Exploring an IPv6 protocol for mobile sensor network communication
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Date
2013
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University of New Brunswick
Abstract
This research explores IPv6 in mobile wireless sensor networks (WSNs). An indoor
WSN mobile sensor network testbed of length 24 m was built and used for mobile
WSN testing. The test network enabled the use of one or two moving nodes and six
stationary nodes. TelosB sensor nodes were used for testing.
The thesis presents a detailed explaination of sending and receiving User Datagram
Protocol (UDP) packets using the IPv6 Low Power Wireless Area Network (6LoWPAN)
software stack in the Berkeley Low power Internet Protocol (BLIP) implementation
of Tiny0S 2.1.1 and 2.1.2. A Java based Web application called WSNWeb
was built that displays real-time route topology changes and sensor data. The data
is updated in a log file, and used to compute packet loss and determine the number
of route topology changes.
We created 35 test cases, 15 with two moving nodes, and 20 with one moving node.
On a test track, model train velocities between 0.076 m/s and 0.376 m/s were used,
with three different routing table update periods (RTUPs) of 60 s, 6 s, and 0.6 s. The
results show that the one moving node 0.6 seconds RTUP has significantly higher
packet loss (up to 1.4% compared to 0.16%) over a five hour test compared to RTUPs
of 60 s and 6 s. The two moving nodes test shows that RTUP of 0.6 s still has a
higher packet loss compared to RTUPs of 6 sand 60 s.