Uplink Control Information Multiplexing Across Directional Beams
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Solution Overview
Problem
Current wireless communication systems, such as 4G and 5G, face challenges in supporting uplink operations, particularly multiplexing uplink communications, over repeated physical channels like PUCCH or PUSCH, especially when using diverse multiple directional beams.
Innovation Solution
The described techniques configure user equipment (UE) to multiplex uplink control information (UCI) over repeated physical uplink channels and disparate directional beams. This involves determining sets of repetitions for uplink data channels associated with different directional beams and multiplexing UCI with these channels based on their repetitions, ensuring timing boundaries and resource overlaps are satisfied.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink communications are multiplexed over repeated physical channels with diverse directional beams, then communication efficiency and reliability are improved, but system complexity increases
Solution Approach 1:
The patent segments the multiplexing process into distinct determination steps: first determining whether to multiplex based on timing boundary conditions, then determining resource allocation based on overlap conditions. This segmentation simplifies the overall complexity by breaking down the decision-making process into manageable, independent evaluations.
Solution Approach 2:
The patent performs preliminary determination of timing boundary satisfaction before proceeding to resource overlap determination. This preliminary action allows the system to early-stage filter out cases that don't meet basic timing requirements, reducing subsequent processing complexity and enabling more reliable multiplexing decisions.
2Reliability
If timing boundary conditions are strictly enforced for multiplexing, then transmission reliability is improved, but transmission latency increases
Solution Approach 1:
The patent applies partial action by enforcing timing boundary conditions only when necessary for reliable multiplexing, rather than universally. The system evaluates timing boundaries as one condition among others (including resource overlap), and proceeds with multiplexing when conditions are satisfied, thereby reducing unnecessary latency while maintaining reliability where needed.
3Productivity
If resource overlap conditions are evaluated for multiplexing, then resource utilization efficiency is improved, but processing complexity increases
Solution Approach 1:
The patent segments the resource evaluation process into distinct phases: timing boundary determination followed by resource overlap determination. This segmentation allows the system to efficiently evaluate resource overlap only after timing conditions are met, improving resource utilization while managing processing complexity through structured, sequential evaluation.
Solution Approach 2:
The patent performs preliminary timing boundary checks before evaluating resource overlap conditions. This preliminary action reduces the number of full resource overlap evaluations needed, as many cases can be quickly dismissed based on timing criteria alone, thereby improving overall resource utilization efficiency without proportionally increasing processing complexity.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A communication device, which may be otherwise known as a user equipment (UE) may determine a set of repetitions of a first uplink data channel associated with a first directional beam and a set of repetitions of a second uplink data channel associated with a second directional beam different from the first directional beam. The UE may multiplex an uplink transmission associated with an uplink control channel with one or both of the first uplink data channel and the second uplink data channel, based on the set of repetitions of the first uplink data channel and the set of repetitions of the second uplink data channel. As a result, the UE may transmit the multiplexed uplink transmission on one or both of the first uplink data channel and the second uplink data channel.