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http://dx.doi.org/10.6109/jkiice.2021.25.1.50

Path selection algorithm for multi-path system based on deep Q learning  

Chung, Byung Chang (Electronics and Telecommunications Research Institute)
Park, Heasook (Electronics and Telecommunications Research Institute)
Abstract
Multi-path system is a system in which utilizes various networks simultaneously. It is expected that multi-path system can enhance communication speed, reliability, security of network. In this paper, we focus on path selection in multi-path system. To select optimal path, we propose deep reinforcement learning algorithm which is rewarded by the round-trip-time (RTT) of each networks. Unlike multi-armed bandit model, deep Q learning is applied to consider rapidly changing situations. Due to the delay of RTT data, we also suggest compensation algorithm of the delayed reward. Moreover, we implement testbed learning server to evaluate the performance of proposed algorithm. The learning server contains distributed database and tensorflow module to efficiently operate deep learning algorithm. By means of simulation, we showed that the proposed algorithm has better performance than lowest RTT about 20%.
Keywords
Reinforcement learning; Delay compensation; Multi-path system; Multi-path TCP; Path selection;
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