Loading...
ڵλãֻг
Ų3GŶб 159ŶΪGSM
2005-08-26 13:32йֻԭߣ
գý屬ƶ159Ŷκ󣬾ƶһŶGSM磬ҵƶӵ134-1396ں룬134ŶҲòãûбҪʹ159ŶΡ159ŶδϺ׺139Ŷβ룬Իƶ⽫˺Ŷδ3Gʹá

ŲԱʾ˴׼159ŶΣֻĿǰûϿ죬кԴ޷˲µĺŶΣʵ2003ѿʼ룬˴η159Ŷ3Gûκιϵ

ͬʱϢʿƣ159ŶGSMδ3GŶλݵʱȥȷһ2G3G

1592G3Gƽȹɣ

йƶбʾ˾ƻ͸еʩͬʱǿҵķչʵ3Gƽȹɡ

йƶܾ3Gշź߱ǰ£ҪĵHSDPAսԲȴغƳȻڲչ2G3Gйܳһʱ䡣бij¯Ҳӡ֤һս󡱵ļƻбʾ˾ƻʹ3GPPR4汾WCDMA

йƶʽʼΪWCDMAҡź˴λ3GŶΣǷԴйƶδ3Gɵ·ʻ

йҵִı仯֮ǰйƶGSMɵWCDMAҵʿϵĽйƶѡHSDPA3GǴսԽǶȿ⣬һüռƸߵ㣻ǺͶֲĵҪǰռݵгŲоԺϯר½ʾ

ŲŹйʿԼ߱ʾڹڷ3G֮󣬱ؽҵֵı仯ڣйƶ˵粿ƵԴԼԴǰλƶĿǰ3Gսϵĵ֮

ĵַ:http://www.cnonline.org/2005/article/7305.html
Ϊйֻ߶Ҳдӭ΢罻硣
Ƽ
Loading...