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134 条记录 (耗时 0.014 秒)

    TRANSCEIVER WITH RECEIVE AND TRANSMIT PATH PERFORMANCE DIVERSITY
    21.
    发明公开
    TRANSCEIVER WITH RECEIVE AND TRANSMIT PATH PERFORMANCE DIVERSITY 有权
    与接收能力和性能的发射分集发射/接收器

    公开(公告)号：EP2127434A1

    公开(公告)日：2009-12-02

    申请号：EP08713767.5

    申请日：2008-01-15

    申请人： WI-LAN Inc.

    发明人： LUM, Allan ,  SUTTON, Todd

    IPC分类号： H04Q7/36 ,  H04B7/02

    CPC分类号： H04B7/0845 ,  H04K3/228 ,  H04K2203/32

    摘要： Methods and apparatus for implementing a wireless communication transceiver having receive path performance diversity. The transceiver implements a plurality of signal paths that can be configured as space diversity receive paths. Each of the plurality of signal paths includes a distinct RF filter. Each RF filter can be configured to provide a distinct frequency response, and in particular, a distinct jammer rejection profile. One of the RF filters can be configured to provide substantially no in-band jammer rejection. Each additional distinct RF filter can be configured to reject at least one distinct in-band jammer frequency or band of frequencies. A diversity receiver coherently combines the path performance diverse signals from each filter output. A transmitter can time division duplex transmit communications over at least a subset of the signal paths and their associated RF filters.

    METHOD AND APPARATUS FOR IMPLEMENTING A MAC COPROCESSOR IN A COMMUNICATIONS SYSTEM
    23.
    发明授权
    METHOD AND APPARATUS FOR IMPLEMENTING A MAC COPROCESSOR IN A COMMUNICATIONS SYSTEM 有权
    方法和装置用于实现MAC协处理器的通信系统

    公开(公告)号：EP1374458B1

    公开(公告)日：2007-11-21

    申请号：EP02707949.0

    申请日：2002-03-04

    申请人： WI-LAN Inc.

    发明人： BOURLAS, Yair ,  COHEN, Lewis, N. ,  REEVES, Michael, G. ,  STANWOOD, Kenneth, L.

    IPC分类号： H04L12/56

    CPC分类号： H04W88/08 ,  H04L47/14 ,  H04L47/24 ,  H04W28/20

    摘要： Disclosed is a novel method and system for efficiently synchronizing, transmitting, and receiving data between a base station and a plurality of customer premises. A MAC coprocessor (MCP) (402) is implemented, which works in conjunction with the MAC (410) in order to produce a robust, high throughput communication system. The MAC coprocessor (402) performs many of the tasks typically performed by prior art MAC's, including: during a downlink, storing a data frame, sorting the data frame according to modulation type or other criteria, determining when the data frame is full, and appending a set of CPE settings to the data frame. During an uplink, the MAC coprocessor (402) receives all data and routes the data either to the MAC (410) or a network backhaul. A MAC coprocessor (402) may be used in both the base station and Customer Premises. In both the downlink and uplink processes, having a MAC coprocessor working in conjunction with the MAC may significantly increase the communication system's throughput.

    Asymmetric adaptive modulation in a wireless communication system
    24.
    发明公开
    Asymmetric adaptive modulation in a wireless communication system 有权
    在无线通信系统的非对称的自适应调制

    公开(公告)号：EP1801989A2

    公开(公告)日：2007-06-27

    申请号：EP07075257.1

    申请日：2002-08-19

    申请人： Wi-LAN, Inc.

    发明人： Arviv, Eli ,  Spinar, Brian ,  Stanwood, Kenneth ,  Gazelle, David ,  Zimmerman, Ofer ,  Efraim, Penny

    IPC分类号： H04B1/38 ,  H04L1/00

    CPC分类号： H04L1/20 ,  H04L2001/0093

    摘要： On embodiment of the system and method provides asymmetric adaptive modulation which allows uplink and downlink subframes (304, 302, respectively) of data to be transmitted between a base station (102) and a CPE (104) with different modulation schemes, thus increasing the efficiency of downlink transmissions while maintaining the stability of uplink transmissions. In systems with multiple CPEs, each CPE (104) and base station (102) pair can independently select their uplink and downlink modulation techniques. The system and method are also adaptive in that they adjust the modulation schemes based on, for example, signal to noise ratio measurements or bit error rate measurements.

    ERROR CORRECTION FOR A PERSISTENT RESOURCE ALLOCATION
    25.
    发明公开
    ERROR CORRECTION FOR A PERSISTENT RESOURCE ALLOCATION 审中-公开

    公开(公告)号：EP4216477A1

    公开(公告)日：2023-07-26

    申请号：EP23151300.3

    申请日：2008-09-04

    申请人： Wi-LAN Inc.

    发明人： BOURLAS, Yair ,  ASIRVATHAM, Kirupairaj

    IPC分类号： H04L5/00 ,  H04L1/00

    摘要： Methods and apparatus for communicating and utilizing persistent allocation of resources are described herein. A base station can allocate persistent resources to a client station, and can associate the client station or persistent resource allocation with a particular shared NACK channel. The base station can monitor the NACK channel for a NACK indicating a map error. The base station can also monitor the resource allocation to implicitly determine a map error. The base station can resend one or more persistent resource allocation information elements in response to the NACK or implicit error determination. A client station having a persistent resource allocation can monitor persistent resource allocation information elements in map messages and can indicate failure to receive a persistent resource allocation information element in a NACK message on a preassigned share NACK channel.

    Asymmetric adaptive modulation in a wireless communication system
    26.
    发明公开
    Asymmetric adaptive modulation in a wireless communication system 审中-公开
    无线通信系统中的非对称自适应调制

    公开(公告)号：EP2667516A3

    公开(公告)日：2017-07-19

    申请号：EP13177285.7

    申请日：2002-08-19

    申请人： WI-LAN, Inc.

    发明人： Arviv, Eli ,  Spinar, Brian ,  Stanwood, Kenneth ,  Gazelle, David ,  Zimmerman, Ofer ,  Efraim, Penny

    IPC分类号： H04B1/38 ,  H04L1/00 ,  H04L1/20

    CPC分类号： H04L1/20 ,  H04L2001/0093

    摘要： One embodiment of the system and method provides asymmetric adaptive modulation which allows uplink and downlink subframes (304, 302, respectively) of data to be transmitted between a base station (102) and a CPE (104) with different modulation schemes, thus increasing the efficiency of downlink transmissions while maintaining the stability of uplink transmissions. In systems with multiple CPEs, each CPE (104) and base station (102) pair can independently select their uplink and downlink modulation techniques. The system and method are also adaptive in that they adjust the modulation schemes based on, for example, signal to noise ratio measurements or bit error rate measurements.

    摘要翻译： 该系统和方法的一个实施例提供非对称自适应调制，其允许以不同调制方案在基站（102）和CPE（104）之间传输数据的上行链路和下行链路子帧（分别为304,302），因此增加 下行链路传输的效率，同时保持上行链路传输的稳定性。 在具有多个CPE的系统中，每个CPE（104）和基站（102）对可以独立地选择其上行链路和下行链路调制技术。 该系统和方法也是自适应的，因为它们基于例如信噪比测量或误码率测量来调整调制方案。

    TV WHITE SPACE DEVICES USING STRUCTURED DATABASES
    27.
    发明公开
    TV WHITE SPACE DEVICES USING STRUCTURED DATABASES 审中-公开
    白葡萄酒VORRICHTUNGENFÜRTV-FREQUENZSPEKTRUM MIT STRUKTURIERTEN DATENBANKEN

    公开(公告)号：EP2591622A4

    公开(公告)日：2017-01-25

    申请号：EP10854255

    申请日：2010-07-09

    申请人： WI-LAN INC

    发明人： JUNG YEE ,  VAJIRA SAMARASOORIYA ,  LINGJIE LI

    IPC分类号： H04W16/14 ,  H04W24/00 ,  H04W28/20

    CPC分类号： G06F17/30289 ,  G06F17/30091 ,  G06F17/30345 ,  G06F17/30557 ,  H04W16/14 ,  H04W28/18 ,  H04W48/14

    摘要： A two-level database structure for use by unlicensed TVBD devices operating in TV white space comprises a central database and local databases. The central database comprises two sub-database: the central licensed database which maintains information about all licensed TV devices and the central unlicensed database which maintains information about unlicensed wireless devices operating in TV spectrum. The local database is created by each TVBD device or TVBD network when it initiates and it stores information related to all transmitters in the local area including location, power transmission levels, operating schedule, sensing results, backup channel information. The local databases communicate with central database to query it about licensed usage of TV spectrum and register with central database. The local databases communicate with each other to exchange information about channel usage, sensing results, transmission patterns and other information that will allow the local databases to negotiate coexistence without central coordinator. The locally implemented negotiation prevents the overloading of the central database.

    摘要翻译： 用于在TV空白中工作的未经许可的TVBD设备使用的两级数据库结构包括中央数据库和本地数据库。 中央数据库包括两个子数据库：中央许可数据库，其维护关于所有许可的电视设备的信息和中央非许可数据库，其维护关于在TV频谱中操作的未许可的无线设备的信息。 每台TVBD设备或TVBD网络创建本地数据库，并且存储与本地区域中的所有发射机有关的信息，包括位置，功率传输电平，操作时间表，感应结果，备份信道信息。 本地数据库与中央数据库通信，查询有关电视频谱的许可使用情况，并向中央数据库注册。 本地数据库相互通信以交换有关信道使用，感测结果，传输模式和其他信息的信息，这些信息将允许本地数据库在没有中央协调器的情况下协商共存。 本地实施的协商可以防止中央数据库的超载。