Dynamic selection of CWmin in cognitive radio networks for protecting IEEE 802.11 primary users
Kenta Umebayashi, Lehtomäki Janne, Yasuo Suzuki · 2011
Time domain spectrum sharing between primary user (PU) and cognitive radio (CR) networks is considered. The Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) protocol is suitable for this type of spectrum sharing with unslotted access in which PUs and secondary users (SUs) are asynch