Method and system for optimizing communication in leaky wave distributed transceiver environments

• US 9,548,805 B2
• Filed: 06/17/2013
• Issued: 01/17/2017
• Est. Priority Date: 08/08/2012
• Status: Active Grant

• Current Assignee: Golba LLC
• Original Assignee: Golba LLC
• Inventors: Moshfeghi, Mehran
• Primary Examiner(s): Rutkowski, Jeffrey M
• Assistant Examiner(s): WOOD, JONATHAN
• Application Number:
  US13/919,972
• Publication Number:
  US 20140044043A1
• Time in Patent Office: 1,310 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04B 17/26 using historical data, averaging values or statistics
• CPC Class Codes: H04B 17/309 Measuring or estimating channel quality parameters
• CPC Class Codes: H04B 17/336 Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
• CPC Class Codes: H04B 17/382 for resource allocation, admission control or handover
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/0689 using different transmission schemes, at least one of them being a diversity transmission scheme
• CPC Class Codes: H04B 7/0697 using spatial multiplexing
• CPC Class Codes: H04B 7/0871 using different reception schemes, at least one of them being a diversity reception scheme
• CPC Class Codes: H04B 7/10 Polarisation diversity; Directional diversity
• CPC Class Codes: H04B 7/12 Frequency diversity
• CPC Class Codes: H04L 12/6418 Hybrid transport
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 7/033 using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
• CPC Class Codes: H04W 16/10 Dynamic resource partitioning
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 4/00 Services specially adapted for wireless communication networks; Facilities therefor
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 84/00 : Network topologies

Abstract

A communication device may comprise a plurality of distributed transceivers and one or more corresponding antenna arrays. A processor may configure a first distributed transceiver to receive signals comprising one or more first data streams via one or more first communication links. The processor may configure a second distributed transceiver to receive signals comprising one or more second data streams via one or more second communication links. The processor may determine a channel response matrix associated with communication of the one or more first data streams via the one or more first communication links and/or the one or more second data streams via the one or more second communication links. The processor may optimize one or both of link capacity and/or link reliability of the one or more first communication links and/or the one or more second communication links based on the determined channel response matrix.

Claims

1. A method, comprising:

in a communication device comprising a plurality of distributed transceivers, each distributed transceiver comprising an antenna array comprising a plurality of antennas;

configuring the plurality of antennas of the antenna array of a first distributed transceiver of said plurality of distributed transceivers to receive signals comprising a combination of first and second data streams from a transmitting device via a first plurality of communication links, said first and second data streams generated by the transmitting device by applying pre-coding on two independent data streams;

configuring the plurality of antennas of the antenna array of a second distributed transceiver of said plurality of distributed transceivers to receive signals comprising said combination of the first and second data streams from the transmitting device via a second plurality of communication links;

determining a channel response matrix for communication of said combination of first and second data streams via said first and second plurality of communication links, the channel response matrix comprising a function of a phase of each of said first and second plurality of communication links; and

optimizing a link capacity of said first and second plurality of communication links, said optimizing comprising changing a phase center of the antenna array of each of the first and second transceivers by activating one or more antennas in each array in order to optimize said function of the phase of each of said first and second plurality of communication links in said determined channel response matrix.

2. The method according to claim 1 further comprising determining a range for said function of the phase of each of said first and second plurality of communication links over which said optimization is acceptable.

3. The method according to claim 2, wherein the function of the phase is a sum of the phase of each of said first and second plurality of communication links, the method further comprising adjusting the sum based on said determined range for said function of the phase over which said optimization is acceptable.

4. The method according to claim 2 further comprising adjusting said determined range for said function of the phase based on a signal to noise ratio on said first plurality of communication links and said second plurality of communication links.

5. The method according to claim 2 further comprising determining said range for said function of the phase over which said optimization is acceptable based on one or more of training signals and pilot signals communicated via said first plurality of communication links and said second plurality of communication links.

6. The method according to claim 2 further comprising dynamically and/or adaptively displacing one or more of said first distributed transceiver, the antenna array of said first distributed transceiver, said second distributed transceiver, and the antenna array of said second distributed transceiver to satisfy said determined range of said function of the phase over which said optimization is acceptable.

7. The method according to claim 6, wherein said displacement of said one or more of said first distributed transceiver, said antenna array of said first distributed transceiver, said second distributed transceiver, and said antenna array of said second distributed transceiver occurs spatially in one or more of x-coordinate, y-coordinate, and z-coordinate.

8. The method according to claim 2 further comprising dynamically and/or adaptively controlling one of an adjustment of a phase center of the antenna array of said first distributed transceiver and an adjustment of a phase center of the antenna array of said second distributed transceiver to satisfy said determined range of said function of the phase over which said optimization is acceptable.

9. The method according to claim 1, wherein said first plurality of data streams and said second plurality of data streams comprise different polarizations.

10. The method according to claim 1, wherein said first plurality of data streams and said second plurality of data streams comprise similar polarizations.

11. The method of claim 1, wherein optimizing the said function of the phase of each of said first and second plurality of communication links comprises minimizing said function of the phase of each of said first and second plurality of communication links.

12. The method of claim 1, wherein each antenna array is associated with a phase shifter, wherein said configuring the antenna array of the first distributed transceiver comprises adjusting a pattern of the antenna array of the first distributed transceiver using the phase shifter associated with the antenna array of the first distributed transceiver, wherein said configuring the antenna array of the second distributed transceiver comprises adjusting a pattern of the antenna array of the second distributed transceiver using the phase shifter associated with the antenna array of the second distributed transceiver.

13. A communication device, comprising:

one or more processors; and

a plurality of distributed transceivers, each distributed transceiver comprising an antenna array, comprising a plurality of antennas;

said one or more processors configured to;

configure the plurality of antennas of the antenna array of a first distributed transceiver of said plurality of distributed transceivers to receive signals comprising a combination of first and second data streams from a transmitting device via a first plurality of communication links, said first and second data streams generated by the transmitting device applying pre-coding on two independent data streams;

configure the plurality of antennas of the antenna array of a second distributed transceiver of said plurality of distributed transceivers to receive signals comprising said combination of the first and second plurality of data streams from the transmitting device via a second plurality of communication links;

determine a channel response matrix for communication of said combination of first and second data streams via said first and second plurality of communication links, the channel response matrix comprising a function of a phase of each of said first and second plurality of communication links; and

optimize a link capacity of said first and second plurality of communication links, said optimizing comprising changing a phase center of the antenna array of each of the first and second transceivers by activating one or more antennas in each array in order to optimize said function of the phase of each of said first and second plurality of communication links in said determined channel response matrix.

14. The communication device according to claim 13, wherein said one or more processors are configured to determine a range for said function of the phase of each of said first and second plurality of communication links over which said optimization is acceptable.

15. The communication device according to claim 14, wherein the function of the phase is a sum of the phase of each of said first and second plurality of communication links, wherein said one or more processors are further configured to adjust the sum based on said determined range for said function of the phase over which said optimization is acceptable.

16. The communication device according to claim 14, wherein said one or more processors are further configured to adjust said determined range for said function of the phase based on a signal to noise ratio on said first plurality of communication links and said second communication links.

17. The communication device according to claim 14, wherein said one or more processors are further configured to determine said range for said function of the phase over which said optimization is acceptable based on one or more of training signals and pilot signals communicated via said first plurality of communication links and said second plurality of communication links.

18. The communication device according to claim 14, wherein said one or more processors are further configured to dynamically and/or adaptively displace one or more of said first distributed transceiver, the antenna array of said first distributed transceiver, said second distributed transceiver, and the antenna array of said second distributed transceiver to satisfy said determined range of said function of the phase over which said optimization is acceptable.

19. The communication device according to claim 18, wherein said displacement of said first one or more of said distributed transceiver, said antenna of said first distributed transceiver, said second distributed transceiver, and said antenna array of said second distributed transceiver occurs spatially in one or more of x-coordinate, y-coordinate and z-coordinate.

20. The communication device according to claim 14, wherein said one or more processors are further configured to dynamically and/or adaptively control one of an adjustment of a phase center of the antenna array of said first distributed transceiver and an adjustment of a phase center of the antenna array of said second distributed transceiver to satisfy said determined range of said function of the phase over which said optimization is acceptable.

21. The communication device according to claim 13, wherein said first plurality of data streams and said second plurality of data streams comprise different polarizations.

22. The communication device according to claim 13, wherein said first plurality of data streams and said second plurality of data streams comprise similar polarizations.

23. The communication device of claim 13, wherein optimizing the said function of the phase of each of said first and second plurality of communication links comprises minimizing said function of the phase of each of said first and second plurality of communication links.

24. The communication device of claim 13, wherein each antenna array is associated with a phase shifter, wherein said configuring the antenna array of the first distributed transceiver comprises adjusting a pattern of the antenna array of the first distributed transceiver using the phase shifter associated with the antenna array of the first distributed transceiver, wherein said configuring the antenna array of the second distributed transceiver comprises adjusting a pattern of the antenna array of the second distributed transceiver using the phase shifter associated with the antenna array of the second distributed transceiver.