Wireless application protocol .
Wireless application protocol （WAP） It is one of the core technologies of developing mobile e-commerce . adopt WAP, Mobile phones can be used anytime, anywhere 、 Easy and fast access to the Internet , The real realization of mobile e-commerce is not subject to time and geographical constraints .WAP Is a communication protocol , Its development is based on mobile access Internet The need for .
WAP Provides a set of open 、 Unified technology platform , It's easy for users to access and obtain the content expressed in a unified content format with mobile devices Internet Or intranet information and services . It defines a set of hardware and software interfaces , Can make people like to use PC Mobile phones are used to send and receive e-mail and browse like mobile phones Internet.
meanwhile ,WAP It provides an application development and running environment , It can support the most popular embedded operating system .WAP It can support most of the wireless devices currently used , Including mobile phones 、FLEX beeper 、 Two way radio communication equipment, etc . On the transport network ,WAP It can also support all kinds of mobile networks , Such as GSM、CDMA、PHS etc. , It can also support the third generation mobile communication system in the future .
at present , Many telecom companies have launched a variety of WAP product , Include WAP gateway 、 Application development tools and WAP mobile phone , Provide users with online information 、 Air ticket booking 、 Mobile bank 、 game 、 Shopping and other services .WAP The main limitation is the bandwidth of the wireless communication line that the application product depends on . about GSM, At present, the data transmission rate of short message service is limited to 9.6kb/s.
Move IP By changing at the network layer IP agreement , So as to realize the mobile computer in In－ternet Seamless roaming in . Move IP Technology enables a node to switch from one link to another without changing its IP Address , There's no need to interrupt ongoing communication . Move IP Technology can support the application of mobile e-commerce to a certain extent . But now it's also facing some problems , Like moving IP The triangle path problem in protocol runtime 、 Security and power consumption of mobile host .