RMSI CORESET Absence Indication in 5G SSB
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Solution Overview
Problem
In 5G wireless communication, when the transmission cycle of a synchronous broadcast block is configured to be 20 ms or shorter, there may not be a corresponding CORESET for RMSI, leading to uncertainty for user equipment on whether to continue searching at the same frequency or switch, affecting access performance.
Innovation Solution
The base station transmits indication information in the synchronous broadcast block to inform user equipment that no CORESET for RMSI is present in the current transmission cycle, allowing the equipment to resolve the CORESET position from the next synchronous broadcast block, improving search efficiency and access performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transmission cycle of SSB is configured to be 20 ms or shorter, then the synchronization and broadcast efficiency is improved, but there may not be a corresponding CORESET for RMSI in certain transmission cycles, causing uncertainty for UE access
Solution Approach 1:
The base station performs preliminary action by transmitting indication information in the SSB to pre-notify UE about the absence of CORESET in the current transmission cycle. This allows UE to proactively adjust its search strategy before attempting to access RMSI, preventing wasted search efforts and improving access reliability while maintaining short SSB transmission cycles
Solution Approach 2:
The indication information transmitted in SSB serves as feedback to UE, providing real-time information about CORESET availability. This feedback mechanism enables UE to dynamically adjust its RMSI search behavior based on the current transmission cycle status, resolving the contradiction between fast synchronization and reliable access
Data Source
AI summary
The present disclosure relates to an information indication method and apparatus, a method and an apparatus for determining a CORESET of RMSI, a base station, user equipment and a computer-readable storage medium. The method includes: configuring, for a CORESET of RMSI corresponding to an SSB, indication information indicating that the base station has not transmitted the CORESET of the RMSI in a current transmission cycle of the SSB; adding the indication information to the SSB; and transmitting the SSB carrying the indication information to user equipment UE in a beam scanning manner.