PUSCH PDSCH Repetition Parameter Adaptation Across Slot Boundaries
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Solution Overview
Problem
Current wireless communication systems face challenges in achieving lower transmission latency and higher reliability for Ultra Reliable and Low Latency Communication (URLLC) traffics in 5G systems, particularly with PUSCH/PDSCH transmission across slot boundaries, leading to increased delay and reduced reliability.
Innovation Solution
A method that dynamically determines Tx/Rx parameters for PUSCH/PDSCH repetitions based on whether the transmission crosses a slot boundary or DL/UL switching point, allowing for separate configuration of parameters for different repetitions and using resource block sizes to determine target parameters, thereby reducing signaling overhead and improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PUSCH/PDSCH transmission is restricted within a slot boundary, then transmission reliability is maintained, but transmission latency increases and productivity decreases
Solution Approach 1:
The patent divides the transmission resource into multiple time sub-windows within a slot, allowing PUSCH/PDSCH repetitions to be scheduled across slot boundaries. Each sub-window represents a segment of the transmission opportunity, enabling flexible scheduling that can span slot boundaries while maintaining reliability through redundant repetitions.
Solution Approach 2:
The patent introduces dynamic parameter configuration where Tx/Rx parameters can differ for different repetitions based on whether they cross slot or DL/UL boundaries. This dynamic adaptation allows the system to optimize transmission parameters in real-time based on boundary conditions, reducing latency while maintaining reliability.
2Reliability
If more time-frequency resources are allocated for PUSCH/PDSCH transmission, then transmission reliability improves, but transmission delay increases
Solution Approach 1:
The patent pre-configures multiple time sub-windows and their associated parameters before transmission begins. This preliminary setup allows the system to quickly select appropriate transmission opportunities without extensive real-time negotiation, reducing delay while ensuring sufficient resources are allocated for reliable transmission through multiple repetitions.
Solution Approach 2:
The patent enables different Tx/Rx parameters to be applied to different repetitions based on their timing characteristics. By changing parameters dynamically according to whether repetitions cross boundaries, the system optimizes resource usage efficiency, achieving reliable transmission without unnecessarily increasing total transmission delay.
3Adaptability or versatility
If separate Tx/Rx parameters are configured for different repetitions, then transmission adaptability improves, but signaling overhead increases
Solution Approach 1:
The patent applies different parameters only where necessary - specifically for repetitions that cross slot or DL/UL boundaries - while using default parameters for others. This localized differentiation provides adaptability exactly where boundary conditions require it, without unnecessarily increasing signaling overhead for all repetitions.
Solution Approach 2:
The patent implements partial parameter differentiation by applying separate Tx/Rx parameters only to specific repetitions that need them (those crossing boundaries), rather than configuring all repetitions individually. This partial action approach achieves necessary adaptability while minimizing signaling overhead.
Data Source
AI summary
The present disclosure provides a method and device in User Equipment (UE) and base station for wireless communication. A UE receives a first signaling, and operates a first radio signal and a second radio signal respectively in a first time-frequency resource block and a second time-frequency resource block. The first signaling is used to determine N time sub-windows, the N time sub-windows being reserved for a first bit block; the first radio signal and the second radio signal respectively carry two repetitions of transmission of the first bit block; the first radio signal corresponds to a first parameter, while the second radio signal corresponds to a target parameter, the target parameter being either the first parameter or a second parameter.