利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

309 条记录 (耗时 0.03 秒)

    Methods for supporting MIMO transmission in OFDM applications
    1.
    发明授权
    Methods for supporting MIMO transmission in OFDM applications 有权
    在OFDM应用中支持MIMO传输的方法

    公开(公告)号：US07630356B2

    公开(公告)日：2009-12-08

    申请号：US11547561

    申请日：2005-04-05

    申请人： Hang Zhang ,  Mo-Han Fong ,  Shalini Periyalwar ,  Peiying Zhu

    发明人： Hang Zhang ,  Mo-Han Fong ,  Shalini Periyalwar ,  Peiying Zhu

    IPC分类号： H04B7/208

    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。

    Switching in a Distributed Access Network
    2.
    发明申请
    Switching in a Distributed Access Network 审中-公开
    在分布式访问网络中切换

    公开(公告)号：US20080268907A1

    公开(公告)日：2008-10-30

    申请号：US11569988

    申请日：2005-06-03

    申请人： Gamini Senarath ,  Shalini Periyalwar ,  Hang Zhang ,  Bill Gage ,  Mo-Han Fong

    发明人： Gamini Senarath ,  Shalini Periyalwar ,  Hang Zhang ,  Bill Gage ,  Mo-Han Fong

    IPC分类号： H04Q7/38

    CPC分类号： H04L1/16 ,  H04L1/1874 ,  H04L69/08 ,  H04L2001/0092 ,  H04W36/02

    摘要： The present invention provides conversion between SDUs transmitted between a central network controller and base stations and PDUs transmitted between the base stations and mobile terminals. For downlink communications, SDUs are transmitted from the central network controller and forwarded to the base stations in an active set. One base station will break down the SDUs to create PDUs to transmit to the mobile terminal. For uplink communications, the base station will receive PDUs from the mobile terminal, create SDUs from the PDUs, and transmit the SDUs to the central network controller. During switching events, continuity information received from a previously serving base station is processed by the mobile terminal and used to create continuity information to send to the currently serving base station and used to determine the appropriate PDU from which to start transmissions to the mobile terminal after the switching event.

    摘要翻译： 本发明提供了在中央网络控制器和基站之间传输的SDU与在基站和移动终端之间传输的PDU之间的转换。 对于下行链路通信，SDU从中央网络控制器发送并转发到活动集中的基站。 一个基站将分解SDU以创建PDU以向移动终端传输。 对于上行链路通信，基站将从移动终端接收PDU，从PDU创建SDU，并将SDU发送到中央网络控制器。 在切换事件期间，由先前服务的基站接收的连续性信息由移动终端处理，并用于创建连续性信息以发送到当前服务的基站，并且用于确定适当的PDU，从而在其之后开始传输到移动终端 切换事件。

    Multi-hop wireless backhaul network and method
    5.
    发明授权
    Multi-hop wireless backhaul network and method 有权
    多跳无线回程网络及方法

    公开(公告)号：US08385189B2

    公开(公告)日：2013-02-26

    申请号：US12624964

    申请日：2009-11-24

    申请人： Shalini Periyalwar ,  Hang Zhang ,  Glenn Algie ,  Peiying Zhu ,  Robert Matyas ,  Claude Royer ,  Bill Gage ,  James Mark Naden ,  Alauddin Javed

    发明人： Shalini Periyalwar ,  Hang Zhang ,  Glenn Algie ,  Peiying Zhu ,  Robert Matyas ,  Claude Royer ,  Bill Gage ,  James Mark Naden ,  Alauddin Javed

    IPC分类号： H04W4/00 ,  H04W40/00 ,  H04W72/00 ,  H04L12/26 ,  H04L12/28

    CPC分类号： H04L41/044 ,  H04L41/0896

    摘要： Some embodiments of the invention provide an implementation for a multi-hop wireless backhaul network, in particular an aggregation node (AGN). The AGN includes a plurality of spatially switched antennas and a transceiver configured to operate on the plurality of spatially switched antennas in a time divisional multiplexing (TDM) fashion to establish active connections with other network nodes in a hierarchical manner. The AGN is further configured to perform a bi-directional relay function for backhaul traffic with the other network nodes using at least one virtual circuit having an allocated bandwidth for delay sensitive traffic. The AGN may serve to aggregate and relay/amplify circuit traffic between network nodes in the up stream and down stream directions. If the AGN is interposed within a circuit between two other nodes, the AGN can switch the circuit traffic between the end-nodes of the circuit.

    摘要翻译： 本发明的一些实施例提供了一种用于多跳无线回程网络，特别是聚合节点（AGN）的实现。 AGN包括多个空间切换天线和收发器，其被配置为以时分复用（TDM）方式在多个空间切换天线上操作，以分级方式建立与其他网络节点的活动连接。 AGN还被配置为执行用于回程业务的双向中继功能，其他网络节点使用具有用于延迟敏感业务的分配带宽的至少一个虚拟电路。 AGN可以用于在上行和下行方向上聚合和中继/放大网络节点之间的电路业务。 如果AGN插在两个其他节点之间的电路中，则AGN可以在电路的终端节点之间切换电路业务。

    MULTI-HOP WIRELESS BACKHAUL NETWORK AND METHOD
    6.
    发明申请
    MULTI-HOP WIRELESS BACKHAUL NETWORK AND METHOD 审中-公开
    多呼叫无线对讲网络和方法

    公开(公告)号：US20130010777A1

    公开(公告)日：2013-01-10

    申请号：US13617258

    申请日：2012-09-14

    申请人： Shalini Periyalwar ,  Hang Zhang ,  Glenn Algie ,  Peiying Zhu ,  Robert Matyas ,  Claude Royer ,  Bill Gage

    发明人： Shalini Periyalwar ,  Hang Zhang ,  Glenn Algie ,  Peiying Zhu ,  Robert Matyas ,  Claude Royer ,  Bill Gage

    IPC分类号： H04W84/12

    CPC分类号： H04L41/044 ,  H04L41/0896

    摘要： Some embodiments of the invention provide an implementation for a multi-hop wireless backhaul network. These embodiments can advantageously be deployed in dense urban areas and/or co-located with wireless access nodes, such as base-stations of a cellular wireless communication system. Preferably wireless links between constituent network nodes are set-up hierarchically. A basic result of this is that peer-to-peer (child-to-child) communication is generally prohibited and circuits are forced to conform to a topology. The multi-hop wireless backhaul network may be used to carry delay sensitive, high-density last mile circuit traffic over Non-Line-Of-Sight (NLOS) broadband radio links. Moreover, some embodiments of the invention provide a method of path-healing for re-routing of circuit traffic from circuits that have experienced catastrophic failures.

    摘要翻译： 本发明的一些实施例提供了一种用于多跳无线回程网络的实现。 这些实施例可以有利地部署在密集的城市区域和/或与诸如蜂窝无线通信系统的基站的无线接入节点共同定位。 优选地，分级地设置组成网络节点之间的无线链路。 其基本结果是通常禁止对等（子对话）通信，并且电路被迫符合拓扑。 多跳无线回程网络可以用于在非视线（NLOS）宽带无线电链路上传送延迟敏感的高密度最后一公里电路业务。 此外，本发明的一些实施例提供了一种路径愈合的方法，用于从经历灾难性故障的电路重新路由电路业务。

    Efficient location updates, paging and short bursts
    7.
    发明授权
    Efficient location updates, paging and short bursts 有权
    高效的位置更新，寻呼和短脉冲串

    公开(公告)号：US08917703B2

    公开(公告)日：2014-12-23

    申请号：US13209019

    申请日：2011-08-12

    申请人： Hang Zhang ,  Mo-Han Fong ,  Peiying Zhu ,  Wen Tong

    发明人： Hang Zhang ,  Mo-Han Fong ,  Peiying Zhu ,  Wen Tong

    IPC分类号： H04B7/216 ,  H04W74/08 ,  H04W68/00

    CPC分类号： H04W72/0413 ,  H04W68/00 ,  H04W74/0866

    摘要： A mobile terminal in a wireless communication network may be one of several modes of operation. When in an idle mode, the mobile terminal may avoid a lengthy random access procedure normally associated with responding to a page from a base station, if the base station includes in the page an indication of a resource that the mobile terminal may utilize when responding to the page. Additionally, the mobile terminal may transmit an efficient location update MAC header to a base station, whether prompted to by a page from the base station or not. Furthermore, without leaving the idle mode or a sleep mode, the mobile terminal may exchange short data burst messages with a base station.

    摘要翻译： 无线通信网络中的移动终端可以是若干操作模式之一。 当处于空闲模式时，如果基站在页面中包括移动终端在响应时可以利用的资源的指示，则移动终端可以避免通常与响应于来自基站的页面相关联的冗长的随机接入过程 这一页。 另外，移动终端可以向基站发送有效的位置更新MAC报头，无论是否由来自基站的页面提示。 此外，在不离开空闲模式或睡眠模式的情况下，移动终端可以与基站交换短数据突发消息。

    Systems and methods for use with orthogonal frequency division multiplexing
    8.
    发明授权
    Systems and methods for use with orthogonal frequency division multiplexing 有权
    用于正交频分复用的系统和方法

    公开(公告)号：US08804609B2

    公开(公告)日：2014-08-12

    申请号：US11666882

    申请日：2005-10-13

    申请人： Hang Zhang ,  Mo-Han Fong ,  Peiying Zhu ,  Wen Tong

    发明人： Hang Zhang ,  Mo-Han Fong ,  Peiying Zhu ,  Wen Tong

    IPC分类号： H04W4/00

    CPC分类号： H04L5/0055 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0067 ,  H04L1/0071 ,  H04L1/0643 ,  H04L1/1671 ,  H04L1/1812 ,  H04L1/1819 ,  H04L1/1822 ,  H04L1/1861 ,  H04L1/1887 ,  H04L1/189 ,  H04L1/1896 ,  H04L9/0891 ,  H04L9/30 ,  H04L27/2601 ,  H04L27/2602 ,  H04L2209/80 ,  H04W12/02 ,  H04W12/04

    摘要： Systems and methods are provided for enabling H-ARQ communication between a base station and one or more wireless terminals. Methods for enabling incremental redundancy (IR) based H-ARQ, Chase based H-ARQ and Space-Time Code combining (STC) based H-ARQ between devices for down-link and up-link direction transmissions are provided in the form of an information element (IE) for use with a Normal MAP convention as currently accepted in the draft version standard of IEEE 802.16. In addition, embodiments of the invention provide a resource management scheme to protect a network from abuse of resources from a wireless terminal not registered with the network. Components of the down-link and up-link mapping components of a data frame transmitted from the base station to one or more wireless terminals included messages that are readable by all wireless terminals as well as some messages that are encrypted and only readable by wireless terminals that are authenticated as being registered with the network.

    摘要翻译： 提供了用于使基站与一个或多个无线终端之间进行H-ARQ通信的系统和方法。 在下行链路和上行链路方向传输的设备之间使用基于H-ARQ，基于Chase的H-ARQ和基于空时码合并（STC）的H-ARQ的方法可以以 信息元素（IE），用于IEEE 802.16草案版本标准中当前接受的普通MAP约定。 此外，本发明的实施例提供了一种资源管理方案，用于保护网络免受来自未向网络注册的无线终端的资源的滥用。 从基站发送到一个或多个无线终端的数据帧的下行链路和上行链路映射组件的组件包括可由所有无线终端读取的消息以及被加密且仅由无线终端可读的一些消息 被认证为在网络上注册。