Carrier Prioritization for Wireless Measurement Accuracy

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Solution Overview

Problem

In wireless networks, increasing the number of carriers monitored by user equipment leads to decreased measurement accuracy, longer cell detection times, and reduced mobility robustness due to limited time for measurements during measurement gaps.

Innovation Solution

User equipment prioritizes high-priority carriers for measurement during measurement gaps and performs lower-priority carrier measurements during inactive periods or idle mode, allowing for relaxed performance requirements on additional carriers beyond the initial three.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the user equipment monitors more carriers during measurement gaps, then the number of monitored carriers increases, but the measurement accuracy decreases and cell detection time increases

Engineering Contradiction:

Improvenumber of monitored carriersVSAvoidmeasurement accuracy

Core Design Contradiction:

Quantity of substanceVSMeasurement precision

Solution Approach 1:

The patent segments carriers into high-priority and low-priority groups. High-priority carriers are monitored during measurement gaps with full measurement accuracy, while low-priority carriers are monitored during inactive periods with relaxed performance requirements. This segmentation resolves the contradiction by allowing more carriers to be monitored overall while maintaining high measurement accuracy for critical carriers.

Inventive Principle:

Principle #1Segmentation

2Quantity of substance

If the user equipment monitors more carriers during measurement gaps, then the number of monitored carriers increases, but the cell detection time increases

Engineering Contradiction:

Improvenumber of monitored carriersVSAvoidcell detection time

Core Design Contradiction:

Quantity of substanceVSLoss of time

Solution Approach 1:

The patent divides carrier monitoring into two time segments: measurement gaps for high-priority carriers and inactive periods for low-priority carriers. This temporal segmentation allows the system to monitor more carriers overall without extending the critical cell detection time for high-priority carriers, as low-priority carrier monitoring occurs during otherwise unused time periods.

Inventive Principle:

Principle #1Segmentation

3Quantity of substance

If the user equipment monitors more carriers, then the number of monitored carriers increases, but the mobility robustness decreases

Engineering Contradiction:

Improvenumber of monitored carriersVSAvoidmobility robustness

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The patent segments carrier monitoring priorities to ensure that high-priority carriers essential for mobility robustness are monitored with high accuracy during measurement gaps, while additional low-priority carriers are monitored with relaxed requirements during inactive periods. This maintains mobility robustness for critical carriers while enabling expanded carrier monitoring capacity.

Inventive Principle:

Principle #1Segmentation

4Quantity of substance

If the user equipment performs measurements on all carriers during measurement gaps, then comprehensive coverage is achieved, but the measurement time for each carrier decreases

Engineering Contradiction:

Improvenumber of carriers measuredVSAvoidmeasurement time per carrier

Core Design Contradiction:

Quantity of substanceVSDuration of action of moving object

Solution Approach 1:

The patent segments the measurement task by carrier priority and time period. High-priority carriers receive full measurement time during measurement gaps, while low-priority carriers are measured during inactive periods with relaxed time requirements. This segmentation allows comprehensive carrier coverage while maintaining adequate measurement time for critical carriers.

Inventive Principle:

Principle #1Segmentation

5Measurement precision

If the user equipment monitors high-priority carriers during measurement gaps, then measurement accuracy for high-priority carriers is maintained, but low-priority carrier monitoring is inhibited during gaps

Engineering Contradiction:

Improvemeasurement accuracy for high-priority carriersVSAvoidnumber of carriers monitored during measurement gap

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent segments carrier monitoring by priority level and time period. During measurement gaps, only high-priority carriers are monitored to ensure adequate measurement time and accuracy. During inactive periods, low-priority carriers are monitored. This segmentation maintains high measurement accuracy for critical carriers while achieving comprehensive carrier monitoring across different time periods.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS10004012B2Special handling of low priority cells

Publication Date: 2018.06.19 NOKIA TECHNOLOGIES OY

AI summary

Methods and apparatus, including computer program products, are provided low priority cells. In one aspect there is provided a method, which may include performing, by a user equipment, monitoring of at least a second carrier during times not associated with measurement gaps, when the second carrier is designated as a low priority carrier.