Internet based digital satellite radio system and associated methods for providing indoor reception

• US 7,620,365 B2
• Filed: 08/30/2005
• Issued: 11/17/2009
• Est. Priority Date: 08/30/2005
• Status: Expired due to Fees

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Gorsuch, Thomas E., Hoffmann, John E.
• Primary Examiner(s): Harper; Vincent P
• Assistant Examiner(s): NGUYEN, KHAI MINH
• Application Number:
  US11/215,148
• Publication Number:
  US 20070047475A1
• Time in Patent Office: 1,540 Days
• Field of Search: 455/3.02, 455/3.05, 455/427, 455/12.1, 455/3.01, 455/11.1, 455/13.1, 370/315, 370/316
• US Class Current: 455/12.1
• CPC Class Codes: H04B 7/15 Active relay systems
• CPC Class Codes: H04B 7/185 Space-based or airborne stations; Stations for satellite systemsH04B7/204 takes precedence

Abstract

A digital satellite radio system includes a content server for providing digital satellite radio channels, a satellite for broadcasting the digital satellite radio channels, and a terrestrial repeater for broadcasting the digital satellite radio channels. A micro-repeater receives a selected digital satellite radio channel from the content server via the Internet while not receiving unselected digital satellite radio channels, and wirelessly broadcasts the selected digital satellite radio channel in a different waveform as used by the terrestrial repeater but using a same physical layer. A digital satellite radio unit receives the selected digital satellite radio channel from the micro-repeater while not receiving the unselected digital satellite radio channels.

Claims

1. A digital satellite radio system comprising:

a content server for providing a plurality of digital satellite radio channels;

at least one satellite for broadcasting the plurality of digital satellite radio channels;

at least one terrestrial repeater for broadcasting the plurality of digital satellite radio channels;

at least one microrepeater for receiving a selected digital satellite radio channel from said content server while not receiving unselected digital satellite radio channels, and wirelessly broadcasting the selected digital satellite radio channel in a different waveform as used by said at least one terrestrial repeater but using a same physical layer, the selected digital satellite radio channel having either a first frequency corresponding to a first ensemble of channels or a second frequency corresponding to a second ensemble of channels;

at least one digital satellite radio unit for receiving the plurality of digital satellite radio channels from said at least one satellite and said at least one terrestrial repeater, and for receiving the selected digital satellite radio channel from said at least one microrepeater while not receiving the unselected digital satellite radio channels; and

wherein if said at least one micro-repeater detects an adjacent micro-repeater transmitting on the first or second frequency, then said at least one micro-repeater changes the frequency of the selected digital satellite radio channel for said at least one digital satellite radio unit so that it is different from the frequency used by the adjacent micro-repeater.

2. A satellite radio system according to claim 1 wherein the same physical layer as used by said at least one terrestrial repeater is based upon coded orthogonal frequency division multiplexing.

3. A satellite radio system according to claim 1 wherein said at least one micro-repeater is connected to the Internet for receiving digital satellite radio channels from said content server.

4. A satellite radio system according to claim 3 wherein said at least one microrepeater is connected to the Internet via a local area network (LAN)

5. A satellite radio system according to claim 4 wherein said LAN comprises a wireless LAN.

6. A satellite radio system according to claim 1 wherein said at least one micro-repeater broadcasts jamming data to said at least one digital satellite radio unit for preventing reception of the plurality of digital satellite radio channels from said at least one satellite while also broadcasting the selected digital satellite radio channel.

7. A satellite radio system according to claim 6 wherein the jamming data corrupts a check sum performed by said at least one digital satellite radio unit on the plurality of digital satellite radio channels received from said at least one satellite.

8. A satellite radio system according to claim 6 wherein the jamming data corrupts a forward error correction scheme performed by said at least one digital satellite radio unit on the plurality of digital satellite radio channels received from said at least one satellite.

9. A satellite radio system according to claim 1 wherein said at least one digital satellite radio unit comprises a receive only digital satellite radio unit.

10. A satellite radio system according to claim 1 further comprising a remote control for communicating with said at least one micro-repeater for selecting the digital satellite radio channel received by said at least one digital satellite radio unit.

11. A satellite radio system according to claim 1 further comprising a cellular telephone for communicating with said at least one micro-repeater for selecting the digital satellite radio channel received by said at least one digital satellite radio unit.

12. A satellite radio system according to claim 11 wherein said cellular telephone is integrated with said at least one digital satellite radio unit.

13. A method for operating a digital satellite radio system comprising:

providing a plurality of digital satellite radio channels by a content server;

broadcasting the plurality of digital satellite radio channels by at least one satellite;

broadcasting the plurality of digital satellite radio channels by at least one terrestrial repeater;

providing a selected digital satellite radio channel to at least one micro-repeater from the content server while not receiving unselected digital satellite radio channels, and wirelessly broadcasting the selected digital satellite radio channel in a different waveform as used by the at least one terrestrial repeater but using a same physical layer, the selected digital satellite radio channel having either a first frequency corresponding to a first ensemble of channels or a second frequency corresponding to a second ensemble of channels;

receiving the selected digital satellite radio channel by the at least one digital satellite radio unit from the at least one microrepeater while not receiving the unselected digital satellite radio channels; and

wherein if the at least one micro-repeater detects an adjacent micro-repeater transmitting on the first or second frequency, then the at least one micro-repeater changes the frequency of the selected digital satellite radio channel for the at least one digital satellite radio unit so that it is different from the frequency used by the adjacent micro-repeater.

14. A method according to claim 13 wherein the same physical layer as used by the at least one terrestrial repeater is based upon coded orthogonal frequency division multiplexing.

15. A method according to claim 13 wherein the at least one micro-repeater is connected to the Internet for receiving digital satellite radio channels from the content server.

16. A method according to claim 15 wherein the at least one micro-repeater is connected to the Internet via a local area network (LAN).

17. A method according to claim 16 wherein the LAN comprises a wireless LAN.

18. A method according to claim 13 wherein the at least one micro-repeater broadcasts jamming data to the at least one digital satellite radio unit for preventing reception of the plurality of digital satellite radio channels from the at least one satellite while also broadcasting the selected digital satellite radio channel.

19. A method according to claim 18 wherein the jamming data corrupts a check sum performed by the at least one digital satellite radio unit on the plurality of digital satellite radio channels received from the at least one satellite.

20. A method according to claim 18 wherein the jamming data corrupts a forward error correction scheme performed by the at least one digital satellite radio unit on the plurality of digital satellite radio channels received from the at least one satellite.

21. A method according to claim 13 wherein the at least one digital satellite radio unit comprises a receive only digital satellite radio unit.

22. A method according to claim 13 wherein the digital satellite radio system further comprises a remote control communicating with the at least one micro-repeater for selecting the digital satellite radio channel received by the at least one digital satellite radio unit.

23. A method according to claim 13 wherein the digital satellite radio system further comprises a cellular telephone for communicating with the at least one micro-repeater for selecting the digital satellite radio channel received by the at least one digital satellite radio unit.

24. A method according to claim 23 wherein the cellular telephone is integrated with the at least one digital satellite radio unit.