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1. 发明授权

US08477809B2 Systems and methods for generalized slot-to-interlace mapping 有权
标题翻译：用于广义时隙到交错映射的系统和方法
公开(公告)号：US08477809B2
公开(公告)日：2013-07-02
申请号：US11834671
申请日：2007-08-06
申请人： Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajiv Vijayan
发明人： Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajiv Vijayan
IPC分类号： H04J3/06 , H04J9/00 , H04W4/00 , H04L27/28
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/0044 , H04L25/0224
摘要： A transmitter or receiver device includes a processing system configured to have one or more pilot interlace vectors and one or more distance vectors. The processing system is further configured to generate a first slot interlace for a first slot based on the one or more pilot interlace vectors, and is further configured to generate a second slot interlace for a second slot based on the first slot interlace and the one or more distance vectors. Additional slot interlaces for all other slots may also be generated based on the first slot interlace and the one or more distance vectors.
摘要翻译：发射机或接收机设备包括被配置为具有一个或多个导频交织向量和一个或多个距离向量的处理系统。所述处理系统还被配置为基于所述一个或多个导频交错向量来生成用于第一时隙的第一时隙交织，并且还被配置为基于所述第一时隙交织和所述第一时隙交织而生成用于第二时隙的第二时隙交织，更多距离矢量。也可以基于第一时隙交错和一个或多个距离矢量来生成用于所有其他时隙的附加时隙交织。

2. 发明授权

US09356752B2 Wide area and local network ID transmission for communication systems 有权
公开(公告)号：US09356752B2
公开(公告)日：2016-05-31
申请号：US12948759
申请日：2010-11-18
申请人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajiv Vijayan
发明人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajiv Vijayan
IPC分类号： H04L5/00 , H04L27/26
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/0083 , H04L27/261
摘要： The embodiments utilize OFDM symbols to communicate network IDs. The IDs are encoded into symbols utilizing the network IDs as seeds to scramble respective pilots that are then transmitted by utilizing the symbols. The pilots can be structured into a single OFDM symbol and/or multiple OFDM symbols. The single symbol structure for transmitting the network IDs is independent of the number of network ID bits and minimizes frequency offset and Doppler effects. The multiple symbol structure allows a much coarser timing accuracy to be employed at the expense of transmitting additional symbols. Several embodiments employ a search function to find possible network ID candidates from a transmitted symbol and a selection function to find an optimum candidate from a network ID candidate list.

3. 发明申请

US20110058469A1 WIDE AREA AND LOCAL NETWORK ID TRANSMISSION FOR COMMUNICATION SYSTEMS 有权
标题翻译：用于通信系统的宽带和本地网络标识传输
公开(公告)号：US20110058469A1
公开(公告)日：2011-03-10
申请号：US12948759
申请日：2010-11-18
申请人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajiv Vijayan
发明人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajiv Vijayan
IPC分类号： H04J11/00 , H04L27/28
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/0083 , H04L27/261
摘要： The embodiments utilize OFDM symbols to communicate network IDs. The IDs are encoded into symbols utilizing the network IDs as seeds to scramble respective pilots that are then transmitted by utilizing the symbols. The pilots can be structured into a single OFDM symbol and/or multiple OFDM symbols. The single symbol structure for transmitting the network IDs is independent of the number of network ID bits and minimizes frequency offset and Doppler effects. The multiple symbol structure allows a much coarser timing accuracy to be employed at the expense of transmitting additional symbols. Several embodiments employ a search function to find possible network ID candidates from a transmitted symbol and a selection function to find an optimum candidate from a network ID candidate list.
摘要翻译：这些实施例利用OFDM符号来传送网络ID。 ID被编码成使用网络ID作为种子的符号，以对通过利用符号进行发送的各个导频进行加扰。导频可以被构造成单个OFDM符号和/或多个OFDM符号。用于发送网络ID的单个符号结构与网络ID比特数无关，并且使频偏和多普勒效应最小化。多符号结构允许以牺牲传输附加符号为代价采用更粗糙的定时精度。几个实施例采用搜索功能来从发送的符号和选择功能中找到可能的网络ID候选，以从网络ID候选列表中找到最佳候选。

4. 发明授权

US07852822B2 Wide area and local network ID transmission for communication systems 有权
标题翻译：通信系统的广域和本地网络ID传输
公开(公告)号：US07852822B2
公开(公告)日：2010-12-14
申请号：US11021310
申请日：2004-12-22
申请人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajiv Vijayan
发明人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajiv Vijayan
IPC分类号： H04J1/00
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/0083 , H04L27/261
摘要： The embodiments utilize OFDM symbols to communicate network IDs. The IDs are encoded into symbols utilizing the network IDs as seeds to scramble respective pilots that are then transmitted by utilizing the symbols. The pilots can be structured into a single OFDM symbol and/or multiple OFDM symbols. The single symbol structure for transmitting the network IDs is independent of the number of network ID bits and minimizes frequency offset and Doppler effects. The multiple symbol structure allows a much coarser timing accuracy to be employed at the expense of transmitting additional symbols. Several embodiments employ a search function to find possible network ID candidates from a transmitted symbol and a selection function to find an optimum candidate from a network ID candidate list.
摘要翻译：这些实施例利用OFDM符号来传送网络ID。 ID被编码成使用网络ID作为种子的符号，以对通过利用符号进行发送的各个导频进行加扰。导频可以被构造成单个OFDM符号和/或多个OFDM符号。用于发送网络ID的单个符号结构与网络ID比特数无关，并且使频偏和多普勒效应最小化。多符号结构允许以牺牲传输附加符号为代价采用更粗糙的定时精度。几个实施例采用搜索功能来从发送的符号和选择功能中找到可能的网络ID候选，以从网络ID候选列表中找到最佳候选。

5. 发明授权

US08605690B2 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
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： H04J3/00 , H04J3/06 , H04B3/10 , H04L7/00
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。

6. 发明授权

US08553822B2 Time filtering for excess delay mitigation in OFDM systems 有权
标题翻译： OFDM系统中多余延迟缓解的时间滤波
公开(公告)号：US08553822B2
公开(公告)日：2013-10-08
申请号：US11022513
申请日：2004-12-22
申请人： Dhananjay Ashok Gore , Ashok Mantravadi , Fuyun Ling , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi
发明人： Dhananjay Ashok Gore , Ashok Mantravadi , Fuyun Ling , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi
IPC分类号： H04B1/10
CPC分类号： H04L25/0224 , H04L25/0212 , H04L25/022
摘要： Pilot transmission and channel estimation techniques for an OFDM system with excess delay spread are described. To mitigate the deleterious effects of excess delay spread, time filtering is utilized. Time filtering is utilized to combat excess delay spread effects in channel estimation. The time filtering is performed in the presence of staggered pilots and helps in improving the channel estimate in the presence of excess delay spread.
摘要翻译：描述了具有超延迟扩展的OFDM系统的导频传输和信道估计技术。为了减轻多余延迟扩展的有害影响，利用时间滤波。利用时间滤波来对付信道估计中的多余延迟扩散效应。在存在交错导频的情况下执行时间滤波，并有助于在存在超延迟扩展的情况下改善信道估计。

7. 发明授权

US08311133B2 Method and apparatus for sensing signaling parameters in a wireless communications network 有权
标题翻译：用于在无线通信网络中感测信令参数的方法和装置
公开(公告)号：US08311133B2
公开(公告)日：2012-11-13
申请号：US11834653
申请日：2007-08-06
申请人： Durk L. van Veen , Ashok Mantravadi , Raghuraman Krishnamoorthi , Murali Ramaswamy Chari , Krishna Kiran Mukkavilli , Fuyun Ling
发明人： Durk L. van Veen , Ashok Mantravadi , Raghuraman Krishnamoorthi , Murali Ramaswamy Chari , Krishna Kiran Mukkavilli , Fuyun Ling
IPC分类号： H04L27/28 , H04B7/216
CPC分类号： H04L27/2613 , H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L5/0053 , H04L5/008 , H04L5/0094 , H04L27/2607 , H04L27/2626 , H04L27/2628 , H04L27/2647 , H04L27/2656
摘要： A new channel is added to FLO networks that carries embedded signaling parameter information. The design is such that regardless of the actual values of the signaling parameters conveyed, a receiver will be able to demodulate this new channel. Moreover, the addition of the new channel does not render a FLO network that has been so configured to not be backwards-compatible with existing devices.
摘要翻译：一个新的信道被添加到携带嵌入式信令参数信息的FLO网络中。这种设计使得无论传达的信令参数的实际值如何，接收机将能够解调这个新的信道。此外，添加新频道并不会使FLO网络被配置为不与现有设备向后兼容。

8. 发明授权

US08229708B2 Methods and apparatus for signal and interference energy estimation in a communication system 有权
标题翻译：通信系统中信号和干扰能量估计的方法和装置
公开(公告)号：US08229708B2
公开(公告)日：2012-07-24
申请号：US11563627
申请日：2006-11-27
申请人： Ashok Mantravadi , Fuyun Ling , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi
发明人： Ashok Mantravadi , Fuyun Ling , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi
IPC分类号： G01R15/00 , G01R21/00 , H04B15/00 , H04B1/10 , H04B3/46 , H04B1/00 , H04B17/00 , H04B1/04 , H04B1/12 , H04L25/08
CPC分类号： H04B1/1027
摘要： Methods and apparatus for signal and interference energy estimation in a communication system. In an aspect, a method includes setting a threshold value, and comparing a channel estimate to the threshold value to determine an interference estimate (Iest). The method also includes averaging the interference estimate (Iest) to determine average channel interference (Ic), and determining interference energy (I) based on the interference estimate (Iest) and the average channel interference (Ic). In another aspect, an apparatus includes threshold logic configured to set a threshold value and compare a channel estimate to the threshold value to determine an interference estimate (Iest). The apparatus includes averaging logic configured to average the interference estimate (Iest) to determine average channel interference (Ic), and summing logic configured to determine interference energy (I) based on the interference estimate (Iest) and average channel interference (Ic).
摘要翻译：通信系统中信号和干扰能量估计的方法和装置。一方面，一种方法包括设置阈值，以及将信道估计与阈值进行比较以确定干扰估计（Iest）。该方法还包括对干扰估计（Iest）进行平均以确定平均信道干扰（Ic），以及基于干扰估计（Iest）和平均信道干扰（Ic）来确定干扰能量（I）。在另一方面，一种装置包括阈值逻辑，其被配置为设置阈值并将信道估计与阈值进行比较以确定干扰估计（Iest）。该装置包括被配置为平均干扰估计（Iest）以确定平均信道干扰（Ic）的平均逻辑，以及被配置为基于干扰估计（Iest）和平均信道干扰（Ic））来确定干扰能量（I）的求和逻辑。

9. 发明授权

US07839831B2 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
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： H04J3/00 , H04J3/06 , H04B3/10
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。

10. 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。

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