Power control for TV white space devices
    22.
    发明授权
    Power control for TV white space devices 有权
    电视空白设备的电源控制

    公开(公告)号:US08831668B2

    公开(公告)日:2014-09-09

    申请号:US13290864

    申请日:2011-11-07

    摘要: Certain aspects of the present disclosure provide techniques and apparatus for using power control in a television white space (TVWS) network. One example method generally includes generating, at a first apparatus, a message for controlling a transmit power of a second apparatus—the message including a first indication of a first transmitter power backoff for the first apparatus and a second indication of a second transmitter power backoff for the second apparatus—and transmitting, to the second apparatus, the message based on the first transmitter power backoff. In this manner, messaging may be used to enable transmit power control of devices in a TVWS network, which may operate in accordance with the IEEE 802.11af standard.

    摘要翻译: 本公开的某些方面提供了在电视空白(TVWS)网络中使用功率控制的技术和装置。 一个示例性方法通常包括在第一设备处生成用于控制第二设备的发射功率的消息 - 该消息包括第一设备的第一发射机功率回退的第一指示和第二发射机功率回退的第二指示 对于第二装置,并且基于第一发射机功率回退向第二装置发送消息。 以这种方式,可以使用消息传递来实现可以根据IEEE 802.11af标准操作的TVWS网络中的设备的发射功率控制。

    Protocol for channel state information feedback
    28.
    发明授权
    Protocol for channel state information feedback 有权
    信道状态信息反馈协议

    公开(公告)号:US09337954B2

    公开(公告)日:2016-05-10

    申请号:US13179651

    申请日:2011-07-11

    摘要: Certain aspects of the present disclosure relate to a low-overhead method for communicating Channel State Information (CSI) feedback in Very High Throughput (VHT) wireless communications systems. The present disclosure also provides packet formats for Null Data Packet Announcement (NDPA), CSI Poll and CSI feedback. In some cases, the CSI feedback may be too large to be carried in a single Media Access Control (MAC) protocol data unit (MPDU) or a Physical Layer (PHY) protocol data unit (PPDU), and a proposed protocol for CSI feedback segmentation can be then utilized.

    摘要翻译: 本公开的某些方面涉及用于在非常高吞吐量(VHT)无线通信系统中传送信道状态信息(CSI)反馈的低开销方法。 本公开还提供用于空数据分组公告(NDPA),CSI轮询和CSI反馈的分组格式。 在某些情况下,CSI反馈可能太大,无法在单个媒体访问控制(MAC)协议数据单元(MPDU)或物理层(PHY)协议数据单元(PPDU)中携带,并且提出了CSI反馈协议 然后可以利用分割。

    SCHEDULING ALGORITHMS FOR IEEE 802.11 MULTI-USER (MU) MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) COMMUNICATION SYSTEMS
    30.
    发明申请
    SCHEDULING ALGORITHMS FOR IEEE 802.11 MULTI-USER (MU) MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) COMMUNICATION SYSTEMS 有权
    用于IEEE 802.11多用户(MU)多输入多输出(MIMO)通信系统的调度算法

    公开(公告)号:US20130272211A1

    公开(公告)日:2013-10-17

    申请号:US13465522

    申请日:2012-05-07

    IPC分类号: H04W72/04

    摘要: A method is provided for wirelessly transmitting from a transmitter to one or more receivers within a multi-user (MU) multiple-input and multiple-output (MIMO) communication system. A number of concurrent (spatial) streams are dynamically allocated in a MU-MIMO transmission to each of a plurality of served receivers to maximize total data transmitted on each transmission. Streams are allocated according to a corresponding transmission queue length for each receiver and the number of receive antennas used by each of the served receivers. A transmission timer is started upon sending the transmission. A random backoff counter is also started upon one of either: (a) expiration of the transmission timer or (b) receipt of data at a transmission queue. A new transmission is sent upon expiration of the random backoff counter if the transmission timer has expired. Otherwise, the random backoff counter is restarted one or more times until the transmission timer has expired.

    摘要翻译: 提供了一种用于从多用户(MU)多输入(MIMO)通信系统中的发射机向一个或多个接收机进行无线发射的方法。 在MU-MIMO传输中动态地将多个并行(空间)流分配给多个服务接收机中的每一个,以最大化在每个传输上传输的总数据。 流根据每个接收机的相应传输队列长度和每个被服务接收机使用的接收天线的数量来分配。 传送定时器在发送传输时开始。 以下之一也开始随机退避计数器:(a)传输定时器到期或(b)在传输队列处接收数据。 如果发送定时器已经到期,则在随机退避计数器到期时发送新的传输。 否则,随机退避计数器重新启动一次或多次,直到传输定时器到期。