WSNTB: A Testbed for Heterogeneous Wireless Sensor Networks
In this paper, the authors design and implement a testbed to realize various experiments in heterogeneous wireless sensor networks. Their implementation includes hardware infrastructure and software framework. The hardware infrastructure consists of servers, gateways with converters, and sensor nodes in three-tier. Their testbed can support different sensor nodes with USB or RS232 interface. Users can experiment with real hardware resources and interactive with their testbed in real-time. Here, they deploy two kinds of self-designed sensor nodes, Octopus I and Octopus II, in their testbed. The Octopus sensor nodes are compatible with IEEE 802.15.4/ZigBee standard for experiments.