Forward link data rate control and rate indication for satellite-enabled communications systems
    72.
    发明授权
    Forward link data rate control and rate indication for satellite-enabled communications systems 有权
    用于卫星通信系统的前向链路数据速率控制和速率指示

    公开(公告)号:US08699465B2

    公开(公告)日:2014-04-15

    申请号:US12627974

    申请日:2009-11-30

    IPC分类号: H04W36/30 H04W84/08 H04W74/04

    摘要: In a synchronous application to control forward link (FL) data rates in a satellite system, user equipment (UE) repeatedly transmits a quality control measurement (QCM) index during a QCM period. During this QCM period, the data rate cannot change. The associated satellite transmits at a new rate corresponding to the QCM index. The UE knows that it will begin receiving new data at the new rate after a QCM delay. In an asynchronous application, a satellite transmits a rate change signal over a FL rate indication channel (RICH). A UE monitors the FL RICH for this signal. When the signal quality is to be low, the satellite sends only a single bit of the QCM index over a first orthogonal channel. When the signal quality is not low, the satellite transmits each bit of the QCM index in a separate orthogonal channel of the FL RICH.

    摘要翻译: 在用于在卫星系统中控制前向链路(FL)数据速率的同步应用中,用户设备(UE)在QCM周期期间重复发送质量控制测量(QCM)索引。 在这个QCM期间,数据速率不能改变。 相关联的卫星以对应于QCM指数的新速率发射。 UE知道在QCM延迟之后,它将以新的速率开始接收新的数据。 在异步应用中,卫星通过FL速率指示信道(RICH)发送速率改变信号。 UE监视该信号的FL RICH。 当信号质量低时,卫星在第一个正交信道上只发送一个QCM索引的比特。 当信号质量不低时,卫星在FL RICH的单独的正交信道中发送QCM索引的每个比特。

    Timing circuit calibration in devices with selectable power modes
    73.
    发明授权
    Timing circuit calibration in devices with selectable power modes 有权
    具有可选功率模式的器件中的定时电路校准

    公开(公告)号:US08649755B2

    公开(公告)日:2014-02-11

    申请号:US13329174

    申请日:2011-12-16

    IPC分类号: H04B1/16

    摘要: Techniques are provided which may be implemented in various methods, apparatuses, and/or articles of manufacture for use by a device that is operable in a plurality of modes, including “higher power mode” and a “lower power mode”. A timing circuit may be set based, at least in part, on a phase value obtained from a signal from a ground-based transmitter, and operation of the device may be selectively transitioned to a lower power mode wherein the device uses the timing circuit. In certain example implementations, operation of the device to the lower power mode may be selectively transition and based, at least in part, on a determination that one or more attribute values satisfy a profile test indicating that the electronic device is likely to be within a characterized environment, and/or a determination that the electronic device is likely to be in a constrained motion state.

    摘要翻译: 提供了可以以包括“较高功率模式”和“较低功率模式”在多种模式中可操作的装置使用的各种方法,装置和/或制品的实施方式。 可以至少部分地基于从基于地面的发射机的信号获得的相位值来设置定时电路,并且可以选择性地将设备的操作转换到其中设备使用定时电路的较低功率模式。 在某些示例实现中,设备到较低功率模式的操作可以选择性地转换并且至少部分地基于确定一个或多个属性值满足表示电子设备可能在 和/或确定电子设备可能处于受限运动状态。

    Polarization reuse and beam-forming techniques for aeronautical broadband systems
    74.
    发明授权
    Polarization reuse and beam-forming techniques for aeronautical broadband systems 有权
    航空宽带系统的极化重用和波束形成技术

    公开(公告)号:US08417181B2

    公开(公告)日:2013-04-09

    申请号:US12817883

    申请日:2010-06-17

    申请人: Ahmad Jalali

    发明人: Ahmad Jalali

    IPC分类号: H04B7/15

    CPC分类号: H04B7/18504

    摘要: Aeronautical broadband communication is enhanced by providing an apparatus having a first antenna configured to communicate using a signal orientation corresponding to a first polarization, and a second antenna configured to communicate using a signal orientation corresponding to a second polarization, where the second polarization has at least one characteristic difference from the first polarization. Additional antennas may be used, where multiple antennas share one polarization, and multiple other antennas share a different polarization, and signals from like-polarized antennas are combined for beam-formation.

    摘要翻译: 通过提供具有第一天线的装置来增强航空宽带通信,所述第一天线被配置为使用与第一极化相对应的信号方向进行通信,以及第二天线,被配置为使用与第二极化对应的信号取向进行通信,其中第二极化具有至少 与第一极化有一个特征差异。 可以使用附加的天线,其中多个天线共享一个极化,并且多个其它天线共享不同的极化,并且组合来自相同极化天线的信号用于波束形成。

    HYBRID SATELLITE AND MESH NETWORK SYSTEM FOR AIRCRAFT AND SHIP INTERNET SERVICE
    75.
    发明申请
    HYBRID SATELLITE AND MESH NETWORK SYSTEM FOR AIRCRAFT AND SHIP INTERNET SERVICE 有权
    用于飞机和船舶互联网服务的混合卫星和网络系统

    公开(公告)号:US20110286325A1

    公开(公告)日:2011-11-24

    申请号:US13109302

    申请日:2011-05-17

    IPC分类号: G06F11/00

    摘要: A hybrid satellite-mesh network including a ground segment, a mobile segment and a satellite segment provides high bandwidth communication between mobile platforms and the Internet. The satellite segment is used only when mesh network communication links between mobile segment nodes and ground segment nodes are unavailable. Mobile segment nodes can function in either an access terminal mode or an access point mode to communicate with other mobile segment nodes according to a routing algorithm in a mesh portion of the network. Mobile segment nodes employ adaptive frequency reuse, link level date rate adaptation, link level power control and adaptive beam forming antennas.

    摘要翻译: 包括地面段,移动段和卫星段的混合卫星网状网络在移动平台和因特网之间提供高带宽通信。 仅当移动节点节点和地面节点节点之间的网状网络通信链路不可用时才使用卫星节点。 移动节点节点可以在接入终端模式或接入点模式下工作,以根据网络的网状部分中的路由算法与其他移动节点节点进行通信。 移动节点节点采用自适应频率重用,链路级日期速率适配,链路级功率控制和自适应波束形成天线。

    FORWARD LINK DATA RATE CONTROL AND RATE INDICATION FOR SATELLITE-ENABLED COMMUNICATIONS SYSTEMS
    76.
    发明申请
    FORWARD LINK DATA RATE CONTROL AND RATE INDICATION FOR SATELLITE-ENABLED COMMUNICATIONS SYSTEMS 有权
    用于卫星通信系统的前向链路数据速率控制和速率指示

    公开(公告)号:US20110128867A1

    公开(公告)日:2011-06-02

    申请号:US12627974

    申请日:2009-11-30

    IPC分类号: H04L12/26 H04B7/14

    摘要: In a synchronous application to control forward link (FL) data rates in a satellite system, user equipment (UE) repeatedly transmits a quality control measurement (QCM) index during a QCM period. During this QCM period, the data rate cannot change. The associated satellite transmits at a new rate corresponding to the QCM index. The UE knows that it will begin receiving new data at the new rate after a QCM delay. In an asynchronous application, a satellite transmits a rate change signal over a FL rate indication channel (RICH). A UE monitors the FL RICH for this signal. When the signal quality is to be low, the satellite sends only a single bit of the QCM index over a first orthogonal channel. When the signal quality is not low, the satellite transmits each bit of the QCM index in a separate orthogonal channel of the FL RICH.

    摘要翻译: 在用于在卫星系统中控制前向链路(FL)数据速率的同步应用中,用户设备(UE)在QCM周期期间重复发送质量控制测量(QCM)索引。 在这个QCM期间,数据速率不能改变。 相关联的卫星以对应于QCM指数的新速率发射。 UE知道在QCM延迟之后,它将以新的速率开始接收新的数据。 在异步应用中,卫星通过FL速率指示信道(RICH)发送速率改变信号。 UE监视该信号的FL RICH。 当信号质量低时,卫星在第一个正交信道上只发送一个QCM索引的比特。 当信号质量不低时,卫星在FL RICH的单独的正交信道中发送QCM索引的每个比特。

    Multiplexing of real time services and non-real time services for OFDM systems
    77.
    发明授权
    Multiplexing of real time services and non-real time services for OFDM systems 有权
    OFDM系统的实时业务和非实时业务的多路复用

    公开(公告)号:US07751492B2

    公开(公告)日:2010-07-06

    申请号:US11165451

    申请日:2005-06-23

    IPC分类号: H04B7/02

    CPC分类号: H04L5/023

    摘要: For certain embodiments of this application, a method and apparatus for generating pilots in a wireless multiple-input multiple output (MIMO) communication system is disclosed. The certain embodiments can include obtaining at least one pilot symbol for each antenna of a plurality of antennas, obtaining an orthogonal sequence for each antenna in the plurality of antennas, and covering the at least one pilot symbol for each antenna with the orthogonal sequence to obtain a sequence of covered pilot symbols for each antenna to obtain at least one covered pilot symbols for each of the plurality of antennas.

    摘要翻译: 对于本申请的某些实施例,公开了一种用于在无线多输入多输出(MIMO)通信系统中生成导频的方法和装置。 某些实施例可以包括为多个天线中的每个天线获得至少一个导频符号,为多个天线中的每个天线获得正交序列,并用正交序列覆盖每个天线的至少一个导频符号,以获得 用于每个天线的覆盖导频符号的序列,以获得用于所述多个天线中的每一个的至少一个被覆盖的导频符号。

    MULTIPLEXING OF REAL TIME SERVICES AND NON-REAL TIME SERVICES FOR OFDM SYSTEMS
    78.
    发明申请
    MULTIPLEXING OF REAL TIME SERVICES AND NON-REAL TIME SERVICES FOR OFDM SYSTEMS 有权
    实时服务的多路复用和OFDM系统的非实时时间服务

    公开(公告)号:US20100142638A1

    公开(公告)日:2010-06-10

    申请号:US12704111

    申请日:2010-02-11

    IPC分类号: H04L27/28

    CPC分类号: H04L5/023

    摘要: Transmitter and receiver units for use in an OFDM communications system and configurable to support multiple types of services. The transmitter unit includes one or more encoders, a symbol mapping element, and a modulator. Each encoder receives and codes a respective channel data stream to generate a corresponding coded data stream. The symbol mapping element receives and maps data from the coded data streams to generate modulation symbol vectors, with each modulation symbol vector including a set of data values used to modulate a set of tones to generate an OFDM symbol. The modulator modulates the modulation symbol vectors to provide a modulated signal suitable for transmission. The data from each coded data stream is mapped to a respective set of one or more “circuits”. Each circuit can be defined to include a number of tones from a number of OFDM symbols, a number of tones from a single OFDM symbol, all tones from one or more OFDM symbols, or some other combination of tones. The circuits can have equal size or different sizes. Different circuits can be used for full rate data (e.g., active speech) and low rate data (e.g., silence periods).

    摘要翻译: 发射机和接收机单元,用于OFDM通信系统并可配置为支持多种类型的业务。 发射机单元包括一个或多个编码器,符号映射元件和调制器。 每个编码器接收和编码相应的信道数据流以生成对应的编码数据流。 符号映射元件接收并映射来自编码数据流的数据以产生调制符号向量,其中每个调制符号向量包括用于调制一组音调以生成OFDM符号的一组数据值。 调制器调制调制符号向量以提供适于传输的调制信号。 来自每个编码数据流的数据被映射到一个或多个“电路”的相应集合。 每个电路可以被定义为包括来自多个OFDM符号的多个音调,来自单个OFDM符号的多个音调,来自一个或多个OFDM符号的所有音调,或一些其它音调组合。 电路可以具有相同的尺寸或不同的尺寸。 不同的电路可以用于全速率数据(例如,活动语音)和低速率数据(例如,静默时段)。

    Orthogonal code division multiple access on return link of satellite links
    79.
    发明授权
    Orthogonal code division multiple access on return link of satellite links 有权
    卫星链路返回链路上的正交码分多址

    公开(公告)号:US07633895B2

    公开(公告)日:2009-12-15

    申请号:US10428953

    申请日:2003-05-01

    IPC分类号: H04B7/212

    摘要: Orthogonal CDMA (OCDMA) in the return link of a satellite based communications system provides improved bandwidth efficiencies; increased ability to overcome channel degrading phenomenon; reduced transmission power; or various combinations thereof. By achieving code synchronization needed for advantageous use of OCDMA in the return link of a satellite based communication system, a plurality of terminals, each with a unique time slot/code channel assignment, may transmit concurrently, with the same, or lower, aggregate power as would be used by a single terminal using TDMA. Use of OCDMA in the return link allows one or more terminals, each in a common beam and assigned a common time slot, to transmit at a higher transmission power to overcome channel degradation effects. The ability to allow for higher transmission power for a particular terminal can increase the effective data rate for that terminal by enabling the use of a higher order modulation technique.

    摘要翻译: 基于卫星通信系统的返回链路中的正交CDMA(OCDMA)提供了改进的带宽效率; 增强克服渠道退化现象的能力; 降低发射功率; 或其各种组合。 通过实现在基于卫星的通信系统的返回链路中有利地使用OCDMA所需的代码同步,每个具有唯一的时隙/码信道分配的终端可以以相同或更低的总功率同时发送 如将由使用TDMA的单个终端使用的那样。 在返回链路中使用OCDMA允许一个或多个终端,每个在公共波束中并且分配公共时隙,以更高的发射功率发射以克服信道劣化效应。 允许特定终端的较高发射功率的能力可以通过使用更高阶调制技术来增加该终端的有效数据速率。

    Method and apparatus for transmitting data in a time division duplexed (TDD) communication system
    80.
    发明授权
    Method and apparatus for transmitting data in a time division duplexed (TDD) communication system 有权
    用于在时分双工(TDD)通信系统中发送数据的方法和装置

    公开(公告)号:US07333560B2

    公开(公告)日:2008-02-19

    申请号:US11328807

    申请日:2006-01-09

    IPC分类号: H04K1/02

    摘要: Techniques to process data for transmission in a time division duplexed (TDD) communication system. In one aspect, the frequency response of a forward link is estimated at a base station based on reverse link transmissions (e.g., pilots) from a terminal. Prior to a data transmission on the forward link, the base station determines a reverse transfer function based on the pilots transmitted by the terminal, “calibrates” the reverse transfer function with a calibration function to derive an estimate of a forward transfer function, and preconditions modulation symbols based on weights derived from the forward transfer function. In another aspect, the terminal estimates the “quality” of the forward link and provides this information to the base station. The base station then uses the information to properly code and modulate data prior to transmission such that the transmitted data can be received by the terminal at the desired level of performance.

    摘要翻译: 在时分双工(TDD)通信系统中处理用于传输的数据的技术。 在一个方面,基于来自终端的反向链路传输(例如,导频)在基站处估计前向链路的频率响应。 在前向链路上的数据传输之前,基站基于终端发送的导频来确定反向传递函数,使用校准函数“校准”反向传递函数,以导出前向传递函数的估计,以及前提条件 基于从前向传递函数导出的权重的调制符号。 在另一方面,终端估计前向链路的“质量”,并将该信息提供给基站。 然后,基站使用该信息在发送之前对数据进行适当的编码和调制,使得所发送的数据能够以期望的性能水平由终端接收。