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    • 92. 发明授权
    • System and method to enable uplink control for restricted association networks
    • 用于限制关联网络的上行链路控制的系统和方法
    • US08442069B2
    • 2013-05-14
    • US12419831
    • 2009-04-07
    • Tingfang JiTao LuoXiaoxia Zhang
    • Tingfang JiTao LuoXiaoxia Zhang
    • H04J3/16
    • H04W72/082H04W16/12H04W84/045
    • Systems and methodologies are described that facilitate resource management in a wireless communication system. Various techniques described herein can enable a network cell in a wireless communication system (e.g. a macro cell) to mitigate the effects of interference on other surrounding network cells (e.g., femto cells embedded within the coverage of the macro cell). For example, a network cell can allocate control resources that overlap control resources of a nearby cell and assign resources within the region of overlap only to users that will not cause substantial interference to the nearby cell. As another example, a network cell can utilize a control channelization that partially coincides with a control and/or random access channelization of a nearby cell. The network cell can subsequently elect not to use the control resources in the coinciding region in order to enable the nearby cell to control the effects of interference though data scheduling.
    • 描述了促进无线通信系统中的资源管理的系统和方法。 本文描述的各种技术可以使得无线通信系统(例如,宏小区)中的网络小区能够减轻对其他周围网络小区(例如,嵌入在宏小区的覆盖范围内的毫微微小区)的干扰的影响。 例如,网络小区可以分配与附近小区的控制资源重叠的控制资源,并且在重叠区域内的资源仅分配给不会对附近小区造成实质干扰的用户。 作为另一示例,网络小区可以利用与附近小区的控制和/或随机接入信道化部分重合的控制信道化。 网络小区随后可以选择不使用重合区域中的控制资源,以使附近小区能够通过数据调度来控制干扰的影响。
    • 95. 发明申请
    • INTERFERENCE CANCELATION USING EDGE SIGNALS FOR SYNCHRONIZATION SIGNAL DETECTION
    • 干扰消除使用边缘信号进行同步信号检测
    • US20120076213A1
    • 2012-03-29
    • US13077685
    • 2011-03-31
    • Xiaoxia ZhangTao Luo
    • Xiaoxia ZhangTao Luo
    • H04L27/00H04B15/00H04B7/26
    • H04L27/2662H04J11/0056H04J11/0069H04L5/0023H04L5/0048
    • In 3GPP Release (Rel) 8, a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) may be transmitted in six resource blocks, occupying, for example, the center 62 tones (i.e., subcarriers) of an LTE-A system, wherein the center tone may be skipped. In synchronous networks, cells may transmit their respective PSS and SSS on the same frequency at the same time, wherein strong cells may overshadow the weak ones. However, strong cells may not be the serving cell for a user equipment (UE), particularly in a heterogeneous network. Traditionally, interference cancelation, an enhanced receiver technique, has been used, wherein the UE may first find the strong cells and cancel them out to find the serving cell. However, due to propagation delay and synchronization uncertainty, a timing offset may exist among cells, even in synchronous networks. Therefore, systems and methods are disclosed, providing for improved handling of the timing offset among different cells by applying a time domain cancelation.
    • 在3GPP Release(Rel)8中,可以在六个资源块中发送主同步信号(PSS)和次同步信号(SSS),占用例如LTE-A的中心62个音调(即,子载波) 系统,其中可以跳过中心音。 在同步网络中,小区可以同时在相同的频率上传送它们各自的PSS和SSS,其中强的小区可以遮蔽弱的小区。 然而,强小区可能不是用户设备(UE)的服务小区,特别是在异构网络中。 传统上,已经使用干扰消除,增强的接收机技术,其中,UE可以首先找到强小区并将其消除以找到服务小区。 然而,由于传播延迟和同步不确定性,即使在同步网络中,也可能在单元之间存在定时偏移。 因此,公开了系统和方法,通过应用时域消除来提供不同小区之间的定时偏移的改进处理。
    • 96. 发明申请
    • SAMPLE SELECTION FOR SECONDARY SYNCHRONIZATION SIGNAL (SSS) DETECTION
    • 用于二次同步信号(SSS)检测的样本选择
    • US20120046056A1
    • 2012-02-23
    • US13212812
    • 2011-08-18
    • Tao LuoKapil BhattadXiaoxia ZhangTaesang YooXiliang LuoKe Liu
    • Tao LuoKapil BhattadXiaoxia ZhangTaesang YooXiliang LuoKe Liu
    • H04B7/24
    • H04W56/001H04J11/005H04J11/0069H04J11/0093H04W24/02H04W72/042
    • Methods and apparatus for selecting samples for secondary synchronization signal (SSS) detection are described. Several alternatives are provided for efficient cell identifier detection. In a first alternative, multiple bursts of a signal received from a cell are sampled with non-uniform spacing between sampling intervals to determine a sequence for cell identification. In a second alternative, samples of a first and a second signal received from a stronger cell are cancelled, and a sequence for detecting a weaker cell is determined by reducing effects of the samples of a third signal received from the weaker cell which do not overlap with the primary synchronization signal (PSS) or SSS of the stronger cell. In a third alternative, a sequence for detecting a weaker cell is determined by reducing effects of any sampled bursts that correspond to a high transmission power portion of a signal from a stronger cell.
    • 描述了用于选择二次同步信号(SSS)检测的样本的方法和装置。 提供了多种替代方案用于高效的小区标识符检测。 在第一替代方案中,从采样间隔之间以不均匀的间隔对从小区接收的信号的多个突发进行采样,以确定用于小区识别的序列。 在第二替代方案中,从较强小区接收到的第一和第二信号的样本被取消,并且用于检测较弱小区的序列是通过减少从不重叠的较弱小区接收的第三信号的样本的影响来确定的 具有较强小区的主同步信号(PSS)或SSS。 在第三替代方案中,用于检测较弱小区的序列通过减少对应于来自较强小区的信号的高发射功率部分的任何采样突发的影响来确定。
    • 99. 发明申请
    • METHOD AND APPARATUS FOR FACILITATING A LAYERED CELL SEARCH FOR LONG TERM EVOLUTION SYSTEMS
    • 促进长期演进系统的层状细胞搜索的方法和装置
    • US20110287792A1
    • 2011-11-24
    • US12949233
    • 2010-11-18
    • Xiaoxia ZhangTao Luo
    • Xiaoxia ZhangTao Luo
    • H04W28/18
    • H04J11/0056H04J11/0043H04J11/0093
    • A method for ranking signals isolates and cancels neighboring cells using layering. Received signals from various cells are grouped into layers, with each layer comprised of received signals which are comparable within a particular metric (such as signal strength). The signals within a particular layer may also be ranked according to a desired metric. At the beginning of a cancellation cycle the UE may perform the layering and ranking. Once the layering and ranking has been performed the UE may continue to use the layering and ranking for later rounds of cancellation, freeing up processing resources that would otherwise be dedicated to repeated ranking of received signals. After a period of time, the cancellation cycle may repeat and the layering and ranking may be performed again.
    • 用于对信号进行排序的方法使用分层隔离并消除相邻小区。 来自各个小区的接收信号被分组成层,每层包括在特定度量(例如信号强度)内可比较的接收信号。 特定层内的信号也可以根据期望的度量进行排名。 在取消周期的开始,UE可以执行分层和排序。 一旦已经执行分层和排序,UE可以继续使用分层和排序来进行后续的取消,从而释放否则将专用于接收信号的重复排序的处理资源。 经过一段时间后,取消周期可能重复,可以再次执行分层和排序。