Multi-channel multicast data sending method and device

The invention discloses a multi-channel multicast data sending method and device, which break through the communication bottleneck of a master station and a terminal node, provide a reliable and efficient multi-channel communication link and reduce the frequency of repeatedly sending data under a multi-channel communication condition. And meanwhile, the multicast data is transmitted to the terminal node through the plurality of communication channels according to the data transmission path set in the multicast tree, so that the influence of signal fluctuation of a certain communication channel on the data can be avoided. The communication capability of each channel is determined according to the multicast data received by the terminal node, and the multicast tree is updated according to the communication capability of each channel, so that effective selection of the communication channels is ensured, the communication channels with stable signals are better selected, and the influence of channel signal transm