Multiple DRX Configurations for Carrier Aggregation Power Savings
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Solution Overview
Problem
Existing wireless communication devices face inefficiencies in power consumption and throughput when performing carrier aggregation due to the use of a single discontinuous reception (DRX) configuration across multiple component carriers, leading to unnecessary power consumption and potential loss of network scheduling flexibility.
Innovation Solution
Implementing multiple discontinuous reception (DRX) configurations for different cells or frequency ranges within a carrier aggregation scenario, allowing the wireless device to handle concurrent connections with multiple nodes of varying generations, such as 5G NR and LTE, thereby optimizing power consumption without compromising throughput or network flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single DRX configuration is used across multiple component carriers in carrier aggregation, then device complexity is reduced, but power consumption increases unnecessarily
Solution Approach 1:
The patent segments the DRX configuration into separate settings for different cell groups (first cell group and second cell group with different DRX parameters). This allows independent optimization of power consumption for each cell group while maintaining manageable complexity through structured configuration. The segmentation principle directly addresses the contradiction by enabling differentiated power management without requiring complete system reconfiguration.
Solution Approach 2:
The patent applies local quality by assigning different DRX configurations to different cell groups based on their specific characteristics and requirements. Each cell group receives tailored DRX parameters optimized for its particular workload and connectivity needs, rather than applying a uniform configuration across all carriers. This localized optimization reduces overall power consumption while maintaining simplicity through modular application.
2Use of energy by moving object
If multiple DRX configurations are implemented for different cells or frequency ranges, then power consumption is optimized, but device complexity increases
Solution Approach 1:
The patent manages complexity through segmentation by organizing multiple DRX configurations into distinct cell groups with clear separation between first and second cell groups. Each group has its own DRX parameters, but the structured segmentation provides a framework that prevents uncontrolled complexity proliferation. The segmentation enables systematic management of multiple configurations without overwhelming the device.
Solution Approach 2:
The patent introduces dynamics by enabling the wireless device to dynamically select between different DRX configurations based on current operational conditions. The device can transition between different cell group configurations as connectivity needs change, allowing flexible adaptation without permanently maintaining all possible configurations simultaneously. This dynamic approach optimizes power consumption while managing complexity through on-demand configuration selection.
3Device complexity
If a single DRX configuration is used across all component carriers, then implementation is simpler, but network scheduling flexibility is compromised
Solution Approach 1:
The patent resolves this contradiction through segmentation by creating separate cell groups that can be independently configured with different DRX parameters. This segmentation provides the network with finer-grained control over scheduling decisions for different cell groups, enabling greater scheduling flexibility while maintaining relative simplicity through the modular group structure. The segmentation creates natural boundaries for differentiated scheduling strategies.
Solution Approach 2:
The patent applies local quality to scheduling flexibility by allowing different DRX configurations for different cell groups, which enables the network to optimize scheduling decisions for each group's specific characteristics. This localized differentiation provides the network with the flexibility to implement group-specific scheduling strategies without requiring complete system complexity, as each local group can be managed independently.
4Use of energy by moving object
If multiple DRX configurations are applied to different cell groups, then power consumption decreases, but loss of throughput may occur
Solution Approach 1:
The patent addresses the throughput concern through dynamics by enabling the wireless device to dynamically adjust its operational state based on connectivity conditions. When connected to multiple nodes with different DRX configurations, the device can dynamically manage transitions and synchronize operations to maintain optimal throughput while benefiting from reduced power consumption. The dynamic adaptation ensures that throughput is preserved even with differentiated DRX settings.
Solution Approach 2:
The patent incorporates feedback mechanisms that allow the wireless device to monitor its connectivity status and adjust DRX configuration application accordingly. Feedback from the network about scheduling decisions and connectivity conditions enables the device to optimize its power savings strategies while maintaining throughput performance. The feedback loop ensures that DRX configurations are adjusted in response to actual operational conditions rather than static assumptions.
Data Source
AI summary
Apparatuses, systems, and methods for supporting multiple discontinuous reception configurations in a carrier aggregation scenario in a wireless communication system. An indication that a wireless device supports multiple discontinuous reception configurations for carrier aggregation operation may be provided by the wireless device to a cellular base station. Configuration information for carrier aggregation operation may be received by the wireless device from the cellular base station. The configuration information may include separate discontinuous reception configurations for each of multiple cell groups.