Terrestrial communications network suitable for providing air-to-ground connectivity

• US 8,831,601 B2
• Filed: 07/02/2012
• Issued: 09/09/2014
• Est. Priority Date: 07/02/2012
• Status: Active Grant

• Current Assignee: Rockwell Collins, Inc. (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Rockwell Collins, Inc. (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Mitchell, James P.
• Primary Examiner(s): Magloire, Vladimir
• Application Number:
  US13/539,638
• Publication Number:
  US 20140004853A1
• Time in Patent Office: 799 Days
• Field of Search: 455/431, 455/422, 455/429, 455/447
• US Class Current: 455/431
• CPC Class Codes: H04B 7/18506 Communications with or from aircraft, i.e. aeronautical mobile service

Abstract

The present invention includes a plurality of native cellular nodes configured to provide wireless connectivity to one or more ground-based wireless devices, each native node including a BTS having a transceiver configured to transmit a downlink signal to the ground-based devices at a native downlink frequency and receive an uplink signal from the ground-based devices at a native uplink frequency, a plurality of augmented nodes configured to provide connectivity to one or more airborne devices, each augmented node including an augmented BTS having a transceiver configured to transmit a downlink signal to the one or more airborne communications devices via an upwardly directed antenna at the native downlink frequency and receive an air-to-ground uplink signal from the airborne devices at a selected air-to-ground uplink frequency different from the native uplink signal frequency, wherein the native nodes and the augmented nodes are configured to operate on a common backhaul infrastructure.

Claims

1. A terrestrial communications network suitable for providing air-to-ground connectivity, comprising:

a plurality of native cellular nodes configured to provide wireless communication connectivity to one or more ground-based wireless communication devices, each native cellular node including a base transceiver station (BTS) having one or more transceivers configured to transmit a downlink signal to the one or more ground-based wireless communication devices at a native downlink frequency and receive an uplink signal from the one or more ground-based wireless communications devices at a native uplink frequency; and

a plurality of augmented cellular nodes configured to provide wireless communication connectivity to one or more airborne communications devices, each augmented cellular node including an augmented BTS having one or more transceivers configured to transmit a downlink signal to the one or more airborne communications devices via one or more upwardly directed antennas at the native downlink frequency and receive an air-to-ground uplink signal from the one or more airborne communications devices at a selected air-to-ground uplink frequency, wherein at least one of the augmented cellular nodes includes one or more power amplifiers configured to amplify the downlink signal transmitted by an upwardly directed antenna such that the downlink signal emanating from the at least one augmented cellular node has a power level larger than a downlink signal emanating from at least one of the native cellular nodes, wherein the plurality of native cellular nodes and the plurality of augmented cellular nodes are configured to operate on a common backhaul infrastructure.

2. The communications network of claim 1, wherein the air-to-ground uplink frequency is different from the native uplink frequency.

3. The communications network of claim 1, wherein the air-to-ground uplink frequency is substantially the same as the native uplink frequency.

4. The communications network of claim 1, wherein at least one of the plurality of native network cellular nodes and the plurality of augmented cellular nodes are configured to at least one of transmit and receive via at least one of the Ku-band, the Ka-band, the K-band, the C-band, the L-band, the F-band, the X-band, and the UHF-band.

5. The communications network of claim 1, wherein at least one of the plurality of native network cellular nodes and the plurality of augmented cellular nodes are compatible with at least one of an LTE specification, WiMax specification, 5G specification, 4G specification, 3G specification, and 2G specification.

6. The communications network of claim 1, wherein the one or more airborne communications devices comprise:

one or more aircraft mounted communication devices.

7. The communications network of claim 6, wherein the one or more aircraft mounted communication devices comprise:

one or more aircraft mounted communication devices including one or more transceivers configured to receive a downlink signal at the native downlink frequency and transmit an uplink signal at the selected air-to-ground uplink frequency.

8. The communications network of claim 6, wherein the one or more aircraft mounted communication devices comprise:

one or more aircraft mounted communication devices including switching circuitry configured to switch between a first transceiver configured to transmit an uplink signal at the air-to-ground frequency and a second transceiver configured to transmit an uplink signal at the native uplink frequency of the communication network.

9. The communications network of claim 8, wherein the one or more aircraft mounted communication devices including switching circuitry configured to switch between a first transceiver configured to transmit an uplink signal at the air-to-ground frequency and a second transceiver configured to transmit an uplink signal at the native uplink frequency of the communication network comprise:

one or more aircraft equipped with switching circuitry configured to switch between a first transceiver configured to transmit an uplink signal at the air-to-ground frequency and a second transceiver configured to transmit an uplink signal at the native uplink frequency of the communication network in response to a user input.

10. The communications network of claim 8, wherein the one or more aircraft mounted communication devices including switching circuitry configured to switch between a first transceiver configured to transmit an uplink signal at the air-to-ground frequency and a second transceiver configured to transmit an uplink signal at the native uplink frequency of the communication network comprise:

one or more aircraft equipped with switching circuitry configured to switch between a first transceiver configured to transmit an uplink signal at the air-to-ground frequency and a second transceiver configured to transmit an uplink signal at the native uplink frequency of the communication network in response to an altitude of the aircraft.

11. The communications network of claim 1, wherein the one or more airborne communications devices comprise:

an airborne communications device desensitized to the native downlink frequency of the communications network.

12. The communications network of claim 1, wherein each augmented cellular node comprises:

an augmented cellular node including one or more power amplifiers configured to transmit an augmented downlink signal having a selected power level at least larger than a minimum threshold of a receiver of an airborne communications device.

13. The communications network of claim 1, wherein at least one of the native cellular nodes and at least one of the augmented cellular nodes are disposed in a common tower structure.

14. The communications network of claim 1, wherein some of the plurality of augmented cellular nodes are arranged at a periphery of a geographic region devoid of connectivity via the plurality of native cellular nodes.

15. A wireless network communication node suitable for integration in a wireless communications network, comprising:

an augmented base transceiver station (BTS), the augmented BTS including one or more transceivers;

one or more upwardly oriented antennas communicatively coupled to the one or more transceivers, the one or more transceivers configured to transmit a downlink signal to one or more airborne communication devices via the one or more upwardly oriented antennas at a downlink frequency; and

one or more power amplifiers configured to amplify the downlink signal such that the downlink signal emanating from the one or more upwardly oriented antennas has a power level larger than a native downlink signal emanating from one or more antennas of at least one native cellular node,

the one or more transceivers further configured to receive an uplink signal from the one or more airborne communications devices via the one or more upwardly oriented antenna.

16. The wireless network node of claim 15, wherein the downlink signal has a downlink frequency substantially equal to a native downlink frequency of the wireless communications network.

17. The wireless network node of claim 15, wherein the downlink signal has a downlink frequency different from a native downlink frequency of the wireless communications network.

18. The wireless network node of claim 15, wherein the uplink signal from the one or more airborne communications devices is transmitted at a frequency different from the native uplink frequency.

19. The wireless network node of claim 15, wherein the uplink signal from the one or more airborne communications devices is transmitted at the native uplink frequency.

20. The communications network of claim 15, wherein the augmented BTS is configured to at least one of transmit and receive via at least one of the Ku-band, the Ka-band, the K-band, the C-band, the L-band, the F-band, the X-band, and the UHF-band.

21. The communications network of claim 15, wherein the augmented BTS is compatible with at least one of an LTE specification, WiMax specification, 5G specification, 4G specification, 3G specification, and 2G specification.

22. A method for providing air-to-ground connectivity on a terrestrial wireless communications network, comprising:

transmitting one or more native downlink signals to one or more ground-based wireless communication devices at a native downlink frequency;

receiving one or more uplink signals from the one or more ground-based wireless communications devices at a native uplink frequency;

transmitting one or more air-to-ground downlink signals to one or more airborne communications devices via one or more upwardly directed antennas at the native downlink frequency;

amplifying the one or more air-to-ground downlink signals such that the one or more air-to-ground downlink signals have a power level larger than the one or more native downlink signals transmitted to one or more ground-based wireless communication devices; and

receiving one or more uplink signals from the one or more airborne communications devices at a selected air-to-ground uplink frequency different from the native uplink frequency.