Toward Increasing User Capacity Through Application of Loopback-Enabled Architecture and an Adaptive Caching Strategy in Mobile Cellular Networks

In this paper, we adopt a loopback-based passive optical network architecture in the mobile cellular network and formulate a data caching problem adapting the loopback-enabled network structure for optimal number of served users in the network. We also propose a heuristic caching algorithm adapting the proposed network structure to increase the number of served users and address the issue of time-inefficiency with obtaining optimal values. The simulation results show that there was less than 5% of difference between numbers of served users obtained using proposed algorithm and optimal values, whilst the calculation time for proposed algorithm was significantly reduced compared to optimizations. Furthermore, the number of served users by using our proposed method can be 15% higher than previous studies.