NEW METHODS FOR RAPID PUBLIC NOTIFICATION VIA SMS IN EMERGENCIES: AN APPLIED STUDY

Abstract

This article presents an applied comparison of three SMS-based methods for rapidly notifying the public during emergencies: conventional sequential SMS distribution, geotargeted parallel SMS distribution, and Cell Broadcast Service (CBS) technology. Queueing theory (the M/M/c model and Erlang C formula) and an additive model of delivery time are employed, and simulation-based calculations are performed for a district with a population of 250,000. The results indicate that geotargeted parallel distribution reduces the time required to notify 90% of the population by approximately 13.3 times compared with the conventional method (from 39.9 to 3.0 minutes), while CBS reduces this time to 30 seconds. The proposed hybrid scheme combines CBS with priority-queued parallel SMS delivery, thereby increasing coverage and reducing network load.