Rec. ITU-T G.8300 (05/2020) Characteristics of transport networks to support IMT-2020/5G Summary History FOREWORD Table of Contents 1 Scope 2 References 3 Definitions 3.1 Terms defined elsewhere 3.2 Terms defined in this Recommendation 4 Abbreviations and acronyms 5 Conventions 6 Reference transport network architecture for support of 5G mobile networks 7 Transport network OAM requirements 7.1 Path layer OAM requirements 7.1.1 Delay measurement 7.2 Section layer OAM requirements 8 Considerations related to 5G network slicing 9 Frequency and time synchronization in the transport network 9.1 Synchronization requirement 9.2 Synchronization solution for transport network 10 Survivability techniques in transport networks to support 5G Appendix I End-to-end service latency in 5G networks Bibliography