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    Providing CQI feedback with common code rate to a transmitter station
    2.
    发明授权
    Providing CQI feedback with common code rate to a transmitter station 有权
    向发射台提供具有共同码率的CQI反馈

    公开(公告)号：US08422583B2

    公开(公告)日：2013-04-16

    申请号：US13205589

    申请日：2011-08-08

    申请人： Qinghua Li ,  Guangjie Li ,  Xintian E. Lin ,  Minnie Ho

    发明人： Qinghua Li ,  Guangjie Li ,  Xintian E. Lin ,  Minnie Ho

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0632 ,  H04B7/0641 ,  H04B7/0643 ,  H04L1/0025 ,  H04L1/0029

    摘要： Methods and apparatuses for providing CQI feedback to a transmitter station are described herein. In one implementation, an apparatus may include a transceiver to transmit and receive signals to and from a transmitter station, and a controller coupled to the transceiver to control the transceiver to transmit to the transmitter station a first channel quality indicator (CQI) that corresponds to a first modulation level to be used by the transmitter station to transmit first signals, and to control the transceiver to transmit to the transmitter station a differential indicator that comprises two bits or less to differentially indicate a second CQI relative to the first CQI, wherein the second CQI corresponds to a second modulation level to be used by the transmitter station to transmit second signals. Other embodiments may be described and/or claimed.

    摘要翻译： 本文描述了用于向发射机站提供CQI反馈的方法和装置。 在一个实现中，设备可以包括收发信机，用于向发射台发送信号和从发射机站接收信号，以及耦合到收发器的控制器，以控制收发信机向发射台发送对应于发射机的第一信道质量指示符（CQI） 要由发射机站用于发送第一信号的第一调制电平，并且控制收发信机向发射台发送包含两位或更少差分指示相对于第一CQI的第二CQI的差分指示符，其中， 第二CQI对应于由发射机站用于发射第二信号的第二调制电平。 可以描述和/或要求保护其他实施例。

    Providing CQI feedback to a transmitter station in a closed-loop MIMO system
    6.
    发明授权
    Providing CQI feedback to a transmitter station in a closed-loop MIMO system 失效
    在闭环MIMO系统中向发射机站提供CQI反馈

    公开(公告)号：US07751368B2

    公开(公告)日：2010-07-06

    申请号：US11617549

    申请日：2006-12-28

    申请人： Qinghua Li ,  Guangjie Li ,  Xintian E. Lin ,  Minnie Ho

    发明人： Qinghua Li ,  Guangjie Li ,  Xintian E. Lin ,  Minnie Ho

    IPC分类号： H04W4/00 ,  H04B1/00 ,  H04B1/38 ,  H03C1/62

    CPC分类号： H04L1/0026 ,  H04B7/0632 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0029

    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。

    OPEN LOOP MU-MIMO
    7.
    发明申请
    OPEN LOOP MU-MIMO 有权
    开环MU-MIMO

    公开(公告)号：US20090041148A1

    公开(公告)日：2009-02-12

    申请号：US11864932

    申请日：2007-09-29

    申请人： GUANGJIE LI ,  Xiaoxin Wu ,  Zhangyong Ma ,  Yang Gao ,  Feng Zhou ,  May Wu

    发明人： GUANGJIE LI ,  Xiaoxin Wu ,  Zhangyong Ma ,  Yang Gao ,  Feng Zhou ,  May Wu

    IPC分类号： H04L1/02

    CPC分类号： H04W72/1257 ,  H04L1/0017 ,  H04L1/0026 ,  H04L1/0035 ,  H04W72/1226

    摘要： A unified open loop single-user/multiple-user multiple-input-multiple-output (MIMO) system and method are disclosed. The system and method operate without use of channel state information feedback. Instead, the method utilizes channel quality indicator feedback to schedule users to spatial resource blocks. Both symmetric multi-user MIMO schemes (like 2×2 and 4×4) and asymmetric multi-user MIMO schemes are considered. CQI feedback and reduction proposals are also introduced. The method may be used in a proposed network topology.

    摘要翻译： 公开了一种统一的开环单用户/多用户多输入多输出（MIMO）系统和方法。 系统和方法操作而不使用信道状态信息反馈。 相反，该方法利用信道质量指示符反馈来将用户调度到空间资源块。 考虑了对称多用户MIMO方案（如2x2和4x4）和非对称多用户MIMO方案。 还引入了CQI反馈和减少建议。 该方法可以用于所提出的网络拓扑中。