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71. 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。

72. 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。

73. 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。

74. 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。

75. 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。

76. 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。

77. 发明授权

US09838365B2 Peer to peer identifiers 有权
公开(公告)号：US09838365B2
公开(公告)日：2017-12-05
申请号：US12147967
申请日：2008-06-27
申请人： Vincent D. Park , Rajiv Laroia , Junyi Li
发明人： Vincent D. Park , Rajiv Laroia , Junyi Li
IPC分类号： H04L29/06 , H04L9/08 , H04W12/04 , H04W8/26 , H04W8/00 , H04W48/08 , H04W92/18
CPC分类号： H04L63/061 , H04L9/0866 , H04L9/0872 , H04L63/0846 , H04L63/0876 , H04W8/005 , H04W8/26 , H04W12/04 , H04W48/08 , H04W92/18
摘要： In an ad hoc peer-to-peer type network during peer discovery, information relating to users of various devices is broadcast to other devices in the network, which can compromise privacy of the users. Instead of announcing a public identifier that might be known by a multitude of individuals, the user device announces a private identifier that might be known to, or determined by, a select few individuals. The individuals selected can be given a key to determine the private identifier associated with a public identifier, or vice versa, wherein that key can have a validity range or a period of time, after which the key expires. Prior to the expiration of the key, the selected individuals, through their respective devices, can detect a corresponding user and/or device by the current private identifier being announced, thus mitigating the number of people that are aware of the user's presence.

78. 发明授权

US09787777B2 Methods and apparatus for wireless communications including direct paging in combination with hopped data signaling 有权
公开(公告)号：US09787777B2
公开(公告)日：2017-10-10
申请号：US12047713
申请日：2008-03-13
申请人： Junyi Li , Rajiv Laroia , Vincent D. Park , Thomas Richardson , Saurabh Tavildar , Xinzhou Wu
发明人： Junyi Li , Rajiv Laroia , Vincent D. Park , Thomas Richardson , Saurabh Tavildar , Xinzhou Wu
IPC分类号： H04L12/28 , H04L29/08 , H04W4/02 , H04W68/00 , H04W40/24
CPC分类号： H04L67/16 , H04L67/18 , H04W4/02 , H04W4/021 , H04W40/246 , H04W68/00 , Y02D30/40 , Y02D70/00 , Y02D70/20
摘要： Methods and apparatus for wireless communications in regional networks, e.g., ad hoc peer to peer networks, are described. Wireless communications devices transmit and monitor for presence indicator signals broadcast from other peer communications devices in its local vicinity. A wireless communications device maintains a list of discovered devices in its vicinity. A first wireless communications device transmits a paging signal directly over an airlink to a second communications device, which is on its list and to which it desires to send data units, e.g., user data in a peer to peer traffic segment. In response to a received paging response signal from the second device, the first device transmits data units, intended for the second device, to a third device, which acts as an intermediary node. The power level for the data unit signal is controlled to be lower than the power level used for the paging signal. FIG. 4

79. 发明授权

US09544860B2 Pilot signals for use in multi-sector cells 有权
标题翻译：用于多扇区单元的导频信号
公开(公告)号：US09544860B2
公开(公告)日：2017-01-10
申请号：US10648767
申请日：2003-08-25
申请人： Rajiv Laroia , John L. Fan , Junyi Li
发明人： Rajiv Laroia , John L. Fan , Junyi Li
IPC分类号： H04W52/04 , H04B15/00 , H04W52/32 , H04B7/04 , H04W16/24 , H04W52/24 , H04B17/24 , H04B17/309
CPC分类号： H04W52/325 , H04B7/0491 , H04B17/24 , H04B17/309 , H04W16/24 , H04W52/24
摘要： Pilot signal transmission sequences and methods for use in a multi-sector cell. Pilots in different sectors are transmitted at different known power levels. In adjacent sectors a pilot is transmitted while no pilot is transmitted in the adjoining sector. This represents transmission of a NULL pilot signal. A cell NULL is also supported in which NULL pilots are transmitted in each sector of a cell at the same time. Multiple pilot signal measurements are made. At least two channel quality indicator values are generated from measurements corresponding to at least two pilot signals of different power levels. The two values are transmitted back to the base station which uses both values to determine the transmit power requited to achieve a desired SNR at the wireless terminal. The wireless terminal also reports information indicating its location to a sector boundary.
摘要翻译：导频信号传输序列和用于多扇区小区的方法。不同扇区的飞行员以不同的已知功率水平传输。在相邻扇区中，在相邻扇区中没有发送导频的情况下发送导频。这表示空导频信号的传输。还支持单元空白，其中NULL导频在单元的每个扇区中同时被发送。进行多个导频信号测量。至少两个信道质量指标值是从对应于不同功率电平的至少两个导频信号的测量产生的。这两个值被发送回基站，其使用两个值来确定在无线终端处实现期望的SNR所需的发射功率。无线终端还向扇区边界报告指示其位置的信息。

80. 发明授权

US09426012B2 Signaling method in an OFDM multiple access system 有权
公开(公告)号：US09426012B2
公开(公告)日：2016-08-23
申请号：US13619460
申请日：2012-09-14
申请人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
发明人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
IPC分类号： H04L27/26 , H04L5/02
CPC分类号： H04L5/0007 , H04L5/023 , H04L27/2602 , H04L27/2614 , H04L27/2636
摘要： A method for reducing the peak-to-average ratio in an OFDM communication signal is provided. The method includes defining a constellation having a plurality of symbols, defining a symbol duration for the OFDM communication signal, and defining a plurality of time instants in the symbol duration. A plurality of tones are allocated to a particular communication device, and a discrete signal is constructed in the time domain by mapping symbols from the constellation to the time instants. A continuous signal is generated by applying an interpolation function to the discrete signal such that the continuous signal only includes sinusoids having frequencies which are equal to the allocated tones.

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