Terminal PUSCH Repetition Control in Multi-TRP
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Solution Overview
Problem
In next-generation mobile communication systems, particularly in NR specifications, there is a lack of comprehensive study on how to control PUSCH repetition transmission in multi-TRP environments, which can lead to throughput reduction and communication quality degradation if not appropriately managed.
Innovation Solution
A terminal is designed with a receiving section to receive single downlink control information (DCI) for multiple uplink shared channels (PUSCHs) and a control section that controls the transmission of these PUSCHs based on an extended precoding information and number of layers field included in the DCI. The control section assumes independent configuration of the number of antenna ports for each PUSCH.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PUSCH repetition transmission is performed in multi-TRP without appropriate control, then transmission diversity is improved, but throughput reduction and communication quality degradation occur
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the number of antenna ports for each PUSCH based on the extended precoding information and number of layers field in DCI. This allows the system to optimize transmission parameters for multi-TRP scenarios, ensuring both reliability and throughput are maintained through adaptive parameter configuration rather than fixed settings.
Solution Approach 2:
The invention implements dynamics by enabling the terminal to independently configure the number of antenna ports for each PUSCH transmission. This dynamic configuration allows the system to adapt transmission parameters in real-time based on channel conditions and multi-TRP requirements, preventing both throughput reduction and communication quality degradation.
2Ease of operation
If single DCI is used to control multiple PUSCHs, then control efficiency is improved, but configuration complexity increases
Solution Approach 1:
The patent applies universality by using a single DCI message to control multiple PUSCH transmissions. The extended precoding information and number of layers field in the DCI provides universal configuration that can be applied across multiple PUSCHs, simplifying the control process while maintaining the ability to independently configure antenna ports for each transmission.
Solution Approach 2:
The invention uses segmentation by dividing the configuration into terminal-controlled parameters (number of antenna ports per PUSCH) and network-controlled parameters (extended precoding information in DCI). This segmentation allows the terminal to independently manage configuration complexity while benefiting from unified DCI-based control, effectively resolving the contradiction between control efficiency and configuration complexity.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes a receiving section that receives single downlink control information (DCI) for a plurality of uplink shared channels (Physical Uplink Shared Channels (PUSCHs)), and a control section that controls transmission of the plurality of PUSCHs on the basis of an extended precoding information and number of layers field included in the DCI, wherein the control section assumes that the number of antenna ports is independently configured for each of the plurality of PUSCHs. According to one aspect of the present disclosure, it is possible to appropriately control PUSCH repetition transmission even when multi-TRP is applied.