Improved Lagrange relaxation multi-constraint routing algorithm

Pingzhang Gou; Lin Ma

doi:10.1117/12.2652225

10 November 2022 Improved Lagrange relaxation multi-constraint routing algorithm

Pingzhang Gou, Lin Ma

Proceedings Volume 12331, International Conference on Mechanisms and Robotics (ICMAR 2022); 123314P (2022) https://doi.org/10.1117/12.2652225
Event: International Conference on Mechanisms and Robotics (ICMAR 2022), 2022, Zhuhai, China

Abstract

With the explosion of Internet devices and the increase in quality of service (QoS) requirements, the flat architecture of the traditional network cannot take a global view of the network, and the lack of dynamic adaptability is difficult to guarantee the QoS requirements of existing network applications. To solve this problem, an improved Lagrange relaxation multi-constraint routing algorithm SDN-LQ is proposed based on the software defined network (SDN) architecture by analyzing the three main factors that affect network performance, bandwidth, delay and packet loss rate. Firstly, the useless bandwidth is pruned according to the bandwidth constraint. Then the delay and packet loss rate are aggregated into the cost function, and to solve the optimal path by the shortest path algorithm with the cost function as the weight. Finally, the network is monitored in real time and the optimal path is dynamically updated to ensure the QoS of real time services. The simulation experiment results show that SDN-LQ has a lower packet loss rate compared with other algorithms, and can improve link throughput while improving link utilization.

Citation Download Citation

Pingzhang Gou and Lin Ma "Improved Lagrange relaxation multi-constraint routing algorithm", Proc. SPIE 12331, International Conference on Mechanisms and Robotics (ICMAR 2022), 123314P (10 November 2022); https://doi.org/10.1117/12.2652225

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