Abstract

Mobile caching has become a practical mechanism for reducing latency, improving user experience, and lowering repeated backhaul transmissions in content-centric wireless systems. This study organizes mobile caching around three core questions: how to cache, what to cache, and where to cache. It evaluates replacement and admission ideas, compares edge placement options in the evolved packet core, radio access network, small base stations, and device-to-device links, and presents a simulation-based analysis of cache size, request load, popularity skew, and prediction accuracy. The results indicate that user-preference-aware and edge-oriented strategies provide higher hit ratio, lower latency, and stronger backhaul relief than conventional non-cooperative approaches. However, these gains depend on accurate popularity estimation, cache coordination, and the overhead of maintaining edge intelligence.

Authors

Sahib Bahadar, Nabi Rehmat
Nanjing University of Information Science and Technology, China

Keywords

Mobile Caching, Edge Caching, RAN Caching, Cache Replacement, 5G