Literature Database Entry

zou2025channel

Rui Zou, "Channel Access Prioritization with 802.11e for Interflow Network Coding in WiFi," Bachelor Thesis, School of Electrical Engineering and Computer Science (EECS), TU Berlin (TUB), September 2025. (Advisor: Sascha Rösler; Referees: Falko Dressler and Thomas Sikora)

Abstract

Interflow Network Coding (NC) is a common method while using WIFI for packets exchanging between nodes. It optimizes the network performance mostly by reducing time slots for transmission by combing multiple packets into one encoded packet and sending the combined packets to the destinations instead of sending the original packets one-by-one in the wireless medium. However, NC is not flawless and it has its disadvantages as well. More specifically in a system, in which multiple packets can not arrive at the intermediate node at the same time, the packets, which have arrived at the intermediate node earlier, must wait and be buffered inside intermediate node. If the waiting period is long, NC's advantages could be significantly weakened. In this case, the multi-queue system introduced by Quality of Service (QoS) can be of use, in which different queues having different priority levels for accessing the wireless channel, while letting the encoded packets be in the higher priority queue, the normal packets are being buffered in default queue, waiting for potentially combination for later arrival of other packets. The results prove that the NC can raise the end-to-end latency, it is more obvious while having more numbers of STAs. Therefore after integrating QoS with NC, it proves that the end-to-end latency raised by NC can be significantly reduced, restoring the advantage of NC again. This thesis comes to the conclusion that, the more STAs a system has, the more packets a intermediate node has to combine, the higher the end-to-end latency the NC can raise, which makes the QoS in more STAs scenario more helpful and necessary. By integrating NC and QoS, both the throughput at receivers and end-to-end latency can be optimized.

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Rui Zou

BibTeX reference

@phdthesis{zou2025channel,
    author = {Zou, Rui},
    title = {{Channel Access Prioritization with 802.11e for Interflow Network Coding in WiFi}},
    advisor = {R{\"{o}}sler, Sascha},
    institution = {School of Electrical Engineering and Computer Science (EECS)},
    location = {Berlin, Germany},
    month = {9},
    referee = {Dressler, Falko and Sikora, Thomas},
    school = {TU Berlin (TUB)},
    type = {Bachelor Thesis},
    year = {2025},
   }
   
   

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Last modified: 2026-05-02