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The base transceiver station, or BTS, contains the equipment for transmitting and receiving radio signals (transceivers), antennas, and equipment for encrypting and decrypting communications with the base station controller (BSC).
A "location area" is a set of base stations that are grouped together to optimize signaling. Typically, tens or even hundreds of base stations share a single Base Station Controller (BSC) in GSM, or a Radio Network Controller (RNC) in UMTS. The BSC / RNC is the intelligence behind the base stations; it handles allocation of radio channels ...
As a mobile unit engaged in a call moves away from a cell site or formally known as Base transceiver station and its signal weakens, the BSC or RNC(3G UMTS) will automatically instruct it to tune to a different frequency, one assigned to the newly entered BTS. This process is called handoff.
After successful authentication, the MSC sends the encryption key K c to the base station controller (BSC) so that all communications can be encrypted and decrypted. Of course, the mobile phone can generate the K c itself by feeding the same RAND supplied during authentication and the K i into the A8 algorithm.
A base transceiver station (BTS) or a baseband unit [1] (BBU) is a piece of equipment that facilitates wireless communication between user equipment (UE) and a network. UEs are devices like mobile phones (handsets), WLL phones, computers with wireless Internet connectivity, or antennas mounted on buildings or telecommunication towers.
Base transceiver station (BTS) Base station controller (BSC) Packet Control Unit (PCU) They can remain in the network and be used in dual network operation where 2G and 3G networks co-exist while network migration and new 3G terminals become available for use in the network.
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.
In cellular wireless networks, such as GSM, the picocell base station [2] is typically a low-cost, small (typically the size of a ream of A4 paper), reasonably simple unit that connects to a base station controller (BSC).