SCTP Multi-Homing Path Selection via Quality Evaluation
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Solution Overview
Problem
The existing SCTP multi-homing path selection mechanism does not adequately consider network quality, leading to suboptimal data transmission speed and quality, as it relies on path availability rather than quality evaluation.
Innovation Solution
A method and apparatus for SCTP multi-homing path selection that calculates and compares quality evaluation values of paths, selecting the path with the highest quality for data transmission, triggered by factors such as timer timeout, network congestion, or preset retransmissions, and using evaluation functions that incorporate packet loss rate, time delay, and other quality metrics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If path switching is performed only when a certain number of times of continuous message retransmissions is reached according to the protocol requirement, then the protocol compliance is maintained, but the data transmission speed and quality are affected when network quality deteriorates
Solution Approach 1:
The patent implements dynamic path selection by introducing a quality evaluation mechanism that continuously monitors network conditions (packet loss rate, time delay) and adjusts path selection in real-time. This allows the system to transition from static protocol-based switching to dynamic quality-based switching, resolving the contradiction between protocol compliance and transmission efficiency
Solution Approach 2:
The patent changes the selection parameter from binary path availability (reachable/unreachable) to continuous quality metrics (packet loss rate, time delay, quality evaluation values). By transforming the decision parameter from discrete to continuous, the system can make finer-grained path selection decisions that maintain protocol compliance while optimizing transmission speed
2Stability of the object's composition
If the preferred path is switched back immediately when reachable (after receiving confirmed message or heartbeat response), then the default path preference is maintained, but the network quality of the preferred path may not be fully restored causing continued transmission issues
Solution Approach 1:
The patent implements a feedback mechanism where path quality is continuously evaluated using quality evaluation functions that consider packet loss rate, time delay, and other network conditions. The system only switches back to the preferred path when quality evaluation confirms it is truly optimal, preventing premature switching that would compromise transmission reliability
Solution Approach 2:
The patent performs preliminary quality evaluation before switching paths back. Instead of immediately switching when the preferred path becomes reachable, the system first evaluates whether the quality metrics meet switching criteria, ensuring that path switching decisions are made in advance with sufficient quality verification
Data Source
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AI summary
The present disclosure discloses a method for multi-homing path selection of a stream control transmission protocol (SCTP). The method includes the following steps of: starting quality evaluation of paths; calculating a quality evaluation value of each path; comparing the quality evaluation value of each path; and selecting a path with the highest quality evaluation value to transmit a data message. The present disclosure also discloses an apparatus for multi-homing path selection of an SCTP. By adopting the method and the apparatus, a network selects the path with the highest quality evaluation value to transmit a data message. As long as path faults affect the transmission efficiency, other path with better quality is selected for transmission, thus the capability of the network of dealing with all kinds of path faults can be improved, and the data transmission speed and quality are further improved.