Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology

Patent metadata

Field	Value
Publication number	US-12537580-B2
Application number	US-202418439711-A
Country	US
Kind code	B2
Filing date	Feb 12, 2024
Priority date	Mar 12, 2013
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

A multiple antenna system (MAS) with multiuser (MU) transmissions (“MU-MAS”) exploiting inter-cell multiplexing gain via spatial processing to increase capacity in wireless communications networks.

First claim

We claim:

1 . A radio access network (RAN) comprising:
a plurality of antennas or wireless transceiver devices (BTSs) distributed throughout a coverage area without cells, all sharing the same cell identifier (cell ID); wherein the RAN is configured to choose a first subset of BTSs for downlink and uplink data communications based on the spatial diversity between a plurality of user equipment devices (UEs) and BTSs; and wherein the RAN is configured to utilize precoding to create a plurality of concurrent non-interfering downlink (DL) or uplink (UL) data links between the first subset of BTSs and the UEs within the same frequency band.

2 . The system as in claim 1 wherein the RAN is configured to choose the first subset of BTSs to schedule data communications.

3 . The system as in claim 1 wherein the data communications capacity of the RAN is shared among the plurality of UEs.

4 . The system as in claim 2 wherein the data communications capacity of the RAN is shared among the plurality of UEs.

5 . The system as in claim 1 , wherein the RAN is configured to choose a second subset of BTSs at a different time interval than when the RAN chooses the first subset of BTSs.

6 . The system as in claim 2 , wherein the RAN is configured to choose a second subset of BTSs at a different time interval than when the RAN chooses the first subset of BTSs.

7 . The system as in claim 3 , wherein the RAN is configured to choose a second subset of BTSs at a different time interval than when the RAN chooses the first subset of BTSs.

8 . The system as in claim 4 , wherein the RAN is configured to choose a second subset of BTSs at a different time interval than when the RAN chooses the first subset of BTSs.

9 . The system as in claim 5 wherein the first and second subsets of BTSs are disjoint.

10 . The system as in claim 6 wherein the first and second subsets of BTSs are disjoint.

11 . The system as in claim 7 wherein the first and second subsets of BTSs are disjoint.

12 . The system as in claim 8 wherein the first and second subsets of BTSs are disjoint.

13 . A method implemented within a radio access network RAN comprising:
distributing a plurality of antennas or wireless transceiver devices (BTSs) throughout a coverage area without cells, all sharing the same cell ID; communicatively coupling a plurality of user equipment devices (UEs) to the BTSs; the RAN choosing a first subset of BTSs for downlink and uplink data communications based on the spatial diversity between the UEs and BTSs; and the RAN utilizing precoding to create a plurality of concurrent non-interfering DL or UL data links between the first subset of BTSs and the UEs within the same frequency band.

14 . The method as in claim 13 wherein the RAN chooses the first subset of BTSs to schedule data communications.

15 . The method as in claim 13 wherein the RAN shares the data communications capacity of the RAN among the plurality of UEs.

16 . The method as in claim 14 wherein the RAN shares the data communications capacity of the RAN among the plurality of UEs.

17 . The method as in claim 13 , wherein the RAN chooses a second subset of BTSs at a different time interval than when the RAN chooses the first subset of BTSs.

18 . The method as in claim 14 , wherein the RAN chooses a second subset of BTSs at a different time interval than when the RAN chooses the first subset of BTSs.

19 . The method as in claim 15 , wherein the RAN chooses a second subset of BTSs at a different time interval than when the RAN chooses the first subset of BTSs.

20 . The method as in any one of claim 16 , wherein the RAN chooses a second subset of BTSs at a different time interval than when the RAN chooses the first subset of BTSs.

21 . The method as in claim 17 wherein the first and second subsets of BTSs are disjoint.

22 . A radio access network (RAN) comprising:
a plurality of antennas or wireless transceiver devices (BTSs) distributed throughout a coverage area without cells, all sharing the same cell identifier (cell ID); wherein the RAN is configured to choose a first subset of BTSs and a first subset of user equipment devices (UEs) for downlink and uplink data communications based on the spatial diversity between the UEs and BTSs; and wherein the RAN is configured to utilize precoding to create a plurality of concurrent non-interfering downlink (DL) or uplink (UL) data links, including control channel links, between the first subset BTSs and the first subset of UEs within the same frequency band.

23 . The system as in claim 22 wherein the RAN is configured to choose the first subset of BTSs and first subset of UEs to schedule data communications.

24 . The system as in claim 22 wherein the data communications capacity of the RAN is shared among the plurality of UEs.

25 . The system as in claim 23 wherein the data communications capacity of the RAN is shared among the plurality of UEs.

26 . The system as in claim 22 , wherein the RAN is configured to choose a second subset of BTSs and a second subset of UEs at a different time interval than when the RAN chooses the first subset of BTSs and first subset of UEs.

27 . The system as in any one of claim 23 , wherein the RAN chooses a second subset of BTSs and a second subset of UEs at a different time interval than when the RAN chooses the first subset of BTSs and first subset of UEs.

28 . The system as in any one of claim 24 , wherein the RAN chooses a second subset of BTSs and a second subset of UEs at a different time interval than when the RAN chooses the first subset of BTSs and first subset of UEs.

29 . The system as in any one of claim 25 , wherein the RAN chooses a second subset of BTSs and a second subset of UEs at a different time interval than when the RAN chooses the first subset of BTSs and first subset of UEs.

30 . The system as in claim 29 wherein the first and second subsets of BTSs and/or the first and second subsets of UEs are disjoint.

31 . A method implemented within a radio access network (RAN) comprising:
distributing a plurality of antennas or wireless transceiver devices (BTSs) throughout a coverage area without cells, all sharing the same cell ID; communicatively coupling a plurality of user equipment devices (UEs) to the BTSs; the RAN choosing a first subset of BTSs and a first subset of UEs for downlink and uplink data communications based on the spatial diversity between the UEs and BTSs; and the RAN utilizing precoding to create a plurality of concurrent non-interfering DL or UL data links, including control channel links, between the first subset of BTSs and the first subset of UEs within the same frequency band.

32 . The method as in claim 31 wherein the RAN chooses the first subset of BTSs and first subset of UEs to schedule data communications.

33 . The method as in claim 31 wherein the RAN shares the data communications capacity of the RAN among the plurality of UEs.

34 . The method as in claim 32 wherein the RAN shares the data communications capacity of the RAN among the plurality of UEs.

35 . The method as in any one of claim 31 wherein the RAN chooses a second subset of BTSs and a second subset of UEs at a different

Assignees

• Rearden Llc

Inventors

• Forenza Antonio
• Perlman Stephen G

Classifications

• H04B7/0452

  Multi-user MIMO systems · CPC title

• H04B7/0626 Primary

  Channel coefficients, e.g. channel state information [CSI] · CPC title