Extended Paging DRX Cycles for MTC Power Savings
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Solution Overview
Problem
Current power saving methods in discontinuous reception (DRX) mode for wireless communication devices are inefficient, particularly for machine-type communication (MTC) devices that require extended power savings, leading to battery drain due to frequent wake-ups for paging occasions.
Innovation Solution
Extended DRX cycle values and scaling factors are introduced to allow devices to set longer paging DRX cycles, enabling longer periods of inactivity and reducing the frequency of wake-ups, which are signaled through new information elements in NAS messages and system information, allowing networks to support extended DRX cycles based on device capabilities and network conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional DRX mode is used for power saving, then devices can reduce power consumption during idle periods, but MTC devices experience battery drain due to frequent wake-ups for paging occasions
Solution Approach 1:
The patent extends the DRX cycle parameters by introducing new information elements in NAS messages and system information that allow devices to configure longer paging DRX cycles. This parameter extension enables MTC devices to wake up less frequently while maintaining network connectivity, directly resolving the contradiction between power saving and battery life.
2Use of energy by moving object
If longer DRX cycles are implemented to reduce wake-up frequency, then power consumption decreases, but network responsiveness and user experience may deteriorate
Solution Approach 1:
The patent implements dynamic DRX cycle configuration where the network can adjust the extended DRX parameters based on device capabilities, network conditions, and service requirements. This dynamic adjustment allows the system to optimize between power consumption and network responsiveness in real-time, preventing deterioration of user experience while maintaining power savings.
Solution Approach 2:
The patent segments the DRX cycle configuration into different levels: standard DRX cycles for conventional devices and extended DRX cycles for MTC devices. This segmentation allows the network to apply appropriate DRX parameters to different device types, ensuring that power-saving extensions do not negatively impact network responsiveness for devices that require faster response times.
Data Source
AI summary
Embodiments of wireless communication devices and method for discontinuous reception (DRX) mode in RRC_IDLE state of wireless communication are generally described herein. Some of these embodiments describe a wireless communication device having processing circuitry arranged to determine to use an extended paging discontinuous reception (DRX) value to increase a paging cycle length. The wireless communication device may transmit a non-access stratum (NAS) message to the network, indicating that the wireless communication device desires to use the extended paging DRX value. The wireless communication device may receive a message from the network that includes an information element (IE) indicating whether the network supports the extended paging DRX value. Other methods and apparatuses are also described.