Abstract
In this paper, we investigate the relay selection problem for the unmanned aerial vehicle (UAV)-assisted vehicular ad-hoc networks (VANETs). For the considered network, we first model and analyze the link quality of service (LQoS) from the source node (SN) to the neighbor node and the node forward capacity (NFC) from the neighbor node to the destination node (DN). Then, the relay selection problem is formulated as a multi-objective optimization problem by jointly considering the LQoS and the NFC. Afterward, we decompose the problem into two subproblems and propose a relay selection protocol with the storage-carry-forward (SCF) method. Moreover, we define a utility function with the node encounter frequency (NEF) and the message time-to-live (TTL) taken into account, based on which a redundant copy-deleting approach is devised. Furthermore, we analyze the security of the designed protocol. Finally, the simulation results demonstrate that the proposed relay selection protocol can improve the message delivery ratio, reduce the average end-to-end delay, and limit the overhead.
Highlights
Vehicular ad-hoc networks (VANETs) can provide users a safer and more pleasant driving experience through integrating wireless communication and informatics technologies into the intelligent transportation system (ITS) [1]
The works in [9,10,11,12] consider the link quality of service (LQoS), they do not take into account the node forward capacity (NFC), which has an important effect on the message delivery ratio and the average end-to-end delay
The MTAP uses the flooding technique for message delivery, and the CORV predicts the transfer probability based on the unmanned aerial vehicle (UAV) course information for relay selection
Summary
Yixin He 1,2,3,4 , Daosen Zhai 2,3, *, Dawei Wang 1,2 , Xiao Tang 2 and Ruonan Zhang 2. State Key Laboratory of Integrated Services Networks, Xidian University, Xi’an 710072, China. Received: 3 November 2020; Accepted: 4 December 2020; Published: 7 December 2020
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have