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高速上行分组接入

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高速上行分组接入High Speed Uplink Packet Access,縮寫HSUPA)是一种移动通信协议,它是因HSDPA上傳速度不足(只有384Kb/s)不足而開發的,亦稱為3.75G,其在一個5MHz載波上的傳輸速率可達10-15 Mbit/s(如採用MIMO技術,則可達28 Mbit/s)、上傳速度達 5.76Mb/s(使用3GPP Rel7技術,更達11.5 Mbit/s),令需要大量上傳頻寬的功能如雙向視訊直播或VoIP得以順利實現,所以具體上都比3.5G好。各電訊營運商亦表示在2007年末至2008年間會開通該服務。

版本

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HSUPA 有多个不同的版本,定义了不同的数据速度。

HSUPA Category Max Uplink Speed
Category 1 0.73 Mbit/s
Category 2 1.46 Mbit/s
Category 3 1.46 Mbit/s
Category 4 2.93 Mbit/s
Category 5 2.00 Mbit/s
Category 6 5.76 Mbit/s
Category 7 (3GPP Rel7) 11.5 Mbit/s

HSUPA网络

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目前已经或计划使用HSUPA网络的国家和地区:

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高速上行分组接入
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