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KB Term:
Sigma KEE - Network4G
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4G
4G是第四代宽频行动通信技术，超越3G。 一个4G系统必须提供由ITU定义在进阶IMT的能力，IP通信，游戏服务，高解析行动电视，视讯会议，和3D电视。在2009年三月， 国际电信联盟无线电通信部门（ITU-R）订出一套对于4G标准的要求，命名为国际行动通讯进阶规格（IMT-Advanced）， 设定对于4G服务尖峰速率要求在每秒100兆位元（Mbit / s）（=每秒12.5兆字节）对于高行动通讯 （例如从火车和车子上）和每秒1千兆位元速率对于低行动性通讯（例如路上行人和非移动的使用者。(资料转载由维基百科)
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cellular 行動網路
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Sigma web home
Suggested Upper Merged Ontology (SUMO) web home
Sigma version 3.0 is
open source software
produced by
Articulate Software
and its partners
