2. Introduction
• Vehicular communications enable information exchange among vehicles and
infrastructures.
• Importance due to support for intelligent transportation, safety applications, and on-road
infotainment.
• Overview of research focusing on efficient and reliable vehicular communications from the
network layer perspective.
• Vehicular communications play a vital role in enhancing transportation safety and efficiency.
• Addressing challenges in network layer perspective crucial for enabling efficient and reliable
communication.
• Ongoing research efforts aim to overcome obstacles and pave the way for advanced
vehicular communication systems.
3. Types of Vehicular Networks
Vehicular network classification is based on the driving patterns:
• Manually Driven Vehicular Networks (MDVNETs)
Vehicles driven manually, focus on improving traffic safety and providing infotainment
services.
• Automated Driving Vehicular Networks (ADVNETs)
Autonomous vehicles, aiming for safety, velocity, convenience, and reduced energy
consumption.
4. Technologies for MDVNETs
• DSRC: Dedicated Short-Range Communications with designated bandwidth and high reliability.
• Cellular networks: Long-lived V2I connectivity, high capacity, and potential for short-range D2D
communications.
Communication Structures for ADVNETs
• Emphasis on inter-vehicle information exchange for autonomous vehicle safety.
• Exploration of short-range technologies like infrared (IR) and visible light communications (VLC)
for ADVNETs.
5. Challenges in Vehicular Network
• High mobility: Frequent disconnected wireless links, dynamically changing network topology.
• Stringent delay constraints: Critical for safety applications, necessitating timely information
exchange.
• Complicated communication environment: Varied scenarios like highways, urban areas, and
viaducts pose challenges.
6. Solutions and Strategies
• Improved broadcast mechanisms for DSRC to mitigate packet delay and collision probability.
• Utilization of cellular technologies for long-lived V2I connectivity and capacity enhancement.
• Development of short-range direct links through D2D communications to overcome spectrum limitations.
Future Directions and Research Opportunities
• Identification of challenges and potential solutions for both MDVNETs and ADVNETs.
• Continued research focus on routing protocols, handoff strategies, and adapting communication
technologies to evolving vehicular environments
7. In this presentation, I'll delve into pages 5 to 8 of
our paper on vehicular communications from a
network layer perspective. We explore how
vehicular networks can revolutionize
transportation by enhancing safety, efficiency, and
driving experience through advanced
communication technologies.
17. Conclusion
In this paper, we conduct a comprehensive survey of vehicle
communications from a network layer perspective, including
communications in MDVNETs and ADVNETs, analyse the advantages and
disadvantages of different communication technologies for these two
vehicular networks, and propose some potential solutions.