A Review of Research on Traffic Conflicts Based on Intelligent Vehicles <s> III. RESEARCH ON TRAFFIC CONFLICT BASED ON INTELLIGENT VEHICLES COMMUNICATION TECHNOLOGY <s> Abstract Vehicle-to-Everything (V2X) communications are widely recognized as a key technology enabler of increased road safety, improved traffic efficiency, and more comfortable traveling experience. Notably, vehicles on the road may share common interests and some mobility patterns determined by the road topology and the human habits and they can cooperate by exchanging valuable information. These social aspects of vehicular mobility can be exploited in many ways, for entertainment, public utility and emergency purposes. In this paper we speculate on how the social dimension can be leveraged in future fifth generation (5G) V2X systems. Specifically, we propose a novel social-enhanced 5G-V2X framework which leverages mobile edge computing (MEC) and software-defined networking (SDN) technologies with the aim to exploit social relationships between V2X entities and facilitate data delivery in this context. Early results are provided to showcase the viability of the proposal in a representative scenario, i.e., safety alert dissemination, and demonstrate its benefits compared to a legacy cellular-aided data dissemination approach. <s> BIB001 </s> A Review of Research on Traffic Conflicts Based on Intelligent Vehicles <s> III. RESEARCH ON TRAFFIC CONFLICT BASED ON INTELLIGENT VEHICLES COMMUNICATION TECHNOLOGY <s> Abstract The integration of Internet of Things (IoT) into cellular network infrastructure is gaining much attention from the research community and standardisation groups, where new cellular-based enabling communication technologies are proposed to provide data links over existing cellular networks for IoT deployment. The Long Term Evolution (LTE) network and the emerging 5G system (New Radio) are widely acknowledged as the main driving forces for the connected-vehicle in the mobile network domain. On the other hand, vehicular networks are characterised by high mobility, high node density, dynamic network topology, time sensitivity and high transmission reliability. These unique characteristics of vehicular networks introduce new security implications and therefore, necessitate enhancement of existing LTE security or provision of new security techniques, in order to ensure fast, secure and reliable vehicular communications under mobile network. In this paper, an introduction to Vehicle to Everything (V2X) communications and services alongside the corresponding service requirement is presented. Then, the potential benefits of using cellular infrastructure for V2X services and the reference architectures for cellular-based V2X systems are described. We then focus on the security requirements of V2X in cellular network, specifically; on the authentication of V2X entities, as any violation or breach of authentication process can expose the entire network to serious consequences. The paper discusses common V2X threats and surveys existing V2X authentication solutions proposed in the literature. Finally, paper presents security issues related to V2X communication in cellular network leading towards possible research challenges. <s> BIB002
Through modern communication and network technology, vehicles, roads, pedestrians and other traffic participants are no longer isolated islands, but become information nodes in the intelligent traffic system. For the perception of the surrounding environment, communication technology has a breakthrough in both temporal and spatial dimensions compared with the perceptual technology. In the temporal dimension, through V2X communication, the intelligent vehicles can obtain the road information including the operation information of surrounding vehicles, the traffic control information such as traffic lights, and the longer-term future information such as weather conditions and congestion prediction. In the spatial dimension, through V2X communication, the intelligent vehicles can sense the environmental information of the intersections and the blind spots of the corners and vehicles. The above information help the vehicle comprehensively grasp the surrounding traffic situation  . V2X means Vehicle to Everything, which refers to key transportation nodes such as vehicles and other vehicles, road infrastructure, non-motor vehicles, and people. V2V (Vehicle to Vehicle), V2I (Vehicle to Infrastructure), etc., belong to V2X technology, and V2X communication type is shown in Fig. 8 . Through DSRC, LTE-V2X, satellite positioning, microwave sensor and other technologies, vehicle status information and traffic environment information can be collected to achieve data sharing in order to achieve the state of interconnection between vehicles and other things  . Vehicle-to-everything (V2X) communication is widely recognized as a key technology enabler for improving road safety and traffic efficiency, as well as a more comfortable driving experiences BIB001 . The goal of road safety based on V2X is to achieve zero tolerance for road traffic accidents and fewer deaths in the near future, including detection of moving/fixed obstacles on the road, collision avoidance, release of weather information, road hazard notifications, etc. BIB002 .