With the widespread use of Internet, the scale of mobile data traffic grows explosively, which makes 5G networks in cellular\nnetworks become a growing concern. Recently, the ideas related to future network, for example, Software Defined Networking\n(SDN), Content-Centric Networking (CCN), and Big Data, have drawn more and more attention. In this paper, we propose a\nservice-customized 5G network architecture by introducing the ideas of separation between control plane and data plane, in network\ncaching, and Big Data processing and analysis to resolve the problems traditional cellular radio networks face. Moreover,\nwe design an optimal routing algorithm for this architecture, which can minimize average response hops in the network. Simulation\nresults reveal that, by introducing the cache, the network performance can be obviously improved in different network conditions\ncompared to the scenario without a cache. In addition, we explore the change of cache hit rate and average response hops under\ndifferent cache replacement policies, cache sizes, content popularity, and network topologies, respectively.
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