Terminal Resource Selection Between Grant-Free and Grant-Based Uplink
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Solution Overview
Problem
The challenge in 5G mobile communication systems is how a terminal selects between grant-free and grant-based resources for data transmission when both are available simultaneously, as existing methods do not clearly define the resource selection process.
Innovation Solution
The terminal prioritizes data transmission on grant-free or grant-based resources based on service data type, priority, and transmission parameters, including delay, reliability, and resource matching, and may dynamically select resources to ensure high-priority data is transmitted first.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal is configured with both grant-free resource and grant-based resource, then the system can support diverse transmission scenarios, but the terminal cannot clearly select which resource to use for data transmission
Solution Approach 1:
The patent introduces a priority indication parameter that changes the state of resource selection by establishing a clear priority relationship between grant-free and grant-based resources. When the priority indication shows that grant-free resources have higher priority, the terminal selects grant-free resources for transmission, otherwise it selects grant-based resources. This parameter change resolves the ambiguity in resource selection while maintaining system versatility.
2Loss of time
If the terminal uses grant-free transmission method, then signaling interaction processes are reduced and latency is decreased, but the terminal cannot ensure reliable resource selection when both grant-free and grant-based resources are available
Solution Approach 1:
The patent applies preliminary action by pre-configuring the priority indication between grant-free and grant-based resources before data transmission occurs. The network side device configures this priority indication in advance, allowing the terminal to make reliable resource selection decisions without needing to perform complex real-time calculations or face ambiguous selection criteria during actual transmission.
3Productivity
If the terminal dynamically selects resources based on transmission parameters, then resource utilization is optimized, but the selection process becomes more complex
Solution Approach 1:
The patent simplifies the dynamic selection process by using parameter changes in the priority indication mechanism. Instead of requiring complex real-time analysis of multiple transmission parameters, the system pre-establishes priority relationships through parameter configuration, allowing the terminal to make efficient resource selections based on straightforward priority comparisons rather than complex decision algorithms.
Data Source
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AI summary
A data transmission method and a device are provided. The data transmission method is applied to a terminal and includes: in the case that both a grant-free resource and a grant-based resource are available for the terminal, choosing, by the terminal, to transmit service data on the grant-free resource preferentially; or choosing, by the terminal, to transmit service data on the grant-based resource preferentially; or choosing dynamically, by the terminal, to transmit service data on the grant-free resource and/or the grant-based resource.