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    Methods and apparatus for providing base station position information and using position information to support timing and/or frequency corrections
    3.
    发明授权
    Methods and apparatus for providing base station position information and using position information to support timing and/or frequency corrections 有权
    用于提供基站位置信息和使用位置信息以支持定时和/或频率校正的方法和装置

    公开(公告)号：US08798638B2

    公开(公告)日：2014-08-05

    申请号：US11216973

    申请日：2005-08-31

    申请人： Frank A. Lane ,  Rajiv Laroia ,  Junyi Li

    发明人： Frank A. Lane ,  Rajiv Laroia ,  Junyi Li

    IPC分类号： H04W24/00

    CPC分类号： H04W4/02 ,  H04B7/01 ,  H04W56/0025 ,  H04W56/0035 ,  H04W56/006 ,  H04W64/00 ,  H04W88/005 ,  H04W92/10

    摘要： A wireless terminal receives base station position over an airlink, determines its relative position with respect to the base station and determines a timing adjustment correction. The wireless terminal applies the determined timing correction to control uplink signaling timing and achieve synchronization at the base station's receiver. The wireless terminal determines its relative velocity with respect to the base station and determines a Doppler shift adjustment which it adds to the uplink carrier frequency or to its baseband signal. A wireless terminal determines the position of a moving base station and determines timing and/or frequency corrections. Base station position is determined from the current time and stored information correlating the base station position with time, e.g., for a geo-synchronous satellite. Base station position information is determined from broadcast information, e.g., GPS base station position, for an aircraft base station. Wireless terminals may be mobile and include a GPS receiver for WIRELESS TERMINAL position determination.

    摘要翻译： 无线终端通过空中链路接收基站位置，确定其相对于基站的相对位置，并确定定时调整校正。 无线终端应用所确定的定时校正以控制上行链路信令定时，并在基站的接收机处实现同步。 无线终端确定其相对于基站的相对速度，并确定其添加到上行链路载波频率或其基带信号的多普勒频移调整。 无线终端确定移动基站的位置并确定定时和/或频率校正。 基站位置是从当前时间确定的，并存储与基站位置和时间相关的信息，例如用于地理同步卫星。 从飞机基站的广播信息（例如，GPS基站位置）确定基站位置信息。 无线终端可以是移动的，并且包括用于WIRELESS TERMINAL位置确定的GPS接收器。

    Methods and apparatus for antenna control in a wireless terminal
    5.
    发明授权
    Methods and apparatus for antenna control in a wireless terminal 有权
    无线终端天线控制方法及装置

    公开(公告)号：US07826807B2

    公开(公告)日：2010-11-02

    申请号：US11249775

    申请日：2005-10-13

    申请人： Rajiv Laroia ,  Junyi Li ,  Frank A. Lane

    发明人： Rajiv Laroia ,  Junyi Li ,  Frank A. Lane

    IPC分类号： H04B1/66

    CPC分类号： H04B7/088 ,  H04B7/0811 ,  H04B7/0848

    摘要： Base stations transmit strip signals using strip signal segments and self supporting modulation scheme techniques facilitating rapid channel estimate. A strip segment occupies one OFDM symbol time interval and uses a set of downlink tones; some, e.g., half, of the tones are left unused facilitating SIR measurement. The strip segments are advantageously timed to correspond to uplink access intervals in which connected wireless terminals do not typically transmit uplink signals. Connected wireless terminals including: multiple antennas used in combination, an antenna duplex module, single RF receiver chain and single RF transmitter chain, switch antenna coefficient combinations based on strip signal segment timing. The wireless terminal determines an independent downlink channel quality measurement, e.g., SNR and/or SIR for each strip signal segment and for on-going non-strip signaling. The wireless terminal compares channel quality measurements and selects an antenna coefficient combination to be used during non-strip signaling intervals obtaining very good antenna gain.

    摘要翻译： 基站使用带状信号段和自支持调制方案技术来传输带状信号，这有助于快速信道估计。 条带占用一个OFDM符号时间间隔并使用一组下行链路音调; 一些，例如一半的音调被置于未使用状态，便于SIR测量。 带状段有利地被定时以对应于其中连接的无线终端通常不发送上行链路信号的上行链路接入间隔。 连接的无线终端包括：组合使用多个天线，天线双工模块，单个射频接收机链和单个射频发射机链，基于条带信号段定时的开关天线系数组合。 无线终端确定独立的下行链路信道质量测量，例如每个条带信号段的SNR和/或SIR，以及用于正在进行的非条带信令。 无线终端比较信道质量测量并选择在非剥离信令间隔期间使用的天线系数组合，从而获得非常好的天线增益。

    Methods and apparatus of providing transmit and/or receive diversity with multiple antennas in wireless communication systems
    6.
    发明授权
    Methods and apparatus of providing transmit and/or receive diversity with multiple antennas in wireless communication systems 有权
    在无线通信系统中提供与多个天线的发射和/或接收分集的方法和装置

    公开(公告)号：US07610024B2

    公开(公告)日：2009-10-27

    申请号：US11284285

    申请日：2005-11-21

    申请人： Rajiv Laroia ,  Junyi Li ,  Sundeep Rangan ,  Murari Srinivasan ,  Frank A. Lane ,  Prashanth Hande

    发明人： Rajiv Laroia ,  Junyi Li ,  Sundeep Rangan ,  Murari Srinivasan ,  Frank A. Lane ,  Prashanth Hande

    IPC分类号： H04B7/06

    CPC分类号： H04B7/0604 ,  H01Q3/24 ,  H01Q3/2605 ,  H04B7/061 ,  H04B7/0691 ,  H04B7/0805 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0026 ,  H04L5/006 ,  H04W52/42

    摘要： Transmit and/or receive diversity is achieved using multiple antennas. In some embodiments, a single transmitter chain within a wireless terminal is coupled over time to a plurality of transmit antennas. At any given time, a controllable switching module couples the single transmitter chain to one the plurality of transmit antennas. Over time, the switching module couples the output signals from the single transmitter chain to different transmit antennas. Switching decisions are based upon predetermined information, dwell information, and/or channel condition feedback information. Switching is performed on some dwell and/or channel estimation boundaries. In some OFDM embodiments, each of multiple transmitter chains is coupled respectively to a different transmit antenna. Information to be transmitted is mapped to a plurality of tones. Different subsets of tones are formed for and transmitted through different transmit chain/antenna sets simultaneously. The balance of tones allocated to the subsets for each antenna are changed as a function of predetermined information, dwell information, and/or channel condition feedback information.

    摘要翻译： 使用多个天线实现发射和/或接收分集。 在一些实施例中，无线终端内的单个发射机链随时间耦合到多个发射天线。 在任何给定时间，可控开关模块将单个发射机链耦合到多个发射天线中的一个。 随着时间的推移，开关模块将来自单个发射机链的输出信号耦合到不同的发射天线。 切换决定基于预定信息，停留信息和/或信道条件反馈信息。 在一些驻留和/或信道估计边界上执行切换。 在一些OFDM实施例中，多个发射机链中的每一个分别耦合到不同的发射天线。 要发送的信息被映射到多个音调。 为不同的发射链/天线组同时形成和发送不同的音调子集。 分配给每个天线的子集的音调的平衡作为预定信息，停留信息和/或信道条件反馈信息的函数而改变。

    Multiple access wireless communications system using a multisector configuration
    7.
    发明授权
    Multiple access wireless communications system using a multisector configuration 失效
    多址无线通信系统使用多节点配置

    公开(公告)号：US07388845B2

    公开(公告)日：2008-06-17

    申请号：US10640861

    申请日：2003-08-13

    申请人： Rajiv Laroia ,  Frank A. Lane ,  Junyi Li

    发明人： Rajiv Laroia ,  Frank A. Lane ,  Junyi Li

    IPC分类号： H04B7/212 ,  G08C17/00

    CPC分类号： H04W52/34 ,  H04B7/12 ,  H04L27/2662 ,  H04W52/343 ,  H04W52/42

    摘要： Power control methods and apparatus for use in a sectorized cell of an OFDM communications system are described. Each sector of a cell uses the same frequencies and transmission times and is synchronized with the other sectors in the cell in terms of tone frequencies used at any given time and symbol transmission times. Tones are allocated to channels in each cell in the same manner so that each channel in a sector has a corresponding channel in another sector. Power differences between channels in different sectors are maintained to be within a pre-selected power difference. Different channels in a cell are assigned different power levels. Wireless terminals are assigned to channels based on channel feedback information. Wireless terminals with poor channel conditions are allocated to higher power channels than wireless terminals with good channel conditions. Lower power channels often include more tones per symbol time than high power channels.

    摘要翻译： 描述了在OFDM通信系统的扇区化小区中使用的功率控制方法和装置。 单元的每个扇区使用相同的频率和传输时间，并且根据在任何给定时间和符号传输时间使用的音调频率与小区中的其他扇区同步。 以相同的方式将音调分配给每个小区中的信道，使得扇区中的每个信道在另一个扇区中具有相应的信道。 不同扇区中的信道之间的功率差被维持在预先选择的功率差之内。 单元中的不同通道被分配不同的功率电平。 基于信道反馈信息将无线终端分配给信道。 具有较差信道条件的无线终端分配给具有良好信道条件的无线终端的较高功率信道。 低功率通道通常每个符号时间包括比高功率通道更多的音调。

    Enhanced beacon signaling method and apparatus
    8.
    发明授权
    Enhanced beacon signaling method and apparatus 失效
    增强型信标信号的方法和装置

    公开(公告)号：US07379446B2

    公开(公告)日：2008-05-27

    申请号：US10965011

    申请日：2004-10-14

    申请人： Rajiv Laroia ,  Frank A. Lane ,  Junyi Li

    发明人： Rajiv Laroia ,  Frank A. Lane ,  Junyi Li

    IPC分类号： H04J3/00 ,  H04J4/00 ,  H04B7/00

    CPC分类号： H04L5/0044 ,  H04L5/0048 ,  H04L5/0053

    摘要： Methods and apparatus for using high power narrow signals, e.g., tones, for communicating transmitter information without putting the full transmission power available into the transmitted tone or tones are described. User data is transmitted in parallel with transmitter information in many embodiments with the user data being allocated more than 20% of the transmitter's maximum output power in many cases. By using an amount of power on the tones used to communicate transmitter information while simultaneously transmitting user data with more than 20% of the available transmission power, efficient bandwidth utilization is achieved while still ensuring a high probability that that the transmitter information signals will be received and detectable using simple energy detection techniques and without the need for timing synchronization with the transmitter to be achieved for success interpretation of the transmitter information.

    摘要翻译： 描述了使用高功率窄信号（例如音调）用于传送发射机信息而不将全部传输功率可用的传输音调或音调的方法和装置。 在许多实施例中，用户数据与发射机信息并行传输，在许多情况下用户数据被分配超过发射机最大输出功率的20％。 通过对用于传送发射机信息的音调使用一定的功率，同时以超过20％的可用传输功率发送用户数据，实现有效的带宽利用，同时仍然确保发送器信息信号将被接收的高概率， 可以使用简单的能量检测技术进行检测，并且不需要与发射机的定时同步来实现发射机信息的成功解释。

    Beacon signaling in a wireless system
    9.
    发明授权
    Beacon signaling in a wireless system 失效
    信标信号在无线系统中

    公开(公告)号：US07366200B2

    公开(公告)日：2008-04-29

    申请号：US10642096

    申请日：2003-08-14

    申请人： Rajiv Laroia ,  Frank A. Lane ,  Junyi Li

    发明人： Rajiv Laroia ,  Frank A. Lane ,  Junyi Li

    IPC分类号： H04J4/00

    CPC分类号： H04W52/34 ,  H04B7/12 ,  H04L27/2662 ,  H04W52/42

    摘要： A few high power tones used for synchronization and/or other purposes are transmitted in a FDM system during a period of time into a region, e.g., sector of a cell, e.g., a symbol transmission time period. During normal data transmission symbol periods signals are transmitted using at least 10 tones, e.g., per symbol time. Less than 5 high power signals are transmitted in a symbol time with at least 80% the maximum total transmitter power used for transmitting into said region being allocated to the high power signals where the maximum total transmitter power is determined from a period of time which may includes one or more data and/or high power tone transmission periods. When the high power tones are transmitted at most 20% of transmitter power used for transmitting into the region is available for transmitting other tones with the power normally being distributed among multiple tones. Often some tones which would be transmitted in a symbol time go unused during transmission of the high power signals.

    摘要翻译： 用于同步和/或其他目的的一些高功率音调在FDM系统中在一段时间内被传送到区域，例如小区的扇区，例如符号传输时间段。 在正常数据传输期间，使用至少10个音调，例如每个符号时间发送信号。 少于5个高功率信号以符号时间传输，其中至少80％用于发送到所述区域的最大总发射机功率被分配给高功率信号，其中最大总发射机功率是从一段时间确定的 包括一个或多个数据和/或高功率音调传输周期。 当用于发送到该区域的发射机功率的最多20％发送高功率音调可用于发送其他音调时，功率通常在多个音调之间分配。 通常，在传输高功率信号期间，将以符号时间传输的一些音调将不被使用。

    Base station based methods and apparatus for supporting break before make handoffs in a multi-carrier system
    10.
    发明授权
    Base station based methods and apparatus for supporting break before make handoffs in a multi-carrier system 有权
    在多载波系统中进行切换之前，用于支持断点的基站的方法和装置

    公开(公告)号：US07047009B2

    公开(公告)日：2006-05-16

    申请号：US10964945

    申请日：2004-10-14

    申请人： Rajiv Laroia ,  Junyi Li ,  Frank A. Lane

    发明人： Rajiv Laroia ,  Junyi Li ,  Frank A. Lane

    IPC分类号： H04Q7/20 ,  H04Q7/00

    CPC分类号： H04W36/18 ,  H04W36/06

    摘要： A mobile communications device initiates a handoff from its current base station (BS) sector network attachment point to a new BS sector. The mobile sends a handoff request over its current wireless link to the current BS sector, which forwards the request to the new BS sector, e.g., via a network link. The new BS sector processes the request assigning dedicated resources, e.g., an identifier and dedicated uplink segments. Information identifying the allocated resources is conveyed from the new BS sector via the current BS sector to the mobile. The mobile determines the time of the allocated dedicated segments based upon a received beacon signal from the new BS sector with known timing relationships to dedicated segments. The mobile breaks the original wireless link just prior to the time of the first assigned dedicated segment. The mobile communicates information on the assigned dedicated segments to perform registration operations, e.g., timing synchronization and power control, establishing a new wireless link.

    摘要翻译： 移动通信设备发起从其当前基站（BS）扇区网络连接点到新的BS扇区的切换。 移动台通过其当前的无线链路向当前BS扇区发送切换请求，该BS扇区将该请求转发到新的BS扇区，例如经由网络链路。 新BS部门处理分配专用资源的请求，例如标识符和专用上行链路段。 识别分配的资源的信息从新的BS扇区通过当前BS扇区传送到移动台。 移动台基于来自新BS扇区的接收到的信标信号确定所分配的专用段的时间，具有与专用段的已知定时关系。 移动台在第一个分配的专用段之前就打破原始的无线链路。 移动台在分配的专用段上传送信息以执行注册操作，例如定时同步和功率控制，建立新的无线链路。