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    Interference reduction request in a wireless communication system
    11.
    发明授权
    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：US08843069B2

    公开(公告)日：2014-09-23

    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： H04W28/00 ,  H04W52/24 ,  H04B17/00 ,  H04B7/06

    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。

    SHORT-TERM INTERFERENCE MITIGATION IN A WIRELESS COMMUNICATION SYSTEM
    14.
    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
    15.
    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。

    BACKHAUL SIGNALING FOR INTERFERENCE AVOIDANCE
    16.
    发明申请
    BACKHAUL SIGNALING FOR INTERFERENCE AVOIDANCE 有权
    用于干扰避免的反向信号

    公开(公告)号：US20090197588A1

    公开(公告)日：2009-08-06

    申请号：US12260849

    申请日：2008-10-29

    申请人： Aamod Khandekar ,  Avneesh Agrawal ,  Ashwin Sampath ,  Gavin B. Horn ,  Alexei Gorokhov ,  Naga Bhushan ,  Tingfang Ji

    发明人： Aamod Khandekar ,  Avneesh Agrawal ,  Ashwin Sampath ,  Gavin B. Horn ,  Alexei Gorokhov ,  Naga Bhushan ,  Tingfang Ji

    IPC分类号： H04W4/00 ,  H04B1/00

    CPC分类号： H04W72/082 ,  H04W52/243 ,  H04W72/0426 ,  H04W84/045 ,  H04W92/20 ,  Y02D70/00

    摘要： 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.

    摘要翻译： 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减少干扰和/或避免的干扰。 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可以确定用于FL和/或RL传输的降低的发射功率电平并响应于IAR。 响应可以包括降低的功率级别，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。

    BEACON SYMBOL ORTHOGONALIZATION
    18.
    发明申请
    BEACON SYMBOL ORTHOGONALIZATION 有权
    BEACON符号正交定性

    公开(公告)号：US20100046447A1

    公开(公告)日：2010-02-25

    申请号：US12446689

    申请日：2007-10-26

    申请人： Ravi Palanki ,  Alexei Gorokhov ,  Aamod Khandekar ,  Avneesh Agrawal

    发明人： Ravi Palanki ,  Alexei Gorokhov ,  Aamod Khandekar ,  Avneesh Agrawal

    IPC分类号： H04W72/04

    CPC分类号： H04L27/261 ,  H04W28/00 ,  H04W72/04

    摘要： Beacon symbols are sent periodically from the base stations in an OFDM system. The entire power of the base station, or a large portion of it is concentrated in these symbols, thus they are very easily recognized by the mobile stations. The frequencies upon which these symbols are transmitted and the time at which they are transmitted communicates information such as the base station/sector identity and the preferred carrier of the given base station/sector to the mobile station. In order to avoid collision between the beacon symbols of different base stations and sectors, the beacon symbols from different base stations/sectors are transmitted at different symbols times and on different subcarriers.

    摘要翻译： 信标符号在OFDM系统中从基站周期性地发送。 基站的整个功率或其大部分集中在这些符号中，因此它们被移动台非常容易地识别。 发送这些符号的频率和它们被发送的时间将诸如基站/扇区标识和给定基站/扇区的优选载波的信息传送给移动站。 为了避免不同基站和扇区的信标符号之间的冲突，来自不同基站/扇区的信标符号在不同的符号时间和不同子载波上发送。

    FEC CODE AND CODE RATE SELECTION BASED ON PACKET SIZE
    19.
    发明申请
    FEC CODE AND CODE RATE SELECTION BASED ON PACKET SIZE 有权
    基于分组大小的FEC码和码率选择

    公开(公告)号：US20080168332A1

    公开(公告)日：2008-07-10

    申请号：US11943172

    申请日：2007-11-20

    申请人： Ravi Palanki ,  Jeremy H. Lin ,  Aamod Khandekar ,  Alexei Gorokhov ,  Avneesh Agrawal

    发明人： Ravi Palanki ,  Jeremy H. Lin ,  Aamod Khandekar ,  Alexei Gorokhov ,  Avneesh Agrawal

    IPC分类号： H03M13/05 ,  G06F11/10

    CPC分类号： H04L1/0007 ,  H04L1/0009 ,  H04L1/0021 ,  H04L1/0042 ,  H04L1/1812 ,  H04L1/1822

    摘要： Techniques for encoding and decoding data are described. In an aspect, multiple code rates for a forward error correction (FEC) code may be supported, and a suitable code rate may be selected based on packet size. A transmitter may obtain at least one threshold to use for code rate selection, determine a packet size to use for data transmission, and select a code rate from among the multiple code rates based on the packet size and the at least one threshold. In another aspect, multiple FEC codes of different types (e.g., Turbo, LDPC, and convolutional codes) may be supported, and a suitable FEC code may be selected based on packet size. The transmitter may obtain at least one threshold to use for FEC code selection and may select an FEC code from among the multiple FEC codes based on the packet size and the at least one threshold.

    摘要翻译： 描述用于编码和解码数据的技术。 在一方面，可以支持用于前向纠错（FEC）码的多个码率，并且可以基于分组大小来选择合适的码率。 发射机可以获得用于码率选择的至少一个阈值，确定用于数据传输的分组大小，并且基于分组大小和至少一个阈值从多个码率中选择码率。 在另一方面，可以支持不同类型的多个FEC码（例如，Turbo，LDPC和卷积码），并且可以基于分组大小来选择合适的FEC码。 发射机可以获得用于FEC码选择的至少一个阈值，并且可以基于分组大小和至少一个阈值从多个FEC码中选择FEC码。

    FEC code and code rate selection based on packet size
    20.
    发明授权
    FEC code and code rate selection based on packet size 有权
    基于分组大小的FEC码和码率选择

    公开(公告)号：US08566676B2

    公开(公告)日：2013-10-22

    申请号：US11943172

    申请日：2007-11-20

    申请人： Ravi Palanki ,  Jeremy H. Lin ,  Aamod Khandekar ,  Alexei Gorokhov ,  Avneesh Agrawal

    发明人： Ravi Palanki ,  Jeremy H. Lin ,  Aamod Khandekar ,  Alexei Gorokhov ,  Avneesh Agrawal

    IPC分类号： H03M13/00

    CPC分类号： H04L1/0007 ,  H04L1/0009 ,  H04L1/0021 ,  H04L1/0042 ,  H04L1/1812 ,  H04L1/1822

    摘要： Techniques for encoding and decoding data are described. In an aspect, multiple code rates for a forward error correction (FEC) code may be supported, and a suitable code rate may be selected based on packet size. A transmitter may obtain at least one threshold to use for code rate selection, determine a packet size to use for data transmission, and select a code rate from among the multiple code rates based on the packet size and the at least one threshold. In another aspect, multiple FEC codes of different types (e.g., Turbo, LDPC, and convolutional codes) may be supported, and a suitable FEC code may be selected based on packet size. The transmitter may obtain at least one threshold to use for FEC code selection and may select an FEC code from among the multiple FEC codes based on the packet size and the at least one threshold.

    摘要翻译： 描述用于编码和解码数据的技术。 在一方面，可以支持用于前向纠错（FEC）码的多个码率，并且可以基于分组大小来选择合适的码率。 发射机可以获得用于码率选择的至少一个阈值，确定用于数据传输的分组大小，并且基于分组大小和至少一个阈值从多个码率中选择码率。 在另一方面，可以支持不同类型的多个FEC码（例如，Turbo，LDPC和卷积码），并且可以基于分组大小来选择合适的FEC码。 发射机可以获得用于FEC码选择的至少一个阈值，并且可以基于分组大小和至少一个阈值从多个FEC码中选择FEC码。