Abstract: The advancement in semiconductor technology has enabled the evolution of low cost and less power sensor nodes for transmitting the data through wireless communication. Different sensing applications have also come in to existence. The sensors applied in various environmental monitoring such as battlefield surveillance for military purpose, intrusion detection in secure data transmission etc., the most important challenge in a Wireless Sensor Network (WSN) is to preserve the limited power resources of sensors and extend the network lifetime of the WSN. The sensor nodes deliver sensed data back to the sink through multiple hops. The sensor nodes that are located near the sink will observe more battery power and quickly drain out their battery energy, results in shorter network lifetime. By the relocation of sink, the lifetime of the network is extended as well as to minimize battery energy consumption in a particular group of sensor nodes. In this study, we propose a moving strategy for the sink. The sink movement is based on their residual energy of the cluster head. The lower the residual energy the closer is the sink with the cluster head. The proposed mechanism uses information related to the battery energy of cluster heads and the relocating scheme for the sink. Secondly the comparison between the circular movement of sink and movement of sink along diameter of the circle is done.
P. Sachidhanandam and G. Singaravel, 2016. Efficient Data Aggregation in Sensor Nodes Through Linear Motion of Mobile Sink. Asian Journal of Information Technology, 15: 2679-2682.