Intelligent Blocking System for Mobile Communications Initiated by Unauthorized Users

Abstract

Smartphones are nowadays extremely popular mobile devices and have the potential to make people”s lives easier, but there are times and places where phones should not be used. A possible solution to this problem is a mobile phone jammer system with the purpose to effectively disrupt the mobile service between the user equipment and the base station. The proposed solution consists of a mobile phone emission detector that identifies the increase in power level in one of the monitored Long Term Evolution (LTE) uplink bands which indicates data traffic between the mobile phone and the base station and triggers the entry into operation of the jamming device creating a denial-of-service attack in the LTE downlink band corresponding to the detected uplink emission. In order to ensure minimum power consumption, while maintaining full efficiency of the jamming system, after an adjustable period of time, the emission operation is stopped and the system goes back into detection mode. The system can be build using Software Defined Radio (SDR) technology and GNU Radio software to program and control the SDR devices.