First screen data transmission method and device, equipment, storage medium and transmission system

The invention discloses a first screen data transmission method and device, equipment, a storage medium and a transmission system. The first screen data transmission method comprises the steps of determining the first screen capacity and a receiving window value of a client according to a data transmission request from the client, obtaining a congestion window value of network connection between a server and the client, and transmitting the first screen data to the server when at least one of the receiving window value and the congestion window value is smaller than the first screen capacity. And adjusting the window value of which the size is equal to that of the first screen capacity, and sending target first screen data to the client according to the current latest congestion window value and the receiving window value. According to the first screen data transmission method provided by the embodiment of the invention, the limitation of a client receiving window can be broken through, and more data can be s