Improving video content access with proactive D2D caching and online social networking
Fausto da Silva Moraes, Kléber V. Cardoso, Vinicius C. M. Borges · 2017
Video data transmission has increased notably in the last years and the projections indicate they will pose a huge demand over the mobile wireless networks. This has been one of the motivations to improve the infrastructure with new technologies, but also to use efficiently the available resources, avoiding unnecessary increasing in CAPEX/OPEX. Distributed caching is a promising approach, since it employs the existing network resources in an opportunistic way to offload the bottlenecks in the content distribution of the mobile networks. The viral videos increase the probability of this content being shared between the Online Social Networks (OSNs). While solutions have already been proposed to exploit this information, the current state-of-the-art still fails to take into account online social interactions for distributed video caching. This work presents a novel approach, called Probabilistic Social Cascade for D2D communication (ProSoCaD), for distributed caching that employs knowledge from OSNs. We have carried out an in-depth simulation study in ns-3 to assess the performance of ProSoCaD. ProSoCaD improves the offload rate, lowers energy consumption, and reduces the delay in obtaining access to the video content.