadev Uppala
    • H04W4/00
    • H04W16/12H04W16/14H04W24/00H04W36/06H04W52/0235H04W52/028H04W52/08H04W52/281H04W52/283H04W52/286H04W52/287H04W52/288H04W52/60H04W68/02H04W68/025H04W72/00H04W72/0413H04W72/048Y02D70/23
    • The use of multiple states of mobile communication device operation to allow a single base station to support a relatively large number of mobile nodes is described. The various states require different amounts of communications resources, e.g., bandwidth. Four supported states of operation are an on-state, a hold-state, a sleep-state, and an access-state. Each mobile node in the on-state is allocated communication resources to perform transmission power control signaling, transmission timing control signaling and to transmit data as part of a data uplink communications operation. Each mobile node in the hold-state is allocated communication resources to perform transmission timing control signaling and is provided a dedicated uplink for requesting a state transition and a shared resource for transmitting acknowledgements. In the sleep state a mobile node is allocated minimal resources and does not conduct power control signaling or timing control signaling. Data may be received in the on and hold states.
    • 描述了使用移动通信设备操作的多种状态来允许单个基站支持相对大量的移动节点。 各种状态需要不同数量的通信资源,例如带宽。 四个支持的操作状态是开状态,保持状态,睡眠状态和访问状态。 处于导通状态的每个移动节点被分配通信资源以执行传输功率控制信令,传输定时控制信令,并且作为数据上行链路通信操作的一部分来发送数据。 保持状态下的每个移动节点被分配通信资源以执行传输定时控制信令,并且提供用于请求状态转换的专用上行链路和用于发送确认的共享资源。 在睡眠状态下,移动节点被分配最少资源,并且不进行功率控制信令或定时控制信令。 可以在接通和保持状态下接收数据。
    • 90. 发明授权
    • Methods and apparatus for peer discovery in a communications system
    • 通信系统中对等体发现的方法和装置
    • US08605625B2
    • 2013-12-10
    • US12417383
    • 2009-04-02
    • Rajiv LaroiaJunyi LiVincent D. ParkYing WangAleksandar Jovicic
    • Rajiv LaroiaJunyi LiVincent D. ParkYing WangAleksandar Jovicic
    • H04J1/16H04L12/66G06F15/177
    • H04W8/005H04W8/186H04W48/14
    • Methods and apparatus supporting enhanced discovery operations in peer to peer networks are described. Peer discovery, based on direct peer to peer discovery between two mobile nodes can be somewhat limited, e.g., due to power limitations, processing power, and/or channel conditions. An access point, e.g., base station, monitors for and receives peer discovery signals conveying a set of identifiers from a wireless communications device. The access point retransmits at least one identifier in the set in a wireless peer to peer communications channel. Thus the access point effectively extends the peer discovery range for wireless communications devices utilizing the peer to peer network. Wireless communications devices can monitor for and recover the rebroadcast peer discovery signals from access points. Thus, via access point signaling a wireless communications device can be made situationally aware of other devices of interest which would be otherwise outside its discovery detection range.
    • 描述了支持对等网络中增强发现操作的方法和装置。 基于两个移动节点之间的直接对等点发现的对等体发现可以受到一些限制,例如由于功率限制,处理能力和/或信道条件。 接入点,例如基站,监视和接收从无线通信设备传送一组标识符的对等体发现信号。 接入点在无线对等通信信道中重发集合中的至少一个标识符。 因此,接入点有效地扩展了利用对等网络的无线通信设备的对等体发现范围。 无线通信设备可以监视和恢复来自接入点的重播对等体发现信号。 因此,通过接入点信令,可以使无线通信设备在情境上意识到其他在其发现检测范围之外的感兴趣的设备。