基于饱和TCP流量的Wi-Fi级联吞吐量模型

张俊雄; 刘剑钊; 葛晓虎; 吴伟民

doi:10.11959/j.issn.2096-3750.2023.00356

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基于饱和TCP流量的Wi-Fi级联吞吐量模型

专题：短距无线通信技术 | 更新时间：2024-08-16

- 基于饱和TCP流量的Wi-Fi级联吞吐量模型
- Throughput model of Wi-Fi cascading based on saturated TCP traffic
- 物联网学报 2023年7卷第3期页码：53-61
- 作者机构：
- 作者简介：
  
  [ "张俊雄（1997- ），男，华中科技大学博士生，主要研究方向为无线通信等" ]
  [ "刘剑钊（1999- ），男，华中科技大学硕士生，主要研究方向为无线通信等" ]
  [ "葛晓虎（1972- ），男，博士，华中科技大学教授，主要研究方向为移动通信、无线网络中的流量建模、绿色通信等" ]
  [ "吴伟民（1970- ），男，博士，华中科技大学副教授，主要研究方向为无线通信系统与样机、Wi-Fi 协议创新性、MAC 传输优化等" ]
- 基金信息：
  
  国家自然科学基金资助项目;The National Natural Science Foundation of China(U2001210)
- DOI：10.11959/j.issn.2096-3750.2023.00356
  中图分类号： TN92
- 纸质出版日期：2023-09-30，
  
  网络出版日期：2023-09，
- 稿件说明：
移动端阅览
张俊雄, 刘剑钊, 葛晓虎, 等. 基于饱和TCP流量的Wi-Fi级联吞吐量模型[J]. 物联网学报, 2023,7(3):53-61.

JUNXIONG ZHANG, JIANZHAO LIU, XIAOHU GE, et al. Throughput model of Wi-Fi cascading based on saturated TCP traffic. [J]. Chinese journal on internet of things, 2023, 7(3): 53-61.
张俊雄, 刘剑钊, 葛晓虎, 等. 基于饱和TCP流量的Wi-Fi级联吞吐量模型[J]. 物联网学报, 2023,7(3):53-61. DOI： 10.11959/j.issn.2096-3750.2023.00356.

JUNXIONG ZHANG, JIANZHAO LIU, XIAOHU GE, et al. Throughput model of Wi-Fi cascading based on saturated TCP traffic. [J]. Chinese journal on internet of things, 2023, 7(3): 53-61. DOI： 10.11959/j.issn.2096-3750.2023.00356.

摘要

目前，无线保真（Wi-Fi

wireless fidelity）技术的重要性与商业价值已经获得了广泛认可，同时人们也追求更好的服务质量（QoS

quality of service）。传输控制协议（TCP

transmission control protocol）作为一种面向连接的、提供端到端可靠性服务的通信协议，其重要性也日益上升，是互联网中占主导地位的传输协议。此外，由于单个接入点（AP

access point）的覆盖范围有限，在许多场景下往往需要通过级联来扩展覆盖范围。然而，现有的关于级联场景的研究均基于用户数据报协议（UDP

user datagram protocol），即认为场景中仅存在下行流量，而许多场景中上下行流量往往同时存在，即运行的是TCP流量，在级联场景下用户获得TCP吞吐量应如何计算一直是一个尚待解决的问题。针对该问题，首先在级联场景下建立了饱和TCP流量条件下的Wi-Fi吞吐量模型，该模型通过两个马尔可夫链实现对用户吞吐量的计算；其次，搭建了级联系统进行实测，通过对比理论仿真结果与实际测试结果，对模型的有效性进行了验证。

Abstract

At present

the importance and commercial value of wireless fidelity (Wi-Fi) technology have been widely recognized.And people are also pursuing better quality of service (QoS).Transmission control protocol (TCP) as a connection-oriented communication protocol that provides end-to-end reliability services

its importance is also increasing

and it is the dominant transmission protocol in the Internet.Besides

since the coverage of a single access point (AP) is limited

it is often necessary to extend the coverage through cascading in many scenarios.However

the current research on cascading scenarios is based on the user datagram protocol (UDP)

which means that only downlink traffic exists in the scenario.Actually

uplink and downlink traffic often exist at the same time in many scenarios

which means TCP traffic is running.How to calculate the TCP throughput obtained by users in the cascading scenario has always been an unresolved problem.To solve this problem

firstly

a Wi-Fi throughput model under the condition of saturated TCP traffic was established in the cascading scenario

and the calculation of user throughput was realized through two Markov chains.Secondly

a cascading system was built and actual tests were conducted.The validity of the model is verified by comparing the theoretical simulation results with the actual test results.

关键词

Wi-FiQoSTCP吞吐量

Keywords

Wi-FiQoSTCPthroughput

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