Achieving Resilient Data Availability in Wireless Sensor Networks
by Xin Xu, Haitao Zhang, Tianxiang Li, Lixia Zhang.
In Proceedings of the IEEE International Conference on Communications, May 2018.
Currently, most Wireless Sensor Networks (WSNs) utilize sleeping mechanisms to conserve energy, which introduces the problem of data availability. To address this problem, we designed DSSN, a Dataset Synchronization protocol for WSN with Sleeping sensors over Named Data Networking (NDN). DSSN divides sensors into groups, each has a shared dataset; through dataset synchronization within each group, DSSN ensures that the group’s latest dataset is always accessible from its active sensors. DSSN utilizes State Vector to enable reliable dataset synchronization, and utilizes NDN’s Interest aggregation and Data caching to optimize energy consumption. We evaluated DSSN through extensive simulation experimentation, and our results show that DSSN ensures data availability close to 100% under various network conditions with negligible overhead.