SCell PUCCH Resource Configuration and Deactivation Timer Control
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Solution Overview
Problem
In wireless communication systems, particularly in LTE, configuring an activated Secondary Cell (SCell) with Physical Uplink Control Channel (PUCCH) resources in a carrier aggregation system is inefficient due to the need for managing SCell deactivation timers, which can lead to unnecessary activation and deactivation of SCells.
Innovation Solution
A method for a User Equipment (UE) to configure PUCCH resources with an SCell by receiving Radio Resource Control (RRC) signaling, disabling the SCell deactivation timer if running, and re-activating the SCell while keeping the timer disabled, allowing continuous SRS transmission, channel status reporting, and PDCCH monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an SCell deactivation timer is used to manage SCell activation, then the system can automatically deactivate inactive cells to save resources, but this causes unnecessary activation and deactivation cycles when PUCCH resources are configured, reducing system efficiency
Solution Approach 1:
The patent extracts the deactivation timer mechanism from the SCell management process when PUCCH resources are configured. Specifically, when the network configures PUCCH resources on an SCell, the UE stops and does not restart the deactivation timer for that SCell, effectively removing the timer's control function in this specific scenario to prevent unnecessary activation-deactivation cycles
Solution Approach 2:
The patent introduces dynamic behavior to the deactivation timer based on PUCCH configuration status. The timer is stopped when PUCCH resources are configured on an SCell and is not restarted subsequently, allowing the system to adaptively change the timer's operation based on the communication needs of the SCell
2Adaptability or versatility
If the SCell deactivation timer is continuously managed, then the system can respond to changing traffic conditions, but this increases the complexity of timer management and configuration operations
Solution Approach 1:
The patent removes the deactivation timer management complexity by extracting the timer stopping function triggered by PUCCH configuration. When PUCCH resources are configured on an SCell, the UE stops the deactivation timer and does not restart it, simplifying the management logic by eliminating the need to continuously start and stop the timer based on traffic conditions
3Reliability
If PUCCH resources are configured on an already activated SCell, then the SCell can maintain continuous operation, but the deactivation timer may incorrectly trigger deactivation
Solution Approach 1:
The patent applies preliminary anti-action by stopping the deactivation timer at the moment PUCCH resources are configured on the SCell. This preemptive action prevents the timer from counting down and triggering unintended deactivation, ensuring continuous operation of the SCell when PUCCH functionality is required
Solution Approach 2:
The patent performs a preliminary action of stopping the deactivation timer before any potential deactivation can occur. When the network configures PUCCH resources, the UE immediately stops the timer and establishes a rule not to restart it, proactively preventing the deactivation issue before it can manifest
Data Source
AI summary
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for configuring an activated SCell with PUCCH resource in a carrier aggregation system, the method comprising: configuring with a Secondary Cell (SCell); receiving a Radio Resource Control (RRC) signaling indicating that Physical Uplink Control Channel (PUCCH) resource is configured for the SCell; configuring the PUCCH resource with the SCell according to the RRC signaling; and disabling a SCell deactivation timer associated with the SCell if the SCell deactivation timer associated with the SCell is running when the RRC signaling is received.