Nested Conditional Configuration for NR Mobility Signaling

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Solution Overview

Problem

Conditional mobility approaches in New Radio (NR) systems, while improving mobility robustness, can increase signaling overhead and delay mobility, particularly in multi-connectivity scenarios.

Innovation Solution

Implementing a nested conditional configuration where a wireless device applies an outer conditional configuration upon detecting an outer trigger condition and an inner conditional configuration only upon fulfilling both the outer and inner trigger conditions, optimizing monitoring and measurement processes to reduce signaling overhead and delay.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conditional mobility is implemented with separate outer and inner conditional configurations, then mobility robustness is improved, but signaling overhead increases

Engineering Contradiction:

Improvemobility robustnessVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The patent applies nesting by placing the inner conditional configuration inside the outer conditional configuration structure. The inner configuration is only activated and evaluated when the outer trigger condition is fulfilled, allowing both configurations to be transmitted in a single control message while reducing processing overhead by avoiding unnecessary evaluation of the inner configuration when the outer condition is not met.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Reliability

If the wireless device monitors both outer and inner trigger conditions continuously, then mobility robustness is improved, but processing complexity and unnecessary measurements increase

Engineering Contradiction:

Improvemobility robustnessVSAvoidprocessing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by having the wireless device evaluate the outer trigger condition first before initiating monitoring or measurement of the inner trigger condition. This sequential evaluation approach ensures that the device only performs complex measurements when necessary, reducing processing complexity while maintaining robust mobility through comprehensive condition monitoring when activated.

Inventive Principle:

Principle #10Preliminary action

3Ease of operation

If separate control messages are used for outer and inner conditional configurations, then configuration clarity is improved, but signaling overhead and mobility delay increase

Engineering Contradiction:

Improveconfiguration clarityVSAvoidmobility delay

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent merges the outer and inner conditional configurations into a single control message structure. This allows the network to provide both configurations simultaneously in one signaling event, reducing the time between configuration receipt and mobility procedure execution. The nested structure within the single message maintains clear organization and activation logic while eliminating the delays associated with sequential message transmission.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250344126A1Conditional Configuration in a Wireless Communication Network

Publication Date: 2025.11.06 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

A wireless device (16) receives a control message (26) that indicates a nested conditional configuration (28). The nested conditional configuration (28) includes an outer conditional configuration (28-1) and an inner conditional configuration (28-2). The wireless device (16) is to apply the outer conditional configuration (28-1) if the wireless device (16) detects fulfillment of an outer trigger condition. The wireless device (16) is to apply the inner conditional configuration (28-2) if the wireless device (16) detects fulfillment of both the outer trigger condition and an inner trigger condition.