Telecom business noun explanation: Multimedia Information Service (MMS)
Http://www.sina.com.cn July 09, 2004 16:41 Sina Technology
MULTIMEDIA Message Service, Multimedia Information Services, is the highest standard of SMS technology development. Its maximal feature is to support multimedia functions, with high-speed transmission technology Edce (Enhanced Data Rates for GSM Erolution, and GPRS, WAP transmits video clips, pictures, sounds, and text, not only can multimedia transfer between cell phones. And can be transferred between the phone and the computer; the short message capacity is 30,000 bytes, up to 100,000 bytes; mobile phone built-in media editor with MMS function, can write multimedia information, if you install a built-in Or external cameras, users can also make and transmit information or electronic postcards in PowerPoint format. First, the system structure generally, the multimedia information service system includes the following NE: MMS terminal, MMSC, MMS user database, external application server, value-added application server, and non-MMS terminal supporting application system. In addition, in conjunction with the multimedia message platform, it is necessary to support the support of WAP gateway, GSM / GPRS network resources, and the network management system, network management system. MMS Terminal / MMS User Agent: The MMS terminal provides multimedia messaging services over the MMS user agent. The MMS User Agent is an application on the multimedia message terminal, providing user browsing, editing, processing multimedia messages and other functions such as sending, receiving, deleting. MMS User Agent supports MIME, defines different subtypes in MIME, multimedia messages can include text, images, sounds and other data. MMS Relay Server / Multimedia Message Service Center (MMSC): MMSC is the core of the entire multimedia message system, stores and processing multimedia messages, including input and output, address resolution, notification, report, etc. of messages. At the same time, it is responsible for the transfer of multimedia messages between different MMSCs. MMSC also produces a CDR bill for billing. In addition, MMSC requires many connections to other networks: and various value-added services. MMS relay is the system IP interface. The system is connected to a variety of networks, supporting multiple protocols. MMS Redirector: Under the uniform conditions of the MMSC's URL address, the device is responsible for the route query of the user attribute MMSC. It also determines the MMSC of the sender user attribute according to the MSISDN number of the HTTP package, and returns a redirect message to the WAP gateway to forward the HTTP request to the MMSC. MMS User Database: Used to store user service information, service type, personalized service information, etc. The database is part of the mobile data service management platform in the target network, which can be integrated in the MMSC system at the beginning of the network. External Application Server: Multimedia Message Center supports interfaces with multiple external applications, can extend some existing messages systems to multimedia messaging applications. These messaging applications include: E-mail system, Voicemail system, etc. MMS value-added application platform: It is a value-added application platform based on multimedia message platform, and MMSC should be open. Standard API interface supports value-added application development. WAP Gateway: WAP Gateway follows the MMS specification defined by the WAP forum to support multimedia messages. Establish the data access channel of the MMS user agent with the MMS relay server via the WAP gateway to support transmission, reception, notification, etc. of multimedia information. For the connection of the MMS user agent and WAP gateway, WapStack is used to carry on different wireless network platforms. For MMS applications, data is transmitted with a wireless session protocol (WSP). Billing system: MMSC is the billing data acquisition point of the MMS service, and the traffic service is used to use record (CDR), and pass it to the billing system for billing. The billing system function should be implemented in the mobile data service management platform, and can be implemented within BOSS before the mobile data service management platform is completed.
The following is to send information to the mobile phone as an example, analyze the flow of multimedia information services. The part of the wireless access is omitted in the process analysis, only related to the relevant part. 1. When there is a multimedia information to a user, the information is encoded in a WAP WSP protocol. Transfer to the WAP gateway via the wireless network. 2. WAP gateway communicates with MMS-RELAY with the HTTP protocol, transfer the file content to MMS-Relay. 3. MMS-Relay Send the file to the MMS-C server. The content of multimedia information in the server will be converted to MIME format. And stored in the MMS-Message Store. 4. The server performs data analysis to obtain routing information, user terminal information, and the like. Information in the user database is called during the analysis. The system will determine whether the user's terminal can support MMS, and perform different processing according to the load capacity of the user's terminal (such as display resolution, the capacity of the terminal, etc.). For example, when the user terminal does not support the MMS, the system will remove the multimedia information in the multimedia information, and only the text portion of the information is sent to the user in a short message. 5. After confirming the processing method, the system is routed by the MSIS-DN number of the user. MMS-Relay will communicate with external networks via the WAP gateway. This information is always stored in the message memory before not confirming that the called user has received information. Operators can set saved time lengths through software. 6. The system server generates billing information and transmits it to the billing center. Second, the basic function of multimedia information business systems generally have the following functions. 1. Send and reception of multimedia messages. After the mobile phone terminal synthesizes the multimedia message, you can send multimedia messages to all legitimate users in the network. Multimedia messages are stored and processed by MMSC, and is responsible for operations such as multimedia messages between different MMSCs. At the same time, the recipient user can receive multimedia messages from the MMSC. 2. Provide support for non-MMS terminals. This is done by a non-multimedia message support system. A process of receiving multimedia messages in a non-MMS terminal as an example, after receiving the SMS notification, non-MMS end users can access multimedia messages through other means, such as e-mail, wap, www browsing and other means. 3. In the network bearer mode, in the current stage, the carry-on method based on CSD and GPRS will support 3G bearer. 4. Multimedia message business supports the business and points to point to a point. Point-to-point multimedia message service refers to the sender and the receiver is a terminal or application system; point-to-multi-media message service refers to a plurality of terminal addresses. During a multimedia message transmission, you can specify a plurality of receiving terminal addresses. 5. Support for MMS value-added applications. In addition to supporting some existing applications (such as E-mail systems), multimedia messages should also provide open, standard API interface, support value-added application development. Third, business implementation is currently three ways to operate in the business of multimedia messaging: The first is that the sender and the recipient use the mobile phone with MMS functionality to directly transfer. The second is a mobile phone with MMS function, and the recipient is a common phone. At this time, the recipient can apply for an email address with his mobile phone number as a mailbox on the mobile dream website. When the sender sends a MMS, the recipient phone will receive a SMS from the MMS arriving in the mobile dream network. Notice. The recipient can be visible to the MMS on the login. The third is to send MMS directly on the Internet directly to the recipient of the MMS phone directly on the Internet. Fourth, comparison with SMS is the same as the SMS in the message transmission mode: all the storage of forwarding services, that is, the message is not directly serving the user. Instead, send it to the message center, and then forward the message center to the user. However, MMS and SMS also have a big difference: 1.SMS acts as a carrying of various applications, such as: email arrival notification, weather forecast, news, ringtones download, lottery, game, securities, etc. As an application bearer platform, MMS can provide a richer application in addition to the above applications.
2. In terms of bearing mode, SMS is a signaling channel using GSM. Since the transmission capacity of the signaling channel is limited, the SMS is not possible to transmit large data, so SMS-based applications cannot be arbitrarily. Must be the application of small data. The MMS is based on WAP business, walking data channels, and its transmission capability can reach 9.6kbit / s in CSD mode, up to 184kbit / s in GPRS mode, 2Mbit / s can be reached at 3G, and the application is carried out It provides a lot of convenience. Users can send and receive data as they want, and no longer suffer from bandwidth. 3. On content capabilities, SMS can only send and receive text information, each of which can only carry 140 bytes of character information or 70 Chinese characters. Although EMS (Enhanced Message Service, Enhanced Short Message Service) can support graphics, sound and animation information, but the format of these data is too simple, and the user's experience of EMS is far from traditional Internet. And since each SMS message is constant. To transmit more than 140 bytes of information, the EMS message must be split into multiple SMS and then combined on the phone. More importantly, although EMS is also 3GPP standards, not all mainstream mobile phone manufacturers are supported, there must be obstacles in promotion, MMS can support rich data format, including primary graphics, image sound, animation format, user Feel the exactly the traditional Internet, in the future, in the case of bandwidth, it can also support streaming media, greatly improve the richness and expression of the message content. Moreover, MMS's message size breaks through 140 bytes of limitations, from dozens of K bytes to hundreds k bytes, users can almost not affected by the amount of information, and can express their thoughts in a message. . 4. MMS is different from SMS on the network structure. The MMS uses the processing flow of the WAP event, and the receiver actively takes information from the MMSC, the same for the WAP browsing or download mode. V. Development Prospects October 9, 2002. China Mobile announced at the MMS Business Press Conference held in Beijing: MMS business has been officially commercially available on October 1, 2002, and the multimedia era of mobile communications is coming. But what is the most concerned about the user? A few days ago, China Mobile Communications Website made a "choosing MMS business, what factors you most carefully", is the first three factors are mobile phone prices (32%), SMS prices (29%), Easy to operate (14%). The price of the MMS mobile terminal has seriously affects the user's accepted level. If the MMS business is carried out, mobile phone manufacturers cannot produce low-cost, new mobile phones, will seriously hinder the promotion of MMS. It is said that China Mobile is negotiating with terminal vendors. Preparing for the MMS business to bundle the MMS business and mobile phone to promote the price of the mobile phone while launching the MMS business. In addition, the role of price factors will be relatively decreased after people really like and are used to MMS services. At present, the MMS business uses the original SMS fee, priced is 0.90 yuan / article, and the promotion of "2 sends 1" is implemented in the early stages of business. The actual price is 0.60 yuan / article. According to statistics, in 2001, the domestic SMS delivery is 15.6 billion, 80% is a text message sent by mobile phones, and the SMS sent by mobile Dream Network and SP website accounts for 20%. But a little more, we will find that the price of these 20% of SMS traffic is equal to or even more than 80% of the price of pure text message traffic (the price of the picture is 0.5-2 yuan / bar, ringtone 0.5-4 yuan / It is not equal to the 0.1 yuan / bar of the pure text message, 5 ~ 40 times). Now the price of MMS is only 9 times that of SMS, this price is acceptable for most users.
