Terminal PUCCH Resource Mapping for Multi-Panel UL Control
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Solution Overview
Problem
In future radio communication systems, the appropriate control of uplink (UL) transmission using multiple panels (or beams) for simultaneous transmission is not sufficiently addressed, leading to potential degradation in system performance such as reduced throughput.
Innovation Solution
A terminal is equipped with a receiving section to receive configuration information related to channel state information (CSI), hybrid automatic repeat request acknowledgement (HARQ-ACK), and scheduling request (SR), and a control section that determines the Physical Uplink Control Channel (PUCCH) resource for mapping CSI and HARQ-ACK or SR in the same time domain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If simultaneous UL transmission using a plurality of panels is performed, then UL throughput and reliability are improved, but system performance degradation occurs due to insufficient control mechanisms
Solution Approach 1:
The patent segments the control of simultaneous UL transmission by introducing separate configuration information for different panels. The terminal receives first configuration information for a first panel and second configuration information for a second panel, allowing independent control of each panel's transmission parameters while maintaining overall system coordination.
Solution Approach 2:
The patent implements dynamic control of simultaneous UL transmission by enabling the terminal to determine PUCCH resources based on received configuration information. The terminal can dynamically select which panels to activate and how to allocate resources based on real-time system conditions, preventing performance degradation while maximizing throughput.
2Productivity
If multiple panels are used for simultaneous transmission, then transmission capacity is increased, but control complexity increases
Solution Approach 1:
The patent introduces configuration information as an intermediary mechanism between the base station and terminal. This configuration information acts as a mediator that carries control parameters for multiple panels, allowing the terminal to manage complexity by receiving pre-processed control instructions rather than independently managing each panel's transmission parameters.
Solution Approach 2:
The patent makes the configuration information structure universal by designing it to handle multiple panels through a standardized format. The same configuration mechanism can manage any number of panels by simply adding more panel-specific configuration entries, avoiding the need for different control approaches for different numbers of panels.
3Reliability
If PUCCH resources are determined based on multiple configuration information, then UL transmission control is improved, but processing time increases
Solution Approach 1:
The patent applies preliminary action by having the base station prepare and transmit configuration information for multiple panels in advance. The terminal receives this pre-configured information and can determine PUCCH resources based on pre-processed data, reducing the processing time required during actual transmission control operations.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes a receiving section that receives first configuration information related to channel state information (CSI), second configuration information related to a hybrid automatic repeat request acknowledgement (HARQ-ACK) or a scheduling request (SR), and third configuration information related to simultaneous transmission of physical uplink control channels (PUCCHs) using a plurality of panels, and a control section that determines, based on the first configuration information, the second configuration information, and the third information, a PUCCH resource to which the CSI and the HARQ-ACK or the SR in a same time domain are mapped. According to one aspect of the present disclosure, even when UL transmission is performed by using a plurality of panels, it is possible to appropriately control the UL transmission.