Authors: Qi Liu; Kai Zhang; Xiaodong Liu; Nigel Linge
Addresses: Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China ' Jiangsu Engineering Centre of Network Monitoring, School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China ' School of Computing, Edinburgh Napier University, 10 Colinton Road, Edinburgh EH10 5DT, UK ' School of Computing Science and Engineering, The University of Salford, Salford, Greater Manchester M5 4WT, UK
Abstract: In a traditional wireless sensor network (WSN) with static sinks, sensor nodes close to the sink run out of their batteries quicker than other nodes due to the increased data traffic towards the sink. These nodes with huge data traffic are easy to become hotspots. Therefore, such networks may prematurely collapse since the sink is unreachable for other remote nodes. To mitigate this problem, sink mobility is proposed, which provides load-balanced data delivery and uniform energy dissipation by shifting the hotspots. However, the latest location update of the mobile sink within the network introduces a high communication overhead. In this paper, we propose Grid Routing, an energy-efficient mobile sink routing protocol, which aims to decrease the advertisement overhead of the sink's position and balance local energy dissipation in a non-uniform network. Simulation results indicate that the Grid Routing shows better performance compared with existing work.
Keywords: hotspots; hierarchical structure; sink mobility; virtual infrastructure; non-uniform network.
International Journal of Sensor Networks, 2017 Vol.25 No.2, pp.93 - 103
Received: 29 Sep 2016
Accepted: 13 Oct 2016
Published online: 03 Oct 2017 *