QoS-aware MAC protocols for wireless sensor networks: A survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
Journal of Network and Computer Applications
International Journal of Sensor Networks
Analysis of a prioritized contention model for multimedia wireless sensor networks
ACM Transactions on Sensor Networks (TOSN)
QoS in Wireless Multimedia Sensor Networks: A Layered and Cross-Layered Approach
Wireless Personal Communications: An International Journal
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The media access control (MAC) protocol in wireless sensor networks provides a periodic listen/sleep state for protection from overhearing and idle listening. However, many scenarios and applications exist in which sensor nodes must send data quickly to destination nodes. This paper proposes the priority-based quality-of-service MAC (PQMAC) protocol for wireless sensor networks. We use data priority levels to differentiate among data transmissions, and propose a MAC protocol based on these levels. This protocol manages scheduling by adaptively controlling network traffic and the priority level. We focused on reducing the latency of the message transmission from the source to the destination. Simulation results showed that PQMAC reduces latency problems in wireless sensor networks while maintaining energy efficiency.