Frequency-Block Data Transmission for Lower Leakage and Resource Waste
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Solution Overview
Problem
Existing wireless communication technologies, such as LTE and 5G NR, face issues with frequency resource waste and inter-subband interference due to the use of CP-OFDM, which is sensitive to frequency and time offsets, leading to inefficient communication and resource leakage.
Innovation Solution
A data transmission method involving processing data in frequency domain resource blocks and performing inverse Fourier transforms to form data sequences, reducing resource waste and interference by supporting multiple waveform schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If CP-OFDM is used to solve multi-path delay problems and simplify channel estimation, then channel estimation precision is improved, but frequency resource waste and inter-subband interference occur due to sensitivity to frequency and time offsets
Solution Approach 1:
The patent segments the frequency domain resource blocks into multiple groups, where each group can be processed independently with different waveform schemes. This segmentation allows selective application of guard intervals only where needed, reducing overall frequency resource waste while maintaining channel estimation precision in critical subbands.
Solution Approach 2:
The patent applies different waveform processing qualities to different frequency subbands. Specifically, guard intervals are applied locally to subbands that require protection against interference, while other subbands use more efficient processing. This local differentiation reduces overall frequency resource waste while maintaining necessary channel estimation precision where required.
2Object-affected harmful factors
If guard interval is inserted in frequency domain to reduce inter-subband interference, then interference reduction is achieved, but frequency resource waste increases
Solution Approach 1:
The patent divides frequency domain resource blocks into multiple groups and applies guard intervals selectively to specific groups rather than uniformly across all subbands. This segmented approach reduces inter-subband interference in critical areas while minimizing frequency resource waste in areas where guard intervals are not needed.
Solution Approach 2:
The patent applies guard intervals partially rather than excessively. Instead of inserting guard intervals in all frequency subbands, the method applies them only to specific groups where interference mitigation is necessary, achieving adequate interference reduction without the excessive frequency resource waste that would result from universal application.
3Adaptability or versatility
If different numerologies are adopted between adjacent subbands in 5G NR, then waveform flexibility is improved, but orthogonality between subcarriers is destroyed causing new interference problems
Solution Approach 1:
The patent segments frequency domain resource blocks into multiple groups that can be assigned different numerologies. By processing each group separately through inverse Fourier transforms, the patent maintains waveform flexibility for different numerologies while preventing interference between groups through the structured processing approach.
Solution Approach 2:
The patent introduces an intermediary processing structure where frequency domain resource blocks are divided into groups, each processed independently through inverse Fourier transforms. This intermediary grouping structure acts as a mediator that allows different numerologies to coexist without direct interference, while still achieving the desired waveform flexibility.
4Adaptability or versatility
If multiple waveform schemes are supported for large frequency band span in 6G services, then service adaptability is improved, but system complexity increases
Solution Approach 1:
The patent segments the large frequency band into multiple groups of resource blocks, where each group can be configured with different waveform schemes. This segmentation enables support for multiple waveform types and diverse deployment methods while managing system complexity through modular, independent processing of each group.
Solution Approach 2:
The patent creates a universal processing framework that can handle multiple waveform schemes through a common structure of dividing frequency domain resource blocks into groups and applying inverse Fourier transforms. This multi-functional approach allows the system to support diverse 6G services and deployment methods without requiring separate processing systems for each waveform type.
Data Source
AI summary
A data transmission method is provided, the method includes: transmitting to-be-transmitted data in N frequency domain resource blocks, wherein the N frequency domain resource blocks include at least one subcarrier respectively, and N is an integer greater than or equal to 1; performing a first processing on to-be-transmitted data on each frequency domain resource block of the N frequency domain resource blocks, to form N data sequences; performing a second processing on the N data sequences to form a data sequence; and transmitting the data sequence.