Terminal Device PUCCH Format Allocation for Multi-Cell Uplink Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current radio communication systems lack an efficient method for transmitting uplink control information in LTE networks, particularly in scenarios involving multiple serving cells and secondary cells.
Innovation Solution
The implementation of specific PUCCH formats and resource allocation strategies in terminal and base station devices, allowing for efficient transmission of uplink control information by utilizing different PUCCH formats and resources based on serving cell configurations and transmission modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple serving cells are configured for simultaneous transmission and reception, then communication capacity and data throughput are improved, but uplink control information transmission becomes inefficient and complex
Solution Approach 1:
The patent segments uplink control information into different types (HARQ-ACK, CSI, SR) and assigns them to different PUCCH formats and resources. This segmentation allows efficient handling of multiple control information types simultaneously across multiple serving cells, resolving the complexity issue while maintaining high communication capacity.
2Adaptability or versatility
If more than five serving cells are configured, then network coverage and service capability are expanded, but concrete transmission methods for uplink control information are insufficient
Solution Approach 1:
The patent establishes a universal PUCCH resource allocation framework that works across any number of serving cells (beyond the traditional five-cell limit). The method provides multi-functional capabilities by supporting different PUCCH formats (1, 1a, 1b, 2, 2a, 2b, 3, 4, 5) and resource types (dedicated, common, shared) that can be flexibly applied to expand network coverage while maintaining manageable transmission complexity.
3Productivity
If different PUCCH formats are used for different serving cells, then transmission efficiency is improved, but resource allocation complexity increases
Solution Approach 1:
The patent applies local quality by assigning specific PUCCH formats and resources to specific serving cells or cell groups based on their individual characteristics and control information requirements. This allows optimized transmission efficiency for each cell while the base station maintains centralized control over resource allocation, balancing local optimization with global management to prevent resource allocation complexity from becoming unmanageable.
Data Source
Figure 1
Figure 2
Figure 3A~3C
AI summary
Aspects of the disclosure relate to a terminal device including a transmission unit configured to transmit a HARQ-ACK using a first PUCCH resource and a PUCCH format (3) with respect to PDSCH transmission on a secondary cell having a cell index less than or equal to a first predetermined value, and transmit a HARQ-ACK by using a second PUCCH resource and a PUCCH format (4) with respect to PDSCH transmission on a secondary cell having a cell index greater than the first predetermined value. The first predetermined value may be the value of a fourth cell index when arranging the values of the cell indices set by a base station device in ascending order.