Abstract
For vehicle-to-vehicle (V2V) communication, such issues as continuity and reliability still have to be solved. Specifically, it is necessary to consider a more scalable physical layer due to the high-speed mobility of vehicles and the complex channel environment. Adaptive transmission has been adapted in channel-dependent scheduling. However, it has been neglected with regards to the physical topology changes in the vehicle network. In this paper, we propose a physical topology-triggered adaptive transmission scheme which adjusts the data rate between vehicles according to the number of connectable vehicles nearby. Also, we investigate the performance of the proposed method using computer simulations and compare it with the conventional methods. The numerical results show that the proposed method can provide more continuous and reliable data transmission for V2V communications.
Highlights
Vehicular communication has been attracted as a crucial use case for 5G communication.The vehicles can communicate directly with other vehicles or adjacent infrastructures, such as access points (APs), or fixed equipment beside the road referred to as roadside units (RSU) [1]
For the purpose of addressing the issues described above, in this work, we propose a physical topology adapting transmission scheme in which a vehicle can adjust the transmission data rate by changing the modulation type according to the number of the nearby connectable vehicles
The performances are evaluated in terms of bitdetails error rate (BER), frame error rate (FER), and throughput
Summary
Vehicular communication has been attracted as a crucial use case for 5G communication.The vehicles can communicate directly with other vehicles or adjacent infrastructures, such as access points (APs), or fixed equipment beside the road referred to as roadside units (RSU) [1]. The vehicular ad-hoc network (VANET), a variation of the mobile ad-hoc network (MANET), is a technology used for an intelligent transport system (ITS) where the moving vehicles are wirelessly connected [2]. Other kinds of applications rapidly grow due to the passengers’ desire for IP-based Internet services such as internet surfing, email, file download, multimedia entertainment, parking, and tourist guide information. These require the introduction of wireless local area network (WLAN) technology to the VANET [4], such as IEEE 802.11p or short-range communication (DSRC) since 2010 [5]. The Wi-Fi direct is a standard defined by the Wi-Fi Alliance to enable devices to directly communicate with others [7]
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