WCDMA RAN 缩略语(Abbreviations)总表英文缩写(Abbreviations)英文原语(English)中文含义(Chinese)2G2nd Generation Mobile Communications System第二代移动通信系统3G,3GMS3rd Generation Mobile Communications System第三代移动通信系统3GPP3rd Generation Partnership Project第三代移动通信标准化伙伴项目第三代合作组织AA/DAnalog/Digital模数转换AAAAuthentication, Authorization, Accounting鉴权、授权、计费AALATM Adaptation LayerATM适配层AAL1ATM Adaptation Layer type 1ATM适配层类型1AAL2ATM Adaptation Layer type 2ATM适配层类型2AAL5