Variable-Bandwidth NR Signaling with Guard Band RB Configuration
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Solution Overview
Problem
Existing communication systems struggle with efficiently transmitting and receiving signals and channels using variable bandwidths, particularly in NR communication systems, where channel environments require dynamic bandwidth adjustments.
Innovation Solution
A method and apparatus for configuring guard bands and resource block sets within a bandwidth part (BWP) of an unlicensed band, using configuration information to identify and utilize variable bandwidths, along with control resource sets and search spaces, enabling effective communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed bandwidth is used for signal transmission, then the communication system structure is simple, but the system cannot adapt to varying channel environments and achieves poor communication efficiency
Solution Approach 1:
The patent implements dynamic bandwidth adjustment by configuring multiple guard bands with different bandwidths (first guard band, second guard band, third guard band) and allowing the base station to select appropriate bandwidths based on channel conditions. This enables the system to transition from fixed to variable bandwidth operation, improving adaptability while managing complexity through structured configuration mechanisms.
Solution Approach 2:
The patent segments the available bandwidth into multiple distinct guard bands (first, second, and third guard bands) with different bandwidth characteristics. This segmentation allows the system to independently manage and select from multiple bandwidth options, resolving the contradiction between adaptability and complexity by organizing the complexity into manageable segments.
2Productivity
If variable bandwidth is implemented to adapt to channel environments, then communication efficiency improves, but the configuration and management complexity increases
Solution Approach 1:
The patent performs preliminary configuration of multiple guard bands with predetermined bandwidths before actual communication occurs. The base station pre-configures the first, second, and third guard bands with specific bandwidth characteristics, enabling quick selection during communication without real-time complex calculations, thus improving efficiency while managing complexity through advance preparation.
Solution Approach 2:
The patent changes the bandwidth parameter by switching between different guard bands (first guard band, second guard band, third guard band) based on channel conditions. This parameter change approach allows the system to maintain high communication efficiency through adaptive bandwidth selection while managing complexity through discrete, pre-defined parameter options rather than continuous adjustment.
3Adaptability or versatility
If multiple guard bands are configured to enable variable bandwidth, then bandwidth flexibility improves, but the signal processing complexity increases
Solution Approach 1:
The patent segments the frequency spectrum into distinct guard bands (first guard band, second guard band, third guard band), each with predetermined bandwidths. This segmentation simplifies signal processing by providing discrete, pre-defined bandwidth options rather than requiring continuous processing across variable bandwidths, thus improving flexibility while managing processing complexity through structured frequency division.
Data Source
AI summary
A method and an apparatus for transmitting/receiving a signal by using a variable band width in a communication system are disclosed. An operating method of a terminal comprises the steps of: receiving, from a base station, first configuration information about one or more guard bands of an unlicensed band; confirming the one or more guard bands configured in the unlicensed band on the basis of the first configuration information; and confirming a plurality of RB sets configured in the unlicensed band on the basis of the one or more guard bands. Therefore, performance of the communication system can be improved.