QoS-Balancing Algorithm for Optimal Relay Selection in Heterogeneous Vehicular Networks

Aljawharah Alnasser, Hongjian Sun*, Jing Jiang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)
13 Downloads (Pure)


Intelligent Transportation System (ITS) could facilitate communications among
various road entities to improve the driver's safety and driving experience. These communications are called Vehicle-to-Everything (V2X) communications that can be supported by LTE-V2X protocols. Due to frequent changes of network topology in V2X, the source node (e.g., a vehicle) may have to choose a Device to-Device(D2D) relay node to forward its packet to the destination node. In this paper, we propose a new method for choosing an optimal D2D relay node. The proposed method considers Quality of Service (QoS) requirements for selecting D2D relay nodes. It employs an Analytic Hierarchy Process (AHP) for making decisions. The decision criteria are linked with channel capacity, link stability and end-to-end delay. A number of simulations were performed considering various network scenarios to evaluate the performance of the proposed method. Simulation results show that the proposed method improves Packet Dropping Rate (PDR) by 30% and delivery ratio by 23% in comparison with the existing methods.
Original languageEnglish
Article number9440847
Pages (from-to)8223-8233
Number of pages11
JournalIEEE Transactions on Intelligent Transportation Systems
Issue number7
Early online date25 May 2021
Publication statusPublished - 1 Jul 2022


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