Performance Analysis and Boost for a MAC Protocol in Vehicular Networks
- 10 July 2019
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Vehicular Technology
- Vol. 68 (9) , 8721-8728
Abstract
This paper proposes an analytical model to investigate the performance of periodical broadcast of safety messages in vehicular ad hoc networks (VANETs), regarding a novel MAC protocol, called NC-PNC MAC. We firstly examine the percent of vehicles involved in subcarrier collisions during a random OFDMA scheme, and then analyze the total number of transmissions and the packet delivery ratio (PDR) during one dissemination period. Based upon the analysis, the paper reveals how the subcarrier collision probability influences the PDR performance and the maximum PDR is acquired mathematically. To confirm the results, by adjusting a pivotal parameter of the MAC protocol in simulation, the PDR performance for BSM broadcast in VANETs can be enhanced by 10% to 30% under the constraint of the delivery latency.Keywords
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