Study of QoS for Heterogeneous Wireless Multimedia Sensor Networks

With the rapid development of heterogeneous wireless multimedia sensor networks, how to satisfy all the requirement of data source and provide QoS for it becomes a hot research issue. Differentiated Queuing Service (DQS) is introduced into wireless multimedia sensor network. Based on the algorithm, scalar node can inform sink in time and real time traffic can be forwarded rapidly through setting packet lifetime. The result of simulation show that the sink can gather enough event scalar packets and real time packets delay is satisfied. The effectiveness of the method is verified.