Search results
Results from the WOW.Com Content Network
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 station architecture evolved from all-in-one base stations, through Base-Band Units (BBUs) and Remote Radio Heads (RRH), to C-RAN architectures where equipment located at the cell sites Remote Unit (RU) or RU + Distributed Unit (DU) connects via fronthaul network to centralized baseband locations – Central Unit (CU).
In this architecture the radio function unit, also known as the remote radio head , is separated from the digital function unit, or baseband unit (BBU) by fiber. Digital baseband signals are carried over fiber, using the Open Base Station Architecture Initiative or Common Public Radio Interface standard. The RRH can be installed on the top of ...
Verband Berlin-Brandenburgischer Wohnungsunternehmen (BBU), part of GdW Bundesverband deutscher Wohnungs- und Immobilienunternehmen Beijing Bailie University , Beijing, China Build Bright University , Phnom Penh, Cambodia
This equipment is used to extend the coverage of a baseband unit in challenging environments such as rural areas or tunnels. RRHs are generally connected to the baseband unit or base station which can be an x86 server [ 2 ] on the ground near a cell tower, via a fiber optic cable using Common Public Radio Interface protocols.
The purpose of CPRI is to allow replacement of a copper or coax cable connection between a radio transceiver (used example for mobile-telephone communication and typically located in a tower) and a base station/baseband unit [3] (typically located at the ground nearby), so the connection can be made to a remote and more convenient location. [4]
Baseband bandwidth is equal to the upper cutoff frequency of a low-pass filter or baseband signal, which includes a zero frequency. Bandwidth in hertz is a central concept in many fields, including electronics , information theory , digital communications , radio communications , signal processing , and spectroscopy and is one of the ...
Small-cell networks can also be realized by means of distributed radio technology using centralized baseband units and remote radio heads. Beamforming technology (focusing a radio signal on a very specific area) can further enhance or focus small cell coverage.