Uplink Shared Channel Multiplexing for Variable Scheduling
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Solution Overview
Problem
In future radio communication systems, the variable transmission timing and duration of uplink data and control information can lead to a deterioration in communication quality when transmitted using an uplink shared channel, as existing processing methods are not adapted for flexible scheduling.
Innovation Solution
A user terminal is designed to transmit uplink data and control information using an uplink shared channel over multiple slots, with control mechanisms for multiplexing uplink control information across these slots to maintain communication quality, employing techniques like rate matching and puncture processing to optimize bit allocation and channel utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the same transmission processing as legacy LTE systems is applied to UL data and UCI in future radio communication systems with variable scheduling, then implementation simplicity is maintained, but communication quality deteriorates
Solution Approach 1:
The patent applies dynamics by making the transmission processing method adaptable to different scheduling scenarios. The system dynamically selects between legacy processing (for fixed scheduling) and new processing (for variable scheduling), allowing the processing complexity to adjust based on the scheduling flexibility requirement while maintaining communication quality.
Solution Approach 2:
The patent changes the processing parameters based on the scheduling type. For variable scheduling, it applies rate matching processing that accounts for the variable nature of UL data and UCI transmissions, whereas legacy fixed scheduling uses traditional processing methods. This parameter adaptation resolves the contradiction by optimizing communication quality for each scheduling scenario.
2Adaptability or versatility
If variable transmission timing and duration are implemented for UL data and UCI, then scheduling flexibility is improved, but communication quality deteriorates without adapted processing
Solution Approach 1:
The patent makes the transmission processing dynamic by introducing a determination mechanism that adapts the processing method based on whether the scheduling is fixed or variable. This dynamic adaptation allows the system to maintain communication quality while supporting variable transmission timing and duration, as the processing is automatically adjusted to match the scheduling flexibility requirements.
Solution Approach 2:
The patent segments the transmission processing into distinct paths: one for fixed scheduling (legacy processing) and another for variable scheduling (new processing with rate matching). This segmentation allows each processing path to be optimized for its specific scheduling type, maintaining communication quality while enabling scheduling flexibility where needed.
3Reliability
If rate matching processing is applied to variable scheduling scenarios, then communication quality is maintained, but processing complexity increases
Solution Approach 1:
The patent applies parameter changes by introducing rate matching processing specifically for variable scheduling scenarios. The processing parameters (such as the number of bits to transmit) are dynamically adjusted based on the variable nature of UL data and UCI, maintaining communication quality while accounting for the increased processing requirements of flexible scheduling.
Solution Approach 2:
The system performs self-service by automatically determining whether rate matching processing is needed based on the scheduling type. The determination is made within the system itself without requiring external control, allowing the processing complexity to be applied only when necessary for variable scheduling, thus balancing quality maintenance with complexity management.
Data Source
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Figure 3A~3B
AI summary
To prevent deterioration of communication quality even when uplink data and uplink control information are transmitted by using an uplink shared channel in a future radio communication system, one aspect of a user terminal according to the present invention includes: a transmission section that transmits an uplink shared channel over multiple slots based on an instruction from a base station; and a control section that performs control to multiplex uplink control information on the uplink shared channel in at least one slot of the plurality of slots to transmit.