BWP Frequency Resource Mapping Across Variable Subcarrier Spacing
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Solution Overview
Problem
In wireless communication systems, user equipment (UE) struggles to accurately determine the location of frequency resources due to variations in subcarrier spacing (SCS), leading to inaccuracies in subband determination, which affects communication efficiency and throughput.
Innovation Solution
The UE and base station communicate using frequency resource information that specifies first and second subband frequency resources based on different subcarrier spacings, allowing accurate determination of subband locations even when the actual SCS changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the UE determines frequency resources based on a specific reference subcarrier spacing (SCS), then the configuration is simplified, but the accuracy of subband location determination deteriorates when the actual SCS differs from the reference SCS
Solution Approach 1:
The patent applies parameter changes by providing separate frequency resource information for different subcarrier spacings (first SCS and second SCS) instead of using a single reference SCS. The UE determines the actual SCS of the cell and selects the corresponding frequency resource information, thereby adapting the configuration parameters to match the actual operating conditions and achieving accurate subband location determination regardless of SCS variations.
2Adaptability or versatility
If the actual SCS varies from the reference SCS, then the system becomes more flexible in adapting to different conditions, but the accuracy of frequency resource determination deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-configuring frequency resource information for multiple possible SCS values (first SCS and second SCS) before the UE needs to determine subband locations. The base station provides this SCS-specific frequency resource information in advance, so when the UE determines the actual SCS, it can immediately select the corresponding pre-prepared frequency resource information, ensuring both flexibility and accuracy without real-time calculation.
3Ease of operation
If the UE uses a fixed reference SCS for determining subband locations, then the determination process is simplified, but communication efficiency and throughput deteriorate due to inaccurate subband reflection
Solution Approach 1:
The patent resolves this contradiction by changing the parameter approach from using a single fixed reference SCS to using multiple SCS-specific frequency resource information sets. The UE determines the actual SCS and selects the corresponding frequency resource information, maintaining simple determination processes while ensuring accurate subband location reflection, thereby improving communication efficiency and throughput without increasing operational complexity.
Data Source
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AI summary
Provided are an operation method of a device in a wireless communication system and a device. The device receives frequency resource information from a base station and performs communication with the base station in a specific frequency bandwidth part (BWP) on the basis of the frequency resource information. The frequency resource information shows first subband frequency resources for a first subcarrier spacing (SCS) and second subband frequency resources for a second SCS. The device uses the first subband frequency resources to communicate with the base station on the basis that an SCS of the specific BWP is the first SCS, and uses the second subband frequency resources to communicate with the base station on the basis that the SCS of the specific BWP is the second SCS.