Mobile telecommunications for aircraft and land based vehicles
First Claim
1. A structural cellular telephone system using a designated plurality of radio channels, some of the channels being control channels and some of the channels being voice channels, said system havinga) a plurality of cells, each cell having a base station including a tower located proximate a center thereof,b) each base station equipped to simultaneously transmit and receive on the plurality of voice channels, and at least one control channel,c) a plurality of mobile stations operating within the cells,d) each mobile station being equipped to transmit and receive on some of the channels, ande) at least one mobile switching center connected to each of said base stations,f) said mobile switching centers including means for switching any of the mobile stations from one cell to another,g) each of the mobile stations being equipped to receive instructions from the base stations to determine selections of said channels,wherein the improvement comprises:
- h) some of the mobile stations being on aircraft and some of the mobile stations being on land vehicles,i) some of said base stations having an air capability to transmit and receive signals on the channels in an aircraft horizontal polarized radiation,j) all said base stations having capability to transmit and receive signals on the channels in a land vertical polarized radiation,l) the voice channels to be used for aircraft horizontal polarized radiation selected from all of the voice channels, and the voice channels to be used for land vertical polarized radiation selected from all of the voice channels,m) each of the cells having a land effective transmission range from the base station,n) all cells having a base station having said air capability having an air effective transmission range which is greater than the land effective transmission range of all cells.
12 Assignments
0 Petitions
Accused Products
Abstract
Aircraft communications are established on a cellular system by having the transmission to aircraft directed above ground level so as not to interfere with ground cellular systems and having the transmissions from the aircraft at extreme low power levels so as not to interfere with transmissions from ground vehicles. The location of mobile stations either aircraft or ground vehicles for one embodiment is determined by Loran reception or other radio navigation system in the mobile station and transmitted to a mobile switching center to be used in transferring control from cell to cell by use of the determined location of the mobile station. For another embodiment the antennae for aircraft (both base station and mobile) are horizontally oriented while ground vehicle antennae (both base station and mobile) are vertical as in present commercial practice.
185 Citations
5 Claims
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1. A structural cellular telephone system using a designated plurality of radio channels, some of the channels being control channels and some of the channels being voice channels, said system having
a) a plurality of cells, each cell having a base station including a tower located proximate a center thereof, b) each base station equipped to simultaneously transmit and receive on the plurality of voice channels, and at least one control channel, c) a plurality of mobile stations operating within the cells, d) each mobile station being equipped to transmit and receive on some of the channels, and e) at least one mobile switching center connected to each of said base stations, f) said mobile switching centers including means for switching any of the mobile stations from one cell to another, g) each of the mobile stations being equipped to receive instructions from the base stations to determine selections of said channels, wherein the improvement comprises: -
h) some of the mobile stations being on aircraft and some of the mobile stations being on land vehicles, i) some of said base stations having an air capability to transmit and receive signals on the channels in an aircraft horizontal polarized radiation, j) all said base stations having capability to transmit and receive signals on the channels in a land vertical polarized radiation, l) the voice channels to be used for aircraft horizontal polarized radiation selected from all of the voice channels, and the voice channels to be used for land vertical polarized radiation selected from all of the voice channels, m) each of the cells having a land effective transmission range from the base station, n) all cells having a base station having said air capability having an air effective transmission range which is greater than the land effective transmission range of all cells.
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2. In a method of operating a cellular telephone system of the type having a designated plurality of radio channels, some of the channels being control channels and some of the channels being voice channels for mobile stations,
a) a plurality of cells, each cell having a base station including a tower located proximate a center thereof, b) each base station equipped to simultaneously transmit and receive on a plurality of voice channels, and at least one control channel, c) a plurality of mobile stations operating within the cells, d) each mobile station capable of transmitting and receiving upon some of the channels, and e) at least one mobile switching center connected to each of said base stations, f) said mobile switching centers including means for switching any of the mobile stations from one cell to another, g) each of the mobile stations being capable of receiving instructions from the base stations to determine the selection of channels, wherein the improved method comprises: -
h) transmitting and receiving land signals in a land radiation pattern at a land elevation having a land effective transmission range upon a set of voice channels selected from all said voice channels to land mobile stations from the base stations, j) transmitting land signals from the land mobile stations on land vehicles to the base stations at a land power output, k) transmitting and receiving air signals in an aircraft radiation pattern at an air elevation having an aircraft effective transmission range upon a set of voice channels selected from all said voice channels to air mobile stations from at least one of the base stations, l) transmitting air signals from air mobile stations on aircraft to the base station at an air power output which is substantially lower than any said land power output, m) said aircraft radiation pattern elevation being higher than the elevation of said land radiation pattern, and n) said aircraft effective transmission range being greater than the land effective transmission range. - View Dependent Claims (3)
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4. A structural cellular telephone system using a designated plurality of radio channels, some of the channels being control channels and some of the channels being voice channels, said system having
a) a plurality of cells, each cell having a base station including a tower located proximate a center thereof, b) each base station equipped to simultaneously transmit and receive a plurality of voice channels, and at least one control channel, c) a plurality of mobile stations operating within the cells, d) each mobile station being equipped to transmit and receive on some of the channels, and e) at least one mobile switching center connected to each of said base stations, f) said mobile switching centers including means for switching any of the mobile stations from one cell to another, g) each of the mobile stations being equipped to receive instructions from the base stations to determine selections of said channels, wherein the improvement comprises: -
h) some of the mobile stations being on aircraft and some of the mobile stations being on land vehicles, i) all said base stations having a land capability to transmit and receive signals on the channels in a land radiation pattern, j) some of said base stations having an air capability to transmit and receive signals on the channels in an aircraft radiation pattern, k) said aircraft radiation pattern being at a higher elevation than the elevation of said land radiation pattern, l) the voice channels to be used for the aircraft radiation pattern selected from all of the voice channels, and the voice channels to be used for the land radiation pattern selected from all of the voice channels, m) all cells having land effective transmission range from the base station, n) all cells having a base station having said air capability having an air effective transmission range which is greater than the land effective transmission range of all cells, o) said base stations having said air capability also having the capability of transmitting an aircraft horizontally polarized radiation and all said base stations having the capability of a land vertical polarized radiation. - View Dependent Claims (5)
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Specification