Bandwidth Part Configuration in Unlicensed Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face challenges in configuring an initial bandwidth part, particularly in unlicensed bands and synchronization raster configurations, which are essential for next-generation radio access technologies like New Radio (NR) that require efficient coexistence with other operators and variable synchronization signal block positions.
Innovation Solution
A method and apparatus for configuring an initial bandwidth part by obtaining a synchronization signal block with a first center frequency within predetermined frequency resources of an unlicensed band, identifying a second center frequency based on preconfigured candidates, and using physical broadcast channel information to determine the initial bandwidth part, considering integer multiples of a unit frequency and synchronization raster configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If synchronization signal block positions are made variable to support next-generation radio access technologies, then adaptability and versatility are improved, but device complexity and difficulty of detecting and measuring increase
Solution Approach 1:
The patent changes the frequency domain position parameter of synchronization signal blocks by introducing an offset value that shifts the center frequency from a fixed synchronization raster position. This allows variable positioning while maintaining a structured approach through parameter modification rather than complete reconfiguration of the synchronization mechanism.
Solution Approach 2:
The patent performs preliminary configuration by pre-defining candidate bandwidth parts and their associated synchronization signal block positions before actual operation. The offset value is determined in advance based on preconfigured candidates, which reduces real-time computational complexity and simplifies the detection process during actual synchronization operations.
2Adaptability or versatility
If multiple preconfigured candidates are used for bandwidth part configuration, then adaptability is improved, but device complexity and information processing requirements increase
Solution Approach 1:
The patent segments the frequency domain resources by dividing them into multiple candidate bandwidth parts, each with its own center frequency and synchronization signal block position. This segmentation allows the system to select appropriate candidates based on specific operational requirements while keeping each individual candidate configuration manageable and well-defined.
Solution Approach 2:
The patent introduces an offset value as an intermediary parameter that connects the synchronization raster position to the actual synchronization signal block center frequency. This intermediary simplifies the relationship between fixed raster positions and variable signal positions, making the system easier to manage despite having multiple candidates.
3Adaptability or versatility
If synchronization signal block center frequency is offset from synchronization raster position, then adaptability to unlicensed band characteristics is improved, but measurement precision and detection difficulty increase
Solution Approach 1:
The patent modifies the frequency position parameter by applying a controlled offset from the synchronization raster position. This parameter change enables the system to adapt to unlicensed band characteristics where fixed raster positions may not be optimal, while maintaining precise control through the defined offset mechanism.
Data Source
AI summary
Disclosed in various embodiments are a method for configuring a bandwidth part in a wireless communication system, and a device for supporting same. As one specific example, disclosed in various embodiments are: a method by which a device identifies, confirms, or configures an initial bandwidth part in a wireless communication system; and a device for supporting same.