Systems and methods for terrestrial reuse of cellular satellite frequency spectrum using different channel separation technologies in forward and reverse links
View Patent ↗A wireless communications system includes a terrestrial network that is configured to receive wireless communications from radiotelephones over satellite band frequencies that are divided into channels that are separated by one of frequency or code (e.g., OFDMA or CDMA). The terrestrial network is also configured to transmit wireless communications to radiotelephones over satellite band frequencies that are divided into channels that are separated by a different one of frequency or code (e.g., CDM or OFDM). Related devices and methods are also disclosed.
1. A wireless communications system comprising:
a space-based component that is configured to receive wireless communications from radiotelephones in a satellite footprint over at least one satellite band frequency and to transmit wireless communications to radiotelephones in the satellite footprint over at least one satellite band frequency; and
an ancillary terrestrial component that is configured to receive wireless communications from radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by one of frequency or code and to transmit wireless communications to radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by a different one of frequency or code.
2. A system according to claim 1 wherein the ancillary terrestrial component is configured to receive wireless communications from radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by code and to transmit wireless communications to radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by frequency.
3. A system according to claim 2 wherein the ancillary terrestrial component is configured to receive wireless communications from radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by code using Code Division Multiple Access (CDMA) and to transmit wireless communications to radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by frequency using Orthogonal Frequency Division Multiplexing (OFDM).
4. A system according to claim 1 wherein the ancillary terminal component is configured to receive wireless communications from radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by frequency and to transmit wireless communications to radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by code.
5. A system according to claim 4 wherein the ancillary terrestrial component is configured to receive wireless communications from radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by frequency using a Global System for Mobile communications (GSM) standard and to transmit wireless communications to radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by code using Code Division Multiplexing (CDM).
6. A system according to claim 1 wherein the ancillary terrestrial component is further configured to receive wireless communications from radiotelephones in the satellite footprint over a plurality of satellite band frequencies and to transmit wireless communications to radiotelephones in the satellite footprint over a plurality of satellite band frequencies using Frequency Division Duplex (FDD) and/or Time Division Duplex (TDD) mode(s).
7. A system according to claim 1 wherein the ancillary terrestrial component is further configured to receive wireless communications from radiotelephones in the satellite footprint over a plurality of satellite band frequencies and to transmit wireless communications to radiotelephones in the satellite footprint over a plurality of satellite band frequencies using a Frequency Division Duplex (FDD) mode and wherein a given satellite band frequency is used by the space-based component to receive wireless communications from radiotelephones in the satellite footprint and by the ancillary terrestrial component to transmit wireless communications to the radiotelephones in the satellite footprint.
8. A system according to claim 1 wherein the ancillary terrestrial component is further configured to receive wireless communications from radiotelephones in the satellite footprint over a plurality of satellite band frequencies and to transmit wireless communications to radiotelephones in the satellite footprint over a plurality of satellite band frequencies using a Frequency Division Duplex (FDD) mode and wherein a given satellite band frequency is used by the space-based component to transmit wireless communications to radiotelephones in the satellite footprint and by the ancillary terrestrial component to receive wireless communications from the radiotelephones in the satellite footprint.
9. A system according to claim 1 wherein the space-based component is also configured to receive wireless communications from radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by one of frequency or code and to transmit wireless communications to radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by a different one of frequency or code.
10. A system according to claim 9 wherein the space-based component is configured to receive wireless communications from radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by code and to transmit wireless communications to radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by frequency.
11. A system according to claim 10 wherein the space-based component is configured to receive wireless communications from radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by code using Code Division Multiple Access (CDMA) and to transmit wireless communications to radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by frequency using Orthogonal Frequency Division Multiplexing (OFDM).
12. A wireless communications system comprising:
a terrestrial network that is configured to receive wireless communications from radiotelephones over a plurality of satellite band frequencies that are divided into channels that are separated by one of frequency or code and to transmit wireless communications to radiotelephones over a plurality of satellite band frequencies that are divided into channels that are separated by a different one of frequency or code.
13. A system according to claim 12 wherein the terrestrial network is configured to receive wireless communications from radiotelephones over a plurality of satellite band frequencies that are divided into channels that are separated by code and to transmit wireless communications to radiotelephones over a plurality of satellite band frequencies that are divided into channels that are separated by frequency.
14. A system according to claim 13 wherein the terrestrial network is configured to receive wireless communications from radiotelephones over a plurality of satellite band frequencies that are divided into channels that are separated by code using Code Division Multiple Access (CDMA) and to transmit wireless communications to radiotelephones over a plurality of satellite band frequencies that are divided into channels that are separated by frequency using Orthogonal Frequency Division Multiplexing (OFDM).
15. A system according to claim 12 wherein the terrestrial network is configured to receive wireless communications from radiotelephones over a plurality of satellite band frequencies that are divided into channels that are separated by frequency and to transmit wireless communications to radiotelephones over a plurality of satellite band frequencies that are divided into channels that are separated by code.
16. A system according to claim 15 wherein the terrestrial network is configured to receive wireless communications from radiotelephones over a plurality of satellite band frequencies that are divided into channels that are separated by frequency using a Global System for Mobile communications (GSM) standard and to transmit wireless communications to radiotelephones over a plurality of satellite band frequencies that are divided into channels that are separated by code using Code Division Multiplexing (CDM).
17. A system according to claim 12 wherein the terrestrial network is further configured to receive wireless communications from radiotelephones over a plurality of satellite band frequencies and to transmit wireless communications to radiotelephones over a plurality of satellite band frequencies using Frequency Division Duplex (FDD) and/or Time Division Duplex (TDD) mode(s).
18. A radiotelephone comprising:
a transceiver system that is configured to transmit wireless communications over a plurality of satellite band frequencies that are divided into channels that are separated by one of frequency or code and to receive wireless communications over a plurality of satellite band frequencies that are divided into channels that are separated by a different one of frequency or code.
19. A radiotelephone according to claim 18 wherein the transceiver system is configured to transmit wireless communications over a plurality of satellite band frequencies that are divided into channels that are separated by code and to receive wireless communications over a plurality of satellite band frequencies that are divided into channels that are separated by frequency.
20. A radiotelephone according to claim 19 wherein the transceiver system is configured to transmit wireless communications over a plurality of satellite band frequencies that are divided into channels that are separated by code using Code Division Multiple Access (CDMA) and to receive wireless communications over a plurality of satellite band frequencies that are divided into channels that are separated by frequency using Orthogonal Frequency Division Multiplexing (OFDM).
21. A radiotelephone according to claim 18 wherein the transceiver system is configured to transmit wireless communications over a plurality of satellite band frequencies that are divided into channels that are separated by frequency and to receive wireless communications over a plurality of satellite band frequencies that are divided into channels that are separated by code.
22. A radiotelephone according to claim 21 wherein the transceiver system is configured to transmit wireless communications over a plurality of satellite band frequencies that are divided into channels that are separated by time using a Global System for Mobile communications (GSM) standard and to receive wireless communications over a plurality of satellite band frequencies that are divided into channels that are separated by code using Code Division Multiplexing (CDM).
23. A radiotelephone according to claim 18 wherein the transceiver system is further configured to receive wireless communications over a plurality of satellite band frequencies and to transmit wireless communications over a plurality of satellite band frequencies using Frequency Division Duplex (FDD) and/or Time Division Duplex (TDD) mode(s).
24. A radiotelephone according to claim 18 wherein the transceiver system is further configured to transmit wireless communications over satellite band frequencies that are divided into channels that are separated by one of frequency or code and to receive wireless communications over satellite band frequencies that are divided into channels that are separated by a same one of frequency or code.
25. A wireless communications method comprising:
receiving wireless communications at a space-based component from radiotelephones in a satellite footprint over at least one satellite band frequency and transmitting wireless communications from the space-based component to radiotelephones in the satellite footprint over at least one satellite band frequency; and
receiving wireless communications from radiotelephones in the satellite footprint at an ancillary terrestrial component over a plurality of satellite band frequencies that are divided into channels that are separated by one of frequency or code and transmitting wireless communications from the ancillary terrestrial component to radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by a different one of frequency or code.
26. A method according to claim 25 wherein the plurality of satellite band frequencies used for receiving are divided into channels that are separated by code using Code Division Multiple Access (CDMA) and wherein the plurality of satellite band frequencies used for transmitting are divided into channels that are separated by frequency using Orthogonal Frequency Division Multiplexing (OFDM).
27. A method according to claim 25 wherein the plurality of satellite band frequencies used for receiving are divided into channels that are separated by frequency using a Global System for Mobile communications (GSM) standard and wherein the plurality of satellite band frequencies used for transmitting are divided into channels that are separated by code using Code Division Multiplexing (CDM).
28. A method according to claim 25 further comprising:
receiving wireless communications from radiotelephones in the satellite footprint at the ancillary terrestrial component over a plurality of satellite band frequencies and transmitting wireless communications from the ancillary terrestrial component to radiotelephones in the satellite footprint over a plurality of satellite band frequencies using Frequency Division Duplex (FDD) and/or Time Division Duplex (TDD) mode(s).
29. A method according to claim 25 further comprising:
receiving wireless communications from radiotelephones in the satellite footprint at the ancillary terrestrial component over a plurality of satellite band frequencies and transmitting wireless communications from the ancillary terrestrial component to radiotelephones in the satellite footprint over a plurality of satellite band frequencies using a Frequency Division Duplex (FDD) mode and wherein a given satellite band frequency is used by the space-based component to receive wireless communications from radiotelephones in the satellite footprint and by the ancillary terrestrial component to transmit wireless communications to the radiotelephones in the satellite footprint.
30. A method according to claim 25 further comprising:
receiving wireless communications from radiotelephones in the satellite footprint at the ancillary terrestrial component over a plurality of satellite band frequencies and transmitting wireless communications from the ancillary terrestrial component to radiotelephones in the satellite footprint over a plurality of satellite band frequencies using a Frequency Division Duplex (FDD) mode and wherein a given satellite band frequency is used by the space-based component to transmit wireless communications to radiotelephones in the satellite footprint and by the ancillary terrestrial component to receive wireless communications from the radiotelephones in the satellite footprint.
31. A method according to claim 25 further comprising:
receiving wireless communications at the space-based component from radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by one of frequency or code and transmitting wireless communications from the space-based component to radiotelephones in the satellite footprint over a plurality of satellite band frequencies that are divided into channels that are separated by a different one of frequency or code.
32. A method according to claim 31 wherein the plurality of satellite band frequencies used for receiving are divided into channels that are separated by code using Code Division Multiple Access (CDMA) and wherein the plurality of satellite band frequencies used for transmitting are divided into channels that are separated by frequency using Orthogonal Frequency Division Multiplexing (OFDM).
33. A wireless communications method comprising:
receiving wireless communications from radiotelephones at a terrestrial network over a plurality of satellite band frequencies that are divided into channels that are separated by one of frequency or code; and
transmitting wireless communications by the terrestrial network to radiotelephones over a plurality of satellite band frequencies that are divided into channels that are separated by a different one of frequency or code.
34. A method according to claim 33 wherein the plurality of satellite band frequencies used for receiving are divided into channels that are separated by code using Code Division Multiple Access (CDMA) and wherein the plurality of satellite band frequencies used for transmitting are divided into channels that are separated by frequency using Orthogonal Frequency Division Multiplexing (OFDM).
35. A method according to claim 33 wherein the a plurality of satellite band frequencies used for receiving are divided into channels that are separated by frequency using a Global System for Mobile communications (GSM) standard and wherein the plurality of satellite band frequencies used for transmitting are divided into channels that are separated by code using Code Division Multiplexing (CDM).
36. A method according to claim 33 further comprising:
receiving wireless communications at the terrestrial network from radiotelephones over a plurality of satellite band frequencies and transmitting wireless communications to radiotelephones from the terrestrial network over a plurality of satellite band frequencies using Frequency Division Duplex (FDD) and/or Time Division Duplex (TDD) mode(s).
37. A radiotelephone operating method comprising:
transmitting wireless communications over a plurality of satellite band frequencies that are divided into channels that are separated by one of frequency or code; and
receiving wireless communications over a plurality of satellite band frequencies that are divided into channels that are separated by a different one of frequency or code.
38. A method according to claim 37 wherein the plurality of satellite band frequencies used for transmitting are divided into channels that are separated by code using Code Division Multiple Access (CDMA) and wherein the plurality of satellite band frequencies used for receiving are divided into channels that are separated by frequency using Orthogonal Frequency Division Multiplexing (OFDM).
39. A method according to claim 37 wherein the plurality of satellite band frequencies used for transmitting are divided into channels that are separated by time using a Global System for Mobile communications (GSM) standard and wherein the plurality of satellite band frequencies used for receiving are divided into channels that are separated by code using Code Division Multiplexing (CDM).
40. A method according to claim 37 further comprising:
receiving wireless communications over a plurality of satellite band frequencies and transmitting wireless communications over a plurality of satellite band frequencies using Frequency Division Duplex (FDD) and/or Time Division Duplex (TDD) mode(s).
41. A method according to claim 37 further comprising:
transmitting wireless communications over satellite band frequencies that are divided into channels that are separated by one of frequency or code; and
receiving wireless communications over satellite band frequencies that are divided into channels that are separated by a same one of frequency or code.
42. A method of providing wireless communications, the method comprising:
transmitting over a plurality of frequencies that are divided into channels that are separated by a first combination of frequency, code, time, phase and/or polarization; and
receiving over a plurality of frequencies that are divided into channels that are separated by a second combination of frequency, code, time, phase and/or polarization;
wherein the first combination and the second combination differ therebetween.
43. A method according to claim 42 wherein the plurality of frequencies comprise at least some satellite band frequencies.
44. A method according to claim 42 wherein the transmitting and receiving is performed by a space-based component, terrestrial network and/or a radiotelephone.
45. A method according to claim 44 wherein the plurality of frequencies used for transmitting are divided into channels that are separated by frequency and wherein the plurality of frequencies used for receiving are divided into channels that are separated by code, time, phase and/or polarization.
46. A method according to claim 44 wherein the plurality of frequencies used for transmitting are divided into channels that are separated by code and wherein the plurality of frequencies used for receiving are divided into channels that are separated by frequency, time, phase and/or polarization.
47. A method according to claim 44 wherein the plurality of frequencies used for transmitting are divided into channels that are separated by time and wherein the plurality of frequencies used for receiving are divided into channels that are separated by frequency, code, phase and/or polarization.
48. A method according to claim 44 wherein the plurality of frequencies used for transmitting are divided into channels that are separated by phase and wherein the plurality of frequencies used for receiving are divided into channels that are separated by frequency, code, time and/or polarization.
49. A method according to claim 44 wherein the plurality of frequencies used for transmitting are divided into channels that are separated by polarization and wherein the plurality of frequencies used for receiving are divided into channels that are separated by frequency, code, time and/or phase.
50. A communications system comprising:
a transmitter that is configured to transmit over a plurality of frequencies that are divided into channels that are separated by a first combination of frequency, code, time, phase and/or polarization; and
a receiver that that is configured to receive over a plurality of frequencies that are divided into channels that are separated by a second combination of frequency, code, time, phase and/or polarization;
wherein the first combination and the second combination differ therebetween.
51. A system according to claim 50 wherein the plurality of frequencies comprise at least some satellite band frequencies.
52. A system according to claim 50 wherein the transmitter and receiver are part of a space-based component, terrestrial network and/or a radiotelephone.
53. A system according to claim 52 wherein the plurality of frequencies used by the transmitter are divided into channels that are separated by frequency and wherein the plurality of frequencies used by the receiver are divided into channels that are separated by code, time, phase and/or polarization.
54. A system according to claim 52 wherein the plurality of frequencies used by the transmitter are divided into channels that are separated by code and wherein the plurality of frequencies used by the receiver are divided into channels that are separated by frequency, time, phase and/or polarization.
55. A system according to claim 52 wherein the plurality of frequencies used by the transmitter are divided into channels that are separated by time and wherein the plurality of frequencies used by the receiver are divided into channels that are separated by frequency, code, phase and/or polarization.
56. A system according to claim 52 wherein the plurality of frequencies used by the transmitter are divided into channels that are separated by phase and wherein the plurality of frequencies used by the receiver are divided into channels that are separated by frequency, code, time and/or polarization.
57. A system according to claim 52 wherein the plurality of frequencies used by the transmitter are divided into channels that are separated by polarization and wherein the plurality of frequencies used by the receiver are divided into channels that are separated by frequency, code, time and/or phase.