University of Oulu

G. P. Wijesiri N. B. A, J. Haapola and T. Samarasinghe, "The Effect of Concurrent Multi-Priority Data Streams on the MAC Layer Performance of IEEE 802.11p and C-V2X Mode 4," in IEEE Transactions on Communications, vol. 70, no. 1, pp. 592-605, Jan. 2022, doi: 10.1109/TCOMM.2021.3119703

The effect of concurrent multi-priority data streams on the MAC layer performance of IEEE 802.11p and C-V2X Mode 4

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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 Electronic and Electrical Engineering, University of Melbourne, Australia
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 4.2 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2022
Publish Date: 2021-10-22


Supporting parallel multi-priority data streams is vital for maintaining the quality of service (QoS) in vehicle-to-everything (V2X) communication. Hence, the European telecommunications standard institute (ETSI) has defined four packet types, with varying priority levels, to be used as broadcast packets in such communication. This paper studies the medium access control (MAC) layer performance of IEEE 802.11p and cellular-V2X (C-V2X) Mode 4 using discrete-time Markov chain (DTMC) based models, while considering parallel multi-priority data streams. The overall model consists of four queue models with their respective traffic generators, which are appropriately linked with the DTMCs modeling the MAC layer operations of IEEE 802.11p and C-V2X Mode 4. 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. Numerical results are provided to draw insights on the MAC layer performance of the two technologies. IEEE 802.11p is comparatively superior in average delay, and at maintaining fairness among multi-priority data streams, whereas C-V2X Mode 4 exhibits better collision resolution, which leads to its higher throughput. The paper also includes design insights on possible performance enhancements for future releases.

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Series: IEEE transactions on communications
ISSN: 0090-6778
ISSN-E: 1558-0857
ISSN-L: 0090-6778
Volume: 70
Issue: 1
Pages: 592 - 605
DOI: 10.1109/TCOMM.2021.3119703
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This research has partially received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 857031 (project 5G!Drones), the Academy of Finland 6Genesis Flagship (grant 318927) and the AHEAD/RA3/RIC/MRT/ITS-Multidisciplinary Transport Development Project of the University of Moratuwa under World Bank grant 6026-LK/8743-LK.
EU Grant Number: (857031) 5G!Drones - Unmanned Aerial Vehicle Vertical Applications’ Trials Leveraging Advanced 5G Facilities
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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