Terminal Capability Signaling for Single DCI Multi-Cell Scheduling
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Solution Overview
Problem
Existing terminals face challenges in determining the relationship with cross-carrier scheduling for Single DCI Multi-Cell PDSCH/PUSCH scheduling, leading to instability and inappropriate operations.
Innovation Solution
A terminal and radio communication method that assumes mandatory support for cross-carrier scheduling when using single downlink control information for scheduling multiple cells, and transmits terminal capability information to ensure stable operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Single DCI Multi-Cell PDSCH/PUSCH scheduling is introduced, then scheduling efficiency is improved, but terminal operation stability deteriorates due to uncertainty in cross-carrier scheduling relationship
Solution Approach 1:
The terminal performs preliminary determination of cross-carrier scheduling support status before actual scheduling operation. The control unit assumes mandatory support for cross-carrier scheduling and transmits capability information in advance, establishing clear operational expectations before data channel scheduling occurs, thereby preventing instability during actual scheduling operations
2Reliability
If terminal capability information is transmitted to ensure compatibility, then operation stability is improved, but signaling overhead increases
Solution Approach 1:
The terminal capability information transmission serves multiple functions: it establishes compatibility assumptions for cross-carrier scheduling, enables stable operation determination, and provides network side with necessary information for proper scheduling. By making this capability indication universal and multi-functional, the patent avoids redundant signaling while ensuring operational stability
Data Source
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AI summary
A terminal assumes that support for cross carrier scheduling in which scheduling is applied across multiple carriers is mandatory when supporting scheduling targeted for a combination of multiple cells using single downlink control information, and transmits terminal capability information relating to scheduling based on the assumption.