Abstract：A data communication platform was designed and implemented on Android platform for emergency rescue scenario without communication infrastructure. The Ad Hoc, the WiFi hotspot rotations and the WiFi network connection strategies were provided by the communication platform. Two transmission modes of light transmission mode and long data transmission mode were designed based on nonblock Socket communication technique. The two transmission modes can be adopted intelligently according to different requirements of speed, convenience and stability. The experimental results show that the network connection access rates of Ad Hoc and WiFi hotspot rotation are 100％, and the transmission success rate of nonblock Socket communication is 100％ for a small amount of concurrent data transmissions with short communication distance. The transmission success rate is 90％ for a large number of concurrent data transmissions with long communication distance. Compared with traditional UDP transmission mode, the transmission success rate of light transmission mode is improved by 5％. The transmission success rate of long data transmission mode is 100％, which can provide high speed transmission without serious transmission jitter and other unusual circumstances. The proposed data communication platform can provide stable and robust data communication for the scenario emergency rescue.
2016, Vol. 37 
