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MMS Transport Technology for None-Mobile-Phone Terminal

Author: WeiKai
Tutor: HuangZhanHua
School: Tianjin University
Course: Optical Engineering
Keywords: Multimedia Messaging General Packet Radio Service WAP gateway The protocol data unit AT command
CLC: TN929.5
Type: Master's thesis
Year: 2007
Downloads: 76
Quote: 1
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Abstract


In recent years , the development of mobile communication technology , gives us unprecedented feast . Experience in advance as the 3G era , the multimedia message service (MMS) greatly enrich the application of wireless data communications . This article describes an existing GPRS - based wireless network platform , multimedia messaging as an information carrier , with the computers and other non- phone mobile terminal equipment , long-distance data transmission method , and carried out a detailed analysis of the relevant technical standards and transaction processes and instructions. The main work of this paper include the following aspects : 1 , the computer as a source -side data acquisition and processing equipment in the VC environment through C language programming by AT command control GPRS modem dial-up networking connection ; then in the realization of the UDP Socket communication mechanism based on the use of the WSP session management tools to establish a session with China Mobile 's WAP gateway . 2 , in accordance with the requirements of multimedia messages and SMIL protocol on the sending end of data to sort , package a multimedia message protocol data unit ( the M -Send.req PDU ) , by initiating WSP POST action , the packet delivery to the WAP gateway Complete the information sent . Destination successfully received by the phone support MMS . 3, try to embedded systems programs transplantation . At the source end , according to the PPP negotiation mechanism , establish a data link connection , complete control of the modem dial-up , and successfully obtain a dynamically assigned IP address , which laid the foundation for for embedded multimedia messages sent . While at the destination by the WSP GET operation , where the web page information to obtain the multimedia message , which is received for further processing of the information may be provided. 4 , the processing of the the Chinese information part multimedia format message will be described. Through the establishment of GB2312-80 Unicode encoding mapping table , the Chinese characters in Unicode code obtained in a relatively simple manner , so as to achieve multimedia messaging protocols for Chinese content coding requirements .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
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