IAB SSB Measurement Timing Using SMTC3 Configuration
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively providing synchronization signal block (SSB) measurement configurations for integrated access and backhaul (IAB) systems, particularly in 6G communication systems, which require enhanced coverage and connectivity for numerous devices and services.
Innovation Solution
A method and apparatus for an integrated access and backhaul-mobile termination (IAB-MT) that receives configuration information for SSB measurement, obtains an SSB Measurement Time Configuration3 (SMTC3) list, identifies cells and SSB measurement timing, and performs SSB measurements based on the SMTC3 list, ensuring accurate synchronization signal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional SSB measurement configurations are used in IAB systems, then basic synchronization is achieved, but measurement precision and synchronization accuracy are insufficient for 6G requirements
Solution Approach 1:
The SSB measurement configuration is segmented into multiple SMTC occasions (SMTC1, SMTC2, SMTC3) with different purposes and parameters. Each SMTC occasion contains specific measurement timing information for different cell types or measurement scenarios, allowing the system to achieve high measurement precision through multiple specialized measurement opportunities rather than a single general configuration.
2Reliability
If multiple SMTC occasions are configured for different cell types, then measurement accuracy improves, but system complexity increases
Solution Approach 1:
The system dynamically selects which SMTC occasion to use based on the cell type and measurement requirements. Different SMTC occasions are activated conditionally - for example, SMTC3 is used for IAB neighbor cell measurements while SMTC1 is used for other scenarios. This dynamic selection mechanism maintains high synchronization reliability through appropriate measurement configurations without requiring the system to permanently maintain all possible configurations.
3Measurement precision
If SSB measurement timing is optimized for specific cell types, then measurement precision improves, but adaptability to different scenarios decreases
Solution Approach 1:
The SMTC configuration structure is designed to be universal and multi-functional. The same SMTC configuration framework can be applied to different cell types (serving cells, neighbor cells, IAB cells) and different measurement scenarios by simply selecting the appropriate SMTC occasion and adjusting parameters like periodicity, offset, and duration. This universal structure maintains measurement timing precision for specific scenarios while preserving adaptability across diverse 6G network configurations.
Data Source
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AI summary
The present disclosure relates to a method and apparatus for transmitting and receiving signals in a wireless communication system. According to an embodiment of the present disclosure, a terminal may receive measurement configuration information from a serving cell, identify whether a measurement object (MO) configured in the terminal is an MO corresponding to a synchronization signal block (SSB) to be measured, based on the measurement configuration information, receive at least one SSB measurement time configuration (SMTC) information among SMTC1 information and SMTC3 information, based on a measurement frequency identified through the measurement configuration information and an SSB index configured through subcarrier spacing, when the MO corresponding to the SSB to be measured is configured in the terminal, and perform SSB measurement based on the received SMTC information.