Cellular mobile telephone system that can be used on board a vehicle
First Claim
1. A cellular mobile telephone system that can be used on board a vehicle, said system including:
- a first transceiver on board said vehicle and connected to an antenna outside said vehicle to set up an external radio link between said vehicle and a terrestrial mobile telephone network via a satellite; and
means in said vehicle for coupling mobile telephones inside said vehicle to said transceiver, which coupling means include means for setting up a permanent signaling link between said vehicle and said terrestrial mobile telephone network in response to detecting that at least one mobile telephone is switched on.
12 Assignments
0 Petitions
Accused Products
Abstract
A cellular mobile telephone system which can be used on board a vehicle enables conventional mobile telephones to be used on board an aircraft, for example. It includes a first transceiver on board the vehicle and connected to an antenna on the outside of the aircraft to set up an external radio link with a terrestrial mobile telephone network via a satellite. It further includes a second transceiver having an antenna inside the aircraft and connected to a base station controller. The second station and the base station controller have functions similar to those of a base station system in a conventional mobile telephone network, for example a GSM network. The base station controller is connected to the first transceiver. To prevent long signaling link set-up times, the base station controller includes software for setting up a signaling link between the aircraft and the terrestrial mobile telephone network in advance, as soon as at least one mobile telephone is switched on.
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Citations
2 Claims
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1. A cellular mobile telephone system that can be used on board a vehicle, said system including:
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a first transceiver on board said vehicle and connected to an antenna outside said vehicle to set up an external radio link between said vehicle and a terrestrial mobile telephone network via a satellite; and
means in said vehicle for coupling mobile telephones inside said vehicle to said transceiver, which coupling means include means for setting up a permanent signaling link between said vehicle and said terrestrial mobile telephone network in response to detecting that at least one mobile telephone is switched on. - View Dependent Claims (2)
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Specification