Method, device, and computer program for robust data transmission in daisy-chain networks

A method for transmitting media data (e.g. video or pictures) in a communication network 100 comprising a first, a second, and a third processing device (e.g. sensors) connected in cascade (or daisy-chain), the processing devices being configured to acquire media data at different acquisition rates, the method comprising, at the first processing device: at the time of receiving information from the second processing device, the information including media data acquired by the second processing device, the first device determines if it has already locally acquired media data itself waiting to be transmitted: if so, the first processing device transmits data to the third processing device information including the information from the second processing device and the media data locally acquired by the first processing device; if not, i.e. the first device determines that it has not yet locally acquired media data (i.e. has no locally acquired data waiting to be transmitted), it transmits (forwards) to the third processing device the information from the second processing device (and does not wait for, or include, the media data not yet acquired by the first processing device). Each node may be allowed to transmit only in an assigned transmitting period (slot).