Service Applications Influencing Core Network Data Traffic Routing

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Solution Overview

Problem

Current communication systems lack mechanisms for service applications to proactively influence data traffic routing in core networks, limiting their ability to offload data traffic from intermediate routing nodes to external networks.

Innovation Solution

Implementing a method in a mobile core network that allows service applications to register for data subscription notifications, extract data traffic routing influence information, and transmit this information to control nodes to reconfigure communication session control nodes for data traffic routing, enabling data traffic offloading.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If service applications can proactively influence data traffic routing, then network flexibility and performance are improved, but core network control complexity increases

Engineering Contradiction:

Improvenetwork flexibilityVSAvoidcontrol complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces a policy control node as an intermediary between service applications and communication session control nodes. This mediator receives routing influence information from service applications, processes it according to network policies, and translates it into actionable session control instructions, thereby enabling application influence while shielding the core control plane from direct complexity

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent segments the routing control functionality into separate components: service applications generate routing preferences, policy control nodes process and validate these preferences against network policies, and communication session control nodes execute the final routing decisions. This segmentation allows each component to focus on specific tasks, reducing overall system complexity while maintaining flexibility

Inventive Principle:

Principle #1Segmentation

2Productivity

If data traffic is offloaded from core network to external networks, then core network load is reduced, but routing control precision decreases

Engineering Contradiction:

Improvenetwork efficiencyVSAvoidrouting control precision

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The patent implements preliminary action by having service applications proactively provide routing influence information before data traffic offloading occurs. The policy control node processes this information in advance, determines appropriate routing policies, and pre-configures communication session control nodes with the necessary instructions, ensuring precise routing control is maintained even as traffic is offloaded to external networks

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11477690B2Method for influencing data traffic routing in core networks by service applications

Publication Date: 2022.10.18 ZTE CORP

AI summary

This disclosure relates to mechanisms for effectuating data traffic routing influence in a core network of a communication system by service applications outside of the core network. The mechanism may be implemented for the core network to establish communication sessions within the core network that route data traffic according to the data traffic routing influence requests from application servers. The mechanism may further be implemented for the core network to modify or reconfigure network nodes for an active existing communication session within the core network to effectuate data traffic routing influence request from the application servers.