Emergency Communications Based on Throughput-Aware D2D Multicasting in 5G Public Safety Networks.

Area of Science:

• Wireless Communication Networks
• Public Safety Communications
• 5th Generation Wireless Systems (5G)

Background:

• Emergency communications face increasing demands and complex network scenarios in Public Safety Networks (PSNs).
• Heterogeneous Cloud Radio Access Network (H-CRAN), a key 5G technology, offers resource sharing and centralized allocation beneficial for PSNs.
• Existing PSN infrastructure can experience resource shortages during emergencies.

Purpose of the Study:

• To propose an emergency communication strategy for PSNs that enhances flexibility and speed.
• To improve data transmission rates and ensure stable, continuous real-time communication during emergencies.
• To optimize resource utilization and extend network coverage in PSNs.

Main Methods:

• A Device-to-device (D2D) multicast strategy is developed for flexible and rapid emergency communications.
• User clustering is performed based on distance, followed by cluster head selection schemes considering terminal power and extended users.
• The Hungarian Algorithm, incorporating throughput awareness, is applied for efficient channel multiplexing.

Main Results:

• The proposed D2D multicast strategy effectively extends the coverage area of Public Safety Networks (PSNs).
• The scheme demonstrates optimized utilization of network resources.
• High-speed data transmission and stable, continuous real-time communications are achieved.

Conclusions:

• The developed emergency communication strategy based on D2D multicast significantly improves PSN performance.
• The integration of H-CRAN and D2D technologies offers a robust solution for emergency communication needs.
• The proposed methods provide a flexible, efficient, and scalable approach to enhance public safety communications.