Approach for Quality of Service Provisioning in Cognitive Radio Networks
Nnenna Christine Martin, Ifeanyi Herbert Ubaechu · 2017
Advances in technology with unprecedented increase in its demand, stringent regulation of an invaluable natural resource, as well as the misuse of this resource, has given rise to the need for and the advent of cognitive radio technology. With dynamic spectrum access (DSA), secondary users can opportunistically use the frequency spectrum of legal primary owners at idle time, as long as these primary users are not disrupted by interference. This ensures increased efficiency in wireless communication. However, cognitive radio (CR) is not without some significant attendant challenges such as in spectrum sensing, spectrum sharing, quality of service (QoS) provisioning, network topology flexibility etc. This research work is targeted at provisioning QoS in CR. We employ a Medium Access Control wireless standard, the ZigBee protocol in achieving this goal. This IEEE 802.15.4 is confirmed by simulation to be QoS-enabled, with inherent properties in favour of the cognitive radio network environment.