Study on Device Based Geo-Fencing and Triggering Services for Enhancing Alert Area Accuracy in Cell Broadcast Service

This paper is about the enhancement of the alert message service that is the most reliable and swift dissemination method using the cell broadcast function in mobile communication networks. But the cell broadcast area is optimized on the mobility service of UEs. That means the alert messages could be overshot potentially. We studied Geo-fencing to improve alert area accuracy and Geo-Fencing Triggering to enhance reliability of alert messages. We proposed the inter-working algorithm and data definition which is about functions between various devices from public alert systems to mobile network equipment.