BREW advanced and proficient-3G mobile value-added business operation, customization and Development serialized in 7---WAP, SMS, MMS, and mobile email

WAP Service
Wireless Application Protocol (WAP) is a globally unified open Protocol standard that provides Internet content and advanced value-added services to mobile terminals. The WAP service is a service that allows you to access the wap site directly through a mobile browser (for example, 3G Portal: wap.3g.net.cn ), various application services such as news browsing, stock query, email sending and receiving, online games, and chat are available. Activate the WAP mobile internet service. The wonderful online world will be in your hands anytime, anywhere. News and information, weather forecasts, stocks, entertainment games, flight queries, transportation, food information, dictionaries, foreign currencies, emails, and chats are all available for you.

WAP is based on existing Internet standards, such as TCP/IP, HTTP, XML, SSL, URL, and Scripting, the features of the wireless network are also optimized. The WAP Technology closely links the mobile network with the Internet and the company's LAN to provide a mobile value-added service that is relatively independent of the network type, operator and terminal device. Therefore, the implementation of mobile Internet requires the following three steps: WAP Gateway, WAP Content Server, and WAP mobile terminal (Figure 2-2 WAP System structure ). All this is very similar to the traditional www Service, but WAP supports mobile applications and is more convenient.

 

SMS Service
Short Message Service (SMS) is a wireless application for transmitting short messages on mobile networks. It is a process of storing and forwarding information on mobile networks. Simply put, text messages can be sent through mobile phones and other mobile devices. SMS creates a text segment on your phone and sends it to your friends. It is simple and easy to use. The length of this text message is limited to 140 bytes. SMS is welcomed by the masses with simple and convenient functions, but it is always the first generation of wireless data services, with restrictions on content and application technical standards. SMS adopts the storage and forwarding mechanism. The text message center in the mobile network is used instead of the end user to send data packets. If the user is not in the service area, the text message is stored in the text message center and sent to the user after the user appears, and adopt the Transfer Confirmation mechanism.

Currently, the short message service is generally divided into point-to-point short message service, group short message service, and value-added short message service. Point-to-Point SMS refers to the business form of sending and receiving text information between mobile terminals, which is the most common; A group text message means that an enterprise uses a computer to send notifications, information, and announcements to its employees or customers who own mobile phones at the same time. Employees or customers can use their mobile phones to obtain information from the database of an enterprise or an agency; value-added Service SMS refers to the customized or on-demand information or services that SP/CP sends to its customers. SMS-based value-added services are generally divided into three layers, as shown in 2-3.

 

Multimedia SMS MMS
MMS (Multimedia Messaging Service) is a Multimedia short message Service, according to 3GPP standards (3GPP TS 23.140) and WAP Forum standards (WAP-206 and WAP-209) the latest business related to standard development of multimedia information. The multimedia text message service is supported by the GPRS network or the CDMA 2000 1X network to implement real-time transmission of multimedia information from the end-to-end mobile phone terminal to the Internet or from the Internet to the mobile phone terminal.

Technically, MMS is definitely not as simple as SMS. Some people in the industry regard it as a substitute for email, and some regard it as an electronic postcard, of course, it is more like multi-media SMS. Through MMS, mobile phones can send and receive multimedia text messages, including text, sound, images, videos, etc, MMS supports multimedia services such as mobile cards, mobile phone pictures, mobile screen saver, mobile phone maps, business cards, cartoons, and interactive videos. MMS can automatically and quickly transmit user-created content. It mainly uses the recipient's phone number for addressing and positioning, so that MMS communication can be performed between terminals. MMS also supports Email addressing, so information can be transmitted between the terminal and Email. The MMS standard does not specify the maximum capacity of a single MMS information, which is mainly used to ensure future interoperability and avoid the dilemma of SMS. Therefore, the MMS information size has nothing to do with the standard, but is only an operational problem. In addition, it also depends on the carrier's decision, such as whether they want to standardize the information size to facilitate billing.

 

Mobile email
As email is the most basic and important service on the Internet, more than 30% of Internet businesses are emails. Mobile Email receiving methods include pull, online browsing, and push.

1. In pull mode, you must manually connect to the mail server and download your own mail;

2. In the online browsing mode, the user must log on to the mail server through the monthly P web page;

3. pushMail means that you only need to set the receiving rules (such as the sender and topic) on the mail server in advance. When the content of the new mail meets the previously set conditions, the email server directly sends a copy of the email to the user's device (such as a mobile phone), instead of actively or periodically initiating a check for the new email by the user (client. Currently, the Push model has been accepted by many enterprise users around the world and has become an important service for mobile operators to attract high-end users.

There are also many mobile email Implementation Solutions. Multimedia e businesses use mobile internet and mature email technologies to provide user registration and Authentication through multimedia email servers, the storage and notification of mails can provide a variety of multimedia information for mobile phone users through the value-added system of external multimedia mails. The multimedia e Business allows mobile users to edit multimedia information on their mobile phones and send it to other mobile users. The recipient can display multimedia information on their mobile phones. The multimedia e-commerce service also allows the mobile phone's email service to seamlessly connect with e-mails on the Internet, so that e-mails can be freely transmitted between mobile phone terminals and the Internet. For example, the "Sha-Mail" business in Japan is implemented by using the multimedia E business from a mobile phone to a mobile phone. You can use a mobile phone installed with a camera to instantly transmit photographic images and other multimedia information, this service has greatly promoted the growth of mobile multimedia services in Japan. The multimedia e Business between mobile phones and the public internet is the communication between mobile phones and Internet commercial users, which enables mobile office for business users. Users or service providers can send multimedia e messages to mobile phones through the public internet, for example, users can download a multimedia screen protection for their mobile phones on the public internet or users on the public internet can send multimedia e messages to mobile phone users; you can also use a mobile phone to send multimedia e messages to the public Internet. For example, a mobile phone user can send multimedia e messages to an email address on the public internet.