Path Management Controller Advance Reservation Bandwidth
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Solution Overview
Problem
Existing network bandwidth reservation techniques fail to ensure users can secure advance reservations as desired, particularly when there are limitations in link bandwidth during the requested period, leading to potential path setting denials.
Innovation Solution
A path management control method using a controller that calculates and sets advance reserved paths by identifying alternative routes and rearranging resource allocations, including time slots, to ensure bandwidth availability, thereby reducing the likelihood of path setting denials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a user requests an advance bandwidth reservation with specific bandwidth and period requirements, then the user can secure guaranteed network resources, but the path setting may be denied when link bandwidth is insufficient during the requested period
Solution Approach 1:
The system performs preliminary route calculation and bandwidth availability checking before finalizing the path setting. By proactively identifying alternative routes and verifying bandwidth availability in advance, the system prevents path setting denials and ensures reliable bandwidth reservation for users.
Solution Approach 2:
The system dynamically adjusts route parameters by calculating alternative routes when the primary route cannot satisfy bandwidth requirements. By changing the route parameters (different paths through the network), the system finds available bandwidth resources to meet user reservation requirements.
2Ease of operation
If the system calculates alternative routes and rearranges resource allocations to secure bandwidth, then path setting success rate improves, but system complexity increases
Solution Approach 1:
The path management controller automatically performs route calculation, bandwidth checking, and alternative route selection without external intervention. The system self-manages the complex resource allocation process by autonomously analyzing network state and making routing decisions, reducing the need for manual configuration despite the increased computational complexity.
Solution Approach 2:
The system continuously monitors network bandwidth availability and uses this feedback to dynamically adjust route calculations. By incorporating real-time network state feedback into the route calculation process, the system adapts to changing conditions and finds suitable paths while managing complexity through iterative optimization.
Data Source
AI summary
The path management controller 1 refers to resource information 131 including reservation statuses of working paths and advance reserved paths that are set in every link, so as to calculate a route for setting a new path and set this path in this calculated route. If the route for setting this new path cannot be obtained (1) because of a shortage of residual bandwidth of a link of interest, the path management controller 1 refers to the resource reservation information 131 of working paths and advance reserved paths and calculates an alternative route for another existing path used in the link of interest, and moves this path to the calculated alternative route. On the other hand, if the route for setting this new path cannot be obtained (2) because there is no continuous bandwidth sufficient for setting this new path in the link of interest, the path management controller 1 refers to the resource reservation information regarding working paths and advance reserved paths in the link of interest in the resource information 131, so as to execute the time slot rearrangement.