Large deviation delay analysis of queue-aware multi-user MIMO systems with multi-timescale mobile-driven feedback

A method, comprising:

• determining a subset of mobile device candidates from among a set of mobile device candidates based on queue state information of a plurality of mobile device queues for a plurality of transmitters and receivers communicatively coupled in a multiple input multiple output channel;
• transmitting a communication comprising a random beam that supports a near-orthogonal data stream to the subset of mobile device candidates that initiates feedback comprising channel state information from the subset of mobile device candidates in the plurality of mobile device queues;
• and
• selecting a portion of the subset of mobile device candidates for scheduling communications via the multiple input multiple output channel.

A computer readable storage device comprising executable instructions that, in response to execution, cause at least one device including at least one processor to perform operations, the operations comprising:

• determining a subset of mobile device antennas from a set of mobile device antennas, based on queue state information of a multi user queue of a multiple input multiple output channel;
• transmitting a communication to the subset of mobile device antennas that enables the subset of mobile device antennas having a queue delay length that satisfies a queue delay length condition among the set of mobile device antennas to communicate a set of feedback;
• receiving the set of feedback that comprises channel state information from the subset of mobile device antennas of the multi user queue;
• and
• selecting a portion of the subset of mobile device antennas based on the channel state information.

A device comprising:

• a memory storing executable instructions;
• and
• a processor configured to execute the executable instructions to at least:
• receive a broadcast comprising a queue state information dependent feedback candidate data designating a subset of mobile device candidates having a feedback priority from among a set of mobile device candidates based on a set of queue state information of a plurality of mobile device queues for a multiple input multiple output channel, wherein the queue state information dependent feedback candidate data enables communication of feedback based on a feedback filtering condition that is a function of a feedback probability, and wherein the feedback probability is determined from queuing backlogs for a set of time slots of the plurality of mobile device queues;
• and
• communicate the feedback comprising local channel state information in response to the feedback filtering condition being satisfied.