Mobile Device RAT Switching via Data Rate Monitoring
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Solution Overview
Problem
The power consumption of User Equipment (UE) connected to a 5G network is significantly higher than that connected to a 4G network, especially when signal quality is poor or data transmission rates are low, necessitating a method to effectively switch between different Radio Access Technologies (RATs to reduce power consumption.
Innovation Solution
A method and device for a mobile communications device to determine the data transmission rate and send a measurement report to trigger a handover procedure or release a radio resource control connection, allowing it to switch from a first RAT (e.g., 5G NR) to a second RAT (e.g., 4G LTE) based on thresholds for data transmission rate or signal quality, utilizing a handover or local releasing procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the UE connects to a 5G network, then the data transmission rate is improved, but the power consumption increases significantly
Solution Approach 1:
The patent implements dynamic RAT selection by continuously monitoring data transmission rates and signal quality, and switching between 5G and 4G networks based on real-time conditions. The UE determines whether to remain on 5G or switch to 4G by evaluating whether the data transmission rate falls below a threshold, creating a dynamic adaptation mechanism that optimizes power consumption based on actual network conditions rather than static connection selection
Solution Approach 2:
The patent changes the operational parameters of the UE by switching between different radio access technologies (5G NR and 4G LTE) based on measured data transmission rates and signal quality. When the data transmission rate on 5G drops below a threshold or signal quality deteriorates, the UE transitions to 4G network, effectively changing the network parameter to achieve better power efficiency while maintaining adequate service quality
2Reliability
If the signal quality of the UE connected to the 5G network becomes poor, then the connection reliability deteriorates, but the power consumption increases
Solution Approach 1:
The patent implements a feedback mechanism where the UE continuously measures signal quality and data transmission rates on the current 5G network, compares these measurements against thresholds, and uses this feedback to determine whether to switch to 4G network. This closed-loop control ensures that the UE maintains connection reliability by switching networks when signal quality deteriorates, while simultaneously reducing power consumption by avoiding prolonged operation in poor 5G conditions
3Use of energy by moving object
If the data transmission rate is lower than a threshold, then the power efficiency of the UE connected to the 4G network is better, but the data transmission capability is limited
Solution Approach 1:
The patent creates a dynamic network selection system that adapts to varying data transmission requirements. When data transmission rates on 5G fall below a threshold, the system switches to 4G to improve power efficiency. This dynamic switching allows the UE to optimize for power efficiency during low-data-rate scenarios while maintaining the capability to utilize 5G's higher data transmission capability when conditions warrant, thus resolving the contradiction between power efficiency and data transmission capability
Data Source
AI summary
A method for switching between different RATs is provided. The method is executed by a mobile communications device camping on a first cell using a first Radio Access Technology (RAT). The method includes: determining, by a controller of the mobile communications device, a data transmission rate of the mobile communications device in the first cell; sending, by the controller, a first measurement report according to the determined data transmission rate, wherein the first measurement report is intended to trigger a handover procedure initiated by the first cell or to release a radio resource control (RRC) connection; and switching, by the controller, to camp on a second cell using a second RAT via the handover procedure or a local releasing procedure after the sending of the first measurement report.