Journal ArticleDOI
Data aggregation in UAV-aided random access for the Internet of Vehicles
TLDR
An aggregators-aided random access scheme for IoV is proposed, where unmanned aerial vehicles (UAVs), as one of the key components in SAGIN, are deployed as data aggregators to help transmissions of VUEs.Abstract:
Recently, the Internet of Vehicles (IoV) has been employed as an enabling technology for smart transportation, which can be further enhanced by integrating space-air-ground integrated networks (SAGIN). Since the data packets of vehicular user equipments (VUEs) are generally short, random access is usually considered for VUEs to connect to the network. However, collisions caused by the multiple VUEs initiating random access simultaneously are inevitable. To relieve the performance degradation by collisions, data aggregation can be carried out in the IoV, where aggregated packets can be relayed to a base station (BS). In this paper, we first propose an aggregators-aided random access (ARA) scheme for the IoV, where unmanned aerial vehicles (UAVs), as one of the key components in SAGIN, are deployed as data aggregators to help transmissions of VUEs. Then, a Semi-Markov chain is used to analyze the average number of aggregated packets and the metric of average data to overhead ratio (ADOR) is presented to evaluate the efficiency of aggregation. Finally, the altitude of UAVs and the duration of data aggregation are optimized to maximize the ADOR. By numerical simulations, the accuracy of the analysis as well as the effectiveness of the proposed scheme are validated.read more
Citations
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Journal ArticleDOI
Joint Communication and Trajectory Optimization for Multi-UAV Enabled Mobile Internet of Vehicles
TL;DR: A multi-UAV enabled mobile Internet of Vehicles (IoV) model is proposed, where the UAVs track to serve the mobile vehicles and send downlink information to the vehicles during the flight time by jointly optimizing vehicle communication scheduling, UAV power allocation and UAV trajectory optimization.
Journal ArticleDOI
Autonomous Cooperative Search Model for Multi-UAV With Limited Communication Network
TL;DR: In this article , a new cooperative architecture oriented to a local communication network is devised to control the observation locations of multiple UAVs in the search process, and some local communication networks are established based on the distance among UAV-BSs to meet the requirements of the search task.
Journal ArticleDOI
Autonomous Cooperative Search Model for Multi-UAV With Limited Communication Network
TL;DR: A new cooperative architecture oriented to a local communication network is devised to control the observation locations of multiple UAVs in the search process, and some local communication networks are established based on the distance among Uavs to meet the requirements of the search task.
Journal ArticleDOI
Age of Information Aware UAV Deployment for Intelligent Transportation Systems
TL;DR: In this article , the authors developed a UAV-aided intelligent transportation system to enhance the usage of vehicular networks and support low latency vehicular services, where the concept of age-of-information (AoI) is adopted to measure the freshness of data packets of vehicles.
Journal ArticleDOI
Data‐centric approaches in the Internet of Vehicles: A systematic review on techniques, open issues, and future directions
TL;DR: In this article , the authors present a systematic literature review (SLR) for the IoV networks to investigate the different attitudes in the field of data-centric approaches, including security, data traffic, vehicular social network, data propagation, energy, and multimedia categories.
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