METHODS AND APPARATUS FOR COMMUNICATING TRANSMITTER INFORMATION IN A COMMUNICATION NETWORK
    22.
    发明申请
    METHODS AND APPARATUS FOR COMMUNICATING TRANSMITTER INFORMATION IN A COMMUNICATION NETWORK 审中-公开
    用于在通信网络中传送发送器信息的方法和装置

    公开(公告)号:US20090274099A1

    公开(公告)日:2009-11-05

    申请号:US12433845

    申请日:2009-04-30

    IPC分类号: H04W8/00

    摘要: Methods and apparatus for communicating transmitter information in a communication network are disclosed. The methods and apparatus communicate transmitter specific information, in particular, which includes location information about network transmitters for use in location or positioning type services. The disclosed methods and apparatus include inserting such transmitter specific information within either a data flow of at least one transmission frame or a control channel in the at least one transmission frame. In addition, a transmitter identifier is encoded in a positioning pilot channel (PPC) within the at least one transmission frame, and the configured transmission frame transmitted to a user device. The user device may use the transmitter specific information of numerous transmitters along with the transmitter identifiers to measure how far it is from the transmitters, and then triangulate to determine position.

    摘要翻译: 公开了在通信网络中传送发射机信息的方法和装置。 所述方法和装置特别地传送发射机特定信息,所述信息包括关于用于定位或定位类型业务的网络发射机的位置信息。 所公开的方法和装置包括在至少一个传输帧中的至少一个传输帧或控制信道的数据流内插入这样的发射机特定信息。 此外,发射机标识符被编码在至少一个传输帧内的定位导频信道(PPC)中,并且配置的传输帧被发送到用户设备。 用户设备可以使用多个发射机的发射机特定信息以及发射机标识符来测量它与发射机的距离,然后进行三角测量以确定位置。

    Methods and apparatus for time tracking using assistance from TDM pilots in a communication network
    23.
    发明授权
    Methods and apparatus for time tracking using assistance from TDM pilots in a communication network 有权
    在通信网络中使用TDM导频协助进行时间跟踪的方法和装置

    公开(公告)号:US08605690B2

    公开(公告)日:2013-12-10

    申请号:US12917789

    申请日:2010-11-02

    摘要: Methods and apparatus for time tracking using assistance from TDM pilots in a communication network. In an aspect, a method is provided for time tracking in a device operating on a communication network, wherein the device performs a time tracking algorithm. The method includes determining a delay spread, and modifying at least one parameter used by the time tracking algorithm based on the delay spread. In another aspect, an apparatus is provided for time tracking in a device operating on a communication network, wherein the device performs a time tracking algorithm. The apparatus includes computation logic for determining a delay spread, and control logic for modifying at least one parameter used by the time tracking algorithm based on the delay spread.

    摘要翻译: 在通信网络中使用TDM导频协助进行时间跟踪的方法和装置。 在一方面,提供了一种用于在通信网络上操作的设备中进行时间跟踪的方法,其中该设备执行时间跟踪算法。 该方法包括确定延迟扩展,以及基于延迟扩展修改由时间跟踪算法使用的至少一个参数。 在另一方面,提供了一种用于在通信网络上操作的设备中进行时间跟踪的设备,其中该设备执行时间跟踪算法。 该装置包括用于确定延迟扩展的计算逻辑,以及用于基于延迟扩展修改由时间跟踪算法使用的至少一个参数的控制逻辑。

    Methods and apparatus for time tracking using assistance from TDM pilots in a communication network
    24.
    发明授权
    Methods and apparatus for time tracking using assistance from TDM pilots in a communication network 有权
    在通信网络中使用TDM导频协助进行时间跟踪的方法和装置

    公开(公告)号:US07839831B2

    公开(公告)日:2010-11-23

    申请号:US11970381

    申请日:2008-01-07

    IPC分类号: H04J3/00 H04J3/06 H04B3/10

    摘要: Methods and apparatus for time tracking using assistance from TDM pilots in a communication network. In an aspect, a method is provided for time tracking in a device operating on a communication network, wherein the device performs a time tracking algorithm. The method includes determining a delay spread, and modifying at least one parameter used by the time tracking algorithm based on the delay spread. In another aspect, an apparatus is provided for time tracking in a device operating on a communication network, wherein the device performs a time tracking algorithm. The apparatus includes computation logic for determining a delay spread, and control logic for modifying at least one parameter used by the time tracking algorithm based on the delay spread.

    摘要翻译: 在通信网络中使用TDM导频协助进行时间跟踪的方法和装置。 在一方面,提供了一种用于在通信网络上操作的设备中进行时间跟踪的方法,其中该设备执行时间跟踪算法。 该方法包括确定延迟扩展,以及基于延迟扩展修改由时间跟踪算法使用的至少一个参数。 在另一方面,提供了一种用于在通信网络上操作的设备中进行时间跟踪的设备,其中该设备执行时间跟踪算法。 该装置包括用于确定延迟扩展的计算逻辑,以及用于基于延迟扩展修改由时间跟踪算法使用的至少一个参数的控制逻辑。

    METHODS AND APPARATUS FOR TIME TRACKING USING ASSITANCE FROM TDM PILOTS IN A COMMUNICATION NETWORK
    25.
    发明申请
    METHODS AND APPARATUS FOR TIME TRACKING USING ASSITANCE FROM TDM PILOTS IN A COMMUNICATION NETWORK 有权
    在通信网络中使用TDM PILOTS的资产进行时间跟踪的方法和装置

    公开(公告)号:US20110116396A1

    公开(公告)日:2011-05-19

    申请号:US12917789

    申请日:2010-11-02

    IPC分类号: H04J3/14 H04L12/26

    摘要: Methods and apparatus for time tracking using assistance from TDM pilots in a communication network. In an aspect, a method is provided for time tracking in a device operating on a communication network, wherein the device performs a time tracking algorithm. The method includes determining a delay spread, and modifying at least one parameter used by the time tracking algorithm based on the delay spread. In another aspect, an apparatus is provided for time tracking in a device operating on a communication network, wherein the device performs a time tracking algorithm. The apparatus includes computation logic for determining a delay spread, and control logic for modifying at least one parameter used by the time tracking algorithm based on the delay spread.

    摘要翻译: 在通信网络中使用TDM导频协助进行时间跟踪的方法和装置。 在一方面,提供了一种用于在通信网络上操作的设备中进行时间跟踪的方法,其中该设备执行时间跟踪算法。 该方法包括确定延迟扩展,以及基于延迟扩展修改由时间跟踪算法使用的至少一个参数。 在另一方面,提供了一种用于在通信网络上操作的设备中进行时间跟踪的设备,其中该设备执行时间跟踪算法。 该装置包括用于确定延迟扩展的计算逻辑,以及用于基于延迟扩展修改由时间跟踪算法使用的至少一个参数的控制逻辑。

    METHODS AND APPARATUS FOR ADAPTING CHANNEL ESTIMATION IN A COMMUNICATION SYSTEM
    28.
    发明申请
    METHODS AND APPARATUS FOR ADAPTING CHANNEL ESTIMATION IN A COMMUNICATION SYSTEM 有权
    在通信系统中适应通道估计的方法和装置

    公开(公告)号:US20090245333A1

    公开(公告)日:2009-10-01

    申请号:US12396144

    申请日:2009-03-02

    IPC分类号: H04B1/38

    CPC分类号: H04L25/0202

    摘要: Methods and apparatus for adapting a channel estimation scheme in a transceiver in a communication system are disclosed to adapt channel estimation to the transceiver environment, particularly for high Doppler environments. The disclosed methods and apparatus effect determination of an estimate of a power delay profile of a channel or a time correlation of the channel, or both. A channel estimation scheme is then determined based on at least one of the determined power delay profile and time correlation of the channel. By basing determination of a channel estimation scheme on the power delay profile and/or the time correlation of the channel, the channel estimation scheme is adapted to the particular environment of the transceiver by accounting for the delay spread of the channel and/or the speed of the transceiver.

    摘要翻译: 公开了用于在通信系统中的收发器中适配信道估计方案的方法和装置,以使信道估计适应收发器环境,特别是对于高多普勒环境。 所公开的方法和装置效应确定信道的功率延迟分布的估计或信道的时间相关性,或两者。 然后基于所确定的功率延迟分布和信道的时间相关性中的至少一个来确定信道估计方案。 通过基于信道估计方案对功率延迟分布的确定和/或信道的时间相关性,信道估计方案通过考虑信道的延迟扩展和/或速度来适应收发器的特定环境 的收发器。

    METHODS AND APPARATUS FOR TIMING SYNCHRONIZATION BASED ON TRANSITIONAL PILOT SYMBOLS
    29.
    发明申请
    METHODS AND APPARATUS FOR TIMING SYNCHRONIZATION BASED ON TRANSITIONAL PILOT SYMBOLS 有权
    基于过渡引导符号的时序同步的方法与装置

    公开(公告)号:US20080165908A1

    公开(公告)日:2008-07-10

    申请号:US11765428

    申请日:2007-06-19

    IPC分类号: H04L7/00

    摘要: Methods and apparatus for timing synchronization based on transitional pilot symbols. In an aspect, a method is provided for time tracking synchronization in an OFDM system. The method includes receiving at least one TDM pilot symbol comprising a plurality of modulated sub-carriers that are configured to provide a channel estimate having a length that extends up to a duration of an FFT used for data transmission. The method also includes determining one or both of an instantaneous and averaged channel estimates from the plurality of modulated sub-carriers, and calculating a timing offset based on one or both of the channel estimates. An apparatus includes a receiver configured to receive the at least one TDM pilot symbol, a channel estimator configured to determine the instantaneous and averaged channel estimates, and a time synchronizer configured to calculate a timing offset based on the channel estimates.

    摘要翻译: 基于过渡导频符号的定时同步的方法和装置。 在一方面,提供了一种用于OFDM系统中的时间跟踪同步的方法。 该方法包括接收至少一个TDM导频符号,该TDM导频符号包括多个经调制的子载波,其被配置为提供具有延伸到用于数据传输的FFT的持续时间的长度的信道估计。 该方法还包括确定来自多个调制子载波的瞬时和平均信道估计中的一个或两个,以及基于信道估计中的一个或两个来计算定时偏移。 一种装置包括被配置为接收所述至少一个TDM导频符号的接收机,被配置为确定瞬时和平均信道估计的信道估计器,以及被配置为基于信道估计来计算定时偏移的时间同步器。

    Methods and apparatus for timing synchronization based on transitional pilot symbols
    30.
    发明授权
    Methods and apparatus for timing synchronization based on transitional pilot symbols 有权
    基于过渡导频符号的定时同步的方法和装置

    公开(公告)号:US09008198B2

    公开(公告)日:2015-04-14

    申请号:US11765428

    申请日:2007-06-19

    摘要: Methods and apparatus for timing synchronization based on transitional pilot symbols. In an aspect, a method is provided for time tracking synchronization in an OFDM system. The method includes receiving at least one TDM pilot symbol comprising a plurality of modulated sub-carriers that are configured to provide a channel estimate having a length that extends up to a duration of an FFT used for data transmission. The method also includes determining one or both of an instantaneous and averaged channel estimates from the plurality of modulated sub-carriers, and calculating a timing offset based on one or both of the channel estimates. An apparatus includes a receiver configured to receive the at least one TDM pilot symbol, a channel estimator configured to determine the instantaneous and averaged channel estimates, and a time synchronizer configured to calculate a timing offset based on the channel estimates.

    摘要翻译: 基于过渡导频符号的定时同步的方法和装置。 在一方面,提供了一种用于OFDM系统中的时间跟踪同步的方法。 该方法包括:接收至少一个TDM导频符号,该TDM导频符号包括多个经调制的子载波,其被配置为提供具有延伸到用于数据传输的FFT的持续时间的长度的信道估计。 该方法还包括确定来自多个调制子载波的瞬时和平均信道估计中的一个或两个,以及基于信道估计中的一个或两个来计算定时偏移。 一种装置包括被配置为接收所述至少一个TDM导频符号的接收机,被配置为确定瞬时和平均信道估计的信道估计器,以及被配置为基于信道估计来计算定时偏移的时间同步器。