Active Period Reuse Mechanism for Autonomous Active Period Selection in Cluster-Tree Traffic Adaptive IEEE 802.15.4 WSNs with Cluster Mobility

This paper aims to provide performance enhancement to our previously proposed simple autonomous active period selection scheme for cluster-tree based IEEE 802.15.4 beacon enabled WSNs under cluster mobility environments. The cluster mobility causes severe beacon collisions and greatly degrades the system performance. To enhance the system performance of WSNs with cluster mobility, this paper proposes an active period reuse mechanism to the active period selection scheme, and investigates its system performance. The results evaluated by computer simulation demonstrate the proposed mechanism can improve the system in cluster-tree based WSNs under cluster mobility environments.