Multipath QUIC is a transport protocol that allows for the use of multiple network interfaces for a single connection. It thereby offers, on the one hand, the possibility to gather a higher throughput, while, on the other hand, multiple paths can also be used to transmit data redundantly. Selective redundancy combines these two applications and thereby offers the potential to transmit time-critical data. This paper considers scenarios where data with real-time requirements are transmitted redundantly while at the same time, non-critical data should make use of the aggregated throughput. A new model called congestion window reservation is proposed, which enables an immediate transmission of time-critical data. The performance of this method and its combination with selective redundancy is evaluated using emulab with real data. The results show that this technique leads to a smaller end-to-end latency and reliability for periodically generated priority data.

翻译：多路径QUIC是一种传输协议，允许单个连接使用多个网络接口。一方面，它提供了获得更高吞吐量的可能性；另一方面，多条路径也可用于冗余传输数据。选择性冗余结合了这两种应用，从而为传输时间关键型数据提供了潜力。本文考虑了实时数据冗余传输的场景，同时非关键数据应利用聚合的吞吐量。提出了一种名为拥塞窗口预留的新模型，该模型能够实现时间关键型数据的即时传输。通过使用实际数据的Emulab平台，评估了该方法及其与选择性冗余结合的性能。结果表明，该技术对周期性生成的优先级数据能带来更低的端到端延迟和更高的可靠性。