Performance evaluation of safety applications over DSRC vehicular ad hoc networks

Abstract

In this paper we conduct a feasibility study of delay-critical safety applications over vehicular ad hoc networks based on the emerging dedicated short range communications (DSRC) standard. In particular, we quantify the bit error rate, throughput and latency associated with vehicle collision avoidance applications running on top of mobile ad hoc networks employing the physical and MAC layers of DSRC. Towards this objective, the study goes through two phases. First, we conduct a detailed simulation study of the DSRC physical layer in order to judge the link bit error rate performance under a wide variety of vehicles speeds and multi-path delay spreads. We observe that the physical layer is highly immune to large delay spreads that might arise in the highway environment whereas performance degrades considerably at high speeds in a multi-path environment. Second, we develop a simulation testbed for a DSRC vehicular ad hoc network executing vehicle collision avoidance applications in an attempt to gauge the level of support the DSRC standard provides for this type of applications. Initial results reveal that DSRC achieves promising latency performance, yet, the throughput performance needs further improvement.

Opportunistic Spectrum Utilization in Vehicular Communication Networks

“…On these channels, safety messages have a higher priority over non-safety messages in order to guarantee the reliability of safety applications. A more detailed discussion on DSRC can be found in [28,29].…”

“…Many efforts have been made to bring the promising technology to fruition. The study of characterizing and enhancing the performance of DSRC/WAVE can be found in [5,16,29,31,32].…”

EDR: Efficient Decentralized Revocation Protocol for Vehicular Ad Hoc Networks

“…7. According to the dedicated short-range communication (DSRC) specifications, each wireless data channel in VANET has a bandwidth of 10 MHz that corresponds to a channel data rate in the range of 3-27 Mb/s [31]. We select a data rate of 6 Mb/s for the wireless channels in a VANET.…”

Human centric data fusion in Vehicular Cyber-Physical Systems

“…Most of these applications rely on single-hop communication and their effectiveness is evaluated based on two key aspects: success of delivery and the practical benefit [1]. It is worth noting that VCPS has a human element in the loop since the driver is the final control unit for all generated information.…”