One way is the Sequential Probability Ratio Test (SPRT). SPRT can support a large number of spectrum sensing results and combine them together. In this way, SPRT can have a higher probability to guarantee the spectrum sensing correctness. Another way is to use a reputation-based scheme in the Distributed Spectrum Sensing (DSS) process. This scheme can make a long time record of the sensing results and rate the users according to the correctness of their sensing results. Those who are always right can get a high reputation, and their results would be adopted. However, the malicious nodes would be low rated and would not be believed