Power aware data gathering tree for heterogeneous wireless sensor networks

In Wireless sensor networks the sensed data is collected and transmitted to the base station in the form of tree known as Data Gathering tree. If the number of Data Gathering Trees created for each cycle in wireless sensor networks is more it affects the performance of the entire network. Here only one data gathering tree for each cycle is constructed, so optimizing the network performance. Power optimality is achieved by considering heterogeneous sensors for construction of Data Gathering Tree. A data gathering tree is constructed using proposed algorithm which is a modification of Efficient Data Gathering (EDGE) protocol. It conserves the limited resources of the sensors and avoids both flooding and periodic updating of routing packets. The Tree will be reconstructed upon node failures or addition of new nodes. Simulation results show that the proposed algorithm is enhanced EDGE which deals effectively for loops and optimizes the network performance.