Frequency-Block Data Transmission for Sub-Carrier Orthogonality
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Solution Overview
Problem
Existing wireless communication technologies, such as LTE, 5G NR, and anticipated 6G, face interference issues between sub-carriers due to spectral leakage and loss of orthogonality, leading to inefficiencies and resource waste.
Innovation Solution
Perform inverse Fourier transforms on data in frequency domain resource blocks with a specific number of sub-carriers, followed by a second transform on the resulting groups to generate orthogonal time domain data sequences, ensuring consistent intervals and reduced processing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If guard intervals are inserted in the frequency domain to suppress out-of-band leakage, then interference between sub-carriers is reduced, but spectral efficiency decreases
Solution Approach 1:
The patent changes the parameter of sub-carrier spacing to be a multiple of a base spacing (K×Δf, where K is an integer). This parameter modification allows the system to maintain orthogonality and suppress spectral leakage without requiring guard intervals, thereby resolving the contradiction between reducing interference and maintaining spectral efficiency.
2Adaptability or versatility
If different sub-carrier spacing types are used between adjacent sub-bands in 5G NR, then waveform flexibility is improved, but orthogonality between sub-carriers is damaged and interference issues arise
Solution Approach 1:
The patent establishes a unified relationship where sub-carrier spacing in all sub-bands is an integer multiple of a common base spacing. This creates an equipotential framework that maintains orthogonality across different sub-bands, allowing waveform flexibility while preventing interference that would otherwise arise from incompatible spacing configurations.
3Adaptability or versatility
If the number of sub-carriers in frequency domain resource blocks is not optimized, then resource allocation flexibility is improved, but processing complexity and interference increase
Solution Approach 1:
The patent segments the frequency domain resource blocks such that each contains a number of sub-carriers that is an integer multiple of a base unit. This segmentation approach provides structured flexibility for resource allocation while maintaining manageable processing complexity through standardized block sizes.
Data Source
AI summary
Provided in the present disclosure are a data transmission method and apparatus, and a storage medium and an electronic apparatus. The method comprises: transmitting, in N frequency domain resource blocks, data to be transmitted, wherein the N frequency domain resource blocks respectively include the same number K of sub-carriers, K is ith power of 2, i is a positive integer, and N is an integer greater than 1; respectively performing inverse Fourier transform on said data on the K sub-carriers of each frequency domain resource block, so as to form N groups of data sequences, wherein there are 2K points of inverse Fourier transform; performing inverse Fourier transform on the N groups of data sequences, so as to form a group of time domain data sequences, and transmitting the group of time domain data sequences.