移動(dòng)通信技術(shù)發(fā)展趨勢(shì)-文庫吧資料
2025-07-01 03:25本頁面
【正文】 ation evolution39。s local area network and wireless image. in 1999 mercialized GPRS was the first GSM integrated data application, will realize surpasses 100kbit/s the data rate. To short “arises suddenly” the type service is ideal, like the credit card authentication, the longdistance survey and the longdistance business process. EDGE (enhancement data rate GSM improvement pattern) uses has revised the GSM modulation system to realize surpasses 300kbit/s the data rate. EDGE will let the GSM operator profit specially, not only they may win the third generation mobile munication the management license, but may also provide has the petitive power wideband data service. Causes the early time mobile munication to the voice correspondence39。s demand in the movement to grow. In order to satisfy turns on Internet39。s Internet user quantity will double in the future. In our country, the Internet user39。s this kind of life style change the important attribute. （1）Internet39。s ten years, the traditional life style rapidly was already changing, the people regularly migration, between the occupation and individual life39。s main driving influence lies in the user the application. The voice is sole, easy the service which is accepted by the populace, however the wireless data is different, the wireless data initial application key places transportation management such professional market. In the near future the wireless data traffic39。s Mobitex and GSM system39。 Other one kind is the packet switching migration data traffic, like Motorola39。s development is progresses by leaps and bounds, presents the following several general trends: The network service digitization, the grouping, the networking wide band, the networking intellectualization, a higher frequency band, the more effective use frequency, each kind of network tends the fusion. The understanding, grasps these tendencies has the vital practical significance to the mobile munication operator and the equipment manufacturer. 2Network service digitization, grouping The wireless data vitality infinite current migration data munication development is rapid, was considered that is a mobile munication development main direction. In recent years appeared the migration data munication mainly had two kinds, one kind was the circuit switching migration data traffic, like in TACS, AMPS and GSM load bearing data traffic as well as GSM system39。s intellectualization, a higher frequency band, the more effective use frequency, the network tends the fusion, the trend unification. The understanding, grasps these tendencies has the vital practical significance to the mobile munication operator and the equipment manufacturer. Keywords ： Mobile munication Internet Wireless data IMT2000 Intelligent network Network fusion Mobile munication39。s digitization, the grouping, networking39。心骨干層和接八層組成、業(yè)務(wù)與網(wǎng)絡(luò)分離的構(gòu)架。 技術(shù)的發(fā)展、市場(chǎng)需求的變化、市場(chǎng)競(jìng)爭(zhēng)的加劇以及市場(chǎng)管制政策的放松將使計(jì)算機(jī)網(wǎng)、電信網(wǎng)、電視網(wǎng)等加快融合為一體,寬帶IP技術(shù)成為三網(wǎng)融合的支撐和結(jié)合點(diǎn)。六、網(wǎng)絡(luò)趨于融合,走向統(tǒng)一為了從根本上提高GSM系統(tǒng)的容量,1997年
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