Methods and apparatus for overlapping MIMO antenna physical sectors

• US 8,111,678 B2
• Filed: 08/17/2011
• Issued: 02/07/2012
• Est. Priority Date: 02/28/2006
• Status: Expired due to Fees

• Current Assignee: Woodbury Wireless LLC
• Original Assignee: Rotani, Inc.
• Inventors: Lastinger, Roc, Spenik, John, Woodbury, Brian
• Primary Examiner(s): LY, NGHI H
• Application Number:
  US13/211,529
• Publication Number:
  US 20110299619A1
• Time in Patent Office: 174 Days
• Field of Search: 370/338, 370/328, 455/422.1, 455/424, 455/443, 455/452.2
• US Class Current: 370/338
• CPC Class Codes: H04B 17/15 Performance testing
• 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 7/0495 using overlapping sectors in the same base station to implement MIMO for antennas

Abstract

A system for communicating with wireless devices. The systems includes radio groups whose MIMO physical sectors overlap. The MIMO physical sectors communicate using different channels. The MIMO physical sectors overlap to form an area of overlap. Each radio group includes directional antennas and radios. Radios are selectively coupled to the antennas. The antennas that are oriented so that the physical sectors of the antennas overlap to operate as MIMO antennas and form the MIMO physical sector for the radio group. The antennas operate as a MIMO antenna.

Claims

1. A system for wirelessly communicating with provided wireless devices via a plurality of multiple-input-multiple-output (“

MIMO”

) antennas, the system comprising;

a first radio group comprising a first MIMO physical sector for communicating using a first channel; and

a second radio group comprising a second MIMO physical sector for communicating using a second channel;

wherein;

the first MIMO physical sector at least partially overlaps the second MIMO physical sector thereby forming an area of overlap;

the first channel is different from the second channel;

each radio group respectively further comprises;

at least two directional antennas; and

at least two radios, each radio selectively couples to at least one antenna, a physical sector of each antenna coupled to one radio is positioned to at least partially overlap the physical sector of each antenna coupled to the other radios thereby forming the MIMO physical sector of the radio group, the antennas coupled to the at least two radios operate as a MIMO antenna.

2. The system of claim 1 wherein the first MIMO physical sector substantially overlaps the second MIMO physical sector thereby forming the area of overlap.

3. The system of claim 1 wherein the physical sector of each antenna coupled to one radio is positioned to substantially overlap the physical sector of each antenna coupled to the other radios.

4. The system of claim 2 wherein the physical sector of each antenna coupled to one radio is positioned to substantially overlap the physical sector of each antenna coupled to the other radios.

5. The system of claim 1 wherein the at least two directional antennas of at least one of the first radio group and the second radio group comprises a phased array.

6. The system of claim 1 wherein:

the first radio group communicates with a first provided wireless device via the first MIMO physical sector in the area of overlap using the first channel; and

the second radio group communicates with a second provided wireless device via the second MIMO physical sector in the area of overlap using the second channel.

7. A system for wirelessly communicating with provided wireless devices via a plurality of multiple-input-multiple-output (“

MIMO”

) antennas, the system comprising;

a first radio group comprising a first MIMO physical sector for communicating using a first channel; and

a second radio group comprising a second MIMO physical sector for communicating using a second channel;

wherein;

the first MIMO physical sector at least partially overlaps the second MIMO physical sector thereby forming an area of overlap;

the first channel is different from the second channel;

each radio group respectively further comprises;

at least three antennas; and

at least two radios, each radio selectively couples to at least one antenna, a physical sector of each antenna coupled to one radio is positioned to at least partially overlap the physical sector of each antenna coupled to the other radios thereby forming the MIMO physical sector of the radio group, the antennas coupled to the at least two radios operate as a MIMO antenna.

8. The system of claim 7 wherein the first MIMO physical sector substantially overlaps the second MIMO physical sector thereby forming the area of overlap.

9. The system of claim 7 wherein the physical sector of each antenna coupled to one radio is positioned to substantially overlap the physical sector of each antenna coupled to the other radios.

10. The system of claim 8 wherein the physical sector of each antenna coupled to one radio is positioned to substantially overlap the physical sector of each antenna coupled to the other radios.

11. The system of claim 7 wherein the at least three directional antennas of at least one of the first radio group and the second radio group comprises a phased array.

12. The system of claim 7 wherein:

the first radio group communicates with a first provided wireless device via the first MIMO physical sector in the area of overlap using the first channel; and

the second radio group communicates with a second provided wireless device via the second MIMO physical sector in the area of overlap using the second channel.

13. A system for wirelessly communicating with provided wireless devices via a plurality of multiple-input-multiple-output (“

MIMO”

) antennas, the system comprising;

a first radio group comprising a plurality of MIMO physical sectors, each MIMO physical sector for communicating using a first channel; and

a second radio group comprising a plurality of MIMO physical sectors, each MIMO physical sector for communicating using a second channel;

wherein;

each MIMO physical sector of the first radio group at least partially overlaps at least one MIMO physical sector of the second radio group thereby forming a plurality of areas of overlap;

the first channel is different from the second channel;

each radio group respectively further comprises;

at least four directional antennas; and

at least two radios, each radio selectively couples to at least two antennas, a physical sector of any one antenna of one radio is positioned to not substantially overlap the physical sector of any other antenna of the same radio, the physical sector of each antenna of one radio positioned to at least partially overlap the physical sector of at least one antenna of each of the other radios thereby forming a respective MIMO physical sector of the plurality of MIMO physical sectors of the radio group, the antennas that form each MIMO physical sector of the plurality of MIMO physical sectors operate as a MIMO antenna.

14. The system of claim 13 wherein the each MIMO physical sector of the first radio group substantially overlaps a respective MIMO physical sector of the second radio group thereby forming the plurality of areas of overlap.

15. The system of claim 13 wherein each radio group respectively comprises two radios and four directional antennas.

16. The system of claim 15 wherein:

the first radio group comprises two MIMO physical sectors;

the second radio group comprises two MIMO physical sectors;

each MIMO physical sector of the first radio group partially overlaps each MIMO physical sector of the second radio group; and

each MIMO physical sector of the second radio group partially overlaps each MIMO physical sector of the first radio group.

17. The system of claim 13 wherein the at least four directional antennas of at least one of the first radio group and the second radio group comprises a phased array.

18. The system of claim 13 wherein the first radio group communicates with a first provided wireless device and the second radio group communicates with a second provided wireless device in a same area of overlap.

19. The system of claim 13 wherein:

the first radio group communicates with a first provided wireless device via one MIMO physical sector of the first radio group using the first channel; and

the second radio group communicates with a second provided wireless device via one MIMO physical sector of the second radio group using the second channel.