Use of WML

08.18 Posted In , , , , , Edit This 0 Comments »
For tools such as wireless, mobile phones, accessing the internet will work very burdening the phone. Therefore, WML markup languages used, and not HTML, because:

1. Low Bandwidth
The size of the web page, html now, about 20KB, with a 56Kbps modem speed, download a page requires about 4detik. Meanwhile, wireless bandwidth is approximately 9.6 Kbps, to download the same page with the wireless tools will need 17 seconds. WML and WMLScript is a binary code that dikodekan to the compact form before they ditransmisikan, this is to reduce the size of the file. Wireless Session Protocol (WSP), which is similar to the HTTP on the Internet with a cable, is also a binary code, with the same goal, namely to save bandwidth. Wireless Transaction Protocol (WTP), which is similar to the TCP on the Internet with a cable, not only are designed to minimize the amount of data each transaction, but also the amount of the transaction itself.


2. Quick response
WAP application environment, using the concept of scripting, which means that the distance between client and server can be avoided. ACK delivery process, also do not need to be done, because the Wireless telephony ApplicationIinteface (WTAI), has provided a repository, namely Persistent storage media used to handle services, which require response event that the user is done.

3. The view that small
Display WML small, because the use and Card Deck, so do not need many pages, such as in html.
4. Input overcome the limited facilities
Elements in the WML, made with the use, soft-key programming, the buttons are on the phone or PDA.

5. To overcome the limited memory and CPU
WAP technology, use of RAM memory may be a little application to the phone, using the cache.

WAP (Wireless Applicaation Protocol)

07.56 Posted In , , , , , Edit This 0 Comments »
WAP (Wireless Applicaation Protocol) is a communications protocol that allows Internet access using a cellular phone, pager and PDA. WAP is designed to work with the diversity of transmitting wireless network, handheld devices and operating systems.
WAP can be said is the wireless version of the WWW, with a capacity of less bandwidth from 15Kbps, lower than the web technology that generally run on 56Kbps.
The process that occurs when we ask the web page to hold the tools we are:
1. Users ask the URL of the WAP browser in the handheld tool.
2. WAP browser request to the WML format and send the request to the WAP gateway.
3. WAP gateway receives the request, and change the WAP request to the http request, then send them to the web server.
4. Http web server to receive requests, make the necessary process, and then send a response to the WAP gateway.
5. WAP gateway and receive http response, mengkodekan http response into the WAP response, and then send to the WAP device that was passing me.
6. WAP browser software to receive feedback WAP gateway and create the display tool in our WAP.
In 1995, Ericsson introduced the yangbertujuan a project to develop common protocols, concepts, namely the value addition of services on the mobile network. This protocol, called Intelegent Terminal Transfer Protocol (ITTP), can handle communication between two nodes that use the service applications.
1996 and 1997, Unwired Planet, Nokia and several other companies launched the concept in adding additional value services on the mobile network. Unwired Planet issued a Handheld Device Markup Language (HDML) and Handheld Device Transport Protocol (HDTP). Almost the same with HTML and HTTP, as a design tool and protokolnya.
March 1997, Nokia officially removing the concept of Smart Messaging services, Internet access is designed for GSM mobile phone. Communication between a mobile user and the server consists of the Internet Information using SMS and a markup language called Tagged Text Markup Language (TTML).
With that concept in various ways, you risk the user is in pieces, according to certain concepts. Therefore, on 26 June 1997, Ericsson, Motorola, Nokia, and Unwired Planet (which will become Openwave Systems Inc..), Take the initiative, and December 1997, terbentuklah the WAP Forum is open to anyone resmi.Keanggotaannya, after in April 1998, WAP Forum merealese WAP 1.0.
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