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所有无线手机都包含了两个基本功能模块:通讯模块和应用处理模块。通讯模块与网络相连,通过空中接口发送接收数据。应用处理模块为用户提供多媒体设备所需要的功能。这些功能包括话音、音频回放、图像复制和视频流、传真的发送和接收、电子邮件、因特网连接、游戏、个人日程管理功能等等。应用处理模块还负责用户界面功能,如语音识别(语音指令)、键盘和手写识别。除用户界面功能外,所有这些应用程序的性能都取决于空中接口的带宽。 在有限带宽内包含语音、音频、图象和视频等
All wireless handsets include two basic function modules: communication module and application processing module. The communication module is connected to the network and sends and receives data over the air interface. The application processing module provides the user with the functions required by the multimedia device. These features include voice, audio playback, image reproduction and streaming, facsimile transmission and reception, email, Internet connectivity, gaming, personal calendar management and more. The application processing module is also responsible for user interface functions such as voice recognition (voice commands), keyboard and handwriting recognition. In addition to the user interface capabilities, the performance of all these applications depends on the bandwidth of the air interface. Including voice, audio, video and video within limited bandwidth