Energy-Aware Conditional Handover for Low-Power IoT UEs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Energy harvesting devices, such as RedCap and passive IoT devices, face high energy consumption during conditional handover procedures due to continuous DL reference signal monitoring, especially when energy availability is low.
Innovation Solution
A new conditional handover procedure is introduced that considers the energy status of the UE, including current and future energy states, to determine when to engage in handover preparations and measurements, thereby optimizing energy usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous DL reference signal monitoring is performed during conditional handover procedures, then handover reliability is improved, but energy consumption increases
Solution Approach 1:
The patent applies dynamics by making the reference signal monitoring adaptive rather than continuous. The UE dynamically adjusts its monitoring behavior based on energy status indicators, transitioning between different monitoring modes (continuous, periodic, or on-demand) to balance handover reliability with energy conservation for energy harvesting devices
Solution Approach 2:
The patent changes the parameter of monitoring intensity based on energy status. By introducing energy status indicators and configuring different monitoring behaviors according to available energy levels, the system adjusts the degree of reference signal monitoring to resolve the contradiction between maintaining reliability and reducing energy consumption
2Speed
If handover preparations are performed continuously, then handover execution speed is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic action by scheduling handover preparations and reference signal monitoring at intervals rather than continuously. Energy harvesting UEs can configure periodic monitoring and preparation activities that align with their energy availability, enabling timely handovers while conserving energy through structured intervals of activity
Solution Approach 2:
The patent applies preliminary action by allowing handover preparations to be triggered in advance when energy status indicators show sufficient energy availability. This enables the system to prepare for handovers proactively during high-energy periods, ensuring quick execution when needed while avoiding continuous preparation activities that would drain energy
Data Source
Figure 1~3
Figure 4
Figure 5
AI summary
Disclosed is a method comprising determining, by a terminal device, an energy status of the terminal device; and engaging, by the terminal device, based at least on the energy status of the terminal device, in a handover procedure associated with a network device for the terminal device.