Alcatel Carrier Internetworking Solutions 9500 MPR Cell Phone User Manual


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Thegrowingdemandfornew
broadbandservicesrequiresmore
connectivityandadditionalportsat
cellsites.Packettrafcgrowthfrom
thesenewbroadbandservicesdrives
bandwidthrequirementshigher—
upto20Mb/sto30Mb/spercellsite.
Thisincreaseisdrivenbypackettrafc
ratherthanvoicetrafc,socapacity
andqualityconstraintsaredifferent.
Asmobilenetworkinfrastructure
evolves,IP-nativebasestationswill
haveEthernetinterfacesratherthan
E1orT1.Thischangeinphysical
interfacesbringsnewchallengesto
backhaulnetworks;andbecausethe
transitionwillnothappenovernight,
backhaulnetworksmustmigrate
gracefullywhilesupportingamixed
payloadoflegacyTDMandgrowing
packettrafc.
The Need for IP Transformation
Figure 2. Traffic and Revenue Evolution with a Massive Introduction of
Broadband Services. Data traffic is growing fast but revenues are not
increasing at the same pace. You need more efficient ways to transport
the additional packet traffic generated by broadband services.
Traffic and
Revenue
Divergence
Time
Revenues
Voice Era Data Era
Packet
Traffic
IP TRANSFORMATION DRIVERS
•The need for additional
connectivity(ports)to
introducenewbroadband
technologiesandservices
(HSDPA,EV-DO,Wi-Fi
hotspots,WiMAX)
•Increased bandwidth
requirementsfornewpacket-
basedservices(20Mb/sto30
Mb/spercellsite)
•Physical interface changes
(Ethernetbasestations)which
avoidtheneedforseparate
overlaynetworkstosupport
Ethernetconnectivityand
backhaul
TheevolutionofmicrowaveradiofromTDMtopacket
technologiesenablesdata–awaretransport—whichcan
supportnewhigh–bandwidthserviceswhileleveraging
existingtechnologies.IPtransformationtypicallyseeks
toachievefourmajorgoals:
•Gradualtransformationofthenetwork—focusing
onareaswherecompellingeventsforceinvestment
inasolution
•Returnontheseinvestmentsinlessthantwoyears,
asaresultofOPEXsavings
•MinimizedOPEX,despitecapacityincreases—
whichrequiresoptimizingtheuseofscarce
resourcesandaggregatingallservicesovera
singlepipe,withnooverlays
•Useofamulti-vendormodel,withstandardprotocols
andnoproprietaryequipment
Alcatel-Lucent 9500 MPR – Microwave Packet Radio4
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