Fair video caching for named data networking

Named Data Networking (NDN), a revolution of the IP architecture, provides an information-centric paradigm to transmit video traffic which occupies most of the Internet traffic. However, the data caching schemes exploited by the current NDN can easily result in the unfair distribution of cache space, which is not suitable for performance isolation when there are multiple network users and the cache space is of high utilization for video applications. In this paper, we propose a max-min utility fairness scheme for the built-in cache allocation of video applications. We propose a computing method which calculates the benefit of all video data cached in the NDN node. Based on the benefit of individual user and the relevance of video data, NDN node evicts the video data which belongs to users with the most benefits. Extensive simulation experiments have been performed to evaluate our scheme in terms of user fairness, average delay and hit ratio. The results show that our scheme can guarantee the fairness for different video Users, meanwhile, reducing the packet round trip times by improving the cache hit ratio.