The Design And Implementation Of Emergence Communication System Based On Smart Phone And Ad-Hoc Networks

In recent years, several disasters happened around the world and caused great loss and damage. It is really important to think about how to deal with unexpected events such as disasters, big gathering and events. One key fact need to be concerned is the emergence communication during such events. A single communication system cannot meet the requirement of emergence communication, there must be several redundant independent communication system and different ways to make sure the communication service available.With the rapid improvement in cell phone performance and the population of smart phones, smart phone provides a good platform for emergence communication. Regular mobile phone cannot function without base station, but smart phones can utilize the WLAN to construct a network and provide service.The main job of this paper is to find out how to build a local area emergence communication system utilizing on smart phones and wireless ad-hoc network technology. The system accomplished audio and text message communication and served as a effect complement part in the overall emergence communication framework. This system works independent and can still service with any other infrastructure station.This paper first introduced the background of the subject, and followed with the method and features of emergence communication. The emergence communication based on smart phone and ad-hoc technology is promoted then. This paper also make some explanation on some key problems in the system. In the end, a implementation based on Windows Mobile operating system is given and also some key code fragment. This paper also give a complement about this system and advice for improvement.The system in this paper can also be applied in business, for it can provide communication service without base station and thus free in charge.