One to many transmission method and system to transmit real-time video and audio data on wireless local area network

A one-to-many transmission method to transmit real-time video and audio data on wireless local area network (WLAN) satisfying a WLAN transmission standard and formed with a first station, a second station, and at least one third station, said first station being capable of providing simultaneous transmission of at least one video and audio program to said second station, said method comprising:

• (a) using said first station to calculate for the number of said at least one video and audio program that said WLAN can accommodate, according to the bandwidth of said WLAN;
• (b) transmitting a command-packet from said second station to said first station for performing a command action of said command-packet;
• (c) transmitting a set-packet periodically from said first station to said second station;
• (d) checking said set-packet for any errors by said second station, in which said step (b) is performed again if there is some error occurred;
• (e) transmitting periodically at least one data-packet from said first station to said second station, said at least one data-packet containing at least one video and audio program;
• and
• (f) intercepting said set-packet by said third station and, according to the configuration of said set-packet, receiving said at least one data-packet and selectively playing said at least one video and audio program contained in said at least one data-packet by said third station.