DRX Active Time Control for In-Device Coexistence Interference
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Solution Overview
Problem
In-device coexistence (IDC) issues arise when communication modules based on new ratio (NR) technology and non-NR technologies, such as Wi-Fi or Bluetooth, operate simultaneously in terminals, leading to mutual interference and potential signal quality degradation.
Innovation Solution
A method and apparatus for controlling the active time of a terminal, which involves receiving an indication signal from an access network device within a discontinuous reception (DRX) active time and determining, based on IDC-related information, whether to extend the DRX active time to mitigate interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal extends the DRX active time to improve signal quality and reduce interference, then the communication reliability improves, but the energy consumption increases
Solution Approach 1:
The patent implements dynamic adjustment of DRX active time based on IDC interference conditions. The terminal determines whether to extend the DRX active time by evaluating IDC-related information, making the DRX parameters adaptive rather than fixed. This allows the system to optimize between signal quality and energy consumption by extending active time only when interference is detected and extension is beneficial.
2Reliability
If the terminal monitors PDCCH continuously to improve communication reliability, then the signal quality improves, but the energy consumption increases
Solution Approach 1:
The patent dynamically adjusts PDCCH monitoring behavior based on IDC conditions. During extended DRX active time, the terminal monitors PDCCH for NR downlink scheduling information. The monitoring is conditional - only activated when the terminal determines that extension is needed based on IDC interference assessment, thereby balancing reliability improvement with energy conservation.
Solution Approach 2:
The patent changes the DRX active time parameter dynamically based on IDC interference conditions. By adjusting the duration and timing of DRX active periods, the system optimizes PDCCH monitoring efficiency, ensuring reliable communication when needed while minimizing energy consumption during normal operation.
3Reliability
If the terminal extends DRX active time to mitigate IDC interference, then the communication quality improves, but the device complexity increases
Solution Approach 1:
The terminal autonomously determines whether to extend DRX active time by evaluating IDC-related information itself, without requiring complex network coordination or additional signaling procedures. The terminal uses its own stored IDC configuration information and current interference status to make the extension decision, simplifying the overall system control while achieving improved communication quality.
Data Source
AI summary
A method for controlling an active time. The method includes: receiving an indication signal sent by an access network device within a DRX active time; and determining, based on IDC related information of the terminal, whether to extend the DRX active time after receiving the indication signal.