Literature Database Entry

simohartono2025towards

Johanes Albert Simohartono, "Towards Ultra-Reliable Wi-Fi: Adaptive Redundancy for Mixed-Criticality Traffic via Wi-Fi 7 Multi-link Operation (MLO)," Master's Thesis, School of Electrical Engineering and Computer Science (EECS), TU Berlin (TUB), August 2025. (Advisor: Doğanalp Ergenç; Referees: Falko Dressler and Thomas Sikora)

Abstract

The increasing demand for low-latency and high-reliability wireless communication motivates the exploration of Multi-Link Operation (MLO) in IEEE 802.11be / Wi-Fi 7. MLO enables devices to transmit data simultaneously over multiple links using frequency diversity. One application of MLO is redundant transmission, where the same packet is sent across multiple links to improve reliability. However, applying redundancy to all traffic can create unnecessary congestion and waste channel resources. This work addresses the problem of determining when and for which traffic classes redundant transmission should be enabled. To identify these conditions, we conducted an extensive analysis of MLO performance under varying traffic priorities and channel condition. Based on the insights from this analysis, we propose an adaptive redundancy heuristic that enables redundancy based on current link performance. It uses metrics such as end-to-end delay, throughput, and link utilization. The heuristic selectively applies redundancy to high-priority traffic when beneficial. It was implemented and evaluated using the OMNeT++/INET simulation framework under varying interference and shadowing conditions. The results show that selective redundancy improves latency for high-priority traffic and maintains goodput for low-priority traffic, especially when the redundant link has a lower utilization than the primary link. Moreover, when link quality degrades, restricting redundancy to only high-priority packets effectively maintains critical traffic performance while minimizing additional congestion. These findings highlight the importance of adaptive MLO strategies to balance performance gains with resource efficiency in next-generation Wi-Fi networks.

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Johanes Albert Simohartono

BibTeX reference

@phdthesis{simohartono2025towards,
    author = {Simohartono, Johanes Albert},
    title = {{Towards Ultra-Reliable Wi-Fi: Adaptive Redundancy for Mixed-Criticality Traffic via Wi-Fi 7 Multi-link Operation (MLO)}},
    advisor = {Ergen{\c{c}}, Do{\u{g}}analp},
    institution = {School of Electrical Engineering and Computer Science (EECS)},
    location = {Berlin, Germany},
    month = {8},
    referee = {Dressler, Falko and Sikora, Thomas},
    school = {TU Berlin (TUB)},
    type = {Master's Thesis},
    year = {2025},
   }
   
   

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Last modified: 2026-04-20