Abstract
Vehicle-to-Vehicle (V2V) networks support low-latency and high-reliability V2V communication via sidelink radio resource. Recently, the Third Generation Partnership Project (3GPP) is gradually promoting New Radio (NR)-V2V standardization work. According to 3GPP Release-16, vehicle user equipments (VUEs) autonomously select sidelink resource for transmission in NR-V2V resource allocation mode 2. Scheduling assignment (SA) decoding based resource selection algorithm is a distributed resource selection scheme and is adopted as the baseline for NR-V2V mode 2. However, the existing SA-decoding algorithm has the hidden node problem. In this paper, a two-step distributed resource selection scheme is proposed to reduce resource collisions caused by the hidden-node problem and improve the resource utilization of the existing scheme. The system-level simulation results show that the proposed scheme has better performance gain compared with SA-decoding algorithm.
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