C-DRX Cycle Scaling for Wireless Device Power Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless devices in C-DRX mode face challenges in optimizing power savings and performance due to uniformly applied C-DRX cycle lengths, which do not account for varying conditions such as battery life, thermal conditions, or quality of service requirements, leading to inadequate battery conservation and potential performance issues.
Innovation Solution
A method for wireless user equipment (UE) to dynamically scale its C-DRX cycle observation based on individual device conditions, using a scaling factor that adjusts the balance between power savings and performance, allowing for longer reduced-power states in less critical applications and maintaining performance in applications requiring low latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a uniform C-DRX cycle length is applied to all devices in the network, then network management is simplified, but individual device power savings and performance optimization are compromised
Solution Approach 1:
The patent implements dynamic C-DRX cycle adjustment where the network can configure different cycle lengths for different devices based on their individual conditions. The device logic determines whether to apply DRX cycle scaling based on device-specific factors such as battery level, thermal conditions, and application requirements, allowing each device to optimize its power consumption independently while maintaining network-wide compatibility through a standardized configuration mechanism.
2Use of energy by moving object
If the C-DRX inactive portion is extended for greater power savings, then battery life improves, but communication latency increases
Solution Approach 1:
The patent introduces a DRX cycle scaling factor that dynamically adjusts the C-DRX cycle length based on device conditions. When battery level is low or thermal conditions are poor, the scaling factor increases the inactive portion to maximize power savings. When applications require low latency, the scaling factor reduces the inactive portion or disables scaling, thereby reducing communication delay. This parameter adjustment allows the system to optimize the power-latency tradeoff in real-time based on current device state and application requirements.
3Use of energy by moving object
If C-DRX observation is reduced for power savings, then battery life extends, but detection precision of network data decreases
Solution Approach 1:
The patent implements dynamic adjustment of C-DRX observation based on device conditions through a scaling factor mechanism. When power conservation is critical (low battery, thermal issues), the scaling factor reduces observation frequency to extend battery life. When applications require high detection precision (real-time communications, interactive applications), the scaling factor increases or maintains observation frequency. The device logic continuously evaluates device state and application requirements to dynamically adjust the scaling factor, optimizing the tradeoff between power conservation and network data detection precision.
Data Source
AI summary
Connected-mode discontinuous reception (C-DRX) cycle scaling by a wireless user equipment (UE) device. The UE may establish a connection with a network via a wireless link, which may operate according to LTE. The UE may communicate with the network via the wireless link using C-DRX over a plurality of C-DRX cycles. Each C-DRX cycle may include a period of time during which the UE operates in a reduced-power state and a scheduled on-duration period of time. An indication may be received to remain in the reduced-power state during the scheduled on-duration period of time of at least one C-DRX cycle. The UE may remain in the reduced-power state during the scheduled on-duration period of time of at least one C-DRX cycle in response to the indication.