Terminal Time Synchronization State Handling for Cell Reselection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G and beyond systems, when the time synchronization state of a radio access network changes, terminals in a non-connected state need to re-access the network to obtain updated synchronization information, but existing methods are inefficient and can lead to unnecessary connection setups.
Innovation Solution
A terminal and network-side device system that enables timely determination of time synchronization state changes, allowing for efficient cell reselection and local storage of synchronization state information, assisted by network-provided time synchronization assistance information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If terminals re-access the network to obtain updated synchronization information when time synchronization state changes, then synchronization accuracy is improved, but network connection overhead and terminal energy consumption increase
Solution Approach 1:
The network side device performs preliminary action by proactively notifying terminals of time synchronization state changes through system information messages before the terminal needs to re-access the network. This allows terminals to obtain updated synchronization information without initiating full network re-access procedures, thereby maintaining synchronization accuracy while reducing terminal energy consumption and network connection overhead.
2Loss of information
If terminals perform full network re-access to obtain time synchronization state information, then synchronization information is updated, but unnecessary connection setups occur
Solution Approach 1:
The invention extracts only the essential time synchronization state information from the full network re-access process. Instead of requiring terminals to perform complete network re-access procedures, the system extracts and delivers only the critical synchronization state notifications through system information messages, thereby updating synchronization information while avoiding unnecessary connection setup complexity.
3Reliability
If terminals continuously monitor time synchronization state changes, then synchronization information is kept updated, but terminal processing resources are consumed
Solution Approach 1:
The system implements a feedback mechanism where the network side device actively notifies terminals of time synchronization state changes through system information messages. This feedback approach ensures synchronization information remains fresh and reliable without requiring terminals to continuously monitor or process extensive data, as the network initiates the information delivery only when state changes occur.
Data Source
AI summary
Provided are a time synchronization state processing method and apparatus, a terminal, and a network-side device. The time synchronization state processing method includes: performing, by a terminal, a first operation in a case that a function of accessing a network based on a change in a time synchronization state is enabled, where the first operation includes at least one of the following: an operation of determining whether a time synchronization state has changed; a local storage operation for time synchronization state indication information; or a cell reselection operation, where the cell reselection operation is used by the terminal to select a cell that supports providing time synchronization state information.