本文主要介绍了RNC-MGW侧协议栈中相关协议的基本概念，按照协议栈的基本结构从下至上分别介绍了ATM、SAAL、MTP3B、SCCP、RANAP协议。本文旨在通过学习以上相关协议后，为进一步学习RNC和MGW之间的协议配置提供理论基础。-This paper describes the RNC-MGW side protocol stack related to the basic concepts, in accordance with the basic structure of the stack were introduced from the bottom of the ATM, SAAL, MTP3B, SCCP, RANAP protocol. This paper aims to study more relevant agreements, in order to further study the agreement between the RNC and the MGW to provide a theoretical basis for allocation.