SSB Offset Indication via TDM Multiplexing for CORESET Search
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for indicating the Common Control Resource Set (CORESET) for Remaining Minimum System Information (RMSI) in a Physical Broadcast Channel (PBCH) are inefficient, particularly when the Subcarrier Spacing (SCS) of the Synchronization Signal Block (SSB) is less than that of the CORESET, leading to wasteful bit usage for offset representation.
Innovation Solution
The method involves using time-frequency multiplexing indication information to indicate Time Division Multiplexing (TDM) between the CORESET for RMSI and the SSB, allowing the offset value between the PRB grids to be conveyed, reducing bit overhead by indicating this information through the PBCH in a beam scanning manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If 1 bit is configured to represent two probable Subcarrier Spacings (SCSs) of the RMSI, then the indication information length is reduced, but the manufacturing precision of the offset representation deteriorates
Solution Approach 1:
The patent segments the offset indication into two parts: a coarse indication (1 bit for TDM/FDM selection) and a fine indication (additional bits for precise offset value when TDM is selected). This segmentation allows the system to use minimal bits for common cases while providing precise offset representation when needed, resolving the contradiction between bit overhead and precision.
Solution Approach 2:
The patent applies partial action by only providing detailed offset indication when necessary (when TDM is selected and SCS conditions are met). For other cases, a simplified indication suffices. This partial provision of information reduces overall bit overhead while maintaining precision when required.
2Measurement precision
If the offset value between PRB grids is explicitly indicated, then the searching accuracy of CORESET is improved, but the bit overhead increases
Solution Approach 1:
The offset indication is segmented into a selection part (TDM/FDM, 1 bit) and a value part (precise offset when TDM). This allows the system to achieve high searching accuracy when needed while keeping bit overhead low for cases where simplified indication suffices.
Solution Approach 2:
The patent changes the parameter of offset indication from a fixed detailed representation to a conditional representation that adapts based on multiplexing type and SCS conditions. This parameter change allows the system to optimize between accuracy and overhead dynamically.
3Adaptability or versatility
If separate indication methods are used for different SCS conditions, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The time-frequency multiplexing indication information serves multiple functions: it indicates both the multiplexing type (TDM/FDM) and conditional offset information. This multi-functionality reduces the need for separate indication mechanisms for different SCS conditions, thereby reducing complexity while maintaining adaptability.
Solution Approach 2:
The indication method is made dynamic by selecting different indication strategies based on SCS conditions and multiplexing type. The system adapts its indication approach in real-time based on the configured parameters, providing versatility without requiring multiple fixed indication systems.
Data Source
AI summary
A method for indicating information includes: whether a configured SCS of an SSB is less than an SCS of a common CORESET for RMSI corresponding to the SSB and whether time-frequency multiplexing indication information, in a PBCH of the SSB, of the CORESET for the RMSI indicates TDM of the CORESET for the RMSI and the SSB are determined; responsive to that the SCS of an SSB is less than the SCS of the CORESET for the RMSI, and the time-frequency multiplexing indication information of the CORESET of the RMSI indicates TDM of the CORESET for the RMSI and the SSB, an offset value between the PRB grid of the CORESET for the RMSI and the PRB grid of the SSB is indicated through the time-frequency multiplexing indication information; and the SSB carrying the time-frequency multiplexing indication information is sent to UE in a beam scanning manner.