Abstract
The increasing demand for video streaming has imposed tremendous data rates and minimal end-to-end latency requirements on 5G mobile networks. Caching content close to the users is one of the conventional ways to meet these requirements. Subsequent requests for the same content can be supplied from the cache with minimal delay. In this paper, we present a content placement problem in a hierarchical collaborative caching (CPP-HCC) in 5G networks that can determine the location of the replica contents by solving an optimization problem. This optimization problem minimizes the latency for transferring content between entities of the network. The evaluation results confirm the efficiency of CPP-HCC compared to other benchmark methods and show that the latency and hit ratio can be improved by 83% and 62%, respectively.
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