Adaptive Waveform Transmission for Mixed-Numerology 5G Bands
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Solution Overview
Problem
The interference between subcarriers due to different numerologies in 5G NR communication and the waste of frequency resources by inserting guard bandwidths in existing methods pose challenges in achieving efficient data transmission.
Innovation Solution
A data transmission method that selects a group of parameter sets including indications for different inverse Fourier transforms and other operations to support flexible waveform types and configurations, reducing interference and improving frequency spectrum efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If guard bandwidth is inserted between transmission bands with different numerologies, then subcarrier orthogonality is maintained, but frequency resources are wasted
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the waveform type (e.g., switching between CP-OFDM and other waveforms) based on the numerology configuration. When different numerologies are detected, the system changes the waveform parameters to maintain subcarrier orthogonality without requiring guard bandwidths, thus resolving the contradiction between maintaining orthogonality and preserving frequency resources.
Solution Approach 2:
The patent implements dynamics by making the waveform configuration adaptive rather than fixed. The base station dynamically selects and switches between different waveform types according to the numerology of the transmission band, allowing the system to adapt to changing conditions and eliminate the need for static guard bandwidths while maintaining orthogonality.
2Adaptability or versatility
If multiple numerologies are adopted between adjacent sub-bands, then data transmission flexibility is improved, but subcarrier orthogonality is destroyed
Solution Approach 1:
The patent uses dynamics by implementing adaptive waveform selection that responds to numerology changes. When multiple numerologies are detected in adjacent sub-bands, the system dynamically adjusts the waveform configuration to maintain subcarrier orthogonality while preserving the flexibility to support different numerologies, thus resolving the contradiction between adaptability and orthogonality.
Solution Approach 2:
The patent applies parameter changes by modifying waveform parameters (such as subcarrier spacing, cyclic prefix length, and other transformation parameters) according to the detected numerology. This allows the system to maintain orthogonality across different numerologies by adjusting parameters dynamically rather than using a fixed waveform configuration.
3Device complexity
If fixed waveform configuration is used, then device complexity is reduced, but adaptability to different channel bandwidths and waveform types is limited
Solution Approach 1:
The patent applies universality by designing a waveform generation system that can handle multiple waveform types and channel bandwidths through a unified framework. The base station uses a single set of processing capabilities that can be configured to support various waveforms (CP-OFDM, and other waveforms) and bandwidth configurations, eliminating the need for separate dedicated hardware for each waveform type while maintaining high adaptability.
Solution Approach 2:
The patent implements dynamics by making the waveform configuration adaptive rather than fixed. The base station dynamically selects and switches between different waveform types based on channel conditions and requirements, allowing a single device configuration to support multiple waveform types without requiring separate dedicated hardware for each waveform.
Data Source
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AI summary
Provided are a data transmission method and apparatus, and a storage medium. The data transmission method comprises: selecting a parameter set from among N parameter sets, wherein the parameter set comprises a first indication and a second indication, the first indication being used for indicating an execution mode of a first inverse Fourier transform, and the second indication being used for indicating an execution mode of a second Fourier transform; and performing data transmission on the basis of the selected parameter set.