PUCCH Group Segmentation for Wireless Carrier Aggregation
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Solution Overview
Problem
Current multicarrier communication systems face challenges in efficiently managing physical uplink control channel (PUCCH) resources, particularly as the number of aggregated carriers and PUCCH payload increases, leading to high PUCCH load on primary cells and limited flexibility in resource allocation.
Innovation Solution
The implementation of multiple PUCCH groups, where cells are grouped to distribute PUCCH resources across secondary cells, reducing the load on primary cells and enabling flexible configuration of PUCCH groups and timing advance groups (TAGs) to optimize radio resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple carriers are aggregated to increase system capacity, then network throughput and coverage are improved, but PUCCH resource load on primary cells increases and resource allocation flexibility decreases
Solution Approach 1:
The patent segments the PUCCH resource management by dividing cells into multiple PUCCH groups. Each group is managed independently with its own PUCCH resources, allowing the system to handle multiple carriers without concentrating all PUCCH traffic on primary cells. This segmentation reduces the resource management complexity on primary cells while maintaining support for carrier aggregation.
Solution Approach 2:
The patent introduces a new dimension to PUCCH resource allocation by organizing cells into groups rather than managing each cell individually. This group-based organization creates an additional layer of structure that simplifies resource management across multiple carriers, transforming the complex one-to-one cell-resource mapping into a more manageable group-to-resource mapping.
2Ease of operation
If PUCCH resources are concentrated on primary cells to simplify management, then resource allocation is easier, but system capacity and flexibility are limited
Solution Approach 1:
By dividing cells into PUCCH groups with separate resource management, the patent maintains operational simplicity within each group while enabling flexible resource allocation across multiple groups. This segmentation allows the system to adapt resources to different traffic conditions and carrier configurations without requiring complex centralized management.
Solution Approach 2:
The PUCCH group structure provides universal applicability across different carrier aggregation scenarios. The same group-based framework can accommodate varying numbers of carriers, different traffic patterns, and diverse service requirements, making the resource allocation system both simple to operate and highly adaptable.
3Use of energy by moving object
If PUCCH groups are dynamically activated and deactivated to optimize resource utilization, then energy efficiency is improved, but control signaling overhead increases
Solution Approach 1:
The patent implements periodic activation and deactivation of PUCCH groups based on traffic conditions and carrier aggregation states. This periodic action allows user equipment to switch between active and inactive states for different PUCCH groups, significantly reducing power consumption during low-activity periods while maintaining the capability to quickly reactivate resources when needed.
Solution Approach 2:
The dynamic activation and deactivation mechanism allows the PUCCH group configuration to adapt to changing network conditions and traffic patterns. This dynamic approach enables the system to optimize power consumption in real-time while managing control signaling efficiently through event-triggered updates rather than continuous signaling.
Data Source
AI summary
Channel deactivation and control for wireless communications are described. A base station may communicate with a wireless device via one or more cells. The base station may determine a deactivation condition for a cell associated with a control channel and may alter behavior associated with at least one channel communication via another cell.