论文信息 - In-service monitoring techniques for cell transfer delay and cell delay variation in ATM networks

In-service monitoring techniques for cell transfer delay and cell delay variation in ATM networks

Cell transfer delay (CTD) and Cell delay variation (CDV) are ATM performance parameters. Monitoring CTD and CDV requires procedures for in-service measurement or estimation and for gaining the delay distribution statistics. This paper discusses the origin and definition of CTD and CDV, the latter being defined in terms of 2-point CDV and l-point CDV. It outlines fundamental measurement techniques based on operation and maintenance (OAM) performance monitoring functions. Also, methods for estimating CTD and 2-point CDV are presented, which do not rely on the availability of synchronized clocks at the measurement points. They are based on a least-square regression analysis which estimates the time and frequency offset of the remote clock.

Carsten Roppel

[1] Andrzej Duda,et al. Estimating Global Time in Distributed Systems , 1987, ICDCS.

[2] W.J. Klepczynski. Modern navigation systems and their relation to timekeeping , 1983, Proceedings of the IEEE.

[3] R. J. Kulpinski,et al. Dissemination of System Time , 1973, IEEE Trans. Commun..

[4] Laurie Cuthbert,et al. ATM: The broadband telecommunications solution , 1993 .

[5] S.C. Farkouh. Managing ATM-based broadband networks , 1993, IEEE Communications Magazine.

[6] Naoshi Sato,et al. Monitoring method for cell transfer performance in ATM networks , 1992 .

[7] J. Gruber. Performance and fault management functions for the maintenance of SONET/SDH and ATM transport networks , 1993, Proceedings of ICC '93 - IEEE International Conference on Communications.