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کامپیوتر و شبکه::
انتشار ویدئو
However, because the train- trackside channels for video dissemination are easily accessible to anyone, the video traffic are vulnerable to attacks which may cause deadly tragedies.
The subway video dissemination over WiFi networks must guarantee video authenticity as safety is always the first prior- ity in subway services.
The subway video dissemination over WiFi shall guarantee high QoS (Quality of Service) too.
As an enterprise WiFi network is designed for high signal- noise-ratio and low speed applications, its technology may be applicable to vehicular opportunistic access [21], rather than video dissemination in the harsh subway WiFi network.
In addition, the sensors for train location, speed, and RSSI are assumed to be trusted, and hence their readings can be used as trusted sources (within tolerable error ranges) for optimizing the video dissemination.
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