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    • 2. 发明授权
    • Channel aware multiple user MIMO scheme unified with single user closed loop MIMO
    • 信道感知多用户MIMO方案与单用户闭环MIMO统一
    • US08179844B2
    • 2012-05-15
    • US12183317
    • 2008-07-31
    • Hongming ZhengShanshan ZhengMay Wu
    • Hongming ZhengShanshan ZhengMay Wu
    • H04W4/00H04W72/00
    • H04W72/1257H04L1/0017H04L1/0026H04L1/0035H04W72/1226
    • A base station is capable of unifying a single-user MIMO scheme with a multi-user MIMO scheme by receiving a Rank-1 CQI values from one or more subscriber stations. The base station also receives preceding vectors from the subscriber stations, and then determines which of the subscriber stations has a best Rank-1 CQI value. The base station then determines a beam forming matrix to use based at least in part on the vectors received from the subscriber station having the best Rank-1 CQI value. The base station then broadcasts data to the subscriber station using the beam forming matrix corresponding to the subscriber station having the best Rank-1 channel quality indicator to implement single-user MIMO in one or multiple streams to that subscriber station, or to the subscriber stations having the best Rank-2 channel quality indicators to implement multi-user MIMO in multiple streams.
    • 基站能够通过从一个或多个用户站接收Rank-1 CQI值来统一单用户MIMO方案与多用户MIMO方式。 基站还从用户站接收预编码向量,然后确定哪个用户站具有最佳Rank-1 CQI值。 然后,基站至少部分地基于从具有最佳Rank-1 CQI值的用户站接收的向量来确定要使用的波束形成矩阵。 然后,基站使用与具有最佳Rank-1信道质量指示符的用户站相对应的波束形成矩阵向订户台广播数据,以在一个或多个流中实现单用户MIMO到该用户台,或者向订户站 具有最佳的2级信道质量指标,可在多个流中实现多用户MIMO。
    • 3. 发明申请
    • METHOD AND APPARATUS FOR ALLOCATING POWER IN A MU-MIMO COMMUNICATION SYSTEM
    • 在MU-MIMO通信系统中分配功率的方法和装置
    • US20090047987A1
    • 2009-02-19
    • US12057194
    • 2008-03-27
    • Guangjie LiYang GaoMay Wu
    • Guangjie LiYang GaoMay Wu
    • H04B7/00H04K1/10
    • H04W52/267H04W52/143H04W52/225H04W52/241H04W52/265H04W72/1226H04W72/1257
    • Machine-readable media, methods, apparatus and system for allocating power in a MU-MIMO communicating system are described. In some embodiments, an apparatus of a base station in the MU-MIMO communication system may comprise: a power calculating logic to calculate a power for each user of a plurality of users communicating with the base station in the MU-MIMO system, based upon an average power and a power increment. The power calculating logic may further comprise an average power logic to calculate the average power among the plurality of users based upon a total power for the base station to communicate with the plurality of users, and a power increment logic to determine the power increment for the each user based upon at least one of a fairness algorithm and a throughput algorithm, and wherein different users of the plurality of users having different long-term signal to interference plus noise ratios (SINRs) are calculated with different powers. The apparatus may further comprise a power allocating logic to allocate the power to the each user.
    • 描述了在MU-MIMO通信系统中分配功率的机器可读介质,方法,装置和系统。 在一些实施例中,MU-MIMO通信系统中的基站的装置可以包括:功率计算逻辑,用于基于MU-MIMO系统中的与基站通信的多个用户的每个用户计算功率,基于 平均功率和功率增量。 功率计算逻辑还可以包括平均功率逻辑,用于基于用于基站与多个用户通信的总功率来计算多个用户之间的平均功率;以及功率递增逻辑,用于确定所述多个用户的功率增量 每个用户基于公平算法和吞吐量算法中的至少一个,并且其中具有不同长度信号与干扰加噪声比(SINR)的多个用户中的不同用户以不同的功率被计算。 该装置还可以包括功率分配逻辑以将功率分配给每个用户。