Terminal Symbol-by-Symbol Subcarrier Spacing Control
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Solution Overview
Problem
In 6G wireless communication systems, the granularity of resource use is limited by the slot-based BWP switching, which restricts scheduling flexibility and power optimization in NR, necessitating finer control over subcarrier spacing.
Innovation Solution
A terminal is equipped with a reception unit to receive signaling from a base station and a control unit to determine subcarrier spacing on a symbol-by-symbol basis, allowing for flexible SCS switching within a slot, enabling more efficient resource allocation and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If slot-based BWP switching is used, then terminal power consumption is optimized and resource use is flexible, but scheduling flexibility is limited due to coarse granularity
Solution Approach 1:
The patent divides the slot into multiple symbols and applies different subcarrier spacings to different symbols within the same slot. This segmentation allows fine-grained control over time resources, enabling the system to switch between different numerologies at the symbol level rather than being constrained to slot-level switching. The reception unit receives signaling that indicates different subcarrier spacings for different symbols, and the transmission unit transmits signals accordingly, achieving both power optimization and enhanced scheduling flexibility.
2Productivity
If subcarrier spacing is fixed per slot, then implementation is simple, but resource allocation efficiency is reduced
Solution Approach 1:
The patent introduces dynamic subcarrier spacing selection at the symbol level within a slot. The control unit determines which subcarrier spacing to apply to each symbol based on received signaling, allowing the system to adapt numerology dynamically rather than being fixed per slot. This dynamic approach enables efficient resource allocation by selecting optimal subcarrier spacings for different symbols while managing complexity through structured control mechanisms that process signaling and make determined decisions about parameter application.
Data Source
AI summary
A terminal includes: a reception unit configured to receive signaling from a base station; a control unit configured to determine a subcarrier spacing to be applied to each symbol included in a slot, based on the signaling; and a transmission unit configured to transmit a signal in the slot, based on the determined subcarrier spacing. The reception unit receives a signal in the slot, based on the determined subcarrier spacing.