Abstract:

With the rapid development of wireless multimedia sensor networks,how to guarantee QoS has become a hot research issue. In order to realize the priority service of real-time data,this paper introduces the differentiated queuing service algorithm in wireless multimedia sensor networks. First,the principle of the differentiated queuing service is analyzed. Then,according to the relationship between the transmission rate of data sources and the bandwidth,the relationships among the maximum queue length of nodes,the scalar packet lifetime and the real-time packet lifetime are discussed in three situations. When some conditions of this relationship are satisfied,the realtime packet can be rapidly and timely forwarded. Finally,the correctness and effectiveness of the proposed method are verified by means of simulation experiments.

Key words: wireless multimedia sensor network, quality of service, differentiated queuing service, packet lifetime, transmission rate, bandwidth