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91. 发明申请

US20050003768A1 Methods and apparatus of providing transmit diversity in a multiple access wireless communication system 有权
标题翻译：在多址无线通信系统中提供发射分集的方法和装置
公开(公告)号：US20050003768A1
公开(公告)日：2005-01-06
申请号：US10763944
申请日：2004-01-23
申请人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan
发明人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan
IPC分类号： H04W88/18 , H04B7/06 , H03C7/02
CPC分类号： H04B7/0626
摘要： Methods and apparatus for providing channel diversity to wireless terminals (WTs) in a manner that reduces the latency between the time a WT encounters satisfactory channel conditions are described. A plurality of communications channels with different physical characteristics are maintained in a cell by a base station (BS). Each WT monitors multiple channels and maintains multiple channel estimates at the same time so that rapid switching between channels is possible. Channel quality information is conveyed from each WT to the BS. The WT or BS selects a channel based on the measured channel quality. By supporting multiple channels and by introducing periodic variations into the channels in various embodiments, the time before a WT encounters a channel with good or acceptable channel conditions is minimized even if the WT does not change location. Multiple antennas are used at the BS to support numerous channels simultaneously, e.g., by controlling antenna patterns.
摘要翻译：描述了以降低WT遇到令人满意的信道条件的时间之间的等待时间的方式向无线终端（WT）提供信道分集的方法和装置。具有不同物理特性的多个通信信道由基站（BS）保持在小区中。每个WT监视多个信道并同时维持多个信道估计，使得信道之间的快速切换是可能的。信道质量信息从每个WT传送到BS。 WT或BS基于测量的信道质量来选择信道。通过支持多个信道并且通过在各种实施例中引入周期性变化到信道中，即使WT不改变位置，WT遇到具有良好或可接受的信道条件的信道之前的时间被最小化。在BS处使用多个天线来同时支持多个信道，例如通过控制天线方向图。

92. 发明授权

US08548515B2 Open loop power offset update 有权
标题翻译：开环功率补偿更新
公开(公告)号：US08548515B2
公开(公告)日：2013-10-01
申请号：US13088210
申请日：2011-04-15
申请人： Samel Celebi , Charles Stanski , Sundeep Rangan
发明人： Samel Celebi , Charles Stanski , Sundeep Rangan
IPC分类号： H04Q7/20
CPC分类号： H04W52/50 , H04W52/10 , H04W52/146
摘要： Provided is an feedback mechanism to correct power control information in a broadcast signal that is determined to be incorrect by one or more devices that receive and rely on the broadcast information. A device that receives the incorrect broadcast information can determine a correction and to the information and provide a recommendation to tilt source of the broadcast information. The source can selectively determine whether to modify the broadcast information based on the recommendation from one or more devices. If the broadcast information is modified, subsequent devices that receive the broadcast information are provided with the modified information. If further changes are needed, the subsequent devices can provide further recommended changes.
摘要翻译：提供了一种反馈机制，用于校正由接收并依赖于广播信息的一个或多个设备确定为不正确的广播信号中的功率控制信息。接收不正确广播信息的设备可以确定对该信息的校正和提供倾斜广播信息源的建议。源可以基于来自一个或多个设备的推荐来选择性地确定是否修改广播信息。如果广播信息被修改，则接收广播信息的后续设备被提供修改的信息。如果需要进一步的更改，后续设备可以提供进一步的建议更改。

93. 发明授权

US08520723B2 Universal real-time interface for wireless modems 失效
标题翻译：无线调制解调器的通用实时接口
公开(公告)号：US08520723B2
公开(公告)日：2013-08-27
申请号：US12963910
申请日：2010-12-09
申请人： Sundeep Rangan , Prashanth Hande , Niranjan N. Ratnakar , Ozge Koymen , Ritesh K. Madan , Atul Maharshi , Subhadeep P. Roy , Siddharth Ray
发明人： Sundeep Rangan , Prashanth Hande , Niranjan N. Ratnakar , Ozge Koymen , Ritesh K. Madan , Atul Maharshi , Subhadeep P. Roy , Siddharth Ray
IPC分类号： H04B1/38
CPC分类号： H04L1/1877 , H04L1/188
摘要： The apparatus and methods described herein are used to provide data between an application and a modem. One method includes providing data in application data units from the application to the modem, transmitting the data from the modem to a receiver, and reporting by the modem to the application, whether each application data unit has been successfully transmitted from the modem to the receiver.
摘要翻译：本文描述的装置和方法用于在应用和调制解调器之间提供数据。一种方法包括将应用数据单元中的数据从应用程序提供给调制解调器，将数据从调制解调器发送到接收机，并由调制解调器向应用程序报告，每个应用数据单元是否已经成功地从调制解调器发送到接收机。

94. 发明申请

US20120147759A1 APPARATUS AND METHODS FOR PROVIDING A COMMUNICATION QUALITY FEEDBACK OF AN END-TO-END COMMUNICATION PATH 有权
标题翻译：提供端到端通信路径的通信质量反馈的装置和方法
公开(公告)号：US20120147759A1
公开(公告)日：2012-06-14
申请号：US12963889
申请日：2010-12-09
申请人： Niranjan N. Ratnakar , Prashanth Hande , Sundeep Rangan , Atul Maharshi , Subhadeep P. Roy , Ritesh K. Madan , Ozge Koymen , Siddharth Ray
发明人： Niranjan N. Ratnakar , Prashanth Hande , Sundeep Rangan , Atul Maharshi , Subhadeep P. Roy , Ritesh K. Madan , Ozge Koymen , Siddharth Ray
IPC分类号： H04J4/00
CPC分类号： H04W24/10 , H04L1/0026 , H04L1/1867 , H04L65/608 , H04L65/80
摘要： The apparatus and methods described herein are used to provide a communication quality feedback of an end-to-end communication path between an application transmitter and an application receiver. One method includes transmitting data from the application transmitter to the application receiver via the end-to-end communication path, the end-to-end communication path having at least one wireless link with a wireless transmitter and a wireless receiver, generating, at the wireless transmitter, a first communication quality feedback message, and transmitting the first communication quality feedback message from the wireless transmitter to the application transmitter in a standardized format.
摘要翻译：本文描述的装置和方法用于提供应用发射机和应用接收机之间的端到端通信路径的通信质量反馈。一种方法包括经由端对端通信路径将数据从应用发射机发送到应用接收机，端到端通信路径具有与无线发射机和无线接收机的至少一个无线链路，在无线发射机，第一通信质量反馈消息，以及以标准格式从无线发射机向应用发射机发送第一通信质量反馈消息。

95. 发明申请

US20120099435A1 ESTIMATING SPARSE MIMO CHANNELS HAVING COMMON SUPPORT 审中-公开
标题翻译：估计具有共同支持的SPARSE MIMO通道
公开(公告)号：US20120099435A1
公开(公告)日：2012-04-26
申请号：US13277124
申请日：2011-10-19
申请人： Yann Barbotin , Ali Hormati , Sundeep Rangan , Martin Vetterli
发明人： Yann Barbotin , Ali Hormati , Sundeep Rangan , Martin Vetterli
IPC分类号： H04L12/26
CPC分类号： H04L1/0631 , H04B1/7105 , H04B1/7113 , H04J11/0063 , H04L25/0204 , H04L27/2647
摘要： According to a first aspect of the present invention there is provided a method of estimating, jointly, a set of multipath channels having a common path support, the method comprising the steps of, estimating jointly the common path support of the set of multipath channels using a spectral estimation technique, estimating path amplitudes, for each channel in the set of multipath channels, using the estimation of the common path support, to obtain an estimate of the set of multipath channels.
摘要翻译：根据本发明的第一方面，提供了一种共同估计具有公共路径支持的一组多路径信道的方法，所述方法包括以下步骤：使用以下步骤共同估计所述多路径信道集合的公共路径支持：频谱估计技术，使用公共路径支持的估计来估计多径信道集合中的每个信道的路径振幅，以获得该多路径信道集合的估计。

96. 发明授权

US07869421B2 Uplink access request in an OFDM communication environment 有权
标题翻译： OFDM通信环境中的上行链路接入请求
公开(公告)号：US07869421B2
公开(公告)日：2011-01-11
申请号：US11486540
申请日：2006-07-14
申请人： Sundeep Rangan , Junyi Li
发明人： Sundeep Rangan , Junyi Li
IPC分类号： H04J3/08
CPC分类号： H04W56/0045 , H04L5/003 , H04L5/0078 , H04L5/0098
摘要： The claimed subject matter relates to acquiring channel access in a wireless communication environment. A wireless terminal may transmit first and second sets of tones over respective first and second contiguous transmission periods. The first and second tone sets may be disjoint from each other and may each comprise a number of contiguous tones. The terminal may then refrain from transmitting during a third time period in order to receive a grant signal from a base station in response to the access request. The beginnings of the first time period and the second time period may be a function of a determined uplink transmission time.
摘要翻译：所要求保护的主题涉及在无线通信环境中获取信道接入。无线终端可以在相应的第一和第二连续传输周期上传送第一和第二组音调。第一和第二音调集可以彼此不相交，并且可以各自包括多个连续的音调。然后终端可以在第三时间段期间避免发送，以便响应于接入请求从基站接收授权信号。第一时间段和第二时间段的开始可以是确定的上行链路传输时间的函数。

97. 发明申请

US20100238901A1 SYSTEMS, APPARATUS AND METHODS FOR INTERFERENCE MANAGEMENT IN WIRELESS NETWORKS 有权
标题翻译：无线网络干扰管理系统，装置及方法
公开(公告)号：US20100238901A1
公开(公告)日：2010-09-23
申请号：US12727155
申请日：2010-03-18
申请人： Ashwin Sampath , Sundeep Rangan , Raja Sekhar Bachu
发明人： Ashwin Sampath , Sundeep Rangan , Raja Sekhar Bachu
IPC分类号： H04W4/00 , H04B7/00
CPC分类号： H04W24/02 , H04W72/08 , H04W72/082 , H04W84/045
摘要： Systems, apparatus, methods and computer program products are provided. In some embodiments, a method for facilitating interference management in an unplanned wireless communication system is provided. The method can include a non-serving base station obtaining information about a user equipment served by a serving base station; and determining signal information based, at least, in part, on the information. The method can also include the non-serving base station disallowing access to the user equipment due to restricted access rules for the non-serving base station. The method can also include the non-serving base station performing interference management of the user equipment served by the serving base station. The interference management can be performed based, at least, in part, on the determined signal information.
摘要翻译：提供系统，设备，方法和计算机程序产品。在一些实施例中，提供了一种用于促进非计划无线通信系统中的干扰管理的方法。该方法可以包括非服务基站获取关于由服务基站服务的用户设备的信息; 以及至少部分地基于所述信息来确定信号信息。该方法还可以包括非服务基站由于非服务基站的受限访问规则而不允许对用户设备的访问。该方法还可以包括非服务基站对由服务基站服务的用户设备进行干扰管理。可以至少部分地基于确定的信号信息来执行干扰管理。

98. 发明申请

US20090248770A1 METHODS AND APPARATUS FOR REDUCING OR AVOIDING USE OF NON-SHIFT BASED DIVISIONS IN A COMMUNICATIONS DEVICE 有权
标题翻译：用于减少或避免在通信设备中使用非移位分区的方法和装置
公开(公告)号：US20090248770A1
公开(公告)日：2009-10-01
申请号：US12412340
申请日：2009-03-26
申请人： Siddharth Ray , Sundeep Rangan
发明人： Siddharth Ray , Sundeep Rangan
IPC分类号： G06F7/00 , G06F17/10 , G06F7/52
CPC分类号： G06F17/10 , H04L25/03006 , H04L2025/0342 , H04L2025/03426
摘要： Methods and apparatus which reduce or completely eliminate non-shift based divisions as part of estimating transmitted symbols and/or generating slicing parameters corresponding to two symbol transmission streams in a wireless communication system are described. A linear least squares error estimation filtering module performs symbol estimations and/or slicing parameter generation while avoiding non-shift based division operations. The linear least squares estimation module generates intermediate parameters, and implements equations which facilitate symbol estimation utilizing shift based divisions while avoiding non-shift based divisions.
摘要翻译：描述了作为在无线通信系统中估计传输符号和/或生成与两个符号传输流相对应的限幅参数的一部分来减少或完全消除基于非移位的部分的方法和装置。线性最小二乘误差估计滤波模块执行符号估计和/或限制参数生成，同时避免基于非移位的划分操作。线性最小二乘估计模块生成中间参数，并且实现方便符号估计的等式，利用基于移位的划分，同时避免基于非移位的划分。

99. 发明申请

US20080013521A1 Uplink access request in an OFDM communication environment 有权
标题翻译： OFDM通信环境中的上行链路接入请求
公开(公告)号：US20080013521A1
公开(公告)日：2008-01-17
申请号：US11486540
申请日：2006-07-14
申请人： Sundeep Rangan , Junyi Li
发明人： Sundeep Rangan , Junyi Li
IPC分类号： H04J3/06
CPC分类号： H04W56/0045 , H04L5/003 , H04L5/0078 , H04L5/0098
摘要： The claimed subject matter relates to acquiring channel access in a wireless communication environment. A wireless terminal may transmit first and second sets of tones over respective first and second contiguous transmission periods. The first and second tone sets may be disjoint from each other and may each comprise a number of contiguous tones. The terminal may then refrain from transmitting during a third time period in order to receive a grant signal from a base station in response to the access request. The beginnings of the first time period and the second time period may be a function of a determined uplink transmission time.
摘要翻译：所要求保护的主题涉及在无线通信环境中获取信道接入。无线终端可以在相应的第一和第二连续传输周期上传送第一和第二组音调。第一和第二音调集可以彼此不相交，并且可以各自包括多个连续的音调。然后终端可以在第三时间段期间避免发送，以便响应于接入请求从基站接收授权信号。第一时间段和第二时间段的开始可以是确定的上行链路传输时间的函数。

100. 发明授权

US08150345B2 Simplified interference suppression in multi-antenna receivers 有权
标题翻译：多天线接收机中的简化干扰抑制
公开(公告)号：US08150345B2
公开(公告)日：2012-04-03
申请号：US12413527
申请日：2009-03-28
申请人： Subhadeep P. Roy , Niranjan N. Ratnakar , Sundeep Rangan
发明人： Subhadeep P. Roy , Niranjan N. Ratnakar , Sundeep Rangan
IPC分类号： H04B17/02
CPC分类号： H04B7/0854 , H04B7/0417
摘要： A signal received via a plurality of antennas, and containing an interference component and a desired communication component, is processed to suppress the interference component. The interference component is suppressed based on an inverse of a spatial covariance matrix, which inverse is produced without performing a matrix inversion operation.
摘要翻译：处理经由多个天线接收并包含干扰成分和期望的通信部件的信号，以抑制干扰成分。基于空间协方差矩阵的逆，抑制干扰分量，而不执行矩阵求逆运算而产生反相。

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