An Algorithm for Resource Allocation without Inter-cluster Collisions in WSN

摘要

TDMA-based MAC protocols have been discussed in WSNs for their energy-efficient performance. Clustering is an effective method for achieving good energy efficiency and flexible scalability, and is often combined with TDMA-based schemes to reduce the cost of idle listening. But conventional TDMA protocols focus on effective intra-cluster communications. The methods don't consider collisions occurring among inter-clusters in WSNs that is extensible to hundreds of thousands of nodes. This paper proposes a TDMA based MAC protocol and a resource allocation algorithm for avoiding inter-cluster collisions among clusters.