Alert Distribution Device Delay Mechanism for Base Stations
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Solution Overview
Problem
In cellular network systems, when successive alert messages are issued, the base station device overwrites preceding messages, potentially causing earlier messages to fail in reaching terminal devices, especially in scenarios with simultaneous and continuous alert message distribution for emergencies like earthquakes or tsunamis.
Innovation Solution
An alert message distribution device with a distribution delay determination unit that assesses attributes of previous messages to decide whether to delay the distribution of new messages, allowing them to be sent after a designated time, ensuring that earlier messages are not overwritten and reach terminal devices appropriately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the base station device overwrites the previous alert message with the succeeding alert message, then the instantaneity of alert distribution is enhanced, but the reliability of alert delivery is deteriorated because earlier messages may fail to reach terminal devices
Solution Approach 1:
The distribution device performs preliminary action by determining in advance whether to delay distribution of the new alert message based on attributes of the previous alert message. This preliminary determination prevents premature overwrite and ensures that earlier messages have a chance to reach terminal devices before being overwritten, thus improving delivery reliability while maintaining distribution speed.
Solution Approach 2:
The system implements feedback by using the attributes of the previous alert message (such as message type, priority, or distribution status) to determine whether to delay the distribution of the new alert message. This feedback mechanism allows the system to adapt its behavior based on the state of previous messages, preventing unreliable overwrites while maintaining efficient distribution.
2Productivity
If the base station device immediately overwrites the previous alert message, then the productivity of alert distribution is improved, but the loss of information increases because earlier alert messages may be lost
Solution Approach 1:
The distribution device performs preliminary determination before overwriting to check whether the previous alert message has been fully distributed. This preliminary action prevents information loss by ensuring that only messages that are safe to overwrite are replaced, maintaining productivity while preventing premature loss of critical alert information.
Solution Approach 2:
The system changes the parameter of distribution timing by introducing a conditional delay based on the attributes of previous messages. This parameter change allows the system to maintain high productivity for most cases while preventing information loss in critical situations where the previous message needs to be fully delivered first.
Data Source
AI summary
The purpose of the present invention is to provide, in the context of the operation of base station devices defined under 3GPP specifications, an alert distribution device that sends an alert to a device as appropriate on the basis of prescribed conditions, without the alert precedingly requested for distribution being overwritten by the alert succeedingly requested for distribution. To achieve this purpose, an assessment is made when distributing a new alert on whether to delay distributing the new alert on the basis of attributes of alerts distributed in the past, and if the assessment is in favor of delaying distribution, the new alert is distributed after a delay of a prescribed length to the base station device that sends new alerts to terminal devices in place of alerts requested for distribution in the past.