On the feasibility of service composition in a long-reach PON backhaul

As network architectures are continuously evolving and being integrated with new technologies to meet the demands and requirements of future applications, many new possibilities and challenges emerge. Additionally, the evolution of user devices has brought other new possibilities, where devices in the same vicinity can offer and exchange services with each other. A vision that has led to developing various service discovery and composition models that aim to satisfy different constraints while ensuring a better quality of service. In this paper, we consider service discovery and composition in an optical access network, serving as a backhaul for a wireless front-haul, and examine how it can be greatly affected by the underlying bandwidth allocation scheme. We compare the performances of centralized and decentralized-based service compositions and study their side effects on upstream traffic. Numerical results demonstrate how decentralized allocation can be much better suited for supporting such service models and associated traffic in terms of both service delays and side effects on regular upstream traffic.