Apparatus and method for modular multi-sector active antenna system

• US 9,209,523 B2
• Filed: 02/22/2013
• Issued: 12/08/2015
• Est. Priority Date: 02/24/2012
• Status: Active Grant

• Current Assignee: Futurewei Technologies Incorporated (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Futurewei Technologies Incorporated (Huawei Investment & Holding Co., Ltd.)
• Inventors: Ma, Zhengxiang, Piazzi, Leonard, Pierides, Alexis
• Primary Examiner(s): PHAN, THO GIA
• Application Number:
  US13/774,945
• Publication Number:
  US 20130225222A1
• Time in Patent Office: 1,019 Days
• Field of Search: 342/361, 342/368, 342/174, 342/372, 343/890, 343/891, 343/892, 343/893, 343/853, 455/517
• US Class Current: 1/1
• CPC Class Codes: H01Q 1/02 Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 1/42 Housings not intimately mechanically associated with radiating elements, e.g. radome
• CPC Class Codes: H01Q 19/10 using reflecting surfaces
• CPC Class Codes: H01Q 19/106 using two or more intersecting plane surfaces, e.g. corner reflector antennas
• CPC Class Codes: H01Q 21/205 providing an omnidirectional coverage turnstile aerials H01Q21/26
• CPC Class Codes: H01Q 3/26 varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture H01Q3/12, H01Q3/22, H01Q3/24 take precedence
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems

Abstract

Multiple radio frequency (RF) modules can be arranged in a multi-sector configuration. Each RF modules may have a wedge-like shape such that the RF modules may be adjacently affixed to one another in spherical cluster, thereby providing multi-sector coverage while maintaining a relatively compact active antenna installation. Additionally, multiple clusters of RF modules can be arranged in an array to provide beamforming and/or other advances antenna functionality.

Claims

1. A multi-sector antenna comprising:

a cluster of radio frequency (RF) modules configured for wireless communication, wherein at least some RF modules in the cluster of RF modules are configured to provide wireless coverage to different sectors in a plurality of sectors in a coverage area of the multi-sector antenna.

2. The multi-sector antenna of claim 1, wherein RF modules in the cluster of RF modules are mounted adjacently to one another such that a radiating face of each respective RF module faces outwardly and away from other RF modules in the cluster of RF modules.

3. The multi-sector antenna of claim 1, wherein each RF module in the cluster of RF modules is configured to provide wireless coverage to a different one of the plurality of sectors.

4. The multi-sector antenna of claim 3, wherein the multi-sector antenna is configured to provide 360 degrees of wireless coverage.

5. The multi-sector antenna of claim 4, wherein the cluster of RF modules includes three RF modules each of which providing wireless coverage to a different sector spanning about 120 degrees.

6. The multi-sector antenna of claim 4, wherein the cluster of RF modules includes four RF modules each of which providing wireless coverage to a different sector spanning about 90 degrees.

7. The multi-sector antenna of claim 3, wherein the multi-sector antenna is configured to provide 180 degrees of wireless coverage.

8. The multi-sector antenna of claim 7, wherein the cluster of RF modules includes two RF modules each of which providing wireless coverage to a different sector spanning about 90 degrees.

9. The multi-sector antenna of claim 1 further comprising:

a common module coupled to each of the plurality of RF modules.

10. The multi-sector antenna of claim 9, wherein the common module is configured to provide baseband processing for the multi-sector antenna.

11. The multi-sector antenna of claim 9, wherein the common module is configured to provide beam-forming functionality for the multi-sector antenna.

12. An active antenna system (AAS) for providing wireless access to a plurality of sectors, the AAS comprising:

a backplane structure; and

a plurality of radio frequency (RF) modules affixed to the backplane structure,

wherein at least one RF module in the plurality of RF modules is configured to provide wireless coverage to a different one of the plurality of sectors than another RF module in the plurality of RF modules.

13. The AAS of claim 12, wherein the plurality of RF modules includes a first cluster of RF modules, wherein RF modules in the first cluster of RF modules are mounted adjacently to one another, and wherein a first RF module in the first cluster of RF modules is configured to serve a different one of the plurality of sectors than a second RF module in the first cluster of RF modules.

14. The AAS of claim 13, wherein the AAS is configured to provide 360 degrees of wireless coverage.

15. The AAS of claim 14, wherein the first cluster of RF modules includes three RF modules each of which providing wireless coverage to a different sector spanning about 120 degrees.

16. The AAS of claim 14, wherein the first cluster of RF modules includes four RF modules each of which providing wireless coverage to a different sector spanning about 90 degrees.

17. The AAS of claim 13, further comprising a common module configured to is configured to provide baseband processing for the AAS.

18. The AAS of claim 13, wherein the plurality of RF modules includes a second cluster of RF modules.

19. The AAS of claim 18, wherein the first cluster of RF modules and the second cluster of RF modules are arranged in arrayed configuration such that a first sector in the plurality of sectors is served by both an RF module in the first cluster of RF modules and an RF module in the second cluster of RF modules.

20. The AAS of claim 19, further comprising a common module coupled to RF modules in both the first cluster of RF modules and the second cluster of RF modules,

wherein the common module is configured to select beamforming weight parameters for a beamforming transmission to a user equipment (UE) positioned in the first sector, and to communicate the beamforming weight parameters to the RF module in the first cluster of RF modules and the RF module in the second cluster of RF modules.

21. A method comprising:

communicating, by an active antenna system (AAS), data with wireless devices positioned within a plurality of sectors in a multi-sector coverage area of the AAS, wherein the AAS includes a plurality of radio frequency (RF) modules, and wherein at least one RF module in the plurality of RF modules is configured to serve a different one of the plurality of sectors than another RF module in the plurality of RF modules.

22. The method of claim 21, wherein communicating data with wireless devices positioned within the plurality of sectors of the multi-sector coverage area comprises:

communicating, by a first RF module, data with a first group of one or more wireless devices positioned within a first sector in the plurality of sectors of the multi-sector coverage area; and

communicating, by a second RF module, data with a second group of one or more wireless devices positioned within a second sector in the plurality of sectors of the multi-sector coverage area.

23. The method of claim 22, wherein the first sector and the second sector are different sectors within the multi-sector coverage area.

24. The method of claim 22, wherein the first group of one or more wireless devices exclude wireless devices located outside of the first sector, and wherein the second group of one or more wireless devices exclude wireless devices located outside of the second sector.

25. The method of claim 21, wherein the first RF module is mounted adjacently to the second RF module, and wherein a radiating face of the first RF module faces in a different direction than a radiating face of the second RF module.