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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.
A future Mars base has been compared to the Amundsen-Scott South Pole Station in Antarctica, because relatively small groups must survive in extreme conditions there. [ 4 ] Mars analogs are sometimes chosen for their location, for example, Devon Island is at 75°N latitude which provides solar radiance similar to the Martian Equator. [ 5 ]
The base station has absolute control over the air interface and schedules the downlink access as well as the uplink access of all devices. The MAC protocol is specified by 3GPP in TS 25.321 [ 6 ] for UMTS, TS 36.321 [ 7 ] for LTE and TS 38.321 [ 8 ] for 5G .
The base station is one end of a communications link. The other end is a movable vehicle-mounted radio or walkie-talkie. [6] Examples of base station uses in two-way radio include the dispatch of tow trucks and taxicabs. Basic base station elements used in a remote-controlled installation. Selective calling options such as CTCSS are optional.
The Open Base Station Architecture Initiative (OBSAI) was a trade association created by Hyundai, LG Electronics, Nokia, Samsung and ZTE in September 2002 with the aim of creating an open market for cellular network base stations. The hope was that an open market would reduce the development effort and costs traditionally associated with ...
An Aerial base station (ABS), also known as unmanned aerial vehicle (UAV)-mounted base station (BS), is a flying antenna system that works as a hub between the backhaul network and the access network.
The base station subsystems (BSS) which handles the radio communication with 2G and 2.5G mobile phones. The UMTS terrestrial radio access network (UTRAN) which handles the radio communication with 3G mobile phones. The visitor location register (VLR) provides subscriber information when the subscriber is outside its home network.