PUCCH Resource Allocation Across Multiple Cells for CSI Reporting
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing uplink control information transmission in multi-carrier networks, particularly with the increasing number of carriers and carriers, leading to high load on primary cells and limited flexibility in resource allocation.
Innovation Solution
Implementing carrier aggregation (CA) and dual connectivity (DC) with multiple timing advance groups (TAGs) and physical uplink control channel (PUCCH) groups to distribute uplink control information across multiple cells, reducing the load on primary cells and enhancing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation with multiple cells is implemented, then network capacity and spectral efficiency are improved, but the load on primary cells increases and device complexity increases
Solution Approach 1:
The patent segments the uplink control information transmission by introducing secondary PUCCH cells alongside the primary PUCCH cell. This divides the control channel load across multiple cells, allowing the primary cell to handle only a portion of the total control information while secondary cells handle other portions, thereby reducing the burden on any single cell and enabling higher network capacity without excessive complexity increase
2Use of energy by moving object
If more component carriers are aggregated, then spectral efficiency improves, but PUCCH resource load on primary cell increases
Solution Approach 1:
The patent segments the PUCCH resource load by configuring multiple PUCCH cells that can transmit control information for different component carriers. Instead of concentrating all PUCCH resources on a single primary cell, the system distributes them across multiple cells, each handling control information for specific carriers, thereby reducing the PUCCH resource load on any individual cell while maintaining high spectral efficiency through carrier aggregation
3Device complexity
If traditional single PUCCH cell configuration is used, then device complexity is minimized, but flexibility in resource allocation is limited
Solution Approach 1:
The patent introduces dynamic flexibility by allowing the network to dynamically configure and activate multiple PUCCH cells based on current traffic conditions and carrier aggregation needs. The system can dynamically select which PUCCH cells to activate and how to allocate resources among them, providing adaptability and versatility in resource allocation while maintaining manageable device complexity through controlled multi-cell operation
Data Source
AI summary
A physical uplink control channel (PUCCH) may comprise a plurality of sets of PUCCH resource blocks overlapping in time. A plurality of channel state information (CSI) reports may be used for transmission via the PUCCH resource blocks. Transmission of at least one CSI report for transmission may use PUCCH resource blocks based on a size of the CSI report and size of the sets of PUCCH resource blocks.