Priority and Traffic-Aware Contention-Based Medium Access Control Scheme for Multievent Wireless Sensor Networks

The requirement of high quality service (QoS) in multi-priority industrial and domestic sensor networks poses new challenges to the increasing adoption Internet Things (IoT). In Multi-event Wireless Sensor Networks (MWSNs), nodes generate different types data packets i.e., urgent (high priority) or normal (low priority), with traffic proportions. High priority require an assurance faster transmission higher reliability network. literature, existing medium access control (MAC) protocols for MWSNs have limited consideration supporting Therefore, this paper proposes energy efficient MAC scheme that incorporates dynamic proportion, called PriTraCon-MAC. PriTraCon-MAC supports multi-events by considering four levels uses a novel approach adjusts contention window adaptively. Due that, Request-To-Send frame can be sent earlier window, resulting corresponding acceptance receiver. Furthermore, mathematical delay analysis proportions has also been undertaken. addition, implemented OMNET++ Castalia its performance evaluated terms packet delay, reliability, consumption, compared Timeout Multi-priority based-MAC (TMPQ-MAC) under various network conditions. simulation results demonstrate offers lower average achieves significantly success rate, while reducing consumption up 80% when TMPQ-MAC protocol.