Service differentiation using hybrid shared optical buffers in transparent optical networks

Area of Science:

• Optical Networking
• Telecommunications Engineering
• Computer Networks

Background:

• Transparent optical networks require efficient mechanisms for service differentiation.
• Existing solutions may not adequately address diverse Quality of Service (QoS) requirements.
• Optical buffers are crucial components for managing network traffic and ensuring performance.

Purpose of the Study:

• To propose a novel service differentiation mechanism using optical buffers in transparent optical networks.
• To introduce a hybrid shared optical buffered node based on fiber delay lines (FDLs).
• To analyze the impact of the burst assembly process on buffer performance and optimize it through dynamic adjustments.

Main Methods:

• Introduction of fiber delay line (FDL)-based optical buffers.
• Proposal of a hybrid shared optical buffered node architecture.
• Analysis of blocking performance considering the burst assembly process and FDL basic delay unit.
• Dynamic adjustment of burst length based on changing traffic load.

Main Results:

• The proposed hybrid shared optical buffered node effectively satisfies diverse service requirements.
• Assigning different priorities to buffer access allows for differentiated services.
• Dynamic adjustment of burst length optimizes buffer performance under varying traffic conditions.
• Simulation results demonstrate improved burst blocking probability and buffering delay time.

Conclusions:

• The novel service differentiation mechanism utilizing optical buffers is effective in transparent optical networks.
• The proposed hybrid shared optical buffered node provides a flexible solution for QoS provisioning.
• Dynamic burst length adjustment is a key factor in achieving optimal buffer performance and meeting service demands.