Uplink Control Information Mapping in Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting uplink control information, particularly in mapping acknowledgement information and channel state information to physical uplink shared channels, which affects performance and complexity.
Innovation Solution
A method for a user equipment to map uplink control information to a physical uplink shared channel by applying rate-matching or puncturing based on the size of acknowledgement information, with specific techniques for handling acknowledgement and channel state information, including determining resource allocation based on uplink downlink assignment indices and beta parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If rate-matching or puncturing is applied to map acknowledgement information to PUSCH based on information size, then mapping efficiency and resource utilization are improved, but processing complexity and computational overhead increase
Solution Approach 1:
The patent applies different mapping techniques (rate-matching vs. puncturing) based on the parameter of information size. When acknowledgement information size is large, rate-matching is used to maintain data integrity; when size is small, puncturing is used for faster processing. This dynamic parameter-based selection optimizes mapping efficiency while managing processing complexity.
Solution Approach 2:
The mapping method dynamically adapts based on the size of acknowledgement information. The system switches between rate-matching and puncturing techniques according to real-time conditions, making the mapping process flexible and efficient while avoiding unnecessary computational overhead for small payloads.
2Productivity
If uplink control information is transmitted on physical uplink shared channel, then resource utilization is improved, but interference with data transmission and reliability challenges arise
Solution Approach 1:
The patent segments the PUSCH resources to accommodate both data transmission and uplink control information (UCI). By dividing the available resources and applying appropriate mapping techniques, the system allows simultaneous transmission of data and control information while maintaining reliability through dedicated resource allocation and error handling mechanisms.
Solution Approach 2:
The patent uses mapping techniques as intermediary processes to reconcile the coexistence of data and control information on the same channel. Rate-matching and puncturing act as mediators that organize and separate UCI from data in the time-frequency domain, reducing interference while maintaining efficient resource utilization.
3Productivity
If multiple types of uplink control information are mapped simultaneously to PUSCH, then communication efficiency is improved, but mapping complexity and resource allocation difficulty increase
Solution Approach 1:
The patent applies different mapping strategies to different types of uplink control information based on their specific requirements. Acknowledgement information, channel state information, and scheduling requests are mapped using techniques suited to their characteristics, optimizing overall communication efficiency while managing complexity through localized optimization rather than uniform processing.
Data Source
AI summary
The present invention discloses a method of transmitting uplink control information by a user equipment in a wireless communication system and device for supporting the same. Specifically, the present invention discloses a method by which a user equipment maps uplink control information to a physical uplink shared channel when the user equipment intends to transmit the uplink control information on the physical uplink shared channel and transmission operation for the uplink control information based on the same.