Performance evaluation for co-channel coexistence between ITS-G5 and LTE-V2X

Abstract

Two technologies are currently competing for providing Vehicle-to-Everything (V2X) communication services in Europe and in the 5.9 GHz ITS band. The oldest one is known as ITS-G5 and specified by ETSI, and the new comer is standardized in 3GPP and derived from LTE technology. It is now conjectured that both technologies will coexist in the deployment phase, at least during a transition period. Several coexistence scenarios are currently under study. Some of them are even considering the option to share a 10 MHz radio channel in the 5.9 GHz band among both technologies under the same geographical area. This approach is called co-channel coexistence. New mechanisms are currently explored and assume some modifications of the standards aimed at minimizing the performance losses. This co-channel coexistence scenario requires a careful assessment, and this article proposes the first performance evaluation in this particular context of coexistence between ITS-G5 and LTE-V2X standards. It presents a simulation work that has been carried out with the purpose of assessing performance of mixed deployments, and also assessing the efficiency of one possible coexistence mechanism. It is based on system level simulation which is itself relying on physical layer performance assessment pertaining to both technologies. The simulation methodology is presented and evaluation results are provided and commented.

Technology recognition and traffic characterization for wireless technologies in ITS band

“…Energy detection based spectrum sensing is used in most existing coexistence schemes in ITS band [10,18,19,20]. Devices using energy detection-based spectrum sensing measure local energy to determine channel availability.…”

“…They also propose that the Wi-Fi devices operating at 5.9 GHz should use increased interframe spacing to give more transmission time to the native ITS band vehicular communication. The authors of [19] investigate co-channel interference between C-V2X PC5 and ITS-G5 in the 5.9 GHz band, where the two technologies share a 10 MHz radio channel. This article proposes new mechanisms that can be used to minimize the performance losses and evaluate co-channel interference between the two technologies.…”

Analysis of Co-Channel Coexistence Mitigation Methods Applied to IEEE 802.11p and 5G NR-V2X Sidelink

“…This is because, with periodic traffic, the LTE-V2X could predict more accurately which resources would be accessible in the near future and mitigate the packet collision between these two technologies. The possible benefit of co-channel coexistence mitigation methods for reducing performance loss is then suggested through early simulations in [8].…”

A survey on road safety and traffic efficiency vehicular applications based on C-V2X technologies

“…Hybrid solutions: The combination of IEEE 802.11p for V2V communications and LTE Uu for V2I and V2N communications has received some attention in the literature [150] [151] [152] [153]. However, the role of networks based on IEEE 802.11p and their potential combination with C-V2X networks through the PC5 and Uu interface is still an open issue, with some initial works exploring architectures for heterogeneous access networks [154] [155] and others looking at the co-existence of IEEE 802.11p and LTE PC5 mode 4 in the same radio channel [156]. Even within C-V2X technologies, the role of the different interfaces -LTE PC5, NR PC5, and NR Uu -in the provision of services is also an open issue.…”