Wireless Sensor Network is web of sensors node, which has limiting energy .The main issue to design WSNs is, maximum Lifetime and optimal the energy used in network. Different approaches based upon clustering are proposed for optimum functionality. Quadrature-LEACH (Q-LEACH) for homogenous networks is examined with two gateways which is placed in the sensing area, which is used to enhances network lifetime and optimal utilization of resources. Performance analysis and compared statistic results show that our proposed protocol perform well in terms of energy consumption and network lifetime.
In this paper data compression is becoming more popular, because it helps to reduce the size.A number of clustering protocols have been explored in order to obtain the effective energy usage in WSNs. It is based on randomized rotation of the CHs to distribute the energy load among the sensor nodes evenly in the entire network. Each node elects itself as a CH based on a probabilistic scheme and broadcasts its availability to all the sensor nodes present in the area. The received signal strength is the prime parameter for determining the communication distance between the nodes. The CH performs aggregation of the packets received from all the nodes present in their cluster. Also, all the nodes get a chance to become the CH to balance the overall energy consumption across the network. The aim ofClustering is one of the important methods for prolonging the network lifetime in wireless sensor networks (WSNs). It involves grouping of sensor nodes into clusters and electing cluster heads (CHs) for all the clusters. CHs collect the data from respective cluster"s nodes and forward the aggregated data to base station.by using Huffman encoding techniques [1].
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