Carrier Specific Scaling Factor Calculation Outside Measurement Gap
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Solution Overview
Problem
Current communication protocols, particularly in NR systems, do not support gap-less measurement reporting for inter-system measurements, leading to limitations in calculating the carrier specific scaling factor (CSSF) outside a measurement gap, which affects mobility management and measurement precision.
Innovation Solution
A method for calculating the CSSF outside a measurement gap is introduced, allowing for gap-less service frequency inter-system and non-service frequency inter-system measurements by allocating measurement opportunities between searchers, reducing measurement delays and improving precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal device strictly implements the existing protocol for calculating CSSF considering only intra-frequency and inter-frequency measurements, then the protocol compliance is maintained, but the inter-system measurement result cannot be reported within the measurement delay
Solution Approach 1:
The patent changes the calculation parameters of CSSF by extending the measurement object scope to include inter-system measurements and adjusting the measurement opportunity allocation ratios. This allows the terminal to calculate CSSF values that account for inter-system measurement requirements, enabling timely reporting within the measurement delay while maintaining protocol compliance through proper parameter configuration.
2Adaptability or versatility
If measurement opportunities are allocated to multiple measurement types including inter-system measurement, then the measurement coverage is improved, but the calculation complexity of CSSF increases
Solution Approach 1:
The patent segments the measurement opportunity allocation by defining different measurement types (intra-frequency, inter-frequency, inter-system) with distinct allocation ratios. The CSSF calculation is segmented into separate components for each measurement type, allowing the terminal to calculate and manage each segment independently. This reduces overall calculation complexity while maintaining comprehensive measurement coverage.
Solution Approach 2:
The patent creates a universal CSSF calculation framework that can handle multiple measurement types through a unified allocation ratio mechanism. The same basic calculation methodology is applied universally across different measurement types by adjusting the allocation ratios, simplifying the overall system while maintaining versatility.
3Speed
If the terminal device performs gap-less inter-system measurement, then the measurement speed is improved, but the measurement resource allocation becomes more complex
Solution Approach 1:
The patent implements dynamic measurement opportunity allocation where the allocation ratios for different measurement types can be adjusted based on current network conditions and measurement priorities. This dynamic approach enables gap-less inter-system measurement by flexibly allocating resources in real-time, improving measurement speed while managing resource allocation complexity through adaptive rather than static configurations.
Data Source
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AI summary
This application provides a method for calculating a carrier specific scaling factor and a communication apparatus. In an EN-DC scenario, a terminal device receives configuration information, sent by a network device, of an NR frequency, that is of service frequency inter-system measurement, non-service frequency inter-system measurement, PSCC intra-frequency measurement, SCC intra-frequency measurement, and inter-frequency measurement, where the service frequency inter-system measurement, the non-service frequency inter-system measurement, the PSCC intra-frequency measurement, the SCC intra-frequency measurement, and the inter-frequency measurement do not need to be supported by an MG, and the terminal device calculates a CSSF outside the MG of each to-be-measured NR frequency in all measurement types. Therefore, a CSSF of NR inter-system measurement may be included in calculation of the CSSF outside the MG, to avoid a case in which the terminal device cannot report a measurement result of inter-system measurement within a measurement delay.