Enhancing mobile edge caching with bandwidth provisioning in software-defined mobile networks

Abstract

Software-defined networking and mobile edge caching are promising technologies in next generation mobile networks. This paper proposes to jointly optimize bandwidth provisioning and caching strategies in software-defined mobile networks considering the quality of services and limitations of resources. The proposed scheme aims at maximizing gains from dynamically managing caches and efficiently utilizing network resources of the backhaul, spectrum, and cache. Specifically, we model the proposed scheme as a dynamic caching and bandwidth provisioning problem to obtain a sub-optimal solution by using convex optimization. The relaxation method and dual-decomposition method are adopted to solve this problem with low computational complexity. Simulation results are presented to show that the latency is decreased and the utilization of caches is improved in the proposed scheme.