PDSCH Transmission Mode Determination for Reliable Multi-TRP Reception
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Solution Overview
Problem
In a multi-TRP scenario of 5G communication, determining the specific transmission mode for a PDSCH scheduled by DCI is unclear, leading to potential reception errors and inefficiencies.
Innovation Solution
A method to determine the transmission mode of a PDSCH based on preset parameters, including the number of slot-based or mini-slot-based repetitions, frequency-domain division mode, number of TCI states, DMRS code division multiplexing groups, and maximum layers supported, using RRC, MAC CE, and DCI configurations to ensure accurate reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple transmission modes are supported in multi-TRP scenario, then system flexibility and adaptability are improved, but transmission reliability deteriorates due to unclear mode determination
Solution Approach 1:
The patent applies parameter changes by utilizing multiple parameters (number of slot-based or mini-slot-based repetitions, frequency-domain division mode, number of TCI states, DMRS code division multiplexing groups, and maximum layers supported) to dynamically determine the transmission mode. By changing and combining these parameters in different configurations, the system can adapt to various transmission scenarios while maintaining reliable PDSCH reception through clear mode determination rules.
2Measurement precision
If multiple parameters are used to determine transmission mode, then transmission precision is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring transmission mode determination rules and parameters through higher layer signaling (RRC, MAC CE) before actual PDSCH transmission. The terminal device receives and stores these configuration parameters in advance, so when PDSCH scheduling occurs, the device can quickly determine the transmission mode using the pre-established rules without performing complex real-time analysis, thus reducing processing complexity while maintaining determination precision.
Data Source
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AI summary
A transmission mode determining method, an information configuration method, and a device are provided. The transmission mode determining method includes: determining, based on first preset information, a transmission mode of a physical downlink shared channel PSDCH scheduled by one downlink control information DCI; where the first preset information is carried in at least one of radio resource control RRC, a media access control control element MAC CE, and the DCI.