Configured Grant UCI Mapping for Autonomous Uplink PUSCH
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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 UE concatenates CG-UCI and HARQ-ACK prior to coding and multiplexing, determines which UCI to omit based on importance, and maps UCIs based on priority, using DMRS resource elements to ensure efficient transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If another UCI type is added to PUSCH transmission beyond the existing three UCIs, then the control information capability is improved, but the specification and implementation complexity increases
Solution Approach 1:
The patent combines CG-UCI with existing UCI types (HARQ-ACK, CSI part 1, CSI part 2) into a unified multiplexing framework. By integrating CG-UCI into the existing three UCI multiplexing structure rather than creating a separate fourth UCI type, the system expands control information capability while avoiding proportional increases in specification complexity.
Solution Approach 2:
The patent makes the existing three UCI multiplexing mechanism universal by enabling it to accommodate CG-UCI alongside traditional UCI types. The same multiplexing rules, resource element mapping, and timing budget management that apply to HARQ-ACK, CSI part 1, and CSI part 2 are extended to CG-UCI, allowing one mechanism to serve multiple UCI types including the new configured grant uplink control information.
2Loss of time
If three UCIs are multiplexed in PUSCH transmission to control timing budget, then the timing control is improved, but the ability to transmit additional UCI types is limited
Solution Approach 1:
The patent merges CG-UCI into the existing three UCI multiplexing framework, combining it with HARQ-ACK, CSI part 1, and CSI part 2. This integration allows the system to maintain the established timing budget control mechanisms while expanding UCI transmission capability to include configured grant uplink control information.
Solution Approach 2:
The patent extends the universality of the three UCI multiplexing mechanism to accommodate CG-UCI. The same timing budget control, resource element allocation, and multiplexing rules that govern traditional UCIs are applied to CG-UCI, enabling the system to handle multiple UCI types with a unified timing control approach.
Data Source
AI summary
Embodiments include a computer readable storage medium, a user equipment, a method and an integrated circuit 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 one of mapping a concatenated bit sequence or omitting a portion of the CSI.