Idle-Mode UE Measurement Validation for Carrier Aggregation
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Solution Overview
Problem
Existing communication networks face challenges in accurately determining whether reference signal measurements performed by user equipment (UE) during RRC idle or inactive modes are valid for reporting, due to uncertainties in timing related to paging and preamble transmissions, which affects the reliability of early measurement reporting for secondary cell setup.
Innovation Solution
A communication device determines whether to include measurements in a report based on a validity time and an uncertainty time, accounting for the time duration between measurement and preamble transmission, ensuring only valid measurements are reported to the network node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If measurements are performed during RRC idle or inactive modes for early measurement reporting, then the setup speed for carrier aggregation and dual connectivity is improved, but the reliability of measurement reporting deteriorates due to timing uncertainties in paging and preamble transmissions
Solution Approach 1:
The network node provides a validity time parameter in advance to the communication device before the device performs measurements during RRC idle or inactive modes. This preliminary provision of timing criteria enables the device to pre-establish the conditions for valid measurements, ensuring reliability while maintaining fast setup speed.
Solution Approach 2:
The patent introduces dynamic timing validation by comparing the actual measurement timing against the provided validity time parameter. The communication device dynamically determines whether measurements taken during idle/inactive modes are valid based on timing relationships with paging and preamble transmissions, adapting the validation criteria to actual network conditions.
2Quantity of substance
If the communication device includes all measurements in the report, then the quantity of measurement data is improved, but the accuracy of measurement validation deteriorates due to timing uncertainties
Solution Approach 1:
The patent applies local quality by differentiating between valid and invalid measurements based on their timing characteristics. Instead of treating all measurements uniformly, the communication device evaluates each measurement individually against the validity time criteria, including only those measurements that meet the timing requirements in the final report.
Solution Approach 2:
The network node provides feedback in the form of a validity time parameter that guides the communication device's measurement selection. The device uses this feedback to determine which measurements to include, creating a closed-loop system where the network controls the quality of received measurement data through timing validation criteria.
Data Source
AI summary
There is provided a communication device comprising: means for obtaining a value for an uncertainty time, and means for performing at least one measurement on at least one reference signal. The communication device also comprises: means for determining whether to include the at least one measurement in a report based on a value for a validity time and the value for the uncertainty time, and means for, based on the determining, providing, to a network node, the report comprising the at least one measurement.