Wireless Device-Specific DRX Configuration for DTX Energy Saving
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Solution Overview
Problem
Wireless devices experience increased power consumption when operating DRX modes using the same on/off pattern as the base station DTX mode, especially when their transmission and bandwidth requirements differ from the DTX durations.
Innovation Solution
Implementing wireless-device specific DRX operations based on DTX configurations indicated by one or more messages, allowing for independent DRX enablement/disabling to align with individual device needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless devices operate DRX mode using the same on/off pattern as base station DTX mode, then base station and device can be synchronized, but wireless device power consumption increases when transmission and bandwidth requirements differ from DTX durations
Solution Approach 1:
The patent segments the DRX configuration into two independent components: base station DTX configuration and device-specific DRX configuration. This allows the device to have its own independent DRX parameters (drx-OnDuration, drx-SlotOffset, drx-InactivityTimer) that can be separately optimized from the base station's DTX pattern, resolving the contradiction between synchronization and power consumption.
Solution Approach 2:
The patent introduces dynamic adjustment mechanisms where the device can independently modify its DRX parameters based on its specific transmission and bandwidth requirements. The device can adaptively change its DRX on-duration and offset values to match its actual activity patterns rather than being constrained by the fixed base station DTX pattern, thereby reducing power consumption while maintaining necessary synchronization.
2Device complexity
If wireless device uses base station DTX configuration for DRX operation, then configuration simplicity is maintained, but device-specific transmission and bandwidth requirements cannot be met
Solution Approach 1:
The configuration is segmented into base station-level DTX parameters and device-level DRX parameters. The base station configures DTX patterns for cell-level power saving, while simultaneously providing device-specific DRX configuration parameters that allow each device to optimize its reception behavior according to its specific requirements, thus maintaining simplicity at the base station while enabling device-specific adaptability.
Solution Approach 2:
The patent applies local quality by allowing different DRX parameters for different devices within the same cell. Each device can have customized drx-OnDuration, drx-SlotOffset, and drx-InactivityTimer values tailored to its specific transmission and bandwidth needs, rather than using a uniform configuration for all devices, thereby achieving device-specific optimization without increasing base station complexity.
Data Source
AI summary
A base station may enable a power saving operation for a wireless device. The power saving operation may comprise a base station periodically operating a discontinuous transmission (DTX) mode, wherein at least one cell is in a power-on state for a first duration and in a power-off state for a second duration. Instead of following the same on/off durations of the at least one cell, the wireless device may operate a wireless device-specific discontinuous reception (DRX) mode, wherein the DRX on/off states may be implemented based on one or more messages indicating cell DTX configurations.