SDMA communications with non-immediate block acknowledgment
    3.
    发明授权
    SDMA communications with non-immediate block acknowledgment 有权
    SDMA通信与非即时块确认

    公开(公告)号:US07567612B2

    公开(公告)日:2009-07-28

    申请号:US11923631

    申请日:2007-10-24

    IPC分类号: H04B1/38 H04L12/42

    CPC分类号: H04L1/16 H04L1/1854 H04L1/188

    摘要: In Spatial Division Multiple Access (SDMA) communications, mobile devices that are transmitting to a base substantially simultaneously during a predetermined communications phase may wait until after an end of the predetermined communications phase to receive acknowledgments to their transmissions, so that a mobile device making a relatively short transmission does not experience an acknowledgement timeout while another mobile device is still completing a relatively long transmission. In some embodiments, the mobile devices may transmit a non-immediate block acknowledgement request during the communications phase.

    摘要翻译: 在空分多址(SDMA)通信中,在预定通信阶段基本上同时发送到基站的移动设备可以等待直到预定通信阶段结束以接收对其传输的确认,从而使得移动设备 相对短的传输在另一移动设备仍然完成相对长的传输时不经历确认超时。 在一些实施例中,移动设备可以在通信阶段期间发送非即时块确认请求。

    SDMA COMMUNICATIONS WITH NON-IMMEDIATE BLOCK ACKNOWLEDGMENT
    4.
    发明申请
    SDMA COMMUNICATIONS WITH NON-IMMEDIATE BLOCK ACKNOWLEDGMENT 有权
    SDMA通信与非立即块确认

    公开(公告)号:US20080181162A1

    公开(公告)日:2008-07-31

    申请号:US11923631

    申请日:2007-10-24

    IPC分类号: H04J3/16 H04J15/00

    CPC分类号: H04L1/16 H04L1/1854 H04L1/188

    摘要: In Spatial Division Multiple Access (SDMA) communications, mobile devices that are transmitting to a base substantially simultaneously during a predetermined communications phase may wait until after an end of the predetermined communications phase to receive acknowledgments to their transmissions, so that a mobile device making a relatively short transmission does not experience an acknowledgement timeout while another mobile device is still completing a relatively long transmission. In some embodiments, the mobile devices may transmit a non-immediate block acknowledgement request during the communications phase.

    摘要翻译: 在空分多址(SDMA)通信中,在预定通信阶段基本上同时发送到基站的移动设备可以等待直到预定通信阶段结束以接收对其传输的确认,从而使得移动设备 相对短的传输在另一移动设备仍然完成相对长的传输时不经历确认超时。 在一些实施例中,移动设备可以在通信阶段期间发送非即时块确认请求。

    PROVIDING CQI FEEDBACK TO A TRANSMITTER STATION IN A CLOSED-LOOP MIMO SYSTEM
    7.
    发明申请
    PROVIDING CQI FEEDBACK TO A TRANSMITTER STATION IN A CLOSED-LOOP MIMO SYSTEM 失效
    向闭环MIMO系统中的发射机站提供CQI反馈

    公开(公告)号:US20070253386A1

    公开(公告)日:2007-11-01

    申请号:US11617549

    申请日:2006-12-28

    IPC分类号: H04Q7/24

    摘要: Methods and apparatuses for reducing an amount of bandwidth required for feedback to a transmitter station in a closed-loop multiple-input multiple-output (MIMO) system are described herein. The methods may include initially measuring at a receiver station channel qualities associated with receiving signals from a transmitter station for a first and a second spatial channel, the transmitter and receiver stations employing a closed-loop MIMO system. The receiver station may then determine a first and a second channel quality indicator (CQI) based on the measured channel qualities and may then transmit to the transmitter station the first and the second CQI to directly and indirectly identify a first and a second modulation coding scheme (MCS) entry among a plurality of ordered MCS entries, respectively. The second MCS entry being one of a selected subset of lower ordered MCS entries relative to the first MCS entry. The transmitter station may selectively use the first and the second identified MCS to transmit signals to the receiver station over the first and the second spatial channel, respectively.

    摘要翻译: 这里描述了用于减少在闭环多输入多输出(MIMO)系统中向发射机站反馈所需的带宽量的方法和装置。 这些方法可以包括最初在接收机站处测量与从发射机站接收针对第一和第二空间信道的信号相关联的信道质量,所述发射机和接收机站采用闭环MIMO系统。 然后,接收站可以基于所测量的信道质量来确定第一和第二信道质量指示符(CQI),然后可以向发射机站发送第一和第二CQI以直接和间接地识别第一和第二调制编码方案 (MCS)条目分别在多个有序的MCS条目中。 第二MCS条目是相对于第一MCS条目的低阶MCS条目的选定子集之一。 发射机站可以选择性地使用第一和第二识别的MCS分别在第一和第二空间信道上向接收机站发送信号。