Literature Database Entry

reisinger2024enabling

Tobias Reisinger, "Enabling Fault Tolerance over Wi-Fi Multi-link Operation (MLO) in OMNeT++," Bachelor Thesis, School of Electrical Engineering and Computer Science (EECS), TU Berlin (TUB), December 2024. (Advisor: Doğanalp Ergenç; Referees: Falko Dressler and Thomas Sikora)

Abstract

Although modern versions of Wi-Fi offer high data rates and low latency, they do not focus on reliability. That would be relevant because wireless networks are highly susceptible to changing connectivity due to interference or other changes in the environment. To enable Wi-Fi usage in critical systems, such as industrial facilities, reliable communication capabilities must be implemented into Wi-Fi. The new multi-link operation (MLO) of Wi-Fi could allow us to send packets over multiple frequencies, which offers new possibilities to improve reliability. For wired networks, the Time-sensitive Networking (TSN) working group already implements multiple protocols to achieve reliability. One of those protocols is Frame Replication and Elimination for Reliability (FRER), which uses redundant packets on multiple links to reduce the need to re-send the packet and thus increasing reliability. Using the FRER protocol in Wi-Fi would enable time-sensitive communication in a wireless network. Since FRER is an existing protocol, it would also allow current FRER infrastructure to be extended with wireless capabilities. To verify that those technologies can work together, I want to create a simulation model, which will allow the evaluation of wireless FRER in various scenarios. The OMNeT++ simulator already includes modules for FRER. By extending an existing implementation of MLO, it is possible to simulate the FRER protocol over Wi-Fi using MLO. That design can then be tested for the desired goals and limitations. The existing FRER modules in OMNeT++ are not fully suited for wireless traffic but provide enough options to create different scenarios. The new model was used to simulate different scenarios and evaluate the effect of FRER on packet latency in Wi-Fi. The results show that the model works and is able to mitigate problems such as broken interfaces and high background noise. However, the increased congestion caused an increase in latency in other traffic in the network. There are still open issues and possibilities to extend the implementation and add more FRER features and allow better integration with existing OMNeT++ scenarios.

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@phdthesis{reisinger2024enabling,
    author = {Reisinger, Tobias},
    title = {{Enabling Fault Tolerance over Wi-Fi Multi-link Operation (MLO) in OMNeT++}},
    advisor = {Ergen{\c{c}}, Doğanalp},
    institution = {School of Electrical Engineering and Computer Science (EECS)},
    location = {Berlin, Germany},
    month = {12},
    referee = {Dressler, Falko and Sikora, Thomas},
    school = {TU Berlin (TUB)},
    type = {Bachelor Thesis},
    year = {2024},
   }
   
   

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Last modified: 2026-04-21