Uplink Control Resource Selection for 5G Carrier Aggregation
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Solution Overview
Problem
Current multicarrier communication systems face challenges in resource selection and Hybrid Automatic Repeat Request (HARQ) feedback determination, particularly in managing carrier aggregation and dual connectivity scenarios, which affect the efficiency and reliability of data transmission in 5G networks.
Innovation Solution
The implementation of advanced radio resource management techniques, including dynamic modulation and coding schemes, multi-connectivity operations, and tight interworking between 5G and LTE networks, enables efficient resource allocation and HARQ feedback mechanisms, optimizing data transmission across multiple carriers and connectivity modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation and dual connectivity are implemented to increase data transmission capacity, then network throughput and reliability are improved, but resource management complexity and system overhead increase
Solution Approach 1:
The patent segments the uplink control information by creating separate PUCCH resources for different component carriers and connectivity modes. This segmentation allows independent management and optimization of control resources for each carrier, reducing the overall complexity of resource management while maintaining support for multiple carriers and dual connectivity operations
Solution Approach 2:
The patent introduces a new dimension for resource organization by grouping PUCCH resources according to component carrier indices and connectivity modes. This dimensional organization enables systematic resource allocation and selection across multiple carriers, transforming the complex multi-dimensional resource management problem into a structured selection process based on predefined resource groups
2Reliability
If multiple PUCCH resources are allocated for different component carriers, then control information transmission reliability is improved, but resource overhead and system complexity increase
Solution Approach 1:
The patent creates universal PUCCH resource groups that can serve multiple component carriers and different connectivity modes (carrier aggregation and dual connectivity). Each resource group is designed to be multi-functional, capable of handling control information for various carriers through systematic selection based on carrier indices, thereby reducing the total number of dedicated resources needed while maintaining reliability
Solution Approach 2:
The patent employs parameter-based resource selection where PUCCH resources are selected based on parameters such as component carrier indices and connectivity mode identifiers. This parameter-driven approach enables dynamic and flexible resource allocation that adapts to different transmission scenarios, optimizing resource utilization and reducing overhead while ensuring reliable control information transmission
3Productivity
If dynamic resource selection based on component carrier indices is implemented, then resource utilization efficiency is improved, but processing complexity and latency increase
Solution Approach 1:
The patent performs preliminary organization of PUCCH resources into groups during system configuration, indexed by component carrier identifiers. This preliminary action creates a pre-structured resource mapping that enables direct index-based selection during transmission, avoiding complex real-time resource allocation decisions and reducing processing latency while maintaining high resource utilization efficiency
Data Source
AI summary
A wireless device may receive one or more messages. The one or more messages may comprise first configuration parameters of a periodic resource allocation, and second configuration parameters of one or more logical channels. Downlink control information may be received. The downlink control information may indicate a first radio resource. The first radio resource or the second radio resource may be selected as a selected resource based on a time difference between the first radio resource and a second radio resource of the periodic resource allocation. Data of the one or more logical channels in a transport block may be transmitted via the selected resource.