Title :
Cognitive radio CSMA/CA protocol for femto-WLANs
Author :
Zhao, Liqiang ; Zhang, Wan ; Song, Wenjie ; Zhang, Hailin
Author_Institution :
State Key Lab. of Integrated Services Networks, Xidian Univ., Xi´´an, China
Abstract :
To expand private femto-WLANs into public femto-WLANs, we present an integrated system of cognitive radio and femto-WLANs, cognitive femto-WLANs, which aims at meeting the requirements from the secondary users upon guaranteeing the requirements from the primary users. To reach this goal, we provide a cognitive radio CSMA/CA protocol, CR-CSMA/CA. Based on user differentiation, CR-CSMA/CA can provide a high priority for primary users, and a low priority for secondary users. Moreover, an analytical model is proposed to analyze the performance of CR-CSMA/CA under saturation cases. Extensive simulations are also carried out to evaluate the performance of CR-CSMA/CA.
Keywords :
carrier sense multiple access; cognitive radio; femtocellular radio; mobile computing; wireless LAN; CR-CSMA/CA protocol; cognitive radio; femto-WLAN; user differentiation; Analytical models; Cognitive radio; Delay; Femtocells; Jitter; Mathematical model; Multiaccess communication; CSMA/CA; Cognitive Radio; Femtocell; MAC; WLAN;
Conference_Titel :
Communication Software and Networks (ICCSN), 2011 IEEE 3rd International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-485-5
DOI :
10.1109/ICCSN.2011.6013657
