Service Node Fault Detection via Echo Request Mediation
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Solution Overview
Problem
Existing fault detection methods in communication networks, such as GPRS and UMTS, often lead to misjudgments where both nodes think the peer is faulty even if they are not, due to interrupted communication links, resulting in unreliable fault detection.
Innovation Solution
A method and system where a service request node expands and transmits an echo request message to service nodes in a pool, carrying results of previous period fault detection, allowing each service node to determine its own and other nodes' fault indication states, thereby improving detection reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a communication link between two GGSNs is interrupted, then both GGSNs detect no response from the peer, but this leads to misjudgment where both nodes think the peer is faulty even though they are not
Solution Approach 1:
The patent introduces a service request node as an intermediary to perform fault detection on service nodes. Instead of service nodes detecting faults in each other directly (which causes misjudgment when links are interrupted), the service request node acts as a neutral mediator that can objectively determine whether service nodes are faulty by sending detection messages through multiple paths and analyzing responses.
Solution Approach 2:
The patent segments the fault detection function from the service node itself and assigns it to a separate service request node. This separation allows the detection function to be independent of the service nodes' own state, eliminating the circular dependency that causes misjudgment when communication links are interrupted.
2Reliability
If multiple communication nodes are deployed to improve reliability and processing capability, then network robustness increases, but the complexity of fault detection increases
Solution Approach 1:
The patent merges the fault detection function into the existing service request node that already performs service requests. By combining fault detection with the existing service request mechanism, the system avoids adding separate complex detection infrastructure while multiple service nodes continue to provide redundancy and improved reliability.
Data Source
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AI summary
Embodiments of the present invention provide a method, node, and system for determining a fault indication state, and relate to the field of communications. The method includes: receiving results of detecting whether each service node in a service node pool is faulty transmitted by service request nodes; and determining fault indication states of a service node itself and other service nodes according to the results of detecting; or expanding an echo request message which carries a result of detecting, by a service request node itself, whether each service node in a service node pool is faulty during a previous period of a current period; and transmitting the echo request message to each service node at the beginning of the current period to enable each service node to determine fault indication states of a service node itself and other service nodes according to the result of detecting. The embodiments of the present invention further include a service request node and a service node, and a system formed of the two. According to the foregoing solutions of the present invention, reliability of service node fault detection is improved.