Vehicular Ad Hoc Networks (VANETs) are critical for the advancement of Intelligent Transportation Systems (ITS), enabling real-time vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications. However, ensuring Quality of Service (QoS) in VANETs is challenging due to high mobility, dynamic topologies, and interference. This study evaluates the performance of Medium Access Control (MAC) protocols implemented on a Software-Defined Radio (SDR) platform to address these challenges. The research highlights the use of QoS-prescribed scheduling algorithms and multi-user detection techniques to optimize key performance metrics such as packet delivery ratio (PDR), throughput, and scalability. Simulation results demonstrate significant improvements under varying mobility and channel conditions, achieving stable communication and high user capacity in both fixed and high-mobility scenarios. The findings underscore the potential of SDR-based VANET solutions for enhancing reliability, scalability, and efficiency in dynamic vehicular environments. Future directions include incorporating iterative methods and real-world testing to further refine QoS delivery in VANETs.
References
[1]
Zeadally, S., Hunt, R., Chen, Y., Irwin, A. and Hassan, A. (2010) Vehicular Ad Hoc Networks (VANETS): Status, Results, and Challenges. Telecommunication Systems, 50, 217-241. https://doi.org/10.1007/s11235-010-9400-5
[2]
Hui, A.L.C. and Letaief, K.B. (1998) Successive Interference Cancellation for Multiuser Asynchronous DS/CDMA Detectors in Multipath Fading Links. IEEE Transactions on Communications, 46, 384-391. https://doi.org/10.1109/26.662644
[3]
Hamad, S. (2021) Vehicular Ad-Hoc Networks: Architecture, Applications and Challenges.
[4]
Chamola, V., Kotesh, P., Agarwal, A., Naren Gupta, N. and Guizani, M. (2021) A Comprehensive Review of Unmanned Aerial Vehicle Attacks and Neutralization Techniques. Ad Hoc Networks, 111, Article 102324. https://doi.org/10.1016/j.adhoc.2020.102324
[5]
Dudhe, A.S. and Amdani, S.Y. (2018) Improvement in Quality of Service (QoS) within VANETs: A Survey. IOSR Journal of Engineering, 11, 67-71.
[6]
Sampath, A., Sarath Kumar, P. and Holtzman, J.M. (1995) Power Control and Resource Management for a Multimedia CDMA Wireless System. Proceedings of 6thInternational Symposium on Personal, Indoor and Mobile Radio Communications, Toronto, 27-29 September 1995, 21-25. https://doi.org/10.1109/pimrc.1995.476272
[7]
Aguiar, A., Holger, K., Wolisz, H. and Miesmer, H. (2003) A Framework for Evaluating Effects of Channel Prediction Inaccuracy on the Performance of Channel Adaptive Techniques.
[8]
Verdu, S. (1998) Multiuser Detection. Cambridge University Press.
[9]
Latva-Aho, M. (1998) Bit Error Probability Analysis for FRAMES WCDMA Downlink Receivers. IEEE Transactions on Vehicular Technology, 47, 1119-1133. https://doi.org/10.1109/25.728482
[10]
Evans, J. and Tse, D.N.C. (2000) Large System Performance of Linear Multiuser Receivers in Multipath Fading Channels. IEEE Transactions on Information Theory, 46, 2059-2078. https://doi.org/10.1109/18.868478
[11]
Zhang, J.H., Dziong, Z., Gagnon, F. and Kadoch, M. (2009) Multiuser Detection Based MAC Design for Ad Hoc Networks. IEEE Transactions on Wireless Communications, 8, 1836-1846. https://doi.org/10.1109/t-wc.2008.071449
[12]
David, N., Tse, C. and Hanly, S.V. (1999) Linear Multiuser Receivers: Effective Interference, Effective Bandwidth and User Capacity. IEEE Transactions on Information Theory, 2, 641-657.
[13]
Tony, O. and Arne, S. (1998) On Schemes for Multirate Support in DS/CDMA Systems. Technical Report. Technical Report No. 14.
[14]
Wang, Y. (2011) TDMA-Based MAC Protocols for Vehicular Ad Hoc Networks. IEEE Communications Surveys & Tutorials, 4, 560-578.
[15]
Shen, Z., Zhang, X., Zhang, M., Li, W. and Yang, D. (2017) Self-Sorting-Based MAC Protocol for High-Density Vehicular Ad Hoc Networks. IEEE Access, 5, 7350-7361. https://doi.org/10.1109/access.2017.2692254
[16]
Jayaraj, V., Hemanth, C. and Sangeetha, R.G. (2016) A Survey on Hybrid MAC Protocols for Vehicular Ad-Hoc Networks. Vehicular Communications, 6, 29-36. https://doi.org/10.1016/j.vehcom.2016.09.003
[17]
IEEE (1997) IEEE Standard for Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications.
[18]
Blaszczyszyn, B., Muhlethaler, P. and Toor, Y. (2009) Performance of MAC Protocols in Linear Vanets under Different Attenuation and Fading Conditions. 2009 12th International IEEE Conference on Intelligent Transportation Systems, St. Louis, 4-7 October 2009, 1-6. https://doi.org/10.1109/itsc.2009.5309672
[19]
Cao, S. and Lee, V.C.S. (2016) Improving Throughput of Multichannel MAC Protocol for Vanets. 2016 IEEE International Conference on Vehicular Electronics and Safety (ICVES), Beijing, 10-12 July 2016, 1-6. https://doi.org/10.1109/icves.2016.7548163
[20]
Almalag, M.S., Weigle, M.C. and Olariu, S. (2013) MAC Protocols for VANETs. In: Mobile Ad Hoc Networking: Cutting Edge Directions, Wiley, 599-618. https://doi.org/10.1002/9781118511305.ch17
[21]
Eze, E.C., Zhang, S. and Liu, E. (2014) Vehicular Ad Hoc Networks (VANETs): Current State, Challenges, Potentials and Way forward. 2014 20th International Conference on Automation and Computing, Cranfield, 12-13 September 2014, 176-181. https://doi.org/10.1109/iconac.2014.6935482
[22]
Park, S. and Kim, N. (2012) Design of MAC Algorithm Supporting Adaptive Trans-mission Rate on VANET. Journal of the Institute of Electronics Engineers of Korea, 49, 132-138. https://doi.org/10.5573/ieek.2012.49.11.132
[23]
Proakis, J.G. (2001) Digital Communications. 4th Edition, McGraw-Hill.
