Enhancing MU-MIMO to group clients across multiple BSSIDS for a physical radio

摘要

MU-MIMO provides a mechanism for a wireless network device to transmit to multiple client devices at the same time. When employing MU-MIMO, a network device may group two or more associated client devices, and transmit beamformed signals to each group. In some implementations, a network device may initiate channel sounding. Channel sounding may include transmitting sounding frames to client devices associated with two or more basic service sets. Channel sounding may facilitate beamforming transmissions to client devices associated with the two or more basic service sets. The network device may receive feedback frames from client devices associated with the two or more basic service sets. A feedback frame may indicate how a sounding frame was received. In some implementations, the network device may further construct a feedback table from the feedback frames. The feedback table may facilitate grouping of the client devices for beamforming transmissions.

主权项

1. A computer-implemented method, comprising:
initiating, by a network device, channel sounding, wherein channel sounding includes transmitting sounding frames to client devices associated with two or more basic service sets, and wherein channel sounding facilitates beamforming transmissions to client devices associated with the two or more basic service sets; receiving feedback frames from client devices associated with the two or more basic service sets, wherein a feedback frame indicates how a sounding frame was received; constructing a feedback table from the feedback frames, wherein:
constructing the feedback table includes groupingat least two client devices that are not in a same basic service set; and reshaping the beamforming transmissions using data on relative angles between respective transmission antennas of the network device and receiving antennas of the client devices in the constructed feedback table.