Uplink Control Information Transmission Adaptation for PUCCH-PUSCH Collision
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Solution Overview
Problem
The current NR communication system lacks a clear method for transmitting uplink control information (UCI) when a PUCCH with repeated transmission collides with a PUSCH in the same slot, leading to inefficiencies in UCI transmission.
Innovation Solution
A method where a terminal determines an encoded UCI bit sequence in the first transmission of UCI repetition and transmits it on a determined uplink channel, adapting to the transmission conditions of either PUCCH or PUSCH, ensuring accurate and efficient UCI transmission by truncating or repeating the sequence as needed to match available resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PUCCH with repeated transmission collides with PUSCH in the same slot, then the system can maintain both channels for transmission, but there is no clear method for transmitting UCI leading to transmission inefficiency
Solution Approach 1:
The patent applies dynamics by making the UCI transmission method adaptive to different collision scenarios. The terminal determines whether to multiplex UCI on PUSCH or drop PUCCH based on dynamic conditions (whether PUSCH is present in the slot), transforming a static undefined behavior into a dynamic decision-making process that optimizes transmission efficiency for each specific case
Solution Approach 2:
The patent applies preliminary action by establishing clear priority rules before the collision occurs. The specification preemptively defines that when PUCCH with repetition collides with PUSCH, the terminal should determine in advance whether to multiplex UCI on PUSCH or drop PUCCH, eliminating the need for complex real-time decisions during the collision and improving transmission efficiency
2Adaptability or versatility
If UCI is multiplexed on PUSCH when start symbols are the same, then transmission resources are utilized efficiently, but this solution is not applicable when PUCCH with repeated transmission collides with PUSCH
Solution Approach 1:
The patent applies universality by creating a comprehensive transmission method that covers multiple collision scenarios. The solution extends the existing UCI multiplexing approach to work not only when start symbols are the same but also when PUCCH with repetition collides with PUSCH, making the transmission method universally applicable across different collision types while maintaining good UCI transmission performance
Data Source
AI summary
The present application discloses a method and an apparatus for transmitting uplink control information (UCI), to resolve the issue of repeated transmissions of UCI in the prior art. In an embodiment of the present application, a terminal determines a bit sequence of coded UCI of a first transmission, the UCI being repeatedly transmitted on a PUCCH, and the terminal transmits the bit sequence of the coded UCI in a determined uplink channel in each subsequent retransmission of the UCI. A network side apparatus uses the same method to determine a bit sequence of coded UCI of a first transmission, and receives, via a determined uplink channel, a repeatedly transmitted bit sequence of the coded UCI. In the embodiments of the present application, a bit sequence of coded UCI is determined according to a channel of the UCI in a first transmission time slot.