Sensor, the mobile user terminal and process a sensor which detects a mobile user terminal

摘要

A method of a sensor (32, 34, 36) which detects a mobile user terminal for telecommunications cellular radio, being the user terminal associated with any one of a plurality of networks, the method comprising: emitting a signal (1) common in each of the multiple frequency bands carrier; the user terminal receives the signal in the frequency band associated carrier network; checking information of the user terminal in the received signal, and after determining that the information is acceptable to allow connection to the sensor, the user terminal acknowledges the sensor reception signal, wherein each network in the plurality of networks has a different frequency band carrier for radio signals, and the common signal is a common baseband.