Pub Date : 2018-09-07DOI: 10.1109/VNC.2018.8628416
Behrad Toghi, M. Saifuddin, M. O. Mughal, Hossein Nourkhiz Mahjoub, Y. P. Fallah, J. Rao, Sushanta Das
Vehicle-to-everything (V2X) communication enables vehicles, roadside vulnerable users, and infrastructure facilities to communicate in an ad-hoc fashion. Cellular V2X (C-V2X), which was introduced in the 3rd generation partnership project (3GPP) release 14 standard, has recently received significant attention due to its perceived ability to address the scalability and reliability requirements of vehicular safety applications. In this paper, we provide a comprehensive study of the resource allocation of the C-V2X multiple access mechanism for high-density vehicular networks, as it can strongly impact the key performance indicators such as latency and packet delivery rate. Phenomena that can affect the communication performance are investigated and a detailed analysis of the cases that can cause possible performance degradation or system limitations, is provided. The results indicate that a unified system configuration may be necessary for all vehicles, as it is mandated for IEEE 802.11p, in order to obtain the optimum performance. In the end, we show the inter-dependence of different parameters on the resource allocation procedure with the aid of our high fidelity simulator.
{"title":"Multiple Access in Cellular V2X: Performance Analysis in Highly Congested Vehicular Networks","authors":"Behrad Toghi, M. Saifuddin, M. O. Mughal, Hossein Nourkhiz Mahjoub, Y. P. Fallah, J. Rao, Sushanta Das","doi":"10.1109/VNC.2018.8628416","DOIUrl":"https://doi.org/10.1109/VNC.2018.8628416","url":null,"abstract":"Vehicle-to-everything (V2X) communication enables vehicles, roadside vulnerable users, and infrastructure facilities to communicate in an ad-hoc fashion. Cellular V2X (C-V2X), which was introduced in the 3rd generation partnership project (3GPP) release 14 standard, has recently received significant attention due to its perceived ability to address the scalability and reliability requirements of vehicular safety applications. In this paper, we provide a comprehensive study of the resource allocation of the C-V2X multiple access mechanism for high-density vehicular networks, as it can strongly impact the key performance indicators such as latency and packet delivery rate. Phenomena that can affect the communication performance are investigated and a detailed analysis of the cases that can cause possible performance degradation or system limitations, is provided. The results indicate that a unified system configuration may be necessary for all vehicles, as it is mandated for IEEE 802.11p, in order to obtain the optimum performance. In the end, we show the inter-dependence of different parameters on the resource allocation procedure with the aid of our high fidelity simulator.","PeriodicalId":335017,"journal":{"name":"2018 IEEE Vehicular Networking Conference (VNC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127570970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-19DOI: 10.1109/VNC.2018.8628390
Diogo Recharte, Ana Aguiar, Henrique Cabral
The absence of a timely and cost-effective way to perform over-the-air (OTA) software updates is contributing to defer the deployment of large fleets of connected vehicles. This work presents the design and implementation of a cooperative content dissemination protocol that takes advantage of Vehicle-to-Vehicle (V2V) communication links to distribute data across a network with reduced costs. The protocol uses probing instead of gossiping to reduce the risk of congestion, and parameter design follows statistics from a real vehicular network. Further, we carry out a thorough performance evaluation using 17 vehicles and 5 roadside units (RSUs) of a VANET operator. The results show that the dissemination time is significantly sped up by V2V cooperation and that is heavily influenced by vehicle mobility. Moreover, results show that the chunk size and decision algorithm can have a considerable impact on the performance of the protocol.
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