Optical Transport Bandwidth Management via Dynamic Virtual Link Activation
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Solution Overview
Problem
Software-defined networking (SDN) systems face challenges in efficiently utilizing optical transport network resources without data loss, leading to underutilization of resources due to inefficient bandwidth management.
Innovation Solution
A network management apparatus that monitors data traffic statistics and automatically activates or deactivates virtual links, tributary ports, and cross-connections in the optical transport domain using a sensor engine and sensor agents, communicating via protocols like NETCONF, RESTCONF, or OpenFlow, to optimize bandwidth utilization based on current and predicted traffic patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If SDN resources are statically allocated in optical transport network, then network stability is maintained, but resource utilization efficiency deteriorates leading to underutilization and data loss
Solution Approach 1:
The patent implements dynamic bandwidth management by continuously monitoring data traffic statistics on access links and automatically adjusting the activation/deactivation of virtual links, tributary ports, and cross-connections in the optical transport domain. This dynamic adaptation allows the network to respond to changing traffic conditions, improving resource utilization efficiency while maintaining network stability through controlled, protocol-based adjustments.
2Ease of operation
If manual bandwidth management is performed, then network control precision is maintained, but operational complexity and time consumption increase
Solution Approach 1:
The patent implements self-service bandwidth management through automated sensor agents deployed on boundary routers that autonomously monitor data traffic statistics and trigger appropriate bandwidth adjustments. The system automatically activates or deactivates virtual links, tributary ports, and cross-connections based on monitored traffic conditions, eliminating manual intervention while managing complexity through standardized protocols like NETCONF, RESTCONF, or OpenFlow.
3Reliability
If optical transport network resources are over-provisioned, then data loss is prevented, but resource waste increases leading to inefficiency
Solution Approach 1:
The patent implements feedback-based bandwidth management by continuously monitoring data traffic statistics on access links and using this information to dynamically adjust optical transport network resources. The sensor agents collect traffic data, and based on this feedback, the system automatically activates additional virtual links, tributary ports, or cross-connections when traffic thresholds are exceeded, preventing data loss while avoiding permanent over-provisioning and resource waste.
Data Source
AI summary
A communication network (1) comprising an optical transport domain network (2) having optical transport nodes connected to each other via physical optical links, packet switched networks (3) each having a boundary router (4) connected to an optical transport node of said optical transport domain network (2) via an access link (5); and a network management apparatus (6) adapted to perform an automatic bandwidth management of said communication network (1), wherein said network management apparatus (6) is adapted to activate or deactivate virtual links (VL), tributary ports and cross-connections between virtual and access links in the optical transport domain (2) in response to data traffic statistics of data transmitted on said access links (5).