Xiaoning Wang
ABSTRACT
Intelligent Transportation System (ITS) applications in vehicle networks often use latency, reliability, and throughput as performance metrics. However, these traditional metrics fail to indicate the freshness of data. ”Age-of-information” (AoI) has been emphasized as a critical requirement for real-time applications as a new performance metric. Traditional broadcast-based data propagation tends to cause congestion because it needs a lot of vehicles to participate in the data transmission, resulting in large AoI. With the help of mobile edge computing, this paper proposes a new unicast-based data propagation approach to reduce AoI. In this scenario, an edge computing server computes and determines vehicle nodes for the purpose of propagating time-sensitive data via V2V communication. The goal of this research is to provide an AoI-aware unicast data propagation method that optimizes the initial vehicle nodes selection and design scheduling rules for maintaining information fresh under a coverage rate restriction (corresponding to emergency level). Simulation results show that the proposed unicast-based method has lower AAoI and PAoI than that of the traditional broadcast-based method.
- Xianfu Chen, Celimuge Wu, Tao Chen, Honggang Zhang, Zhi Liu, Yan Zhang, and Mehdi Bennis. 2020. Age of information aware radio resource management in vehicular networks: A proactive deep reinforcement learning perspective. IEEE Transactions on wireless communications 19, 4(2020), 2268–2281.Google Scholar
Cross Ref
- Sanjit Kaul, Marco Gruteser, Vinuth Rai, and John Kenney. 2011. Minimizing age of information in vehicular networks. In 2011 8th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks. IEEE, 350–358.Google ScholarCross Ref
- Sanjit Kaul, Roy Yates, and Marco Gruteser. 2012. Real-time status: How often should one update?. In 2012 Proceedings IEEE INFOCOM. IEEE, 2731–2735.Google ScholarCross Ref
- Gaurang Naik, Biplav Choudhury, and Jung-Min Park. 2019. IEEE 802.11bd & 5G NR V2X: Evolution of radio access technologies for V2X communications. IEEE access 7(2019), 70169–70184.Google Scholar
Index Terms
- AoI-aware Data Propagation in Edge Computing Assisted NR-V2X Networks
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