EFFICIENT AND SECURE ROUTING PROTOCOL FOR WIRELESS SENSOR NETWORKS THROUGH SNR BASED DYNAMIC CLUSTERING MECHANISMS

摘要

Advances in Wireless Sensor Network technology have enabled small and low-cost sensors with the capability of sensing various types of physical and environmental conditions, data processing, and wireless communication. In the Wireless Sensor Network (WSN), the sensor nodes have a limited transmission range and their processing and storage capabilities as well as their energy resources are limited. An efficient and secure routing protocol for Wireless Sensor Networks through SNR-based dynamic clustering mechanisms can partition the nodes into clusters and select the Cluster Head (CH) among the nodes based on the energy, and non CH nodes join with a specific CH based on the SNR values. The clustering technique is effective in prolonging the lifetime of the WSN [3]. Single cluster head in a cluster-based replication to improve the energy consumption rate, such as clustering, efficient routing, and data aggregation using Single Clustering head is used. The simulation result demonstrates that the dual cluster heads in distributed hash table replication can improve the performances of a replica manager with respect to updates propagation in comparison to that of a single cluster head in distributed hash table replication system. The authors assume that replicas refer to identical copies of a file and replica managers are those mobile nodes that hold one or multiple replicas. Replica managers accept query requests from other mobile nodes and reply with the requested files.