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Recently, security issues in dynamic spectrum access (DSA) received more and more attention. One type of threat, which we call the greedy resource occupancy, has long been ignored so far. Specifically, a secondary user (SU) may greedily occupy spectrum for a long time, which makes other SUs suffer additional waiting time to access the spectrum and leads to congestion or breakdown. In this paper, we...
Recently, security of cognitive radio (CR) is becoming a severe issue. There is one kind of threat, which we call greedy spectrum occupancy threat (GSOT) in this paper, has long been ignored in previous work. In GSOT, a secondary user may selfishly occupy the spectrum for a long time, which makes other users suffer additional waiting time in queue to access the spectrum and leads to congestion or...
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