Co-phasing of transmissions from multiple infrastructure nodes

An article of manufacture comprising a storage medium having instructions stored thereon that, if executed, result in:

• receiving pilot signals from two or more infrastructure nodes;
• obtaining phase or timing information, or combinations thereof, from the pilot signals;
• feeding back the phase or timing information, or combinations thereof, to the infrastructure nodes;
• and
• receiving one or more subsequent transmissions from the infrastructure nodes with phase shift or timing adjustments, or combinations thereof, applied to the spatial streams transmitted by the infrastructure nodes.

A method, comprising:

• receiving one or more sounding signals from a remote station transmitting the sounding signals;
• comparing phases or times of arrival, or combinations thereof, of the sounding signals on two or more infrastructure nodes;
• calculating phase adjustments or timing adjustments, or combinations thereof, to apply to spatial streams for the infrastructure nodes;
• applying intra-node phase or timing adjustments, or inter-node phase or timing adjustments, or combinations thereof, during one or more transmissions from the infrastructure nodes to the remote station.

An apparatus, comprising:

• a processor and a memory coupled to the processor;
• and
• a transceiver coupled to the processor to send and receive radio-frequency signals;
• wherein instructions in the memory configure the processor to:
• receive pilot signals via the transceiver from two or more infrastructure nodes;
• calculate phase shift adjustments or timing adjustments, or combinations thereof, to apply to one or more spatial streams of the infrastructure nodes;
• transmit the calculated phase shift or timing adjustments, or combinations thereof, via the transceiver to the infrastructure nodes;
• and
• receive one or more subsequent transmissions via the transceiver from the infrastructure nodes with the phase shift or timing adjustments, or combinations thereof, applied to the spatial streams received from the infrastructure nodes.