University of Oulu

G. P. Wijesiri, J. Haapola and T. Samarasinghe, "The Effect of Multiple Access Categories on the MAC Layer Performance of IEEE 802.11p," GLOBECOM 2020 - 2020 IEEE Global Communications Conference, Taipei, Taiwan, 2020, pp. 1-6, doi: 10.1109/GLOBECOM42002.2020.9348088

The effect of multiple access categories on the MAC layer performance of IEEE 802.11p

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Author: Wijesiri, Geeth P.1,2; Haapola, Jussi3; Samarasinghe, Tharaka1,4
Organizations: 1Department of Electronic and Telecommunication Engineering, University of Moratuwa, Sri Lanka
2Department of Electrical and Information Engineering, University of Ruhuna, Sri Lanka
3Center for Wireless Communications, University of Oulu, Finland
4Department of Electrical and Electronic Engineering, University of Melbourne, Australia
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.4 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2020
Publish Date: 2021-02-17


The enhanced distributed channel access (EDCA) mechanism enables IEEE 802.11p to accommodate differential quality of service (QoS) levels in vehicle-to-vehicle (V2V) communications, through four access categories (ACs). This paper presents multi-dimensional discrete-time Markov chain (DTMC) based model to study the effect of parallel operation of the ACs on the medium access control (MAC) layer performance of ITS-G5 IEEE 802.11p. The overall model consists of four queue models with their respective traffic generators, which are appropriately linked with the DTMCs modeling the operation of each AC. Closed-form solutions for the steady-state probabilities of the models are obtained, which are then utilized to derive expressions for key performance indicators at the MAC layer. An application for a highway scenario is presented to draw insights on the performance. The results show how the performance measures vary among ACs according to their priority levels, and emphasize the importance of analytical modeling of the parallel operation of all four ACs.

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Series: IEEE Global Communications Conference
ISSN: 2334-0983
ISSN-E: 2576-6813
ISSN-L: 2334-0983
ISBN: 978-1-7281-8298-8
ISBN Print: 978-1-7281-8299-5
Article number: 9348088
DOI: 10.1109/GLOBECOM42002.2020.9348088
Host publication: GLOBECOM 2020 - 2020 IEEE Global Communications Conference
Conference: IEEE Global Communications Conference
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This research has been partially financially supported by the Senate Research Council, University of Moratuwa, Sri lanka, ITEA3 project APPSTACLE (15017), and Academy of Finland 6Genesis Flagship (grant 318927).
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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