DCI Size Alignment for Multi-Carrier Scheduling
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Solution Overview
Problem
The introduction of a new DCI format in wireless communication systems often results in a limitation being unmet regarding the quantity of DCI sizes supported by terminal devices, specifically when the number of supported DCI sizes exceeds 4 or the number of DCI sizes scrambled by a C-RNTI exceeds 3, leading to increased complexity and performance issues.
Innovation Solution
A wireless communication method and system that performs alignment processing on DCI sizes to meet preset conditions, aligning DCI sizes corresponding to different formats to ensure that the quantity of supported sizes does not exceed the specified limits, thereby reducing complexity and improving performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a new DCI format is introduced to schedule multiple carriers, then the scheduling capability is improved, but the quantity of DCI sizes exceeds the supported limit of 4
Solution Approach 1:
The patent merges DCI formats by aligning the sizes of different DCI formats (e.g., DCI format 0_2 and DCI format 1_2) to be equal, thereby reducing the total number of distinct DCI sizes. This is achieved by configuring size alignment parameters that adjust the payload sizes of different DCI formats to match, allowing the system to maintain multi-carrier scheduling capability while staying within the terminal device's DCI size support limit of 4
Solution Approach 2:
The patent changes the size parameter of DCI formats through configuration parameters (such as payloadSizeAlignment) that control the alignment of DCI sizes. By adjusting these parameters, the system can dynamically control the quantity of distinct DCI sizes to meet the limitation of 4 supported sizes while maintaining the ability to schedule multiple carriers
2Adaptability or versatility
If multiple DCI formats are configured for different scenarios, then the scenario coverage is improved, but the device complexity increases
Solution Approach 1:
The patent reduces device complexity by merging DCI size variations into aligned size groups. By configuring DCI formats with aligned sizes, the terminal device needs to process fewer distinct size categories, reducing the complexity of DCI parsing and processing while still supporting multiple scenarios through the use of different DCI formats within the aligned size groups
3Adaptability or versatility
If DCI sizes are not aligned, then the scheduling flexibility is improved, but the terminal device cannot meet the DCI size limitation
Solution Approach 1:
The patent uses parameter configuration (payloadSizeAlignment) to dynamically adjust DCI size parameters, ensuring that the quantity of distinct DCI sizes meets the limitation of 4 while maintaining scheduling flexibility. The alignment parameters allow the system to control DCI sizes without sacrificing the ability to adapt to different scheduling scenarios
Data Source
AI summary
A wireless communication method, a terminal device, and a network device are provided. The wireless communication method includes: detecting, by a terminal device, DCI, where a format of the DCI is a first format, the DCI is used to schedule data transmission of at least two carriers, and the first format is one of a plurality of DCI formats; where if a quantity of DCI sizes corresponding to the plurality of DCI formats does not meet a preset condition, alignment processing is performed on DCI corresponding to the plurality of DCI formats to meet the preset condition.