CA2667370A1 - Air-to-ground cellular communication network terrestrial base station having multi-dimensional sectors with alternating radio frequency polarizations - Google Patents

Air-to-ground cellular communication network terrestrial base station having multi-dimensional sectors with alternating radio frequency polarizations Download PDF

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Publication number
CA2667370A1
CA2667370A1 CA002667370A CA2667370A CA2667370A1 CA 2667370 A1 CA2667370 A1 CA 2667370A1 CA 002667370 A CA002667370 A CA 002667370A CA 2667370 A CA2667370 A CA 2667370A CA 2667370 A1 CA2667370 A1 CA 2667370A1
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CA
Canada
Prior art keywords
air
sectors
radio frequency
ground
far field
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002667370A
Other languages
French (fr)
Other versions
CA2667370C (en
Inventor
Anand K. Chari
Harold Grant Saroka
Tim Joyce
Patrick J. Walsh
Yong Liu
Daniel Bernard Mckenna
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Gogo Business Aviation LLC
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Individual
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Publication of CA2667370A1 publication Critical patent/CA2667370A1/en
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Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H01Q1/282—Modifying the aerodynamic properties of the vehicle, e.g. projecting type aerials
    • H01Q1/283—Blade, stub antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
    • H01Q9/0435—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave using two feed points
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/32—Vertical arrangement of element
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/10—Polarisation diversity; Directional diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18502—Airborne stations
    • H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0019—Control or signalling for completing the hand-off for data sessions of end-to-end connection adapted for mobile IP [MIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/12—Reselecting a serving backbone network switching or routing node
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/22—Performing reselection for specific purposes for handling the traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/005—Moving wireless networks

Abstract

The Multi-Link Aircraft Cellular System makes use of multiple physically separated antennas mounted on the aircraft, as well as the use of additional optional signal isolation and optimization techniques to improve the call h andling capacity of the Air-To-Ground cellular communications network These additional techniques can include polarization domain and ground antenna pat tern shaping (in azimuth, in elevation, or in both planes) Further, if code domain separation is added, dramatic increases in capacity are realized Thus , the Air-To-Ground cellular communications network can increase its capacit y on a per aircraft basis by sharing its traffic load among more than one ce ll or sector and by making use of multiple physically separated antennas mou nted on the aircraft, as well as the use of additional optional signal isola tion and optimization techniques

Claims (14)

1. A system for managing radio frequency communications in a non-terrestrial region of space between a plurality of wireless subscriber devices located in an aircraft and an Air-To-Ground cellular communications network, comprising:
a plurality of Air-To-Ground terrestrial base stations of said Air-To-Ground cellular communications network for populating said non-terrestrial region of space with a plurality of multi-dimensional Radio Frequency sectors to exchange call traffic between said plurality of wireless subscriber devices and said Air-To-Ground cellular communications network; and polarization means for polarizing adjacent ones of said plurality of sectors from among at least two substantially orthogonal polarizations.
2. The system for managing radio frequency communications of claim 1 wherein at least one of said Air-To-Ground terrestrial base stations comprises:

azimuthal sectoring means for dividing said Air-To-Ground terrestrial base station antenna's far field pattern into a plurality of sectors in an azimuthal plane, each comprising a portion of said far field pattern.
3. The system for managing radio frequency communications of claim 2 wherein said polarization means comprises:

alternating means for alternating polarization of adjacent ones of each of said plurality of sectors between said at least two substantially orthogonal polarizations.
4. The system for managing radio frequency communications of claim 1 wherein at least one of said Air-To-Ground terrestrial base stations comprises:
elevational sectoring means for dividing said Air-To-Ground terrestrial base station antenna's far field pattern into a plurality of sectors in an elevational plane, each comprising a portion of said far field pattern.
5. The system for managing radio frequency communications of claim 4 wherein said polarization means comprises:
alternating means for alternating polarization of adjacent ones of each of said plurality of sectors between said at least two substantially orthogonal polarizations.
6. The system for managing radio frequency communications of claim 1 further comprising:

wherein at least one of said Air-To-Ground terrestrial base stations comprises:
azimuthal sectoring means for dividing said Air-To-Ground terrestrial base station antenna's far field pattern into a plurality of sectors in an azimuthal plane, each comprising a portion of said far field pattern, elevational sectoring means for dividing said Air-To-Ground terrestrial base station antenna's far field pattern into a plurality of sectors in an elevational plane, each comprising a portion of said far field pattern; and wherein said polarization means alternates polarization of adjacent ones of each of said plurality of sectors between said at least two substantially orthogonal polarizations.
7. The system for managing radio frequency communications of claim 1 further comprising:
link selection means for identifying a plurality of said Radio Frequency sectors, extant on at least one of said plurality of Air-To-Ground terrestrial base stations, to exchange call traffic between a plurality of wireless subscriber devices in an aircraft and said Air-To-Ground cellular communications network.
8. A method for managing radio frequency communications in a non-terrestrial region of space between a plurality of wireless subscriber devices located in an aircraft and an Air-To-Ground cellular communications network, comprising:
populating, using a plurality of Air-To-Ground terrestrial base stations of said Air-To-Ground cellular communications network, said non-terrestrial region of space with a plurality of multi-dimensional Radio Frequency sectors to exchange call traffic between said plurality of wireless subscriber devices and said Air-To-Ground cellular communications network; and polarizing of adjacent ones of said plurality of sectors from among at least two substantially orthogonal polarizations.
9. The method for managing radio frequency communications of claim 8 wherein said step of populating comprises:
dividing said Air-To-Ground terrestrial base station antenna's far field pattern into a plurality of sectors in an azimuthal plane, each comprising a portion of said far field pattern.
10. The method for managing radio frequency communications of claim 9 wherein said step of polarizing comprises:

alternating polarization of adjacent ones of each of said plurality of sectors from said at least two substantially orthogonal polarizations.
11. The method for managing radio frequency communications of claim 8 wherein said step of populating comprises:
dividing said Air-To-Ground terrestrial base station antenna's far field pattern into a plurality of sectors in an elevational plane, each comprising a portion of said far field pattern.
12. The method for managing radio frequency communications of claim 11 wherein said step of polarizing comprises:

alternating polarization of adjacent ones of each of said plurality of sectors from said at least two substantially orthogonal polarizations.
13. The method for managing radio frequency communications of claim 8 further comprising:
wherein said step of populating comprises:
dividing said Air-To-Ground terrestrial base station antenna's far field pattern into a plurality of sectors in an azimuthal plane, each comprising a portion of said far field pattern, dividing said Air-To-Ground terrestrial base station antenna's far field pattern into a plurality of sectors in an elevational plane, each comprising a portion of said far field pattern; and wherein said step of polarizing alternates polarization of adjacent ones of each of said plurality of sectors from said at least two substantially orthogonal polarizations.
14. The method for managing radio frequency communications of claim 8 further comprising:
identifying a plurality of said Radio Frequency sectors, extant on at least one of said plurality of Air-To-Ground terrestrial base stations, to exchange call traffic between a plurality of wireless subscriber devices in an aircraft and said Air-To-Ground cellular communications network.
CA2667370A 2006-10-31 2007-09-17 Air-to-ground cellular communication network terrestrial base station having multi-dimensional sectors with alternating radio frequency polarizations Active CA2667370C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/590,146 US8145208B2 (en) 2006-10-31 2006-10-31 Air-to-ground cellular communication network terrestrial base station having multi-dimensional sectors with alternating radio frequency polarizations
US11/590,146 2006-10-31
PCT/US2007/078650 WO2008054935A1 (en) 2006-10-31 2007-09-17 Air-to-ground cellular communication network terrestrial base station having multi-dimensional sectors with alternating radio frequency polarizations

Publications (2)

Publication Number Publication Date
CA2667370A1 true CA2667370A1 (en) 2008-05-08
CA2667370C CA2667370C (en) 2012-12-04

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Country Status (8)

Country Link
US (1) US8145208B2 (en)
EP (1) EP2078349B1 (en)
JP (1) JP2010508772A (en)
CN (1) CN101536360B (en)
AU (1) AU2007313940B2 (en)
CA (1) CA2667370C (en)
MX (1) MX2009004812A (en)
WO (1) WO2008054935A1 (en)

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US8145208B2 (en) 2012-03-27
WO2008054935A1 (en) 2008-05-08
EP2078349B1 (en) 2014-08-13
US20080102812A1 (en) 2008-05-01
AU2007313940B2 (en) 2011-07-07
CN101536360A (en) 2009-09-16
AU2007313940A1 (en) 2008-05-08
CA2667370C (en) 2012-12-04
EP2078349A1 (en) 2009-07-15
CN101536360B (en) 2013-05-08
JP2010508772A (en) 2010-03-18
MX2009004812A (en) 2009-10-19

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