Wireless Device DRX Cycle Adaptation for Open Spectrum Monitoring
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Solution Overview
Problem
Wireless communication devices face challenges in balancing power consumption and timely data transmission on open spectra due to competing timing constraints from limited channel access, cellular network timing, and discontinuous reception cycles, making it difficult to implement efficient data transmission strategies.
Innovation Solution
A method that involves receiving a configuration from a network to monitor the open spectrum for a channel occupancy time acquisition signal, determining trigger criteria, and dynamically switching between different settings of the discontinuous reception cycle to adjust ON and OFF durations, thereby optimizing power consumption and data transmission timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a device operates according to a fixed DRX cycle to reduce power consumption, then power consumption is reduced, but the device cannot timely access the open spectrum when channel conditions change
Solution Approach 1:
The patent applies dynamics by enabling the DRX cycle parameters (ON duration, OFF duration, periodicity) to be dynamically adjusted based on channel conditions. The network can configure multiple DRX settings and the device switches between them according to LBT success rates and spectrum access opportunities, transforming the fixed DRX cycle into an adaptive mechanism that balances power consumption with timely spectrum access.
Solution Approach 2:
The patent implements parameter changes by modifying DRX cycle characteristics (ON duration length, OFF duration length, periodicity) based on monitored channel conditions. When LBT success rate improves or spectrum access opportunities increase, the device transitions to DRX settings with longer OFF durations for power saving. When access conditions deteriorate, the device switches to settings with shorter OFF durations or extended ON durations to ensure timely data transmission.
2Loss of time
If the device extends ON duration to monitor for COT-AS signals frequently, then timely data transmission is achieved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the ON duration length variable rather than fixed. The device monitors LBT success rates and spectrum access conditions, then dynamically adjusts ON duration through DRX setting switches. When channel conditions are favorable, ON duration is extended to capture COT-AS signals promptly. When conditions are poor or stable, ON duration is reduced to minimize power consumption during monitoring.
Solution Approach 2:
The patent implements feedback by continuously monitoring LBT success rates, COT-AS signal detection outcomes, and spectrum access conditions. This feedback information is used to determine when to switch between different DRX settings, creating a closed-loop system that adapts ON duration based on actual channel conditions, thereby optimizing the balance between timely data transmission and power consumption.
3Productivity
If multiple timing constraints (LBT, RAT frame timing, DRX cycle) are simultaneously applied, then comprehensive resource management is achieved, but transmission timing becomes difficult to coordinate
Solution Approach 1:
The patent applies merging by integrating the coordination of multiple timing constraints (LBT procedure timing, RAT frame timing, DRX cycle timing) into a unified DRX setting configuration. The network provides pre-configured DRX settings that inherently account for all three timing constraints, allowing the device to switch between integrated timing patterns rather than managing separate timing mechanisms, thereby reducing coordination complexity while maintaining comprehensive resource management.
Solution Approach 2:
The patent implements universality by designing the DRX setting mechanism to simultaneously serve multiple functions: power management, timing synchronization, and spectrum access coordination. Each DRX setting configuration encompasses parameters that address all three timing constraints (LBT, RAT frames, DRX cycle), making the DRX mechanism a universal tool that handles multiple timing requirements through a single coordinated framework.
Data Source
AI summary
A network configuration of a wireless communication device monitoring an open spectrum is provided. The wireless communication device monitors the open spectrum for a channel occupancy time acquisition signal, in accordance with the configuration and a discontinuous reception cycle.