An Improved CSMA Access Control Method for Cognitive Environment
Tianming Jiang · Journal of Sichuan Normal University · 2011
Cognitive radio technology is an intelligent wireless radio technology which is able to sense the wireless environment and identify available spectrum resources.It can access intelligently and dynamically thus enhancing the utilization of spectrum resources.In this paper,based on 802.11 CSMA/CA and considering the characteristics of the cognitive radio,we propose an improved CSMA access control method to improve the RTS-CTS frame,the virtual carrier sense,the backoff mechanism,and then we analysis its performance.