Blue Danube Systems, Inc.

Dilip Bethanabhotla

Mihai Banu

Raghunandan M Rao

Ramesh Chembil-Palat

Chris Tsun Kit Ng

A method of communicating with UEs located within a serviced area, the method involving: defining a set of differently directed, narrow beams which collectively cover the serviced area; (a) during a first period of operation: (i) cycling through the beams one at a time by separately activating each beam in synchronization with the subframe structure of a signal from the BBU; and (ii) while each beam is activated, initiating channel sounding for all of the UEs in the serviced area; and (b) during a second period of operation immediately following the first period of operation: (i) cycling through all of the beams one at a time by separately activating each beam in synchronization with the subframe structure of the signal from the BBU; and (ii) while each beam is activated, transmitting data over that beam to the UEs in accordance with a scheduling scheme.

Enhancing throughput using agile beam switching and user scheduling in cellular systems

A method for communicating with a plurality of communication devices (UEs) using a phased array antenna system including an array of antenna elements, the method involving: receiving a plurality of port signal streams, wherein the plurality of port signal streams was obtained by precoding a plurality of data streams, each data stream of the plurality of data streams intended for a different corresponding UE; and within the phased array antenna system, processing the plurality of port signal streams to (1) undo the precoding that was performed on the plurality of data streams, and (2) generate via the array of antenna elements a plurality of transmit beams, wherein each transmit beam is directed towards a corresponding different UE among the plurality of UEs and carries a corresponding transmit signal that is derived exclusively from the data stream among the plurality of data streams that is intended for that UE.

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Fremont, CA, United States of America

Dilip Bethanabhotla