Dynamic Timing Advance Group Handling in Carrier Aggregation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current communication devices face challenges in handling timing differences between Timing Advance Groups in Carrier Aggregation, particularly when configured below their maximum capabilities, leading to limitations in tolerable time differences between component carriers, which can result in reduced performance and increased power consumption.
Innovation Solution
The device dynamically reconfigures its baseband processing to accommodate larger time differences between Timing Advance Groups and component carriers by evaluating its capabilities based on the number of carriers and bandwidth, allowing it to support additional time differences beyond minimum requirements, and communicates with the network to deactivate or reconfigure secondary cells when unsuitable for operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device operates with minimum timing difference requirements, then reliability is maintained, but adaptability is reduced and power consumption increases
Solution Approach 1:
The patent implements dynamic capability evaluation where the UE determines its timing difference handling capability based on current configuration parameters including number of TAGs, number of carriers per TAG, and bandwidth. This dynamic adaptation allows the device to transition from static minimum requirements to optimized performance-based timing tolerance, resolving the contradiction between maintaining reliability and achieving adaptability.
2Adaptability or versatility
If the device supports larger time differences between TAGs, then adaptability improves, but device complexity increases
Solution Approach 1:
The patent changes the parameter of timing difference tolerance based on configuration parameters (number of TAGs, carriers, bandwidth). By evaluating these parameters and determining an applicable capability, the device adjusts its timing difference handling dynamically, allowing larger time differences when configuration permits without permanently increasing device complexity.
3Productivity
If the device is configured with more carriers and bandwidth, then productivity increases, but use of energy increases
Solution Approach 1:
The patent implements a feedback mechanism where the UE evaluates its current configuration (number of carriers, bandwidth, TAG structure) and determines its timing difference handling capability accordingly. This feedback loop allows the device to optimize power consumption by adjusting timing synchronization efforts based on actual configuration demands, rather than operating at maximum capability continuously.
Data Source
Figure 1~3
Figure 4~6
Figure 7
AI summary
A method of handling TAGs in a UE capable of CA is disclosed. The method comprises monitoring time differences between signals received from any two serving cells and determining for each time difference whether a configured capability of the UE supports the time difference. A wireless telecommunication device and a computer program are also disclosed.