Based on the introduction of wireless metropolitan area networks IEEE802.16 e, mobile broadband wireless access IEEE802.20 and wireless regional area networks IEEE802.22, the characteristics and the development trend of MBWA are discussed in this paper.是什么意思_Based on the introduction of wireless metropolitan area networks IEEE802.16 e, mobile broadband wireless access IEEE802.20 and wireless regional area networks IEEE802.22, the characteristics and the development trend of MBWA are discussed in this paper.在线翻译_英语_读音_用法_例句