Research On Video Stream Routing Algorithm For Wireless Sensor Networks

Wireless sensor network is the current hot research field.The wireless multimedia sensor network composed of visual sensor nodes can realize the transmission of video stream.It is widely used in video surveillance,environmental monitoring and multimedia information.Compared with the traditional wireless sensor network,video streaming data has a large amount of data,rich business types,reliable transmission and other high requirements.Therefore,it is an urgent problem to study the method of guaranteeing the quality of video stream service in resource-limited wireless multimedia sensor networks.To this end,this paper attempts to study in both routing algorithm and data transmission,the main contents are as follows:(1).Aiming at the problem of providing multi-parameter Qo S guarantee for video transmission in wireless multimedia sensor networks,this paper proposes a multi-path Qo S routing algorithm based on ant colony optimization(AMRQR).The algorithm considers the Qo S parameters such as bandwidth,average delay,packet loss rate of the network.The average residual energy of the nodes is used as the influencing factor of the routing.The residual energy of network nodes is classified,and the energy consumption weight factor is dynamically adjusted according to the remaining energy level of the nodes.At the same time,in order to avoid unbalanced network load caused by single-path transmission,this paper uses the multi-path transmission.The simulation results show that the proposed algorithm can balance the network energy and improve the real-time and reliability of network transmission under the condition of satisfying Qo S parameters.(2).Aiming at the problem of limited storage and forwarding capability of wireless sensor nodes,the video surveillance image sequences in wireless multimedia sensor networks are studied in this paper.According to the characteristics of video surveillance,the improved background frame difference algorithm is used to locate the target region of the video frame,and only the target area is transmitted.By periodically establishing a video frame background model,the video frame and the background frame are subjected to interframe difference operation,the transmitted video frame data is classified according to the difference between the two frames,and the corresponding transmission strategy is selected according to the different levels.The experimental results show that the proposed method can effectively reduce the amount of video data transmission and greatly reduce the transmission energy and extend the network life cycle under the premise of guaranteeing the quality of transmitted image.