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11. 发明授权

US08743843B2 Methods and apparatus relating to timing and/or synchronization including the use of wireless terminals beacon signals 有权
标题翻译：涉及定时和/或同步的方法和装置，包括使用无线终端信标信号
公开(公告)号：US08743843B2
公开(公告)日：2014-06-03
申请号：US11621957
申请日：2007-01-10
申请人： Rajiv Laroia , Sundeep Rangan , Arnab Das , Frank A. Lane , Junyi Li
发明人： Rajiv Laroia , Sundeep Rangan , Arnab Das , Frank A. Lane , Junyi Li
IPC分类号： H04J3/00
CPC分类号： H04W40/244 , H04J3/0602 , H04L5/0016 , H04L5/0035 , H04L5/0048 , H04L27/2601 , H04L27/261 , H04W8/005 , H04W16/14 , H04W28/04 , H04W28/18 , H04W36/16 , H04W36/24 , H04W40/24 , H04W48/08 , H04W48/16 , H04W48/20 , H04W52/0229 , H04W52/04 , H04W72/02 , H04W76/14 , H04W84/042 , H04W84/18 , H04W88/02 , H04W88/04 , H04W88/06 , H04W88/10 , Y02D70/1222 , Y02D70/1224 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/162 , Y02D70/164 , Y02D70/168 , Y02D70/22 , Y02D70/23
摘要： Wireless terminal beacon signaling is used to achieve timing synchronization between two wireless terminals in a wireless communication system, e.g., in an ad hoc network lacking a centralized timing reference. An exemplary timing structure used by an individual wireless terminal includes a beacon transmission time interval, a beacon monitoring time interval and a silence time interval. A first wireless terminal monitoring for beacon signals from other wireless terminals, detects a beacon signal portion from a second wireless terminal and determines a timing adjustment as a function of the detected beacon signal portion. The first wireless terminal applies the determined timing adjustment, e.g., time shifting its timing structure, such that its beacon signal can be detected by the second wireless terminal. Implementation of the determined timing adjustment sets the timing structures of the two wireless terminals to have a fixed relationship thereby allowing for coordinated communications including a peer-to-peer communications session.
摘要翻译：无线终端信标信令用于实现无线通信系统中的两个无线终端之间的定时同步，例如在缺乏集中定时参考的自组织网络中。单个无线终端使用的示例性定时结构包括信标发送时间间隔，信标监视时间间隔和静默时间间隔。监测来自其他无线终端的信标信号的第一无线终端从第二无线终端检测信标信号部分，并根据检测到的信标信号部分确定定时调整。第一无线终端应用确定的定时调整，例如时移其定时结构，使得其信标信号可被第二无线终端检测。确定的定时调整的实现将两个无线终端的定时结构设置为具有固定关系，从而允许包括对等通信会话的协调通信。

12. 发明申请

US20140134953A9 METHODS AND APPARATUS FOR GENERATING, COMMUNICATING, AND/OR USING INFORMATION RELATING TO SELF-NOISE 有权
标题翻译：用于生成，传播和/或使用与自发信息有关的信息的方法和装置
公开(公告)号：US20140134953A9
公开(公告)日：2014-05-15
申请号：US11333788
申请日：2006-01-17
申请人： Sundeep Rangan , Rajiv Laroia , Arnab Das , Junyi Li , John Fan
发明人： Sundeep Rangan , Rajiv Laroia , Arnab Das , Junyi Li , John Fan
IPC分类号： H04B1/00
CPC分类号： H04W24/10 , H04B17/24 , H04B17/336
摘要： A wireless terminal measures the received power of a tone corresponding to an intention base station null output, measures the received power of pilot signals, and determines a signal to noise ratio of the received pilot signal. The wireless terminal calculates a downlink signal to noise ratio saturation level representative of the SNR of a received downlink signal that the wireless terminal would measure on a received signal transmitted by the base station at infinite power. The calculated downlink signal to noise ratio saturation level is a function of the determined interference power, the measured received pilot signal power, and the determined pilot signal SNR. A report is generated corresponding to one of a plurality of quantized levels, the selected quantized level being the closest representation to the calculated downlink signal to noise ratio saturation level. The generated report is communicated using a dedicated control channel segment in a predetermined uplink timing structure.
摘要翻译：无线终端测量对应于意图基站空输出的音调的接收功率，测量导频信号的接收功率，并确定接收到的导频信号的信噪比。无线终端计算表示无线终端将以无限大功率发送的接收信号对接收到的下行链路信号的SNR进行SNR测量的下行链路信噪比饱和度。所计算的下行链路信噪比饱和电平是所确定的干扰功率，测量的接收导频信号功率和确定的导频信号SNR的函数。产生对应于多个量化电平中的一个的报告，所选择的量化电平是与所计算的下行链路信噪比饱和电平最接近的表示。使用专用控制信道段在预定的上行链路定时结构中传送所生成的报告。

13. 发明申请

US20070168326A1 Efficient reporting of information in a wireless communication system 有权
标题翻译：在无线通信系统中有效地报告信息
公开(公告)号：US20070168326A1
公开(公告)日：2007-07-19
申请号：US11486601
申请日：2006-07-14
申请人： Arnab Das , Sundeep Rangan , Pablo Anigstein , Junyi Li , Sathyadev Venkata Uppala , Rajiv Laroia
发明人： Arnab Das , Sundeep Rangan , Pablo Anigstein , Junyi Li , Sathyadev Venkata Uppala , Rajiv Laroia
IPC分类号： G06F17/30
CPC分类号： H04W24/10 , H04L1/0006 , H04L1/0026 , H04W24/00
摘要： Techniques for efficiently sending reports in a wireless communication system are described. Reports may be sent repetitively in accordance with a reporting format. A terminal receives an assignment of a control channel used to send reports and determines a reporting format to use based on the assignment. The reporting format indicates a specific sequence of reports sent in specific locations of a control channel frame. The terminal generates a set of reports for each reporting interval and arranges the set of reports in accordance with the reporting format. The terminal repetitively sends a plurality of sets of reports in a plurality of reporting intervals. Reports may also be sent adaptively based on operating conditions. An appropriate reporting format may be selected based on the operating conditions of the terminal, which may be characterized by environment (e.g., mobility), capabilities, QoS, and/or other factors.
摘要翻译：描述在无线通信系统中有效地发送报告的技术。可以按照报告格式重复发送报告。终端接收用于发送报告的控制信道的分配，并根据分配确定要使用的报告格式。报告格式指示在控制信道帧的特定位置发送的特定报告序列。终端为每个报告间隔生成一组报告，并根据报告格式安排报告集。终端在多个报告间隔重复发送多组报告。报告也可以根据操作条件自适应地发送。可以基于可以由环境（例如，移动性），能力，QoS和/或其他因素来表征的终端的操作条件来选择适当的报告格式。

14. 发明授权

US08503938B2 Methods and apparatus for determining, communicating and using information including loading factors which can be used for interference control purposes 有权
标题翻译：用于确定，通信和使用信息的方法和装置，包括可用于干扰控制目的的负载因子
公开(公告)号：US08503938B2
公开(公告)日：2013-08-06
申请号：US11487017
申请日：2006-07-14
申请人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Prashanth Hande , Arnab Das
发明人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Prashanth Hande , Arnab Das
IPC分类号： H04B15/00
CPC分类号： H04W24/08 , H04B17/345 , H04B17/382 , H04W72/08
摘要： A wireless terminal receives and measures broadcast reference signals, e.g., beacon and/or pilot signals, transmitted from a plurality of base station attachment points. The wireless terminal monitors for and attempts to recover broadcast loading factor information corresponding to attachment points. The wireless terminal generates and transmits an interference report to a current attachment point, the report based on the results of a measured received reference signal from the current attachment point, a measured received reference signal from each of one or more different attachment points, and uplink loading factor information. In the absence of a successfully recovered broadcast uplink loading factor corresponding to an attachment point, the wireless terminal uses a default value for that loading factor. Generated interference reports are based on beacon signal measurements and uplink loading factors, pilot signal measurements and uplink loading factors, or a mixture of beacon and pilot signal measurements and uplink loading factors.
摘要翻译：无线终端接收并测量从多个基站附接点发送的广播参考信号，例如信标和/或导频信号。无线终端监视并尝试恢复对应于附接点的广播加载因子信息。无线终端根据来自当前附着点的测定的接收到的参考信号的结果，来自一个或多个不同的附接点的每一个的测量的接收参考信号以及上行链路加载因子信息。在没有对应于附接点的成功恢复的广播上行链路负载因子的情况下，无线终端使用该负载因子的默认值。生成的干扰报告基于信标信号测量和上行链路负载因子，导频信号测量和上行链路负载因子，或信标和导频信号测量和上行链路负载因子的混合。

15. 发明申请

US20070104164A1 Methods and apparatus for determining, communicating and using information including loading factors which can be used for interference control purposes 有权
标题翻译：用于确定，通信和使用信息的方法和装置，包括可用于干扰控制目的的负载因子
公开(公告)号：US20070104164A1
公开(公告)日：2007-05-10
申请号：US11487017
申请日：2006-07-14
申请人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Prashanth Hande , Arnab Das
发明人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Prashanth Hande , Arnab Das
IPC分类号： H04Q7/24
CPC分类号： H04W24/08 , H04B17/345 , H04B17/382 , H04W72/08
摘要： A wireless terminal receives and measures broadcast reference signals, e.g., beacon and/or pilot signals, transmitted from a plurality of base station attachment points. The wireless terminal monitors for and attempts to recover broadcast loading factor information corresponding to attachment points. The wireless terminal generates and transmits an interference report to a current attachment point, the report based on the results of a measured received reference signal from the current attachment point, a measured received reference signal from each of one or more different attachment points, and uplink loading factor information. In the absence of a successfully recovered broadcast uplink loading factor corresponding to an attachment point, the wireless terminal uses a default value for that loading factor. Generated interference reports are based on beacon signal measurements and uplink loading factors, pilot signal measuereents and uplink loading factors, or a mixture of beacon and pilot signal measurements and uplink loading factors.
摘要翻译：无线终端接收并测量从多个基站附接点发送的广播参考信号，例如信标和/或导频信号。无线终端监视并尝试恢复对应于附接点的广播加载因子信息。无线终端根据来自当前附着点的测定的接收到的参考信号的结果，来自一个或多个不同的附接点的每一个的测量的接收参考信号以及上行链路加载因子信息。在没有对应于附接点的成功恢复的广播上行链路负载因子的情况下，无线终端使用该负载因子的默认值。生成的干扰报告基于信标信号测量和上行链路负载因子，导频信号测量和上行链路负载因子，或信标和导频信号测量和上行链路负载因子的混合。

16. 发明申请

US20060099915A1 Methods and apparatus of providing transmit and/or receive diversity with multiple antennas in wireless communication systems 有权
公开(公告)号：US20060099915A1
公开(公告)日：2006-05-11
申请号：US11284285
申请日：2005-11-21
申请人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Frank Lane , Prashanth Hande
发明人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Frank Lane , Prashanth Hande
IPC分类号： H04B7/00
CPC分类号： H04B7/0604 , H01Q3/24 , H01Q3/2605 , H04B7/061 , H04B7/0691 , H04B7/0805 , H04L1/0026 , H04L5/0007 , H04L5/0023 , H04L5/0026 , H04L5/006 , H04W52/42
摘要： Transmit and/or receive diversity is achieved using multiple antennas. In some embodiments, a single transmitter chain within a wireless terminal is coupled over time to a plurality of transmit antennas. At any given time, a controllable switching module couples the single transmitter chain to one the plurality of transmit antennas. Over time, the switching module couples the output signals from the single transmitter chain to different transmit antennas. Switching decisions are based upon predetermined information, dwell information, and/or channel condition feedback information. Switching is performed on some dwell and/or channel estimation boundaries. In some OFDM embodiments, each of multiple transmitter chains is coupled respectively to a different transmit antenna. Information to be transmitted is mapped to a plurality of tones. Different subsets of tones are formed for and transmitted through different transmit chain/antenna sets simultaneously. The balance of tones allocated to the subsets for each antenna are changed as a function of predetermined information, dwell information, and/or channel condition feedback information.

17. 发明申请

US20050085197A1 Methods and apparatus of providing transmit and/or receive diversity with multiple antennas in wireless communication systems 有权
标题翻译：在无线通信系统中提供与多个天线的发射和/或接收分集的方法和装置
公开(公告)号：US20050085197A1
公开(公告)日：2005-04-21
申请号：US10964885
申请日：2004-10-14
申请人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Frank Lane , Prashanth Hande
发明人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Frank Lane , Prashanth Hande
IPC分类号： H04B7/005 , H04B7/06 , H04B7/08 , H04L1/00 , H04W52/42 , H04B1/02 , H03C7/02 , H04B7/02 , H04B7/10 , H04L1/02
CPC分类号： H04B7/0604 , H01Q3/24 , H01Q3/2605 , H04B7/061 , H04B7/0691 , H04B7/0805 , H04L1/0026 , H04L5/0007 , H04L5/0023 , H04L5/0026 , H04L5/006 , H04W52/42
摘要： Transmit and/or receive diversity is achieved using multiple antennas. In some embodiments, a single transmitter chain within a wireless terminal is coupled over time to a plurality of transmit antennas. At any given time, a controllable switching module couples the single transmitter chain to one the plurality of transmit antennas. Over time, the switching module couples the output signals from the single transmitter chain to different transmit antennas. Switching decisions are based upon predetermined information, dwell information, and/or channel condition feedback information. Switching is performed on some dwell and/or channel estimation boundaries. In some OFDM embodiments, each of multiple transmitter chains is coupled respectively to a different transmit antenna. Information to be transmitted is mapped to a plurality of tones. Different subsets of tones are formed for and transmitted through different transmit chain/antenna sets simultaneously. The balance of tones allocated to the subsets for each antenna are changed as a function of predetermined information, dwell information, and/or channel condition feedback information.
摘要翻译：使用多个天线实现发射和/或接收分集。在一些实施例中，无线终端内的单个发射机链随时间耦合到多个发射天线。在任何给定时间，可控开关模块将单个发射机链耦合到多个发射天线中的一个。随着时间的推移，开关模块将来自单个发射机链的输出信号耦合到不同的发射天线。切换决定基于预定信息，停留信息和/或信道条件反馈信息。在一些驻留和/或信道估计边界上执行切换。在一些OFDM实施例中，多个发射机链中的每一个分别耦合到不同的发射天线。要发送的信息被映射到多个音调。为不同的发射链/天线组同时形成和发送不同的音调子集。分配给每个天线的子集的音调的平衡作为预定信息，停留信息和/或信道条件反馈信息的函数而改变。

18. 发明授权

US07567791B2 Wireless terminal methods and apparatus for use in a wireless communications system that uses a multi-mode base station 有权
标题翻译：用于使用多模式基站的无线通信系统中的无线终端方法和装置
公开(公告)号：US07567791B2
公开(公告)日：2009-07-28
申请号：US11229847
申请日：2005-09-19
申请人： Rajiv Laroia , Pablo Anigstein , Arnab Das , Sundeep Rangan
发明人： Rajiv Laroia , Pablo Anigstein , Arnab Das , Sundeep Rangan
IPC分类号： H04B1/16
CPC分类号： H04W52/0235 , H04W52/0206 , Y02D70/00
摘要： Wireless terminal for use with a multi-mode base station that supports a transmit standby mode and an active mode is described. Transmit standby mode of base station operation is a low power/low interference level of operation as compared to active mode. In transmit standby mode at least some of the synchronization signaling such as pilot tone signaling is reduced in power level and/or rate with respect to the active mode. In transmit standby mode, the base station has no active state registered wireless terminals being serviced but may have some sleep state registered wireless terminals being serviced. Mode transitions from active to transmit standby may be in response to: a detected period of inactivity, scheduling information, base station mode change signals, and/or detected wireless terminal state transition. Mode transitions from transmit standby to active may be in response to: scheduling information, access signals, wake-up signals from the wireless terminal, hand-off signals, etc.
摘要翻译：描述了与支持发送待机模式和活动模式的多模式基站一起使用的无线终端。与主动模式相比，基站操作的发送待机模式是低功耗/低干扰电平。在发送待机模式中，诸如导频音调信令的至少一些同步信令相对于活动模式降低功率电平和/或速率。在发送待机模式中，基站没有被激活状态登记的无线终端被服务，但是可能有一些睡眠状态登记的无线终端被维护。模式从有效切换到发送备用的转换可以是：检测到的不活动时段，调度信息，基站模式改变信号和/或检测到的无线终端状态转换。从发射待机到激活的模式转换可以响应于：调度信息，接入信号，来自无线终端的唤醒信号，切换信号等。

19. 发明授权

US08340703B2 Methods and apparatus for use in a wireless communications system that uses a multi-mode base station 有权
标题翻译：在使用多模式基站的无线通信系统中使用的方法和装置
公开(公告)号：US08340703B2
公开(公告)日：2012-12-25
申请号：US12833318
申请日：2010-07-09
申请人： Rajiv Laroia , Pablo Anigstein , Arnab Das , Sundeep Rangan
发明人： Rajiv Laroia , Pablo Anigstein , Arnab Das , Sundeep Rangan
IPC分类号： H04B15/00
CPC分类号： H04W56/00 , H04B7/2678 , H04L5/0007 , H04L5/0048 , H04L5/0053 , H04W52/0206 , H04W72/1278 , Y02D70/449
摘要： A multi-mode base station includes a transmit standby mode and an active mode. Transmit standby mode of base station operation is a low power/low interference level of operation as compared to active mode. In transmit standby mode at least some of the synchronization signaling such as pilot tone signaling is reduced in power level and/or rate with respect to the active mode. In transmit standby mode, the base station has no active state registered wireless terminals being serviced but may have some sleep state registered wireless terminals being serviced. Mode transitions from active to transmit standby may be in response to: a detected period of inactivity, scheduling information, base station mode change signals, and/or detected wireless terminal state transition. Mode transitions from transmit standby to active may be in response to: scheduling information, access signals, wake-up signals, hand-off signals, wireless terminal state change signals, and/or base station mode change signals.
摘要翻译：多模式基站包括发送待机模式和活动模式。与主动模式相比，基站操作的发送待机模式是低功耗/低干扰电平。在发送待机模式中，诸如导频音调信令的至少一些同步信令相对于活动模式降低功率电平和/或速率。在发送待机模式中，基站没有被激活状态登记的无线终端被服务，但是可能有一些睡眠状态登记的无线终端被维护。模式从有效切换到发送备用的转换可以是：检测到的不活动时段，调度信息，基站模式改变信号和/或检测到的无线终端状态转换。从发射待机状态转换为有效的模式可以响应于：调度信息，接入信号，唤醒信号，切换信号，无线终端状态改变信号和/或基站模式改变信号。

20. 发明申请

US20110085611A1 METHODS AND APPARATUS FOR USE IN A WIRELESS COMMUNICATIONS SYSTEM THAT USES A MULTI-MODE BASE STATION 有权
标题翻译：在采用多模式基站的无线通信系统中使用的方法和装置
公开(公告)号：US20110085611A1
公开(公告)日：2011-04-14
申请号：US12833318
申请日：2010-07-09
申请人： Rajiv Laroia , Pablo A. Anigstein , Arnab Das , Sundeep Rangan
发明人： Rajiv Laroia , Pablo A. Anigstein , Arnab Das , Sundeep Rangan
IPC分类号： H04W40/00 , H04J11/00
CPC分类号： H04W56/00 , H04B7/2678 , H04L5/0007 , H04L5/0048 , H04L5/0053 , H04W52/0206 , H04W72/1278 , Y02D70/449
摘要： A multi-mode base station includes a transmit standby mode and an active mode. Transmit standby mode of base station operation is a low power/low interference level of operation as compared to active mode. In transmit standby mode at least some of the synchronization signaling such as pilot tone signaling is reduced in power level and/or rate with respect to the active mode. In transmit standby mode, the base station has no active state registered wireless terminals being serviced but may have some sleep state registered wireless terminals being serviced. Mode transitions from active to transmit standby may be in response to: a detected period of inactivity, scheduling information, base station mode change signals, and/or detected wireless terminal state transition. Mode transitions from transmit standby to active may be in response to: scheduling information, access signals, wake-up signals, hand-off signals, wireless terminal state change signals, and/or base station mode change signals.
摘要翻译：多模式基站包括发送待机模式和活动模式。与主动模式相比，基站操作的发送待机模式是低功耗/低干扰电平。在发送待机模式中，诸如导频音调信令的至少一些同步信令相对于活动模式降低功率电平和/或速率。在发送待机模式中，基站没有被激活状态登记的无线终端被服务，但是可能有一些睡眠状态登记的无线终端被维护。模式从有效切换到发送备用的转换可以是：检测到的不活动时段，调度信息，基站模式改变信号和/或检测到的无线终端状态转换。从发射待机状态转换为有效的模式可以响应于：调度信息，接入信号，唤醒信号，切换信号，无线终端状态改变信号和/或基站模式改变信号。

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