Improvement of Radio Environment Map under Data Falsification Attack

Radio Environment Map (REM) is used to enhance the communication efficiency in spatial spectrum sharing. Using the information from terminals' reports is one of the method to generate the REM. The open environment always lead the security problems. High accuracy of terminals' reports is an essential problem in REM construction. In this paper, we consider when malicious terminals are existed and doing data falsification attack, in which they usually rewrite the received signal power and report the malicious datasets to database and try to lead a wrong REM. We propose a double layer monitor method to deal with this kind of attack and the simulation results show our proposed method can remove the influence of the reported data from malicious terminals.