Uplink Control Information Multiplexing on PUSCH
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In future radio communication systems, such as NR, controlling the transmission of uplink control information and demodulation reference signals (DMRS) on the uplink shared channel (PUSCH) is challenging, especially when frequency hopping and flexible data allocation are applied, leading to difficulties in multiplexing UCI and DMRS, which can result in UCI delay and deteriorated communication quality.
Innovation Solution
The solution involves using a specific DMRS configuration and type, allowing frequency division multiplexing (FDM) of UCI and DMRS on PUSCH, and controlling the transmission based on the set DMRS type to simplify the rate matching process and reduce processing load, while allowing flexible control of UCI transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequency hopping and flexible data allocation are applied to UL channel, then frequency diversity gain and flexible control are improved, but the complexity of controlling DMRS and multiplexing UCI with PUSCH increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting DMRS configuration parameters (such as DMRS type, additional DMRS positions, and DMRS density) based on the PUSCH configuration and UCI transmission requirements. This allows the system to adapt to frequency hopping and flexible data allocation while maintaining manageable complexity through standardized parameter sets.
Solution Approach 2:
The patent implements dynamics by enabling flexible DMRS configuration that adapts to different PUSCH transmission scenarios. The DMRS parameters can be dynamically adjusted according to the specific transmission conditions, including frequency hopping patterns and UCI multiplexing requirements, allowing the system to optimize performance while managing complexity through conditional configuration rules.
2Productivity
If UCI is transmitted using PUSCH, then uplink control information transmission is improved, but the difficulty of controlling transmission of UCI and DMRS in the same channel increases
Solution Approach 1:
The patent applies segmentation by separating the control of UCI and DMRS transmission into distinct configuration parameters and procedures. The UCI multiplexing on PUSCH is controlled through separate parameters (such as uci-OnPuschEnabled, uci-OnPuschTransformPrecoder) that can be independently configured from DMRS parameters, making it easier to manage and control both transmissions simultaneously.
Solution Approach 2:
The patent uses intermediary mechanisms by introducing specific configuration parameters and signaling procedures that mediate between UCI and DMRS transmission control. These intermediaries (such as higher-layer parameters and DCI indicators) provide a structured way to control both UCI and DMRS in the PUSCH channel without direct interference, simplifying the overall control process.
3Adaptability or versatility
If flexible data allocation in units of symbols is applied, then data transmission flexibility is improved, but the complexity of rate matching process increases
Solution Approach 1:
The patent applies parameter changes by introducing configurable parameters that define the relationship between DMRS and data allocation (such as dmrs-Type, additionalDMRS-Position, and mappingType). These parameters enable flexible data allocation in units of symbols while maintaining manageable rate matching complexity through standardized parameter sets and predefined configuration rules.
Solution Approach 2:
The patent implements dynamics by enabling flexible DMRS configuration that adapts to different data allocation scenarios. The system can dynamically adjust DMRS parameters based on the specific transmission conditions, including symbol-level data allocation patterns, allowing optimized performance while managing rate matching complexity through conditional configuration rules.
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3
AI summary
In order to appropriately transmit uplink control information and a DMRS using at least an uplink shared channel, one aspect of the user terminal of the present disclosure includes a transmitting section that transmits uplink control information and a demodulation reference signal (DMRS) using an uplink shared channel set to one or more symbols, and a control section that controls transmission of the DMRS using a specific DMRS configuration.