Irregular Channel Bandwidth Support via Digital Filter Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing UE designs face challenges in supporting irregular channel bandwidths without changes to analogue filter implementation, leading to inadequate demodulation, signal degradation, and failure to meet 3GPP adjacent channel selectivity requirements due to adjacent channel interference.
Innovation Solution
A terminal device configures multiple bandwidths for multiple filters based on an irregular channel bandwidth configuration received from a network device, with at least two bandwidths being different, allowing for efficient use of the entire channel bandwidth without updating the analogue filters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If standard channel bandwidth filters are used for irregular channel bandwidth, then device complexity is reduced, but adjacent channel interference increases and signal quality deteriorates
Solution Approach 1:
The patent divides the filtering function into multiple digital filters with different bandwidths (first digital filter with first bandwidth, second digital filter with second bandwidth) to handle irregular channel bandwidth. This segmentation allows each filter to target specific frequency ranges, reducing adjacent channel interference while maintaining manageable device complexity through software-based implementation.
Solution Approach 2:
The patent changes the bandwidth parameters of digital filters dynamically based on the irregular channel bandwidth configuration. By adjusting filter bandwidth parameters rather than hardware filter characteristics, the system adapts to irregular channel bandwidths while avoiding adjacent channel interference, resolving the contradiction between device complexity and interference reduction.
2Ease of manufacture
If irregular channel bandwidth is supported without analogue filter updates, then ease of manufacture is improved, but demodulation performance deteriorates
Solution Approach 1:
The patent replaces analogue filter hardware with software-based digital filtering. By substituting mechanical/analog filter systems with programmable digital signal processing, the system achieves irregular channel bandwidth support without requiring physical filter updates, while maintaining or improving demodulation performance through flexible digital filter design.
Solution Approach 2:
The patent creates a universal digital filtering system that can handle multiple channel bandwidth configurations (both standard and irregular) through software configuration rather than hardware changes. This multi-functional approach allows a single device design to support various bandwidth requirements, improving ease of manufacture while maintaining demodulation accuracy through adaptive digital filtering.
3Adaptability or versatility
If multiple different bandwidths are configured for filters, then adaptability to irregular channel bandwidth is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic filter bandwidth configuration where digital filters can be programmatically adjusted to match irregular channel bandwidth requirements. This dynamic adaptability allows the system to support various irregular bandwidths while managing complexity through software control mechanisms that automatically configure appropriate filter parameters based on received bandwidth information.
Data Source
AI summary
Example embodiments of the present disclosure relate to a terminal device, a method, an apparatus and a computer readable storage medium for irregular channel bandwidth support mechanism. In some embodiments, a terminal device may receive a configuration of irregular channel bandwidth from a network device and further configure multiple bandwidths for multiple filters based on the configuration. In some embodiments, at least two of the multiple bandwidths are different. As such, the filter configurations at the terminal device may support the irregular channel bandwidths, even when the terminal device does not update the analog filters in hardware.