Wireless Frame Configuration for High-Frequency Bands
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Solution Overview
Problem
As the density of nodes and user equipment increases, existing wireless communication systems face challenges in efficiently utilizing high-density nodes and accommodating newly introduced frequency bands with different frequency characteristics, requiring a new frame structure to maintain effective signal transmission and improve throughput.
Innovation Solution
The method involves changing the subcarrier spacing and adjusting the number of symbols in a transmission time interval, while maintaining the sampling frequency and system bandwidth, to adapt to specific frequency bands, especially high-frequency bands, and applying these changes to high-speed user equipment, thereby optimizing frame configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an existing frame structure is applied to a newly introduced frequency band with different frequency characteristics, then the system can maintain a simple and standardized structure, but the signal transmission effectiveness and throughput will deteriorate due to mismatched frequency characteristics
Solution Approach 1:
The patent applies parameter changes by modifying the frame structure parameters (subcarrier spacing, cyclic prefix length, symbol duration) to match the specific frequency characteristics of newly introduced frequency bands. This allows the system to adapt to different frequency bands without completely redesigning the frame structure, balancing adaptability with maintaining a standardized approach.
Solution Approach 2:
The patent introduces dynamic frame structure configuration where parameters such as subcarrier spacing and cyclic prefix length can be adjusted based on the frequency band being used. This dynamic adaptation enables the system to optimize performance for each frequency band while maintaining a unified base framework.
2Reliability
If the subcarrier spacing is increased to accommodate high-frequency bands, then the signal transmission effectiveness improves, but the spectral efficiency and data throughput may worsen due to reduced frequency resolution
Solution Approach 1:
The patent changes the subcarrier spacing parameter specifically for high-frequency bands while maintaining other parameters optimally. This selective parameter adjustment improves signal transmission effectiveness in high-frequency bands without unnecessarily reducing spectral efficiency, as the changes are tailored to specific frequency characteristics rather than applied universally.
Solution Approach 2:
The patent applies different frame structure parameters locally to different frequency bands. High-frequency bands receive optimized parameters (such as increased subcarrier spacing) while lower frequency bands maintain standard parameters, ensuring that spectral efficiency is preserved where it is not needed while improving reliability where required.
3Productivity
If the frame structure is optimized for high-density nodes and high-frequency bands, then the spectral efficiency and throughput improve, but the compatibility with existing systems and the ease of operation worsen
Solution Approach 1:
The patent creates a universal frame structure that can function across multiple frequency bands and node densities by introducing configurable parameters. The same basic frame structure serves both legacy and new frequency bands, maintaining ease of operation through a unified framework while enabling optimization for high-density scenarios through parameter adjustment.
Solution Approach 2:
The patent introduces dynamic parameter configuration that allows the system to adapt to different operating conditions (node density, frequency band) without requiring different frame structures. This dynamic approach maintains operational simplicity by using a single configurable framework rather than multiple fixed structures.
Data Source
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AI summary
Flexible employment of frame configuration in light of the Doppler frequency change is proposed. According to the present invention, frame configuration for a predetermined frequency band may be changed. Changing frame configuration in the present invention may include changing subcarrier spacing.