5G Service Invocation Flow with Embedded Downstream Call Results

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Solution Overview

Problem

The service atomization design of the 5G core network complicates the service processing procedure by increasing the number of service process steps and interactions.

Innovation Solution

The provider of a first service includes service invocation information or result for associated second services in its response to the service consumer, optimizing the service processing logic and reducing complexity by omitting unnecessary service discovery and invocation logic.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If service atomization design is adopted in 5G core network, then service independence and reusability are improved, but service processing procedure complexity increases

Engineering Contradiction:
Improveservice independence and reusabilityVSAvoidservice processing procedure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by having the service provider perform service invocation in advance and include the invocation result in the service response. Specifically, the service provider invokes the second service before the service consumer requests it, and returns the invocation result (such as subscription data change notification) along with the first service response. This eliminates the need for the service consumer to perform additional service discovery and invocation operations, thereby reducing service processing procedure complexity while maintaining service independence and reusability.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If service discovery and invocation operations are performed separately, then service processing completeness is ensured, but service processing steps increase

Engineering Contradiction:
Improveservice processing completenessVSAvoidnumber of service processing steps
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies merging by combining multiple service operations into a single integrated process. The service provider performs both the first service processing and the second service invocation, then merges these operations by including the second service invocation result directly in the first service response. This allows the service consumer to obtain all necessary information in one interaction, ensuring service processing completeness while reducing the number of service processing steps from multiple separate operations to a single consolidated operation.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4040729B1Service call method and network device
Publication Date: 2026.03.18 CHINA MOBILE COMM GRP CO LTD
  • EP4040729B1 patent drawingFigure 1~3
  • EP4040729B1 patent drawingFigure 4
  • EP4040729B1 patent drawingFigure 5~6

AI summary

A service invocation method and a network device are provided. The method applied to a service provider side includes: receiving a service request for a first service by a provider of the first service, the service request being sent by a service consumer; sending a service response for the first service by the provider of the first service to the service consumer, wherein the service response for the first service includes service invocation information or a service invocation result of at least one second service associated with the first service, the service invocation information is configured to instruct the service consumer to invoke the second service.