Slice-aware Service Chaining

Among many other key features, the 5G technology introduced the concept of Network Slicing. It supports that different services or even different operators use the same network resources in a dedicated or shared way. On the other hand, QoS for the traffic is mostly provided on the network resources by weighted or strict scheduling. In this paper, we introduce heuristic service chaining solutions that consider shared slicing and apply a kind of preservation of network resources for other slices to hold the QoS expectations. Our numerical results show the advantages of them from the aspects of loads and overloads of links.