针对高速公路移动通信的特性,通过比较分析新型接入标准(802.20)与3G的区别,设计一种基于802.20的移动宽带无线接入网络MBWA,其中的OFDM技术能够充分克服无线移动通信信道的恶劣条件,在此基础上结合蜂窝IP技术来解决移动IP技术在微移动性存在的不足,为高速移动的终端提供一种优质接入服务。 Aiming at the characteristics of expressway mobile communication, this paper designs a kind of MBWA based on 802.20 by comparing and analyzing the difference between the new access standard (802.20) and 3G, in which the OFDM technology can fully overcome the badness of wireless mobile communication channel On this basis, the cellular IP technology is adopted to solve the problem of mobile IP technology in micro mobility and provide a high-quality access service for high-speed mobile terminals.