Terminal Device Measurement Mode Switching for CCA Carriers

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Solution Overview

Problem

Existing power saving solutions for measurements in communication systems are not suitable for carriers subject to clear channel assessment (CCA), particularly in scenarios where relaxed measurement criteria are applied.

Innovation Solution

A method where a terminal device determines whether to operate under a first mode of operation (MO) or a second MO based on relaxed measurement criteria (RMC), with at least one criterion associated with the result of the CCA procedure. The device then performs measurements accordingly, allowing for improved power saving and measurement performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If existing power saving solutions for measurements are applied, then energy consumption is reduced, but they are not suitable for carriers subject to CCA and fail to provide effective power saving under relaxed measurement criteria

Engineering Contradiction:

Improvepower savingVSAvoidsuitability for CCA carriers

Core Design Contradiction:

Use of energy by moving objectVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic adjustment of measurement parameters based on CCA results and relaxed measurement criteria. The terminal device dynamically switches between different measurement modes (first MO with relaxed criteria and second MO with standard criteria) depending on channel conditions and CCA outcomes, making the power saving solution adaptable to varying carrier types and measurement requirements rather than using a static approach

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes measurement parameters such as measurement frequency, measurement timing configuration (SMTC) occasions, and measurement criteria based on CCA results and the applied RMC. By adjusting these parameters dynamically, the system achieves effective power saving on CCA carriers while maintaining measurement accuracy when needed, resolving the incompatibility of existing solutions with CCA carriers

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If standard measurement criteria are applied, then measurement accuracy is maintained, but power consumption increases and performance is suboptimal under relaxed conditions

Engineering Contradiction:

Improvemeasurement accuracyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent applies partial measurement action by using relaxed measurement criteria (RMC) that require fewer measurement resources and less frequent measurements when channel conditions permit. The terminal device performs measurements at reduced intensity or frequency under RMC, achieving adequate measurement accuracy for many scenarios while significantly reducing power consumption compared to full-standard measurements

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The system dynamically switches between standard measurement criteria and relaxed measurement criteria based on CCA results and channel conditions. When CCA succeeds and conditions are favorable, relaxed criteria are applied to save power; when CCA fails or conditions deteriorate, standard criteria are restored to maintain measurement accuracy, creating an adaptive measurement system

Inventive Principle:

Principle #15Dynamics

3Use of energy by moving object

If relaxed measurement criteria are applied, then power saving is improved, but measurement reliability may be compromised on CCA carriers without proper adaptation

Engineering Contradiction:

Improvepower savingVSAvoidmeasurement reliability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent incorporates feedback mechanisms where the terminal device monitors CCA results, measurement outcomes, and channel conditions. Based on this feedback, the device adjusts its measurement strategy - switching between relaxed and standard measurement criteria, adjusting measurement timing configurations, and adapting to CCA success or failure patterns. This feedback loop ensures measurement reliability is maintained while maximizing power saving opportunities

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent prepares for potential measurement reliability issues by having pre-configured fallback mechanisms. When using relaxed measurement criteria on CCA carriers, the system has predetermined alternative measurement configurations and timing settings ready to switch to if measurement reliability deteriorates or CCA failures increase, providing a cushion against reliability problems before they occur

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS20250039708A1Performing Measurements According to Relaxed Criteria

Publication Date: 2025.01.30 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

Methods and apparatuses for control of measurements are disclosed. According to an embodiment, a terminal device obtains (202) information about at least one relaxed measurement criterion, RMC. The terminal device determines (204) whether first criteria associated with a first mode of operation, MO, or second criteria associated with a second MO are satisfied, based at least on the obtained information. Measurements under the first MO are less stringent than measurements under the second MO. At least one criterion in at least one of the first criteria and the second criteria is associated with a result of clear channel assessment, CCA, procedure in at least one cell. The terminal device uses (206) a result of the determination for performing one or more operational tasks.