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http://dx.doi.org/10.6109/jicce.2020.18.2.100

Request Deduplication Scheme in Cache-Enabled 5G Network Using PON  

Jung, Bokrae (Department of Information and Communication Engineering, Sungkyul University)
Abstract
With the advent of the 5G era, the rapid growth in demand for mobile content services has increased the need for additional backhaul investment. To meet this demand, employing a content delivery network (CDN) and optical access solution near the last mile has become essential for the configuration of 5G networks. In this paper, a cache-enabled architecture using the passive optical network (PON) is presented to serve video on demand (VoD) for users. For efficient use of mobile backhaul, I propose a request deduplication scheme (RDS) that can provide all the requested services missed in cache with minimum bandwidth by eliminating duplicate requests for movies within tolerable range of the quality of service (QoS). The performance of the proposed architecture is compared with and without RDS in terms of the number of requests arriving at the origin server (OS), hit ratio, and improvement ratio according to user requests and cache sizes.
Keywords
Cache; Backhaul; Passive Optical Network; 5G; Request Deduplication;
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