LBCC: Load Balanced and Congestion Controlled Routing Protocol for Wireless Multimedia Sensor Network

摘要

Wireless multimedia sensor networks consist of self organised nodes having the capability to sense and transmit multimedia information to the desired destination. These are a type of wireless sensor network to sense and transmit both scalar data as well as multimedia data which includes image, audio and video streams. It is being attracted by the research community because of its widespread applications and affordable cost for delay sensitive multimedia applications. The life of the nodes is a vital factor in routing protocols in this type of network. The life of the network can be increased by balancing the load in the network from source to destination as well as reducing congestion in the network. Congestion at a node occurs when the total rate of input to a sensor node exceeds the rate of output from that node. We propose a cross layer routing protocol "Load Balanced and Congestion Controlled Routing Protocol for Wireless Multimedia Sensor Network (LBCC)", which enhances the life time of the nodes and in turn enhances the aggregate life time of the network. This technique distributes the network load on the nodes evenly across the network and also avoids congestion at each node situated in the path from source to destination. The information provided by the MAC layer is used by the routing layer regarding the ongoing communications of neighbouring nodes in the direction of the destination. The energy consumption of the nodes is balanced by appropriately choosing its next hop. The forwarding nodes are used in such a fair manner that the network remains undivided and also the life of the network increases. The results obtained out of the simulation are quite encouraging as compared to existing protocols in this domain.