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    • 3. 发明授权
    • Downlink transmission in a multiple-user multiple-input multiple-output (“MU-MIMO”) wireless communication system
    • 多用户多输入多输出(MU-MIMO)无线通信系统中的下行链路传输
    • US08406332B2
    • 2013-03-26
    • US12689223
    • 2010-01-18
    • Alireza BayestehAmin MobasherHua XuYongkang JiaYi YuJack Anthony SmithZhijun Sam CaiShiwei Gao
    • Alireza BayestehAmin MobasherHua XuYongkang JiaYi YuJack Anthony SmithZhijun Sam CaiShiwei Gao
    • H04B7/02
    • H04B7/0632H04B7/0417H04B7/0452H04B7/0639H04B7/0641
    • Information transmission in a multiple-input multiple-output (“MIMO”) wireless communication system is provided. In one embodiment, a method for transmitting information in a MIMO wireless communication system, comprising updating channel quality information (“CQI”) values of a plurality of wireless devices, wherein updating said CQI values consider the effects of interference from transmissions to those wireless devices associated with a pre-assigned companion codeword set; pairing said plurality of wireless devices using at least said CQI values, a precoding matrix index (“PMI”) value and said pre-assigned companion codeword set, wherein said pre-assigned companion codeword set, pre-assigned companion codewords associated with said pre-assigned companion codeword set and said PMI value are updated for each of said plurality of wireless devices; precoding the information for each of said plurality of wireless devices using said PMI value; and transmitting said precoded information to each of said plurality of wireless devices.
    • 提供了一种多输入多输出(MIMO)无线通信系统中的信息传输。 在一个实施例中,一种用于在MIMO无线通信系统中发送信息的方法,包括更新多个无线设备的信道质量信息(CQI)值,其中更新所述CQI值考虑来自传输的干扰对那些与 预分配的伴随码字集合; 使用至少所述CQI值,预编码矩阵索引(PMI)值和所述预分配伴随码字集合来配对所述多个无线设备,其中所述预分配伴随码字集合,与所述预分配的相关联的预分配伴随码字 对于所述多个无线设备中的每一个更新伴随码字集合和所述PMI值; 使用所述PMI值对所述多个无线设备中的每一个预先编码信息; 以及将所述预编码信息发送到所述多个无线设备中的每一个。
    • 7. 发明申请
    • Frequency-Hopping Method for LTE Aperiodic Sounding Reference Signals
    • LTE非周期性探测参考信号的跳频方法
    • US20120113967A1
    • 2012-05-10
    • US13248149
    • 2011-09-29
    • Jack Anthony SmithZhijun CaiShiwei Gao
    • Jack Anthony SmithZhijun CaiShiwei Gao
    • H04B1/713H04W92/00
    • H04B1/7143H04L5/0062H04L27/2613H04L27/2636
    • Methods and apparatus are provided to enable aperiodic sounding reference signaling including frequency hopping through the use of additional RRC configuration. The methods can require little or no additional L1 overhead to support narrowband frequency hopping for aperiodic sounding transmissions. In some embodiments, an approach is provided for extending an LTE periodic sounding reference signal methodology to include aperiodic sounding. One benefit of the proposed technique is that it enables each UE to perform aperiodic channel sounding in sounding subframes, using a frequency-hopping pattern, in which the sounding bandwidth of the UE can be narrowed appropriately to match its link capability. Additional benefits of the new approach include better resource utilization, lower signaling overhead, faster channel information update rates, and lower blocking probabilities.
    • 提供了方法和装置,以使得能够通过使用附加的RRC配置来进行非周期性的探测参考信号,包括跳频。 这些方法可能需要很少的或没有额外的L1开销来支持非周期性发声传输的窄带跳频。 在一些实施例中,提供了一种用于将LTE周期性探测参考信号方法扩展以包括非周期性探测的方法。 所提出的技术的一个好处在于,它使得每个UE能够使用跳频模式来执行在探测子帧中的非周期信道探测,其中可以适当地缩小UE的探测带宽以匹配其链路能力。 新方法的另外的好处包括更好的资源利用率,较低的信令开销,更快的信道信息更新速率和更低的阻塞概率。