【正文】
etwork and so on to speed up bes in one friendly, the wide band IP technology bees the support which and the bining site three nets fuse. Future network to the wide band, the intellectualization, the personalized direction will develop, forms the unified prehensive wide band munications network, and gradually evolution for by nucleus. The heart backbone level and meets the skeleton which eight positions, the service and the network separate. 8 / 8。s wireless frequency band will follow one kind of trend of development again from low to high. in 1981 was born first had the international roaming function analogous system NMT use frequency band is 450MHz,1986 the year NMT vicissitude to the 900MHz frequency band. Our country present simulation TACS system39。 The short note will bee has the picture and the video frequency content electronic postcard。s Internet user quantity will double in the future. In our country, the Internet user39。s Mobitex and GSM system39。s digitization, the grouping, networking39。 從第一代的模擬移動(dòng)電話,到第二代的數(shù)字移動(dòng)網(wǎng)絡(luò),再到將來的第三代移動(dòng)通信系統(tǒng),網(wǎng)絡(luò)使用的無線頻段遵循一種由低到高的發(fā)展趨勢。這些工作為最終移動(dòng)智能網(wǎng)標(biāo)準(zhǔn)的形成積累了經(jīng)驗(yàn)。 第三代移動(dòng)系統(tǒng),即IMT2000,是一種真正的寬帶多媒體系統(tǒng),它能夠提供高質(zhì)量寬帶綜合業(yè)務(wù)并實(shí)現(xiàn)全球無縫覆蓋。業(yè)務(wù)、技術(shù)、市場三者之間是一種互動(dòng)的關(guān)系,伴隨著用戶對數(shù)據(jù)、多媒體業(yè)務(wù)需求的增加,網(wǎng)絡(luò)業(yè)務(wù)向數(shù)據(jù)化、分組化發(fā)展,移動(dòng)網(wǎng)絡(luò)必然走向?qū)拵Щ?。短信將成為帶有照片和視頻內(nèi)容的電子明信片。根據(jù)最近的研究,未來兩年歐洲的因特網(wǎng)用戶數(shù)量將翻一番。發(fā)生在用戶身上的這種生活方式的改變將成為驅(qū)動(dòng)無線數(shù)據(jù)業(yè)務(wù)發(fā)展的重要因素。 無線數(shù)據(jù)業(yè)務(wù)的主要驅(qū)動(dòng)力在于用戶的應(yīng)用。 在過去的十年里,傳統(tǒng)的生活方式已經(jīng)在迅速改變,人們更經(jīng)常性地移動(dòng),職業(yè)和個(gè)人生活之間的分界變得模糊,人們需要不分時(shí)間、地點(diǎn)訪問很重要的信息。 和通信的其他領(lǐng)域一樣,無線數(shù)據(jù)業(yè)務(wù)的一個(gè)最重要的驅(qū)動(dòng)力來自Internet。EDGE會(huì)讓 GSM運(yùn)營商特別受益,他們不但可以贏得第三代移動(dòng)通信的經(jīng)營執(zhí)照,還可以提供有競爭力的寬帶數(shù)據(jù)業(yè)務(wù)。在個(gè)人多媒體世界里,話音郵件和電子郵件被傳送到移動(dòng)多媒體信箱中。 在電信業(yè)歷史上,移動(dòng)通信可能是技術(shù)和市場發(fā)展最快的領(lǐng)域。用戶第一次能夠在他們所在的任何地方無線接收和撥打電話。關(guān)于移動(dòng)智能網(wǎng)的研究,早在1995年就已開始,剛開始并沒有具體的標(biāo)準(zhǔn)協(xié)議出現(xiàn),各廠商各自制定了自己的標(biāo)準(zhǔn),并且據(jù)此進(jìn)行了不少的研究工作,如Alcatel、Nortel、Ericsson等都先后推出了自己的初期產(chǎn)品。Mobile munication technological development tendencyAbstract: This article elaborated the modern mobile munication technology six big most recent development tendency in detail: The network service39。s DataTAC, Ericsson39。s influence Are the same with correspondence other domains, a wireless data traffic most important driving influence from Internet. According to the recent research, two year Europe39。s next stage is and even moves the multimedia shifts personally to the wireless data, this progress already started, and will bee in the future the important point of growth. Will move personally multimedia will supply is unable to imagine, consummation individual service and the wireless information according to the place for the people, will work to the people with life each aspect has the influence. In individual multimedia world, the voice mail and the are transmitted to move in the multimedia mailboxes。s evolution, the network intellectualized degree unceasingly is also promoting. The intelligent network and the intelligent service constitutes in the future the persontoperson munication basic condition. Higher bandFrom the first generation of simulation mobile phone, to the second generation of numeric move network, to future third generation mobile munication system, the network use