Autonomous Uplink UCI Multiplexing with DMRS-First CG-UCI Mapping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing 5G NR-U systems face challenges in efficiently prioritizing and mapping uplink control information (UCI) transmissions when the total number of UCI types exceeds three, leading to increased specification and implementation complexity.
Innovation Solution
The solution involves concatenating CG-UCI and HARQ-ACK before coding and multiplexing, determining the priority of UCIs to omit less important information, and mapping UCIs based on priority, with CG-UCI mapped immediately after the DMRS resource element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If another UCI type is added to PUSCH transmission, then the capability to control timing budget is improved, but specification and implementation complexity increases
Solution Approach 1:
The patent combines CG-UCI with existing UCI types (HARQ-ACK and CSI) into a unified multiplexing framework. By merging the control information types into a single multiplexed structure on the PUSCH, the system achieves enhanced control capability without proportionally increasing complexity, as the same multiplexing mechanisms are reused for all UCI types.
Solution Approach 2:
The existing PUSCH multiplexing mechanism is designed to handle multiple UCI types universally. The same resource allocation and multiplexing procedures used for HARQ-ACK and CSI are extended to accommodate CG-UCI, making the system more versatile without requiring separate dedicated handling for each UCI type.
2Loss of time
If three UCIs are multiplexed in PUSCH transmission, then the timing budget control is optimized, but the mapping complexity increases when exceeding three UCI types
Solution Approach 1:
The patent segments the UCI mapping process into priority-based stages. UCIs are first categorized by priority level, then mapped to resource elements in sequential stages. This segmentation allows the system to handle more than three UCI types by processing them in manageable groups according to their priority, reducing the overall mapping complexity compared to simultaneous handling of all UCIs.
Solution Approach 2:
Different UCIs are assigned different mapping priorities and resource allocation characteristics based on their local importance. Critical UCIs receive higher priority mapping while less critical UCIs are mapped subsequently. This local differentiation of quality ensures timely transmission of essential control information while managing the complexity of mapping multiple UCI types.
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
Embodiments include a processor, a method and a base station that perform operations. The operations include generating configured grant uplink control information (CG-UCI), generating hybrid automatic repeat request acknowledgement (HARQ-ACK) information, generating channel state information (CSI) and mapping the CG-UCI, HARQ-ACK, and CSI to resource elements (REs) in resource blocks (RBs) of a configured grant physical uplink shared channel (PUSCH) transmission, wherein the PUSCH transmission includes a demodulation reference signal (DMRS) and wherein the mapping includes mapping a concatenated bit sequence, concatenating the CG-UCI bits and the HARQ-ACK bits to form the concatenated bit sequence wherein bits of CG-UCI precede bits of the HARQ-ACK in the concatenated bit sequence, encoding the concatenated bit sequence, and attaching a cyclic redundancy check, CRC, wherein the concatenating the CG-UCI bits and the HARQ-ACK bits occurs prior to the encoding and the attaching.