ͨܽƻiPhone3GгΪʤ
2009-08-17 15:18йֻԭ
ǰý屨ݺļָװͨ3GרiPhonęָڲʿ¶9·ݾͿʽۡǰý屨йͨ100500iPhone9ʽеϢıϡָϢնֻ3500Ԫҡ
ǽйͨ100ڲɹƻ̸ڼ
iPhoneһdzֻϮƻǿĹҵƷ밮ߵܹͨɹ룬Ŀǰͨ˵Ӧһáֵĵҵ鵱УͨƱԡƶҵ棬CDMAҵ֮ӵ4.5ûƶøڹҵ棬ͨͨӵ2ڶûĵԶΨһܹ˸еοǣͨWCDMAӦΪ㷺Ϊ3Gա
ȻͨWCDMAգζռ˾ԵľơйƶTD-SCDMAҹߵŴƶӵ߶˵ƶûԴЩͨȱٵġйŵҵͻԴ˵ҲǸ߶˿ͻЩҲͨȱٵġңĿǰйŵ3Gҵַdz㣬ڹڵӦ÷Χ˼֮⣬йͨȱƺͿͻԴƶŵĽ
Ҫ3Gʱսʤƶţٵأֻͨһѡնˡ˵3GҵУն֧3GҵҵɹġȣǾ֧ŲTDǹʱƶһҪչWCDMA⳧̶ӣûжCDMA2000ͺյ3Gն豸TDҪһЩWCDMAȫӦ÷Χļն豸Ŀѡࡣ
ȫϲն豸iPhoneĪƶΪiPhoneƻĺתȳOPhoneֻiPhoneһһƣûлˡͨiPhoneĺͨ˵˷dzϣͨϣiPhoneġħƶ߶˿ͻԴǣiPhoneô
òϣiPhoneȷʵˣΪܹ°iPhoneƻ̵ſǮ㹻˵ǣййôȻй߾ԲôΪ˵ȵһµֻУϧͨﵩĵȴйֻڹʱͨĶӵȴҡšһʱֻôļ顣˵һĻ졣
iPhoneй棬ǰϢйiPhoneWIFIѾ˵ˣiPhoneͨ˵Ѿûжս塣ܶϲiPhoneߣdzƻƷƺҵƣiPhoneعܡΪںһܣWIFIܱ˸ɸiPhoneйĴվ飬iPhoneйûWIFIܣ20%IJѱʾܻṺȻɲ²ijվԵ۵óĽйƶĶĻʹƽĶۣûWiFiܣĿǰ3G߶ʷ£ȷʵܶûС
ʵϣȡWiFiܣͨھĽǶȿǣ硢šƶдģWiFi裬йͨڳиǵֻiPhoneûʹԼ3GȥʹýӽѵWiFi
ˣзҲܷͨƶĸ߶ȫͨͻֻ̬ȡ
ڻվԵʣƶźŸ㷺ȶȻ3GʱѾʧȥ139-138֮ĺȻһݵҪȫͨתͨ߶˿ͻһ˵ԺճȽϸߣһֻ룬ҵϵӰ죬Ӱ൱ҪǹȥйͨӪCDMAƳC/G˫ģֻ˶οiPhoneûرɣ߶ûת
Ҳ˵ͨҪƶġרҵ߶ûЩûΪiPhoneWCDMAתһʵITˣ3GiPhoneȤҪעǣЩȺĴޣҲôѡʵйϾȥֻĿǰгֻܶĸ߶ûֻǿֻϵ˹һĿǰֻܶ߶ûûֻշʼҲûWiFi/GPRS/CDMA 1XκһַʽҳûԼװչЩԭҪΪй½תڣƸļڷǼרҵʿĹʿŷвײռǺܴġ
Ŀǰ3Gͺںܶ˵DZȽǡڳʹ3GֻǺʹ2Gֻкأ绰ͷţǶûƵͨǶԷֻ֧֣Ҳǰ衣Ͳãù̶ͨ3Gҵй3G̣ѽչվĽҲҪϵʱ䣬йͨڼ500һܷȥߺǻɡ
ͨӪȻWCDMAȫ㷺磬ۼȽԡԶǾƣǻͨCDMAڼҲйƶ2GȥˣйʵûȻֻ2800ԶйͨGûǾͿ3GйδڵĽйͨCһз˻УԲܶࡣ
ͨ˵ƻ IPHONE()̫ϣʧҲ̫ࡣгϵ߲ܽܣǾǿ̸ͨӦģǾӪӪ̾иơն˺3GֻͨƶŵľԽԽԶ
ĵַ:http://www.cnonline.org/2009/article/11257.html