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21. 发明申请

US20090028100A1 METHODS AND APPARATUS FOR TRANSMITTER IDENTIFICATION IN A WIRELESS NETWORK 审中-公开
标题翻译：无线网络中发射机识别的方法和设备
公开(公告)号：US20090028100A1
公开(公告)日：2009-01-29
申请号：US11834654
申请日：2007-08-06
申请人： Krishna Kiran Mukkavilli , Ashok Mantravadi , Raghuraman Krishnamoorthi , Murali Ramaswamy Chari
发明人： Krishna Kiran Mukkavilli , Ashok Mantravadi , Raghuraman Krishnamoorthi , Murali Ramaswamy Chari
IPC分类号： H04Q7/00 , H04L27/28
CPC分类号： H04L5/0007 , H04L5/0048 , H04L25/0224 , H04L27/2613
摘要： Methods and apparatus for transmitter identification in a wireless network are disclosed. In an example, a method is provided that encodes pilot information on a first portion of a number of subcarriers in a symbol within a pilot positioning channel for an active transmitter. The method further includes encoding transmitter identification information on a second dedicated portion of the number of subcarriers of the symbol. The method also encompasses including a transmitter allocation field that signals the number of succeeding symbols that will be used by the transmitter for transmitting any other information in an interference free manner. In another example, a method is provided that receives a symbol having a number of subcarriers from a transmitter. A channel estimate and an energy measurement of the symbol using a first portion of the subcarriers. A dedicated second portion of the number of subcarriers in the symbol are then decoded to determine the transmitter identification information.
摘要翻译：公开了用于无线网络中的发射机识别的方法和装置。在一个示例中，提供了一种方法，其对于有源发射机的导频定位信道内的符号中的多个子载波的第一部分上的导频信息进行编码。该方法还包括在符号的子载波数的第二专用部分上编码发射机识别信息。该方法还包括发射机分配字段，其指示将由干扰自由方式发送用于发送任何其它信息的发射机将使用的后续符号的数量。在另一示例中，提供了一种从发射机接收具有多个子载波的符号的方法。使用子载波的第一部分的信号估计和符号的能量测量。然后对符号中的子载波数量的专用第二部分进行解码以确定发射机识别信息。

22. 发明授权

US08855655B2 Methods and apparatus for signaling parameter distribution for neighboring radio frequencies 有权
标题翻译：用于信号参数分配的相邻射频的方法和装置
公开(公告)号：US08855655B2
公开(公告)日：2014-10-07
申请号：US12176376
申请日：2008-07-20
申请人： Binita Gupta , Krishna Kiran Mukkavilli , Ashok Mantravadi , Raghuraman Krishnamoorthi
发明人： Binita Gupta , Krishna Kiran Mukkavilli , Ashok Mantravadi , Raghuraman Krishnamoorthi
IPC分类号： H04W40/00 , H04W36/00
CPC分类号： H04W28/18 , H04W48/08
摘要： Methods and apparatus for signaling parameter distribution for neighboring radio frequencies. A method includes identifying selected local operations infrastructures (LOIs) and one or more neighboring LOIs, generating a neighbor description message (NDM) that identifies the selected LOIs and their respective neighbors and specifies SP information for each RF channel associated with the selected LOIs and their respective neighbors, and distributing the NDM over each of the selected LOIs. An apparatus includes a message decoder configured to receive a NDM that identifies RF channels associated with selected LOIs and one or more neighboring LOIs, wherein each RF channel is associated with SP information, and processing logic configured to receive a request to obtain selected SP information associated with a selected RF channel, determine the selected SP information associated with the selected RF channel based on the NDM, and output the selected SP information.
摘要翻译：用于信号参数分配的相邻射频的方法和装置。一种方法包括识别所选择的本地操作基础设施（LOI）和一个或多个相邻LOI，生成标识所选择的LOI及其相应邻居的邻居描述消息（NDM），并且为与所选择的LOI相关联的每个RF信道指定SP信息，并且在每个所选择的LOI上分发NDM。一种装置包括消息解码器，其被配置为接收标识与所选择的LOI和一个或多个相邻LOI相关联的RF信道的NDM，其中每个RF信道与SP信息相关联，以及处理逻辑，被配置为接收获取所选择的SP信息的请求利用所选择的RF信道，基于NDM确定与所选择的RF信道相关联的所选择的SP信息，并输出所选择的SP信息。

23. 发明授权

US08509325B2 Adaptive thresholding for OFDM channel estimation 有权
标题翻译： OFDM信道估计的自适应阈值
公开(公告)号：US08509325B2
公开(公告)日：2013-08-13
申请号：US12250135
申请日：2008-10-13
申请人： Ashok Mantravadi , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajeev Krishnamurthi
发明人： Ashok Mantravadi , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajeev Krishnamurthi
IPC分类号： H04L27/28
CPC分类号： H04L25/0218 , H04L5/0007 , H04L25/0204 , H04L25/022 , H04L25/0224
摘要： An adaptive thresholding technique eliminates suboptimum threshold values by adjusting for varying channel conditions to eliminate interference where no channel energy is present, without discarding viable taps having useful channel energy. The adaptive thresholding technique adaptively optimizes receive threshold values for both wide and local area channels based only on measured C/I ratios 300. Thresholds are calculated based on instantaneous C/I estimates and/or weighted average C/I estimates calculated from WID/LID energies obtained from the current superframe WIC/LIC symbols respectively. In alternate embodiments, thresholds are calculated based on instantaneous C/I estimates and/or weighted average C/I estimates calculated from WTPC and LTPC symbols for the wide and local area channels, respectively The present adaptive thresholding technique dynamically reduces the threshold as the C/I estimate increases to mitigate performance degradation due to removal of weak signal taps. There is a separate threshold for each of the 12 coding and modulation modes supported by an exemplary receiver.
摘要翻译：自适应阈值技术通过调整不同的信道条件来消除次优阈值，以消除不存在信道能量的干扰，而不丢弃具有有用信道能量的可行分接头。自适应阈值技术仅基于测量的C / I比300自适应地优化宽和局域信道的接收阈值。阈值基于从WID / LID计算的瞬时C / I估计和/或加权平均C / I估计来计算从当前超帧WIC / LIC符号获得的能量。在替代实施例中，基于针对宽和局域信道的WTPC和LTPC符号计算的瞬时C / I估计和/或加权平均C / I估计来计算阈值。当前自适应阈值技术动态地将阈值设置为C /我估计增加以减轻由于去除弱信号抽头而导致的性能下降。对于由示例性接收机支持的12个编码和调制模式中的每一个，存在单独的阈值。

24. 发明授权

US08102756B2 Method and apparatus for initial acquisition of signaling parameters for a wireless communications network 有权
标题翻译：用于初始获取无线通信网络的信令参数的方法和装置
公开(公告)号：US08102756B2
公开(公告)日：2012-01-24
申请号：US11834669
申请日：2007-08-06
申请人： Krishna Kiran Mukkavilli , Ashok Mantravadi , Raghuraman Krishnamoorthi , Murali Ramaswamy Chari , Tao Tian
发明人： Krishna Kiran Mukkavilli , Ashok Mantravadi , Raghuraman Krishnamoorthi , Murali Ramaswamy Chari , Tao Tian
IPC分类号： H04J11/00 , H04Q7/00
CPC分类号： H04W48/16 , H04L27/2647
摘要： A method of acquiring a forward link only (FLO) network in a radio frequency (RF) in a wireless communication environment, includes selecting a RF from a first list; selecting a signal parameter (SP) from a second list; determining if a first parameter is found using the selected RF and SP; and, upon determination that the first parameter is found, enabling the use of the selected RF and SP to communicate in the FLO network. An apparatus for implementing the method is also disclosed.
摘要翻译：一种在无线通信环境中在射频（RF）中获取前向链路（FLO）网络的方法，包括从第一列表中选择RF; 从第二列表中选择信号参数（SP）; 使用所选择的RF和SP确定是否发现第一参数; 并且在确定发现第一参数之后，使所选择的RF和SP能够在FLO网络中进行通信。还公开了一种用于实现该方法的装置。

25. 发明申请

US20080260008A1 METHODS AND APPARATUS FOR TIME TRACKING USING ASSISTANCE FROM TDM PILOTS IN A COMMUNICATION NETWORK 有权
标题翻译：在通信网络中使用TDM PILOTS协助进行时间跟踪的方法和装置
公开(公告)号：US20080260008A1
公开(公告)日：2008-10-23
申请号：US11970381
申请日：2008-01-07
申请人： Bojan Vrcelj , Ashok Mantravadi , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi
发明人： Bojan Vrcelj , Ashok Mantravadi , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi
IPC分类号： H04B1/707
CPC分类号： H04L27/2662 , H04L25/0216 , H04L25/0224 , H04L27/2675 , H04L27/2695
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。

26. 发明授权

US08259865B2 Methods and apparatus for adapting channel estimation in a communication system 有权
标题翻译：在通信系统中适应信道估计的方法和装置
公开(公告)号：US08259865B2
公开(公告)日：2012-09-04
申请号：US12396144
申请日：2009-03-02
申请人： Raghuraman Krishnamoorthi , Krishna Kiran Mukkavilli , Ashok Mantravadi
发明人： Raghuraman Krishnamoorthi , Krishna Kiran Mukkavilli , Ashok Mantravadi
IPC分类号： H04L27/06
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。

27. 发明申请

US20090028257A1 METHOD AND APPARATUS FOR INITIAL ACQUISITION OF SIGNALING PARAMETERS FOR A WIRELESS COMMUNICATIONS NETWORK 有权
标题翻译：用于无线通信网络的信号参数初始采集的方法和装置
公开(公告)号：US20090028257A1
公开(公告)日：2009-01-29
申请号：US11834669
申请日：2007-08-06
申请人： Krishna Kiran Mukkavilli , Ashok Mantravadi , Raghuraman Krishnamoorthi , Murali Ramaswamy Chari , Tao Tian
发明人： Krishna Kiran Mukkavilli , Ashok Mantravadi , Raghuraman Krishnamoorthi , Murali Ramaswamy Chari , Tao Tian
IPC分类号： H04K1/10
CPC分类号： H04W48/16 , H04L27/2647
摘要： A method of acquiring a forward link only (FLO) network in a radio frequency (RF) in a wireless communication environment, includes selecting a RF from a first list; selecting a signal parameter (SP) from a second list; determining if a first parameter is found using the selected RF and SP; and, upon determination that the first parameter is found, enabling the use of the selected RF and SP to communicate in the FLO network. An apparatus for implementing the method is also disclosed.
摘要翻译：一种在无线通信环境中在射频（RF）中获取前向链路（FLO）网络的方法，包括从第一列表中选择RF; 从第二列表中选择信号参数（SP）; 使用所选择的RF和SP确定是否发现第一参数; 并且在确定发现第一参数之后，使所选择的RF和SP能够在FLO网络中进行通信。还公开了一种用于实现该方法的装置。

28. 发明申请

US20110002413A1 TRANSMITTER COVERAGE IDENTIFICATION USING A CONTINUOUS WAVE TONE 审中-公开
标题翻译：发射机覆盖使用连续波纹识别
公开(公告)号：US20110002413A1
公开(公告)日：2011-01-06
申请号：US12496473
申请日：2009-07-01
申请人： Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Fuyun Ling , Ben A. Saidi , William A. Drennen
发明人： Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Fuyun Ling , Ben A. Saidi , William A. Drennen
IPC分类号： H04L27/00
CPC分类号： H04L5/0053 , H04L5/0073
摘要： A methodology for transmitter identification for a single frequency network is provided using a single CW tone. The tone can be transmitted outside the transmitter's active band. It is possible to arrive at significant overlap between the tone coverage area and the coverage area of a neighboring transmitter without disturbing the operations by picking the tone location and power appropriately.
摘要翻译：使用单个CW音调提供用于单频网络的发射机识别的方法。音调可以在发射器的有源频带外传输。可以通过适当地选择音调位置和功率来抵消音调覆盖区域和相邻发射机的覆盖区域之间的重大重叠，而不会干扰操作。

29. 发明授权

US07844018B2 Methods and apparatuses for reducing inter-carrier interference in an OFDM system 失效
标题翻译：用于减少OFDM系统中的载波间干扰的方法和装置
公开(公告)号：US07844018B2
公开(公告)日：2010-11-30
申请号：US11674632
申请日：2007-02-13
申请人： Tao Tian , Raghuraman Krishnamoorthi , Krishna Kiran Mukkavilli , Fuyun Ling
发明人： Tao Tian , Raghuraman Krishnamoorthi , Krishna Kiran Mukkavilli , Fuyun Ling
IPC分类号： H04L25/08
CPC分类号： H04L27/2657
摘要： An OFDM telecommunications system includes a transmitter and a receiver. The receiver includes a canceller configured to reduce inter-carrier interference (ICI) in an OFDM symbol in the frequency domain.
摘要翻译： OFDM电信系统包括发射机和接收机。接收机包括被配置为减少频域中的OFDM符号中的载波间干扰（ICI）的消除器。

30. 发明申请

US20100002781A1 TRANSMITTER IDENTIFICATION USING A CONTINUOUS WAVE TONE 审中-公开
标题翻译：发射机识别使用连续波音
公开(公告)号：US20100002781A1
公开(公告)日：2010-01-07
申请号：US12165661
申请日：2008-07-01
申请人： Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Fuyun Ling , Ben A. Saidi , William A. Drennen
发明人： Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Fuyun Ling , Ben A. Saidi , William A. Drennen
IPC分类号： H04L27/28
CPC分类号： H04W16/18 , H04W88/08
摘要： A methodology for transmitter identification for a single frequency network is provided using a single CW tone. The tone can be transmitted outside the transmitter's active band. It is possible to arrive at significant overlap between the tone coverage area and the coverage area of a neighboring transmitter without disturbing the operations by picking the tone location and power appropriately.
摘要翻译：使用单个CW音调提供用于单频网络的发射机识别的方法。音调可以在发射器的有源频带外传输。可以通过适当地选择音调位置和功率来抵消音调覆盖区域和相邻发射机的覆盖区域之间的重大重叠，而不会干扰操作。

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