Protocol, C/S mode, full duplex communication .. hypermedia terms parsing protocol, C/S mode, full duplex communication, serial transmission, OFDM, STDM, URL, hypertext, and hypermedia. Protocol: the rules and conventions for managing computer communications become the protocol. C/S Mode: Client Server mode. Full Duplex Communication: both parties can send and receive information simultaneously. Serial Transmission: Binary bit is transmitted one by one. OFDM: FSD (Frequency Division Multiplexing). After a user allocates a certain Frequency band, the user occupies this Frequency band throughout the communication process. All users with frequent multiplexing occupy different bandwidth resources at the same time. STDM: statistical time division multiplexing is an improved time division multiplexing method, which can significantly improve the channel utilization. URL: Uniform Resource Identifier. Is used to indicate the location of resources obtained from the Internet and the method for accessing these resources. Hyper Text: hypertext. hyper text contains links to other documents. Hypermedia: In addition to text information, hypermedia also contains other representation information, such as, images, sounds, animations, and even active video images.