Toward end-to-end latency management of 5G network slicing and fronthaul traffic (Invited paper)

5G network slicing allows operators to deploy virtual connectivity services tailored for specific purposes on top of the same underlying physical infrastructure. For some 5G services, the telecommunication operator needs to provide the customer with real-time information of the end-to-end Quality of Service for a particular slice. This paper focuses on the challenges behind this target, how per-layer per-segment monitoring can be performed based on common open interfaces to standard OAM protocols, and provides practical rules to plan end-to-end latency for slices. Then it reviews a few latency engineering approaches for fronthaul traffic from work carried out in this research area.