5G NR SSB and CORESET Resource Allocation
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Solution Overview
Problem
In the 5G NR system, when two SSBs are sent in one slot, and the length of the time domain of the CORESET where the PDCCH of the RMSI is located exceeds one symbol, there is insufficient space to configure the CORESET of the RMSI associated with both SSBs, leading to a conflict in resource allocation.
Innovation Solution
The proposed solution involves an information processing method where a terminal device receives at most two SSBs in one slot and detects PDCCHs of RMSI on CORESETs of the RMSI in a one-to-one association with the SSBs, allowing for efficient configuration of the CORESETs even when their time domain length exceeds one symbol.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two SSBs are sent in one slot with CORESET time domain length exceeding one symbol, then the coverage and robustness of RMSI transmission is improved, but the remaining space in one slot is not enough to configure the CORESET of the RMSI associated with both SSBs
Solution Approach 1:
The patent divides the resource configuration into separate parts: one CORESET configuration for the first SSB and another CORESET configuration for the second SSB. Each SSB is associated with its own dedicated CORESET, allowing independent configuration and avoiding resource conflicts. This segmentation enables the system to support multiple SSBs with extended CORESET lengths without overwhelming the slot structure.
Solution Approach 2:
The patent introduces frequency domain differentiation by configuring different frequency locations for the CORESETs associated with different SSBs. While the time domain length of each CORESET can exceed one symbol, the frequency domain separation ensures that the total resource usage remains within acceptable limits. This dimensional approach allows extended CORESET duration without linearly increasing overall resource consumption.
2Adaptability or versatility
If the CORESET of the RMSI associated with two SSBs are configured in one slot, then the system supports multiple beams for coverage enhancement, but the remaining space in one slot is not enough to configure the transmission of these two SSBs
Solution Approach 1:
The patent segments the slot structure by assigning different time-domain positions and frequency locations to CORESETs associated with different SSBs. This segmentation allows multiple SSBs to be transmitted in one slot with their respective CORESETs properly configured, avoiding time resource conflicts while maintaining multi-beam support capability.
Solution Approach 2:
The patent employs dynamic resource allocation where the network can flexibly configure the time-domain offset and frequency location of each CORESET based on the specific SSB configuration. This dynamic approach enables the system to adapt to different multi-beam scenarios while efficiently utilizing the available slot time resources.
Data Source
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AI summary
Disclosed is an information processing method, comprising : receiving, in one time slot, at most two synchronization signal blocks (SSBs) sent by a network device, and detecting a physical downlink control channel (PDCCH) of RMSI on a minimum system information control resource set (CORESET of RMSI) in one-to-one association with the at most two SSBs. Further disclosed are another information processing method and device and a storage medium.