SDN-Enabled Load-Latency Co-Optimization for TWDM-PON with Cloud-Edge Collaboration

To address the limitation of existing access networks in flexibility, this paper proposes a cloud-edge coordinated flexible time and wavelength division multiplexed passive optical network (TWDM-PON) architecture and a task-type-based cross-domain load-latency cooperative resource scheduling algorithm (TT-CRLCS). Leveraging software defined network (SDN) technology, the proposed algorithm jointly optimizes regional load balancing and end-to-end (E2E) latency to satisfy diverse services.