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  2. System Architecture Evolution - Wikipedia

    en.wikipedia.org/wiki/System_Architecture_Evolution

    System Architecture Evolution (SAE) is the core network architecture of mobile communications protocol group 3GPP's LTE wireless communication standard.. SAE is the evolution of the GPRS Core Network, but with a simplified architecture; an all-IP Network (AIPN); support for higher throughput and lower latency radio access networks (RANs); and support for, and mobility between, multiple ...

  3. UMTS Terrestrial Radio Access Network - Wikipedia

    en.wikipedia.org/wiki/UMTS_Terrestrial_Radio...

    The Uu is also external, connecting Node B with the User Equipment (UE). The Iub is an internal interface connecting the RNC with Node B. And at last, there is the Iur interface, which is an internal interface most of the time but can exceptionally be an external interface too for some network architectures. The Iur connects two RNCs with each ...

  4. Radio Network Controller - Wikipedia

    en.wikipedia.org/wiki/Radio_Network_Controller

    The Radio Network Controller (RNC) is a governing element in the UMTS radio access network and is responsible for controlling the Node Bs that are connected to it. The RNC carries out radio resource management, some of the mobility management functions and is the point where encryption is done before user data is sent to and from the mobile.

  5. GPRS core network - Wikipedia

    en.wikipedia.org/wiki/GPRS_core_network

    GPRS Tunnelling Protocol is the defining IP-based protocol of the GPRS core network. Primarily it is the protocol which allows end users of a GSM or WCDMA network to move from place to place while continuing to connect to the Internet as if from one location at the Gateway GPRS support node (GGSN).

  6. 2G - Wikipedia

    en.wikipedia.org/wiki/2G

    2G refers to the second-generation of cellular network technology, which were rolled out globally starting in the early 1990s. The main differentiator to previous mobile telephone systems, retrospectively dubbed 1G , is that the radio signals of 2G networks are digital rather than analog , for communication between mobile devices and base ...

  7. Time-division multiple access - Wikipedia

    en.wikipedia.org/wiki/Time-division_multiple_access

    Most 2G cellular systems, with the notable exception of IS-95, are based on TDMA. GSM, D-AMPS, PDC, iDEN, and PHS are examples of TDMA cellular systems.. In the GSM system, the synchronization of the mobile phones is achieved by sending timing advance commands from the base station which instruct the mobile phone to transmit earlier and by how much.

  8. List of platform-independent GUI libraries - Wikipedia

    en.wikipedia.org/wiki/List_of_platform...

    This is a list of notable library packages implementing a graphical user interface (GUI) platform-independent GUI library (PIGUI). These can be used to develop software that can be ported to multiple computing platforms with no change to its source code.

  9. Base station subsystem - Wikipedia

    en.wikipedia.org/wiki/Base_station_subsystem

    A BSC is often based on a distributed computing architecture, with redundancy applied to critical functional units to ensure availability in the event of fault conditions. Redundancy often extends beyond the BSC equipment itself and is commonly used in the power supplies and in the transmission equipment providing the A-ter interface to PCU.