Multi-Path Tunnel Measurement Reporting for Timely Congestion Control
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Solution Overview
Problem
In segment routing SRv6 networks, measurement reporting of path congestion is imprecise due to the inability to report results in a timely manner for multiple paths within a tunnel, leading to inefficient congestion management.
Innovation Solution
A method where a first network node receives measurement packets from a second network node on multiple paths and sends result packets at regular intervals, including sequence numbers and thresholds to indicate measurement results, enhancing precision and enabling timely congestion adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If measurement packets are sent on multiple paths simultaneously, then network bandwidth and throughput are expanded, but measurement reporting precision deteriorates because results cannot be reported in a timely manner for each path
Solution Approach 1:
The patent segments the measurement reporting process by path identifier. Each path's measurement results are reported separately in result packets that include path identifiers, allowing precise measurement reporting for each path while maintaining multiple concurrent paths for high bandwidth utilization.
Solution Approach 2:
The patent implements periodic measurement reporting where the first network node sends result packets at regular intervals to the second network node. This periodic action ensures timely measurement reporting for each path while maintaining continuous multi-path operation for sustained high throughput.
2Loss of time
If measurement results for multiple paths are aggregated into single reports, then reporting frequency is reduced, but measurement reporting precision deteriorates due to loss of path-specific timing information
Solution Approach 1:
The patent segments measurement results by including path identifiers in each result packet. This allows path-specific measurement data to be transmitted separately, preserving timing information for each path while enabling efficient batch reporting when multiple paths have available results.
Solution Approach 2:
The patent merges multiple path's measurement results into single result packets when they are ready, improving efficiency. The second network node can process multiple path measurements simultaneously while maintaining the ability to analyze each path's timing characteristics separately through the included path identifiers.
3Reliability
If the first network node waits for all paths to complete measurements before reporting, then reporting completeness is improved, but reporting timeliness deteriorates
Solution Approach 1:
The patent implements periodic reporting where the first network node sends result packets at predetermined intervals regardless of whether all paths have completed measurements. This ensures timely reporting while the periodic nature maintains reliability by continuously updating the second network node with available measurement data.
Solution Approach 2:
The patent prepares result packets in advance with path identifier fields and measurement data structures ready. When measurement data becomes available for any path, it can be immediately packaged and sent, eliminating waiting time while maintaining reporting completeness through continuous periodic updates.
Data Source
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AI summary
This application provides a measurement reporting method. The method is performed in a communication system including a first network node and a second network node. A plurality of paths are configured for one tunnel between the first network node and the second network node. The method includes: receiving a first measurement packet, where the first measurement packet is used to indicate the first network node to report measurement results; and sending a first result packet to the second network node, where the first result packet includes a result packet corresponding to a measurement result of each of the plurality of paths in a first time interval, and the first result packet is used to indicate the measurement result of each of the plurality of paths in the first time interval.