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    Method and apparatus for interference management in a wireless communication system
    71.
    发明授权
    Method and apparatus for interference management in a wireless communication system 失效
    无线通信系统中干扰管理的方法和装置

    公开(公告)号：US08619563B2

    公开(公告)日：2013-12-31

    申请号：US12698349

    申请日：2010-02-02

    申请人： Ritesh K. Madan ,  Jaber M. Borran ,  Aamod D. Khandekar ,  Tingfang Ji ,  Ashwin Sampath

    发明人： Ritesh K. Madan ,  Jaber M. Borran ,  Aamod D. Khandekar ,  Tingfang Ji ,  Ashwin Sampath

    IPC分类号： H04L12/26

    CPC分类号： H04W52/243 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0062 ,  H04L5/0064 ,  H04L5/0067 ,  H04L5/0075 ,  H04L5/0085 ,  H04L5/0087 ,  H04L5/0094 ,  H04L25/0228 ,  H04W52/26 ,  H04W52/34 ,  H04W72/0426 ,  H04W72/08

    摘要： Systems and methodologies are described herein that facilitate interference control and resource management in a wireless communication system. As described herein, a base station, terminal, and/or other entity in a wireless communication system that observes interference from one or more other network entities can construct and communicate resource utilization messages (RUMs) in order to request the interfering network entities to conduct power backoff on designated resources. Parameters constructed as a function of quality of service (QoS) and/or priority metrics (such as head-of-line delays, queue lengths, burst sizes, delay targets, average rates, or the like) can be included within the RUM, such that an entity receiving the RUM can compute QoS changes associated with various power backoff levels in order to select a power backoff level that maximizes overall system QoS performance.

    摘要翻译： 本文描述了促进无线通信系统中的干扰控制和资源管理的系统和方法。 如本文所述，观察来自一个或多个其他网络实体的干扰的无线通信系统中的基站，终端和/或其他实体可以构建和通信资源利用消息（RUM），以便请求干扰网络实体进行 指定资源的电力回馈。 作为服务质量（QoS）和/或优先级度量（诸如线路延迟，队列长度，突发大小，延迟目标，平均速率等）的函数构造的参数可以包括在RUM内， 使得接收RUM的实体可以计算与各种功率回退电平相关联的QoS变化，以便选择最大化整个系统QoS性能的功率回退电平。

    Method and apparatus for sequencing and correlating a positioning reference signal
    73.
    发明授权
    Method and apparatus for sequencing and correlating a positioning reference signal 有权
    用于对定位参考信号进行排序和关联的方法和装置

    公开(公告)号：US08401111B2

    公开(公告)日：2013-03-19

    申请号：US12722395

    申请日：2010-03-11

    申请人： Ashwin Sampath ,  Ravi Palanki ,  Aamod D. Khandekar ,  Raja Sekhar Bachu

    发明人： Ashwin Sampath ,  Ravi Palanki ,  Aamod D. Khandekar ,  Raja Sekhar Bachu

    IPC分类号： H04L27/00

    CPC分类号： H04W64/00 ,  G01S1/042 ,  G01S1/24 ,  G01S5/0226

    摘要： Aspects are disclosed for sequencing and correlating a positioning reference signal. A set of reference symbols associated with a reference signal are allocated, and a base sequence is generated. An extended sequence, which includes the set of reference symbols, is then provided according to the base sequence. The extended sequence is then transmitted in a sub-frame designated as an idle period. A sequence of reference symbols is received from a base station during an idle period of the base station. A replicated sequence of reference symbols is generated, and a correlation is ascertained between a subset of the received sequence of reference symbols and a corresponding subset of the replicated sequence of reference symbols. The received sequence of reference symbols is then identified according to the correlation.

    摘要翻译： 公开了用于对定位参考信号进行排序和关联的方面。 分配与参考信号相关联的一组参考符号，并生成基本序列。 然后根据基本序列提供包括参考符号集合的扩展序列。 扩展序列然后在指定为空闲时段的子帧中传输。 在基站的空闲周期期间，从基站接收到一系列参考符号。 生成参考符号的复制序列，并且在所接收的参考符号序列的子集与参考符号的复制序列的对应子集之间确定相关性。 然后根据相关性来识别所接收的参考符号序列。

    WIRELESS COMMUNICATION COLLISION DETECTION
    76.
    发明申请
    WIRELESS COMMUNICATION COLLISION DETECTION 审中-公开
    无线通信冲突检测

    公开(公告)号：US20090219905A1

    公开(公告)日：2009-09-03

    申请号：US12395230

    申请日：2009-02-27

    申请人： Aamod D. Khandekar ,  Rajarshi Gupta ,  Ravi Palanki

    发明人： Aamod D. Khandekar ,  Rajarshi Gupta ,  Ravi Palanki

    IPC分类号： H04L12/28 ,  H04L12/413

    CPC分类号： H04W16/14 ,  H04W48/08

    摘要： Collisions in a wireless network are detected and resolved through the use of transmissions by access points in the network. In some aspects, each access point may select a resource from a set of resources and transmit an indication of a unique identifier (e.g., a long identifier) of that access point on the selected resource. In some aspects, each access point may select a bit and append that bit to a reused identifier (e.g., a short identifier) of that access point to provide a channelization parameter that is used to channelize signals transmitted by the access point. The selection by a given access point may be based on a unique identifier assigned to that access point. The selection by a given access point may be a pseudorandom selection (e.g., based on a corresponding unique identifier). Another node (e.g., an access terminal) in the network may identify a collision based on the transmissions by the access points. In this case, the node may transmit an indication of the collision to cause one of the access points to cease transmitting. The node may then inform one colliding access point of the existence and identity of the other colliding access point to enable the access points to resolve the collision.

    摘要翻译： 通过使用网络中接入点的传输来检测和解决无线网络中的冲突。 在一些方面，每个接入点可以从一组资源中选择一个资源，并且在所选择的资源上发送该接入点的唯一标识符（例如，长标识符）的指示。 在一些方面，每个接入点可以选择一个比特并将该比特附加到该接入点的重用标识符（例如，短标识符），以提供用于对由接入点发送的信号进行信道化的信道化参数。 给定接入点的选择可以基于分配给该接入点的唯一标识符。 给定接入点的选择可以是伪随机选择（例如，基于对应的唯一标识符）。 网络中的另一节点（例如，接入终端）可以基于接入点的传输来识别冲突。 在这种情况下，节点可以发送冲突的指示，使接入点之一停止发送。 然后，节点可以向一个冲突接入点通知另一个冲突接入点的存在和身份，以使接入点能够解决冲突。

    Synchronization of devices in a wireless communication network
    77.
    发明授权
    Synchronization of devices in a wireless communication network 有权
    无线通信网络中设备的同步

    公开(公告)号：US09042296B2

    公开(公告)日：2015-05-26

    申请号：US12841051

    申请日：2010-07-21

    申请人： Ravi Palanki ,  Aamod D. Khandekar ,  Peter Gaal

    发明人： Ravi Palanki ,  Aamod D. Khandekar ,  Peter Gaal

    IPC分类号： H04W56/00 ,  H04W92/20

    CPC分类号： H04W56/0045 ,  H04W56/0015 ,  H04W92/20

    摘要： Techniques for synchronizing devices in a wireless network are described. In an aspect, a device determines a receive time for a base station, obtains a time offset for the base station from a network entity, and sets its transmit time based on the receive time and the time offset for the base station. The time offset compensates for the degree by which the base station is asynchronous with respect to a reference time, e.g., UTC time. In another aspect, a device determines and sends time difference information (e.g., a time offset or a TDOA measurement) for at least one base station to support synchronization of other devices. In yet another aspect, a network entity supports synchronization of devices, receives time difference information for at least one base station, and determines at least one time offset for the at least one base station based on the time difference information.

    摘要翻译： 描述了用于在无线网络中同步设备的技术。 在一方面，设备确定基站的接收时间，从网络实体获得基站的时间偏移，并且基于基站的接收时间和时间偏移来设置其发送时间。 时间偏移补偿基站相对于参考时间（例如，UTC时间）是异步的程度。 在另一方面，设备确定并发送至少一个基站的时差信息（例如，时间偏移或TDOA测量）以支持其他设备的同步。 在另一方面，网络实体支持设备的同步，接收至少一个基站的时差信息，并且基于时差信息确定至少一个基站的至少一个时间偏移量。

    Method and apparatus for transmitting overload indicator over the air
    78.
    发明授权
    Method and apparatus for transmitting overload indicator over the air 有权
    用于在空气中传输过载指示器的方法和装置

    公开(公告)号：US08982750B2

    公开(公告)日：2015-03-17

    申请号：US12686260

    申请日：2010-01-12

    申请人： Ravi Palanki ,  Juan Montojo ,  Aamod D. Khandekar ,  Tao Luo ,  Kapil Bhattad

    发明人： Ravi Palanki ,  Juan Montojo ,  Aamod D. Khandekar ,  Tao Luo ,  Kapil Bhattad

    IPC分类号： H04B7/00 ,  H04L1/00 ,  H04L5/00 ,  H04L27/26 ,  H04B7/06 ,  H04L7/04

    CPC分类号： H04W28/0284 ,  H04B7/0617 ,  H04J11/005 ,  H04L1/0041 ,  H04L1/0072 ,  H04L5/0007 ,  H04L5/0053 ,  H04L7/041 ,  H04L27/2613 ,  H04W56/001 ,  H04W72/0453

    摘要： Techniques for transmitting overload indicators over the air to UEs in neighbor cells are described. In one design, an overload indicator may be transmitted as a phase difference between at least one synchronization signal and a reference signal for a cell. In another design, an overload indicator may be transmitted as a phase difference between consecutive transmissions of at least one synchronization signal for a cell. In yet another design, an overload indicator may be transmitted by a cell on resources reserved for transmitting the overload indicator. In yet another design, an overload indicator may be transmitted by a cell on a low reuse channel or a broadcast channel. For all designs, a UE may receive overload indicators from neighbor cells, determine the loading of each neighbor cell based on the overload indicator for that cell, and control its operation based on the loading of the neighbor cells.

    摘要翻译： 描述了在空中向相邻小区中的UE发送过载指示符的技术。 在一种设计中，过载指示符可以作为小区的至少一个同步信号和参考信号之间的相位差发送。 在另一种设计中，可以将过载指示符作为用于小区的至少一个同步信号的连续传输之间的相位差发送。 在另一种设计中，过载指示符可以由小区在保留用于发送过载指示符的资源上发送。 在另一种设计中，过载指示符可以由低重用信道或广播信道上的小区发送。 对于所有设计，UE可以从相邻小区接收过载指示符，基于该小区的过载指示符确定每个相邻小区的负载，并且基于相邻小区的加载来控制其操作。

    CHIP X2 CORRELATION HYPOTHESES USING CHIP X1 SAMPLES
    79.
    发明申请
    CHIP X2 CORRELATION HYPOTHESES USING CHIP X1 SAMPLES 审中-公开
    使用芯片X1样品的芯片X2相关假设

    公开(公告)号：US20130028296A1

    公开(公告)日：2013-01-31

    申请号：US13192003

    申请日：2011-07-27

    申请人： Aamod D. Khandekar ,  Dario Fertonani ,  Srikanth Gummadi

    发明人： Aamod D. Khandekar ,  Dario Fertonani ,  Srikanth Gummadi

    IPC分类号： H04B1/707

    CPC分类号： H04B1/7075 ,  H04B2001/70724 ,  H04B2201/70707 ,  H04B2201/70713 ,  H04B2201/70727

    摘要： A UE may store received samples of a wireless signal at cx1 to reduce memory usage, but then may correlate those samples with cx2 timing hypotheses to improve performance. The received sequence is resampled at cx2 instead of cx1. The UE still performs the correlation of the cx2 timing hypotheses for the performance gain, but the reference waveform is resampled with cx2 time offset. A Fast Fourier Transform (FFT) may be taken of the received and reference waveforms. In the frequency domain, resampling may be performed by multiplying the FFT of the reference waveform by a phase ramp—a pointwise multiplication in the frequency domain with a constant magnitude sequence whose phase varies linearly.

    摘要翻译： UE可以以cx1存储无线信号的接收样本以减少存储器使用，但是然后可以将这些采样与cx2定时假设相关联以提高性能。 接收的序列在cx2而不是cx1重采样。 UE仍然执行cx2定时假设与性能增益的相关性，但参考波形用cx2时间偏移重采样。 可以对接收和参考波形进行快速傅里叶变换（FFT）。 在频域中，重采样可以通过将参考波形的FFT乘以频域中的相位斜坡 - 点相乘乘以其相位线性变化的恒定幅度序列来执行。

    Wireless network synchronization
    80.
    发明授权
    Wireless network synchronization 有权
    无线网络同步

    公开(公告)号：US08213405B2

    公开(公告)日：2012-07-03

    申请号：US12354666

    申请日：2009-01-15

    申请人： Gavin B. Horn ,  Aamod D. Khandekar ,  Parag A. Agashe ,  Lei Xiao ,  Ravi Palanki

    发明人： Gavin B. Horn ,  Aamod D. Khandekar ,  Parag A. Agashe ,  Lei Xiao ,  Ravi Palanki

    IPC分类号： H04J3/06

    CPC分类号： H04J3/0679 ,  H04J3/0641

    摘要： Systems and methodologies are described that facilitate synchronizing timing among wireless nodes in a wireless communication network. A tracking wireless node can synchronize to a global positioning system (GPS) signal if available. Alternatively, the tracking wireless node can receive quality metrics related to one or more target nodes. The quality metrics can relate to parameters that can be utilized to evaluate the target node for timing synchronization. Based on the quality metrics, the tracking wireless node can select a target wireless node for timing synchronization. The tracking wireless node can subsequently synchronize timing with the target wireless node. In addition, the tracking wireless node can continually evaluate surrounding wireless nodes to detect whether other wireless nodes have higher quality metrics than the current target wireless nodes and can accordingly resynchronize with nodes having higher metrics.

    摘要翻译： 描述了有助于在无线通信网络中的无线节点之间同步定时的系统和方法。 跟踪无线节点可以与全球定位系统（GPS）信号同步，如果可用的话。 或者，跟踪无线节点可以接收与一个或多个目标节点相关的质量度量。 质量度量可以与可用于评估目标节点进行定时同步的参数相关。 基于质量度量，跟踪无线节点可以选择目标无线节点进行定时同步。 跟踪无线节点可以随后与目标无线节点同步定时。 此外，跟踪无线节点可以连续地评估周围的无线节点以检测其他无线节点是否具有比当前目标无线节点更高的质量度量，并且可以相应地与具有较高度量的节点重新同步。