RMSI Reception Timing in 5G Beamforming Systems
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Solution Overview
Problem
In 5G wireless communication systems, there is a challenge in efficiently delivering and receiving remaining minimum system information (RMSI) due to the high frequency bands and beamforming schemes, which complicate the synchronization and timing of RMSI physical downlink control channel (PDCCH) monitoring occasions.
Innovation Solution
The method involves receiving a synchronization signal block (SS block) from a base station, decoding the physical broadcast channel (PBCH) to obtain beam index, RMSI offset, and interval, and determining the timing of RMSI PDCCH monitoring occasions using specific equations to synchronize with the RMSI PDCCH, allowing for accurate detection and decoding of RMSI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming schemes are employed in high frequency bands, then signal transmission reliability is improved, but timing synchronization of RMSI PDCCH monitoring occasions becomes more complex
Solution Approach 1:
The patent applies preliminary action by pre-configuring RMSI offset and interval parameters in the PBCH before RMSI PDCCH monitoring occasions occur. The UE decodes these parameters from the PBCH in advance, allowing it to calculate and prepare for the correct timing of RMSI PDCCH monitoring occasions without real-time complex synchronization negotiations, thus resolving the timing synchronization complexity while maintaining reliability in beamforming high frequency systems
Solution Approach 2:
The patent introduces RMSI offset and interval parameters as intermediary elements that mediate between the PBCH and RMSI PDCCH monitoring occasions. These parameters act as timing references that simplify the synchronization process by providing explicit timing indicators, reducing the complexity of direct timing alignment between beamforming transmissions and RMSI monitoring
2Productivity
If RMSI PDCCH monitoring occasions are associated with SS block burst sets, then system information delivery efficiency is improved, but timing determination complexity increases
Solution Approach 1:
The patent applies preliminary action by embedding RMSI offset and interval configuration information in the PBCH before the UE needs to monitor RMSI PDCCH occasions. This allows the UE to pre-calculate monitoring timing based on SS block burst set associations without complex real-time determination, improving delivery efficiency while managing timing determination complexity through advance configuration
Data Source
AI summary
Aspects of the disclosure provide a method for remaining minimum system information (RMSI) reception. The method can include receiving a PBCH carrying a beam index (SBI) and indicating configuration information of a sequence of RMSI PDCCH monitoring occasions. The PBCH is carried in an SS block of an SS block burst set. The configuration information indicates an RMSI offset (D) between a timing reference and a slot carrying the RMSI PDCCH monitoring occasion at the beginning of the sequence of the RMSI PDCCH monitoring occasions, and an RMSI interval (T) between two RMSI PDCCH monitoring occasions in the sequence of RMSI PDCCH monitoring occasions. The method further includes determining a timing of a first RMSI PDCCII monitoring occasion in the sequence of RMSI PDCCH monitoring occasion according to the SBI and the configuration information.