Tunnel Management Node Failure Identification via Response Message

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Solution Overview

Problem

In existing communications networks, when a tunnel management request fails, the initiating node cannot determine which node is responsible for the failure, hindering effective processing and error handling.

Innovation Solution

A method and apparatus that include sending a response message with node information when a tunnel management request fails, allowing the initiating node to identify the failing node and perform appropriate processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If a cause value is used to indicate the processing result of the tunnel management request, then the initiating node can know whether the request succeeds or fails, but the initiating node cannot determine which node has caused the failure

Engineering Contradiction:
Improvefailure cause informationVSAvoiderror handling capability
Core Design Contradiction:
Loss of informationVSEase of operation

Solution Approach 1:

The patent introduces an intermediary field in the response message that carries the identifier of the node causing the failure. This intermediary element bridges the gap between the cause value and the initiating node, enabling the initiating node to identify which specific node caused the failure without requiring complex message routing or additional communication steps.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent implements a feedback mechanism where the responding node provides comprehensive failure information including both the cause value and the identifier of the failing node. This enhanced feedback allows the initiating node to not only know that the request failed but also to identify which node caused the failure, enabling more precise error handling and processing.

Inventive Principle:
Principle #23Feedback

2Device complexity

If the response message includes only a cause value, then the message structure remains simple, but the initiating node cannot perform differentiated processing for failures caused by different nodes

Engineering Contradiction:
Improvemessage structureVSAvoiderror processing efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent segments the failure information into two distinct components: the cause value that indicates the type of failure, and the node identifier that specifies which node caused the failure. This segmentation allows the message structure to remain organized and manageable while providing sufficient information for the initiating node to perform differentiated processing based on both the cause and the responsible node.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary field in the response message that carries the identifier of the node causing the failure. This intermediary element bridges the gap between the cause value and the initiating node, enabling the initiating node to identify which specific node caused the failure without requiring complex message routing or additional communication steps.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS8938640B2Tunnel management method, tunnel management apparatus, and communications system
Publication Date: 2015.01.20 NOKIA TECHNOLOGIES OY
  • US8938640B2 patent drawing
  • US8938640B2 patent drawing
  • US8938640B2 patent drawing

AI summary

The present invention relates to communications technologies and discloses a tunnel management method, a tunnel management apparatus, and a communications system so that a node that causes failure of a tunnel management request can be determined. According to the present invention, a response returned by a tunnel management node to an initiating node includes not only a cause value of tunnel management request failure but also information of the node that causes failure of the tunnel management request, so that the initiating node can find the node that causes failure of the tunnel management request and determine the error checking direction. The present invention is applicable to network devices in a communications network.