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http://dx.doi.org/10.22156/CS4SMB.2020.10.01.022

Performance Evaluation of Caching in PON-based 5G Fronthaul  

Jung, Bokrae (Department of Information Communication Engineering)
Publication Information
Journal of Convergence for Information Technology / v.10, no.1, 2020 , pp. 22-27 More about this Journal
Abstract
With the deployment of 5G infrastructure, content delivery network (CDN) will be a key role to provide explosive growing services for the independent media and YouTube which contain high-speed mobile contents. Without a local cache, the mobile backhaul and fronthaul should endure huge burden of bandwidth request for users as the increase number of direct accesses from contents providers. To deal with this issue, this paper fist presents both fronthaul solutions for CDN that use dark fibers and a passive optical network (PON). On top of that, we propose the aggregated content request specialized for PON caching and evaluate and compare its performance to legacy schemes through the simulation. The proposed PON caching scheme can reduce average access time of up to 0.5 seconds, 1/n received request packets, and save 60% of backhaul bandwidth compared to the no caching scheme. This work can be a useful reference for service providers and will be extended to further improve the hit ratio of cache in the future.
Keywords
Caching; Content Delivery Network; Backhaul; Fronthaul; Passive Optical Network; 5G;
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Times Cited By KSCI : 10  (Citation Analysis)
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