The invention discloses a radio and television transmission method and a network
system, and the method comprises the steps: obtaining real-time
channel data and user terminal receiving state data in a radio and television
transmission network, and the real-time
channel data comprises
signal strength, a
signal-to-
noise ratio and an error rate; the invention relates to the technical field of radio and television transmission, a channel
state prediction model is constructed through classification
processing and
feature extraction, and a dynamic
code rate switching strategy is optimized in combination with deep
reinforcement learning, so that a channel attenuation trend can be recognized in advance, low-code-rate fragments are preloaded and cached, jamming caused by sudden
packet loss is avoided, and the transmission efficiency is improved. The user experience in an ultra-high-definition live broadcast scene is remarkably improved, meanwhile, through
cooperative work of the center node, the
edge node, the user terminal and the monitoring platform, full-process automatic management from channel monitoring,
state prediction to dynamic
code rate switching is achieved, and the transmission efficiency of ultra-high-definition live broadcast or ordinary television program transmission is greatly improved. And the user experience and the
service quality can be obviously improved.