Robust and High Data Rate Wireless Link for Security Between a Bus and a Control Centre

For Transport operators today, making passengers and crews feel safer on urban mass transportation systems, and curbing damage to rolling-stock, are two of the main priorities. To satisfy these needs, they rely more and more on surveillance systems based on audio and video sensors which are able to detect automatically potentially dangerous situations and to send an alarm signal, with the corresponding audio and video streams, to the security staff at the control centre. When the system is embedded in a public transport vehicle, the transmission system must be a wireless one and must be able to offer high data rate and high quality of service in order not to cause a deterioration to the audio and video stream.