利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

415 条记录 (耗时 0.042 秒)

    METHODS AND APPARATUS FOR MEASURING, COMMUNICATING AND/OR USING INTERFERENCE INFORMATION
    83.
    发明申请
    METHODS AND APPARATUS FOR MEASURING, COMMUNICATING AND/OR USING INTERFERENCE INFORMATION 有权
    用于测量，通信和/或使用干扰信息的方法和装置

    公开(公告)号：US20110019770A1

    公开(公告)日：2011-01-27

    申请号：US12892578

    申请日：2010-09-28

    申请人： Alexei Yurievitch Gorokhov ,  Aamod Khandekar ,  Ravi Palanki ,  Rajat Prakash

    发明人： Alexei Yurievitch Gorokhov ,  Aamod Khandekar ,  Ravi Palanki ,  Rajat Prakash

    IPC分类号： H04L25/49

    CPC分类号： H04L27/2613 ,  H04B17/24 ,  H04B17/345 ,  H04B17/382 ,  H04L1/0026 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0091 ,  H04W16/14 ,  H04W52/08 ,  H04W52/24 ,  H04W52/243 ,  H04W52/247 ,  H04W72/082

    摘要： Wireless communications methods and apparatus are described. A communications apparatus, e.g., a base station, measures interference information, e.g., other sector interference information. The communications apparatus generates a preamble which includes a plurality of pilot symbols and at least one of the pilot symbols includes interference information. In some embodiments, the preamble is part of a superframe structure, e.g., a recurring superframe structure, including the preamble and a plurality of frames, at least some of the frames used to convey traffic data. The communications apparatus transmits the preamble, thus broadcasting the interference information to access terminals in the vicinity. An access terminal receives the preamble including a plurality of pilot signals, at least one of the pilot signals including interference information. The access terminal recovers the interference information from the received preamble and controls signal transmission based on the recovered interference information.

    摘要翻译： 描述了无线通信方法和装置。 通信装置，例如基站，测量干扰信息，例如其他扇区干扰信息。 通信装置生成包括多个导频符号的前导码，并且导频符号中的至少一个包括干扰信息。 在一些实施例中，前导码是超帧结构的一部分，例如，包括前导码和多个帧的循环超帧结构，用于传送业务数据的至少一些帧。 通信装置发送前导码，从而将干扰信息广播到附近的接入终端。 接入终端接收包括多个导频信号的前导码，所述导频信号中的至少一个包括干扰信息。 接入终端从接收到的前导码中恢复干扰信息，并根据恢复的干扰信息控制信号传输。

    SHORT-TERM INTERFERENCE MITIGATION IN A WIRELESS COMMUNICATION SYSTEM
    84.
    发明申请
    SHORT-TERM INTERFERENCE MITIGATION IN A WIRELESS COMMUNICATION SYSTEM 有权
    无线通信系统中的短暂干扰减轻

    公开(公告)号：US20090197590A1

    公开(公告)日：2009-08-06

    申请号：US12261998

    申请日：2008-10-30

    申请人： Mohammad J. Borran ,  Aamod Khandekar ,  Naga Bhushan ,  Ashwin Sampath ,  Alexei Gorokhov ,  Avneesh Agrawal ,  Ravi Palanki ,  Gavin B. Horn

    发明人： Mohammad J. Borran ,  Aamod Khandekar ,  Naga Bhushan ,  Ashwin Sampath ,  Alexei Gorokhov ,  Avneesh Agrawal ,  Ravi Palanki ,  Gavin B. Horn

    IPC分类号： H04W24/00 ,  H04W72/00

    CPC分类号： H04W72/048 ,  H04W52/242 ,  H04W52/243 ,  H04W52/28 ,  H04W52/325 ,  H04W52/34

    摘要： Techniques for transmitting data with short-term interference mitigation in a wireless communication system are described. In one design, a serving base station may send a message to a terminal to trigger short-term interference mitigation. In response, the terminal may send a message to request at least one interfering base station to reduce interference on at least one resource. Each interfering base station may determine a transmit power level to be used for the at least one resource and may send a pilot at this transmit power level. The terminal may estimate the channel quality of the at least one resource based on at least one pilot received from the at least one interfering base station. The terminal may send information indicative of the estimated channel quality to the serving base station. The serving base station may send a data transmission on the at least one resource to the terminal.

    摘要翻译： 描述了在无线通信系统中发送具有短期干扰抑制的数据的技术。 在一种设计中，服务基站可以向终端发送消息以触发短期干扰减轻。 作为响应，终端可以发送消息以请求至少一个干扰基站以减少对至少一个资源的干扰。 每个干扰基站可以确定要用于至少一个资源的发射功率电平，并且可以以该发射功率电平发送导频。 终端可以基于从至少一个干扰基站接收的至少一个导频来估计至少一个资源的信道质量。 终端可以向服务基站发送表示估计的信道质量的信息。 服务基站可以向终端发送至少一个资源上的数据传输。

    INTERFERENCE REDUCTION REQUEST IN A WIRELESS COMMUNICATION SYSTEM
    85.
    发明申请
    INTERFERENCE REDUCTION REQUEST IN A WIRELESS COMMUNICATION SYSTEM 有权
    无线通信系统中的干扰减少请求

    公开(公告)号：US20090197538A1

    公开(公告)日：2009-08-06

    申请号：US12262013

    申请日：2008-10-30

    申请人： Mohammad J. Borran ,  Aamod Khandekar ,  Naga Bhushan ,  Ashwin Sampath ,  Alexei Gorokhov ,  Avneesh Agrawal ,  Ravi Palanki ,  Gavin B. Horn

    发明人： Mohammad J. Borran ,  Aamod Khandekar ,  Naga Bhushan ,  Ashwin Sampath ,  Alexei Gorokhov ,  Avneesh Agrawal ,  Ravi Palanki ,  Gavin B. Horn

    IPC分类号： H04B1/00

    CPC分类号： H04W52/243 ,  H04B7/0617 ,  H04B17/382 ,  H04W52/247

    摘要： Techniques for transmitting data with short-term interference mitigation in a wireless communication system are described. In one design, a first station (e.g., a base station or a terminal) may send a first message to at least one interfering station to request reduction of interference on at least one resource. The first station may send the first message in anticipation of receiving data on the at least one resource. An interfering station may receive the first message from the first station and may reduce interference on the at least one resource by reducing its transmit power and/or by steering its power in a direction different from the first station. The first station may thereafter receive data from a second station on the at least one resource. The techniques may be used for data transmission on the forward and reverse links.

    摘要翻译： 描述了在无线通信系统中发送具有短期干扰抑制的数据的技术。 在一种设计中，第一站（例如，基站或终端）可以向至少一个干扰站发送第一消息，以请求减少对至少一个资源的干扰。 第一站可以发送第一消息以预期在至少一个资源上接收数据。 干扰站可以从第一站接收第一消息，并且可以通过减少其发射功率和/或通过在与第一站不同的方向上转向其功率来减少对至少一个资源的干扰。 此后，第一站可以在至少一个资源上从第二站接收数据。 这些技术可以用于前向和反向链路上的数据传输。

    Pruned bit-reversal interleaver
    86.
    发明授权
    Pruned bit-reversal interleaver 有权
    修剪的位反转交织器

    公开(公告)号：US07543197B2

    公开(公告)日：2009-06-02

    申请号：US11022485

    申请日：2004-12-22

    申请人： Ravi Palanki ,  Aamod Khandekar

    发明人： Ravi Palanki ,  Aamod Khandekar

    IPC分类号： G06F11/00 ,  H03M13/03

    CPC分类号： H03M13/2789 ,  H03M13/2757 ,  H03M13/276

    摘要： A pruned bit-reversal interleaver supports different packet sizes and variable code rates and provides good spreading and puncturing properties. To interleave data, a packet of input data of a first size is received. The packet is extended to a second size that is a power of two, e.g., by appending padding or properly generating write addresses. The extended packet is interleaved in accordance with a bit-reversal interleaver of the second size, which reorders the bits in the extended packet based on their indices. A packet of interleaved data is formed by pruning the output of the bit-reversal interleaver, e.g., by removing the padding or properly generating read addresses. The pruned bit-reversal interleaver may be used in combination with various types of FEC codes such as a Turbo code, a convolutional code, or a low density parity check (LDPC) code.

    摘要翻译： 修剪的位反转交错器支持不同的分组大小和可变代码率，并提供良好的扩展和打孔属性。 为了交织数据，接收到第一大小的输入数据的分组。 例如，通过附加填充或适当地生成写入地址，将分组扩展到二次幂的第二大小。 扩展分组根据第二大小的位反转交织器进行交织，根据它们的索引对扩展分组中的比特进行重新排序。 通过例如通过去除填充或适当地生成读取地址来修剪比特反转交织器的输出来形成交织数据的分组。 修剪的位反转交织器可以与诸如Turbo码，卷积码或低密度奇偶校验（LDPC）码的各种类型的FEC码组合使用。

    PERSISTENT INTERFERENCE MITIGATION IN A WIRELESS COMMUNICATION SYSTEM
    87.
    发明申请
    PERSISTENT INTERFERENCE MITIGATION IN A WIRELESS COMMUNICATION SYSTEM 有权
    无线通信系统中的干扰干扰减轻

    公开(公告)号：US20090130980A1

    公开(公告)日：2009-05-21

    申请号：US12262576

    申请日：2008-10-31

    申请人： Ravi Palanki ,  Aamod Khandekar ,  Naga Bhushan

    发明人： Ravi Palanki ,  Aamod Khandekar ,  Naga Bhushan

    IPC分类号： H04B1/00 ,  H04B7/00

    CPC分类号： H04W74/0816 ,  H04B7/0617 ,  H04L5/0048 ,  H04W52/241 ,  H04W52/325 ,  H04W72/0426 ,  H04W72/046 ,  H04W72/08 ,  H04W72/082 ,  H04W72/14 ,  H04W88/02 ,  H04W88/08

    摘要： Techniques for transmitting data with persistent interference mitigation in a wireless communication system are described. A station (e.g., a base station or a terminal) may observe high interference and may send a request to reduce interference to interfering stations. The request may be valid for a time period covering multiple response periods. Each interfering station may grant or dismiss the request in each response period, may dismiss the request by transmitting at full power, and may grant the request by transmitting at lower than full power. The station may receive a response from each interfering station indicating grant or dismissal of the request by that interfering station in each response period. The station may estimate SINR based on the response received from each interfering station and may exchange data with another station based on the estimated SINR. Persistent interference mitigation may reduce signaling overhead and improve resource utilization and performance.

    摘要翻译： 描述了在无线通信系统中传输具有持续干扰减轻的数据的技术。 站（例如，基站或终端）可以观察到高干扰，并且可以发送减少对干扰站的干扰的请求。 该请求可以在覆盖多个响应周期的时间段内有效。 每个干扰站可以在每个响应周期中授权或者解除请求，可以通过全功率发射来解除请求，并且可以以低于全功率的方式发送请求。 站点可以从每个干扰站接收指示在每个响应周期中该干扰站的请求的授权或解除的响应。 该站可以基于从每个干扰站接收到的响应估计SINR，并且可以基于估计的SINR与另一个站交换数据。 持续的干扰减轻可以减少信令开销并提高资源利用率和性能。

    WIRELESS COMMUNICATION CHANNEL BLANKING
    88.
    发明申请
    WIRELESS COMMUNICATION CHANNEL BLANKING 有权
    无线通信通道空白

    公开(公告)号：US20090130979A1

    公开(公告)日：2009-05-21

    申请号：US12163835

    申请日：2008-06-27

    申请人： Naga Bhushan ,  Aamod Khandekar ,  Ravi Palanki

    发明人： Naga Bhushan ,  Aamod Khandekar ,  Ravi Palanki

    IPC分类号： H04B15/00

    CPC分类号： H04W52/243 ,  H04W52/325 ,  H04W52/38 ,  H04W52/44

    摘要： Systems and methodologies are described that facilitate blanking on portions of bandwidth utilized by communicating devices that are dominantly interfered by a disparate device in wireless communications networks. The portions of bandwidth can relate to critical data, such as control data, and one or more of the communicating devices can request that the dominantly interfering device blank on one or more of the portions. The communicating devices can subsequently transmit data over the blanked portions free of the dominant interference. Additionally, the dominantly interfering device can request reciprocal blanking from the one or more communicating devices.

    摘要翻译： 描述了系统和方法，其有助于消除由无线通信网络中的不同设备主要干扰的通信设备所使用的带宽部分的消隐。 带宽的部分可以与诸如控制数据的关键数据相关联，并且一个或多个通信设备可以请求在一个或多个部分上的主要干扰设备空白。 通信设备可以随后在没有主导干扰的消隐部分上发送数据。 此外，主要干扰装置可以从一个或多个通信装置请求相互消隐。

    CENTER FREQUENCY CONTROL FOR WIRELESS COMMUNICATION
    89.
    发明申请
    CENTER FREQUENCY CONTROL FOR WIRELESS COMMUNICATION 失效
    无线通信中心频率控制

    公开(公告)号：US20090093216A1

    公开(公告)日：2009-04-09

    申请号：US12238832

    申请日：2008-09-26

    申请人： Jing Sun ,  Aamod Khandekar ,  Ravi Palanki

    发明人： Jing Sun ,  Aamod Khandekar ,  Ravi Palanki

    IPC分类号： H04B17/00

    CPC分类号： H04L5/0007 ,  H04L5/0044 ,  H04W72/00

    摘要： The method and apparatus as described are directed toward techniques and mechanisms to improve efficient wireless network implementation, including obtaining one specification including a center frequency definition, determining, based on the specification, a center frequency of at least one carrier used to operate on the wireless communication system, determining an amount of dithering to add to the center frequency, and setting the center frequency to be multiples of sub-carrier spacing by adding the dithering.

    摘要翻译： 所描述的方法和装置涉及改进有效的无线网络实现的技术和机制，包括获得包括中心频率定义的一个规范，基于规范确定用于在无线网络上操作的至少一个载波的中心频率 通信系统，确定要添加到中心频率的抖动量，以及通过添加抖动将中心频率设置为副载波间隔的倍数。