UCI Multiplexing Rules for Full-Duplex Beam Conflicts
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing unpaired beam issues for uplink control information (UCI) resources during full-duplex operations, leading to interference and reduced communication quality.
Innovation Solution
The system implements multiplexing rules for UCI transmissions, allowing UEs and base stations to determine and utilize appropriate uplink resources and beams for full-duplex communication, resolving unpaired beam issues and enhancing communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a UE is configured to monitor both Type 1 and Type 2 PDCCH and both are detected, then the UE can receive downlink data efficiently, but the UE may not be able to transmit uplink data at the same time due to half-duplex constraint
Solution Approach 1:
The patent implements dynamic switching between different PDCCH monitoring modes (Type 1 and Type 2) and dynamic selection of PUCCH resources based on detected DCI formats. The system adapts its behavior in real-time based on the received downlink assignment, allowing the UE to optimize between downlink reception and uplink transmission capabilities dynamically rather than being fixed in one mode.
Solution Approach 2:
The patent changes the PUCCH resource parameters (resource index, time-frequency resources) based on the detected DCI format type. When Type 1 PDCCH is detected, one set of PUCCH parameters is used; when Type 2 PDCCH is detected, a different set of parameters is applied. This parameter adaptation resolves the contradiction by allowing flexible resource allocation that accommodates both downlink and uplink requirements.
2Productivity
If the network schedules PDSCH and PUSCH in the same slot, then resource utilization is maximized, but the UE cannot transmit and receive simultaneously due to half-duplex constraint
Solution Approach 1:
The patent segments the PUCCH resource selection based on the type of PDCCH detected (Type 1 or Type 2). By dividing the PUCCH resources into different sets corresponding to different DCI formats, the system can selectively activate appropriate uplink resources that are compatible with the detected downlink assignment, avoiding conflicts that would arise from simultaneous transmission and reception.
Solution Approach 2:
The patent uses the detected DCI format type as an intermediary to mediate between the downlink PDSCH reception and uplink PUSCH transmission. The DCI format detection acts as a control signal that determines which PUCCH resources should be used, thereby coordinating the timing and resources of uplink transmission to avoid conflicts with ongoing downlink reception in the same slot.
3Device complexity
If the UE monitors only Type 1 PDCCH, then the UE structure can be simplified, but the adaptability to different scheduling modes is reduced
Solution Approach 1:
The patent implements a universal PUCCH resource selection mechanism that works with both Type 1 and Type 2 PDCCH monitoring. By designing the PUCCH resource indication to be format-agnostic and allowing dynamic selection based on detected DCI type, the system achieves multi-functionality where the same UE architecture can handle different scheduling modes without requiring separate dedicated structures for each type.
Data Source
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AI summary
Apparatus, methods, and computer program products for PHY priority for wireless communications are provided. An example apparatus may multiplex a first uplink control information transmission based on a first uplink resource and a second uplink control information transmission based on a second uplink resource that overlaps in time with the first uplink resource, at least one of the first uplink resource and the second uplink resource being for full-duplex communication. The example apparatus may determine, based on applying a multiplexing rule on the full-duplex communication, whether to use the first uplink resource associated with a first beam or the second uplink resource associated with a second beam. The example apparatus may transmit a multiplexed uplink control information transmission using a determined uplink resource based on the multiplexing rule.