PDCCH Paging Occasion Frequency Multiplexing with SSB
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current paging occasion configurations in 5G NR systems do not effectively align with synchronization signal burst sets, leading to inefficiencies in frequency-multiplexing of PDCCH and SSB transmissions, particularly in high-frequency bands where beam sweeping is necessary.
Innovation Solution
The implementation of CORESET-SSB multiplexing patterns 2 and 3, as specified in 3GPP TS 38.213, allows for the frequency-multiplexing of paging occasions with synchronization signal bursts by modifying the PDCCH monitoring occasion and CORESET configurations, enabling better alignment and resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If paging occasions are configured independently without alignment to SS burst sets, then paging transmission can proceed without coordination, but frequency-multiplexing efficiency is reduced and resource wastage increases in high-frequency bands
Solution Approach 1:
The patent merges paging occasion (PO) configurations with SS burst set configurations by applying CORESET-SSB multiplexing patterns. This causes PDCCH monitoring occasions for paging to be frequency-multiplexed with SSB transmissions, combining two previously separate functions into a coordinated resource allocation scheme that eliminates resource wastage while maintaining paging efficiency
Solution Approach 2:
The patent introduces frequency-domain multiplexing as an additional dimension for resource allocation. By configuring PDCCH monitoring occasions to overlap in time with SSB transmissions but occupy different frequency resources, the system creates a two-dimensional resource allocation structure (time-frequency) that improves spectral efficiency and reduces resource wastage
2Productivity
If PDCCH monitoring occasions are configured to align with SS burst sets, then frequency-multiplexing efficiency improves, but configuration complexity increases
Solution Approach 1:
The patent makes the CORESET configuration universal by using the same CORESET-SSB multiplexing patterns (patterns 2 and 3) for both RMSI and paging occasions. This multi-functional approach allows a single configuration framework to serve multiple purposes, reducing the need for separate configuration mechanisms and thereby reducing overall configuration complexity despite the advanced multiplexing capabilities
Solution Approach 2:
The patent manages configuration complexity by changing specific parameters (monitoringSlotPeriodicityAndOffset, monitoringSymbolsWithinSlot) within existing PDCCH monitoring occasion structures rather than introducing entirely new configuration frameworks. This parameter-based approach allows flexible alignment with SS burst sets while reusing existing configuration mechanisms
3Productivity
If paging occasions overlap with SS burst sets in time, then frequency-multiplexing can be implemented, but interference between PDCCH and SSB transmissions may occur
Solution Approach 1:
The patent segments the frequency spectrum into distinct resources for PDCCH and SSB transmissions within the same time slot. By allocating different frequency resources to each transmission type, the system enables time overlap while preventing interference, thus achieving both high resource utilization and transmission reliability through frequency-domain separation
Data Source
AI summary
According to some embodiments, a method performed by a wireless device for receiving paging occasions and synchronization signals in a carrier frequency band comprises obtaining a first paging occasion configuration and a first synchronization signal configuration and determining that a paging occasion specified by the first paging occasion configuration at least partially overlaps in time with a synchronization signal specified by the first synchronization signal configuration. The method further comprises modifying at least one of the paging occasion configuration for the overlapping paging occasion and the synchronization signal configuration for the overlapping synchronization signal to frequency multiplex the paging occasion and the synchronization signal. The method further comprises receiving the paging occasion and the synchronization signal according to the at least one of the modified paging occasion configuration and modified synchronization signal configuration.