MULTI-USER MULTIPLE-INPUT MULTIPLE-OUTPUT (MU-MIMO) FEEDBACK PROTOCOL (MU-MIMO)

• Main Authors: TIAN, Bin B, MERLIN, Simone S, VERMANI, Sameer S, TANDRA, Rahul R
• Format: Patent
• Language: Chinese; English
• Published: 16.06.2017
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; WIRELESS COMMUNICATIONS NETWORKS

A method includes sending, from an access point of a wireless network to a first station of a plurality of stations of the wireless network, a packet including a preamble, a data portion, and trigger data that includes non-precoded, omni-direction data. The preamble precedes the data portion. The data portion precedes the trigger data. The trigger data is configured to cause the first station to perform a channel measurement responsive to receiving the packet. The access point sends beamformed data to one or more of the plurality of stations. At least one of the plurality of stations includes a mobile station configured to receive the beamformed data. The method also includes receiving, at the access point from the first station, feedback information that includes channel state information associated with the trigger data. The feedback information is received from the first station without polling individual stations of the plurality of stations.