Low power systems for wireless microsensors
ISLPED '96 Proceedings of the 1996 international symposium on Low power electronics and design
The flooding time synchronization protocol
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
A Mutual Network Synchronization Method for Wireless Ad Hoc and Sensor Networks
IEEE Transactions on Mobile Computing
Optimal clock synchronization in networks
Proceedings of the 7th ACM Conference on Embedded Networked Sensor Systems
Wireless Communications & Mobile Computing - Recent Advances in Wireless Communications and Networks
Self-correcting time synchronization using reference broadcast in wireless sensor network
IEEE Wireless Communications
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A Wireless Sensor Network WSN consists of numerous nodes gathering observations and combining these observations. Often, the timing of these observations is of importance when processing sensor data. Thus, a need for clock synchronisation arises in WSNs. The Clock Sampling Mutual Network Synchronisation CS-MNS algorithm has been proposed to fulfil this role. This paper compares simulation results and testbed results for CS-MNS. The simulations were done using Matlab, the testbed implementation was done in TinyOS 2.1, running on a mix of TelosB and MCIAz motes. The results demonstrate good qualitative agreement between simulation and experimentation in most cases. Quantitatively, the testbed results converge slower and achieve less synchronisation accuracy, however. Using the testbed, we also compare CS-MNS against FTSP, the clock synchronisation protocol provided with TinyOS 2.1. In all scenarios, CS-MNS performans noticeably better than FTSP.