Optical LSP Bandwidth Aggregation for VC12 Service Management
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Solution Overview
Problem
Current optical communication systems face challenges in managing and transmitting fine granularity services, such as VC12 LSPs, due to low bandwidth utilization and poor recovery performance, especially when dealing with large numbers of VC12 LSPs, which lead to storage shortages and inefficient re-routing processes.
Innovation Solution
A method that increases the bandwidth of existing LSPs for fine granularity services by determining shared source and destination nodes, integrating services into coarse granularity, and re-routing them efficiently when failures occur, optimizing cross-connection resources and improving network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If VC12 LSPs are established for each fine granularity service, then service granularity is improved, but the number of LSPs grows huge leading to storage space shortage
Solution Approach 1:
Multiple VC12 LSPs with the same source and destination nodes are merged into a single LSP by increasing its bandwidth. Instead of maintaining 63 separate VC12 LSPs, the patent combines them into one LSP with aggregated bandwidth, significantly reducing the number of LSP entries in the database while preserving fine granularity service capabilities
Solution Approach 2:
A single LSP is designed to serve multiple functions by carrying multiple VC12 services simultaneously. The LSP structure is made universal to accommodate different granularities of services (VC12, VC3, VC2, VC11) through bandwidth aggregation, allowing one LSP to replace multiple specialized LSPs
2Adaptability or versatility
If VC12 LSPs are established for each fine granularity service, then service granularity is improved, but bandwidth utilization rate becomes very low
Solution Approach 1:
The patent merges multiple underutilized VC12 LSPs into a single LSP with aggregated bandwidth. By combining LSPs that share the same source and destination nodes, the system achieves better bandwidth utilization while maintaining the ability to provide fine granularity services through logical subdivision of the aggregated bandwidth
3Adaptability or versatility
If segment tunnels are established for VC12 services, then routing flexibility is improved, but re-routing capability during node failure is lost
Solution Approach 1:
The patent implements dynamic re-routing capability by allowing LSPs to be automatically recalculated and re-established when node failures occur. Unlike static segment tunnels, the LSP structure supports dynamic path recalculation through the network, enabling the system to adapt to changing network conditions while maintaining fine granularity service protection
4Ease of operation
If end-to-end tunnel is established for VC12 service, then setup simplicity is improved, but bandwidth utilization rate becomes very low
Solution Approach 1:
The patent combines multiple VC12 services into a single LSP with aggregated bandwidth, maintaining the simplicity of end-to-end tunnel setup while dramatically improving bandwidth utilization. The merging process allows the system to keep the ease of single-LSP management while achieving efficient resource usage through bandwidth aggregation
Data Source
AI summary
Embodiments of the present invention provide a method and an apparatus for managing and transmitting fine granularity services. The method includes: increasing the bandwidth of an existing LSP which controls a fine granularity service with the same granularity as that of a new fine granularity service to be established, upon determining that the new fine granularity service shares the same source node and destination node with the existing LSP; and transmitting the new fine granularity service with the increased bandwidth of the existing LSP. The bandwidth utilization rate of optical networks can be obviously increased when transmitting fine granularity services in accordance with the embodiments of the present invention; furthermore, the storage space of each node through which the LSP passes is saved and the recovery performance of fine granularity services is guaranteed.