Channel Quality Segmentation for TBS-Aware Frequency Resource Selection
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Solution Overview
Problem
In wireless communications systems, particularly in 5G NR systems supporting URLLC scenarios, determining an appropriate frequency domain resource for data transmission is challenging due to the lack of consideration for data packet size, leading to inefficiencies and potential failures in meeting transmission requirements.
Innovation Solution
A method where a terminal device determines channel quality information based on a configured transport block size (TBS) and time domain resource range, dividing frequency domain resources into segments to assess channel quality, allowing the network device to properly select resources for data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If channel quality information is determined without considering transport block size, then the determination process is simple, but data transmission efficiency deteriorates and URLLC requirements cannot be met
Solution Approach 1:
The patent segments the frequency domain resources into multiple subbands and performs channel quality determination separately for each subband based on transport block size. This segmentation allows the system to consider TBS in the channel quality determination process, improving data transmission efficiency and URLLC performance, while the modular subband approach keeps the complexity manageable through localized processing.
2Measurement precision
If frequency domain resources are not segmented for channel quality assessment, then the assessment process is simple, but accuracy of resource selection deteriorates
Solution Approach 1:
The patent divides the frequency domain resources into multiple subbands and performs channel quality determination for each subband separately. This segmentation improves measurement accuracy by capturing local channel characteristics in different frequency regions, while the structured approach to segmentation keeps the implementation complexity manageable through systematic processing of each subband.
Solution Approach 2:
The patent applies local quality principle by determining channel quality information separately for each subband rather than using a single global measurement. This allows the system to capture local channel variations across different frequency regions, improving the accuracy of resource selection while maintaining reasonable complexity through localized processing.
3Reliability
If channel quality information is determined without considering time domain resource range, then the determination process is fast, but reliability of transmission deteriorates
Solution Approach 1:
The patent performs channel quality determination for multiple subbands across the configured time domain resource range in advance, before actual data transmission. This preliminary assessment of channel conditions allows the system to identify suitable frequency resources ahead of time, ensuring reliable transmission while minimizing the time required during actual data transmission.
4Reliability
If all frequency domain resources are used for data transmission, then resource utilization is high, but transmission reliability deteriorates when channel quality varies across resources
Solution Approach 1:
The patent segments frequency domain resources into subbands and determines channel quality for each segment separately. This allows the system to identify and select only those subbands with suitable channel quality for data transmission, improving reliability by avoiding poor channels while maintaining reasonable resource utilization through selective use of available频谱 resources.
Solution Approach 2:
The patent applies local quality assessment by evaluating channel conditions in each frequency subband independently. This enables the system to adapt to local channel variations and select frequency resources with good channel quality, improving transmission reliability while maintaining efficient resource utilization by using available good channels rather than forcing transmission over all resources.
Data Source
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AI summary
This application relates to the field of communications technologies, and discloses a channel quality information determining method, an apparatus, and a system. The method includes: A terminal device obtains a configured TBS, and determines channel quality information of each of K segments of frequency domain resources based on the TBS and a time domain resource range. A frequency domain resource of the terminal device is divided into N segments, where both N and K are integers greater than or equal to 1, and K is less than or equal to N. In embodiments of this application, the TBS is fully considered when the channel quality information is determined, so that a network device properly determines, based on the channel quality information, a frequency domain resource used to transmit a data packet.