Ӫ3GȫƶLTEݽ
2008-11-26 20:34йֻԭ
ǰھŽйƶͨŹ̳ϣйšйƶйͨԼ3GչԡӪ̾Լȫ3Gշ֮Ӵ3Gҵķչ
йƶܲɳԾҵݽĿǡƶTDݽķչҵйŸܲȪʾϼCӪһйŽCDMA-EV DO3G磻йܹͨʦŷͨδWCDMAIJҵ
ĿǰйƶѾ10нTDģ硣йƶܲɳԾұʾTD-SCDMA罨ǷdzѸٵģֹĿǰΪֹվﵽ1.6һʱ2GʮɵĽӦ˵dzѸ٣ͬʱTD-SCDMAҵڷˣֶԹijŵϣҲȡõҵרſҵʮɫ
йŸܲȪйCDMA缼·ߡ˵չCDMAͬʱҲڻ3GĹ滮뽨裬ݲҵͼ״Ӧ˵йźϼCӪһCDMA-EV DO3G磬زƵ1.25ףпʵ3.1ķֵʵ1.8ķֵĿǰ3GCϵͳȽϺõʽѡͬʱйŽͨ3GʵʩҵӦýרŵƺŻЧֹ֧㲥VOIPӵ绰Ϸʵʱýҵйżƻδ3Ͷ800ԪCDMA磬ʱǡC3Gʱ䣬δ3G缼ĽɣἫйƶҵӪҲΪҵƳṩһܺõҵƽ̨
йܹͨʦŷƣйͨ3Gշ֮Ӵ3Gҵķչ3Gг˳ʵ3GƷƶΪģ3Gƶȵơ
3GLTE4GݽйܹͨʦŷʾδƶͨżݽУйͨȫȫչƣδļݽWCDMALTEԺԼ4Gչ棬йİţƽ4GıͼݽĿǰ˵ؿHSDPAHSUPAHSPA+LTEⷽݽ·߷dzˣйͨҪͲ𣬰4Gչδվݽ
йŸܲȪʾۺойҲLTEΪƶݽĿͷҪԭǣĿǰWCDMATD-SCDMAȷLTEݽTD-SCDMAԭƻлƶݽ滮ùѾֹͣˣңʵϹһЩзҲֹͣоUMBҲѾͣˡϼҪCƶӪ̣DzLTEݽˣйſѡLTEܻȽϳļḻIJҵڹΣḻնΪû߸õķ
йƶܲɳԾȷʾTDLTEݽ˵˵2G3GûпԵı仯Ԥ3GLTEǸԵı仯Ժ̶ྺļţδLTEķչƶʢõܺõķչTD-LTEҪ߹ʻƶʽӪ̵κʱҪǿǶδжϺͶδݽͷչ
ĵַ:http://www.cnonline.org/2008/article/10978.html
йƶܲɳԾҵݽĿǡƶTDݽķչҵйŸܲȪʾϼCӪһйŽCDMA-EV DO3G磻йܹͨʦŷͨδWCDMAIJҵ
ĿǰйƶѾ10нTDģ硣йƶܲɳԾұʾTD-SCDMA罨ǷdzѸٵģֹĿǰΪֹվﵽ1.6һʱ2GʮɵĽӦ˵dzѸ٣ͬʱTD-SCDMAҵڷˣֶԹijŵϣҲȡõҵרſҵʮɫ
йŸܲȪйCDMA缼·ߡ˵չCDMAͬʱҲڻ3GĹ滮뽨裬ݲҵͼ״Ӧ˵йźϼCӪһCDMA-EV DO3G磬زƵ1.25ףпʵ3.1ķֵʵ1.8ķֵĿǰ3GCϵͳȽϺõʽѡͬʱйŽͨ3GʵʩҵӦýרŵƺŻЧֹ֧㲥VOIPӵ绰Ϸʵʱýҵйżƻδ3Ͷ800ԪCDMA磬ʱǡC3Gʱ䣬δ3G缼ĽɣἫйƶҵӪҲΪҵƳṩһܺõҵƽ̨
йܹͨʦŷƣйͨ3Gշ֮Ӵ3Gҵķչ3Gг˳ʵ3GƷƶΪģ3Gƶȵơ
3GLTE4GݽйܹͨʦŷʾδƶͨżݽУйͨȫȫչƣδļݽWCDMALTEԺԼ4Gչ棬йİţƽ4GıͼݽĿǰ˵ؿHSDPAHSUPAHSPA+LTEⷽݽ·߷dzˣйͨҪͲ𣬰4Gչδվݽ
йŸܲȪʾۺойҲLTEΪƶݽĿͷҪԭǣĿǰWCDMATD-SCDMAȷLTEݽTD-SCDMAԭƻлƶݽ滮ùѾֹͣˣңʵϹһЩзҲֹͣоUMBҲѾͣˡϼҪCƶӪ̣DzLTEݽˣйſѡLTEܻȽϳļḻIJҵڹΣḻնΪû߸õķ
йƶܲɳԾȷʾTDLTEݽ˵˵2G3GûпԵı仯Ԥ3GLTEǸԵı仯Ժ̶ྺļţδLTEķչƶʢõܺõķչTD-LTEҪ߹ʻƶʽӪ̵κʱҪǿǶδжϺͶδݽͷչ
ĵַ:http://www.cnonline.org/2008/article/10978.html