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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.
An Android phone, showing that it is connected to a 5G network. In telecommunications, 5G is the fifth-generation of cellular network technology, as the successor to the fourth-generation (), and have been deployed by mobile operators worldwide since 2019.
A wireless telephone base station communicates with a mobile or hand-held phone. For example, in a wireless telephone system, the signals from one or more mobile telephones in an area are received at a nearby base station, which then connects the call to the land-line network. Other equipment is involved depending on the system architecture.
The most common example of a cellular network is a mobile phone (cell phone) network. A mobile phone is a portable telephone which receives or makes calls through a cell site (base station) or transmitting tower. Radio waves are used to transfer signals to and from the cell phone.
A baseband processor (also known as baseband radio processor, BP, or BBP) is a device (a chip or part of a chip) in a network interface controller that manages all the radio functions (all functions that require an antenna); however, this term is generally not used in reference to Wi-Fi and Bluetooth radios.
Spectrum of a baseband signal, energy E per unit frequency as a function of frequency f. The total energy is the area under the curve. The total energy is the area under the curve. In telecommunications and signal processing , baseband is the range of frequencies occupied by a signal that has not been modulated to higher frequencies. [ 1 ]
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. [3] CableFree 4G/5G Remote Radio Head (RRH) with 2x2 MIMO, 2x20W RF power and CPRI fibre interface
[1] [2] [3] C-RAN is a centralized, cloud computing-based architecture for radio access networks that supports 2G, 3G, 4G, 5G and future wireless communication standards. Its name comes from the four 'C's in the main characteristics of C-RAN system, "Clean, Centralized processing, Collaborative radio, and a real-time Cloud Radio Access Network".