SSB-RMSI Correspondence Indication via Beam Grouping
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Solution Overview
Problem
In 5G wireless communication systems operating at high frequency bands, there is a technical challenge in determining the correspondence between synchronization signal blocks (SSBs) and minimum system information (RMSI) without increasing bit overheads, particularly for wideband user equipment (UE) that needs to perform rate matching based on the position of RMSI.
Innovation Solution
A method and apparatus that determine a beam to be sent and generate indication information including the number of beam groups and identifiers for each beam group, where an identifier corresponding to the beam indicates the correspondence between SSBs and RMSI, allowing the UE to parse this information to determine the correct correspondence without additional bit overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If indication information is added to indicate the correspondence between SSBs and RMSI, then the UE can determine the correspondence accurately, but the bit overheads will increase
Solution Approach 1:
The patent reuses existing beam identifiers that are already present in the system for beam management purposes. These identifiers serve dual functions: they identify beams for SSB transmission and simultaneously indicate the correspondence between SSBs and RMSI. This self-service approach eliminates the need for separate indication information, thereby avoiding additional bit overheads while maintaining accurate correspondence determination at the UE side.
Solution Approach 2:
The beam identifier is designed to perform multiple functions: it identifies the beam direction for SSB transmission and concurrently indicates which RMSI corresponds to which SSB. By making the identifier universal, the patent avoids creating dedicated indication fields, thus preventing bit overhead increase while enabling the UE to determine the SSB-RMSI correspondence accurately through the same identifier it uses for beam identification.
2Adaptability or versatility
If beam grouping is implemented to manage multiple SSBs, then the system can handle wideband communications effectively, but the device complexity increases
Solution Approach 1:
The patent divides beams into multiple groups, where each beam group is associated with a specific RMSI. This segmentation allows the system to manage multiple SSBs across different beam groups efficiently. The UE can determine which beam group an SSB belongs to and identify the corresponding RMSI through the beam identifier, enabling effective wideband communication without requiring complex centralized management of all beams simultaneously.
Solution Approach 2:
The patent introduces a grouping dimension to organize beams, where beams are arranged in groups rather than being managed individually. This dimensional organization allows the system to scale to wideband scenarios by adding more beam groups rather than increasing the complexity of managing each beam in isolation. The beam identifier encodes both the beam group information and the RMSI correspondence, enabling efficient management through an additional organizational layer.
Data Source
AI summary
This disclosure relates to a correspondence indicating and determining method, device, base station, user equipment, and computer-readable storage medium. The correspondence indicating method includes: determining a beam to be sent; generating indication information, the indication information comprising a number of beam groups and identifiers corresponding to beams in each beam group sending a synchronization signal block (SSB), wherein the identifier corresponding to the beam to be sent is used for indicating a correspondence between SSBs in a corresponding beam group and remaining minimum system information (RMSI); and sending an SSB corresponding to the beam to be sent and the indication information to user equipment. According to embodiments of this disclosure, the correspondence between the RMSI and the SSB can be indicated without increasing bit overhead.