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    Transmit power selection for user equipment communicating with femto cells
    32.
    发明授权
    Transmit power selection for user equipment communicating with femto cells 有权
    与毫微微小区通信的用户设备的发射功率选择

    公开(公告)号：US08718696B2

    公开(公告)日：2014-05-06

    申请号：US12463705

    申请日：2009-05-11

    申请人： Mehmet Yavuz ,  Sanjiv Nanda ,  Yeliz Tokgoz

    发明人： Mehmet Yavuz ,  Sanjiv Nanda ,  Yeliz Tokgoz

    IPC分类号： H04B7/00

    CPC分类号： H04W52/146 ,  H04W52/244 ,  H04W52/367

    摘要： Transmit power for a user equipment (UE) is set by a Home NodeB (HNB) in response to interference at a nearby macrocell. The HNB monitors an interference level to the macrocell from a UE communicating with the HNB. An acceptable transmit power for the UE is determined by the HNB in response to the interference level. A power change indicator is transmitted from the HNB to the UE to adjust the transmit power of the UE. In some cases, the interference may be estimated from a busy indicator from the macrocell and the HNB sends a modified version of the busy indicator to the UE to adjust the transmit power of the UE. In other cases, the HNB estimates a path loss for the UE based on received signal power from the macrocell and signals a transmit power change to the UE, if needed, based on the estimated path loss.

    摘要翻译： 用户设备（UE）的发射功率由家庭节点B（HNB）响应于在附近的宏小区的干扰来设置。 HNB从与HNB通信的UE监视到宏小区的干扰电平。 响应于干扰电平，由HNB确定UE的可接受发射功率。 从HNB向UE发送功率变化指示符，以调整UE的发射功率。 在一些情况下，可以从宏小区的忙指示符估计干扰，HNB向UE发送忙指示符的修改版本，以调整UE的发射功率。 在其他情况下，HNB基于来自宏小区的接收信号功率来估计UE的路径损耗，并且如果需要，则基于所估计的路径损耗来向UE发送功率变化信号。

    Autonomous downlink code selection for femto cells
    33.
    发明授权
    Autonomous downlink code selection for femto cells 有权
    毫微微小区的自主下行链路码选择

    公开(公告)号：US08711786B2

    公开(公告)日：2014-04-29

    申请号：US12463701

    申请日：2009-05-11

    申请人： Mehmet Yavuz ,  Sanjiv Nanda

    发明人： Mehmet Yavuz ,  Sanjiv Nanda

    IPC分类号： H04W72/12 ,  H04W84/04

    CPC分类号： H04W84/045 ,  H04W24/02 ,  H04W72/02 ,  H04W72/0466 ,  H04W72/082

    摘要： Downlink codes may be chosen autonomously for femtocells in a wireless communication environment. Downlink transmissions are received from Home NodeBs that are neighbors of the femtocell and macrocell base stations near the femtocell. The downlink transmissions are evaluated to recognize a first set of detected downlink codes that each have a pilot energy above a predetermined detection threshold. An optimal downlink code is selected for use in connection with serving user equipment of the femtocell. The optimal downlink code is based upon the first set of detected downlink codes and selected as a downlink code from a set of downlink codes reserved for the femtocell. The optimal downlink code may be an available downlink code with a smallest amount of detected energy or a randomly selected downlink code from the available downlink codes.

    摘要翻译： 可以在无线通信环境中为毫微微小区自主选择下行链路码。 从作为毫微微小区和毫微微小区附近的宏小区基站的邻居的家庭NodeB接收下行链路传输。 评估下行链路传输以识别每个具有高于预定检测阈值的导频能量的检测下行链路码的第一组。 选择与用于毫微微小区的服务用户设备结合使用的最佳下行链路码。 最佳下行链路码基于第一组检测到的下行链路码，并从为毫微微小区保留的一组下行链路码中选择下行链路码。 最佳下行链路码可以是具有最小检测能量的可用下行链路码或来自可用下行链路码的随机选择的下行链路码。

    Adaptation of transmit power based on maximum received signal strength
    34.
    发明授权
    Adaptation of transmit power based on maximum received signal strength 有权
    基于最大接收信号强度适配发射功率

    公开(公告)号：US08700083B2

    公开(公告)日：2014-04-15

    申请号：US12187307

    申请日：2008-08-06

    申请人： Mehmet Yavuz ,  Peter J. Black ,  Sanjiv Nanda

    发明人： Mehmet Yavuz ,  Peter J. Black ,  Sanjiv Nanda

    IPC分类号： H04B7/00

    CPC分类号： H04W52/40 ,  H04W16/16 ,  H04W36/04 ,  H04W52/143 ,  H04W52/244 ,  H04W52/245 ,  H04W52/367

    摘要： Transmit power (e.g., maximum transmit power) may be defined based on the maximum received signal strength allowed by a receiver and a minimum coupling loss from a transmitting node to a receiver. Transmit power may be defined for an access node (e.g., a femto node) such that a corresponding outage created in a cell (e.g., a macro cell) is limited while still providing an acceptable level of coverage for access terminals associated with the access node. An access node may autonomously adjust its transmit power based on channel measurement and a defined coverage hole to mitigate interference. Transmit power may be defined based on channel quality. Transmit power may be defined based on a signal-to-noise ratio at an access terminal. The transmit power of neighboring access nodes also may be controlled by inter-access node signaling.

    摘要翻译： 可以基于接收机允许的最大接收信号强度和从发射节点到接收机的最小耦合损耗来定义发射功率（例如，最大发射功率）。 可以为接入节点（例如，毫微微节点）定义发射功率，使得在小区（例如，宏小区）中创建的相应中断受到限制，同时仍然为与接入节点相关联的接入终端提供可接受的覆盖水平 。 接入节点可以基于信道测量和定义的覆盖孔来自主地调整其发射功率以减轻干扰。 发射功率可以基于信道质量来定义。 可以基于接入终端的信噪比来定义发射功率。 相邻接入节点的发射功率也可以由接入间节点信令来控制。

    WIRELESS COMMUNICATION SYSTEMS WITH FEMTO CELLS
    36.
    发明申请
    WIRELESS COMMUNICATION SYSTEMS WITH FEMTO CELLS 有权
    无线通信系统与FEMTO电池

    公开(公告)号：US20100015921A1

    公开(公告)日：2010-01-21

    申请号：US12502084

    申请日：2009-07-13

    申请人： Mehmet Yavuz ,  Sanjiv Nanda ,  Vansh Pal Singh Makh

    发明人： Mehmet Yavuz ,  Sanjiv Nanda ,  Vansh Pal Singh Makh

    IPC分类号： H04B15/00

    CPC分类号： H04W72/085 ,  H04W72/0406 ,  H04W84/045

    摘要： Systems and methods for avoiding interference signals sent by a femto node in a wireless communication system are described herein. In one embodiment, the method comprises establishing a communication link between a first transceiver and a base station. The base station is configured to provide wireless communication coverage within a first area. The method further comprises detecting by the first transceiver a femto signal generated by the femto node. The femto node is configured to provide wireless communication coverage within a second area to at least a second transceiver. The second transceiver is different from the first transceiver. The second area is smaller than the first area. The method further comprises identifying information indicative of a signal strength of the femto signal. The method further comprises transmitting a first message in response to detecting the femto signal, the first message comprising information identifying the femto node and the information indicative of the signal strength of the femto signal to the base station over a first frequency carrier. The method further comprises receiving a second message from the base station. The second message comprises information indicative of an instruction to communicate over a second carrier frequency. The method further comprises communicating with the base station over a second frequency carrier in response to the second message.

    摘要翻译： 本文描述了用于避免毫微微节点在无线通信系统中发送的干扰信号的系统和方法。 在一个实施例中，该方法包括在第一收发器和基站之间建立通信链路。 基站被配置为在第一区域内提供无线通信覆盖。 该方法还包括由第一收发机检测由毫微微节点产生的毫微微信号。 毫微微节点被配置为在至少第二收发器的第二区域内提供无线通信覆盖。 第二收发器与第一收发器不同。 第二个区域小于第一个区域。 该方法还包括识别指示毫微微信号的信号强度的信息。 所述方法还包括响应于检测到所述毫微微信号而发送第一消息，所述第一消息包括识别所述毫微微节点的信息和指示所述毫微微信号的信号在所述基站上的信号在第一频率载波上的信息。 该方法还包括从基站接收第二消息。 第二消息包括指示通过第二载波频率进行通信的指示的信息。 该方法还包括响应于第二消息通过第二频率载波与基站进行通信。

    Generating access point beacons at different power levels
    39.
    发明授权
    Generating access point beacons at different power levels 有权
    在不同的功率级别生成接入点信标

    公开(公告)号：US09119164B2

    公开(公告)日：2015-08-25

    申请号：US12542294

    申请日：2009-08-17

    申请人： Mehmet Yavuz ,  Sanjiv Nanda ,  Manoj M. Deshpande ,  Chirag S. Patel

    发明人： Mehmet Yavuz ,  Sanjiv Nanda ,  Manoj M. Deshpande ,  Chirag S. Patel

    IPC分类号： H04W4/00 ,  H04W52/32 ,  H04W52/24 ,  H04W52/28 ,  H04W84/04

    CPC分类号： H04W52/325 ,  H04W52/244 ,  H04W52/245 ,  H04W52/28 ,  H04W84/045

    摘要： An access point generates beacons at different power levels at different times to provide an acceptable tradeoff between coverage area associated with the beacons and outage experienced at nearby access terminals. For example, a femto access point may transmit beacons at a relatively low power for a relatively long period of time to reduce interference at nearby access terminals that are being served by a macro access point. The femto access point may then transmit beacons at a relatively high power for a relatively short period of time to enable nearby access terminals to receive the beacons. Also, a given transmit chain may be used to provide frequency hopping of high and low power beacons.

    摘要翻译： 接入点在不同时间产生不同功率电平的信标，以提供与信标相关联的覆盖区域和在附近接入终端处经历的中断之间的可接受的折中。 例如，毫微微接入点可以以相对较低的功率在相对长的时间段内发送信标，以减少正在由宏接入点服务的附近接入终端的干扰。 毫微微接入点然后可以在相对较短的时间段内以相对高的功率发送信标，以使附近的接入终端能够接收信标。 此外，给定的发射链可以用于提供高和低功率信标的跳频。

    Interference management utilizing HARQ interlaces
    40.
    发明授权
    Interference management utilizing HARQ interlaces 有权
    利用HARQ交织的干扰管理

    公开(公告)号：US09078269B2

    公开(公告)日：2015-07-07

    申请号：US12212622

    申请日：2008-09-17

    申请人： Mehmet Yavuz ,  Sanjiv Nanda ,  Peter J. Black ,  Bibhu Mohanty

    发明人： Mehmet Yavuz ,  Sanjiv Nanda ,  Peter J. Black ,  Bibhu Mohanty

    IPC分类号： H04W4/00 ,  H04W72/08 ,  H04W52/24 ,  H04W48/08 ,  H04W72/04

    CPC分类号： H04W72/082 ,  H04W48/08 ,  H04W52/244 ,  H04W72/0406

    摘要： Interference that occurs during wireless communication may be managed through the use of fractional reuse and other techniques. In some aspects fractional reuse may relate to HARQ interlaces, portions of a timeslot, frequency spectrum, and spreading codes. Interference may be managed through the use of a transmit power profile and/or an attenuation profile. Interference also may be managed through the use of power management-related techniques.

    摘要翻译： 可以通过使用分数重用和其他技术来管理在无线通信期间发生的干扰。 在某些方面，分数重用可涉及HARQ交错，时隙的一部分，频谱和扩展码。 可以通过使用发射功率分布和/或衰减分布来管理干扰。 干扰也可以通过使用与电源管理相关的技术进行管理。