Supplement 79 to ITU-T G-series Recommendations (12/2023) Latency control and deterministic capability over a PON system
Summary
History
FOREWORD
Table of Contents
1 Scope
2 References
3 Abbreviations and acronyms
4 Conventions
     4.1 Determinism capability in a PON context
5 Introduction
6 Use case and requirements
     6.1 Use case 1 – Manufacturing industrial PON
          6.1.1 Description
          6.1.2 Expectation of latency/jitter control of PON system
     6.2 Use case 2 – PON system in context of a TSN network
7 Mechanisms for latency control and deterministic improvement
     7.1 Access segment
     7.2 PON-specific parameters influencing latency
          7.2.1 Influence on downstream PON system latency
          7.2.2 Influence on upstream PON system latency
          7.2.3 Influence on user-to-user PON system latency
     7.3 Impact of configuration of PON-specific parameters (TML)
          7.3.1 Control of worst-case downstream latency and jitter
          7.3.2 Minimizing the worst-case (maximum) upstream latency for low-latency traffic
          7.3.3 Minimizing worst-case upstream jitter = maximum latency – minimum latency
          7.3.4 Impact of a quiet window on regular US transmission
     7.4 Practical experience of latency control mechanisms
          7.4.1 Frame-based dense burst allocation mechanism