Granted Patent B2

US 12,581,351 · App. 18/389,127 · Granted Mar 17, 2026

Inventors: Antonio Forenza (San Francisco, CA); Stephen G. Perlman (Palo Alto, CA)

Assignee: Rearden, LLC

H04W28/0236H04B7/024H04B7/0417H04B7/0452H04B7/063H04B7/0632H04B7/0639H04J11/0053

Abstract

Claims (24)

1 . A multiple antenna system “MAS” with multiuser “MU” transmissions “MU-MAS” comprising:

a plurality of antennas or wireless transceiver devices “BTSs” ( 903 ) distributed throughout a coverage area, each BTS with a cell identifier “cell ID”;

a plurality of wireless user devices “UEs” communicatively coupled to at least one of the BTSs ( 903 ) and distributed throughout the coverage area; and

a spatial processing unit ( 901 ) configured to utilize precoding to combine N streams of information from M streams of bits to create a plurality of concurrent non-interfering downlink “DL” data links; and

wherein the plurality of UEs maintain more than eight concurrent non-interfering DL and uplink “UL” links with more than eight BTSs throughout an entire coverage area of one or more BTSs within the same frequency band; and

wherein M and N are integer numbers of more than 8.

2 . The system as in claim 1 wherein the MU-MAS is a mobile network ( 900 ).

3 . The system as in claim 2 wherein the mobile network ( 900 ) is compatible with 3GPP protocols Release 8.

4 . The system as in claim 1 wherein the spatial processing unit ( 901 ) uses closed-loop or open-loop precoding methods.

5 . The system as in claim 4 in which a DL or UL reference signal is used to estimate the channel state information “CSI” of each of the plurality of UEs.

6 . The system as in claim 5 in which UL/DL reciprocity is exploited to estimate the CSI.

7 . A method implemented within a multiple antenna system “MAS” with multiuser “MU” transmissions “MU-MAS” comprising:

distributing a plurality of antennas or wireless transceiver devices “BTSs” ( 903 ) throughout a coverage area, each BTS with a cell identifier “cell ID”;

communicatively coupling a plurality of wireless user devices “UEs” to the BTSs ( 903 ); and

using precoding to combine N streams of information from M streams of bits to create;

a plurality of concurrent non-interfering downlink “DL” data links; and

a plurality of concurrent non-interfering uplink “UL” data links;

wherein the plurality of UEs maintain more than eight concurrent non-interfering DL and UL links more than eight BTSs throughout an entire coverage area of one or more BTSs within the same frequency band; and

wherein M and N are integer numbers of more than eight.

8 . The method as in claim 7 wherein the MU-MAS is a mobile network ( 900 ).

9 . The method as in claim 7 wherein the mobile network ( 900 ) is compatible with Release 8 3GPP protocols.

10 . The method as in claim 7 wherein the MU-MAS uses closed-loop or open-loop precoding.

11 . The method as in claim 10 wherein the MU-MAS uses a DL or UL reference signal to estimate the channel state information “CSI” of each of the plurality of UEs.

12 . The method as in claim 11 wherein the MU-MAS exploits UL/DL reciprocity to estimate the CSI.

Assignments (1)

Continuity (4)

References Cited (400)