【正文】 nerations, in the decades, updating technology unceasing development, from the original only text to text function, and a bination of voice and text munication function, and some are now the work era, this is a qualitative over. The popularity of smart mobile phone, is the mobile munication technology to a higher level, the work has bee the core of mobile munication function, now people cannot do without a mobile phone, also cannot do without the Inter, bow without the Inter, they say, is not to live. This thesis, mainly studies the switching technology of mobile munication technology, this technology is not a new technology, has many years of history, it is a mon birth and cellular technology, but also a special term cellular technology. We can say, the development of switching technology can promote mobile technology, this design is mainly about how to switch technology application in munication. 3G technology has been very mature, 4G has e to our life, because the 4G LTE does not have the function of conversation, so when the phone need to switch to 2G, the application of switching technology in 4G is particularly important. Keywords: switching technology, mobile munication technology, 4G, LTE V 目 錄 摘 要 ............................................................................................................................. III Abstract .......................................................................................................................... IV 目 錄 .............................................................................................................................V 第一章 緒論 .................................................................................................................... 1 移動通信系統(tǒng) ..................................................................................................... 1 移動通信特點 .......................................................................................... 1 移動通信工作方式 ................................................................................... 1 移動通信的發(fā)展 ................................................................................................. 2 全球移動通信發(fā)展歷程 ............................................................................ 2 課題研究的目的及內(nèi)容 ....................................................................................... 3 課題研究的意義 ................................................................................................. 3 第二章 切換技術 ............................................................................................................. 4 .................................................................................................. 4 切換的定義及分類 .............................................................................................. 4 .................................................................................................. 5 第三章 移動通信系統(tǒng)中的切換 ........................................................................................ 6 CDMA 系統(tǒng)中的切換 ............................................................................................. 6 CDMA系統(tǒng)概述 ......................................................................................... 6 CDMA系統(tǒng)中的軟切換 ............................................................................... 7 CDMA系統(tǒng)中的硬切換 ............................................................................... 8 GSM 系統(tǒng)中的切換 .............................................................................................. 8 GSM 系統(tǒng)概述 ........................................................................................... 8 GSM 數(shù)字移動通信的主要技術 .................................................................. 9 GSM 切換 .................................................................................................. 9 WCDMA 系統(tǒng)中的切換 ........................................................................................... 9 WCDMA 系統(tǒng)概述 ....................................................................................... 9 WCDMA 中的切換 ..................................................................................... 10 WCDMA 中的軟切換 .................................................................................. 12 第四章 中國 3G的切換 ................................................................................................... 13 3G的簡述 ......................................................................................................... 13 中國 3G的發(fā)展驅動力 ...................................................................................... 13 我國 TDSCDMA的切換過程 ............................................................................... 13 .................................................................................. 13 .........................................................................................