Network Numerology and Basic Timing for High-Bandwidth Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing 5G NR technologies lack sufficient support for large-bandwidth signals in higher frequency bands, leading to issues like inter-carrier interference and limited flexibility in CP and symbol duration options, and the current sampling frequency is inadequate for future wireless networks with extended carrier frequency ranges.
Innovation Solution
Introduce new numerology schemes with additional SCS, CP duration, and DFT/FFT size options, along with photonic-based oscillators for higher sampling frequencies, allowing for flexible configuration and improved network timing references to accommodate varying frequency ranges and channel bandwidths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing 5G NR numerology schemes are used, then current network operations are maintained, but support for large-bandwidth signals in higher frequency bands is insufficient
Solution Approach 1:
The patent introduces new numerology schemes that change key parameters including subcarrier spacing (SCS) options extended to 480 kHz, cyclic prefix (CP) duration options, and discrete Fourier transform (DFT) size options. These parameter changes enable the system to adapt to higher frequency bands while maintaining signal transmission quality through optimized configurations for large-bandwidth signals.
2Adaptability or versatility
If existing CP duration options are used, then current system compatibility is maintained, but flexibility in symbol duration configuration is limited
Solution Approach 1:
The patent segments the CP duration configuration into multiple discrete options (e.g., 1/4, 1/8, 1/16, 1/32 of useful symbol duration) that can be selectively applied. This segmentation provides flexibility in symbol duration configuration while maintaining manageable system complexity through structured option sets.
Solution Approach 2:
The patent enables dynamic selection of CP duration options based on transmission conditions, frequency bands, and signal requirements. The system can adaptively choose appropriate CP lengths and symbol durations, providing flexibility without requiring complex fixed configurations for all scenarios.
3Adaptability or versatility
If current sampling frequency is used, then existing hardware is compatible, but handling of high-bandwidth signals in future networks is inadequate
Solution Approach 1:
The patent introduces extended SCS options including 480 kHz and new DFT size options (e.g., 8192, 16384) that require higher sampling frequencies. These parameter changes enable future networks to handle high-bandwidth signals while providing guidance for hardware design and photonic-based oscillator implementations.
4Reliability
If standard 5G NR numerology is applied, then current network operations function, but inter-carrier interference occurs in higher frequency bands
Solution Approach 1:
The patent addresses inter-carrier interference by optimizing the relationship between SCS, CP duration, and DFT size parameters. The new numerology schemes configure these parameters to better match the characteristics of higher frequency bands, reducing inter-carrier interference while maintaining signal transmission quality through coordinated parameter selection.
Data Source
AI summary
By defining more SCS options and Discrete Fourier Transform (“DFT”) options for transmissions in future networks, there arises cause to select from among the options, with aspects of the channel as guidance for the selection. In addition, new CP designs may be defined for use with the new SCS options and the new DFT options along with methods of selecting a CP design appropriate to a particular situation. The new CP designs may be shown to have smaller CP overhead when compared to the known CP designs used for known combinations of an SCS option with an FFT size option. New sampling frequency design options and new system basic timing options may also be defined, along with methods of making appropriate selections from among these options.