Cognitive radio terminal

Cognitive telecommunication terminal designed to coexist with a primary telecommunication system using a set of transmission frequency bands (B) comprising a plurality of spatially distributed transmitters, each transmitter being suitable for transmitting within a coverage area in a plurality of frequency bands in said set allocated to the transmitter, said terminal being characterised in that it comprises:

• positioning means suitable for providing the position of said terminal with a predetermined precision;
• a database in which the position, allocated frequency bands and coverage information defining the coverage area are stored for each transmitter;
• calculation means suitable for determining the maximum power that the terminal can transmit for each frequency band in said set, starting from said terminal position, together with the position, allocated frequency bands and the coverage area for each transmitter, said calculation means also being suitable for sorting frequency bands as a function of the maximum powers thus obtained;
• radio transmission/reception means suitable for detecting the presence of a signal in the frequency bands thus sorted, beginning with the frequency band associated with the highest maximum power.