DRX Timer Continuity During BWP Switching
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Solution Overview
Problem
In New Radio (NR) systems, when a terminal switches between Band Width Parts (BWPs) configured with different DRX parameters, data transmission delays can occur due to incoordination of DRX parameters, leading to inefficiencies in data transmission timeliness.
Innovation Solution
The method involves determining the DRX parameter for the first BWP, running a DRX timer based on that parameter, and continuing the validation of the DRX timer when switching to the second BWP, ensuring the timer remains active until the transition is complete, thus avoiding delays caused by parameter miscoordination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If each BWP is configured with its respective DRX parameter for independent control, then the adaptability of DRX configuration is improved, but data transmission delay occurs due to incoordination of DRX parameters during BWP switching
Solution Approach 1:
The patent applies preliminary action by determining and configuring the target DRX parameter before the BWP switching is completed. The network device determines the target DRX parameter corresponding to the target BWP in advance, and the terminal device applies this parameter once switching is complete, ensuring continuous and coordinated DRX timing across BWP transitions without delay.
2Reliability
If DRX timer is restarted when switching BWP, then the DRX parameter coordination is improved, but the monitoring duration extension benefit is lost
Solution Approach 1:
The patent applies continuity of useful action by allowing the DRX timer to continue running across BWP switching events. When the terminal switches from a first BWP to a second BWP, the DRX timer is not restarted but continues from its current state, ensuring both parameter coordination and extended monitoring duration are maintained simultaneously.
Data Source
AI summary
A method and a terminal for running a DRX timer are provided. The method includes: determining a first Discontinuous Reception (DRX) parameter corresponding to a first Band Width Part (BWP); running a first DRX timer corresponding to the first BWP according to the first DRX parameter; and in response to determining a switching from the first BWP to a second BWP, continuously validating the first DRX timer in an operation state to the second BWP.