| Abstract [eng] |
In this master's thesis blocking feasibility of mobile network is studied. There are two ways to accomplish blocking: jam the mobile signal or use IMSI catcher. This paper analyzes both of them, looks into their operating principles and details all elements involved in the blocking process. It also analyzes scientific work performed in this topic. This paper gives an overview of the most popular outdoor, outdoor to indoor and indoor radio wave propagation models. Moreover, it details key parameters of radio wave transmitting antennas. It also describes the structure of the mobile network and GSM, UMTS, LTE network security procedures that are used in communication between mobile station and the base station. In the last part of this paper major limitations of jammers and IMSI catchers are described. Moreover, solutions that makes blocking of mobile signal more efficient are proposed. In the end GSM, UMTS and LTE technology network of IMSI catchers, which covers territory of open prison colony of Pravieniškės is designed. |
