Method and Apparatus for Forming Data Sequence, and Storage Medium, and Electronic Apparatus
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Solution Overview
Problem
The Fifth Generation New Radio (5G NR) communication technology using CP-OFDM is susceptible to frequency and time offset between sub-bands, causing inter-sub-band interference due to frequency spectrum leakage and loss of orthogonality, and inserting guard bandwidths to mitigate this issue leads to resource wastage.
Innovation Solution
Divide N frequency domain resource blocks into two groups with alternating distribution in the frequency domain, allowing for different bandwidths and enabling unified windowing or filtering with the same waveform function, and ensuring equal intervals between adjacent blocks post-inverse Fourier transform to avoid interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If guard bandwidth is inserted between transmission bands with different numerologies, then inter-sub-band interference is reduced, but frequency resources are wasted
Solution Approach 1:
The N frequency domain resource blocks are divided into two groups, where each group contains L(m) frequency domain resource blocks. The two groups are distributed alternately in the frequency domain, which segments the continuous frequency resources into interleaved groups. This segmentation allows each group to be processed independently with unified filtering while maintaining close frequency spacing, thereby reducing interference without requiring guard bandwidth and avoiding resource waste.
2Device complexity
If frequency domain resource blocks are processed with unified filtering, then processing complexity is reduced, but interference between adjacent blocks may occur
Solution Approach 1:
By dividing resource blocks into two alternately distributed groups, the patent enables unified filtering within each group while the alternating distribution ensures sufficient frequency spacing. This segmentation strategy allows simple unified filtering operations without requiring complex per-block filtering, thus reducing processing complexity while preventing interference through proper group distribution.
Solution Approach 2:
The alternating distribution pattern acts as an intermediary structure between the filtering operation and the resource blocks. By organizing blocks into two interleaved groups with appropriate spacing, the distribution pattern mediates between the need for simple unified filtering and the requirement to prevent interference, allowing both goals to be achieved simultaneously.
Data Source
AI summary
The embodiments of the present disclosure provide a data sequence forming method and apparatus, a storage medium, and an electronic device. The method comprises: dividing N frequency domain resource blocks used for transmitting data to be transmitted into two groups to obtain two groups of frequency domain resource blocks, wherein each group comprises L(m) frequency domain resource blocks, and the two groups of frequency domain resource blocks are distributed alternately in frequency domain, where N and L(m) are both positive integers, and m=1 or 2; and processing data to be transmitted on the L(m) frequency domain resource blocks in each group respectively to form L(m) groups of data sequences. The described technical solution solves the problem in the prior art that interference easily occurs between sub-bands when data sequences are filtered.