Cell Activation Timing Management in Wireless Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multicarrier communication systems face challenges in efficiently managing signal timing and carrier aggregation, particularly in scenarios involving unlicensed spectrum and diverse radio technologies.
Innovation Solution
The implementation of advanced signal timing mechanisms and carrier aggregation techniques, including Listen-before-talk (LBT) procedures, dynamic modulation and coding schemes, and efficient timing advance group configurations, to optimize communication in multicarrier systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation is implemented to increase data throughput, then network capacity and speed are improved, but system complexity and interference management difficulty increase
Solution Approach 1:
The patent segments the carrier aggregation management into distinct functional blocks: a determination block that identifies interference conditions, a selection block that chooses appropriate SCell groups, and a configuration block that applies the selected configuration. This segmentation allows the complex carrier aggregation process to be managed through modular, independent functions that can be processed sequentially, reducing overall system complexity while maintaining high data throughput capabilities
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of interference determination and SCell group selection logic that mediates between multiple carriers. This intermediary layer analyzes interference conditions and selects optimal SCell group configurations before applying them, acting as a buffer that simplifies the management of complex multi-carrier interactions and prevents direct conflicts between aggregated carriers
2Adaptability or versatility
If multiple SCell groups are configured to improve resource allocation flexibility, then network adaptability is enhanced, but timing management complexity and interference increase
Solution Approach 1:
The patent implements feedback mechanisms where the system continuously monitors interference conditions and adjusts SCell group configurations accordingly. The determination block assesses current interference levels, and based on this feedback, the selection block modifies the active SCell group configuration to minimize interference while maintaining resource allocation flexibility. This closed-loop feedback system allows the network to adapt dynamically without manually increasing complexity
Solution Approach 2:
The patent makes the SCell group configuration dynamic rather than static. The system can switch between different SCell group configurations based on real-time conditions, allowing the network to adapt its resource allocation flexibility to match current interference conditions. This dynamic approach enables the system to optimize performance under varying conditions without permanently increasing complexity or interference
3Reliability
If Listen-before-talk procedures are implemented to reduce interference, then network reliability is improved, but access delay and loss of time increase
Solution Approach 1:
The patent applies preliminary action by having the determination block assess interference conditions and select SCell group configurations in advance, before actual data transmission begins. The LBT procedure is performed preliminarily to identify suitable carriers, and the optimal SCell group is selected beforehand. This preliminary preparation reduces the need for repeated access attempts and minimizes access delay while maintaining high network reliability through proactive interference management
Data Source
AI summary
A wireless device may be instructed to activate a cell. The wireless device may activate a cell and start a timer. The wireless device may receive downlink control information (DCI). The DCI may indicate monitoring of a downlink control channel or may indicate a resource grant. The wireless device may monitor the downlink control channel and start another timer. The wireless device may receive the resource grant while one or more timers are running.