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首页> 外文期刊>IEEE communications letters >Linear Network Coding Reduces Buffering in High-Speed Ethernet Parallel Transmission Systems
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Linear Network Coding Reduces Buffering in High-Speed Ethernet Parallel Transmission Systems

机译：线性网络编码减少了高速以太网并行传输系统中的缓冲

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摘要

Parallel transmission is a known technique of transmitting flows over multiple paths from a source towards the same destination. In high-speed Ethernet standards, for instance, large bandwidth flows are inverse-multiplexed into multiple lower-speed flows and transmitted in parallel. However, when flows traverse different paths, attention needs to be paid to the resulting differential delay, which requires computationally expensive path optimizations and large buffering at the receiver. In this paper, we show analytically that linear network coding can significantly reduce the buffering in high-speed Ethernet systems at a price of en/decoding overhead, while relaxing the requirements on path optimality. We implement the proposed decoding buffer model according to the IEEE 802.3ba standard, and show that linear network coding reduces the buffer size up to 40% as compared to systems without coding. With linear network coding, input interfaces of the destination node can deploy relatively smaller buffers, which is critical for wider practical deployment of high-speed Ethernet systems at 100 Gbps and beyond.
机译：并行传输是一种公知的技术，该技术通过多个路径从源向同一目的地传输流。例如，在高速以太网标准中，大带宽流被反向复用为多个低速流并并行传输。但是，当流经过不同的路径时，需要注意产生的差分延迟，这需要计算上昂贵的路径优化和接收器处的大缓冲。在本文中，我们通过分析表明，线性网络编码可以以编码/解码开销为代价，大大减少高速以太网系统中的缓冲，同时放宽对路径优化的要求。我们根据IEEE 802.3ba标准实现了建议的解码缓冲区模型，并表明与不进行编码的系统相比，线性网络编码最多可将缓冲区大小减少40％。通过线性网络编码，目标节点的输入接口可以部署相对较小的缓冲区，这对于更广泛地实际部署100 Gbps及更高速率的高速以太网系统至关重要。

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