Base Station e-DRX Synchronization for Inactive UE Paging
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Solution Overview
Problem
Existing radio communication systems face challenges in balancing power consumption and time delay in extended discontinuous reception (e-DRX) cycles, particularly for user equipment in inactive states, where synchronization and configuration of e-DRX functions between base stations are not efficiently managed.
Innovation Solution
A method and apparatus for exchanging messages between base stations to synchronize and configure the e-DRX function for user equipment in inactive states, utilizing inter-base-station interfaces like X2 and Xn for efficient information exchange and synchronization, enabling the e-DRX function by configuring paging time windows and power-saving modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the terminal device monitors the paging channel frequently to receive downlink data, then the time delay is reduced, but the power consumption increases
Solution Approach 1:
The patent implements extended discontinuous reception (e-DRX) cycles with periodic paging time windows (PTW) where the terminal device monitors the paging channel. Instead of continuous monitoring, the device wakes up only during scheduled PTW periods to check for downlink data, thereby reducing power consumption while maintaining acceptable time delay performance through optimized periodic monitoring intervals.
2Use of energy by moving object
If the terminal device stays in dormancy state to save power, then power consumption is reduced, but the ability to receive downlink data is limited
Solution Approach 1:
The network side performs preliminary actions by predicting terminal behavior patterns and pre-configuring e-DRX parameters including PTW timing and duration. This allows the terminal to be reliably accessible during predetermined wake-up windows while maintaining dormancy otherwise, balancing power savings with network accessibility requirements through advance planning of monitoring schedules.
3Use of energy by moving object
If e-DRX function is configured for terminal in inactive state, then power consumption is reduced, but synchronization between base stations becomes complex
Solution Approach 1:
The patent establishes universal e-DRX configuration parameters and PTW timing structures that can be applied across multiple base stations serving different terminals. By standardizing the e-DRX cycle lengths, PTW positions, and monitoring procedures, the system achieves multi-functional compatibility that simplifies inter-base-station synchronization while enabling power savings for all terminals in inactive states within the network.
Data Source
AI summary
Examples of the disclosure provide a method, communication device, and storage medium for processing information. The method for processing information according to the examples of the disclosure is applied to a first base station. The method includes: exchanging, with a second base station, a message for an extended discontinuous reception (e-DRX) function of user equipment (UE) in an inactive state.