Method and system for estimating an occupancy level of a geographic area

A system for estimating, at a specified time period, an occupancy level of a geographic area served by a mobile communication network, wherein the mobile communication network comprises a base transceiver station providing radio coverage over the geographic area, the system comprising an estimate module configured to, during a reference time period:

• a) cause the base transceiver station to transmit first radio signals over the geographic area, and to receive corresponding second radio signals originated from a plurality of bodies within the geographic area by backscattering of the first radio signals hitting the plurality of bodies, wherein the plurality of bodies comprise first bodies whose presence within the geographic area is permanent and second bodies whose presence within the geographic area is temporary;
• b) according to the first and second radio signals, generate a first map of the first bodies within the geographic area,
• wherein, during the reference time period:
• the estimate module is configured to, after step a), identify, among the second radio signals, the second radio signals originated from the second bodies, and step b) is performed by discarding the second radio signals originated from the second bodies;
• and wherein the estimate module is configured to, at the specified time period, following in time the reference time period:
• c) perform step a);
• d) according to the first and second radio signals, generate a second map of the plurality of bodies within the geographic area, and
• e) according to a comparison between the first and second maps, determine a number of the second bodies within the geographic area during the specified time period, said number of second bodies representing said occupancy level.