| With the rapid development of mobile communication technology and changes of user requirement, the mobile data service is advancing rapidly. The data service depends on the performance of mobile terminals, so the development of terminals should be speed up. To this practical problem, we designed and implemented the mobile terminals, which supply the user requirement and go with the trend of technology.Based on the principle and criterion of data service, a solution of mobile terminal's data service is implemented in this thesis, and the data service is designed and implemented. We improved and optimized the software of mobile terminal to improve its performance. The ultimate product passed the test and went into mass production. The organization of this thesis is as follows. Firstly, the software development platform is systematically analysed from the viewpoint of embedded system. Then, according to the technique characteristic and user requirement, the functions of data service is defined, and the solution of mobile terminal's data service is given. Next, the data service of mobile terminals is designed and implemented. According to the division of system functions, key techniques modules of the whole system are detailed respectively in the next part. At last, the testing results of data service are given.At the end of this paper, a summary of this thesis is given, a brief prospect for the future extended development on basis of existing system has been figured out. |
