Repeatable experiments with mobile nodes in a relocatable WSN testbed
2010 (English)In: Proc. 6th IEEE International Conference on Distributed Computing in Sensor Systems Workshops: DCOSSW 2010, IEEE Computer Society, 2010, 1-6 p.Conference paper (Refereed)
We present Sensei-UU, a testbed that supports mobile sensor nodes. The design objectives are to provide wireless sensor network (WSN) experiments with repeatable mobility and to be able to use the same testbed at different locations, including the target location. The testbed is inexpensive, expandable, relocatable and it is possible to reproduce it by other researchers. Mobile sensor nodes are carried by robots that use floor markings for navigation and localization. The testbed is typically used to evaluate WSN applications when sensor nodes move in meters rather than millimeters, eg. when human carries a mobile data sink (mobile phone) collecting data while passing fixed sensor nodes. To investigate the repeatability of robot movements, we have measured the achieved precision and timing of the robots. This precision is of importance to ensure the same radio link characteristics from one protocol experiment to another. We find that our robot localization is accurate to #x00B1;1 cm and variations in link characteristics are acceptably low to capture fading phenomena in IEEE 802.15.4. In the paper we show repeatable experiment results from three environments, two university corridors and from an anechoic chamber. We conclude that the testbed is relocatable between different environments and that the precision is good enough to capture fading effects in a repeatable way.
Place, publisher, year, edition, pages
IEEE Computer Society, 2010. 1-6 p.
IEEE 802.15.4;Sensei-UU;anechoic chamber;mobile data sink;mobile sensor nodes;relocatable WSN testbed;repeatable mobility;robot movements;wireless sensor network;anechoic chambers (electromagnetic);mobile robots;mobility management (mobile radio);path planning;wireless sensor networks;
Computer Engineering Communication Systems
Research subject Computer Science with specialization in Computer Communication
IdentifiersURN: urn:nbn:se:uu:diva-136394DOI: 10.1109/DCOSSW.2010.5593278OAI: oai:DiVA.org:uu-136394DiVA: diva2:376728