PDSCH Region Allocation for RMSI Transmission Efficiency
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Solution Overview
Problem
Current wireless communication systems, particularly in the 5G context, face challenges in efficiently allocating and transmitting system information due to limitations in the physical downlink shared channel (PDSCH) region, which affects the reliability and efficiency of remaining minimum system information (RMSI) transmission and reception.
Innovation Solution
The method involves receiving a synchronization signal/physical broadcast channel (SS/PBCH) block to obtain information related to a control resource set (CORESET) and allocating a larger PDSCH region for RMSI transmission and reception, with specific timing and frequency allocations to optimize the use of the PDSCH, allowing for efficient RMSI transmission even when no SS/PBCH block is transmitted in the corresponding time area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the PDSCH region is limited in size, then the SS/PBCH block transmission is ensured, but the RMSI transmission efficiency deteriorates
Solution Approach 1:
The patent extends the PDSCH region into the time domain by spanning multiple symbols (2 or 4 symbols) when multiplexing pattern 2 is used. This temporal expansion allows the system to allocate more resources for RMSI transmission without increasing the frequency bandwidth, thereby resolving the contradiction between PDSCH region size and RMSI transmission efficiency.
Solution Approach 2:
The patent dynamically adjusts the PDSCH region configuration based on the multiplexing pattern. When multiplexing pattern 2 is detected, the system automatically extends the PDSCH time period to span 2 or 4 symbols, allowing flexible adaptation to different transmission scenarios and optimizing RMSI efficiency without permanently increasing resource allocation.
2Productivity
If the PDSCH region is expanded, then the RMSI transmission efficiency is improved, but the frequency resources for SS/PBCH block are reduced
Solution Approach 1:
The patent segments the frequency spectrum into distinct areas: a first frequency area for PDSCH, a second frequency area for SS/PBCH block, and a third frequency area for CORESET. This segmentation allows each function to operate in its designated frequency region without interference, enabling PDSCH to expand in time domain while SS/PBCH block maintains sufficient frequency resources in its own area.
Solution Approach 2:
Instead of expanding PDSCH in the frequency dimension which would encroach on SS/PBCH block resources, the patent shifts the expansion to the time dimension by utilizing multiple symbols. This dimensional transition allows RMSI transmission efficiency to improve without reducing the quantity of frequency resources allocated to SS/PBCH block.
3Quantity of substance
If the PDSCH region spans multiple symbols, then the RMSI capacity increases, but the time synchronization complexity increases
Solution Approach 1:
The patent establishes predetermined rules for PDSCH region configuration based on multiplexing patterns. The UE is pre-configured to expect that when multiplexing pattern 2 is used, the PDSCH will span 2 or 4 symbols. This preliminary configuration simplifies synchronization complexity by providing clear, pre-defined expectations rather than requiring complex real-time analysis.
Solution Approach 2:
The patent changes the time domain parameter of the PDSCH region from a single symbol to multiple symbols (2 or 4 symbols) specifically when multiplexing pattern 2 is detected. This parameter change increases RMSI capacity while maintaining manageable synchronization complexity through the use of standardized, discrete time spans rather than arbitrary durations.
Data Source
AI summary
Disclosed is a method for receiving remaining minimum system information (RMSI) by a terminal in a wireless communication system. In particular, the method comprises: receiving a synchronization signal/physical broadcast channel (SS/PBCH) block; acquiring information related to a control resource set (CORESET) from the SS/PBCH block; and receiving the RMSI through a region for a physical downlink shared channel (PDSCH) acquired on the basis of the CORESET, wherein when the first SS/PBCH block and the CORESET are multiplexed on the basis of multiplexing pattern 1, a time interval of the region for the PDSCH includes 2 symbols or 4 symbols.