An energy-efficient QoS-aware routing algorithm for wireless multimedia sensor networks

Sensor nodes in WMSNs should be able to collect various forms of sensing data, prioritize each form of data based on the application service request conditions, and provide a certain degree of Quality of Service (QoS) guarantee. In order for sensor nodes to provide QoS, they must maintain routing information based on delay, reliability, and energy efficiency. Existing routing algorithms transmit many routing control messages to reflect dynamic network conditions. In this paper, we propose a routing protocol that can provide QoS that appropriately reflects changes in network status regarding reliability and delay, even in circumstances with a deficiency in sensor node resources. Our algorithm has the advantage of minimizing the routing control messages and therefore can safely operate from an energy-efficient perspective, as the algorithm utilizes broadcast messages regularly transmitted by the sink node. We observe that the sensor node establishes a routing table based on the shortest route towards a sink, the energy efficiency of the foothold, and the least amount of congestion. © 2014 SERSC.