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WAP GSM is a wireless application protocol for mobile phones that enables data services such as the Internet. It is best suited for short-term transactional applications and uses logical channels available as physical time slots in GSM. WAP browsers require an infrastructure that also supports WAP, and WML is used for specific needs of mobile devices.
Wireless Application Protocol Global System for Mobile Communications (WAP GSM) is a wireless application protocol for mobile phones that enables data services, such as the Internet. WAP is a set of link layer data communication protocols at the application layer within a mobile phone and GSM infrastructure. WAP GSM is very convenient for short-term transactional applications. For example, a mobile WAP user can quickly make a funds transfer transaction using a mobile WAP phone.
The evolution of mobile cellular communications began with partly digital and partly analog services. The first generation (1G) mobile phones supported voice using digital signals and analog channels. Most 1G systems did not have a short message service (SMS). Later, pure digital voice and data became available as second generation (2G) and second generation and a half (2.5G).
2G and 2.5G WAP phones can support WAP browser. WAP browsers were the first browsers available in mobile WAP. These browsers require an infrastructure that also supports WAP, which means that web servers on the Internet intended to be visible on GSM phones require WAP support. Web servers are able to detect a session difference between a standard personal computer or laptop versus a WAP.
GSM is a popular mobile phone standard that allows for eight digital time slots, used in a scheme known as time division multiple access, over the so-called air interface. The air interface consists of the radio frequency carrier connecting the GSM WAP mobile phone to the cell site, which is further connected to the control sites and mobile switching center (MSC).
WAP GSM accesses logical channels available as physical time slots in GSM. When a virtual data channel is made available, the mobile WAP unit and the WAP web server can be connected and the WAP browser can send requests to the WAP server. The result is a mobile WAP unit that can browse specific WAP portions of the World Wide Web on the Internet.
In general, WAP GSM is best suited for phones that may not easily implement the speed and memory requirements of full web browsers on personal computers, laptops, netbooks and tablets. Wireless Markup Language (WML) is also used by WAP web access for specific needs of mobile devices, such as minimal processing overhead, which is a key consideration for an optimal mobile data experience. As the technology for mobile devices improves, the protocols available for these mobile devices are getting closer to their full counterparts.
