Energy- and Bandwidth-Efficient, QoS-Aware Edge Caching in Fog-Enhanced Radio Access Networks

The emerging video services are associated with stringent quality-of-service (QoS) requirements and place high bandwidth demands on the core networks. Edge caching can facilitate QoS while easing requirement from However, such schemes require on-field equipment, in which energy consumption is a function of cache utilization. Designing opportunistic strategies for efficiency therefore essential schemes. This paper studies possibilities achieving efficiency, QoS, low network, an optically fronthauled fog-enhanced radio access network that implements edge caching. An analytical model has been derived to measure latency, consumption, It deduced results latency (high QoS) be ensured reducing by up 93%. allows design addressing trade-off between efficiency.