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Unit 4: Introduction to WML

WML Tags Notes

WML is mostly about text. Tags that would slow down the communication with handheld
devices are not a part of the WML standard. The use of tables and images is strongly
restricted.

Notes Since WML is an XML application, all tags are case sensitive (<wml> is not the same
as <WML>), and all tags must be properly closed.

4.2.1 WAP and WEB

Generic Mobile Network

A generic mobile network is shown in the Figure 4.1.
Figure 4.1

Mobile
Devices

Wireless
Network
Hardware
Network
Servers
WAP
Gateway
Service

 It is generic representation of a wireless WAN.
 It is a simple overview of a mobile network design.

 Infrastructure is obviously more complex.
 WAP Gateway Server performs the critical bridge functions of communicating with the
mobiles device and translating sent-received data to and from Web Servers.

System Components

Notes Note the elements of a wireless network structure in Figure 4.2. This figure has
been simplified for clarity.

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