Abstract
In Wi-Fi networks, preliminary channel reservation protects transmissions in reserved time intervals from collisions with neighboring stations. However, making changes in established reservations takes long time spent on negotiating changes with neighboring stations and dissemination of information about these changes. This complicates serving of Variable Bit Rate (VBR) flows which intensity varies with time, what leaves no choice but to reserve some additional time for handling data bursts and packet retransmissions (caused by random noise and interference from remote stations). In the paper, we consider a more flexible approach when bursts and retransmissions are handled by some random access method while a constant part of an input flow is served in preliminarily reserved intervals. We build a mathematical model of a VBR flow transmission process with this heterogeneous access method and use the model to find transmission parameters which guarantee that Quality of Service requirements of the flow are satisfied at the minimal amount of used channel time.
The research was done in IITP RAS and supported by the Russian Science Foundation (agreement No 16-19-10687).
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References
RFC 3550. http://www.ietf.org/rfc/rfc3550.txt
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Ivanov, A., Khorov, E., Lyakhov, A., Solomatin, I. (2016). Mathematical Model of QoS-Aware Streaming with Heterogeneous Channel Access in Wi-Fi Networks. In: Galinina, O., Balandin, S., Koucheryavy, Y. (eds) Internet of Things, Smart Spaces, and Next Generation Networks and Systems. ruSMART NEW2AN 2016 2016. Lecture Notes in Computer Science(), vol 9870. Springer, Cham. https://doi.org/10.1007/978-3-319-46301-8_16
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DOI: https://doi.org/10.1007/978-3-319-46301-8_16
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