Cross-layer latency analysis for 5G NR in V2X communications.

Area of Science:

• Wireless Communication Engineering
• Telecommunications Network Analysis
• Performance Modeling

Background:

• 5G networks aim for unprecedented performance: Gbps speeds, sub-millisecond latency, and massive device connectivity.
• Achieving 5G capabilities requires new spectrum (millimeter waves) and advanced techniques like Massive MIMO and beamforming.
• A novel radio interface, 5G New Radio (NR), was designed with enhanced physical components and protocols.

Purpose of the Study:

• To introduce an analytical model for evaluating the performance of 5G NR.
• To describe the behavior of Layer 1 and Layer 2 protocols within 5G radio communication.
• To enable performance assessment of 5G NR in terms of throughput and latency for Quality of Service (QoS) evaluation.

Main Methods:

• Development of an analytical model to simulate 5G NR protocol behavior.
• Layered protocol analysis to identify performance-critical elements.
• Performance evaluation using the model, exemplified by a Remote Driving scenario.

Main Results:

• The model accurately describes 5G NR Layer 1 and Layer 2 protocol interactions.
• Performance evaluation metrics include throughput and latency, crucial for QoS.
• The model demonstrates 5G's potential to meet stringent delay requirements for applications like Remote Driving, given adequate network conditions.

Conclusions:

• The developed analytical model provides a granular approach to understanding 5G NR performance.
• It aids in identifying critical protocol behaviors impacting network performance.
• The model serves as a foundation for evaluating end-to-end (E2E) communication performance in 5G applications.