Sensors, the mobile user terminal, and how the sensor senses the mobile user terminal

摘要

Associated with one of the plurality of networks , the mobile user terminal for cellular radio telecommunications , sensors are provided a method of sensing , each network , a separate carrier frequency bands for radio signals have . The method includes the steps of broadcasting a common signal in each of a plurality of carrier frequency bands , user terminal , receiving a signal at the carrier frequency bands associated with the network , the user terminal , information in the received signal including a step to check , when the information is determined to be acceptable to allow a connection to the sensor , the user terminal , and the step of acknowledging the receipt of the signal to the sensor .