介绍基带在手机中的作用、基带所要完成的功能、基带语音信号传输流程、基带实现通信协议的工作流程以及基带的技术实现及芯片的构成。-Base-band mobile phone, introduced in the role, the completion of the base-band functions, base-band voice signal transmission process, base-band communication protocol to achieve the wor