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Tuning transmission opportunity (TXOP) limits for providing bit-based fairness in IEEE 802.11p V2I networks

Published: 03 August 2012 Publication History

Abstract

In this paper, we address an unfairness problem that exists among vehicles of distinct mean velocities in a Vehicle-to-Infrastructure (V2I) network used for drive-thru Internet applications. A vehicle moving with higher velocity has less chance to communicate with the Road Side Unit (RSU), as compared to the slow moving vehicle, due to its shorter residence time in the coverage area of RSU. Accordingly, the data transfer of a higher velocity vehicle gets degraded significantly, as compared to that of the vehicle with lower velocity, resulting in unfairness among them. In this paper, our aim is to resolve this unfairness problem by assigning Transmission Opportunity (TXOP) limits according to vehicle's mean velocity. Using an analytical model, we prove that tuning TXOP limit proportional to mean velocity can ensure fairness among vehicles belonging to distinct classes of mean velocities, in the sense of equal chance of communicating with RSU. Analytical results are validated using extensive simulations.

References

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    ICACCI '12: Proceedings of the International Conference on Advances in Computing, Communications and Informatics
    August 2012
    1307 pages
    ISBN:9781450311960
    DOI:10.1145/2345396
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Published: 03 August 2012

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    Author Tags

    1. IEEE 802.11p
    2. TXOP
    3. fairness
    4. medium access control
    5. resident time of nodes
    6. vehicle-to-infrastructure networks

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