Bandwidth Part Configuration for Dynamic Carrier Aggregation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current multicarrier communication systems face challenges in efficiently managing carrier aggregation, especially in scenarios requiring dynamic modulation and coding schemes, and interworking between different radio access technologies like 5G and LTE, which affects performance and power consumption.
Innovation Solution
The implementation of advanced multicarrier OFDM systems with dynamic modulation and coding, along with mechanisms for carrier aggregation, secondary cell activation/deactivation, and tight interworking between 5G and LTE networks, enables efficient resource management and improved performance by optimizing radio resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation with multiple component carriers is implemented to increase bandwidth and data rate, then network capacity and throughput are improved, but device complexity and power consumption increase
Solution Approach 1:
The patent segments the wide bandwidth into multiple component carriers (CCs) that can be independently configured and managed. Each CC operates as a separate entity with its own bandwidth part (BWP) configuration, allowing the system to handle large bandwidth requirements by dividing them into manageable chunks. This segmentation reduces device complexity by enabling selective activation and independent optimization of each component carrier.
Solution Approach 2:
The patent implements dynamic bandwidth part (BWP) configuration where the network can dynamically activate or deactivate specific BWPs on component carriers based on traffic demands. This dynamic adjustment allows the system to adapt to varying throughput requirements while minimizing power consumption and device complexity by only activating necessary resources when needed.
2Use of energy by moving object
If dynamic bandwidth part configuration is used to optimize resource utilization, then energy efficiency is improved, but signaling overhead and configuration complexity increase
Solution Approach 1:
The patent employs preliminary configuration of multiple bandwidth parts (BWPs) during connection setup, where the network pre-configures several BWPs with different bandwidth characteristics before actual data transmission begins. This preliminary action allows the system to quickly switch between pre-configured BWPs based on traffic demands without requiring complex real-time configuration negotiations, thereby reducing signaling overhead while maintaining energy efficiency.
3Adaptability or versatility
If multiple bandwidth parts are configured on component carriers to support diverse service requirements, then service versatility is improved, but measurement and management complexity increase
Solution Approach 1:
The patent applies local quality by configuring different bandwidth parts (BWPs) with specific characteristics tailored to different service requirements on the same component carrier. Each BWP can be optimized for specific services (e.g., enhanced MBM, ultra-reliable low-latency communications) while maintaining a unified measurement framework. This approach enables service versatility without proportionally increasing measurement complexity, as the measurement procedures remain consistent across different BWPs.
Data Source
AI summary
A wireless device receives one or more radio resource control (RRC) messages indicating a first downlink bandwidth part (BWP) of downlink BWPs of a cell, as a first active downlink BWP of the cell. The wireless device activates, based on the one or more RRC messages, the first downlink BWP of the downlink BWPs of the cell. The wireless device receives an RRC reconfiguration of the first active downlink BWP of the cell. The RRC reconfiguration indicates that a second downlink BWP of the downlink BWPs of the cell is the first active downlink BWP of the cell. In response to the RRC reconfiguration of the first active BWP of the cell, the wireless device switches to the second downlink BWP of the cell, as an active downlink BWP of the cell.