Patent ID: 8526351

Claim:
An apparatus, comprising: a baseband processing module for generating a multi-cast sounding frame, the multi-cast sounding frame includes a sounding feedback instruction; and a plurality of antennae for transmitting the multi-cast sounding frame to a plurality of wireless communication devices; and wherein: in response to the multi-cast sounding frame, the plurality of antennae receiving a plurality of sounding feedback signals from the plurality of wireless communication devices or from a first subset of the plurality of wireless communication devices based upon an order according to the sounding feedback instruction by which the plurality of sounding feedback signals are provided, the order configured to accommodate a feedback exchange interruption; based on the plurality of sounding feedback signals, the baseband processing module generating a multi-user packet; and the plurality of antennae transmitting the multi-user packet to the plurality of wireless communication devices or to a second subset of the plurality of wireless communication devices.