Inter-RAT Measurement Reporting Thresholds
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Solution Overview
Problem
Current measurement reporting protocols in wireless communications, such as 3GPP TS 45.008, face challenges in comparing and reporting signal levels and qualities across different radio access technologies (RATs) due to limited message space and differing measurement units, leading to meaningless comparisons and incomplete reporting of neighboring cells.
Innovation Solution
Implementing a reporting threshold for each RAT, allowing user equipment to compare measurement results relative to this threshold, and using a scaling factor to normalize dynamic ranges, enabling more meaningful comparisons and selective reporting of valid cells within limited message capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the user equipment reports all valid inter-RAT neighboring cells, then the completeness of measurement reporting is improved, but the message capacity is exceeded
Solution Approach 1:
The patent extracts only the most relevant measurement information (serving cell and selected neighboring cells) from the complete set of valid inter-RAT neighboring cells, reporting only those that meet specific criteria rather than all available measurements
Solution Approach 2:
The patent implements partial reporting by selectively including only certain neighboring cells in the measurement report based on comparison values and thresholds, rather than reporting all valid cells, thus adapting the reporting quantity to available message capacity
2Ease of operation
If the user equipment compares measurement values from different RATs directly, then the reporting decision process is simplified, but the comparison accuracy deteriorates due to different measurement types and units
Solution Approach 1:
The patent transforms measurement values from different RATs into a common comparison framework by applying RAT-specific parameters (Qrxlevmin, Qqualmin, Qoffset) to normalize values with different units and types, enabling accurate cross-RAT comparisons
Solution Approach 2:
The patent introduces an intermediary comparison mechanism that uses serving cell measurements as a reference point and applies offset parameters to bridge the gap between different measurement types (RSCP, RSRP, Ec/No, RSRQ), allowing meaningful comparisons across RATs
Data Source
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AI summary
Methods and apparatus, including computer program products, are provided for measurement reporting In one aspect there is provided a method. The method may include receiving, at a user equipment from a base station, a first message providing one or more parameters for measurement reporting, selecting one or more first cells from among a plurality of cells, wherein the selecting is based on at least one comparison value determined based on at least one reporting threshold defined for at least one of a plurality of radio access technologies being used by at least one of the plurality of cells, wherein the at least one reporting threshold is further defined based on at least one measurement quantity used for the at least one of a plurality of radio access technologies, and sending, by the user equipment to the base station, one or more measurement results for the selected one or more first cells, the one or more measurement results included m the measurement report message, when the measurement report message lacks capacity to report valid measurement results for each of the plurality of cells, wherein the one or more results are included based on the at least one comparison value including the at least one reporting threshold. Related apparatus, systems, methods, and articles are also described.