Use Cases

The radio application designed in this project is primarily intended for front-line emergency service personnel in government or public safety organizations, such as police officers, firefighters, paramedics, and personnel at disaster response centers. The secondary target users are system administrators and communication monitoring staff. The following sections describe the typical usage scenarios for both types of users.

Use Case 1

Alexa is a 32-year-old firefighter who often takes part in urban fire and disaster rescue missions. She uses a portable radio and helmet communication tools to stay connected with her captain and other team members. When she enters a fire scene, heavy smoke and building structures often make the signal unstable, but she has no time to adjust settings or reconnect manually.

She needs a system that can automatically maintain stable communication and ensure messages are delivered in real time, as even a few seconds of delay could affect her team’s safety. In emergencies, she hopes to send alerts quickly and clearly so that the command center and police units receive the warning at the same time and can respond immediately.

For Alexa, the most important qualities are real-time performance and reliability. No matter how harsh the environment is, communication must remain continuous so she can focus completely on saving lives.

Use Case 2

Kevin is a 47-year-old senior police officer who has experienced the transition from traditional analog radios to modern digital communication systems. As a field commander, he is responsible for coordinating communication among multiple patrol units, managing talk groups during large-scale incidents, assigning channels, and executing priority channel switches in emergencies. 

Although Kevin is experienced and open to new technology, he still faces challenges when using complex or unfamiliar interfaces. In high-pressure or time-sensitive situations, he requires a system that minimizes manual setup, provides clear feedback, and remains highly reliable with low latency, even when the network is congested.

Therefore, he hopes the system can support intuitive operation, allowing him to learn it quickly and maintain his efficiency. He also expects strong safety measures so that even if a mistake occurs, communication will not be completely interrupted or lead to serious consequences. 

Use Case 3

Ryan is a 40-year-old commander at a regional medical center located in a remote area. Unlike large cities, this region has limited radio coverage, and specialized radio equipment is expensive; not every medical or logistics staff member can be assigned a device. This can lead to delays and difficulties in communication during emergencies.

Although complete communication failures have not yet occurred, Ryan’s experience makes him fully aware of how critical communication is to rescue operations. To prevent equipment shortages from affecting disaster response, he hopes that staff without radios can still join the communication in real time. This would ensure that everyone has sufficient ways to exchange or report information, avoiding situations where critical orders are delayed due to limited radio availability.

Therefore, he hopes the system will move beyond traditional radio-only communication and make use of modern network technologies. This would allow employees without radio devices to join the conversation, enabling fast coordination, maximizing communication efficiency.