A hybrid MAC protocol for wireless sensor network
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
SLTP: scalable lightweight time synchronization protocol for wireless sensor network
MSN'07 Proceedings of the 3rd international conference on Mobile ad-hoc and sensor networks
An energy efficient and fault-tolerant clock synchronization protocol for wireless sensor networks
COMSNETS'10 Proceedings of the 2nd international conference on COMmunication systems and NETworks
A MAC scheme for avoiding inter-cluster collisions in wireless sensor networks
ICACT'10 Proceedings of the 12th international conference on Advanced communication technology
Achieving Energy Conservation by Cluster Based Data Aggregation in Wireless Sensor Networks
Wireless Personal Communications: An International Journal
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In this paper, we propose the cluster-based hierarchical time synchronization protocol(CHTS) for wireless sensor networks(WSN). To couple the network with real world tightly, we provide a networkwide time synchronization through the introduction of abstractions for cluster and hierarchy. Generally the error of time synchronization has the tendency of being accumulated as the hop count along the synchronization path increases in multi-hop wireless sensor network. Thus we cluster the randomly deployed nodes to decrease the hop count along the synchronization path. We then apply different optimal synchronization mechanisms to the cluster heads and cluster members for the sake of power efficiency through an explicit broadcast manner. We prove the performance enhancements with simulation comparisons.