QoS Routing Algorithms for Wireless Sensor Networks

Wireless Sensor Networks are composed of inexpensive, low powered micro-sensor nodes capable of sensing, processing, and communicating with limited computational resources. The sensor nodes organize themselves dynamically to form a network and communication is established between the nodes through broadcasting using radio signals. WSNs do not have a definite fixed infrastructure and hence the network topology changes continuously based on the type of sink, number of hops, types of nodes, and type of scheduling. Wireless Sensor Networks basically keep track of the physical environment and co-operatively transmit data to the destination via the self organized network. A large amount of sensor nodes are widely deployed at high density regions where surveillance and monitoring is required, especially, at the frontiers of land, medical applications, commercial, industries, home automation