ETRI Journal

Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Wirelessly Synchronized One-Way Ranging Algorithm with Active Mobile Nodes

  • Nam, Yoon-Seok (Department of Information and Communication Engineering, Dongguk University, IT Convergence Technology Research Laboratory, ETRI) ;
  • Kang, Bub-Joo (Department of Information and Communication Engineering, Dongguk University, Broadcasting & Telecommunications Convergence Research Laboratory, ETRI) ;
  • Huh, Jae-Doo (IT Convergence Technology Research Laboratory, ETRI) ;
  • Park, Kwang-Roh (IT Convergence Technology Research Laboratory, ETRI)
  • Received : 2008.10.06
  • Accepted : 2009.05.26
  • Published : 2009.08.30
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Abstract

In this letter, we propose a one-way ranging algorithm that is based on wireless synchronization with measured timestamps and clock frequency offsets. In our proposed algorithm, an active mobile node initiates a ranging procedure by transmitting a ranging frame, and the anchor nodes report their timestamps for the received ranging frame to a reference anchor node. The synchronization of a pair of nodes is provided with instantaneous time information, and the corresponding difference of distances can be calculated.

Keywords

References

  1. IEEE802.15.4a/D7, Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Low-Rate Wireless Personal Area Networks (LR-WPANs): Amendment to Add Alternate PHY, Jan. 2007.
  2. Y. Qi and R. Kohno, “Mitigation of Sampling-Induced Errors in Delay Estimation,” IEEE Int’l Conf. Ultra-Wideband, Sept. 2005, pp. 402-407.
  3. J. Elson, L. Girod, and D. Estrin, “Fine-Grained Network Time Synchronization Using Reference Broadcasts,” Proc. Operating Syst. Design and Implementation, vol. 36, Dec. 2002, pp. 147-163.

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