Dynamic Secondary Cell Group Deactivation for 5G Power Management
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Solution Overview
Problem
Current dual connectivity technologies face challenges in dynamically managing power consumption, particularly with 5G NR frequency bands, as higher bandwidths lead to increased power usage and higher frequencies result in higher power consumption, necessitating an efficient method to deactivate the secondary cell group (SCG) to optimize battery life and reduce overheating.
Innovation Solution
A method and apparatus that dynamically deactivate the SCG by checking if the RF bands meet pre-defined criteria, such as frequency or bandwidth thresholds, and creating fake measurement reports to prevent further configuration of secondary NR cells, thereby reducing power consumption and extending battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the SCG uses higher bandwidth or higher frequency bands (FR2) to increase data rate and coverage, then the communication performance is improved, but the power consumption increases
Solution Approach 1:
The patent implements dynamic SCG deactivation by monitoring power consumption thresholds and data rate requirements in real-time. The system dynamically switches between activating and deactivating the SCG based on current operational conditions, allowing the communication system to adapt its power consumption and data rate characteristics according to actual needs rather than maintaining a fixed configuration
Solution Approach 2:
The system changes the operational state parameter of the SCG (activated/deactivated) based on monitored conditions including power consumption thresholds and data rate requirements. By changing this binary parameter, the system can transition between high-power/high-performance and low-power/standard-performance modes to resolve the contradiction between data rate and power consumption
2Productivity
If the SCG is continuously activated to maintain high data rates, then the communication performance is improved, but the device overheating increases
Solution Approach 1:
The system implements periodic monitoring of power consumption and thermal conditions, with the SCG being deactivated during periods when power thresholds are exceeded or overheating is detected. This periodic on-off operation allows the device to cool down and manage thermal characteristics while maintaining communication functionality, preventing continuous high-power operation that causes overheating
3Use of energy by moving object
If the SCG is deactivated to reduce power consumption, then the battery life is extended, but the service interruption may occur
Solution Approach 1:
The system continuously monitors data rate requirements and SCG status, using this feedback to determine when SCG deactivation is appropriate. By implementing feedback loops that track both power consumption and communication performance requirements, the system can make informed decisions about SCG activation/deactivation that balance battery life extension with service continuity, avoiding unnecessary deactivations that would cause service interruptions
Data Source
AI summary
A method for dynamically de-activating a secondary cell group (SCG) of dual connectivity includes: checking if at least one radio frequency (RF) band used by the SCG meets a pre-defined criterion, and in response to the at least one RF band meeting the pre-defined criterion, de-activating the SCG. For example, the at least one RF band is a 5G New Radio (NR) band.