Energy Efficient Data Collection for Mobile Users in Wireless Sensor Networks Using SCFT Protocol

Abstract: In wireless sensor network (WSN) the data collection is more challenging one, because each node in the network having limited bandwidth and energy level. With the aim of reducing energy consumption and to achieve high data accessibility with low communication cost in the presence of multiple next hop nodes, the proposed approach is designed with 3 phases (i) initialization phase (ii) packet-splitting phase (iii) forwarding phase. Before the collection of data from sensor node, the sink node broadcast the message to all sensor nodes in the network to form the route path from the sensor to sink. To form the route path the proposed system incorporate the method of Self Centered Friendship (SCF) that means each node will consider itself as root node and appends the nodes that are connected to them by one hop. After the basic formation of SCF Tree the system moves forward with help of CRT for splitting the packets. The Chinese Remainder Theorem (CRT) is characterized by a simple modular division between the integers. Finally the system simply forwards the subpackets towards the sink which broadcast the message for data. Once all sub packets (called CRT components) are received correctly the sink node will recombine them using mask. When, compared to the existing data collection techniques data collection using SCF Tree with CRT based packet forwarding is found to produce the best result in terms of energy consumption, data accessibility and low communication cost.

Keywords: Eenergy efficiency, data collection, mobile user, packet splitting, wireless sensor networks.