:ұµ3Gĵ㽨
2005-01-22 03:1221;ñ
21;ñ
йǷƶͨ(3G)Ӫ㷺ۣҪйҪҪ쿪3Gг?ĿǰʱDzdz?֪йزųڹҰȫõĿǣΪҹTD-SCDMAδ죬ڲҪڿ3Gг
Ϊ3Gгij첻ȡҼ첻죬ȡгǷںͳ죬DZڵܷʵгҶԺձӡȵʵؿ켰ԹʵгоܵĿͽǣ3Gԣϼȳ죬гҲѳ죬Ҫ3GӪʵиӿŵߣץסӿ췢չĵг
Ӧֿ
ӹߵĽǶȿйгɷΪֲͬʵгһǾԡԡȫԵõгǹ90%ϣйг壻һǷǾԵġǿԡԻרľгڹƷʣֻռгļС
ΪһңرĴȷҪչԼļȷҰȫµ;Ӧ뷢չгֿʵвͬԭʮΪгİȫǶгķչΪʧչгҵģܲһӿ3Gгľߣܻᵼ¡֥鶪ϡܡȶϣּ֥顱
ʵϣչгһDZȻìܵġųġӲͬߵѡϿǿԳüⲿԺԣһԡԡӮIJҵߺͼߡӹʾгչԽ졢ԽԽ֣ԽڷչгǰߵļԺߵⲿԽǿԽijɱԽͣվԽСʹDzͬļ
ּ·߱뿼DzͬҵĹͷչΣΪߵķң似·ǡȾãáΪߵķչйң·ǡãá
ǼǷչйң˵Ĺҵܻûϵļ·ߣáзչüʮֳ졢ѾҵҳΪµľʱüӵȨгӦȿš
3Gгȫ
ҵĹҾտ3Gսʱ
йҵķչй൱ɹ¼ߣʮʱ䣬ѸٳΪһûǼ˿гͲù¼ʹйҵͷҵʵʷԵĿԽҪķչ飬ҲڲõĽչΪĵгĸ;
ʮźǣȫƶͨ˳УйȴгΪߣؽǡѵ磬жйزžǷ3GгҡڲԥʵܵijЩ漯ŵĸźͷҵģɥʧһսԵķչѾպŷȷҺ͵Ҳйۺ̨ǵڹӡȡ
200482գȫʹCDMA2000WCDMA 3Gû1.28ڣȫ46ҵ104Ӫ̿չ3Gþ֡պҵչܿ죻ҹ̨ۡ3GҲȡ˽ϴչӡȣ2003ҲѾ7ҲCDMA20003GӪ̣ڷչйʵʩȫƶȡ
ݹʵITUͳݣ2002ӡȵƶ绰ռʽΪ1.22/ˣͬҹƶ绰ռѾﵽ16.09/ˣӡȵ13ȻĿǰӡ73GӪ̣ҹһҲûС
йǷƶͨ(3G)Ӫ㷺ۣҪйҪҪ쿪3Gг?ĿǰʱDzdz?֪йزųڹҰȫõĿǣΪҹTD-SCDMAδ죬ڲҪڿ3Gг
Ϊ3Gгij첻ȡҼ첻죬ȡгǷںͳ죬DZڵܷʵгҶԺձӡȵʵؿ켰ԹʵгоܵĿͽǣ3Gԣϼȳ죬гҲѳ죬Ҫ3GӪʵиӿŵߣץסӿ췢չĵг
Ӧֿ
ӹߵĽǶȿйгɷΪֲͬʵгһǾԡԡȫԵõгǹ90%ϣйг壻һǷǾԵġǿԡԻרľгڹƷʣֻռгļС
ΪһңرĴȷҪչԼļȷҰȫµ;Ӧ뷢չгֿʵвͬԭʮΪгİȫǶгķչΪʧչгҵģܲһӿ3Gгľߣܻᵼ¡֥鶪ϡܡȶϣּ֥顱
ʵϣչгһDZȻìܵġųġӲͬߵѡϿǿԳüⲿԺԣһԡԡӮIJҵߺͼߡӹʾгչԽ졢ԽԽ֣ԽڷչгǰߵļԺߵⲿԽǿԽijɱԽͣվԽСʹDzͬļ
ּ·߱뿼DzͬҵĹͷչΣΪߵķң似·ǡȾãáΪߵķչйң·ǡãá
ǼǷչйң˵Ĺҵܻûϵļ·ߣáзչüʮֳ졢ѾҵҳΪµľʱüӵȨгӦȿš
3Gгȫ
ҵĹҾտ3Gսʱ
йҵķչй൱ɹ¼ߣʮʱ䣬ѸٳΪһûǼ˿гͲù¼ʹйҵͷҵʵʷԵĿԽҪķչ飬ҲڲõĽչΪĵгĸ;
ʮźǣȫƶͨ˳УйȴгΪߣؽǡѵ磬жйزžǷ3GгҡڲԥʵܵijЩ漯ŵĸźͷҵģɥʧһսԵķչѾպŷȷҺ͵Ҳйۺ̨ǵڹӡȡ
200482գȫʹCDMA2000WCDMA 3Gû1.28ڣȫ46ҵ104Ӫ̿չ3Gþ֡պҵչܿ죻ҹ̨ۡ3GҲȡ˽ϴչӡȣ2003ҲѾ7ҲCDMA20003GӪ̣ڷչйʵʩȫƶȡ
ݹʵITUͳݣ2002ӡȵƶ绰ռʽΪ1.22/ˣͬҹƶ绰ռѾﵽ16.09/ˣӡȵ13ȻĿǰӡ73GӪ̣ҹһҲûС
ҹڷչ3GгѾӡȣڵҵƶȴ·ͺӡȡйӡȹɾıȻӡҲɶйµľˣտ3GгѾڱС
3Gչ߽
3GгĻĿڽĵг֮һ
һĿ£3GгĿ꣺Ŀ꣬ʹҵΪҹҪԴ֮һǹ㣬3Gҵչ5ÿɴGDPԼ1800ԪԼռGDP1816ռGDPԼ1.2%ڶĿdzĿ꣬ҪʹITƷΪҹһڲƷĿǾҵȡÿ50100ҵҪΪµĴѧҵṩҵǹ㣬3Gÿ궼Ϊҹ80100ҵҵᣬԼռҵ11018ЧҹϾľҵѹǸЩܹõĸߵȽ߱Խϸʡ൱̶ȵϢͨѶ֪ʶĴѧǴ˾ҵĸĿdzITⲿԺԣչԶ̽ԶҽơԶϢͼ顢ȣĹϢƽ̨
Ϊˣ½飺
һ쿪3GггԷֲʵʩһȷ3GգȷгϢƶշźгڶ˳ӦȫżչͷںϵĴƣȫաǽƽԵĵгĻЧƶȰš
ڶʵйгԭͳԭҹгķչҲ3GгķչĻһַּӪ̵IJ桢̭沢ơ;˳һû壬DZгֵľӪȨʵйгͳõߣҲЧʵߡֱ漰ҰȫϢȫٸԤָԹ涨̱ҵұȹԱ˽гЧʵļδ¼һʮ⡣ӾѧĽǶԵģ磬Ҳޱ߽磬ͬʱⲿԺԣ˭ʹʹ档ڼҾĵгУʵʾǿ˭ʹáЧʵʹµļһ˭췢ġ
ȷгĹϵҵһ͵ľԲҵҵ̺ǵг塣þǴĿǰȸԤġԽλ״̬˳תЩгʧЧгʧĹũձֺ蹵淶гггȷʼͨѶϢܲҪӲҵְְܡӾְְת䡣ίԱFCCģʽʵʱ(һ)Ϣҵҵίġʽӹĵżܲţмְܣйְܿתۺϲţйְܿתҵš
ģÿŵгٽҵѸٳɳ
Ҫرָǣھתڼ䣬һͻǹұ(government capture)ָҵijЩŻ߹߱漯Ӱ죬(ָҵЩ漯ŵķ²)ʹ乫ߡͶʡԴЩ漯ţȫ帣ΪۡйĸĸʵоῴijЩŻųν桢ҰȫΪڣӶʧЧʧЧγijҵʹռ¢гijЩ߾ΪijЩź漯ŵŻߡΪˣʹǵĹ߸ӹ㷺룬ܹѹҷڹҷչ
(ΪйѧԺ廪ѧоΣ廪ѧѧԺ)
ĵַ:http://www.cnonline.org/2005/article/6268.html