METHOD FOR COOPERATIVE SPECTRUM SENSING IN COGNITIVE RADIO

摘要

PURPOSE: A cooperative sensing method in a recognition radio environment is provided to efficiently reduce delay time and bandwidth for spectrum sensing data report of a recognition radio user. CONSTITUTION: A center node transmits a query for a spectrum sensing data transmission request to a recognition station. An assigned available notification message is transmitted to the center node through a sub carrier by using OFDMA(Orthogonal Frequency Division Multiple Access) scheme. The center node obtains joined report data.