Availability-Aware Service Provisioning with Backup Sub-chain-enabled Sharing
Yuncan Zhang, Fujun He, Eiji Oki · GLOBECOM 2022 - 2022 IEEE Global Communications Conference · 2022
This paper proposes an availability-aware service provisioning model with backup sub-chain-enabled sharing in network function virtualization to minimize the deployment cost. A sub-chain consists of a set of ordered VNFs that corresponds to a part of or the whole function chain of a service. Different from a conventional model in which a backup sub-chain is dedicated to protecting a primary sub-chain of one service, the proposed model allows the backup sub-chain sharing among services to reduce the deployment cost. Due to the complexity of the investigated problem, a heuristic is designed to tackle it. The numerical results show that the proposed model achieves lower deployment cost with satisfying the availability requirement than the conventional one.