SSB CORESET Search via PBCH Indication
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Solution Overview
Problem
In current communication systems, finding a common resource set (CORESET) of remaining system information (RMSI) from multiple synchronous signal blocks (SSBs) is inefficient, as it often requires searching for new SSBs and parsing physical broadcast channels (PBCH), which is time-consuming.
Innovation Solution
A method and device that add indication information to a physical broadcast channel (PBCH) in an SSB to indicate time domain and frequency-domain resource information of the CORESET, allowing user equipment (UE) to search for the CORESET in a corresponding bandwidth portion, and if not found, continue searching in adjacent bandwidth parts or all SSBs, reducing the time required to locate the CORESET.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If user equipment searches for CORESET by finding new SSBs and parsing PBCH, then the search can be thorough, but the search time increases significantly
Solution Approach 1:
The patent applies preliminary action by pre-configuring and indicating the time-domain location and frequency-domain resource element number of the CORESET in the SSB. This allows the UE to directly locate the CORESET without performing time-consuming searches through multiple SSBs and PBCH parsing, thus resolving the contradiction between thorough search and search time.
2Productivity
If indication information is added to PBCH in SSB, then CORESET location can be indicated efficiently, but the complexity of information structure increases
Solution Approach 1:
The patent uses the existing SSB structure to carry multiple functions: it maintains its original synchronization and broadcast functions while also indicating the CORESET location through embedded indication information. This multi-functionality approach improves CORESET location efficiency without adding separate dedicated signaling structures, thus avoiding increased information structure complexity.
3Speed
If user equipment searches in corresponding bandwidth portion first, then search speed improves, but the method requires handling multiple search scenarios
Solution Approach 1:
The patent segments the search process into two parts: first searching in the indicated bandwidth portion based on SSB location, and if not found, then searching in other bandwidth portions. This segmentation allows fast initial search while providing a fallback mechanism, resolving the contradiction between search speed and handling multiple scenarios through a structured hierarchical approach.
Data Source
AI summary
A method for searching for a CORESET of RMSI includes: receiving, from a base station, a synchronous signal block (SSB) carrying indication information, wherein the indication information is configured to indicate time domain information of the CORESET of the RMSI corresponding a plurality of SSBs and a number of frequency-domain resource elements occupied by the CORESET of the RMSI; obtaining the indication information by parsing the received SSB; and searching for, according to the indication information, the CORESET of the RMSI in a corresponding time domain and a bandwidth portion corresponding to the received SSB.