Dynamic UCI Transmission on Non-Orthogonal PUCCH and PUSCH
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Solution Overview
Problem
In 5G wireless communication systems, particularly in the new air interface Release 16, the challenge is to ensure higher reliability and lower latency for Ultra Reliable and Low Latency Communication (URLLC) services when the Physical Uplink Control Channel (PUCCH) is not orthogonal to the Physical Uplink Shared Channel (PUSCH) in the time domain, as existing methods may not guarantee transmission reliability of UCI.
Innovation Solution
A method where a user equipment determines a first time-frequency resource group for a first bit block and a second time-frequency resource group for a second bit block, with the timing relationship between signaling determining whether the first bit block is transmitted in the second time-frequency resource group, allowing for non-orthogonal time domain resources, ensuring reliable UCI transmission by considering the scheduling of PUSCH based on the timing of trigger signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UCI is transmitted on PUSCH when PUCCH and PUSCH are non-orthogonal in time domain, then resource utilization is improved, but transmission reliability of UCI deteriorates
Solution Approach 1:
The patent implements dynamic resource allocation by determining whether to transmit UCI on PUCCH or PUSCH based on the timing relationship between trigger signals. When the timing relationship indicates orthogonal resources, UCI is transmitted on PUCCH for high reliability. When resources are non-orthogonal, UCI is transmitted on PUSCH to improve resource utilization. This dynamic switching resolves the contradiction between reliability and resource utilization.
Solution Approach 2:
The patent changes the transmission parameter (transmission channel) based on the timing relationship parameter. By evaluating the timing relationship between trigger signals, the system dynamically selects whether to use PUCCH or PUSCH for UCI transmission, thereby adapting to different channel conditions and resolving the contradiction between reliability requirements and resource efficiency.
2Productivity
If PUCCH and PUSCH use non-orthogonal time domain resources, then spectrum efficiency is improved, but interference between channels increases
Solution Approach 1:
The timing relationship between trigger signals serves as an intermediary mechanism to manage the conflict between PUCCH and PUSCH transmissions. By using the timing relationship as a decision criterion, the system determines whether non-orthogonal resource allocation is acceptable, thereby controlling interference while maintaining spectrum efficiency.
Solution Approach 2:
The patent dynamically adjusts resource allocation based on timing relationships. When trigger signals indicate orthogonal resources, both PUCCH and PUSCH can transmit simultaneously without harmful interference. When resources are non-orthogonal, the system adjusts transmission decisions to balance spectrum efficiency and interference management.
3Reliability
If UCI transmission reliability is enhanced by using dedicated PUCCH resources, then transmission reliability is improved, but resource flexibility deteriorates
Solution Approach 1:
The patent makes the uplink transmission system multi-functional by enabling UCI to be transmitted on both PUCCH and PUSCH depending on conditions. This universality allows the system to maintain high reliability through dedicated PUCCH resources when needed, while also utilizing PUSCH resources for flexible resource allocation and improved spectrum efficiency when appropriate.
Solution Approach 2:
The system dynamically switches between dedicated PUCCH resources and shared PUSCH resources based on the timing relationship between trigger signals. This dynamic resource allocation maintains transmission reliability while improving resource flexibility and adaptability to different traffic conditions.
Data Source
AI summary
The discloses a method and device in a user equipment and a base station for wireless communication. The user equipment receives a first signaling, wherein the first signaling is used to determine a first time-frequency resource group, and the first time-frequency resource group is reserved for a first bit block; receives a second signaling, wherein the second signaling is used to determine a second time-frequency resource group, and the second time-frequency resource group is reserved for a second bit block; and transmits the first bit block and the second bit block in the second time-frequency resource group, or transmits only the second bit block. Time domain resource(s) occupied by the first time-frequency resource group and the second time-frequency resource group are non-orthogonal; a timing relationship between the first signaling and the second signaling is used to determine whether the first bit block is transmitted in the second time-frequency resource group.