Zte ZXSDR R8860E GU858 - System Running Environment

Chapter1SystemOverview
lThebasestationisdividedintoBBUandRRU.OneBBUprovidesthebaseband
resourceformultipleRRUs
lBBUperformsdigitalbasebandsignalprocessingandcontrolmanagement.
lRRUperformsconversionofthedigitalbasebandsignalandtheanalogRFsignal
betweenBBUandantenna.
lBBUconnectswithRRUthroughthebaseband-RFinterface(opticalinterface),and
transmitsI/QdigitalbasebandsignalandOAMsignalingdata.
lBBUconnectswithBSC/NodeBthroughAbis/Iubinterface.
lRRUrealizesMS/UEaccessthroughUm/Uuinterface.
DistributedBaseStationArchitecture
BBUandRRUconstitutethedistributedbasestationsystem.OnecentralBBUmanages
agroupofRRUs,realizingrapidandexiblecongurationandnetworkingforthe
basestationsystem.TheBBU+RRUsolutionisamoreexiblemodeforbasestation
establishment.Itreducesrequirementsfortheequipmentroomandthefeedercableloss.
BBUisarrangedindoorsandconnectedwithRRU(usuallyarrangedoutdoors)through
opticalber,asshowninFigure1-3.
Figure1-3DISTRIBUTEDBASESTATIONSYSTEMSTRUCTURE
1.3SystemRunningEnvironment
TherunningenvironmentofR8860EGU858isshowninFigure1-4.
1-3
SJ-20101210110401-001|2010-12-06ZTEProprietaryandCondential