Based on 3gpp standard , the author analyzed and researched the higher protocol layers of radio interface in wcdma , including radio resource control layer ( rrc ) , medium access control layer ( mac ) and radio link control layer ( rlc ) , in which , the rlc is emphasis 依據3gpp協議,作者對wcdma空中接口的高層協議部分進行了分析和研究,包括無線資源控制層( rrc層) 、媒體接入控制層( mac層)和無線鏈路控制層( rlc層) ,其中,對rlc層進行了重點研究。