Behaviour of Common TCP Variants over LTE
Behaviour of Common TCP Variants over LTE
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DOI：
10.1109/glocom.2016.7841626
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发表时间：
2016-12
期刊：
影响因子：
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通讯作者：
Remi Robert;E. Atxutegi;Å. Arvidsson;F. Liberal;A. Brunström;Karl-Johan Grinnemo
中科院分区：
文献类型：
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作者：
Remi Robert;E. Atxutegi;Å. Arvidsson;F. Liberal;A. Brunström;Karl-Johan Grinnemo
本文旨在加深我们对 LTE 网络中一些主要 TCP 变体行为的理解。对七种 TCP 变体的行为进行了模拟研究。研究了具有不同网络负载和流类型的四种场景的吞吐量、拥塞窗口和排队延迟的演变。我们的测量表明，在平均无线电条件下，大多数变体都能快速达到完全链路利用率。然而，为了实现相同的吞吐量，它们会产生不同量的排队延迟。一方面，基于丢失的算法往往会完全填满队列，造成巨大的排队延迟并导致数据包丢失。另一方面，基于延迟的变体设法限制队列大小并减少 eNodeB 丢弃的数据包数量，但在某些情况下难以达到最大吞吐量。
This paper aims at increasing our understanding of the behaviour of some of the major TCP variants in LTE networks. A simulation study on the behaviour of seven TCP variants is performed. The evolution of the throughput, congestion window and queuing delay are studied for four scenarios with different network loads and flow types. Our measurements show that, in average radio conditions, most variants are able to quickly reach full link utilisation. However, to achieve the same throughput, they create different amounts of queuing delay. On the one hand, loss-based algorithms tend to completely fill the queue, creating huge queuing delays and inducing packet losses. On the other hand, delay-based variants manage to limit the queue size and decrease the amount of packets dropped by the eNodeB, but struggle to reach the maximum throughput in some circumstances.