专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

71. 发明申请

US20080260000A1 Method and System for Capacity and Coverage Enhancement in Wireless Networks With Relays 有权
标题翻译：具有继电器的无线网络容量和覆盖增强方法与系统
公开(公告)号：US20080260000A1
公开(公告)日：2008-10-23
申请号：US11664135
申请日：2005-09-29
申请人： Shalini Periyalwar , Omer Mubarek , Halim Yanikomeroglu
发明人： Shalini Periyalwar , Omer Mubarek , Halim Yanikomeroglu
IPC分类号： H04B1/713 , H04Q7/20
CPC分类号： H04W72/082 , H04B1/7143 , H04B1/715 , H04B7/2606 , H04B2001/7154 , H04L5/0007 , H04L5/0032 , H04L5/0048 , H04W16/26 , H04W24/00 , H04W88/04
摘要： A method and system for capacity and coverage enhancement in wireless networks is provided. Each cell has a base station and in-cell relay stations. The base station includes interference avoidance/averaging mechanism, dynamic resource partitioning mechanism or a combination thereof. The interference avoidance/averaging mechanism dynamically creating a FH pattern based on interference information obtained from its serving cell. The base station may include a scheduler for dynamic resource partitioning mechanism for managing scheduling in the cell.
摘要翻译：提供了一种无线网络容量和覆盖增强方法和系统。每个小区都有一个基站和一个小区内中继站。基站包括干扰避免/平均机制，动态资源分配机制或其组合。干扰避免/平均机制基于从其服务小区获得的干扰信息动态创建FH模式。基站可以包括用于管理小区中的调度的动态资源划分机制的调度器。

72. 发明授权

US07406060B2 Coverage improvement in wireless systems with fixed infrastructure based relays 失效
标题翻译：基于固定基础设施的继电器无线系统的覆盖改进
公开(公告)号：US07406060B2
公开(公告)日：2008-07-29
申请号：US11242029
申请日：2005-10-04
申请人： Shalini Periyalwar , Shiquan Wu
发明人： Shalini Periyalwar , Shiquan Wu
IPC分类号： H04Q7/20
CPC分类号： H04B7/15528 , H04B7/026 , H04B7/0452 , H04B7/15592 , H04B7/2606 , H04L25/20
摘要： Infrastructure relays are used to relay signals to multi-antenna receivers where the received signals are then processed using MIMO processing. The transmissions can use spatial multiplexing and/or space time block coding.
摘要翻译：基础设施继电器用于将信号中继到多天线接收机，其中接收的信号然后使用MIMO处理进行处理。传输可以使用空间复用和/或空间时间块编码。

73. 发明授权

US07383057B1 Cyclic transmit power adjustment scheme 有权
标题翻译：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。

74. 发明申请

US20070274253A1 Methods For Supporting Mimo Transmission In Ofdm Applications 有权
标题翻译：在Ofdm应用中支持Mimo传输的方法
公开(公告)号：US20070274253A1
公开(公告)日：2007-11-29
申请号：US11547561
申请日：2005-04-05
申请人： Hang Zhang , Mo-Hang Fong , Shalini Periyalwar , Peiying Zhu
发明人： Hang Zhang , Mo-Hang Fong , Shalini Periyalwar , Peiying Zhu
IPC分类号： H04Q7/22
CPC分类号： H04B7/0697 , H04L5/0007 , H04L5/0023 , H04L5/0028 , H04L5/006 , H04L5/0085
摘要： Aspects of the present invention provide MAC enhancements to support the PHY features of a MIMO-OFDMA framework. The MAC enhancements involve DL burst assignment to support adaptive MIMO transmission, UL burst assignment to support adaptive MIMO transmission, fast feedback channel operation to support wireless terminal dynamic feedback of MIMO mode selection, for example space time transmit diversity (STTD) or spatial multiplexing (SM), and/or permutation mode selection, for example diversity or adjacent subcarrier mode, dynamic CQICH allocation and de-allocation and the use of CQICH_ID for DL burst allocation. One or more of these enhancements is included in a given implementation. Methods are also provided for implementing the MAC enhancements.
摘要翻译：本发明的方面提供MAC增强以支持MIMO-OFDMA框架的PHY特征。 MAC增强涉及DL突发分配以支持自适应MIMO传输，UL突发分配以支持自适应MIMO传输，快速反馈信道操作以支持MIMO模式选择的无线终端动态反馈，例如空时传输分集（STTD）或空间复用（ SM）和/或置换模式选择，例如分集或相邻子载波模式，动态CQICH分配和去分配以及使用CQICH_ID进行DL突发分配。这些增强中的一个或多个包括在给定的实现中。还提供了实现MAC增强的方法。

75. 发明申请

US20070142045A1 BEAM WOBBLING FOR INCREASED DOWNLINK COVERAGE AND CAPACITY 有权
标题翻译： 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。

76. 发明申请

US20070002818A1 Enhanced ARQ with OFDM modulation symbols 有权
公开(公告)号：US20070002818A1
公开(公告)日：2007-01-04
申请号：US11515840
申请日：2006-09-06
申请人： David Steer , Shalini Periyalwar , Koon Teo , Yoon Cheong , Bassam Hashem
发明人： David Steer , Shalini Periyalwar , Koon Teo , Yoon Cheong , Bassam Hashem
IPC分类号： H04J11/00 , H04B7/208
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.

77. 发明申请

US20060126493A1 Dynamic sub-carrier assignment in OFDM systems 有权
标题翻译： OFDM系统中的动态子载波分配
公开(公告)号：US20060126493A1
公开(公告)日：2006-06-15
申请号：US11346261
申请日：2006-02-03
申请人： Bassam Hashem , David Steer , Shalini Periyalwar
发明人： Bassam Hashem , David Steer , Shalini Periyalwar
IPC分类号： H04J11/00
CPC分类号： H04W72/08 , H04L27/2608 , H04W72/0453
摘要： A method and apparatus are provided for selecting and signalling the identity of sub-carriers to be used for transmission of data in a radio communication system, and for using other sub-carriers. A remote unit determines which sub-carriers are acceptable for use in data transmission by comparing the signal to interference ratio of each sub-carrier with a threshold. A sequence of numbers is generated using one set of values to identify acceptable sub-carriers and another set of values to identify unacceptable sub-carriers. The sequence of numbers is transmitted to a base station. The average signal to interference ratio of sub-carriers whose signal to interference ratio was above the threshold can also be transmitted to the base station, thereby allowing the base station to determine an optimum set of transmission parameters for use only in the acceptable sub-carriers. Alternatively, the remote unit can determine the optimum set of transmission parameters itself for transmission to the base station. As yet another alternative, the remote unit can determine an optimum Link Mode for each acceptable sub-carrier, and use a reference to the Link Modes as the set of values identifying acceptable sub-carriers. The base station transmits data over the acceptable sub-carriers at the optimum Link Mode or Link Modes. The base station may use some of the unacceptable sub-carriers for transmission of low sensitivity data at the optimum Link Mode, and may use some of the unacceptable sub-carriers for transmission of data at a lower Link Mode. The transmission power of any unused unacceptable sub-carriers can be diverted to other sub-carriers.
摘要翻译：提供了一种方法和装置，用于选择和发送用于无线电通信系统中的数据传输的子载波的标识，以及用于使用其他子载波。远程单元通过将每个子载波的信号与干扰比与阈值进行比较来确定哪些子载波可接受用于数据传输。使用一组值来生成数字序列以识别可接受的子载波，另一组值用于识别不可接受的子载波。数字序列被发送到基站。信号干扰比高于阈值的子载波的平均信号干扰比也可以被发送到基站，从而允许基站确定仅在可接受的子载波中使用的最佳传输参数集合。或者，远程单元可以确定用于传输到基站的最佳传输参数集合本身。作为另一替代方案，远程单元可以为每个可接受的子载波确定最佳的链路模式，并且使用对链路模式的引用作为识别可接受的子载波的值的集合。基站以最佳链路模式或链路模式通过可接受的子载波发送数据。基站可以使用一些不可接受的子载波用于在最佳链路模式下传输低灵敏度数据，并且可以使用一些不可接受的子载波来传输较低链路模式的数据。任何未使用的不可接受的副载波的发射功率可以转移到其他副载波。

78. 发明申请

US20050070266A1 Beam wobbling for increased downlink coverage and capacity 有权
标题翻译：波束摆动增加下行链路的覆盖和容量
公开(公告)号：US20050070266A1
公开(公告)日：2005-03-31
申请号：US10673483
申请日：2003-09-30
申请人： Nimal Senarath , Yoon Cheong , Shalini Periyalwar , Robert Matyas
发明人： Nimal Senarath , Yoon Cheong , Shalini Periyalwar , Robert Matyas
IPC分类号： H04W16/02 , H04W16/12 , H04W16/28 , 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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式