Multipath TCP in Smartphones Equipped with Millimeter Wave Radios

Imran Khan, Moinak Ghoshal, Shivang Aggarwal, Dimitrios Koutsonikolas, Joerg Widmer
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引用次数: 5

Abstract

The well-known susceptibility of millimeter wave links to human blockage and client mobility has recently motivated researchers to propose approaches that leverage both 802.11ad radios (operating in the 60 GHz band) and legacy 802.11ac radios (operating in the 5 GHz band) in dual-band commercial off-the-shelf devices to simultaneously provide Gbps throughput and reliability. One such approach is via Multipath TCP (MPTCP), a transport layer protocol that is transparent to applications and requires no changes to the underlying wireless drivers. However, MPTCP (as well as other bundling approaches) have only been evaluated to date in 60 GHz WLANs with laptop clients. In this work, we port for first time the MPTCP source code to a dual-band smartphone equipped with an 802.11ad and an 802.11ac radio. We discuss the challenges we face and the system-level optimizations required to enable the phone to support Gbps data rates and yield optimal MPTCP throughput (i.e., the sum of the individual throughputs of the two radios) under ideal conditions. We also evaluate for first time the power consumption of MPTCP in a dual-band 802.11ad/ac smartphone and provide recommendations towards the design of an energy-aware MPTCP scheduler. We make our source code publicly available to enable other researchers to experiment with MPTCP in smartphones equipped with millimeter wave radios.
配备毫米波无线电的智能手机中的多路径TCP
众所周知,毫米波链路对人为阻塞和客户端移动性的敏感性最近促使研究人员提出了在双频商用现成设备中利用802.11ad无线电(工作在60ghz频段)和传统802.11ac无线电(工作在5ghz频段)的方法,以同时提供Gbps吞吐量和可靠性。其中一种方法是通过多路径TCP (MPTCP),这是一种传输层协议,对应用程序是透明的,不需要更改底层无线驱动程序。然而,到目前为止,MPTCP(以及其他捆绑方法)仅在带有笔记本电脑客户端的60ghz wlan中进行了评估。在这项工作中,我们首次将MPTCP源代码移植到配备802.11ad和802.11ac无线电的双频智能手机上。我们讨论了我们所面临的挑战以及在理想条件下使手机能够支持Gbps数据速率并产生最佳MPTCP吞吐量(即两个无线电的单个吞吐量的总和)所需的系统级优化。我们还首次评估了双频802.11ad/ac智能手机中MPTCP的功耗,并为节能MPTCP调度器的设计提供了建议。我们将源代码公开,以便其他研究人员可以在配备毫米波无线电的智能手机上实验MPTCP。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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