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US 9,882,630 B2Granted
Overlaying an air to ground communication system on spectrum assigned to satellite systems
AssigneeQUALCOMM Incorporated
InventorsAhmad Jalali, Leonard N. Schiff, William G. Ames
Life of this patent
Estimating the term…
Abstract
An air to ground communication system provides internet access to aircraft from ground based stations. The air to ground system shares spectrum with uplink portions of a satellite communication spectrum. Interference mitigation techniques are employed to avoid interference between the ground based communications and satellite communications. Fade mitigation techniques are employed to provide communication to aircraft at low angles of elevation in the presence of rain.
Claims42
A system for wireless communication comprising:
- a ground base station configured to transmit and receive signals on a satellite uplink band with an aircraft transceiver, the ground base station further configured:
- to handoff the aircraft transceiver to another ground base station for reducing interference to satellite communications on the satellite uplink band, when the ground base station and the aircraft transceiver are aligned with a non-geostationary satellite and when the other ground base station is available for handoff;
- and
- to temporarily reduce a data rate or discontinue transmission to the aircraft transceiver until the ground base station and the aircraft transceiver are no longer aligned with the non-geostationary satellite when the other ground base station is not available.
1 more element
A system for wireless communication comprising:
- an aircraft transceiver in communication with a ground base station, configured to transmit and receive signals on a satellite uplink band, the aircraft transceiver further configured:
- to handoff to another ground base station for reducing interference to satellite communications on the satellite uplink band, when the ground base station and the aircraft transceiver are aligned with a non-geostationary satellite and when the other ground base station is available for handoff;
- and
- to temporarily reduce a data rate or discontinue transmission until the ground base station and the aircraft transceiver are no longer aligned with the non-geostationary satellite when the other ground base station is not available.
1 more element
A method for wireless communication comprising:
- transmitting and receiving signals by a ground base station on a satellite uplink band with an aircraft transceiver;
- handing off the aircraft transceiver to another ground base station for reducing interference to satellite communications on the satellite uplink band, when the ground base station and the aircraft transceiver are aligned with a non-geostationary satellite and when the other ground base station is available for handoff;
- and
- temporarily reducing a data rate or discontinuing transmission to the aircraft transceiver until the ground base station and the aircraft transceiver are no longer aligned with the non-geostationary satellite when the other ground base station is not available.
1 more element
An apparatus for wireless communication comprising:
- means for transmitting and receiving signals by a ground base station on a satellite uplink band with an aircraft transceiver;
- means for handing off the aircraft transceiver to another ground base station for reducing interference to satellite communications on the satellite uplink band, when the ground base station and the aircraft transceiver are aligned with a non-geostationary satellite and when the other ground base station is available for handoff;
- and
- means for temporarily reducing a data rate or discontinuing transmission to the aircraft transceiver until the ground base station and the aircraft transceiver are no longer aligned with the non-geostationary satellite when the other ground base station is not available.
1 more element
An apparatus for wireless communication comprising:
- at least one processor;
- and
- a memory coupled to the at least one processor, the at least one processor being configured:
- to transmit and receive signals on a satellite uplink band with an aircraft transceiver;
- to hand off the aircraft transceiver to another ground base station for reducing interference to satellite communications on the satellite uplink band, when a ground base station and the aircraft transceiver are aligned with a non-geostationary satellite;
- and when the other ground base station is available for handoff;
- and
- to temporarily reduce a data rate or discontinue transmission to the aircraft transceiver until the ground base station and the aircraft transceiver are no longer aligned with the non-geostationary satellite when the other ground base station is not available.
5 more elements
A computer program product for wireless communications in a wireless network, comprising:
- a non-transitory computer-readable medium having program code recorded thereon, the program code comprising:
- program code to transmit and receive signals by a ground base station on a satellite uplink band with an aircraft transceiver;
- program code to hand off the aircraft transceiver to another ground base station for reducing interference to satellite communications on the satellite uplink band, when the ground base station and the aircraft transceiver are aligned with a non-geostationary satellite and when the other ground base station is available for handoff;
- and
- program code to temporarily reduce a data rate or discontinue transmission to the aircraft transceiver until the ground base station and the aircraft transceiver are no longer aligned with the non-geostationary satellite when the other ground base station is not available.
2 more elements
A first ground base station, comprising:
- a transceiver configured to transmit and receive signals on a satellite uplink band;
- and
- a controller configured:
- to handoff an aircraft transceiver to a second ground base station for reducing interference to satellite communications on the satellite uplink band, when the first ground base station and the aircraft transceiver are aligned with a non-geostationary satellite and when the second ground base station is available for handoff;
- and
- to temporarily reduce a data rate or discontinue transmission to the aircraft transceiver until the ground base station and the aircraft transceiver are no longer aligned with the non-geostationary satellite when the other ground base station is not available.
3 more elements
Dependencies are inferred from the claim text.