DCI Scheduling for 5G Transmission Overlap Prevention
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, the overlap of transmission resources between different services can lead to transmission failures, resulting in waste of processing and power resources.
Innovation Solution
A data transmission method where a network side device sends a first downlink control information (DCI) for scheduling a first transmission, ensuring that the time instant of sending the first DCI is not later than a time instant with a predetermined time duration T before the starting symbol of a second transmission, if the two transmissions satisfy specific preset conditions regarding priority and resource overlap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transmission resources are multiplexed to support multiple services, then resource utilization is improved, but transmission reliability deteriorates due to resource overlap and interference
Solution Approach 1:
The network device performs preliminary detection to determine whether resource overlap exists between first and second transmissions before actual transmission occurs. Based on this preliminary detection, the device proactively selects appropriate handling strategies (such as adjusting transmission parameters or selecting alternative resources) to prevent transmission failures, thereby maintaining high resource utilization while ensuring transmission reliability.
2Speed
If a terminal prepares and sends data for second transmission, then transmission speed is improved, but energy waste occurs when the transmission is interrupted by higher priority data
Solution Approach 1:
The terminal performs preliminary detection to identify resource overlap between first and second transmissions before the second transmission is fully prepared. When overlap is detected, the terminal proactively adjusts its preparation behavior for the second transmission, such as reducing preparation intensity or selecting alternative resources, thereby avoiding energy waste from preparing transmissions that would be interrupted anyway.
Solution Approach 2:
The terminal autonomously detects resource overlap conditions and self-adjusts its transmission preparation strategy without requiring external control signals. This self-service mechanism enables the terminal to optimize energy consumption by avoiding preparation of transmissions that would be interrupted by higher priority data, while maintaining efficient transmission when resources are available.
3Reliability
If the network device schedules second transmission with higher priority, then service quality is improved, but processing resource waste occurs due to interrupted first transmission
Solution Approach 1:
The network device performs preliminary detection to determine whether resource overlap exists between first and second transmissions before scheduling the second transmission. When overlap is detected, the device proactively adjusts scheduling decisions, such as selecting alternative time-frequency resources or modifying transmission parameters, thereby ensuring high-priority service quality while avoiding waste of processing resources on interrupted transmissions.
Data Source
AI summary
A data transmission method, a network side device and user equipment are provided. The method includes: sending a first downlink control information DCI for scheduling first transmission; wherein in a case that a relation between the first transmission and scheduled or configured second transmission satisfies a preset condition, a time instant of sending the first DCI is not later than a time instant with a time duration T before a starting symbol of the second transmission.