Terminal PDCCH PDSCH Transmission Scheme Configuration
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Solution Overview
Problem
Current radio communication systems, particularly in next-generation mobile communication systems like 5G, face challenges in configuring appropriate transmission schemes for physical downlink control channels (PDCCH) and physical downlink shared channels (PDSCH), leading to potential degradation in communication quality and throughput.
Innovation Solution
A terminal and base station configuration that includes a receiving section for PDCCH and PDSCH information, allowing the control section to determine and apply suitable transmission schemes such as single transmission/reception point, repetition transmission for multi-TRP, and single frequency network schemes for both channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a PDCCH reception method for higher reliability and high-speed movement is configured for a control resource set (CORESET), then communication reliability is improved, but the transmission scheme configuration for PDCCH and PDSCH is insufficient, leading to degradation in communication quality and reduction in throughput
Solution Approach 1:
The patent applies dynamics by enabling dynamic selection of transmission schemes (single TRP, multi-TRP repetition, SFN) based on real-time channel conditions, mobility state, and network configuration. The terminal can switch between different transmission schemes for PDCCH and PDSCH depending on the operational requirements, transforming a static transmission system into a dynamic one that adapts to changing conditions to optimize both reliability and throughput.
Solution Approach 2:
The patent changes key parameters including the number of transmission points (TRP), transmission repetition count, and frequency domain resource allocation based on channel conditions and mobility. By varying these parameters dynamically, the system can optimize the balance between reliability (through repetition and diversity) and throughput (through efficient resource utilization), resolving the contradiction between these two performance aspects.
2Adaptability or versatility
If multiple transmission schemes (single TRP, multi-TRP repetition, SFN) are implemented for PDCCH and PDSCH, then adaptability to different channel conditions is improved, but device complexity increases
Solution Approach 1:
The patent segments the transmission scheme configuration into separate manageable components: PDCCH transmission scheme configuration and PDSCH transmission scheme configuration. Each can be independently configured and selected. The terminal receives first information related to PDCCH transmission scheme and second information related to PDSCH transmission scheme, allowing modular configuration that reduces overall system complexity while maintaining multiple scheme options.
Solution Approach 2:
The patent applies preliminary action by pre-configuring multiple transmission schemes and their parameters before actual communication begins. The terminal stores configuration information for various transmission schemes (single TRP, multi-TRP repetition, SFN) and can quickly select from pre-prepared options based on current conditions, avoiding the need to compute and configure schemes in real-time, thus reducing operational complexity.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes a receiving section that receives at least one of first information related to a physical downlink control channel (PDCCH) transmission scheme and second information related to a physical downlink shared channel (PDSCH) transmission scheme, and a control section that determines, based on at least one of the first information and the second information, at least one of a first transmission scheme to be applied to reception of a PDCCH and a second transmission scheme to be applied to reception of a PDSCH. The first transmission scheme is any one of a PDCCH transmission scheme for single transmission/reception point (TRP), a transmission scheme for PDCCH repetition transmission for multi-TRP, and a single frequency network (SFN) PDCCH transmission scheme, and the second transmission scheme is any one of a PDSCH transmission scheme for single TRP, a transmission scheme for PDSCH repetition transmission for multi-TRP, and an SFN PDSCH transmission scheme. According to one aspect of the present disclosure, it is possible to appropriately configure a transmission scheme for a PDCCH and a PDSCH.