Abstract
—a wireless sensor network is composed of tiny sensor nodes. Each sensor node is battery operated and has limited capacity for specific number of transmission rounds. In some applications of sensor nodes, replacement of batteries is not possible; this limitation cause energy constrain for wireless sensor networks. Due to this restriction, energy efficient routing protocols have gained vital importance. Many routing protocols have been developed to improve the lifetime of wireless sensor networks. In this paper one of the routing protocols, powerefficient gathering in sensor information systems (PEGASIS) is modified as PEGASIS Improved Chain Formation (PICF) by overcoming drawbacks in the existing protocol such as technique of chain construction, selection of lead node and deletion of dead nodes from the new chain formation. Simulation results of the proposed protocol are compared with PEGASIS and one of its variant PEGASIS Double Cluster Head (PDCH) to demonstrate its outperformance.

Muhammad Awais Rafiq, Muhammad Ali. (2015) Energy Efficient Protocol with Low Latency for Wireless Sensor Networks, Journal of Space Technology , Volume 5, Issue 1.
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