Improve MPTCP Transmission Performance Based on Quality Evaluation Algorithm in High-loss Network Environment

When using a wireless network to transmit data, especially for terminal devices that have a large amount of data to transmit, a single link often cannot meet their own needs. Therefore, compared to single-link devices, devices with multiple network interfaces have the ability to increase their own network throughput. However, wireless networks have high latency and high packet loss rates when moving at high speeds. And because of different operators, the link conditions are also very different. MPTCP has good parallel transmission performance under low latency, but under harsh environments, the performance of MPTCP rapidly decreases due to the influence of bad links. This paper proposes a work flow screening algorithm based on quality evaluation, which can improve the performance of MPTCP in high-loss network environments. The feasibility is verified by simulation.