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91. 发明授权

US06920192B1 Adaptive antenna array methods and apparatus for use in a multi-access wireless communication system 有权
标题翻译：用于多址无线通信系统的自适应天线阵列方法和装置
公开(公告)号：US06920192B1
公开(公告)日：2005-07-19
申请号：US09631805
申请日：2000-08-03
申请人： Rajiv Laroia , Sundeep Rangan
发明人： Rajiv Laroia , Sundeep Rangan
IPC分类号： H01Q3/26 , H04B7/08 , H04B7/26 , H04L1/06
CPC分类号： H04B7/0854
摘要： Adaptive antenna array techniques for use in an orthogonal frequency division multiplexed spread-spectrum multi-access (OFDM-SSMA) cellular wireless system or other type of wireless communication system. A base station of the system includes an antenna array and a base station receiver. The base station receiver implements an adaptive antenna gain algorithm which estimates a spatial covariance matrix for each of K mobile stations communicating with the base station. The spatial covariance matrix for a given one of the mobile stations is determined at least in part based on a unique hopping sequence of the mobile station, and provides a correlation between signals received from the mobile station at different antenna elements within the antenna array. An average spatial covariance matrix for a set of received signals is also generated. The individual spatial covariance matrices and the average spatial covariance matrix are processed to generate an estimate of an interference matrix for the K mobile stations, and the estimate of the interference matrix is further processed to generate array responses for each of the mobile stations. The array response for a given mobile station is processed to determine an antenna weighting which is applied to a signal received from the given mobile station in order to facilitate detection of a corresponding transmitted symbol.
摘要翻译：用于正交频分复用扩频多址（OFDM-SSMA）蜂窝无线系统或其他类型无线通信系统的自适应天线阵列技术。系统的基站包括天线阵列和基站接收机。基站接收机实现自适应天线增益算法，其估计与基站通信的K个移动站中的每一个的空间协方差矩阵。至少部分地基于移动台的唯一跳频序列来确定给定一个移动站的空间协方差矩阵，并且提供在天线阵列内的不同天线元件处从移动站接收的信号之间的相关性。还产生一组接收信号的平均空间协方差矩阵。处理单个空间协方差矩阵和平均空间协方差矩阵以产生K个移动站的干扰矩阵的估计，并且对干扰矩阵的估计被进一步处理以产生每个移动站的阵列响应。处理给定移动站的阵列响应被处理以确定施加到从给定移动台接收的信号的天线加权，以便于检测相应的发送符号。

92. 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。

93. 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。

94. 发明申请

US20110075639A1 UPLINK ACCESS REQUEST IN AN OFDM COMMUNICATION ENVIRONMENT 有权
标题翻译： OFDM通信环境中的UPLINK接入请求
公开(公告)号：US20110075639A1
公开(公告)日：2011-03-31
申请号：US12958676
申请日：2010-12-02
申请人： Sundeep Rangan , Junyi Li
发明人： Sundeep Rangan , Junyi Li
IPC分类号： H04W72/04 , 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。

95. 发明授权

US09014134B2 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：US09014134B2
公开(公告)日：2015-04-21
申请号：US12958676
申请日：2010-12-02
申请人： Sundeep Rangan , Junyi Li
发明人： Sundeep Rangan , Junyi Li
IPC分类号： H04W4/00 , H04J3/00 , H04J3/06 , H04W56/00 , H04L5/00
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。

96. 发明授权

US08432852B2 Uplink timing control signal 有权
标题翻译：上行定时控制信号
公开(公告)号：US08432852B2
公开(公告)日：2013-04-30
申请号：US11486652
申请日：2006-07-14
申请人： Sundeep Rangan , Junyi Li
发明人： Sundeep Rangan , Junyi Li
IPC分类号： H04W4/00
CPC分类号： H04W56/0005 , H04L5/0051 , H04L27/2655 , H04W56/0075
摘要： The claimed subject matter relates to systems and methodologies for synchronizing timing between a base station and a wireless terminal. For example, a set of non-contiguous tones may be assigned to the terminal, and may be equally spaced apart from each other across a spectrum of all available tones. A set of contiguous tones may also be assigned to the terminal, which may transmit a timing control signal during a specified transmit time. A base station may receive the signal, which comprises information related to the non-contiguous and contiguous tone sets, and may determine a distance of the terminal to the base station based on measured and anticipated arrival time of the signal. The base station may transmit a timing correction command signal to the terminal based on such information.
摘要翻译：所要求保护的主题涉及用于在基站和无线终端之间同步定时的系统和方法。例如，可以将一组非连续音调分配给终端，并且可以在所有可用音调的频谱上彼此相等间隔开。一组连续的音调也可以被分配给终端，其可以在指定的发送时间期间发送定时控制信号。基站可以接收信号，该信号包括与非连续和连续音调集相关的信息，并且可以基于信号的测量和预期到达时间来确定终端与基站的距离。基站可以基于这样的信息向终端发送定时校正命令信号。

97. 发明申请

US20080013478A1 Uplink timing control signal 有权
标题翻译：上行定时控制信号
公开(公告)号：US20080013478A1
公开(公告)日：2008-01-17
申请号：US11486652
申请日：2006-07-14
申请人： Sundeep Rangan , Junyi Li
发明人： Sundeep Rangan , Junyi Li
IPC分类号： H04Q7/00
CPC分类号： H04W56/0005 , H04L5/0051 , H04L27/2655 , H04W56/0075
摘要： The claimed subject matter relates to systems and methodologies for synchronizing timing between a base station and a wireless terminal. For example; a set of non-contiguous tones may be assigned to the terminal, and may be equally spaced apart from each other across a spectrum of all available tones. A set of contiguous tones may also be assigned to the terminal, which may transmit a timing control signal during a specified transmit time. A base station may receive the signal, which comprises information related to the non-contiguous and contiguous tone sets, and may determine a distance of the terminal to the base station based on measured and anticipated arrival time of the signal. The base station may transmit a timing correction command signal to the terminal based on such information.
摘要翻译：所要求保护的主题涉及用于在基站和无线终端之间同步定时的系统和方法。例如; 可以将一组非连续音调分配给终端，并且可以在所有可用音调的频谱上彼此相等间隔开。一组连续的音调也可以被分配给终端，其可以在指定的发送时间期间发送定时控制信号。基站可以接收包括与非连续和连续的音调集相关的信息的信号，并且可以基于信号的测量和预期的到达时间来确定终端与基站的距离。基站可以基于这样的信息向终端发送定时校正命令信号。

98. 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。

99. 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。

100. 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。

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