Cellular mobile telephone system usable on board a passenger transport vehicle
AssigneeAlcatel
InventorsJean-Rene Rousseau, Jean-Francois Criqui
Life of this patent
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Abstract
A cellular mobile telephone system usable on board a passenger transport vehicle includes a first transmitter-receiver station on board the vehicle and connected to an antenna external to the vehicle to establish an external radio link between the vehicle and a terrestrial mobile telephone network via a satellite. A base station system having at least one antenna inside the vehicle is connected to a base station controller. The base station system and the base station controller have functions analogous to those of a base station system in a standard mobile telephone network.
Claims5
A cellular mobile telephone system usable on board a passenger transport vehicle, the system comprising:
- a transmitter-receiver station on board said vehicle and connected to a first antenna external to said vehicle to establish an external radio link between said vehicle and a terrestrial mobile telephone network, and
- means in said vehicle for coupling portable mobile telephone terminals inside said vehicle to said transmitter-receiver station, said means including at least one base station system having at least a second antenna inside said vehicle and a base station controller connected to said base station system and to said transmitter-receiver station, said base station controller and said base station system having functions analogous to those of a base station system in a standard mobile telephone network, wherein said base station system utilizes said second antenna to communicate with said portable telephones via a wireless radio frequency communication link, and said base comprises means enabling the terminal to regulate its transmission power.
Dependencies are inferred from the claim text.