電子情報通信学会ソサイエティ大会講演要旨
B-17-10
Spectrum Occupancy Models for Real Heavy Traffic Radio Environment
◎Yafei HOU(ATR)・Yusuke TANAKA(Okayama Univ.)・Kazuto YANO(ATR)・Satoshi DENNO(Okayama Univ.)・Yoshinori SUZUKI・Tomoaki KUMAGAI(ATR)
Recently, the cognitive radio (CR) technique using dynamic spectrum access (DSA) is expected to efficiently improve spectrum usage for next generation communication systems. Owing to the opportunistic nature of the DSA principle, the performance and behavior of systems depend on a spectrum occupancy model or pattern. Therefore, an accurate and simple modeling of spectrum occupancy becomes very useful in research of DSA technique. There are some researches related to this topic such as Gaussian mixture model for 802.11 WLAN traffic and the comparison among multiple models for real measurement data in different bands. In this paper, we study spectrum occupancy models obtained from traffic data measured in an airport where a number of users use wireless systems. Several mathematical models are compared both at ~2.4\,GHz and ~5\,GHz bands to find the fine spectrum occupancy models.