Will TCP Work in mmWave 5G Cellular Networks?
Will TCP Work in mmWave 5G Cellular Networks?
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DOI：
10.1109/mcom.2018.1701370
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发表时间：
2018-06
影响因子：
11.2
通讯作者：
Menglei Zhang;Michele Polese;M. Mezzavilla;Jing Zhu;S. Rangan;S. Panwar;M. Zorzi
中科院分区：
文献类型：
--
作者：
Menglei Zhang;Michele Polese;M. Mezzavilla;Jing Zhu;S. Rangan;S. Panwar;M. Zorzi
毫米波（mmWave）频带中的大量可用频谱为第五代蜂窝网络提供了每秒数千兆比特的数据速率的可能性。然而，由于毫米波信号在定向搜索中易受阻塞和延迟的影响，毫米波容量可能是高度间歇性的。这种高度可变的链路对传输层协议和端到端应用中的自适应控制机制提出了独特的挑战。本文认为，最广泛使用的传输协议，TCP是否将在毫米波蜂窝系统的基本问题。本文提供了一个全面的TCP仿真研究，考虑到各种因素，如拥塞控制算法，包括最近提出的TCP BBR，边缘与远程服务器，切换和多连接，TCP数据包大小，和3GPPstack参数。我们发现，毫米波链路上的TCP的性能是高度依赖于这些参数的不同组合，并确定在这方面的开放的挑战。
The vast available spectrum in the millimeter- wave (mmWave) bands offers the possibility of multi-gigabit-per-second data rates for fifth generation cellular networks. However, mmWave capacity can be highly intermittent due to the vulnerability of mmWave signals to blockages and delays in directional searching. Such highly variable links present unique challenges for adaptive control mechanisms in transport layer protocols and end-to-end applications. This article considers the fundamental question of whether TCP, the most widely used transport protocol, will work in mmWave cellular systems. The article provides a comprehensive simulation study of TCP considering various factors such as the congestion control algorithm, including the recently proposed TCP BBR, edge vs. remote servers, handover and multi-connectivity, TCP packet size, and 3GPPstack parameters. We show that the performance of TCP on mmWave links is highly dependent on different combinations of these parameters, and identify the open challenges in this area.