Simple reading of WAP protocol technology

As the standard protocol in the communication network-WAP. The popularity of this protocol has been widely used as early as the 2G communication era. Now, let's take a look at this WAP protocol technology. First, we will standardize the basic concepts of this Protocol.

WAP (Wireless Communication Protocol) is used on digital mobile phones, the internet, or other personal digital assistant machines (PDAs) global Open Standards for communications between computer applications and future information appliances. The birth of this standard was the result of the efforts of members of the WAP Forum. The WAP Forum was held in June 1997, composed of Nokia, Ericsson, Motorola, and Unwi redPlanet ｡

With the WAP technology, you can introduce a large amount of Internet information and various services to wireless terminals such as mobile phones and PALM. wherever and whenever you need information, you can open your WAP mobile phone and enjoy endless online information or resources ｡

WAP protocol technologies include the following:

1. WirelessApplicationEnvironment (WAE)

2. WirelessSessionLayer (WSL)

3. WirelessTransactionLayer (WTP)

4. WirelessTransportLayerSecurity (WTLS)

5. WirelessTransportLayer (WDP)

Among them, the WAE layer contains micro-browser, WML, WMLSCRIPT Interpreter and other functions. The WTLS layer provides basic security functions for wireless e-commerce and wireless encrypted data transmission ｡

An important guiding ideology of the WAP Forum is to make WAP as much as possible consistent with existing standards to maximize the investment of manufacturers and application developers ｡

The existing WWW programming model is used to a large extent. application developers can continue to use their familiar programming models and use existing tools (such as Web servers and XML tools ｡

In addition, the WAP programming model is optimized and expanded based on the communication characteristics of the wireless environment ｡

In terms of bandwidth, WAP uses the "lightweight protocol stack" to optimize the current protocol-layer dialog to minimize the bandwidth required for wireless mobile phone access to the Internet, this ensures that the existing wireless networks can comply with WAP specifications. By using the WAP protocol stack, mobile phones can save a lot of wireless bandwidth for wireless networks.

For example, to query a stock index, the use of HTTP1.0 desktop browser is more than doubled than that of a WAP browser. The number of packets used by WAP Technology is less than the standard HTTP/TCP /half of the IP protocol stack ｡

Currently, WAP is not mature enough in many aspects, but it is enough to open up a new communication field, providing enough technical standards for wireless networks, so that the Internet can be truly ubiquitous ｡