Journal of Applied Sciences ›› 2024, Vol. 42 ›› Issue (3): 499-512.doi: 10.3969/j.issn.0255-8297.2024.03.011

• Computer Science and Applications • Previous Articles     Next Articles

A Multi-objective Flow QoS Scheduling Strategy with Improved Proximal Optimization

LIU Xingtong, ZHENG Hong, HUANG Jianhua   

  1. Department of Computer Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
  • Received:2023-03-07 Published:2024-06-06

Abstract: Software-defined networking (SDN) can be equipped with flexible flow scheduling strategies to improve the quality of network service systems. However, as the complexity of business traffic increases, existing flow scheduling algorithms may suffer from performance degradation due to decreased scene matching. To address this problem, this paper proposes an intelligent routing strategy based on deep reinforcement learning. The strategy collects various link information through SDN, and implements feature extraction and state awareness based on long-short term memory networks and proximal policy optimization algorithms. The strategy generates dynamic flow scheduling strategies that meet quality of service (QoS) goals in business scenarios, thereby maximizing QoS. Experimental results show that the proposed scheme enhances the QoS index of the entire system by 7.06% compared to existing routing strategies, effectively improving the throughput of the business system.

Key words: deep reinforcement learning, quality of service, routing optimization, software defined network, online scheduling

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