Simple Active Period Selection Scheme for Cluster-Based IEEE 802.15.4 WSNs with Dynamic Network Changes

This paper investigates simple active period selection mechanism for the cluster based WSNs employing traffic adaptive IEEE 802.15.4 beacon enabled mode, and proposes an autonomous distributed superframe duration (SD) selection scheme to reduce beacon collisions by using simple control mechanism. The proposed scheme autonomously selects an active SD by using beacon reception power monitoring with distributed fashion and also introduces a beacon status notice from sensor nodes (SNs) to their parent cluster heads (CHs) in order to prevent unnecessary SD selection at CHs. The results evaluated by computer simulation show that the proposed scheme can improve the tars mission performance while keeping the better power consumption performance in cluster-based WSNs under cluster mobility environments.