No abstract

In many wireless sensor networks due to the limited energy of sensor nodes energy conservation is one of the most important challenges. To enhance the lifetime of the network emphasis is given to design energy efficient routing algorithms. In WSN, sensor nodes which are nearer to the base station having a task of collecting data for the entire area and send to the base station. This node has an additional load and depletes its energy faster. This paper addresses the problem of lifetime maximization by load balancing. This paper proposes energy efficient load balanced data collection algorithm considering different network parameter (e.g., density, degree). In this method, Data collection tree topology is built at the sink node. Performance of the proposed algorithm is evaluated by considering various parameters like topology, availability of resources and the energy utilization of nodes in different paths of the tree, which may vary and ultimately impacts the overall network lifetime. Sensor nodes are switched from their original path to other based on the load and it reduces communication overhead.

Wireless Sensor Network (WSN) is the group of sensing computing and communication components that gives ability to sense a physical phenomenon in a specified environment. The main problem of WSN is energy consumption or battery power, to avoid such problems different type of routing protocols is used. LEACH routing protocol is used to reduce the energy consumption and enhance the battery power and network lifetime. Homogeneous LEACH has some limitation and there is no security provides to sink node. To overcome this limitation of Homo LEACH protocol heterogeneous LEACH protocol with sink node security is used in this paper. In a heterogeneous LEACH two or more different types of nodes with different battery power and functionality are used. Sink node is a sensor node which has large energy capacity and it collects data from other node. Sometime sink node affected by different type of attack such as sinkhole, black hole attack etc. to avoid these types of attack various technique are used such as intrusion detection, watchdog scenario etc.