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    • 17. 发明授权
    • TV white space devices using structured databases
    • 电视白色空间设备使用结构化数据库
    • US09268800B2
    • 2016-02-23
    • US14304574
    • 2014-06-13
    • Wi-LAN Inc.
    • Jung YeeVajira SamarasooriyaLingjie Li
    • H04W72/00G06F17/30H04W16/14H04W28/18H04W48/14
    • G06F17/30289G06F17/30091G06F17/30345G06F17/30557H04W16/14H04W28/18H04W48/14
    • 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. 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.
    • 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时,本地数据库将在本地区域中存储与所有发射机相关的信息。 本地数据库与中央数据库进行通信,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关于信道使用,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。
    • 18. 发明申请
    • BASE STATION CONFIGURED FOR PERSISTENT RESOURCE ALLOCATION
    • 配置不间断资源分配的基站
    • US20160037529A1
    • 2016-02-04
    • US14879632
    • 2015-10-09
    • WI-LAN, INC.
    • Yair BourlasKirupairaj Asirvatham
    • H04W72/04
    • H04W72/0453H04L1/0004H04L1/001H04L1/1861H04L1/1887H04L5/0007H04L5/003H04L5/0053H04L5/0055H04L5/0096H04W72/04H04W72/0466H04W88/08
    • Methods and apparatus for communicating and utilizing persistent allocation of resources are described herein. A base station may allocate persistent resources to a client station, and may associate the client station or persistent resource allocation with a particular shared NACK channel. The base station may monitor the NACK channel for a NACK indicating a map error. The base station may monitor the resource allocation to implicitly determine a map error. The base station may 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 may monitor persistent resource allocation information elements in map messages and/or may indicate failure to receive a persistent resource allocation information element in a NACK message on a shared NACK channel.
    • 本文描述了用于传送和利用资源的持续分配的方法和装置。 基站可以向客户站分配持久资源,并且可以将客户端站或持久资源分配与特定的共享NACK信道相关联。 基站可以监视NACK信道用于指示地图误差的NACK。 基站可以监视资源分配以隐含地确定地图误差。 基站可以响应于NACK或隐含错误确定重新发送一个或多个持久资源分配信息元素。 具有持续资源分配的客户站可以监视地图消息中的持久资源分配信息元素和/或可以指示在共享NACK信道上的NACK消息中接收持续资源分配信息元素的失败。
    • 19. 发明授权
    • Wireless transceiver with reduced transmit emissions
    • 无线收发器具有减少的发射排放
    • US09178539B2
    • 2015-11-03
    • US13618102
    • 2012-09-14
    • Todd SuttonSrikanth GummadiWalid HosseiniLei Wang
    • Todd SuttonSrikanth GummadiWalid HosseiniLei Wang
    • H04B1/40H04B1/04H04B1/525H04L5/00
    • H04B1/0475H04B1/525H04L5/0007H04L5/003H04L5/0066
    • Methods and apparatus for reducing transmit emissions are described herein. The transmit out of band emissions in an adjacent band can be reduced while complying with existing wireless communication standards through utilization of one or more of reduced transmit bandwidth, transmit operating band offset, and channel index remapping. The transceiver can support a receive operating band substantially adjacent to a band edge. The transmit operating band can be offset from an adjacent frequency band, and can use a narrower operating band than is supported by the receiver. The transmit baseband signal can have a reduced bandwidth to reduce the amount of noise. The frequency offset can introduce a larger transition band between the transmit operating band edges and the adjacent frequency band of interest. The transceiver can remap channel assignments to compensate for the frequency offset such that the frequency offset introduced in the transmitter is transparent to channel allocation.
    • 本文描述了用于减少发射发射的方法和装置。 通过利用减少的发送带宽,发射工作频带偏移和信道索引重映射中的一个或多个,可以减少相邻频带中的发射带外发射,同时遵守现有的无线通信标准。 收发器可以支持基本上与带边缘相邻的接收操作带。 发射工作频带可以偏离相邻频带,并且可以使用比由接收机支持的更窄的工作频带。 发射基带信号可以具有减小的带宽以减少噪声量。 频率偏移可以在发射工作频带边缘和感兴趣的相邻频带之间引入更大的转换频带。 收发器可以重新分配信道分配以补偿频率偏移,使得在发射机中引入的频率偏移对信道分配是透明的。