Method for providing mobile radio connectivity in a confined space by means of an external aerial and associated system

A method of communication between at least one base station of a mobile-radio network, preferably of the LTE or 5G type, and at least one terminal located in a confined space, said method comprising the following steps:

• a) receiving by at least one television aerial external to said confined space, in a UHF frequency band, in particular between 450 MHz and 960 MHz, a plurality of radiofrequency signals comprising, on the one hand, at least one mobile-radio signal emitted by said at least one base station of the mobile-radio network, preferably in accordance with the LTE or 5G standard, said plurality of radiofrequency signals comprising on the other hand at least one television signal;
• b) transmitting said plurality of radiofrequency signals, via a wired communication link, between said at least one external television aerial and a processing module of said radiofrequency signals located within said confined space;
• c) extracting said at least one mobile-radio signal by said processing module;
• d) broadcasting said at least one mobile-radio signal extracted by said processing module within the confined space;
• and
• e) receiving by the terminal said broadcast signal.