Recommendation ITU-T G.9804.1 Amendment 2 (01/2024) Higher speed passive optical networks – Requirements
Summary
History
FOREWORD
Table of Contents
1 Scope
2 References
3 Terms and definitions
     3.1 Terms defined elsewhere
     3.2 Terms defined in this Recommendation
4 Abbreviations and acronyms
5 Conventions
     5.1 Optical access concepts
     5.2 Higher speed PON system reference points
     5.3 Optical power and loss parameters
     5.4 Dynamic range, sensitivity, and overload
     5.5 Sensitivity and overload in the presence of FEC
     5.6 Reach and distance
     5.7 Use of the term PON
     5.8 Use of the term ODN
     5.9 Use of the terms ONU and ONT
     5.10 Use of the terms T-CONT and Alloc-ID
     5.11 Use of the terms bandwidth assignment and bandwidth allocation
     5.12 Use of the terms band and range
     5.13 Transmitter enable control and associated transient times
6 Architecture of the HSP
     6.1 Network architecture
     6.2 System overview
          6.2.1 Common requirements
          6.2.2 50G TDM PON system requirements
          6.2.3 50G TWDM PON system requirements
          6.2.4 Higher speed point-to-point WDM PON (PtP WDM PON) system requirements
     6.3 Network reference configurations
7 Migration scenarios
     7.1 Coexistence
     7.2 Migration path options
     7.3 Migration to 50G TDM PON
8 Service requirements
     8.1 Service specific requirements
     8.2 User node interfaces (UNIs)
     8.3 Service node interfaces (SNIs)
     8.4 Access node interfaces (ANIs)
     8.5 Latency
          8.5.1 Latency for voice service and internet services
          8.5.2 Latency for wireless transport services
          8.5.3 Latency for advanced video services
     8.6 Synchronization features and quality
     8.7 System flexibility
9 Physical layer requirements
     9.1 System capacity
     9.2 Fibre characteristics
     9.3 Optical loss budget
     9.4 Split ratio
          9.4.1 Split ratio of 50G TDM PON
          9.4.2 Split ratio of 50G TWDM PON
          9.4.3 Branch capability of high speed PTP WDM PON
     9.5 Fibre distance
     9.6 Optical spectrum issues and availability
10 System level requirements
     10.1 Authentication/encryption
     10.2 Dynamic bandwidth assignment (DBA)
     10.3 Dual-rate support
     10.4 Colourless ONUs of 50G TWDM PON and PtP WDM PON
     10.5 Spectral flexibility of 50G TWDM PON and PtP WDM PON
     10.6 Rogue and alien ONU/OLT detection and mitigation
     10.7 Reach extender requirements
     10.8 Power reduction
     10.9 PON supervision and OAM functions
     10.10 Provisioning and management
     10.11 OLT and ONU environmental and physical requirements
     10.12 Eye safety
     10.13 Interoperability
     10.14 Transport of wireless fronthaul links over the access system
     10.15 Slicing requirement
     10.16 Optional flexible FEC in upstream
11 Resilience and protection on ODN
     11.1 Type B protection
     11.2 Type C protection
     11.3 Type W protection (for 50G TWDM PON and PTP WDM PON)
     11.4 Protection category
Appendix I  OLT resilience configuration of 50G TWDM PON
     I.1 OLT resilience configuration
Bibliography