Combination of multiple regional beams and a wide-area beam provided by a satellite system

• US 20030181159A1
• Filed: 03/22/2002
• Published: 09/25/2003
• Est. Priority Date: 03/22/2002
• Status: Abandoned Application

• Current Assignee: Global Radio Limited (Global Radio Group Limited)
• Original Assignee: Global Radio Limited (Global Radio Group Limited)
• Inventors: Nawar, George, Heinerscheid, Paul, Villevieille, Jean-Marc, Shoamanesh, Ali
• Application Number:
  US10/102,914
• Publication Number:
  US 20030181159A1
• Time in Patent Office: Days
• US Class Current: 455/3.02
• CPC Class Codes: H04H 20/51 specially adapted for satellite broadcast systems
• CPC Class Codes: H04H 2201/19 digital satellite radio [DSR]
• CPC Class Codes: H04H 40/90 specially adapted for satellite broadcast receiving

Abstract

A coverage area for a satellite digital audio broadcasting system is generated using a wide-area beam and at least three other beams. The other beams each have a coverage area that overlaps the coverage area of the wide-area beam. The beams may be generated by a plurality of satellites traveling in highly elliptical orbits. A frequency spectrum including four or more frequency blocks of approximately 1.5 MHz each may be used to transmit media content from the satellites on the beams. The multi-beam system can provide a content distribution blend tailored to specific regions while providing multi-regional content through out the coverage area. For example, the system provides a content distribution blend tailored to regional diversity of Europe through regional beams while providing European “country agnostic” or “supra-national” content to all users through the wide-area beam.

Claims

1. A digital audio broadcasting satellite system coverage area comprising:

a wide-area beam providing a wide-area coverage area; and

at least three beams, each of the at least three beams providing a coverage area overlapping the wide-area beam coverage area, wherein each of the three beams provides distinct media content to distinct regions within a system coverage area.

2. The system coverage area of claim 1, wherein the distinct media content includes media content different than the media content provided by the wide-area beam.

3. The system coverage area of claim 2, wherein the at least three beams comprises five beams, each providing a coverage area overlapping the wide-area beam.

4. The system coverage area of claim 2, wherein the at least three beams comprises six beams, each providing a coverage area overlapping the wide-area beam.

5. The system coverage area of claim 1, wherein the coverage area for each of the at least three beams overlaps the coverage area for at least one other beam of the at least three beams.

6. The system coverage area of claim 1, wherein a plurality of satellites traveling in highly elliptical orbits are used to generate the wide-area beam and the at least three beams.

7. The system coverage area of claim 1, wherein four or more frequency blocks, each having a bandwidth of approximately 1.5 MHz, are used by the wide-area beam and the at least three beams to transmit media content.

8. The system coverage area of claim 7, wherein a plurality of repeaters are used to transmit media content from the wide-area beam and the at least three beams to areas within the system coverage area.

9. The system coverage area of claim 8, wherein the repeaters, the wide-area beam and the at least three beams reuse frequencies within the four or more frequency blocks to transmit media content.

10. The system coverage area of claim 2, wherein the at least three beams comprises four beams, each providing a coverage area overlapping the wide-area beam.

11. The system coverage area of claim 2, wherein the at least three beams comprises seven beams, each providing a coverage area overlapping the wide-area beam.

12. The system coverage area of claim 2, wherein the at least three beams comprises eight beams, each providing a coverage area overlapping the wide-area beam.

13. A digital audio broadcasting satellite system having a system coverage area, the system comprising:

a plurality of satellites traveling in highly elliptical orbits, the plurality of satellites including at least one satellite transmitting a wide-area beam including media content, the wide-area beam providing a wide-area coverage area, and at least one satellite transmitting at least three beams, each of the at least three beams providing a coverage area overlapping the wide-area beam coverage area, wherein each of the three beams provides distinct media content to distinct regions within the system coverage area;

a plurality of repeaters receiving the media content from the plurality of satellites and transmitting the media content in the system coverage area; and

a plurality of receivers receiving the media content from one or more of at least one of the plurality of satellites and at least one of the plurality of repeaters.

14. The system of claim 13, wherein the plurality of satellites transmit the media content in a frequency spectrum having four or more frequency blocks, each having a bandwidth of approximately 1.5 MHz.

15. The system of claim 14, wherein the plurality of repeaters transmit the media content in the frequency spectrum.

16. The system of claim 15, wherein the plurality of satellites and the plurality of repeaters reuse frequencies within the frequency spectrum to transmit the media content.

17. The system of claim 13, wherein the at least three beams comprises five beams, each providing a coverage area overlapping the wide-area coverage area.

18. The system of claim 13, wherein the at least three beams comprises six beams, each providing a coverage area overlapping the wide-area beam.

19. The system of claim 13, wherein the at least three beams comprise four beams, each providing a coverage area overlapping the wide-area beam.

20. The system of claim 13, wherein the at least three beams comprise seven beams, each providing a coverage area overlapping the wide-area beam.

21. The system of claim 13, wherein the at least three beams comprise eight beams, each providing a coverage area overlapping the wide-area beam.

22. The system of claim 13, wherein the coverage area for each of the at least three beams overlaps the coverage area for at least one other beam of the at least three beams.

23. A method of generating a system coverage area for a digital audio broadcasting satellite system, the method comprising steps of:

selecting a frequency spectrum for transmitting media content from a plurality of satellites;

transmitting a wide-area beam providing a wide-area coverage area; and

transmitting at least three beams, each of the at least three beams providing a coverage area overlapping the wide-area beam coverage area, wherein each of the three beams provides distinct media content to distinct regions within the system coverage area.

24. The method of claim 23, wherein the system includes a plurality of repeaters and the method further comprises a step of transmitting in the selected frequency spectrum the media content received from the plurality of satellites from the plurality of repeaters.

25. The method of claim 24, further comprising reusing frequencies in the frequency spectrum for transmitting the media content.

26. The method of claim 23, wherein the frequency spectrum comprises four or more frequency blocks, each having a bandwidth of approximately 1.5 MHz.

27. A digital audio broadcasting satellite system comprising a plurality of satellites, wherein at least one of the plurality of satellites transmits a first wide-area beam providing media content to a first geographical area, and at least one of the plurality of satellites transmits at least two beams to a second and a third geographical area respectively, wherein the at least two beams provide media content distinct from the media content provided from the first beam, and the second and third geographical areas overlap the first geographical area.

28. The system of claim 27, wherein the media content provided by the first beam comprises general programming for digital audio broadcasting.

29. The system of claim 28, wherein the media content provided by the at least two beams comprises regional programming for digital audio broadcasting, the regional programming being associated with the second geographical area.

30. The system of claim 27, wherein each of the second and third geographical areas are smaller than the first geographical area.

31. The system of claim 27, wherein the at least two beams comprise at least six beams transmitting distinct media content to at least six distinct geographical areas, each of the at least six geographical areas overlapping the first geographical area.

32. The system of claim 27, wherein the at least two beams comprise four beams transmitting distinct media content to at least four distinct geographical areas, each of the four geographical areas overlapping the first geographical area.

33. The system of claim 27, wherein the at least two beams comprise five beams transmitting distinct media content to at least five distinct geographical areas, each of the five geographical areas overlapping the first geographical area.

34. The system of claim 27, wherein the at least two beams comprise seven beams transmitting distinct media content to at least seven distinct geographical areas, each of the seven geographical areas overlapping the first geographical area.

35. The system of claim 27, wherein the at least two beams comprise at least eight beams transmitting distinct media content to at least eight distinct geographical areas, each of the at least eight geographical areas overlapping the first geographical area.

36. A digital audio broadcasting satellite system coverage area comprising:

a wide-area beam providing a wide-area coverage area; and

at least two beams having coverage areas smaller than the wide-area beam, wherein each of the at least three beams provides a coverage area overlapping the wide-area beam coverage area, the overlapping coverage area receiving media content from each of the beams providing the overlapping coverage area;

wherein each of the three beams provides distinct media content to distinct regions within the system coverage area;

wherein the distinct media content includes media content different than the media content provided by the wide-area beam; and

wherein the coverage area for each of the at least three beams overlaps the coverage area for at least one other beam of the at least three beams.

37. The coverage area of claim 36, wherein a plurality of satellites traveling in highly elliptical orbits are used to generate the wide-area beam and the at least three beams.

38. The coverage area of claim 37, wherein four or more frequency blocks, each having a bandwidth of approximately 1.5 MHz, are used by the wide-area beam and the at least three beams to transmit the media content.

39. The coverage area of claim 37, wherein a plurality of repeaters are used to transmit media content from the wide-area beam and the at least three beams to areas within the system coverage area, and wherein

the repeaters, the wide-area beam and the at least three beams reuse frequencies within the four or more frequency blocks to transmit media content.

40. The coverage area of claim 36, wherein a plurality of receivers receive the media content from the wide area beam and the at least three beams.

41. The coverage area of claim 40, wherein a receiver of the plurality of receivers in the overlapping coverage area receives media content from each of the beams providing the overlapping coverage area.