Authorization for Access in Fog Radio Access Networks

As a novel networking paradigm, Fog radio access networks (F-RANs) have gained great attention due to the advantages such as multiple transmission modes, interference prevention, and edge caching. But security guarantee in F-RANs is a vital problem where illegal users may access to F-RANs without proper authorization. To this end, we design an authorization mechanism using attribute based encryption (ABE) to solve the data security issue of edge caching in F-RANs. Through theoretical analysis, we prove that our proposed mechanism is secure. Extensive simulations are carried out to evaluate the performance of our proposed mechanism by comparing state-of-the-art mechanisms. The results show that our proposed mechanism can solve the authorization problem in F-RANs and performs better in terms of computing consumption.