Mobile Computing SystemEngineeringMachine LearningDeep Reinforcement LearningEdge ComputingCloud ComputingMulti-access Edge ComputingCachingEdge ArchitectureMobile Edge CachingMobile ComputingReinforcement Learning (Educational Psychology)Computer ScienceMobile EdgeDeep LearningNetwork TrafficNew FeaturesWeb Cache
Mobile edge caching is a promising technique to reduce network traffic and improve the quality of experience of mobile users. However, mobile edge caching is a challenging decision making problem with unknown future content popularity and complex network characteristics. In this article, we advocate the use of DRL to solve mobile edge caching problems by presenting an overview of recent works on mobile edge caching and DRL. We first examine the key issues in mobile edge caching and review the existing learning- based solutions proposed in the literature. We also discuss the unique features in the application of DRL in mobile edge caching, and illustrate an example of DRL-based mobile edge caching with trace-data-driven simulation results. This article concludes with a discussion of several open issues that call for substantial future research efforts.
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