Global satellite communication system with geographic protocol conversion

• US 5,008,952 A
• Filed: 11/03/1989
• Issued: 04/16/1991
• Est. Priority Date: 11/03/1989
• Status: Expired due to Term

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Macnak, Philip P., Davis, Walter L.
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): Charouel, Lisa
• Application Number:
  US07/431,105
• Time in Patent Office: 529 Days
• Field of Search: 455/12, 455/13, 455/32, 455/33, 358/140, 340/824.44, 342/350, 342/354, 342/355, 342/356, 370/13.1, 370/16
• US Class Current: 455/427
• CPC Class Codes: H04B 7/18563 Arrangements for interconnecting multiple systems data switching networks H04L12/00
• CPC Class Codes: H04W 84/022 One-way selective calling networks, e.g. wide area paging

Abstract

A satellite paging system is described for providing geogrpahic protocol conversion for data packet delivery to communication receivers located in a plurality of geographic areas. The system includes a transmitter for transmitting data packets formatted in a first predetermined data format to the communication satellite. The satellite includes a receiver for receiving the data packets and a programmable encoder coupled to the receiver for encoding the received data packets into encoded data packets in a second predetermined data format corresponding to the signaling requirements of each geographic delivery area. A satellite transmitter coupled to the programmable encoder then transmits the encoded data packets in the second predetermined data format to a portable communication receiver, operable in the second predetermined data format in the geographic delivery area.

Claims

1. A satellite paging system providing geographic protocol conversion for data packet delivery to a plurality of geographic areas, said satellite based communication system comprising:

transmission means, for transmitting data packets to the communication satellite, the data packets being transmitted in a first predetermined data format;

a satellite having,

satellite receiving means, for receiving the transmitted data packets transmitted in the first predetermined data format;

programmable encoding means, coupled to said receiving means, for encoding the received data packets transmitted in the first predetermined data format into encoded data packets in a second predetermined data format corresponding to the signaling requirements of each geographic delivery area;

satellite transmitting means, coupled to said encoding means, for transmitting the encoded data packets in the second predetermined data format; and

a portable communication receiver, operable in the second predetermined data format in the geographic delivery area, for receiving the encoded data packets transmitted in the second predetermined data format,

whereby data packets transmitted to said satellite in the first predetermined data format are converted within said satellite to the second predetermined data format conforming to the signaling requirements for transmission to said portable communication receiver in the geographic delivery area.

2. The global satellite paging system according to claim 1, further comprising:

memory means, for storing a table correlating correlating the required second predetermined data format to each geographical delivery area; and

controller means, coupled to said programmable encoding means and to said memory means, for controlling the encoding of the data packets received in the first predetermined data format into data packets encoded in the second predetermined signaling format based on the current geographical delivery area.

3. The global satellite paging system according to claim 2, wherein said satellite transmitter means is capable of transmitting on a plurality of frequencies, and said memory means further stores a table correlating transmitter frequency to the geographic location information, and wherein said controller means is further responsive to the geographic location information to transmit the data packets on one or more of the plurality of frequencies for each of the plurality of geographic delivery areas.

4. The global satellite paging system according to claim 1 wherein the data transmitted in the first predetermined data format is ASCII encoded data.

5. The global satellite paging system according to claim 1 wherein the data transmitted in the second predetermined data format is encoded in the POCSAG signaling format.

6. The global satellite paging system according to claim 1 wherein the data transmitted in the second predetermined data format is encoded in the Golay Sequential Code signaling format.

7. The global satellite paging system according to claim 1, wherein said satellite orbits in a synchronous orbit.

8. The global satellite paging system according to claim 7, wherein the satellite paging system includes a plurality of satellites orbiting in synchronous orbits, and each of said satellites further comprising inter-satellite communication means for forwarding the data packet received in the first predetermined data format to an adjacent satellite.

9. A satellite paging system providing geographic protocol conversion for data packet delivery to a plurality of geographic areas, said satellite based communication system comprising:

earth based satellite station, having

receiving means, for receiving information data packets transmitted in a first predetermined data format;

programmable encoding means, coupled to said receiving means, for encoding the received information data packets transmitted in the first predetermined data format into data packets encoded in a second predetermined data format corresponding to the signaling requirements of each geographic delivery area;

transmission means, for transmitting data packets to the communication satellite, the data packets being transmitted in the second predetermined data format;

a satellite having,

satellite receiving means;

for receiving the transmitted data packets transmitted in the first predetermined data format;

satellite transmitting means, coupled to said encoding means, for transmitting the encoded data packets in the second predetermined data format; and

a portable communication receiver, operable in the second predetermined data format in the geographic delivery area, for receiving the encoded data packets transmitted in the second predetermined data format,

whereby data packets received at said earth based satellite station in the first predetermined data format are transmitted to said satellite in the second predetermined data format conforming to the signaling requirements for transmission to said portable communication receiver in the geographic delivery area.

10. The global satellite paging system according to claim 9, further comprising:

memory means, for storing a table correlating correlating the required second predetermined data format to each geographical delivery area; and

controller means, coupled to said programmable encoding means and to said memory means, for controlling the encoding of the data packets received in the first predetermined data format into data packets encoded in the second predetermined signaling format based on the current geographical delivery area.

11. The global satellite paging system according to claim 10, wherein said satellite transmitter means is capable of transmitting on a plurality of frequencies, and said memory means further stores a table correlating transmitter frequency to the geographic location information, and wherein said controller means is further responsive to the geographic location information to transmit the data packets on one or more of the plurality of frequencies for each of the plurality of geographic delivery areas.

12. The global satellite paging system according to claim 9 wherein the data transmitted in the first predetermined data format is ASCII encoded data.

13. The global satellite paging system according to claim 9 wherein the data transmitted in the second predetermined data format is encoded in the POCSAG signaling format.

14. The global satellite paging system according to claim 9 wherein the data transmitted in the second predetermined data format is encoded in the Golay Sequential Code signaling format.

15. The global satellite paging system according to claim 9, wherein said satellite orbits in a synchronous orbit.

16. The global satellite paging system according to claim 15, wherein the satellite paging system includes a plurality of satellites orbiting in synchronous orbits, and each of said satellites further comprising inter-satellite communication means for forwarding the data packet received in the first predetermined data format to an adjacent satellite.

17. A communication satellite providing geographic protocol conversion for data packet delivery to portable communication receivers located in a plurality of geographic areas, comprising:

satellite receiving means;

for receiving data packets transmitted in a first predetermined data format;

programmable decoding means, coupled to said satellite receiving means, for decoding the received data packets transmitted in the first predetermined data format to provide decoded data packets;

programmable encoding means, coupled to said decoding means, for encoding the decoded data packets into data packets encoded in a second predetermined signaling format corresponding to the signaling requirements of each geographic delivery area; and

satellite transmitting means, coupled to said encoding means, for transmitting the data packets encoded in the second predetermined signaling format;

whereby packetized data received by the satellite in a first predetermined signaling format is converted within the satellite to a second predetermined signaling format for data packet retransmission conforming to the signaling requirements for transmission to the portable communication receivers in the geographic delivery area.

18. The communication satellite according to claim 17, further comprising:

memory means, for storing a table correlating correlating the required second predetermined data format to each geographical delivery area; and

controller means, coupled to said programmable encoding means and to said memory means, for controlling the encoding of the data packets received in the first predetermined data format into data packets encoded in the second predetermined signaling format based on the current geographical delivery area.

19. The communication satellite according to claim 17, further comprising:

satellite timing means, for generating timing information signals;

memory means, for storing a table correlating the timing information signals to the plurality of geographic delivery areas, said memory means further for storing a table correlating the required second predetermined data format to each geographical delivery area; and

controller means, coupled to said programmable encoding means and to said memory means, and responsive to the timing information signals, for determining the current geographical delivery area, said controller means further for controlling the encoding of the data packets received in the first predetermined data format into data packets encoded in the second predetermined signaling format based on the current geographical delivery area.

20. The communication satellite according to claim 18, wherein said satellite transmitter means is capable of transmitting on a plurality of frequencies, and said memory means further stores a table correlating transmitter frequency to the geographic location information, and wherein said controller means is further responsive to the geographic location information to transmit the data packets on one or more of the plurality of frequencies for each of the plurality of geographic delivery areas.

21. The communication satellite according to claim 19, wherein said satellite transmitter means is capable of transmitting on a plurality of frequencies, and said memory means further stores a table correlating transmitter frequency to the geographic location information, and wherein said controller means is further responsive to the geographic location information to transmit the data packets on one or more of the plurality of frequencies for each of the plurality of geographic delivery areas.

22. The communication satellite according to claim 17 wherein the data transmitted in the first predetermined data format is ASCII encoded data.

23. The communication satellite according to claim 17 wherein the data transmitted in the second predetermined data format is encoded in the POCSAG signaling format.

24. The communication satellite according to claim 17 wherein the data transmitted in the second predetermined data format is encoded in the Golay Sequential Code signaling format.

25. The communication satellite according to claim 17, wherein the satellite paging system includes a plurality of satellites.

26. The communication satellite according to claim 25, wherein said plurality of satellites orbit in synchronous orbits.

27. The communication satellite according to claim 26, wherein each of said satellites further comprising inter-satellite communication means for forwarding the data packet received in the first predetermined data format to an adjacent satellite.

28. The communication satellite according to claim 25, wherein said plurality of satellite orbit in non-synchronous orbits.

29. The communication satellite according to claim 28, wherein each of said satellites further comprising inter-satellite communication means for forwarding the data packet received in the first predetermined data format to an adjacent satellite.

30. A global satellite paging system providing geographic protocol conversion for data packet delivery to a plurality of geographic areas, each of the plurality of geographical areas requiring data packet transmission in one of a plurality of different signaling formats, said satellite based communication system comprising:

earth based satellite station, having

receiving means, for receiving information data packets transmitted in a first predetermined data format;

programmable encoding means, coupled to said receiving means, for encoding the received information data packets transmitted in the first predetermined data format into data packets encoded in a second predetermined data format corresponding to the signaling requirements for each geographic delivery area;

transmission means, for transmitting the encoded data packets to a predetermined one of the plurality of communication satellites, the data packets being transmitted in the second predetermined data format;

a plurality of satellites orbiting in the plurality of predetermined orbital planes, each having

satellite receiving means;

for receiving the transmitted data packets transmitted in the second predetermined data format;

satellite transmitting means, coupled to said satellite receiving means, for transmitting the encoded data packets in the second predetermined data format; and

a portable communication receiver, operable in the second predetermined data format in the geographic delivery area, for receiving the encoded data packets transmitted in the second predetermined data format,

whereby data packets received at said earth based satellite station in a first predetermined data format are converted to the second predetermined data format conforming to the requirements for transmission to said portable communication receiver in the geographic delivery area.

31. The global satellite paging system according to claim 30, further comprising:

satellite timing means, for generating timing information signals;

memory means, for storing a table correlating the timing information signals to the plurality of geographic delivery areas, said memory means further for storing a table correlating the required second predetermined data format to each geographical delivery area; and

controller means, coupled to said programmable encoding means and to said memory means, and responsive to the timing information signals, for determining the current geographical delivery area, said controller means further for controlling the encoding of the data packets received in the first predetermined data format into data packets encoded in the second predetermined signaling format based on the current geographical delivery area.

32. The global satellite paging system according to claim 31, wherein said satellite transmitter means is capable of transmitting on a plurality of frequencies, and said memory means further stores a table correlating transmitter frequency to the geographic location information, and wherein said controller means is further responsive to the geographic location information to transmit the data packets on one or more of the plurality of frequencies for each of the plurality of geographic delivery areas.

33. The global satellite paging system according to claim 30 wherein the data transmitted in the first predetermined data format is ASCII encoded data.

34. The global satellite paging system according to claim 30 wherein the data transmitted in the second predetermined data format is encoded in the POCSAG signaling format.

35. The global satellite paging system according to claim 30 wherein the data transmitted in the second predetermined data format is encoded in the Golay Sequential Code signaling format.

36. The global satellite paging system according to claim 30, wherein said plurality of satellite orbit in non-synchronous orbits.

37. The global satellite paging system according to claim 36, wherein each of said satellites further comprising inter-satellite communication means for forwarding the data packet received in the first predetermined data format to an adjacent satellite.

38. A global satellite paging system providing geographic protocol conversion for data packet delivery to a plurality of geographic areas, each of the plurality of geographical areas requiring data packet transmission in one of a plurality of different signaling formats, said satellite based communication system comprising:

earth based satellite station, having

receiving means, for receiving information data packets transmitted in a first predetermined data format;

transmission means, for transmitting the received data packets to a predetermined one of the plurality of communication satellites, the data packets being transmitted in the first predetermined data format;

a plurality of satellites orbiting in the plurality of predetermined orbital planes, each having

satellite receiving means;

for receiving the transmitted data packets transmitted in the first predetermined data format;

programmable encoding means, coupled to said receiving means, for encoding the received data packets transmitted in the first predetermined data format into encoded data packets in a second predetermined data format corresponding to the signaling requirements of each geographic delivery area;

satellite transmitting means, coupled to said satellite receiving means, for transmitting the encoded data packets in the second predetermined data format; and

a portable communication receiver, operable in the second predetermined data format in the geographic delivery area, for receiving the encoded data packets transmitted in the second predetermined data format, whereby data packets transmitted to said satellite in the first predetermined data format are converted within said satellite to the second predetermined data format conforming to the signaling requirements for transmission to said portable communication receiver in the geographic delivery area.

39. The global satellite paging system according to claim 38, further comprising:

satellite timing means, for generating timing information signals;

memory means, for storing a table correlating the timing information signals to the plurality of geographic delivery areas, said memory means further for storing a table correlating the required second predetermined data format to each geographical delivery area; and

controller means, coupled to said programmable encoding means and to said memory means, and responsive to the timing information signals, for determining the current geographical delivery area, said controller means further for controlling the encoding of the data packets received in the first predetermined data format into data packets encoded in the second predetermined signaling format based on the current geographical delivery area.

40. The global satellite paging system according to claim 39, wherein said satellite transmitter means is capable of transmitting on a plurality of frequencies, and said memory means further stores a table correlating transmitter frequency to the geographic location information, and wherein said controller means is further responsive to the geographic location information to transmit the data packets on one or more of the plurality of frequencies for each of the plurality of geographic delivery areas.

41. The global satellite paging system according to claim 38 wherein the data transmitted in the first predetermined data format is ASCII encoded data.

42. The global satellite paging system according to claim 38 wherein the data transmitted in the second predetermined data format is encoded in the POCSAG signaling format.

43. The global satellite paging system according to claim 38 wherein the data transmitted in the second predetermined data format is encoded in the Golay Sequential Code signaling format.

44. The global satellite paging system according to claim 38, wherein said plurality of satellite orbit in non-synchronous orbits.

45. The global satellite paging system according to claim 44, wherein each of said satellites further comprising inter-satellite communication means for forwarding the data packet received in the first predetermined data format to an adjacent satellite.

46. The global satellite paging system according to claim 38, wherein each of said plurality of satellites orbits in non-synchronous orbits.

47. A method for providing geographic protocol conversion for data packet delivery to ground based communication receivers located in a plurality of geographic areas from a satellite paging system, said method comprising the steps of:

receiving the data for data packet delivery in a non-encoded format;

transmitting the non-encoded data from a ground based station to one or more satellites;

encoding the data within the satellite into the signaling protocol based on the geographic delivery area; and

transmitting the encoded data packet to the ground based communication receivers in the geographic delivery area.

48. The method according to claim 47 further comprising the step of setting the transmitter operating frequency corresponding the the geographic delivery area.