Uplink Control Information Transmission Resource Overlap Handling
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Solution Overview
Problem
In Ultra Reliable and Low Latency Communication (URLLC) wireless systems, such as 5G, there is a challenge in transmitting uplink control information in real-time when the transmission resources for uplink data and uplink control information overlap in the time domain, particularly when the uplink data transmission resource is long, leading to conflicts and delays.
Innovation Solution
A method and device that determine overlapping transmission resources for uplink data and uplink control information and transmit the uplink control information on either resource, allowing for real-time transmission by either using piggyback mapping or adjusting transmission parameters such as power and resource allocation to ensure instant transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the transmission resource for uplink data is allocated to be long in the time domain, then the data transmission capacity is improved, but the transmission resource for uplink control information cannot be secured, leading to transmission conflicts and increased latency
Solution Approach 1:
The patent segments the time domain resources by dividing the long uplink data transmission resource into multiple parts, inserting uplink control information transmission opportunities within the segmented data resource. This allows both data and control information to share the time domain resources without complete overlap, resolving the conflict between data capacity and control information latency.
Solution Approach 2:
The patent introduces frequency domain resource allocation as an additional dimension to resolve the time domain conflict. By allocating different frequency resources for uplink data and uplink control information, the system allows simultaneous transmission in the time domain while maintaining resource separation, thus achieving both high data capacity and low control information latency.
2Speed
If the transmission resource for uplink control information is allocated separately, then real-time transmission is achieved, but resource conflict with uplink data occurs when both resources overlap in the time domain
Solution Approach 1:
The patent introduces resource allocation signaling as an intermediary mechanism that coordinates between uplink data and control information resources. The network device sends indication information to the terminal device, guiding the terminal to select appropriate resources and avoid conflicts, thus maintaining real-time control information transmission while eliminating resource conflicts.
Solution Approach 2:
The patent implements dynamic resource allocation where the uplink control information transmission resource is flexibly selected based on current system conditions. The terminal device can dynamically choose between different resource options (e.g., dedicated control resource vs. shared data resource) depending on the scheduling indication, enabling real-time transmission while adapting to avoid conflicts.
Data Source
AI summary
Provided in the present disclosure are an uplink control information transmission method and device. The method includes: determining that a first transmission resource corresponding to uplink data to be transmitted and a second transmission resource corresponding to uplink control information to be transmitted overlap in a time domain; and transmitting the uplink control information on the second transmission resource, and terminating transmission of the uplink data on the first transmission resource. Before transmitting the uplink control information on the second transmission resource, the method further includes: determining a type to which the uplink control information belongs according to a transmission parameter. The transmission parameter includes service type indication or configuration information, and the configuration information includes priority.