User Manual

DELTANODE FIBER DAS MANUAL
©DeltaNode Solutions 2012
5
Revision 12-03
1.1 Definitions
Here is a list of the abbreviations, industry standard lingo and acronyms used in this document. It is
supposed to be a help for the reader and a reference section.
BGW
Base station Gateway
BIU
Base station interface. Also known as the DIU. It is the electrical interface between the
Master Unit (MU) and the operator radio base station or another source for the radio
signals, such as a off-air repeater.
BTS
See RBS.
DAS
A distributed antenna system. Several antennas connected together in a coaxial
network so that several antennas can be fed a signal from a central location.
DL
See “Downlink”
Downlink
The signals that are transmitted from a base station towards a terminal (phone).
Fiber
In this document it refers to the telecommunication fibers used to transmit modulated
light as pulses or analogue variations on a glass fiber. The DeltaNode Fiber-DAS system
should use single-mode fiber always.
Fiber-DAS
A general name for distribution systems using radio frequency on fiber (RF on Fiber)
technology. DAS means “Distributed Antenna System” which refers to the practice of
building “spreading nets” with coaxial cables, splitters and antennas to cover larger
structures.
FOI
Fiber-optic interface. Also known as DOI (DeltaNode Optical Interface)
FOR
Fiber-optic remote interface, part of the Remote Unit connecting to the fiber.
GSM
Global System for Mobile Communications
iDEN
Integrated Digital Enhanced Network
LTE
Long Term Evolution
MU
Master Unit. This is a rack that contains all the modules that builds up to the head end
in the system. This is where the radio base stations interface to the Fiber-DAS system.
This is also where the downlink signals from the base stations are converted into laser
light and sent over the fiber-optics to the Remote Unit (RU) and the uplink signals from
the RU are converted to radio frequency signals and transmitted to the radio base
station (RBS, BTS).
POI
Point of Interconnect, RF splitter/combiner unit
QMA
Type of RF Connector. Quick disconnect version of SMA RF Connectors. See SMA
RBS
Radio Base Station. The infrastructure unit normally connected to the antennas in the
radio access network (RAN) and sometimes called just Base Station or Base Transceiver
Station (BTS).
RGW
Remote Gateway Unit
RU
Remote Unit. This is the the unit closest to the antenna that converts the downlink
signal from the fiber to radio frequencies and distributes it over the antenna system. In
the reverse, the uplink radio frequencies are converted to modulated laser light and
transmitted back to the Master Unit (MU).
SC-APC
The type of connector used for all DeltaNode optical equipment. It is recommended
that all connectors between the MU and the RU are of this type. SC-AP can also be
accepted in patch panels. All connectors MUST BE ANGLED to avoid signal reflections
that are detrimental to the signal quality. Fibers need to be of single-mode type.