Source: http://www.google.com/patents/US7890098?dq=6,128,731
Timestamp: 2018-01-22 15:19:24
Document Index: 14554549

Matched Legal Cases: ['Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 200480022009']

Patent US7890098 - Staggered sectorization for terrestrial reuse of satellite frequencies - Google Patents
A satellite radiotelephone system can include a space-based component and a plurality of ancillary terrestrial components. The space-based component is configured to provide wireless radiotelephone communications over a satellite radiotelephone frequency band. The plurality of ancillary terrestrial components...http://www.google.com/patents/US7890098?utm_source=gb-gplus-sharePatent US7890098 - Staggered sectorization for terrestrial reuse of satellite frequencies
Publication number US7890098 B2
Application number US 11/413,284
Also published as US20060252368
Publication number 11413284, 413284, US 7890098 B2, US 7890098B2, US-B2-7890098, US7890098 B2, US7890098B2
Patent Citations (160), Non-Patent Citations (7), Referenced by (2), Classifications (13), Legal Events (8)
US 7890098 B2
a plurality of ancillary terrestrial components configured to provide communications over a service region using at least one first frequency of the satellite frequency band in a sectorization pattern that is spatially staggered between ancillary terrestrial components, wherein the space-based component excludes communications using the at least one first frequency over the service region and an aggregate power radiated by the plurality of ancillary terrestrial components at the at least one first frequency in any direction is less than a total power radiated by the plurality of ancillary terrestrial components at the at least one first frequency;
wherein the sectorization pattern is spatially staggered so that each one of the plurality of ancillary terrestrial components transmits the at least one first frequency in a respective different direction.
6. A satellite radiotelephone system according to claim 5 wherein the at least one first frequency is further used by radiotelephones to provide up-link communications.
7. A satellite radiotelephone system according to claim 1 wherein each of at least some of the plurality of ancillary terrestrial components comprises n directional sectors and the at least one first frequency is used by the plurality of ancillary terrestrial components so that an aggregate power radiated by the plurality of ancillary terrestrial components at the at least one first frequency in a direction is limited to approximately 1/n of a total radiated power transmitted by the plurality of ancillary terrestrial components at the at least one first frequency.
8. A satellite radiotelephone system according to claim 7 wherein n=3.
10. A satellite radiotelephone system according to claim 1 wherein the plurality of ancillary terrestrial components comprise at least three ancillary terrestrial components, each of which transmits the at least one first frequency in a respective different direction.
11. A satellite radiotelephone system comprising:
a plurality of ancillary terrestrial components comprising a plurality of frequency reuse clusters, wherein a first frequency reuse cluster transmits at least one first frequency of the satellite frequency band in a first direction and a second frequency reuse cluster transmits the at least one first frequency of the satellite frequency band in a second direction that is different than the first direction, wherein the space-based component excludes communications using the at least one first frequency over a service region that includes the plurality of ancillary terrestrial components and an aggregate power radiated by the plurality of ancillary terrestrial components at the at least one first frequency in any direction is less than a total power radiated by the plurality of ancillary terrestrial components at the at least one first frequency.
12. A satellite radiotelephone system according to claim 11 wherein the space-based component is configured to provide communications over a service region including the plurality of ancillary terrestrial components using at least one second frequency of the satellite frequency band, wherein the at least one second frequency is different than the at least one first frequency.
13. A satellite radiotelephone system according to claim 12 wherein the space-based component is configured to provide down-link communications over the service region including the plurality of ancillary terrestrial components using the at least one second frequency.
14. A satellite radiotelephone system according to claim 12 wherein the space-based component is configured to provide communications over a second service region not including the plurality of ancillary terrestrial components, wherein the space-based component provides communications over the second service region using the at least one first frequency.
15. A satellite radiotelephone system according to claim 11 wherein the at least one first frequency is used by ancillary terrestrial components to provide down-link communications.
16. A satellite radiotelephone system according to claim 11 wherein each of at least some of the plurality of ancillary terrestrial components comprises n directional sectors and an aggregate power radiated by the at least some of the plurality of ancillary terrestrial components at the at least one first frequency in a direction is no greater than approximately 1/n of a total power radiated by the at least some of the ancillary terrestrial components at the at least one first frequency.
17. A satellite radiotelephone system according to claim 16 wherein n=3.
18. A satellite radiotelephone system according to claim 16 wherein each frequency reuse cluster uses the at least one first frequency no more than once.
19. A method of operating a satellite radiotelephone system, the method comprising:
providing communications from a plurality of ancillary terrestrial components over a service region using at least one first frequency of the satellite frequency band in a sectorization pattern that is spatially staggered between ancillary terrestrial components, wherein the space-based component excludes communications using the at least one first frequency over the service region and an aggregate power radiated by the plurality of ancillary terrestrial components at the at least one first frequency in any direction is less than a total power radiated by the plurality of ancillary terrestrial components at the at least one first frequency;
20. A method according to claim 19 wherein providing communications from a space-based component using frequencies of a satellite frequency band further comprises providing communications over a service region including the plurality of ancillary terrestrial components using at least one second frequency of the satellite frequency band, wherein the at least one second frequency is different than the at least one first frequency.
21. A method according to claim 20 wherein providing communications from a space-based component using frequencies of a satellite frequency band further comprises providing down-link communications over the service region including the plurality of ancillary terrestrial components using the at least one second frequency.
22. A method according to claim 20 wherein providing communications from a space-based component using frequencies of a satellite frequency band further comprises providing communications over a second service region not including the plurality of ancillary terrestrial components using the at least one first frequency.
23. A method according to claim 19 wherein the at least one first frequency is used by ancillary terrestrial components to provide down-link communications.
24. A method according to claim 23 wherein the at least one first frequency is further used by radiotelephones to provide up-link communications.
25. A method according to claim 19 wherein each of at least some of the plurality of ancillary terrestrial components comprises n directional sectors and the at least one first frequency is transmitted by the plurality of ancillary terrestrial components so that an aggregate power radiated by the plurality of ancillary terrestrial components at the at least one first frequency in a direction is no greater than approximately 1/n of a total power radiated by the plurality of ancillary terrestrial components at the at least one first frequency.
26. A method according to claim 25 wherein n=3.
27. A method according to claim 25 wherein the plurality of ancillary terrestrial components comprise a plurality of frequency reuse clusters wherein each frequency reuse cluster uses the at least one first frequency no more than once.
28. A method according to claim 19 wherein the plurality of ancillary terrestrial components comprise at least three ancillary terrestrial components, each of which transmits the at least one first frequency in a respective different direction.
29. A method of operating a satellite radiotelephone system, the method comprising:
providing communications from a plurality of ancillary terrestrial components comprising a plurality of frequency reuse clusters, wherein a first frequency reuse cluster transmits at least one first frequency of the satellite frequency band in a first direction and a second frequency reuse cluster transmits the at least one first frequency of the satellite frequency band in a second direction that is different than the first direction, wherein the space-based component excludes communications using the at least one first frequency over a service region that includes the plurality of ancillary terrestrial components and an aggregate power radiated by the plurality of ancillary terrestrial components at the at least one first frequency in any direction is less than a total power radiated by the plurality of ancillary terrestrial components at the at least one first frequency.
30. A method according to claim 29 wherein providing communications from a space-based component using frequencies of a satellite frequency band further comprises providing communications over a service region including the plurality of ancillary terrestrial components using at least one second frequency of the satellite frequency band, wherein the at least one second frequency is different than the at least one first frequency.
31. A method according to claim 30 wherein providing communications from a space-based component using frequencies of a satellite frequency band further comprises providing down-link communications over the service region using the at least one second frequency.
32. A method according to claim 30 wherein providing communications from a space-based component using frequencies of a satellite frequency band further comprises providing communications over a second service region not including the plurality of ancillary terrestrial components using the at least one first frequency.
33. A method according to claim 29 wherein the at least one first frequency is used by ancillary terrestrial components to provide down-link communications.
34. A method according to claim 29 wherein each of at least some of the plurality of ancillary terrestrial components comprises n directional sectors and the at least one first frequency is used by the plurality of frequency reuse clusters so that an aggregate power radiated by the plurality of frequency reuse clusters at the at least one first frequency in a direction is no greater than approximately 1/n of a total power radiated by the plurality of frequency reuse clusters at the at least one first frequency.
35. A method according to claim 34 wherein n=3.
36. A method according to claim 34 wherein each frequency reuse cluster uses the at least one first frequency no more than once.
37. A radiotelephone system comprising:
a plurality of terrestrial components comprising a plurality of frequency reuse clusters, at least one terrestrial component of each frequency reuse cluster comprising a plurality of directional sectors, wherein at least a first and second frequency reuse clusters provide communications by transmitting at least one first frequency of a satellite frequency band in respective first and second different directions, a space-based component provides communications using frequencies of the satellite frequency band and excludes communications using the at least one first frequency over a service region that includes the plurality of terrestrial components and wherein an aggregate power radiated by the plurality of terrestrial components at the at least one first frequency in any direction is less than a total power radiated by the plurality of terrestrial components at the at least one first frequency.
38. A radiotelephone system according to claim 37 wherein the at least one first frequency of the satellite frequency band is used by terrestrial components to provide down-link communications.
39. A radiotelephone system according to claim 38 wherein the at least one first frequency of the satellite frequency band is further used by radiotelephones to provide up-link communications.
40. A radiotelephone system according to claim 37 wherein each of at least some of the plurality of terrestrial components comprises n directional sectors and the at least one first frequency of the satellite frequency band is used so that an aggregate power radiated by the at least some of the plurality of terrestrial components at the at least one first frequency in a direction is no greater than approximately 1/n of a total power radiated by the at least some of the plurality of terrestrial components at the at least one first frequency.
41. A radiotelephone system according to claim 40 wherein n=3.
42. A radiotelephone system according to claim 40 wherein each frequency reuse cluster uses the at least one first frequency of the satellite frequency band no more than once.
43. A method of operating a radiotelephone system, the method comprising:
using a radiotelephone frequency by a plurality of terrestrial components to provide radiotelephone communications wherein the plurality of terrestrial components comprises a plurality of frequency reuse clusters with at least one terrestrial component of each frequency reuse cluster transmitting from a plurality of directional sectors and wherein a first frequency reuse cluster transmits the radiotelephone frequency in a first direction and a second frequency reuse cluster transmits the radiotelephone frequency in a second direction that is randomly oriented relative to the first direction, wherein the radiotelephone frequency used by the plurality of frequency reuse clusters is within a band of satellite frequencies transmitted by a space-based component and wherein the first and second directions are different.
44. A method of providing communications comprising:
randomizing use of the radiotelephone frequency by the plurality of terrestrial components, wherein the radiotelephone frequency used among the plurality of terrestrial components is within a band of satellite frequencies associated with a space-based component wherein randomizing use of the radiotelephone frequency comprises randomizing a direction of use of the radiotelephone frequency so that each of the plurality of ancillary terrestrial components transmits the radiotelephone frequency in a respective different direction.
means for randomizing use of the radiotelephone frequency among the plurality of terrestrial components, wherein the radiotelephone frequency is used by terrestrial components to provide down-link communications, and wherein the radiotelephone frequency used among the plurality of terrestrial components is within a band of satellite frequencies associated with a space-based component wherein the means for randomizing use of the radiotelephone frequency comprises means for randomizing a direction of use of the radiotelephone frequency so that each of the plurality of ancillary terrestrial components transmits the radiotelephone frequency in a respective different direction.
46. A communications system according to claim 45 wherein the radiotelephone frequency is further used by radiotelephones to provide up-link communications.
This application claims the benefit of priority as a continuation-in-part application from U.S. application Ser. No. 10/353,308 filed Jan. 29, 2003, now U.S. Pat. No. 7,218,931 which claims the benefit of priority from provisional Application No. 60/393,287, filed Jul. 2, 2002, entitled Staggered Sectorization For Terrestrial Reuse Of Satellite Frequencies. U.S. application Ser. No. 10/353,308 also claims the benefit of priority as a continuation-in-part application from application Ser. No. 10/074,097, filed Feb. 12, 2002, now U.S. Pat. No. 6,684,057 entitled Systems and Methods for Terrestrial Reuse of Cellular Satellite Frequency Spectrum which claims the benefit of priority from provisional Application No. 60/322,240, filed Sep. 14, 2001, entitled Systems and Methods For Terrestrial Re-Use of Mobile Satellite Spectrum. U.S. patent application Ser. No. 10/353,308 also claims the benefit of priority as a continuation-in-part application from application Ser. No. 10/180,281, filed Jun. 26, 2002, now U.S. Pat. No. 6,999,720 entitled Spatial Guardbands for Terrestrial Reuse of Satellite Frequencies, which claims priority from Provisional Application No. 60/347,173, filed Jan. 9, 2002, entitled Spatial Guardbands for Terrestrial Reuse of Satellite Frequencies. The present application thus claims the benefit of priority from U.S. application Ser. No. 10/353,308 filed Jan. 29, 2003, from U.S. Application No. 60/393,287 filed Jul. 2, 2002, from U.S. application Ser. No. 10/074,097 filed Feb. 12, 2002, from U.S. Application No. 60/322,240 filed Sep. 14, 2001, from application Ser. No. 10/180,281 filed Jun. 26, 2002, and from Provisional Application No. 60/347,173 filed Jan. 9, 2002. All of these applications are assigned to the assignee of the present application, the disclosures of all of which are hereby incorporated herein by reference in their entirety as if set forth fully herein.
The radiotelephone frequency may be used by terrestrial components to provide down-link communications. Each of at least some terrestrial components transmitting from a plurality of directional sectors may include n directional sectors, and the radiotelephone frequency may be used by the plurality of frequency reuse clusters so that an aggregate radiated power transmitted by the plurality of frequency reuse clusters at the radiotelephone frequency in a direction may be no greater than approximately 1/n of a total radiated power transmitted by the plurality of frequency reuse clusters at the radiotelephone frequency. In addition, n may be equal to 3. Each frequency reuse cluster may use the radiotelephone frequency no more than once, and/or the radiotelephone frequency used by the plurality of frequency reuse clusters may be within a band of satellite frequencies transmitted by a space-based component.
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U.S. Classification 455/429, 455/12.1, 455/427, 455/13.3
International Classification H04W40/00, H04B7/185, H04W4/00
Cooperative Classification H04B1/126, H04W52/346, H04B7/18513
European Classification H04B1/12A2, H04W52/34N, H04B7/185D2