TAG-Specific Deactivation Timer for Wireless Cell Activation Control
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in controlling cell activation, particularly in Carrier Aggregation (CA) scenarios, where secondary serving cells are deactivated unintentionally due to uniform timer settings, leading to potential disruptions in data transmission and reception.
Innovation Solution
Implementing a method where a Timing Advance Group (TAG) specific secondary serving cell deactivation timer value is configured and applied to all cells within that TAG, allowing for independent timer settings based on the TAG's specific conditions and usage patterns, ensuring proper deactivation and activation of secondary serving cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a uniform timer value is used for all secondary serving cells, then the control complexity is reduced, but the reliability of cell activation is worsened due to unintentional deactivation
Solution Approach 1:
The patent divides the uniform timer control into segmented TAG-specific timer values. Each Timing Advance Group (TAG) is assigned its own deactivation timer value, allowing different timer settings for different cell groups. This segmentation resolves the contradiction by maintaining manageable control structure while enabling reliable per-group timing control to prevent unintentional deactivation.
Solution Approach 2:
The patent applies local quality by assigning different timer values to different TAGs based on their specific characteristics and usage patterns. Instead of a uniform timer for all cells, each TAG receives a customized timer value appropriate to its local conditions, improving reliability without requiring complex individual cell control.
2Reliability
If TAG-specific timer values are configured for each Timing Advance Group, then the reliability of cell activation is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple individual cell timer controls into TAG-level unified timer control. By combining cells with similar timing characteristics into TAGs and applying a single timer value to all cells within a TAG, the system achieves reliable per-group control while reducing the overall complexity compared to managing timers for each cell independently.
Solution Approach 2:
The TAG-specific timer value serves multiple cells within the same TAG simultaneously, making the timer control mechanism universal for the entire group. This multi-functionality improves reliability for all cells in a TAG while avoiding the need for separate timer management for each cell, thus managing complexity effectively.
3Loss of energy
If secondary serving cells are deactivated based on uniform timer settings, then the energy saving is improved, but the loss of information increases due to unintended deactivation during random access
Solution Approach 1:
The patent introduces dynamic timer values for each TAG based on their specific operational characteristics and usage patterns. This dynamic configuration allows the system to optimize energy saving for each TAG while preventing unintended deactivation during critical operations like random access, thereby maintaining data transmission continuity.
Solution Approach 2:
The system incorporates feedback mechanisms where the network monitors the operational status of each TAG and adjusts timer values accordingly. This feedback allows the system to maintain energy efficiency while preventing information loss during random access procedures, as the timer can be extended or adjusted when activity is detected.
Data Source
AI summary
The present invention is directed to a method and an apparatus used for in a wireless communication system. Specifically, the present invention is directed to a method of controlling cell activity and an apparatus therefore, in which the method comprises: receiving a signal including an identifier and a timer value, wherein the identifier identifies a corresponding TAG and the timer value is used for cell deactivation of the corresponding TAG; and applying the received timer value to all cells belonging to the corresponding TAG.