NTN Paging Loss Notification for Discontinuous Coverage Handover
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Solution Overview
Problem
In scenarios of discontinuous coverage, such as non-terrestrial networks, terminal devices may fail to receive paging and are unaware of lost paging, leading to missed important information.
Innovation Solution
A method and apparatus for wireless communication that involves a first communications device receiving a notification indicating missed or unreceivable paging, triggering an alarm alert to inform the user, allowing prompt action to regain network coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminal device uses discontinuous coverage scenario (e.g., NTN), then network coverage is reduced, but terminal device may fail to receive paging and be unaware of lost paging
Solution Approach 1:
The network side device sends a notification to the terminal device indicating that paging was not successfully received. This feedback mechanism allows the terminal device to aware of lost paging information, enabling it to take corrective actions such as re-establishing connection or requesting retransmission of the paging message.
Solution Approach 2:
The system performs preliminary actions by having the terminal device monitor for notifications from the network side device before actually receiving the paging message. This allows the terminal to be prepared and aware of potential paging loss conditions in advance, enabling proactive measures to ensure reliable communication.
2Reliability
If terminal device fails to receive paging, then connectivity is lost, but terminal device does not know the paging is lost
Solution Approach 1:
The network side device sends a notification to the terminal device indicating that paging was not successfully received. This feedback mechanism allows the terminal device to aware of lost paging information, enabling it to take corrective actions such as re-establishing connection or requesting retransmission of the paging message.
Solution Approach 2:
The notification mechanism changes the state information from invisible (terminal assumes normal operation) to visible (terminal receives explicit notification of paging loss). This state change enables the terminal to detect and respond to connectivity issues.
3Adaptability or versatility
If terminal device is in discontinuous coverage, then network coverage is reduced, but terminal device cannot know when to restore connectivity
Solution Approach 1:
The network side device sends a notification to the terminal device indicating that paging was not successfully received. This feedback mechanism allows the terminal device to aware of lost paging information, enabling it to take corrective actions such as re-establishing connection or requesting retransmission of the paging message.
Solution Approach 2:
The system performs preliminary actions by having the terminal device monitor for notifications from the network side device before actually receiving the paging message. This allows the terminal to be prepared and aware of potential paging loss conditions in advance, enabling proactive measures to ensure reliable communication.
Data Source
AI summary
The present application provides a method and an apparatus for wireless communication. One example method includes: receiving, by a first communications device in a non-terrestrial network (NTN), a first notification transmitted by a second communications device in the NTN; determining, by the first communications device based on the first notification, first time information related to discontinuous coverage; and before entering a scenario without network coverage, determining, by the first communications device based on first time information, whether to hand over from a serving cell corresponding to a satellite in the NTN to a serving cell of a terrestrial network.