Design And Implementation Of Mmi Software On The Mobile Terminal

With the rapid development of telecommunications, mobile terminals have become the hotspots of communication technology worldwide. The software of moblile terminals includes the underlying system, protocol stack and MMI software. MMI software (Man Machine Interface software), which is responsible for man-machine interaction and application, is one of the major factors influencing the quality of the mobile terminals. This subject is one of the researches of a communication technology corporation, with its target to develop MMI software with higher efficiency.By referring to a great deal of the information available, a research on the software of mobile terminals has been done. In this paper, the GSM mobile terminal system is designed firstly, which includes the hardware and software system. Then the MMI Structure in the GSM mobile terminal system is designed and divided into three layers according to its services:the framework, the graphical user interface and the application layer. Finally, the phonebook software is designed, which includes the applications of find, add, delete, copy and set. During the design and implementation of the phonebook, the ternary search tree (TST) is used to improve the operating efficiency of the phonebook. In the program, the object-oriented thinking, message-driven mechanism and the standard C programming language are used to guarantee the portability of the software.The MMI software designed in this paper goes well in GSM mobile terminals. Taking full account of its independence and portability, the software can be applied to 3G mobile terminals with a little variation.