CG PUSCH Uplink Control for Multi-Codeword Transmission
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately and efficiently performing signal transmission and reception processes.
Innovation Solution
A method and apparatus for transmitting and receiving signals in a wireless communication system, involving the configuration of codewords (CWs) for uplink transmission, generation of control information based on the number of CWs, and transmission of this information through a physical uplink shared channel, with specific configurations for hybrid automatic repeat request, new data indicator, and redundancy version fields, allowing for efficient signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of codewords (CWs) is increased for CG PUSCH transmission, then the data transmission capacity is improved, but the complexity of configuring and managing HARQ processes, NDI fields, and RV fields increases
Solution Approach 1:
The patent segments the control information configuration by distinguishing between common fields (HARQ process number, NDI) that are shared across multiple CWs and individual fields (RV) that are specific to each CW. This segmentation allows the system to manage multiple CWs efficiently by applying different configuration strategies to different types of control information, reducing overall complexity while maintaining high data transmission capacity
Solution Approach 2:
The patent applies universality by making certain control fields (HARQ process number, NDI) common to multiple CWs rather than duplicating them for each CW. This multi-functional approach allows a single field configuration to serve multiple codewords simultaneously, reducing the total number of configuration parameters needed and simplifying the control information structure while supporting transmission of multiple CWs for enhanced data capacity
2Reliability
If individual configuration of NDI and RV fields is provided for each CW, then the transmission reliability is improved, but the signaling overhead and processing complexity increase
Solution Approach 1:
The patent applies local quality by providing individual RV field configuration for each CW while using common NDI field configuration across multiple CWs. This differentiated approach ensures that critical reliability parameters (RV) are individually managed for each codeword to maintain transmission reliability, while non-critical parameters (NDI) are efficiently managed commonly across multiple CWs to reduce signaling overhead
Solution Approach 2:
The patent implements partial individual configuration by applying individual field configuration only where necessary (RV fields for each CW) rather than universally for all control fields. This partial action approach maintains transmission reliability for critical parameters while avoiding the excessive signaling overhead that would result from individual configuration of all control information fields for each CW
3Measurement precision
If CG UCI includes information about the number of CWs, then the accuracy of signal transmission is improved, but the size of control information and processing complexity increase
Solution Approach 1:
The patent applies preliminary action by having the UE determine and report the number of CWs to be transmitted in advance through CG UCI. This advance notification allows the gNB to prepare appropriate reception and processing configurations before the actual data transmission occurs, ensuring accurate signal transmission while enabling efficient resource allocation and reducing real-time processing complexity
Data Source
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AI summary
A method by which a terminal transmits signals in a wireless communication system, according to at least one from among embodiments disclosed in the present specification, comprises: receiving configured grant (CG) configuration information for CG-based uplink transmission; determining the number of codewords (CWs) of a CG physical uplink shared channel (PUSCH) to be transmitted on the basis of the CG configuration information; generating CG-uplink control information (UCI) on the basis of the determined number of CWs; and transmitting the CG-UCI through the CG PUSCH including one or two or more CWs, wherein the CG-UCI can include information related to the number of CWs determined by the terminal.