Duty‐cycle SN‐multi‐point relay algorithm for mobile sink wireless sensor networks
Yasir Faheem, Saâdi Boudjit · IET Wireless Sensor Systems · 2015
In wireless sensor networks, transceiver's utilisation should be minimised as it is the largest power consuming component of a wireless sensor node. In this study, the authors propose a distributive topology‐control algorithm which minimises network's power consumption by allowing the non‐relay nodes in the data dissemination tree to switch‐off their respective transceivers when communication is not desired. In this algorithm, named duty‐cycle SN‐multi‐point relay (MPR), the sink follows a sojourn‐based mobility model and it uses MPR broadcast algorithm for broadcasting its periodic sink location update packets to the network which results in a tree consisting of relay/MPR and non‐relay/non‐MPR nodes. Duty‐cycle SN‐MPR algorithm minimises power consumption by allowing the non‐relay nodes to switch‐off their transceivers in each sink sojourn round. Moreover, all nodes switch‐off their transceivers when the sink starts moving to its next sojourn position. Performance evaluation through simulations in network simulator 2 show that the proposed algorithm efficiently minimises the network's power consumption and also offers a better load distribution which helps in increasing the network lifetime.