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81. 发明申请

US20060233097A1 Time tracking for a communication system 有权
标题翻译：通讯系统的时间跟踪
公开(公告)号：US20060233097A1
公开(公告)日：2006-10-19
申请号：US11371536
申请日：2006-03-08
申请人： Bojan Vrcelj , Ashok Mantravadi , Fuyun Ling , Rajiv Vijayan , Michael Wang
发明人： Bojan Vrcelj , Ashok Mantravadi , Fuyun Ling , Rajiv Vijayan , Michael Wang
IPC分类号： H04J11/00
CPC分类号： H04L27/2662 , H04L5/0007 , H04L5/0048 , H04L25/0216 , H04L25/022 , H04L25/0228 , H04L27/261 , H04L27/265 , H04L27/2665 , H04L27/2679
摘要： A method for characterizing a communication channel is disclosed. A detection window is moved through a channel profile to accumulate tap energies in the channel profile within the detection window into an accumulated energy curve. A peak at a maximum in the accumulated energy curve is determined. A band relative to the accumulated energy curve is defined. A first arriving path (FAP) is determined using a trailing edge found near a second end of a zone in the accumulated energy curve. A leading edge is found near a first end of the zone of the accumulated energy curve. The last arriving path (LAP) is determined using the leading edge. The band defines a zone of the accumulated energy curve at or near the maximum that is within the band.
摘要翻译：公开了一种用于表征通信信道的方法。检测窗口通过通道轮廓移动，以将检测窗口内的通道轮廓中的抽头能量累积为累积的能量曲线。确定累积能量曲线中最大值的峰值。定义相对于累积能量曲线的带。使用在累积能量曲线中的区域的第二端附近发现的后沿来确定第一到达路径（FAP）。在累积能量曲线的区域的第一端附近发现前沿。最后到达路径（LAP）使用前沿确定。频带定义在频带内或附近的最大值处的累积能量曲线的区域。

82. 发明申请

US20060227812A1 Timing corrections in a multi carrier system and propagation to a channel estimation time filter 有权
标题翻译：多载波系统中的定时校正和传播到信道估计时间滤波器
公开(公告)号：US20060227812A1
公开(公告)日：2006-10-12
申请号：US11373764
申请日：2006-03-09
申请人： Bojan Vrcelj , Ashok Mantravadi , Fuyun Ling , Krishna Mukkavilli
发明人： Bojan Vrcelj , Ashok Mantravadi , Fuyun Ling , Krishna Mukkavilli
IPC分类号： H04J3/06
CPC分类号： H04L25/0232 , H04L25/0212 , H04L25/0224 , H04L25/025 , H04L27/2662 , H04L27/2665
摘要： Systems and methods are provided for determining and applying timing corrections in a digital communications system. In an aspect, a timing correction method is provided for a multi-carrier system. This includes aligning two or more symbols with respect to each other from a symbol subset in order to account for timing differences between the symbols. The symbol alignment is first carried out to generate channel estimates for data demodulation. The channel estimates, thus generated, along with the timing alignment information are in turn used for determining timing corrections to be applied to future symbols.
摘要翻译：提供了用于在数字通信系统中确定和应用定时校正的系统和方法。在一方面，为多载波系统提供定时校正方法。这包括从符号子集彼此对准两个或更多个符号，以便考虑符号之间的时序差异。首先执行符号对齐以产生用于数据解调的信道估计。由此生成的信道估计与定时对准信息一起被用于确定要应用于未来符号的定时校正。

83. 发明申请

US20060215539A1 Trend influenced time tracking 有权
标题翻译：趋势影响时间跟踪
公开(公告)号：US20060215539A1
公开(公告)日：2006-09-28
申请号：US11371535
申请日：2006-03-08
申请人： Bojan Vrcelj , Ashok Mantravadi , Fuyun Ling , Rajiv Vijayan , Michael Wang
发明人： Bojan Vrcelj , Ashok Mantravadi , Fuyun Ling , Rajiv Vijayan , Michael Wang
IPC分类号： H04J11/00 , H04Q7/00 , H04Q7/20
CPC分类号： H04L27/2662 , H04L5/0007 , H04L5/0048 , H04L25/0216 , H04L25/022 , H04L25/0228 , H04L27/261 , H04L27/265 , H04L27/2665 , H04L27/2679
摘要： A method for determining a communication channel location is disclosed. A first subset of a plurality of channel impulse responses is averaged over a first time period to produce a first filtered channel impulse response, and a second subset of the plurality of channel impulse responses is averaged over a second time period to produce a second filtered channel impulse response. The second time period is different from the first time period, and the second subset is different from the first subset. The communication channel location is determined using the first filtered channel impulse response and the second filtered channel impulse response.
摘要翻译：公开了一种用于确定通信信道位置的方法。多个信道脉冲响应的第一子集在第一时间段内被平均以产生第一经滤波的信道脉冲响应，并且在第二时间周期上平均多个信道脉冲响应的第二子集，以产生第二滤波信道脉冲响应。第二时间段与第一时间段不同，第二子集与第一子集不同。使用第一滤波信道脉冲响应和第二滤波信道脉冲响应来确定通信信道位置。

84. 发明申请

US20090279471A1 LOCAL AND WIDE-AREA TRANSMISSIONS IN A WIRELESS BROADCAST NETWORK 有权
标题翻译：无线广播网络中的本地和宽带传输
公开(公告)号：US20090279471A1
公开(公告)日：2009-11-12
申请号：US12506055
申请日：2009-07-20
申请人： Rajiv Vijayan , Fuyun Ling , Gordon Kent Walker , Ramaaswamy Murali , Ashok Mantravadi , Anand Subramaniam , Krishnamurthy Viswanathan
发明人： Rajiv Vijayan , Fuyun Ling , Gordon Kent Walker , Ramaaswamy Murali , Ashok Mantravadi , Anand Subramaniam , Krishnamurthy Viswanathan
IPC分类号： H04H20/71 , H04L27/28
CPC分类号： H04L5/0041 , H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L12/189 , H04W72/005
摘要： To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network, each base station processes data for a wide-area transmission in accordance with a first mode (or coding and modulation scheme) to generate data symbols for the wide-area transmission and processes data for a local transmission in accordance with a second mode to generate data symbols for the local transmission. The first and second modes are selected based on the desired coverage for wide-area and local transmissions, respectively. The base station also generates pilots and overhead information for local and wide-area transmissions. The data, pilots, and overhead information for local and wide-area transmissions are multiplexed onto their transmission spans, which may be different sets of frequency subbands, different time segments, or different groups of subbands in different time segments. More than two different types of transmission may also be multiplexed and broadcast.
摘要翻译：为了在无线广播网络中广播具有不同层次的不同类型的传输，每个基站根据第一模式（或编码和调制方案）处理广域传输的数据，以产生广域的数据符号根据第二模式传输和处理用于本地传输的数据，以产生用于本地传输的数据符号。分别基于广域和本地传输的期望覆盖来选择第一和第二模式。基站还为本地和广域传输生成导频和开销信息。用于本地和广域传输的数据，导频和开销信息被复用到它们的传输跨度，其可以是不同组的频率子带，不同时间段或不同时间段中的不同子带组。多于两种不同类型的传输也可以被复用和广播。

85. 发明申请

US20060245349A1 Collection window positioning using time tracking information 有权
标题翻译：收集窗口定位使用时间跟踪信息
公开(公告)号：US20060245349A1
公开(公告)日：2006-11-02
申请号：US11371837
申请日：2006-03-08
申请人： Bojan Vrcelj , Ashok Mantravadi , Fuyun Ling , Rajiv Vijayan , Michael Wang
发明人： Bojan Vrcelj , Ashok Mantravadi , Fuyun Ling , Rajiv Vijayan , Michael Wang
IPC分类号： H04J11/00
CPC分类号： H04L27/2662 , H04L5/0007 , H04L5/0048 , H04L25/0216 , H04L25/022 , H04L25/0228 , H04L27/261 , H04L27/265 , H04L27/2665 , H04L27/2679
摘要： A method for positioning a collection window for a Fourier transform function is disclosed. A first orthogonal frequency division multiplexing (OFDM) symbol and a second OFDM symbol are received. The first OFDM symbol comprises a plurality of frequency division multiplexed (FDM) symbols. The first OFDM symbol is characterized by at least two of the following: a delay spread, a first arriving path (FAP), or a last arriving path (LAP). A channel location is estimated from a channel impulse response. A point relative to the channel location is selected. A beginning of the collection window is positioned for the second OFDM symbol at the selected point. Alternatively, a point is selected at a first location relative to the channel location using a first algorithm if a delay spread is less than a predetermined length. The selected point is chosen at a second location relative to the channel location using a second algorithm if the delay spread is greater than the predetermined length.
摘要翻译：公开了一种用于定位用于傅立叶变换函数的收集窗口的方法。接收第一正交频分复用（OFDM）符号和第二OFDM符号。第一OFDM符号包括多个频分复用（FDM）符号。第一OFDM符号的特征在于以下至少两个：延迟扩展，第一到达路径（FAP）或最后到达路径（LAP）。从信道脉冲响应估计信道位置。选择相对于通道位置的点。收集窗口的开始位于所选点处的第二OFDM符号。或者，如果延迟扩展小于预定长度，则使用第一算法在相对于信道位置的第一位置处选择点。如果延迟扩展大于预定长度，则使用第二算法在相对于信道位置的第二位置处选择所选择的点。

86. 发明授权

US08755476B2 Apparatus and method for antenna switching diversity in an OFDM system 失效
标题翻译： OFDM系统中天线切换分集的装置和方法
公开(公告)号：US08755476B2
公开(公告)日：2014-06-17
申请号：US12695921
申请日：2010-01-28
申请人： Linbo Li , Ashok Mantravadi
发明人： Linbo Li , Ashok Mantravadi
IPC分类号： H04B7/10
CPC分类号： H04B7/0805 , H04B7/0811
摘要： Methods, systems, and apparatus, including computer programs encoded on computer storage media, for antenna switching diversity comprising: identifying the start of an OFDM symbol period; switching from an original antenna to an alternative antenna; calculating a signal quality metric associated with the original antenna and the alternative antenna; and selecting either the original antenna or the alternative antenna for demodulation of a current OFDM symbol based on the calculated signal quality metric. In one aspect, the antenna switching diversity is based on either symbol rate switching or block rate switching, and a selection of one or the other is made.
摘要翻译：方法，系统和装置，包括在计算机存储介质上编码的用于天线切换分集的计算机程序，包括：识别OFDM符号周期的开始; 从原始天线切换到替代天线; 计算与原始天线和替代天线相关联的信号质量度量; 以及基于所计算的信号质量度量，选择原始天线或替代天线以解调当前OFDM符号。在一个方面，天线切换分集基于符号速率切换或块速率切换，并且进行一个或另一个的选择。

87. 发明申请

US20100195754A1 APPARATUS AND METHOD FOR ANTENNA SWITCHING DIVERSITY IN AN OFDM SYSTEM 失效
标题翻译：在OFDM系统中天线切换多样性的装置和方法
公开(公告)号：US20100195754A1
公开(公告)日：2010-08-05
申请号：US12695921
申请日：2010-01-28
申请人： LINBO LI , Ashok Mantravadi
发明人： LINBO LI , Ashok Mantravadi
IPC分类号： H04B7/02 , H04L27/00
CPC分类号： H04B7/0805 , H04B7/0811
摘要： Methods, systems, and apparatus, including computer programs encoded on computer storage media, for antenna switching diversity comprising: identifying the start of an OFDM symbol period; switching from an original antenna to an alternative antenna; calculating a signal quality metric associated with the original antenna and the alternative antenna; and selecting either the original antenna or the alternative antenna for demodulation of a current OFDM symbol based on the calculated signal quality metric. In one aspect, the antenna switching diversity is based on either symbol rate switching or block rate switching, and a selection of one or the other is made.
摘要翻译：方法，系统和装置，包括在计算机存储介质上编码的用于天线切换分集的计算机程序，包括：识别OFDM符号周期的开始; 从原始天线切换到替代天线; 计算与原始天线和替代天线相关联的信号质量度量; 以及基于所计算的信号质量度量，选择原始天线或替代天线以解调当前OFDM符号。在一个方面，天线切换分集基于符号速率切换或块速率切换，并且进行一个或另一个的选择。

88. 发明授权

US09578649B2 Method and apparatus to facilitate support for multi-radio coexistence 有权
标题翻译：便于支持多无线电共存的方法和装置
公开(公告)号：US09578649B2
公开(公告)日：2017-02-21
申请号：US13351739
申请日：2012-01-17
申请人： Pranav Dayal , Tamer Adel Kadous , Rajat Prakash , Ashok Mantravadi , Ahmed K. Sadek
发明人： Pranav Dayal , Tamer Adel Kadous , Rajat Prakash , Ashok Mantravadi , Ahmed K. Sadek
IPC分类号： H04L12/28 , H04W72/12 , H04W88/06
CPC分类号： H04W72/1215 , H04W88/06
摘要： To improve performance in devices capable of communication using multiple radio access technologies (RATs), a gap pattern may be constructed in which a first RAT is quieted during certain times to allow for a second RAT to operate without interference. Gap patterns may be constructed based on timeline constraints, such as grant scheduling and HARQ performance, or based on desired performance levels of one or more of the RATs. Gap patterns may be selected by a user equipment or base station. Gap patterns may be selected to protect information in certain subframes. Potential gap patterns may be assigned weights indicating their desirability.
摘要翻译：为了提高能够使用多个无线电接入技术（RAT）进行通信的设备的性能，可以构建间隙模式，其中第一RAT在特定时间内被安静，以允许第二RAT在没有干扰的情况下运行。间隙模式可以基于诸如授权调度和HARQ性能之类的时间线约束，或者基于一个或多个RAT的期望的性能水平来构建。间隙模式可以由用户设备或基站选择。可以选择间隙模式来保护某些子帧中的信息。潜在的差距模式可以分配权重，指示其可取性。

89. 发明授权

US09161233B2 Method and apparatus to facilitate support for multi-radio coexistence 有权
标题翻译：便于支持多无线电共存的方法和装置
公开(公告)号：US09161233B2
公开(公告)日：2015-10-13
申请号：US13022823
申请日：2011-02-08
申请人： Jibing Wang , Joel Benjamin Linsky , Tamer A. Kadous , Ashok Mantravadi , Pranav Dayal
发明人： Jibing Wang , Joel Benjamin Linsky , Tamer A. Kadous , Ashok Mantravadi , Pranav Dayal
IPC分类号： H04W36/00 , H04W16/14 , H04W88/06
CPC分类号： H04W16/14 , H04W88/06
摘要： Interference between potentially conflicting radio access technologies (RATs) in a wireless device may be managed through a coexistence manager. The coexistence manager allows a first active RAT to yield conflicting resources to a second idle RAT for purposes of receiving signals to allow proper operation by the second RAT. These signals may be, for example, paging signals to a Long Term Evolution (LTE) radio or beacons to a wireless local area network (WLAN) radio.
摘要翻译：可以通过共存管理器来管理无线设备中潜在的冲突无线电接入技术（RAT）之间的干扰。共存管理器允许第一主动RAT产生与第二空闲RAT的冲突资源，用于接收信号以允许第二RAT的适当操作。这些信号可以是例如到长期演进（LTE）无线电的寻呼信号或者到无线局域网（WLAN）无线电的信标。

90. 发明授权

US09113488B2 Multi-radio coexistence of a broadband radio and a broadcast stream receiver that receives broadcast stream data 有权
标题翻译：宽带无线电的多无线电共存和接收广播流数据的广播流接收机
公开(公告)号：US09113488B2
公开(公告)日：2015-08-18
申请号：US13207745
申请日：2011-08-11
申请人： Seyfullah Halit Oguz , Tamer Adel Kadous , Ashok Mantravadi , Prasanna Kannan
发明人： Seyfullah Halit Oguz , Tamer Adel Kadous , Ashok Mantravadi , Prasanna Kannan
IPC分类号： H04W4/00 , H04W72/12 , H04W16/14
CPC分类号： H04W72/1215 , H04W16/14
摘要： A multi-radio device, such as User Equipment (UE), may experience coexistence issues among various ones of its constituent radio devices that operate at the same time. Various aspects of the disclosure provide techniques to mitigate coexistence issues in multi-radio devices, where significant in-device coexistence problems can exist. In particular, a method for coexistence of multi-radio devices is described. The method includes identifying, at an upper layer of a multi-radio UE, a type of incoming broadcast stream data. The method further includes determining a coexistence policy for operation of communication resources within the multi-radio UE based on the type of the incoming broadcast stream data. The method also includes arbitrating, at a lower layer of the multi-radio UE, between the communication resources based on the coexistence policy.
摘要翻译：诸如用户设备（UE）的多无线电设备可能在其同时操作的其组成无线电设备的各种设备之间经历共存问题。本公开的各个方面提供了减少多无线电设备中共存问题的技术，其中存在显着的设备内共存问题。特别地，描述了一种用于多无线电设备共存的方法。该方法包括在多无线电UE的上层识别输入的广播流数据的类型。该方法还包括基于输入的广播流数据的类型来确定用于在多无线电UE内的通信资源的操作的共存策略。该方法还包括在多无线电UE的较低层处，基于共存策略在通信资源之间进行仲裁。

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