DRX Timer Configuration for BWP Switching in 5G UE
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Solution Overview
Problem
Current 5G communication systems face challenges in efficiently providing services due to limitations in discontinuous reception (DRX) operations, particularly in configuring and managing timers for DRX operations in user equipment (UE) and base stations, which affect data transmission and reception efficiency.
Innovation Solution
The method involves configuring a timer for DRX operations based on bandwidth part (BWP) configuration information and DRX configuration information, with specific timers such as on-duration, short DRX cycle, and retransmission timers, and updating these timers based on BWP switching without changing their duration before they expire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If timer duration is updated during BWP switching, then adaptability to different bandwidth parts is improved, but timer consistency and reliability are degraded
Solution Approach 1:
The patent applies preliminary action by configuring the timer duration in advance based on the initial BWP configuration before BWP switching occurs. The timer is set to a fixed duration that remains valid throughout the DRX operation, preventing the need to update it during BWP switches. This ensures timer consistency while still allowing BWP switching to occur, as the timer was pre-configured to handle the DRX cycle appropriately.
2Speed
If DRX operations are implemented with frequent timer updates, then responsiveness to BWP changes is improved, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the timer duration based on initial BWP information before DRX operations begin. This eliminates the need for frequent timer updates during BWP switching, reducing the processing overhead and power consumption associated with continuous timer management while maintaining responsiveness through the pre-configured timer settings.
Solution Approach 2:
The patent applies self-service by designing the timer to operate autonomously with a fixed duration once configured. The timer automatically manages the DRX cycle without requiring external updates or interventions during BWP switching, reducing the need for active management and associated power consumption while maintaining proper DRX functionality.
3Device complexity
If timer duration is fixed before expiration, then timer management complexity is reduced, but flexibility in adapting to BWP changes is limited
Solution Approach 1:
The patent applies preliminary action by configuring the timer duration in advance based on initial BWP configuration. This fixed pre-configured timer simplifies timer management by eliminating the need for complex update logic during operation, while still providing adequate flexibility through the initial configuration phase where BWP characteristics are known and the timer can be appropriately sized.
Data Source
AI summary
A method of performing a discontinuous reception (DRX) operation by a user equipment (UE) is provided. The method includes receiving bandwidth part (BWP) configuration information and DRX configuration information, configuring a duration of a timer for the DRX operation, based on the BWP configuration information and the DRX configuration information, and controlling the timer to perform the DRX operation, based on the configured duration, wherein the timer for the DRX operation is controlled before the timer is stopped or expires.