Telecommunications radio system for mobile communication services

• US 20050186990A1
• Filed: 07/18/2003
• Published: 08/25/2005
• Est. Priority Date: 07/22/2002
• Status: Active Grant

• Current Assignee: Koninklijke KPN NV
• Original Assignee: Koninklijke KPN NV
• Inventors: Herbert, Germar Jochem, Klomp, Martin Willem
• Granted Patent: US 7,221,962 B2
• Time in Patent Office: Days
• US Class Current: 455/561
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 21/205 providing an omnidirectional coverage turnstile aerials H01Q21/26
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 25/00 Antennas or antenna systems providing at least two radiating patterns arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00
• CPC Class Codes: H04W 16/24 Cell structures
• CPC Class Codes: H04W 16/28 using beam steering

Abstract

The invention relates to a telecommunications radio system for mobile communication services. More specifically, the invention relates to covering large sectorized areas for mobile communication services.

Claims

1. Telecommunications radio system for mobile communication services comprising at least one base station, the base station comprising at least two antennas, the base station being located at a site, the base station covering an area, the area being subdivided into a multitude of sectors by the at least two antennas,

wherein

the site is a high structure with a height of at least 50 m from erection ground,

the base station is located on the site at a height of at least 50 m from erection ground and

the at least two antennas are arranged in a first concentric ring in a first orthogonal plane of the longitudinal axis of the site.

2. Telecommunications radio system according to claim 1 in which the height of the site is in the range of 90 m to 320 m from erection ground and the base station is located on the site at a height in the range of 90 m to 320 m from erection ground.

3. Telecommunications radio system according to claim 2 in which each sector is served by a separate antenna.

4. Telecommunications radio system according to claim 2 in which the multitude of sectors are served by one or more phase-controlled antenna.

5. Telecommunications radio system according to claim 4 in which there are at least six sectors.

6. Telecommunications radio system according to claim 4 in which there are at least 12 sectors.

7. Telecommunications radio system according to claim 4 in which there are at least 24 sectors.

8. Telecommunications radio system according to claim 4 in which there are at least 48 sectors.

9. Telecommunications radio system according to claim 8 in which one or more antennas are arranged in a second concentric ring in a second orthogonal plane of the longitudinal axis of the site, the second concentric ring having a larger diameter than the first concentric ring.

10. Telecommunications radio system according to claim 9 in which the first orthogonal plane is the same as the second orthogonal plane.

11. Telecommunications radio system according to claim 10 in which the number of antennas on the second concentric ring is larger than the number of antennas on the first concentric ring.

12. Telecommunications radio system according to claim 11 in which the horizontal angular range of the antennas on the second concentric ring is smaller than the horizontal angular range of the antennas on the first concentric ring.

13. Telecommunications radio system according to claim 12 in which the vertical aperture angle of the antennas on the first concentric ring is in the range of 8 to 12 degrees, preferably 10 degrees.

14. Telecommunications radio system according to claim 13 in which the vertical aperture angle of the antennas on the second concentric ring is in the range of 3 to 6.5 degrees, preferably 5 degrees.

15. Telecommunications radio system according to claim 14 in which the area is being subdivided into 24 sectors by antennas on the first concentric ring and 72 sectors by antennas on the second concentric ring.

16. Telecommunications radio system according to claim 15 in which the shape and/or size of one or more sectors can be changed by switching on or off one or more antennas.

17. Telecommunications radio system according to claim 15 in which the shape and/or size of one or more sectors can be changed by changing the horizontal angular range of one or more antennas.

18. Telecommunications radio system according to claim 15 in which the shape and/or size of one or more sectors can be changed by changing the vertical aperture angle of one or more antennas.

19. Telecommunications radio system according to claim 18 in which at least one antenna is arranged in a third orthogonal plane of the longitudinal axis of the site to cover an area in the proximity zone of the site, the third orthogonal plane being located below a height of 50 m.

20. Telecommunications radio system according to claim 19 in which the total number of sectors needed to cover the area is calculated as a function of the size of each sector and the required field strength in each sector.

21. Telecommunications radio system according to claim 20 in which all antennas operate at one frequency.

22. Telecommunications radio system according to claim 21 in which a conventional bases station operating at a different frequency is placed within the area for handling local high volumes of traffic.

23. Base station for use in a telecommunications radio system, the base station comprising at least two antennas, the base station being located at a site, the base station covering an area, the area being subdivided into a multitude of sectors by the at least two antennas,

wherein

the site is a high structure with a height of at least 50 m from erection ground,

the base station is located on the site at a height of at least 50 m from erection ground and

the at least two antennas are arranged in a first concentric ring in a first orthogonal plane of the longitudinal axis of the site.

24. Antenna for use in a base station for use in a telecommunications radio system for mobile communication services, the base station being located at a site, the base station covering an area, the area being subdivided into a multitude of sectors, at least one of the sectors being served by the antenna,

wherein

the site is a high structure with a height of at least 50 m from erection ground,

the base station is located on the site at a height of at least 50 m from erection ground and

the antenna and at least one other antenna being arranged in a first concentric ring in a first orthogonal plane of the longitudinal axis of the site.

25. Mobile network comprising a telecommunications radio system for mobile communication services comprising at least one base station, the base station comprising at least two antennas, the base station being located at a site, the base station covering an area, the area being subdivided into a multitude of sectors by the at least two antennas,

wherein

the site is a high structure with a height of at least 50 m from erection ground,

the base station is located on the site at a height of at least 50 m from erection ground and

the at least two antennas are arranged in a first concentric ring in a first orthogonal plane of the longitudinal axis of the site.