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1. 发明申请

US20050036441A1 Methods and apparatus of power control in wireless communication systems 失效
标题翻译：无线通信系统中功率控制的方法和装置
公开(公告)号：US20050036441A1
公开(公告)日：2005-02-17
申请号：US10641308
申请日：2003-08-13
申请人： Rajiv Laroia , Junyi Li , John Fan , Sundeep Rangan , Prashanth Hande
发明人： Rajiv Laroia , Junyi Li , John Fan , Sundeep Rangan , Prashanth Hande
IPC分类号： H04B7/00 , H04B7/005 , H04J11/00 , H04L27/26 , H04L27/36
CPC分类号： H04W52/08 , H04L27/2608 , H04L27/362 , H04W52/56 , H04W52/60
摘要： The present invention involves apparatus and methods to perform wireless terminal transmission power control. The invention uses novel and highly efficient methods to: convey power control information, specify power control level adjustments, recognize power control information, limit interference in the power control signaling, and recognize corrupted power control signaling, thus conserving wireless terminal energy and minimizing power control signaling and associated bandwidth. Base stations send analog power control command signals, with a continuous range of control levels, to wireless terminals for transmission power adjustments. Power control signals include two components which can be used to convey information, e.g., power control commands, signal quality, device identity information. For zero power adjustment, the control component signal is not transmitted. For a non-zero adjustment, power control signals are sent using control ranges and limits, known to the base station and wireless terminal, with the scaling adjusted or synchronized based upon feedback information.
摘要翻译：本发明涉及执行无线终端传输功率控制的装置和方法。本发明使用新颖且高效的方法：传送功率控制信息，指定功率控制电平调整，识别功率控制信息，限制功率控制信令中的干扰，并识别损坏的功率控制信令，从而节省无线终端能量并最小化功率控制信令和相关带宽。基站向无线终端发送模拟功率控制命令信号，具有连续的控制级别，用于传输功率调整。功率控制信号包括可用于传送信息的两个组件，例如功率控制命令，信号质量，设备身份信息。对于零功率调整，控制分量信号不发送。对于非零调整，功率控制信号使用基站和无线终端已知的控制范围和限制，基于反馈信息进行缩放调整或同步。

2. 发明授权

US08571493B2 Methods and apparatus of providing transmit and/or receive diversity with multiple antennas in wireless communication systems 有权
公开(公告)号：US08571493B2
公开(公告)日：2013-10-29
申请号：US12606079
申请日：2009-10-26
申请人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Frank A. Lane , Prashanth Hande
发明人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Frank A. Lane , Prashanth Hande
IPC分类号： H04B7/06
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.

3. 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。

4. 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。

5. 发明申请

US20100190514A1 EFFICIENT PAGING IN A WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：无线通信系统中的高效寻呼
公开(公告)号：US20100190514A1
公开(公告)日：2010-07-29
申请号：US12751961
申请日：2010-03-31
申请人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Prashanth Hande
发明人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Prashanth Hande
IPC分类号： H04W68/02
CPC分类号： H04W68/025 , Y02D70/00
摘要： Methods and apparatus for efficient two-stage paging wireless communications systems are described. Wireless terminals are assigned to paging groups. A few first paging message information bits are modulated (using non-coherent modulation) into a first paging signal and communicated from a base station to wireless terminals. WTs wake-up, receive the first paging signal and quickly ascertain whether its paging group should expect a second paging signal, if so, the WT is operated to receive the second paging signal; otherwise, the WT goes back to sleep conserving power. The base station modulates (using coherent modulation) a number of second message information bits into a second paging signal and transmits the signal to WTs. From the information in first and second paging signals, a WT can determine that it is the paged WT and process the paging instructions. The intended paged WT can transmit an acknowledgement signal on a dedicated uplink resource.
摘要翻译：描述了用于有效的两阶段寻呼无线通信系统的方法和装置。无线终端被分配给寻呼组。几个第一寻呼消息信息比特被调制（使用非相干调制）到第一寻呼信号中并从基站传送到无线终端。 WT唤醒，接收第一个寻呼信号，并快速确定其寻呼组是否应该预期第二个寻呼信号，如果是，则操作WT接收第二寻呼信号; 否则，WT回去睡眠节省电力。基站将多个第二消息信息比特（使用相干调制）调制成第二寻呼信号，并将该信号发送给WT。根据第一和第二寻呼信号中的信息，WT可以确定它是寻呼WT并处理寻呼指令。预期的寻呼WT可以在专用上行链路资源上发送确认信号。

6. 发明授权

US07039370B2 Methods and apparatus of providing transmit and/or receive diversity with multiple antennas in wireless communication systems 有权
公开(公告)号：US07039370B2
公开(公告)日：2006-05-02
申请号：US10964885
申请日：2004-10-14
申请人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Frank A. Lane , Prashanth Hande
发明人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Frank A. Lane , Prashanth Hande
IPC分类号： H04B7/02
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.

7. 发明授权

US08712448B2 Efficient paging in a wireless communication system 有权
公开(公告)号：US08712448B2
公开(公告)日：2014-04-29
申请号：US12751961
申请日：2010-03-31
申请人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Prashanth Hande
发明人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Prashanth Hande
IPC分类号： H04W68/00
CPC分类号： H04W68/025 , Y02D70/00
摘要： Methods and apparatus for efficient two-stage paging wireless communications systems are described. Wireless terminals are assigned to paging groups. A few first paging message information bits are modulated (using non-coherent modulation) into a first paging signal and communicated from a base station to wireless terminals. WTs wake-up, receive the first paging signal and quickly ascertain whether its paging group should expect a second paging signal, if so, the WT is operated to receive the second paging signal; otherwise, the WT goes back to sleep conserving power. The base station modulates (using coherent modulation) a number of second message information bits into a second paging signal and transmits the signal to WTs. From the information in first and second paging signals, a WT can determine that it is the paged WT and process the paging instructions. The intended paged WT can transmit an acknowledgement signal on a dedicated uplink resource.

8. 发明授权

US08514692B2 Methods and apparatus for determining, communicating and using information which can be used for interference control purposes 有权
标题翻译：用于确定，通信和使用可用于干扰控制目的的信息的方法和装置
公开(公告)号：US08514692B2
公开(公告)日：2013-08-20
申请号：US11251069
申请日：2005-10-14
申请人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Prashanth Hande
发明人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Prashanth Hande
IPC分类号： H04J11/00 , H04B1/00
CPC分类号： H04B1/7103 , H04B1/7097 , H04B7/022 , H04B17/24 , H04B17/318 , H04B17/345 , H04B2201/70701 , H04B2201/70702 , H04L5/023
摘要： Methods and apparatus for collecting, measuring, reporting and/or using information which can be used for interference control purposes. Wireless terminals measure signals transmitted from one or more base stations, e.g., base station sector transmitters. The measured signals may be, e.g., beacon signals and/or pilot signals. From the measured signals, the wireless terminal generates one or more gain ratios which provide information about the relative gain of the communications channels from different base station sectors to the wireless terminal. This information represents interference information since it provides information about the signal interference that will be caused by transmissions from other base station sectors relative to transmissions made by the base station sector to which the wireless terminal is attached. Based on the signal energy measurements and relative gains generated from the energy measures, reports are generated in accordance with the invention and sent to one or more base stations.
摘要翻译：用于收集，测量，报告和/或使用可用于干扰控制目的的信息的方法和装置。无线终端测量从一个或多个基站（例如，基站扇区发射机）发射的信号。所测量的信号可以是例如信标信号和/或导频信号。从所测量的信号中，无线终端产生一个或多个增益比，其提供关于来自不同基站扇区到无线终端的通信信道的相对增益的信息。该信息表示干扰信息，因为它提供了关于由来自其他基站扇区的相对于由无线终端所附接的基站扇区所做的传输而引起的信号干扰的信息。基于从能量测量产生的信号能量测量和相对增益，根据本发明生成报告并发送到一个或多个基站。

9. 发明申请

US20100178942A1 EFFICIENT PAGING IN A WIRELESS COMMUNICATION SYSTEM 有权
公开(公告)号：US20100178942A1
公开(公告)日：2010-07-15
申请号：US12730154
申请日：2010-03-23
申请人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Prashanth Hande
发明人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Prashanth Hande
IPC分类号： H04W68/02
CPC分类号： H04W68/025 , Y02D70/00
摘要： Methods and apparatus for efficient two-stage paging wireless communications systems are described. Wireless terminals are assigned to paging groups. A few first paging message information bits are modulated (using non-coherent modulation) into a first paging signal and communicated from a base station to wireless terminals. WTs wake-up, receive the first paging signal and quickly ascertain whether its paging group should expect a second paging signal, if so, the WT is operated to receive the second paging signal; otherwise, the WT goes back to sleep conserving power. The base station modulates (using coherent modulation) a number of second message information bits into a second paging signal and transmits the signal to WTs. From the information in first and second paging signals, a WT can determine that it is the paged WT and process the paging instructions. The intended paged WT can transmit an acknowledgement signal on a dedicated uplink resource.

10. 发明授权

US07610024B2 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：US07610024B2
公开(公告)日：2009-10-27
申请号：US11284285
申请日：2005-11-21
申请人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Frank A. Lane , Prashanth Hande
发明人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Frank A. Lane , Prashanth Hande
IPC分类号： H04B7/06
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。

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