SSB Position Determination for Frame Based Equipment
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in efficiently managing synchronization signal blocks (SSBs) due to the limitations in frame-based equipment (FBE) mode, leading to suboptimal radio management and potential performance issues.
Innovation Solution
The method involves determining a fixed frame period (FFP) for frame-based equipment (FBE) mode and identifying invalid SSB candidate positions based on the FFP and subcarrier spacing (SCS). This information is used to perform radio management, excluding the invalid SSB positions to improve communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all possible SSB candidate positions are used for radio management in FBE mode, then measurement coverage is improved, but processing overhead and time consumption increase due to invalid positions
Solution Approach 1:
The patent extracts and removes invalid SSB candidate positions from the set of all possible positions. By identifying and excluding positions that cannot contain valid SSBs based on FFP and SCS parameters, the system reduces processing overhead while maintaining measurement accuracy only at valid positions.
Solution Approach 2:
The patent changes the parameter set used for SSB position determination by introducing FFP (fixed frame period) and SCS (subcarrier spacing) as filtering criteria. These parameter changes enable the system to dynamically identify valid versus invalid positions, optimizing the balance between measurement coverage and processing efficiency.
2Device complexity
If invalid SSB candidate positions are excluded from radio management, then processing overhead is reduced, but the number of available measurement positions decreases
Solution Approach 1:
The patent uses parameter changes through FFP and SCS values to dynamically determine the set of valid SSB positions. By adjusting these parameters, the system optimizes the balance between the number of available measurement positions and processing complexity, ensuring efficient radio management.
3Productivity
If SSB positions are determined based on fixed frame period and subcarrier spacing, then communication efficiency is improved, but system flexibility is reduced
Solution Approach 1:
The patent introduces dynamic determination of invalid SSB positions based on variable FFP and SCS parameters. This dynamic approach allows the system to adapt to different operational conditions while maintaining high communication efficiency through optimized radio management procedures.
Data Source
AI summary
This disclosure provides systems, methods and apparatus for cellular communications. In one aspect, a UE determines an FFP of a cell signal for the UE in a frame based equipment mode, determines one or more SSB positions in the cell signal based on the FFP, and performs radio management of the UE based at least in part on the one or more invalid SSB candidate positions. Performing radio management may include using one or more SSB positions in the FFP exclusive of the one or more invalid SSB candidate positions. Radio management may include PDSCH rate matching, radio link monitoring or measurement, or radio resource management. In some implementations, the one or more SSB positions are SSB positions after a first eight SSB positions in an FFP. In some other implementations, the one or more SSB positions are SSB positions that at least partially overlap an idle period between FFPs.