5G NR Grouped Data Processing for Adjacent Subband Interference
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Solution Overview
Problem
In Fifth Generation New Radio (5G NR) communication, there is an interference problem between adjacent subbands during data transmission, and inserting a protection bandwidth between transmission bands with different Numerology wastes frequency resources, which is exacerbated by the increasing demand for larger frequency bands and more bandwidth channels.
Innovation Solution
Data is divided into groups, with each group containing subgroups, and undergoes multiple processing stages including inverse fast Fourier transforms, filtering, and windowing operations to generate sequences that are then transmitted, reducing interference and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a protection bandwidth is inserted between two transmission bands with different Numerology to solve interference, then interference between adjacent subbands is reduced, but frequency resources are wasted
Solution Approach 1:
The patent introduces a filter bank as an intermediary component that processes data sequences before transmission. The filter bank separates different numerology signals into different frequency subbands, allowing them to coexist without direct interference. This mediator structure enables frequency resource utilization without requiring protection bandwidth gaps, as the filter bank actively manages and isolates interfering signals through its filtering capability.
2Area of stationary object
If frequency band span is increased to meet future communication demands, then more bandwidth channels are required, but transmission interference problems worsen
Solution Approach 1:
The patent segments the wide frequency band into multiple subbands, each handled by a dedicated filter in the filter bank. Each filter processes a specific subgroup of data sequences and outputs to a specific subband. This segmentation allows the system to utilize large frequency spans while managing interference locally within each subband, preventing cumulative interference effects across the entire bandwidth.
Solution Approach 2:
Different filters in the filter bank can be designed with different characteristics optimized for their specific subbands. Each filter can have tailored frequency response, cutoff frequencies, and filtering parameters suited to its assigned frequency range and the specific numerology signals it processes. This local optimization allows efficient utilization of the entire frequency spectrum while maintaining signal quality and minimizing interference in each local subband.
Data Source
AI summary
Embodiments of the present disclosure provide a data processing method and apparatus, a storage medium and an electronic apparatus. The method includes: dividing data to be transmitted into G groups, wherein each group respectively includes D(g) subgroups, each of the subgroups includes one or more pieces of data, g is an identifier corresponding to each group, g=1, 2, . . . , G, and D(g)>=1; respectively performing first processing on the D(g) subgroups in each group to obtain D(g) groups of first data sequences; performing second processing on the D(g) groups of first data sequences in each group to obtain a second data sequence of each group; and transmitting G groups of the second data sequences. By means of some embodiments of the present disclosure, the problem of transmission interference in the related art can be solved.