With the development of the IoV(Internet of Vehicles), vehicles are embedded with various advanced wireless communications and sensor technologies, allowing vehicles to collect massive information on surroundings such as other vehicles, roads, traffic lights and pedestrians through V2X (Vehicle-to-Everything) communication. Therefore, V2X communication plays an important role in ITS(Intelligent Transportation Systems) and is enhancing road safety and traffic efficiency. Currently, the main wireless V2X communication technologies include 802.11p, LTE-V2X and NR-V2X. As the number of connected vehicles increases, the demand for reliable and efficient V2X communication grows. However, each V2X technology is not perfect and has inherent trade-offs in different aspects, such as latency, coverage, and reliability. Basically, IEEE 802.11p suffers from limited scalability and high congestion in dense traffic scenarios. LTE-V2X and NR-V2X offer improved network control and reliability but require cellular infrastructure and effective resource allocation strategies. It is essential to determine the optimal communication technology for different vehicular environments and propose improvements. 

There are studies for individual V2X technologies.

• Resource Allocation Modes in C-V2X: From LTE-V2X to 5G-V2X [1], which explains deep in resource allocation modes for LTE-V2X and NR-V2X.

• Impact Study of 5.8GHz WiFi to 5.9GHz LTE-V2X in Vehicle Environment [2], which examines the interference between WiFi and LTE-V2X in vehicular communication scenarios.

• Hybrid V2X Communication Approach using WiFi and 4G Connections [3], which explores a hybrid method V2X approach combining 802.11p and LTE-V2X to optimize the performance. The paper provided valuable signal quality data for the 802.11p approach.

These studies provide lots of valuable insights for each technology, providing theoretical knowledge and metrics in practice. The problem is that they lack a comprehensive comparative analysis across all three.

We will first present the main technical aspects related to 802.11p, LTE-V2X, and NR-V2X technologies and perform a detailed theoretical comparison of them. Then we will evaluate the key performance metrics such as response time, reliability, scalability, and resource allocation. After that, we will Identify possible optimization and hybrid approaches to improve V2X communications. Finally, we will analyze how new technologies such as artificial intelligence-based resource allocation can improve performance and list what is the drawback of each technology.

This approach will provide comprehensive information about V2X technology, its limitations, and optimization opportunities.

• A comprehensive comparative study for 802.11p, LTE-V2X, and NR-V2X technologies.

• A finalized report and presentation compare these technologies from the theoretical analysis perspective.

• Feb 5: Project proposal

• Feb 20: Explores the performance, features, and resource allocation mechanisms of 802.11p, LTE-V2X, and NR-V2X technologies in V2X communication.

• Mar 6: Evaluate and compare these technologies from a theoretical analysis perspective by diving deep into the examples from papers.

• Mar 20: Go through other related resources, verify our conclusion, and how these technologies can be applied to current life. Outline the structure of our paper.

• Apr 3: Practice and record for the final presentation.

• Apr 10: Finalise and submit the final report.