Cell Reselection Triggers for Cell Hopping Power Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cell reselection in communication systems with cell hopping scenarios, such as those involving non-terrestrial networks, results in increased power consumption and inefficient UE operations due to frequent cell changes.
Innovation Solution
A cell reselection method involving the transmission of reselection configuration information by network devices, including trigger, target, and time range information to guide UE measurements, reducing unnecessary reselections and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device performs frequent cell reselection in cell hopping scenarios, then the cell coverage is maintained, but the power consumption increases
Solution Approach 1:
The network device sends reselection configuration information in advance, including trigger information, target information, and time range information. The terminal device uses this pre-configured information to perform measurements only when the trigger condition is met, avoiding continuous measurements and reducing power consumption while maintaining reliable cell coverage.
Solution Approach 2:
The patent implements periodic cell reselection measurements based on time range information provided by the network. Instead of continuous measurement, the terminal device performs measurements at specific periodic intervals defined by the network, reducing overall measurement activity and power consumption while maintaining coverage reliability.
2Measurement precision
If the terminal device continuously measures all cells, then the cell reselection accuracy is improved, but the device complexity increases
Solution Approach 1:
The network device provides target information that identifies specific cells of interest for measurement. The terminal device focuses its measurement resources on these targeted cells rather than all cells, achieving accurate reselection decisions with reduced measurement complexity by applying different measurement strategies to different cells.
Solution Approach 2:
The patent segments the cell measurement process into different phases: cells within the specified time range are measured with high priority for accurate reselection, while other cells are measured with lower priority or not at all. This segmentation maintains reselection accuracy for critical cells while reducing overall device complexity.
3Ease of operation
If the terminal device performs cell reselection without configuration guidance, then the operation flexibility is maintained, but the reselection efficiency decreases
Solution Approach 1:
The network device provides reselection configuration information including trigger, target, and time range information based on network conditions and cell hopping patterns. The terminal device uses this feedback information to guide its measurement and reselection decisions, improving reselection efficiency while maintaining operational flexibility through configurable parameters.
Solution Approach 2:
The patent changes the operational parameters of cell reselection by introducing configurable trigger conditions, target cell identifiers, and time range parameters provided by the network. These parameter changes enable efficient automated reselection while maintaining flexibility, as the terminal can adjust its behavior based on the received configuration parameters.
Data Source
Figure 1
Figure 2A
Figure 2B~3
AI summary
Embodiments of this application provide a cell reselection method and system, and an apparatus. The method includes: receiving reselection configuration information from a network device, where the reselection configuration information includes reselection trigger information, the reselection trigger information is used to trigger measurement for cell reselection, and the reselection trigger information includes reselection time information or reselection trigger indication information; and performing measurement for cell reselection based on the reselection configuration information. In embodiments of this application, the reselection configuration information including the reselection trigger information is introduced. Based on the reselection configuration information, an implementation method for performing cell reselection by a terminal device in a cell hopping scenario is provided, to help avoid a case in which the terminal device cannot perform normal communication.