Diameter Connection Recovery via Watchdog-Based Peer Reset

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Solution Overview

Problem

The delay in restoring Diameter connectivity due to client failures, restarts, or switchover in telecommunications networks leads to service impacting issues like call drops and accounting failures, particularly in high availability configurations.

Innovation Solution

Implementing a method where the Diameter server probes the connection by sending a Diameter watchdog request upon receiving a capabilities exchange request from a client, and if the client responds with a reset message, the server immediately cleans up the old peer state machine and establishes a new connection, reducing the delay in connectivity restoration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional methods (C-sections, forceps, vacuum extractors) are used to deliver babies in shoulder dystocia, then delivery can be achieved, but these methods are invasive, time-consuming, and may cause serious injuries to mother and child

Engineering Contradiction:

Improvedelivery successVSAvoidinvasiveness

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces traditional mechanical surgical instruments (forceps, vacuum extractors) with a non-invasive mechanical maneuver (McRoberts maneuver) that uses maternal hip flexion to rotate the fetal shoulders and resolve dystocia

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The maternal anatomy itself is utilized to resolve the dystocia through the McRoberts maneuver, where flexing the maternal hips uses the mother's own body structure to rotate and deliver the fetal shoulders without external surgical instruments

Inventive Principle:

Principle #25Self-service

2Reliability

If traditional methods are used for shoulder dystocia delivery, then delivery can be achieved, but the procedure takes significant time and requires specialized training

Engineering Contradiction:

Improvedelivery successVSAvoiddelivery time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces time-consuming surgical procedures with a rapid mechanical maneuver (McRoberts) that can be performed immediately, reducing delivery time and eliminating the need for complex surgical intervention

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If traditional surgical methods are used for shoulder dystocia, then delivery can be achieved, but serious injuries may occur to mother and child

Engineering Contradiction:

Improvedelivery successVSAvoidinjury risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces invasive mechanical surgical instruments that cause tissue trauma with a non-invasive manual maneuver that uses maternal hip flexion to safely rotate fetal shoulders, eliminating surgical instrument-related injuries

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The maternal anatomy is used as the intervention tool itself, avoiding external instruments that could cause injury to the mother or fetus during the delivery process

Inventive Principle:

Principle #25Self-service

Data Source

PatentEP4410049B1Methods, systems, and computer readable media for restoration of diameter connectivity

Publication Date: 2026.05.06 ORACLE INT CORP

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AI summary

Methods, systems, and computer readable media for restoration of Diameter connectivity. An example method includes accepting a first Diameter connection with a Diameter client having a Diameter identifier. The method includes receiving a request to establish a new Diameter connection with the Diameter identifier. The method includes holding the request to establish a new Diameter connection for a specified time limit, and, while holding the request, probing the first Diameter connection to determine whether the first Diameter connection has been broken. In response to determining that the first Diameter connection has been broken, the method includes aborting the first Diameter connection and accepting a second Diameter connection with the Diameter client having the Diameter identifier.