Supplement 71 to ITU-T G-series Recommendations (04/2021) Optical line termination capabilities for supporting cooperative dynamic bandwidth assignment
Summary
History
FOREWORD
Table of Contents
1 Scope
2 References
3 Definitions
     3.1 Terms defined elsewhere
     3.2 Terms defined in ITU-T PON Recommendations and used in this Supplement
4 Abbreviations and acronyms
5 Conventions
6 Introduction
7 Generic OLT capabilities
8 Use case 1 – Transport of mobile fronthaul using O-RAN CTI
     8.1 Types of MFH traffic and related connectivities
          8.1.1 S-plane
          8.1.2 M-plane
          8.1.3 U-plane
          8.1.4 C-plane
          8.1.5 Prerequisite for start-up of O-RU
     8.2 Sharing a common time of day reference with O-DU
     8.3 Support of CTI message exchange with O-DUs
     8.4 Interpretation of CTI messages by OLT
          8.4.1 CTI signalling messages
          8.4.2 CTI report messages
          8.4.3 Uplink latency
     8.5 Interpretation for CO DBA
          8.5.1 Correlation of message report(s) to T-CONT(s)
          8.5.2 Correlation of CTI session IDs to CTI clients
          8.5.3 BW allocation: grants and timing of the grants
     8.6 PON ranging notification
     8.7 Time alignment between RAN and PON
          8.7.1 RAN time structures
          8.7.2 Accuracy of time reference
          8.7.3 Impact of time alignment of CO DBA update cycles to time interval boundaries
          8.7.4 Frequency of updates
          8.7.5 Summary
     8.8 Handling of mix of latency-sensitive and latency-tolerant applications on the same PON
     8.9 Management of CTI functionality
          8.9.1 Connectivity for exchanging CTI messages between an OLT and O-DUs
          8.9.2 Configuration parameters for CTI server in OLT
          8.9.3 Configuration and operation of ONUs
9 Other use cases
Bibliography
<\pre>