йͨѶ¸Ѿ6µʽӪҵʾ߶ȹעûηͨƳȫµֵƷƣܲͨѶߡԤĿ꣬»˵
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Ѷ¸ߡһȫµƽ̨ҲͨרΪCDMA1XûƵҵCD-MA1XֻPDACDMA1Xһƶնˡ
ͨԳѶ¸ǡ25Gʵ3Gƽɣԣ˰Ϊ3GǰҹԤȡ
Ȼ3GҵԤݣ͵ó֮ƥӦãͨųѶ¸߿ṩƶ칫ƶƵƶͨƶƶӰԺҵʵЩҵУ۵ݣһǡֻCûͨCDMA 1X缴ʱտӽĿǡƶ顱ͨĿǰĻIPĹûͬʱ֧1500նٿ顣
Ѷ¸ߵ㣬̳е֮Ҫ۵£
һ֮ã
ָĿǰĵ㣬ҪֻϿӣҲһСʱ;УһСĿӿͷ绰һûˡ
صʹʱƶն˵ƿƶնҪֲ״̬ҵҪĶǵأɫĻʹڴṩӦõͬʱҲŴĵܡزҪ䣬Ҫߵܴ洢ҵʿһֱģеĵػ3GĺȡôѶ¸ߵӦֻжʱ䣿
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ָֻҪСҪôϣһ⣬ֻӣ˷֮⣬Ҳûʲôŵˡ
ʵϣֻӣֻһȡʽѡ뿴칫ڼ䣬˭DZֻӣӼһΣͥͱݵķﶼвʵ磬˭ԸȡСʵֻϰ˲ƣҲһʼЩûͼʣֻƵӵ֣쳤վãǵ۾ܲˡƱܲ˵ʱǻѶ¸ṩĵӽĿ
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ָͨ߿ų153Kٶȣû2000ԪһſʽΪ6Kңٶܿ? ͬ⣬һλƶ豸̵Ĺʦ˵ƶGSMGPRSͨCDMA 1X磬㹻Ĵٶ֧߿ӣһMMSļҪӣ˵ˣǸٶȻøԶ
ġ˭ڸʱ֣
ָͨҵ3GĿĵΪʲô?ǰΣⶼûôĵø3GӦãйӪΪʲôϰЩʱְ?
ĿǰȻϢҵûз3GգͨѶ¸ṩӦȷʵ3Gҵһ⣬š뻥һֱΪΣںϰ࣬ͨġֻڸϵƽ
ǵɲûеһѪֱָҪ
ż ߲ʡ
Ѷ¸ߡҪλǸ߶ûȺԣȻγż
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ΪƹѶ¸ߣͨ״ζֻίдԹ˾רһֻCU928Ϥֻļ۸Լ8000ԪҡͨҲϣCU928ļ۸ֻͨҪߺܶ࣬ǣôߵļ۸ӮöûңؼǣĿǰΪͨṩն˵ֻдһңֻCU928һƷ֪Ʒ٣С۵ĿԾͺС۸Ӹ߲£ʱγɹģ
˵ˣ棬ͨûѾϵƣԤƻϰ꣬ͨҪ֮ƹ˫ģֻڣҪƳƵֻڵûûˡ˵ͨûЩĸ߶ûжԸͨڣüǧǮˮƯ棿
GCͨӦdzԹĿͷˡͨΪCDMAܱޣһʼֱָ߶ˣۼǧۣ֮һµǧԪءͷCDMAʽƵͨòȡߣֻû
ǰֻͨʲô취GCûӵֻ»Ǯȥ˫ģֻͬʱٻǮֻ֪Ѷ¸ߵӦҲӵһרõֻӦá˵䲻˵ĻǾԴʲôëʲôơϧ˰˵ӺûƱӣֻȥƣ
ĺܱˣ
ͨʱѶ˾³СʾĿǰշѱûöȷһ㣬һûоȷʵܱˡ
Ѷ¸ߵʷġܱˡ𣿻ͨıɣѶ¸߸ûΪ50-60K/룬50K/м㣬û200Ԫ£3000MԼֻͨ17Сʱĵӣ£ͨüΪ0.05Ԫ/KÿҪ0.25Ԫ
ۣССֻĻϿ17СʱӣҪ200ԪԶԶߵӽĿշѱԲֻۣͨϿӣÿӶë壬ֱǴ֮ˡҪ֪ǰ£Dz£ͨԤʷֻƷѣշѣշѻͨ˵㣬ȫҪƾӵSPĿۡ
ûҲѾףѶ¸֮Ʒѷʽǡʱ++ۿĿʱշѣӣͨûжܹܵˣڸĹûԣѶ¸ߵķǿɼȻԼռ뷢չĹؼء
ϰ Խ
ȻѶ¸߽أңϰҲԼ䷢չ
һDZ
ҹƵûһͳһļ淶йͨ˶ΣȡƵļĿǰڹڵCDMAӪ̽ͨһңʱڻͨ⣬ֻͨϰȻµӪ̽ҵͨûֻܿѶ¸ߣӪ̵ݷǴɷ羰
һݡ
Ϥͨ12ҵƵЭ飬ΪѶ¸ṩݣа̨4ס9סѶ̨BBCȡѶ¸6µʽͶãʱʷѽɵ̨SPƶͨ˵㡣ԤӵýƾǿҵаҪĽɫҿгڲһýվнĿݷŵվʱͨûٽĿҪٷãͨܵ˼һǿԿ϶ģѶ¸ߡʱ++ۿĿʱշѷʽһûеɵġ
ĵַ:http://www.cnonline.org/2004/article/4060.html