SMTC Window Configuration for Accurate High-Frequency RSRP Measurement
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Solution Overview
Problem
In high-frequency range communications, the accuracy of RSRP measurement by User Equipment (UE) is compromised due to the partial exclusion of neighbor cell SSBs from the SMTC window, particularly with subcarrier spacings above 480 kHz, leading to inaccurate measurements.
Innovation Solution
The method involves receiving measurement configuration information, performing measurements based on this information, and generating measurement reports, which includes adjusting the SMTC window to accommodate higher subcarrier spacings, ensuring accurate RSRP measurements for both serving and neighbor cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the SMTC window is configured based on conventional symbol length assumptions, then the measurement configuration is simple and compatible with lower SCS, but the SSB of the neighbor cell is partially excluded from the SMTC window when SCS is 480 kHz or higher, affecting RSRP measurement accuracy
Solution Approach 1:
The patent changes the parameter of symbol length used in SMTC window configuration from the conventional value (based on SCS < 480 kHz) to a new value that accounts for the reduced symbol length at SCS ≥ 480 kHz. Specifically, the UE is configured with a first symbol length for SCS < 480 kHz and a second, shorter symbol length for SCS ≥ 480 kHz, ensuring that the SMTC window correctly captures the entire SSB duration at high SCS values while maintaining compatibility with lower SCS configurations
Solution Approach 2:
The patent segments the measurement configuration into different symbol length parameters based on SCS ranges. The system divides the frequency spectrum into two segments: one for conventional SCS (< 480 kHz) using the first symbol length, and another for high SCS (≥ 480 kHz) using the second symbol length. This segmentation allows the SMTC window to be appropriately sized for each segment, preventing SSB exclusion in the high SCS segment while maintaining simplicity in the conventional segment
2Productivity
If the symbol length is reduced for higher subcarrier spacings (480 kHz and above), then the communication bandwidth and data rate are improved, but the SSB may not be fully included in the SMTC window due to the shorter symbol duration, compromising measurement accuracy
Solution Approach 1:
The patent implements a dynamic symbol length configuration where the symbol length parameter used for SMTC window calculation is adaptively selected based on the SCS value. The system dynamically switches between the first symbol length (for SCS < 480 kHz) and the second symbol length (for SCS ≥ 480 kHz), ensuring that the SMTC window duration is always appropriate for the current operating SCS, thereby maintaining both high data rates and accurate measurements across all frequency configurations
Data Source
AI summary
There is provided a method for performing communication. The method performed by a UE and comprising: receiving measurement configuration information from a base station; and performing measurement based on the measurement configuration information; and transmitting measurement report based on the measurement.