Real traffic replay over WLAN with environment emulation

Chia Yu Ku*, Ying-Dar Lin, Yuan Cheng Lai, Pei Hsuan Li, Ching-Ju Lin

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

Real traffic replay is one of the solutions used to test network devices over complicated scenarios. Packet traces captured in a real environment hold more details than any mathematical models. However, the lack of packet-replay control and environment emulation might highly affect traffic behaviors, especially in wireless networks. Real traffic replay in wireless networks requires packet-replay control to manage the interactions with the device under test (DUT), and coordinately reproduces environment effects, such as fading, noise, and interference. In this work, we propose a method, called Event-driven Automata-synchronized Replay (EAR), to address real traffic replay over WLAN. EAR transforms the captured packet trace into a sequence of events that follow the IEEE 802.11 protocol. The three-level automata are applied to achieve packet-replay control and synchronize the environment effects in traffic replay with the packets and signals captured in a real environment. We propose a quantitative metric, called the event reproduction ratio (ERR), to evaluate the effectiveness of traffic replay. Our software implementation on the Linux-based system demonstrates that EAR achieves the ERR of 95.9% and 92.45% over the DUT-dependent traffic and fading environments, respectively. Under the same condition, the straight-forward replay can only produce the ERR of 20.6% and 0%, respectively.

Original languageEnglish
Title of host publication2012 IEEE Wireless Communications and Networking Conference, WCNC 2012
Pages2406-2411
Number of pages6
DOIs
StatePublished - 1 Aug 2012
Event2012 IEEE Wireless Communications and Networking Conference, WCNC 2012 - Paris, France
Duration: 1 Apr 20124 Apr 2012

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)1525-3511

Conference

Conference2012 IEEE Wireless Communications and Networking Conference, WCNC 2012
CountryFrance
CityParis
Period1/04/124/04/12

Keywords

  • WLAN
  • environment emulation
  • real traffic
  • traffic replay
  • wireless network

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  • Cite this

    Ku, C. Y., Lin, Y-D., Lai, Y. C., Li, P. H., & Lin, C-J. (2012). Real traffic replay over WLAN with environment emulation. In 2012 IEEE Wireless Communications and Networking Conference, WCNC 2012 (pp. 2406-2411). [6214199] (IEEE Wireless Communications and Networking Conference, WCNC). https://doi.org/10.1109/WCNC.2012.6214199