Reference Signal Indicator for Wireless Measurement Configuration
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Solution Overview
Problem
In 3GPP LTE systems, there is a need for configuring measurement reports for Discovery Reference Signals (DRS) separately from Cell-Specific Reference Signals (CRS), as existing methods cannot distinguish between measurement results from CRS and DRS, leading to unclear reporting of measurement events.
Innovation Solution
A method and apparatus for configuring measurements in a wireless communication system, where a user equipment (UE) receives a reference signal indicator to determine whether a measurement report triggering event is satisfied using measurement results based on the indicated reference signal, allowing for separate configuration and reporting of CRS and DRS measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement reports are configured using both CRS and DRS without distinction, then the measurement coverage is comprehensive, but the measurement report triggering event becomes unclear and inaccurate
Solution Approach 1:
The patent segments the measurement configuration by introducing a separate indicator field that distinguishes between CRS-based measurements and DRS-based measurements. This segmentation allows the measurement report triggering events to be evaluated independently for each reference signal type, thereby improving measurement report accuracy while maintaining manageable configuration complexity through structured separation.
2Loss of information
If separate measurement configuration for CRS and DRS is implemented, then the measurement report triggering event clarity is improved, but the signaling overhead increases
Solution Approach 1:
The patent merges the measurement configuration for CRS and DRS into a unified framework by using a common indicator field within the measurement report triggering event configuration. This merging approach allows both reference signal types to be configured and evaluated within the same measurement event structure, reducing signaling overhead while maintaining clear distinction between CRS and DRS measurements through the indicator mechanism.
Data Source
AI summary
A method and apparatus for configuring measurements in a wireless communication system is provided. A user equipment (UE) receives a reference signal (RS) indicator from a network, and evaluates whether a measurement report triggering event is satisfied by only using a measurement result based on a RS indicated by the RS indicator. The RS indicator may indicate which RS is used for reporting the measurement result. The RS indicator may indicate a cell-specific reference signal (CRS) or a discovery reference signal (DRS).