Sidelink Feedback Resource Selection in 5G Networks
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Solution Overview
Problem
Current mobile communication networks face challenges in efficiently managing wireless devices with multiple technologies and capabilities, particularly in 5G networks, where base stations need to communicate with a diverse range of devices supporting different releases and capabilities, leading to complexities in resource allocation and traffic management.
Innovation Solution
The implementation of advanced protocols and configurations within the New Radio (NR) framework, including bandwidth part management, carrier aggregation, and dynamic resource allocation, allows for flexible communication with wireless devices across various technologies and capabilities, optimizing resource usage and traffic handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If base stations communicate with diverse wireless devices supporting different releases and capabilities, then network compatibility and coverage are improved, but resource allocation complexity and management difficulty increase
Solution Approach 1:
The patent segments the sidelink resource pool into dedicated feedback resources and data transmission resources. By dividing the resource pool and assigning specific resources for HARQ feedback separately from data transmission, the system simplifies resource management for diverse devices while maintaining network compatibility across different 5G releases and capabilities.
2Productivity
If feedback resources are not properly allocated in sidelink communication, then resource utilization efficiency decreases, but implementing complex allocation protocols increases system complexity
Solution Approach 1:
The patent implements self-service by enabling user equipment to autonomously select and determine feedback resources from the sidelink resource pool based on pre-configured parameters and rules. This self-determination mechanism eliminates the need for complex centralized allocation protocols while improving resource utilization efficiency, as devices independently manage their feedback resource assignments without requiring complex coordination with base stations.
Data Source
AI summary
A wireless device receives configuration parameters comprising an indication of a sidelink resource pool comprising first feedback radio resources and second feedback radio resources, a first feedback parameter for selecting the first feedback radio resources of the sidelink resource pool, and a second feedback parameter for selecting the second feedback radio resources of the sidelink resource pool. The wireless device receives a sidelink control information (SCI). The wireless device selects, based on the SCI, one or more radio resources from the first feedback radio resources based on the first feedback parameter or the second feedback radio resources based on the second feedback parameter. The wireless device transmits a hybrid automatic repeat request (HARQ) feedback for a received sidelink transmission via the selected one or more radio resources.