IP RAN 体系架构

1IPRANSolutionArchitecture2NodeBBTSMSCnxT1/E1FRE1BSCFRAggSiteWithLegacyTDMandATMswitchIP/MPLSCoreATMRNCPDSNorSGSNCoreSiteIMABSCSDHATMSDHSDHATMSDH•RANtrafficviaTDM/SDHNetwork•Allbandwidthis“nailed-up”•Allscalingmustbeplannedforprovisioning•SeparatenetworksforRANandCoreRANSolutionOverviewTraditionalTransport3RANBackhaultodayƒCurrentbackhaulnetworksweredesignedfordedicatedlowbandwidthapplicationssuchasvoiceƒTherearestrictQoSrequirementssuchaslowdelay,jitterandclocksyncƒTDMtraffic/bandwidthisdedicated,pointtopointandstaticallymappedanddesignedforcontinuousflowƒ2G,2.5Gand3GtrafficfromthesamecellsiteusetheirownT1/E1linksƒNowaytodynamicallyassignavailablebandwidthƒUnusedbandwidthisinthe“Wrongplaceatthewrongtime”Problemdefinition4DefiningtheMarketspaceDemandgenerationWhatisdrivingbandwidthrequirements?NewUMTS/HSDPAservices(3Gdataservices)•Mobiledatatransfers•Videotelephony•Radio•Podcastsandmusicdownloads•LiveTV–news,trafficreports,sports•Wirelessinstantmessaging•StreamingVideoonDemand•Mobilegaming•Locationbasedservices5PrimemotivationsforNewRANAllTDMTDMYesterdayTDMPacketPacketCoreTodayPacketAllPacketTomorrow•Trafficandrevenueshiftsfromvoicetodata•Drivedownbandwidthcosts•EthernetisaneffectivetechnologytocarryIP•Increasebackbonebandwidth•Rolloutnewservicesfaster•VideoacceleratestheproblemShiftingthefundamentalbasisuponwhichtelecomnetworksweredesignedsotheyneedtobeoptimizedforcarryingpacketbaseddataratherthancircuitbasedvoice6•AllRANtrafficaggregatedandtransportedviaPWE3overMPLS•Optimize2G,3GTrafficfromthecellsite•Off-load3G,4GData•ImbeddedIPSecurity•HighAvailabilityIPRANPortfolio2G3G4GPWE3Internet/IntranetIP/MPLSCorePseudowireoverMPLSPseudowireoverMPLSMWR-2941MWR-29413GDataOff-loadPSTNMWR-2941BSCRNCCisco7600Pre-Agg.SiteCoreSiteCoreSiteBSCRNCMSCCisco7600ONS15454Cisco7600Agg.SitePre-Agg.SiteOptimizedPseudowireIP/MLPPPPWE3PWE3PWE3PWE3PWE3PWE3PWE3PWE3PWE3PWE3PWE3PWE3BSCRNCCisco7600IP/MPLSCoreCisco76xx77600withCEOPSMWR2941CellSitePreAggregationATMSTM-1SDH/EthernetbackhaulBSCRNCBTSSDH/EthernetuplinkSDH/EthernetuplinkBSCRNCNodoBBTSNodoBSTM-1cATMSTM-1STM-1cAggregation7600w/CEOPS7600withCEOPSSDH/EthernetTELCEL/AMX-SolutionOverviewEthernetEthernetnxE1nxE1PacketnetworkLegacynetwork(TDM,ATM)NodoBNodoBnxE1nxE182Gand3GpacketbackhaulusingPWE3Packet3GRNC7600STM1/OC3E1AlltrafficcarriedoverpacketbasednetworkusingpseudowiresThissolutionneedscellsiteroutersupportingCiscoPWE3(MWR).Adaptiveclockingoverpacket(CEoPscardin7600)TDMandATMpseudowiresbetweenMWRand7600SIP400withGE–SPAE1–SPAATM-STM1-SPACEoPS-SPASIP400withGE–SPAE1–SPAATM-STM1-SPACEoPS-SPAMWR2GBSCC.STM1/OC3TDMnxE1/T1TDMFE/GEGEE1ATMIMA3Gdata,voice,signalingAdaptiveClocking2Gvoice,signalingNodeBGSMATMPWE1BITSClockingPWTDMPW97600SeriesInvestmentProtection760480Gperslot4slotsS-ChassisScaleto80Gig/SlotControlPlaneScaleto2TData&ServicePlaneScaleto40Gig7606S80Gperslot6slots7603S80Gperslot3slotsSup-32Sup-720RSP-720RSP720-10GEEvolutionto2TerabyteSIP400SIP600ES+40ES20RSP-2T7613-S80Gperslot13slots7609S80Gperslot9slots80G80G/LCPlannedInterfaceScaleDiversityCEoPsATMPOSEthernetIPSECDWDM10Evolutionfrom3GtoI-HSPAtoLTEAccessCoreNodeBRNCAggregationNodeBAccessCoreeNodeBAggregationeNodeBaGWMajorityoftrafficispointtopointLightlymeshedtopologyMajorityoftrafficispointtopointLightlymeshedtopologyTrafficaggregation(3G,LTE)andlocalswitching(LTE)closetocellsitesTrafficaggregation(3G,LTE)andlocalswitching(LTE)closetocellsitesBackhaulandcoredirectlymeet(3G:separatedbyRNC)Backhaulandcoredirectlymeet(3G:separatedbyRNC)11VideoCaseStudyƒEthernetLayer2ƒ7.2GbpsperRingƒL3IPMulticast/MPLSƒ300MbpsperRingDeployingL3reducesBW(24xinthisexample)*Assumptions•50SDCh.@6Mbps•20sitesperring•60userspersite12Additionalinfo1314HowdidtheRANLookSomeTimeAgo?BTSNodeBMGWCellsite10,000+PreAgg500+Aggregation30+Coresite2+VoiceDataGGSNSGSNSDH/SONETATMSDH/SONETATMBTSNodeBMicrowaveRANCoreADMBSCRNCE1sLeasedline15HowdoestheRANLookToday?BTSNodeBMGWCellsite10,000+PreAgg500+Aggregation30+Coresite2+VoiceDataGGSNSGSNSDH/SONETATMBTSNodeBMicrowaveRANCoreADME1sLeasedlineBSCRNCIP/MPLS16IP/MPLSHowCouldtheRANlookin0-12Months?BTSBSCNodeBMGWCellsite10,000+PreAgg500+Aggregation30+Coresite2+VoiceDataGGSNSGSNBTSMicrowaveRANCore76047609PWoverIP/MPLSCellSiteClockingLeasedlinePWoverIP/MPLSRNCNode-BwithEthernetinterfaceAlltraffictransportedasATMPseudowiresoverMPLSfromNode-Bto7600NodeB17PWoverIP/MPLSIP/MPLSHowCouldtheRANlookon1-2Years?BTSBSCNodeBRNCMGWCellsite10,000+PreAgg500+Aggregation30+Coresite2+VoiceDataGGSNSGSNBTSMicrowaveRANCorePWoverIP/MPLSCellSiteNodeBIP/MPLS76047609ClockingNode-BwithnativeIPsupportAlltrafficrouteddirectlyinIPoverMPLSEdgeNetworkTDMPseudowiresoverMPLStotransport2Gtraffic18PWE3overDataNetworkElementsMPLSAttachmentCircuitAttachmentCircuitPseudo-WireCEMCircuit7600-PE7600-PECEMCircuitE1DataE1DataTargetedLDPSessionPPLDPLDPLDPIGPIGPIGPEthernet7600-PE7600-PEE1DataE1DataL2SwitchL2SwitchLDPIGPTargetedLDPSessionE1DataControlMPLSMPLSL2E1DataControlMPLS802.1qL2L3NetworkL2Network19ProtocolLayerChoicesCellSiteAccessLayerAggregationLayerGERingAggSiteAggSi