RMSI CORESET Configuration via Dynamic RB Offset Selection
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Solution Overview
Problem
Current methods for indicating a common CORESET of Remaining Minimum System Information (RMSI) in a physical broadcast channel lack network configuration flexibility due to fixed resource block (RB) offsets, which vary by band and subcarrier spacing, limiting adaptability.
Innovation Solution
The method involves adding time-frequency indication information to a synchronization signal block (SSB) to query a pre-stored correlation for extended minimum sets of RB offsets, allowing selection and inclusion of an offset index to enhance configuration flexibility, enabling the UE to search for the CORESET of RMSI in a corresponding frequency domain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed RB offsets are used for indicating CORESET of RMSI, then the indication method is simple, but the network configuration flexibility is poor
Solution Approach 1:
The patent applies dynamics by making the RB offset configuration adjustable rather than fixed. The base station can dynamically select from multiple RB offset values based on different bands and subcarrier spacings, allowing the system to adapt to varying network conditions while maintaining a standardized indication mechanism through the PBCH.
Solution Approach 2:
The patent changes the parameter of RB offset from a fixed value to a selectable set of values. By defining multiple possible RB offset values and allowing the base station to choose the appropriate one based on band and subcarrier spacing, the system achieves greater configuration flexibility without fundamentally altering the indication method structure.
2Measurement precision
If different minimum sets of RB offsets are used for different bands, then the accuracy is improved, but the complexity of managing multiple sets increases
Solution Approach 1:
The patent creates a universal indication mechanism that works across different bands and subcarrier spacings. The same PBCH indication method is used universally, but it can select from band-specific RB offset values, combining the simplicity of a universal method with the precision of band-specific optimization.
Solution Approach 2:
The patent applies local quality by having different RB offset values optimized for specific bands and subcarrier spacings while using a unified indication approach. Each band has its own optimized RB offset set, but the overall system maintains consistency through the standardized PBCH indication mechanism.
3Adaptability or versatility
If extended minimum sets with target number of RB offsets are used, then the configuration flexibility is improved, but the information processing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-defining extended minimum sets of RB offsets with target numbers for different bands and subcarrier spacings. This preparation work is done in advance, allowing the base station to simply select from pre-configured options rather than performing complex calculations in real-time, thus reducing online processing complexity.
Data Source
AI summary
An information indication method includes: adding time-frequency indication information configured for a CORESET of RMSI to a PBCH of a SSB; if the time-frequency indication information indicates the CORESET of RMSI and the SSB are multiplexed in time division, querying a pre-stored correlation according to a present band, an SCS of the SSB and an SCS of the CORESET of RMSI to obtain an extended RB offset minimum set corresponding to the present band; an RB offset is selected from the obtained extended RB offset minimum set, and adding an offset index of the selected RB offset to the time-frequency indication information; and sending the SSB comprising the time-frequency indication information to UE in a beam scanning manner.