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TelecomTiming metrics systems require appropriate metrics for timing quality evaluation. The concept of time error (TE)/time interval error (TIE) is used for these purposes [G.810]. Packet Delay Variation (PDV) is used for packet transmission as equivalent to TE. For overcoming TIE time-dependent conduct, metrics use sliding window approach to analyze the clock stability over different observation intervals. In addition, Allan family metrics (ADEV, MDEV, TDEV etc.) remove the time-dependence by averaging on the observation time intervals. This chapter is focused on the general features and practical application of МTIE(τ) and TDEV(τ)/ADEV(τ)/MDEV(τ)—the main wander parameters which have traditionally been used for timing quality evaluation in telecom equipment/networks. Maximum Time Interval Error (MTIE) and Maximum Average Time Interval Error (MATIE) are considered in detail, including general properties and practical applications. Some simplified fast algorithms of MTIE calculation are presented in the chapter, e.g. selective and decimal decomposition algorithms.

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Timing Metrics

  • 章节

  • 发表日期：

    2026年

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  • Nickolay Biriukov,
  • Nataliya Triska

摘要

TelecomTiming metrics systems require appropriate metrics for timing quality evaluation. The concept of time error (TE)/time interval error (TIE) is used for these purposes [G.810]. Packet Delay Variation (PDV) is used for packet transmission as equivalent to TE. For overcoming TIE time-dependent conduct, metrics use sliding window approach to analyze the clock stability over different observation intervals. In addition, Allan family metrics (ADEV, MDEV, TDEV etc.) remove the time-dependence by averaging on the observation time intervals. This chapter is focused on the general features and practical application of МTIE(τ) and TDEV(τ)/ADEV(τ)/MDEV(τ)—the main wander parameters which have traditionally been used for timing quality evaluation in telecom equipment/networks. Maximum Time Interval Error (MTIE) and Maximum Average Time Interval Error (MATIE) are considered in detail, including general properties and practical applications. Some simplified fast algorithms of MTIE calculation are presented in the chapter, e.g. selective and decimal decomposition algorithms.