Performance of Defragmentation Approach Based on Route Partitioning in 1+1 Protected Elastic Optical Networks
- Resource Type
- Conference
- Authors
- Oki, Eiji; Chatterjee, Bijoy Chand
- Source
- 2023 23rd International Conference on Transparent Optical Networks (ICTON) Transparent Optical Networks (ICTON), 2023 23rd International Conference on. :1-4 Jul, 2023
- Subject
- Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Signal Processing and Analysis
Transportation
Interference
Optical fiber networks
Reliability
route partitioning
defragmentation
full-1+1 and quasi-1+1 path protection
elastic optical networks
- Language
- ISSN
- 2161-2064
Spectrum fragmentation suppresses spectrum usage in survivable elastic optical networks (EONs). Survivable EONs with full and quasi-1+1 protected services require an effective spectrum defragmentation approach. Full-1+1 path protection ensures dependability without disrupting traffic when the backup route cannot be reallocated. If a working path fails while its backup route is being moved, the reliability of a service that provides full-1+1 protection goes down. To defragment them, network operators must carefully study EONs with full-1+1 and quasi-1+1 protected lightpaths. In 1+1 protected EONs with full and quasi-1+1 protected services, route partitioning-based defragmentation reduces spectrum fragmentation and blocking probability. Retuning interference arises when a full-1+1 protected lightpath cannot be returned to fill up a gap created by a terminated lightpath owing to interfering from another lightpath that stops it from retuning farther. The introduced defragmentation approach minimizes this interference. A simulation study demonstrates the efficacy of the presented defragmentation approach with route partitioning.