Transmission Control Protocol with Network Coding (TCP/NC) and its variants were developed to improve the goodput performance of TCP protocol in lossy networks. However, no TCP/NC enhancement work can get a high goodput performance in bi-directional packet loss environments, especially with a high degree and/or burst loss of ACK packets. Therefore, we propose a new scheme called TCP/NC with Bi-directional Loss Tolerance (TCP/NCwBLT) to maintain a goodput in a wide range of bi-directional loss environments by combining three techniques of “ACK accumulation”, “ACK retransmission”, and “Duplicate ACK generator” at the source and/or the sink sides. The simulation results on ns-3 show that TCP/NCwBLT always outperforms the various TCPs and a recent variant of TCP/NC when packet losses happen in both directions, and its advantage significantly increases at a high ACK loss rate.

中文翻译：

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具有双向丢失容限增强的网络编码的 TCP

网络编码传输控制协议 (TCP/NC) 及其变体的开发旨在提高 TCP 协议在有损网络中的吞吐量性能。然而，没有任何 TCP/NC 增强工作可以在双向丢包环境中获得高吞吐量性能，尤其是在 ACK 数据包高度丢失和/或突发丢失的情况下。因此，我们提出了一种称为 TCP/NC with Bi-directional Loss Tolerance (TCP/NCwBLT) 的新方案，通过结合“ACK 累积”、“ACK 重传”三种技术，在广泛的双向丢失环境中保持良好的吞吐量，以及源端和/或接收端的“重复 ACK 生成器”。ns-3 上的仿真结果表明，当双向发生数据包丢失时，TCP/NCwBLT 始终优于各种 TCP 和 TCP/NC 的最新变体，