Slice Management for Quality of Service Differentiation in Wireless Network Slicing

Area of Science:

• Wireless communication networks
• Network virtualization
• Quality of Service (QoS) management

Background:

• Network slicing virtualizes infrastructure into logical networks (slices) for application-specific QoS.
• Resource isolation in wired networks is achieved via dedicated bandwidths.
• Wireless network slicing faces challenges due to interference affecting bandwidth and QoS.

Purpose of the Study:

• To propose a novel slice management scheme for wireless networks.
• To mitigate interference and differentiate Quality of Service (QoS) among network slices based on priority.
• To enhance overall network performance, including throughput and delay.

Main Methods:

• Implemented a priority-based routing policy for traffic flows within network slices.
• Highest priority slices use shortest path routing.
• Lower priority slices minimize weighted interference to higher priority slices.

Main Results:

• The proposed scheme successfully differentiates QoS according to slice priorities.
• Significant improvements in average throughput (up to 13%) and reduction in average delay (up to 15%) were observed compared to Naïve Slice Management (NSM).
• Performance gains were validated across various network topologies (grid and random) and node counts (16, 100, 200).

Conclusions:

• The proposed slice management scheme effectively addresses interference challenges in wireless network slicing.
• It provides differentiated QoS and superior performance over traditional priority queuing methods.
• The approach offers a viable solution for optimizing wireless network slice performance.