Idle-State UE Measurements for Logged MDT Reporting
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in performing minimization of drive tests (MDT) due to the lack of early measurements in idle or inactive states, which hinders network optimization and dual connectivity carrier aggregation.
Innovation Solution
User equipment (UE) is configured to perform early measurements in idle or inactive states, receiving configurations from a base station to generate idle mode measurement reports and MDT reports, enabling logging for network optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UE performs measurements only in connected state for MDT reporting, then measurement accuracy is improved, but network optimization efficiency deteriorates due to lack of early measurements in idle state
Solution Approach 1:
The patent applies preliminary action by enabling the UE to perform measurements in idle state before actual connectivity is established. The network can configure measurement objects, measurement spaces, and reporting criteria in advance, allowing the UE to log measurements during idle periods. This preliminary measurement collection enables faster network optimization decisions without requiring the UE to be in connected state continuously.
2Productivity
If UE performs measurements in idle state, then network optimization efficiency is improved, but measurement reliability deteriorates due to potential configuration errors or premature reporting
Solution Approach 1:
The patent implements feedback mechanisms where the network verifies measurement reports from idle state before accepting them for optimization. The network can validate the measurements against expected criteria, check the validity of measurement objects and spaces, and provide feedback to correct any configuration errors. This feedback loop ensures that measurements taken in idle state maintain sufficient reliability for network optimization.
Solution Approach 2:
The network performs preliminary configuration validation before the UE starts measurements in idle state. The network verifies that measurement objects, spaces, and reporting criteria are properly defined and compatible before enabling idle state measurements. This preliminary validation prevents configuration errors from compromising measurement reliability.
3Device complexity
If dual connectivity carrier aggregation is established without early measurements, then connection setup is simplified, but network performance deteriorates due to lack of measurement data for optimization
Solution Approach 1:
The patent enables preliminary measurements to be taken in idle state before dual connectivity carrier aggregation is established. The network can configure measurement objects and spaces in advance, allowing the UE to collect measurement data during idle periods. This preliminary action provides the network with valuable measurement information that can be used to optimize dual connectivity carrier aggregation performance without complicating the connection setup process.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) in a wireless communications system may perform measurements of a network while in an idle or an inactive state. The UE may receive, from a base station, an idle mode measurement configuration and a logged measurement configuration for performing measurements while the UE is in the idle state or the inactive state. The UE may determine, from the idle mode measurement configuration, that the measurements are to also be used for minimization of drive test (MDT) reporting. The UE may generate an MDT report based on the idle mode measurement configuration and the logged measurement configuration. The UE may transmit, to the base station, the MDT report based on the idle mode measurement configuration.