Transmission Path Design Using Statistical Delay Fluctuation Analysis
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Solution Overview
Problem
Current transmission systems face limitations in designing flexible bandwidth for each path in a network, leading to suboptimal accommodation efficiency and reliability due to worst-case design assumptions based on fixed conditions.
Innovation Solution
A management device that collects statistical traffic information to calculate delay fluctuations and designs paths with reduced delay fluctuations, allowing for flexible bandwidth allocation and notification of paths that cannot be set as uninterruptible, enabling more efficient bandwidth use and improved network reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If worst-case design assumptions are used to ensure reliability, then network reliability is improved, but bandwidth accommodation efficiency deteriorates
Solution Approach 1:
The patent changes the design parameter from fixed worst-case assumptions to dynamic statistical parameters based on actual traffic measurements. By collecting traffic statistics over time and calculating delay fluctuations based on observed data rather than theoretical maxima, the system adapts bandwidth allocation to actual network conditions, improving accommodation efficiency while maintaining reliability through statistically-based guarantees.
2Device complexity
If fixed bandwidth allocation is used to simplify design, then device complexity is reduced, but adaptability to different path conditions deteriorates
Solution Approach 1:
The patent implements dynamic bandwidth allocation by continuously collecting traffic statistics and recalculating delay fluctuations for each path. Instead of static fixed bandwidth assignments, the system adapts bandwidth allocation to current network conditions, allowing different paths to receive appropriate bandwidth based on their actual traffic patterns and delay characteristics, thereby improving adaptability without significantly increasing operational complexity.
Solution Approach 2:
The system incorporates feedback mechanisms by collecting actual traffic statistics from the network and using this information to adjust bandwidth allocation decisions. The management device monitors traffic patterns, calculates delay fluctuations based on observed data, and uses this feedback to optimize path selection and bandwidth assignment, enabling adaptive response to changing network conditions while maintaining manageable system complexity.
3Reliability
If delay fluctuation absorption is increased to ensure uninterruptible transmission, then transmission reliability is improved, but bandwidth utilization deteriorates
Solution Approach 1:
The patent changes the approach to delay fluctuation absorption from using fixed large buffer sizes to dynamically calculated buffer requirements based on actual traffic statistics. By measuring real traffic patterns and calculating the actual delay fluctuations observed, the system determines the minimum buffer capacity needed for each path, reducing excessive bandwidth reservation while maintaining uninterruptible transmission reliability through statistically-based buffer sizing.
Data Source
AI summary
A management device of a transmission system includes a new path information input unit, a statistical information collecting unit that collects statistical information of actual traffic from nodes, and an uninterruptible path designing unit that calculates a delay fluctuation in an entire path with respect to a fluctuation for each section of the path, and designs a path in which the calculated delay fluctuation is smaller than a maximum fluctuation amount according to a buffering amount in the reception node as an uninterruptible path, a path information setting unit that updates path information of the path and stores the updated path information in an existing path information storage unit, and sets a bandwidth permitted in a node constituting the path in the node, and a notification unit that notifies a user of a path that was not designed as the uninterruptible path.