Uplink Control Information Multiplexing With PUSCH Repetitions
Solution Overview
Problem
Conventional wireless communication systems do not specify how uplink control information (UCI) can be multiplexed with uplink channel repetitions, particularly in cases where UCI overlaps with multiple sets of physical uplink shared channel (PUSCH) transmissions scheduled to carry aperiodic channel state information (A-CSI).
Innovation Solution
The described techniques provide a set of rules and configurations for determining how an uplink control message can be multiplexed with multiple repetitions of PUSCH transmissions associated with different beams. These configurations define conditions based on the length of PUSCH repetitions, relative arrangements of overlapping UCI messages, and the information carried by each PUSCH repetition, including A-CSI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional solutions are used for multiplexing UCI with PUSCH transmissions, then the system lacks defined rules for handling overlapping UCI messages with multiple PUSCH repetitions, but this results in increased device complexity and uncertainty in implementation
Solution Approach 1:
The patent applies parameter changes by introducing specific multiplexing rules that change the parameters of how UCI and PUSCH are handled. The rules define conditions based on PUSCH repetition length, relative timing arrangements, and information types (A-CSI), transforming the undefined multiplexing behavior into a structured set of configurable parameters that resolve implementation uncertainty while maintaining adaptability.
2Reliability
If multiple PUSCH repetitions are transmitted with different beams for reliability, then transmission reliability improves, but control signaling overhead increases due to lack of efficient UCI multiplexing
Solution Approach 1:
The patent applies merging by combining UCI messages with PUSCH repetitions in a structured manner. The multiplexing rules enable UCI to be embedded within PUSCH transmissions, merging control and data channels to reduce separate control signaling overhead while maintaining the reliability benefits of multiple beam-based PUSCH repetitions.
Solution Approach 2:
The patent applies universality by creating a multiplexing framework that handles multiple types of information (A-CSI, other control information) across multiple PUSCH repetitions with different beams. The unified set of rules provides multi-functional capability to handle various UCI types and PUSCH configurations through a single multiplexing mechanism, reducing overall control signaling requirements.
3Reliability
If UCI messages are transmitted separately from PUSCH repetitions, then control information reliability is maintained, but resource utilization efficiency decreases
Solution Approach 1:
The patent applies merging by integrating UCI messages within PUSCH repetitions according to defined multiplexing rules. This combination maintains control information reliability through the redundant PUSCH transmission structure while improving resource utilization by eliminating separate dedicated control channel resources.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. In some aspects, a user equipment (UE) may receive control signaling scheduling transmission of aperiodic channel state information (A-CSI) via a set of uplink transmission repetitions, the set of uplink transmission repetitions including a first set of repetitions associated with a first sounding reference signal (SRS) resource set and a second set of repetitions associated with a second SRS resource set. The UE may receive additional control signaling scheduling transmission of an uplink control channel message that overlaps in time with at least one uplink transmission repetition of the set of uplink transmission repetitions. The UE may multiplex the uplink control channel message with at least one uplink transmission repetition of the set of uplink transmission repetitions, and may transmit the set of uplink transmission repetitions including multiple repetitions of the A-CSI and the multiplexed uplink control channel message.