Early Measurement Reporting Using Stored Connected-Mode Measurements
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Solution Overview
Problem
User equipment (UE) transitioning from connected mode to idle mode may not have sufficient time to perform enough measurements for accurate early measurement reporting, leading to incomplete or inaccurate reporting at radio resource control (RRC) connection setup.
Innovation Solution
The UE stores connected mode measurements upon entering idle mode and transmits them during a predefined duration based on a criterion, using a timer or counter to manage the storage and reporting of these measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the UE transitions from connected mode to idle mode for early measurement reporting, then the reporting speed is improved, but the measurement accuracy deteriorates due to insufficient time to collect enough measurement samples
Solution Approach 1:
The UE performs measurements during connected mode before transitioning to idle mode and stores these measurement results. When in idle mode, the UE can immediately report the pre-collected measurement data without needing to perform new measurements, thus achieving both fast reporting and accurate measurements.
2Measurement precision
If the UE stores connected mode measurements for a predefined duration in idle mode, then the measurement accuracy is improved, but the device complexity increases due to memory management and timer mechanisms
Solution Approach 1:
The patent changes the state parameter of measurement data by introducing a validity flag or timer mechanism. The stored measurements are associated with a time validity parameter, and the UE automatically manages the storage duration using predefined timers, simplifying the complexity through standardized parameter management.
3Productivity
If the UE transmits stored connected mode measurements during RRC connection setup, then the productivity is improved by enabling faster carrier aggregation or dual connectivity setup, but the loss of information increases if the measurements are not reported in time
Solution Approach 1:
The network provides feedback to the UE regarding whether early measurement reporting is required and what measurements are needed. The UE uses this feedback to determine which stored measurements to transmit, ensuring that relevant information is reported while avoiding unnecessary transmissions. The network can request specific measurement data based on its current needs.
Data Source
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AI summary
A method and apparatus includes transitioning, by a user equipment (UE), from a connected mode to a first cell to an idle mode, The UE determines to store measurements performed by the UE in connected mode of one or more cells based upon a signal level or cell type, and stores for a predefined duration, measurements performed by the UE in connected mode of the one or more cells, upon entering the idle mode. The UE transmits, based on a criterion, during the predefined duration, the stored connected mode measurements of the one or more cells to a first apparatus in connection with connecting to the first apparatus.