Visible light communication system and transmission control method therein

In the system, a transmission control server receives video data and encodes the received video data into a layer signal of a scalable video coding (SVC) bitstream and controls a signal for each layer to be allocated and transmitted to a plurality of illuminations of a channel corresponding to a priority for each channel decided according to a channel state depending on an interference amount fed back from a reception apparatus according to an importance of the signal for each layer of the SVC bitstream. A reception apparatus receives video signals of SVC bitstreams transmitted from the plurality of illuminations and SVC-decoding the received video signals to generate video data and calculates the interference amount for each channel based on reception power measured for each channel of the received video signal and feeds back the calculated interference amount to the transmission control server. Herein, the reception apparatus determines that a channel having a relatively large interference amount is better in a channel state and feeds back the determination to the transmission control server, the transmission control server allocates a layer signal having a high importance to an illumination of a channel having a high priority, the reception apparatus sets a channel in which the interference amount is less than a predetermined threshold value as a channel in which transmission is impossible and feeds back the channel to the transmission control server, and the transmission control server excludes a corresponding channel at the time of deciding the priority so as not to allocate the layer signal to the illumination corresponding to the channel in which the transmission is impossible.