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Narar City, Nara, Japan
Jan. 28, 2002 to Feb. 1, 2002
ISBN: 0-7695-1450-2
pp: 126
Masato Tsuru , Kitakyushu Research Center of TAO and GENESIS Project, Telecommunications Advancement Organization of Japan
Tetsuya Takine , Kyoto University, Japan
Yuji Oie , Kyushu Institute of Technology, Japan
ABSTRACT
As the Internet is shifting towards a reliable QoS-aware network, accurately synchronized clocks distributed in the Internet become more significant. Network Time Protocol (NTP) is broadly deployed in the Internet for clock synchronization among distributed hosts, but it is weak in asymmetric paths, i.e., it cannot accurately estimate the clock offset between two hosts when the forward and backward paths between them have different one-way delays.In this paper, we focus on estimating the offset and the skew of a clock from one-way delay measurement between two hosts, and propose an idea for improvement of such estimations, which reduces estimation errors in case that the forward and backward paths have different bandwidths that is one of main factors of the asymmetric delays.
INDEX TERMS
Measurement and Monitoring, Distributed clock synchronization, One-way delay
CITATION
Masato Tsuru, Tetsuya Takine, Yuji Oie, "Estimation of Clock offset from one-way delay measurement on asymmetric paths", SAINT-W, 2002, International Symposium on Applications and the Internet Workshops (SAINTW'06), International Symposium on Applications and the Internet Workshops (SAINTW'06) 2002, pp. 126, doi:10.1109/SAINTW.2002.994563
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