The wireless sensor network technology becomes one of core technologies to make it possible to implement various e-business applications. Energy efficiency is an important issue in wireless sensor networks. IEEE 802.15.4, a representative international standard for wireless sensor networks, provides the beacon enabled mode for energy-efficient communication. However, the beacons may conflict each other when the network is of multi-hop topology such as mesh or cluster-tree topology with beacon-enabled mode. The beacon conflict causes the failure of synchronization between sensor nodes, and affects other nodes in the network in that unsynchronized nodes cannot participate in communication. In this paper, we suggest an energy-efficient beacon scheduling for the wireless sensor networks. Nodes can save their energy duringperiod and prevent beacon conflict using beacon scheduling. We implement the scheduling using QualNet, and evaluate the performance under mesh topology networks. It turns out that the proposed scheduling may improve the energy efficiency in the networks.
[1]
Christian Wietfeld,et al.
A Distributed and Autonomous Beacon Scheduling Algorithm for IEEE 802.15.4/ZigBee Networks
,
2007,
2007 IEEE Internatonal Conference on Mobile Adhoc and Sensor Systems.
[2]
Eduardo Tovar,et al.
TDBS: a time division beacon scheduling mechanism for ZigBee cluster-tree wireless sensor networks
,
2008,
Real-Time Systems.
[3]
Myung J. Lee,et al.
Meshing wireless personal area networks: Introducing IEEE 802.15.5
,
2010,
IEEE Communications Magazine.
[4]
Mário Alves,et al.
Collision-Free Beacon Scheduling Mechanisms for IEEE 802.15.4/Zigbee Cluster-Tree Wireless Sensor Networks
,
2007
.