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Paper Mobile Security Dominion

If the mobile device clears this test, then the authentication between the security dominion and mobile device may begin. A method of authentication between the dominion and mobile device is proposed. Once the device and dominion are authenticated, assets within the dominion are available to the user. A method of building the dominion is also proposed to include the Android coding required.
             4. Cellular Networks and GSM .
             The need for a wireless infrastructure to support communications and data interactions is now more important than ever with the increased use of mobile devices. Global System for Mobile Communications (GSM) network is used as a test-bed by this thesis. The back-end of any cellular network is the Public Switched Telephone Network (PSTN), which extends out to the Network Subsystem (NSS) that contains the Mobile Switching Centers (MSC), among many other components. MSCs connect to each other and Base Station Subsystems (BSS) that each contains a Base Station Controller (BSC) attached to at least one Base Transceiver Station (BTS), or cell tower. The towers are the components that reach out and "talk" to the mobile devices through the over-the-air interface.
             GSM networks contain two separate channels by which mobile device users connect. These are an administration (control) channel and data transfer channel, which itself is comprised of various sub-channels. GSM networks are allotted a frequency range, which is broken down into these channels, eight in all. To avoid frequency overlap, the BTSs will divide their area of coverage up into sections. This also aids in mobile device handoff as it moves from cell to cell. BTSs in GSM networks continuously transmit RF signals on a control frequency for MCDs to detect while mobile stations are continuously scanning the forward control channel (FCC) for paging signals from base stations.
             The MCD, BSS and MSC are the components that primarily handle phone calls and text messaging.


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