Hit Ratio and Content Quality Tradeoff for Adaptive Bitrate Streaming in Edge Caching Systems

Dao, Nhu Ngoc; Ngo, Duy Trong; Dinh, Ngoc-Thanh; Phan, Trung V.; Vo, Nam D.; Cho, Sungrae; Braun, Torsten (2021). Hit Ratio and Content Quality Tradeoff for Adaptive Bitrate Streaming in Edge Caching Systems. IEEE Systems Journal, 15(4), pp. 5094-5097. IEEE 10.1109/JSYST.2020.3019035

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This paper addresses the tradeoff problem between hit ratio and content quality in edge caching systems for multiuser adaptive bitrate streaming (ABS) services. A dynamic policy for cache decision and quality level selection for each ABS content during every cache cycle is proposed. Achieving this policy is NP-complete. For this, the considered problem is transformed into a nested multidimensional 0/1 knapsack optimization problem which is then resolved by a cooperative transfer learning-accelerated genetic algorithm. Performance evaluation demonstrates an adaptation of the proposed algorithm on various video stream popularity models in terms of algorithmic convergence and cache balancing.

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