UCI Multiplexing on Full-Duplex PUSCH Repetitions
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Solution Overview
Problem
Existing wireless communication systems face challenges in improving signal reliability and reducing latency in complex environments, particularly in full duplex operations, due to issues with physical uplink shared channel (PUSCH) and physical uplink control channel (PUCCH) repetition in dynamic time division duplex configurations.
Innovation Solution
The technique involves multiplexing uplink control information (UCI) with physical uplink shared channels (PUSCH) in full duplex mode, allowing UEs to adapt UCI transmission by determining whether and how much UCI to drop, splitting UCI across multiple PUSCH repetitions, and adjusting transmission based on slot or symbol scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PUSCH and PUCCH repetition is used in multiple slots for reliability, then communication reliability is improved, but latency increases due to multiple slots being required
Solution Approach 1:
The patent applies dynamics by enabling flexible slot configuration where the number of slots for PUSCH repetition can be dynamically adjusted based on channel conditions and reliability requirements. The system transitions from fixed multiple-slot repetition to adaptive repetition where slots can be configured flexibly, allowing the system to achieve reliability through repetition when needed while reducing latency when conditions permit fewer repetitions.
2Productivity
If full duplex operation is implemented for latency reduction and throughput increase, then productivity is improved, but device complexity increases due to dynamic time division duplex configurations
Solution Approach 1:
The patent applies segmentation by dividing the full duplex operation into distinct time slots with specific purposes - some slots dedicated to PUSCH repetition for reliability and others to PUCCH for control information. This segmentation allows the complex full duplex system to be managed through structured, purpose-specific time divisions, reducing the operational complexity while maintaining high throughput benefits.
Solution Approach 2:
The patent applies universality by designing the time slot configuration to serve multiple functions - slots can be configured to carry both PUSCH data transmissions and PUCCH control information, with the same physical resources serving different purposes based on the slot type. This multi-functionality reduces the need for separate dedicated resources, thereby reducing overall system complexity while maintaining productivity.
3Speed
If UCI is multiplexed with PUSCH in full duplex mode, then UCI transmission speed is improved, but reliability may be affected due to resource constraints in FD slots
Solution Approach 1:
The patent applies segmentation by separating UCI transmission into different contexts - some UCI is multiplexed with PUSCH in full duplex slots for speed, while other UCI is transmitted in dedicated PUCCH slots for reliability. The system segments the UCI transmission strategy based on the type of control information and channel conditions, allowing fast transmission when resources permit while maintaining reliability through dedicated channels when needed.
Data Source
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AI summary
Certain aspects of the present disclosure provide techniques for multiplexing uplink control information on physical uplink shared channels in full duplex mode. An example method that may be performed by a UE includes: receiving scheduling information from a network entity, wherein: the scheduling information schedules, in a first full duplex (FD) slot of a plurality of slots, transmission of a first uplink (UL) data channel repetition of a plurality of UL data channel repetitions and uplink control information (UCI), and the FD slot comprises an UL subband for UL transmissions and a downlink (DL) subband for DL transmissions, multiplexing the first UL data channel repetition with the UCI to form a multiplexed transmission, and transmitting the multiplexed transmission in the FD slot.