TU has approved three 3G s ystems:WCDMA,CDMA2000 and TD-SCDMA.Dueto the greater popuhrity of GSM and withsome of its special characteristics,WCDMAhas gained worldwide support Smooth transitionfrom 2G/2.5G s a highligh...TU has approved three 3G s ystems:WCDMA,CDMA2000 and TD-SCDMA.Dueto the greater popuhrity of GSM and withsome of its special characteristics,WCDMAhas gained worldwide support Smooth transitionfrom 2G/2.5G s a highlight of CDMA2000,and ihas had a lot ofpracticalapplications in China.As a standard with a pioprietary inte llectualproperty right owned by China,TD-SCDMAisstrong in the air interface.展开更多
With the high-speed development of themobile communication and Internettechnologies,modern communicationpatterns,like mobile voice,IP voice,Instant Messenger,have made a huge impact ontraditional Public Switched Telep...With the high-speed development of themobile communication and Internettechnologies,modern communicationpatterns,like mobile voice,IP voice,Instant Messenger,have made a huge impact ontraditional Public Switched Telephone Network(PSTN)voice services.The traditional businessmodel with voice as dominant services is beingthreatened.展开更多
文摘TU has approved three 3G s ystems:WCDMA,CDMA2000 and TD-SCDMA.Dueto the greater popuhrity of GSM and withsome of its special characteristics,WCDMAhas gained worldwide support Smooth transitionfrom 2G/2.5G s a highlight of CDMA2000,and ihas had a lot ofpracticalapplications in China.As a standard with a pioprietary inte llectualproperty right owned by China,TD-SCDMAisstrong in the air interface.
文摘With the high-speed development of themobile communication and Internettechnologies,modern communicationpatterns,like mobile voice,IP voice,Instant Messenger,have made a huge impact ontraditional Public Switched Telephone Network(PSTN)voice services.The traditional businessmodel with voice as dominant services is beingthreatened.
