行動通訊裝置是現代人必備的生活工具，包含手持裝置、電子家用設備及車用導航等都是生活不可或缺的嵌入式科技產品。其中行動網路技術進步十分迅速，現在最為普遍的為第三代行動通訊WCDMA。伴隨現在手持裝置與通訊技術的蓬勃發展，幾乎人手一支智慧型手機，讓人人無論在室內還是室外皆可透過3G輕易地連結到網路是一件十分普遍的事情，並且藉以達到網路無邊界的概念。

本論文使用的平台為英國樹莓派基金會2012年所開發的樹莓派Model B。目標是移植USB 3G網卡的驅動來達到客製化的功能，消彌廠商綁定固定型號3G網卡的詬病，並且從底層Linux Kernel到上層無線網路所相關的程式碼進行追蹤與修改，再透過於終端機下達指令進行撥號連線，實現嵌入式開發版上網的功能，最後利用視訊攝影機搭配3G網路，架設家用或是室外網路即時監控系統，來達成3G網際網路連線的應用。

Mobile communication device is essential for everyone, including mobile phones, tablets, electronic household equipment, car navigation and other electronic embedded systems which are indispensable in our life. There is a huge progress in the mobile network technology, especially the most popular third-generation mobile communication WCDMA. With the hand-held devices and communication technologies are now booming, most people have a smart phone. It is very common that people can access 3G and connect to the Internet no matter where they are. Thus, the network can create an idea of no boundary.

In this thesis, using Raspberry Pi Model B which is developed by the British Raspberry Pi Foundation in 2012. The target is to transplant usb 3G modem driver for achieving customization function and to avoid the vendor from locking specific model of usb 3G modem. Then, trace and modify Linux Kernel code from the bottom to the up about 3G network, and give instructions to connect to Internet by terminal. Finally, using video cameras with 3G network to set up home or outdoor network monitoring system for achieving network applications.

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