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    Beam wobbling for increased downlink coverage and capacity
    1.
    发明授权
    Beam wobbling for increased downlink coverage and capacity 有权
    波束摆动增加下行链路的覆盖和容量

    公开(公告)号：US08655410B2

    公开(公告)日：2014-02-18

    申请号：US13288551

    申请日：2011-11-03

    申请人： Nimal Gamini Senarath ,  Yoon Chae Cheong ,  Shalini Periyalwar ,  Robert Matyas

    发明人： Nimal Gamini Senarath ,  Yoon Chae Cheong ,  Shalini Periyalwar ,  Robert Matyas

    IPC分类号： H04M1/00

    CPC分类号： H04W16/28 ,  H04B7/0604 ,  H04B7/0695 ,  H04W16/02 ,  H04W16/12

    摘要： A method and apparatus for reducing signal interference within a cellular radio system to increase both coverage and capacity. The method and apparatus include altering the direction of beams within cell sectors is among discrete angular positions according to a predetermined, cyclic pattern. The predetermined, cyclic pattern varies in a group of adjacent cell sectors such that inter-cell interference is significantly reduced or eliminated by rotating at a different cycle the beams in adjacent cells. This discrete, angular movement of beams provides for downlink transmissions to be timed in such a way (i.e., scheduled) such that transmission to a user will occur in accordance with the beam and time slot having the best carrier to interference (C/I) ratio for that user.

    摘要翻译： 一种用于减少蜂窝无线电系统内的信号干扰以增加覆盖和容量的方法和装置。 所述方法和装置包括根据预定的循环模式改变小区扇区内的波束的方向在离散角位置之间。 预定的循环模式在一组相邻小区扇区中变化，使得通过在相邻小区中的波束的不同周期旋转来显着减少或消除小区间干扰。 波束的这种离散角度运动使得下行链路传输以这种方式（即，调度的）被定时，使得根据具有最佳载波干扰（C / I）的波束和时隙将发生给用户， 该用户的比例。

    Packet communication system with dual candidate sets for independent management of uplink and downlink transmissions
    4.
    发明授权
    Packet communication system with dual candidate sets for independent management of uplink and downlink transmissions 有权
    具有双候选集的分组通信系统，用于独立管理上行链路和下行链路传输

    公开(公告)号：US07756520B2

    公开(公告)日：2010-07-13

    申请号：US09977991

    申请日：2001-10-17

    申请人： Bassam M. Hashem ,  Shalini S. Periyalwar ,  Yoon Chae Cheong

    发明人： Bassam M. Hashem ,  Shalini S. Periyalwar ,  Yoon Chae Cheong

    IPC分类号： H04W72/00

    CPC分类号： H04W48/20 ,  H04B7/022 ,  H04B7/086 ,  H04W36/08

    摘要： A method and apparatus are provided for selecting an optimum base station for communicating with a terminal in a wireless communication system. A base station controller stores two candidate sets for each terminal within communication range of the base stations controlled by the base station controller. One candidate set lists base stations for which the channel quality of the uplink channel between the base station and the terminal is acceptable for communication. The other candidate set lists base stations for which the channel quality of the downlink channel between is acceptable for communication. This allows the base station controller to take into account the predominant direction of traffic when assigning base stations for communication with the terminal.

    摘要翻译： 提供一种用于选择用于在无线通信系统中与终端通信的最佳基站的方法和装置。 基站控制器在由基站控制器控制的基站的通信范围内为每个终端存储两个候选集。 一个候选集列出了基站和终端之间的上行链路信道的信道质量可接受用于通信的基站。 另一候选集合列出下行链路信道的信道质量对于通信是可接受的基站。 这允许基站控制器在分配用于与终端通信的基站时考虑业务的主要方向。

    BEAM WOBBLING FOR INCREASED DOWNLINK COVERAGE AND CAPACITY
    6.
    发明申请
    BEAM WOBBLING FOR INCREASED DOWNLINK COVERAGE AND CAPACITY 有权
    BEAM WOBBLING增加下行链路覆盖和容量

    公开(公告)号：US20120052897A1

    公开(公告)日：2012-03-01

    申请号：US13288551

    申请日：2011-11-03

    申请人： Nimal Gamini SENARATH ,  Yoon Chae CHEONG ,  Shalini PERIYALWAR ,  Robert MATYAS

    发明人： Nimal Gamini SENARATH ,  Yoon Chae CHEONG ,  Shalini PERIYALWAR ,  Robert MATYAS

    IPC分类号： H04W72/00

    CPC分类号： H04W16/28 ,  H04B7/0604 ,  H04B7/0695 ,  H04W16/02 ,  H04W16/12

    摘要： A method and apparatus for reducing signal interference within a cellular radio system to increase both coverage and capacity. The method and apparatus include altering the direction of beams within cell sectors is among discrete angular positions according to a predetermined, cyclic pattern. The predetermined, cyclic pattern varies in a group of adjacent cell sectors such that inter-cell interference is significantly reduced or eliminated by rotating at a different cycle the beams in adjacent cells. This discrete, angular movement of beams provides for downlink transmissions to be timed in such a way (i.e., scheduled) such that transmission to a user will occur in accordance with the beam and time slot having the best carrier to interference (C/I) ratio for that user.

    摘要翻译： 一种用于减少蜂窝无线电系统内的信号干扰以增加覆盖和容量的方法和装置。 所述方法和装置包括根据预定的循环模式改变小区扇区内的波束的方向在离散角位置之间。 预定的循环模式在一组相邻小区扇区中变化，使得通过在相邻小区中的波束的不同周期旋转来显着减少或消除小区间干扰。 波束的这种离散角度运动使得下行链路传输以这种方式（即，调度的）被定时，使得根据具有最佳载波干扰（C / I）的波束和时隙将发生给用户， 该用户的比例。

    Cyclic transmit power adjustment scheme
    8.
    发明授权
    Cyclic transmit power adjustment scheme 有权
    循环发射功率调整方案

    公开(公告)号：US07383057B1

    公开(公告)日：2008-06-03

    申请号：US10848438

    申请日：2004-05-18

    申请人： Gamini Senarath ,  Yoon Chae Cheong ,  Shalini Periyalwar

    发明人： Gamini Senarath ,  Yoon Chae Cheong ,  Shalini Periyalwar

    IPC分类号： H04B7/00 ,  H04Q7/20

    CPC分类号： H04L1/0026 ,  H04B17/24 ,  H04B17/309 ,  H04B17/345 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0037 ,  H04L5/006 ,  H04L5/0064 ,  H04L5/0094 ,  H04W52/367 ,  H04W72/1226

    摘要： The present invention provides cyclic power changing patterns for transmissions in different sectors of a cellular system. The cyclic power changing patterns define unique patterns in which transmission power levels change over a period of time slots or within a group of sub-carriers. Each sector has a unique pattern, so that interference information monitored by the user elements, which are supported by base stations, are indicative of the interference contributions from adjacent sectors. Based on these interference contributions and the cyclic power changing patterns associated with these sectors, the base stations can schedule transmissions to the user elements during time slots or in sub-carriers to minimize the impact of interference from the adjacent sectors and to efficiently support dynamic needs of the individual user data packets according to QoS requirements.

    摘要翻译： 本发明提供了用于蜂窝系统的不同扇区中的传输的循环功率变化模式。 循环功率变化模式定义了发射功率电平在一段时间段或一组子载波内变化的独特模式。 每个扇区具有唯一的模式，使得由基站支持的用户元素所监视的干扰信息表示来自相邻扇区的干扰贡献。 基于这些干扰贡献和与这些扇区相关联的循环功率变化模式，基站可以在时隙或子载波期间调度到用户单元的传输，以最小化来自相邻扇区的干扰的影响并且有效地支持动态需求 的个人用户数据包根据QoS要求。

    BEAM WOBBLING FOR INCREASED DOWNLINK COVERAGE AND CAPACITY
    9.
    发明申请
    BEAM WOBBLING FOR INCREASED DOWNLINK COVERAGE AND CAPACITY 有权
    BEAM WOBBLING增加下行链路覆盖和容量

    公开(公告)号：US20070142045A1

    公开(公告)日：2007-06-21

    申请号：US11679329

    申请日：2007-02-27

    申请人： Nimal SENARATH ,  Yoon Chae CHEONG ,  Shalini PERIYALWAR ,  Robert MATYAS

    发明人： Nimal SENARATH ,  Yoon Chae CHEONG ,  Shalini PERIYALWAR ,  Robert MATYAS

    IPC分类号： H04Q7/20

    CPC分类号： H04W16/28 ,  H04B7/0604 ,  H04B7/0695 ,  H04W16/02 ,  H04W16/12

    摘要： A method and apparatus for reducing signal interference within a cellular radio system to increase both coverage and capacity. The method and apparatus include altering the direction of beams within cell sectors is among discrete angular positions according to a predetermined, cyclic pattern. The predetermined, cyclic pattern varies in a group of adjacent cell sectors such that inter-cell interference is significantly reduced or eliminated by rotating at a different cycle the beams in adjacent cells. This discrete, angular movement of beams provides for downlink transmissions to be timed in such a way (i.e., scheduled) such that transmission to a user will occur in accordance with the beam and time slot having the best carrier to interference (C/I) ratio for that user.

    摘要翻译： 一种用于减少蜂窝无线电系统内的信号干扰以增加覆盖和容量的方法和装置。 所述方法和装置包括根据预定的循环模式改变小区扇区内的波束的方向在离散角位置之间。 预定的循环模式在一组相邻小区扇区中变化，使得通过在相邻小区中的波束的不同周期旋转来显着减少或消除小区间干扰。 波束的这种离散角度运动使得下行链路传输以这种方式（即，调度的）被定时，使得根据具有最佳载波干扰（C / I）的波束和时隙将发生给用户， 该用户的比例。

    Enhanced ARQ with OFDM modulation symbols
    10.
    发明授权
    Enhanced ARQ with OFDM modulation symbols 有权

    公开(公告)号：US07110351B2

    公开(公告)日：2006-09-19

    申请号：US09739367

    申请日：2000-12-19

    申请人： David G. Steer ,  Shalini S. Periyalwar ,  Koon Hoo Teo ,  Yoon Chae Cheong ,  Bassam M. Hashem

    发明人： David G. Steer ,  Shalini S. Periyalwar ,  Koon Hoo Teo ,  Yoon Chae Cheong ,  Bassam M. Hashem

    IPC分类号： H04J11/00

    CPC分类号： H04L1/1812 ,  H04L1/1845 ,  H04L1/1867 ,  H04L27/2602

    摘要： A method and apparatus are provided for error correction in a communication system employing Orthogonal Frequency Division Multiplexing. When a remote unit receives an OFDM symbol, a retransmission indicator bit is examined to determine whether the symbol is an original symbol or a retransmitted symbol. If it is a retransmitted symbol and the remote unit has a corresponding symbol stored in memory, then the received symbol is soft-combined with the stored symbol. Each packet in the symbol, either the received symbol if original or the soft-combined symbol if retransmitted, is examined by the remote unit. If the remote unit determines that a particular packet is intended for the remote unit, but can not determine the contents of the payload of the packet, the remote unit sends a retransmission request to the base station for retransmission of the symbol. The base station determines whether the entire symbol or merely the packet should be retransmitted, based on such considerations as the size of the packet or whether there are additional requests for the symbol. The invention allows both soft-symbol combining and Automatic Repeat Request to be used as error correction techniques.