Dynamic DRX Cycle Adjustment for UE Power Management
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Solution Overview
Problem
Current mobile communication systems have fixed sleep periods for user equipment (UE) in DRX mode, leading to either delayed paging or excessive battery depletion, as they do not dynamically adjust based on UE location or subscribed services.
Innovation Solution
A method and system for dynamically adjusting DRX settings of user equipment (UE) based on parameters such as network operator services, location, supported services, application running, and measurement reports, allowing the UE to indicate changes to the wireless network for optimized power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a fixed sleep period is set in DRX mode, then the UE can reduce power consumption by monitoring channels only in pre-defined time intervals, but the sleep period cannot be adjusted dynamically leading to either delayed paging reception or excessive battery depletion
Solution Approach 1:
The patent implements dynamic DRX cycle adjustment by allowing the UE to transition between multiple DRX cycle configurations (first, second, and third DRX cycles) based on current operational conditions. The network can dynamically switch the UE between different DRX cycles depending on traffic patterns, service requirements, and UE state, making the power consumption profile adaptable rather than fixed.
Solution Approach 2:
The patent changes the DRX cycle parameter dynamically based on UE state and network conditions. Different DRX cycle values are assigned based on whether the UE is in idle mode, connected mode, or performing specific services. This parameter adaptation allows the system to optimize between power saving and responsiveness by adjusting the sleep period duration according to actual needs.
2Duration of action of moving object
If a long sleep period is set, then battery life is extended by reducing wake-up frequency, but paging signal reception is delayed
Solution Approach 1:
The system dynamically adjusts the DRX cycle length based on the UE's operational state. When the UE is in idle mode or low-activity states, longer DRX cycles are applied to extend battery life. When the UE transitions to connected mode or requires timely service, the network switches to shorter DRX cycles, ensuring timely paging reception while still maintaining power efficiency during low-activity periods.
Solution Approach 2:
The patent segments the DRX operation into multiple distinct cycle configurations (first DRX cycle, second DRX cycle, third DRX cycle) that can be applied to different operational scenarios. This segmentation allows the system to select appropriate sleep period lengths for different service requirements, balancing battery life extension with paging delay constraints by having multiple pre-defined DRX cycle options.
3Speed
If a short sleep period is set, then paging signal reception is timely, but battery power is depleted rapidly due to frequent wake-ups
Solution Approach 1:
The system dynamically selects DRX cycle lengths based on actual service requirements and UE state. Short DRX cycles are applied only when necessary for timely paging reception (such as during active communication or high-priority services), while longer DRX cycles are used during idle or low-activity periods to conserve battery power, optimizing the balance between responsiveness and energy consumption.
Solution Approach 2:
The patent implements parameter adaptation by changing the DRX cycle duration based on UE operational context. The network configures different DRX cycle parameters according to service type, UE state, and traffic patterns, allowing the system to use short DRX cycles for speed-critical operations and long DRX cycles for power-critical operations, thereby adapting power consumption to actual performance requirements.
4Device complexity
If DRX settings are fixed based on statistical data, then network configuration is simple, but the system cannot adapt to specific UE location or subscribed services
Solution Approach 1:
The patent segments the DRX configuration into multiple distinct cycle types (first, second, third DRX cycles) that can be selectively applied to different UE states and service scenarios. This segmentation allows the network to maintain relatively simple configuration by using a limited set of predefined DRX cycle options while still achieving adaptability by selecting the appropriate cycle type based on UE location, subscribed services, and current operational state.
Data Source
AI summary
A method and system for dynamically adjusting Discontinuous Reception (DRX) settings of user equipment (UE) is disclosed. The method dynamically adjusts DRX settings based on network operator provided service or location of the UE and converged services supported by the network and so on. The UE indicates the network for adjusting DRX settings when DRX settings needs to be changed based on above parameters. Further, the wireless network provides the DRX settings to UE based on parameters. The method provides subscription information of the UE to access network. The method dynamically adjusts the DRX settings when the UE is in a Femtocell area or the UE associated with features like One Number. The UE can initiate a inter UE session transfer to the other UEs. The UE indicates the network that the sessions have been transferred. The network applies possible signaling optimizations to the UE.