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专利名称：PSMP-based downlink multi-user MIMO
communications
发明人：James June-Ming Wang,Huanchun Ye申请号：US13583739申请日：20110908公开号：US09253767B2公开日：20160202
专利附图：
摘要：A scheduling-based downlink MU-MIMO mechanism is proposed in a wirelesscommunication system. An access point transmits a first scheduling message to aplurality of stations. The first scheduling message reserves a first transmission burst for
channel sounding. The AP then transmits a sounding signal and in response receiveschannel state information (CSI) from the plurality of stations. Based on the CSI, the APperforms MU-MIMO encoding and applies transmit beamforming (precoding). The APtransmits a second scheduling message that reserves a second transmission burst forMU-MIMO transmission. The AP then transmits downlink data streams to multiplestations simultaneously. Finally, the AP receives uplink acknowledgements from thestations. In one embodiment, the scheduling-based MU-MIMO is implemented usingPSMP scheduling technique. PSMP-based downlink MU-MIMO allows both 802.11n and802.11ac stations to process multiple spatial streams with reduced complexity, enhancedperformance, and significant power saving.
申请人：James June-Ming Wang,Huanchun Ye
地址：San Marino CA US,Cupertino CA US
国籍：US,US
代理机构：McClure, Qualey & Rodack, LLP
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