Uplink Control Information Transmission Reliability
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Solution Overview
Problem
The existing 5G wireless communication systems face challenges in dynamically controlling the transmission reliability of uplink control information due to limited scheduling signaling overhead, leading to reduced reliability or wastage of air-interface resources, especially in scenarios with varying delay requirements.
Innovation Solution
A method that decouples the transmission reliability of uplink control information from the uplink physical-layer data channel by using a reference channel to determine the number of Resource Elements (REs) occupied by each control information bit, allowing flexible and dynamic control of transmission reliability without increasing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station dynamically adjusts the number of REs occupied by each control information bit in the uplink physical-layer data channel through scheduling signaling, then the transmission reliability of control information can be improved, but the signaling overhead increases
Solution Approach 1:
The patent extracts the control information transmission reliability control from the uplink physical-layer data channel scheduling signaling. By allowing control information to be transmitted on both the uplink physical-layer data channel and the uplink physical-layer control channel independently, the reliability control for control information is separated from the data channel scheduling, thereby reducing signaling overhead while maintaining transmission reliability.
Solution Approach 2:
The patent segments the control information transmission path into two independent channels: the uplink physical-layer data channel and the uplink physical-layer control channel. This segmentation allows independent optimization of each channel's resources and reliability parameters, enabling flexible control of transmission reliability without increasing overall signaling overhead.
2Productivity
If the scheduling signaling for uplink control information appears after the scheduling signaling for uplink physical-layer data channel, then the base station cannot consider requirements of uplink control information in the data channel scheduling, but this results in reduced control information transmission reliability
Solution Approach 1:
The patent enables the base station to pre-allocate resources and determine transmission parameters for control information on the uplink physical-layer control channel before the actual transmission. This preliminary action allows the base station to consider control information requirements in advance, ensuring transmission reliability even when scheduling signaling for control information arrives after data channel scheduling.
3Adaptability or versatility
If the number of REs occupied by each control information bit is tied to the uplink physical-layer data channel configuration, then signaling overhead is reduced, but transmission reliability of control information cannot be independently optimized for different application scenarios
Solution Approach 1:
The patent introduces dynamic and flexible control of RE allocation for control information on the uplink physical-layer control channel. The base station can independently adjust the number of REs occupied by control information bits based on different application scenarios (eMBB, URLLC, mMTC), enabling adaptive optimization of transmission reliability without wasting air-interface resources.
Data Source
AI summary
The present disclosure provides a method and device in user equipment and base station for radio communications. A first node receives a first signaling and a second signaling; transmits a first radio signal on the first channel. The first signaling and the second signaling respectively comprise first configuration information and second configuration information, and the first configuration information and the second configuration information are respectively for a first channel and a second channel; the first radio signal comprises a first sub-signal and a second sub-signal; a first bit block and a second bit block are respectively used to generate the first sub-signal and the second sub-signal. When control information is carried on an uplink physical-layer data channel, the above method can respectively control transmission reliability of the control information and the uplink physical-layer data channel more flexibly, thus improving transmission efficiency.