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1、DESIGNING BACKHAUL NETWORKS WITH THE RIGHT QUALITY AND COSTJeff ValleyJune, 2014DESIGNING BACKHAUL NETWORKS WITH THE RIGHT QUALITY AND COSTJeff ValleyJune, 2014AGENDASmall cell backhaul challengesAccess backhaul options (wireless and wireline)End-to-End backhaul with IP/MPLSEnd to end backhaul solut

2、ionsSome case study examplesProfessional servicesThe 7705 SAR-W familySummarySMALL CELL BACKHAULREMOVING THE BARRIERS TO DEPLOYMENTSMALL CELL BACKHAUL CHALLENGES SOME TYPICAL SMALL CELL SITE CONSIDERATIONSSITE CUSTOMIZATION IMPACTS DEPLOYMENT VELOCITY, MANAGEMENT & COSTSGPS, Sync E, 1588v2Timing/Syn

3、cIndoor, outdoorTemperature extremesEnvironment3G, LTE, Wi-FiService Availability/QoSAC, DC, surge, holdup, PoEPowerMicrowave (LOS, NLOS, P2P, P2MP)Fiber (P2P, GPON)Copper (VDSL, bonding)SecurityTopologyQoS, multiple operatorsNetworkingTest/turn-up, monitoring Fault detection & correctionDemarc/OAMR

4、ight of way, trades access restrictionsSite AcquisitionBackhaul AccessOverview of 3G/4G Mobile Radio Access Network Architecture (Macro, SMALL and Femto Cell)Core Network (CN)HNB/HeNB GWBackhaul Network (IP/ETH)MGW/MGCLTE MMES1-C S1-U Packet Timing Server (NTP/1588 *)3G UMTS Node B4G LTE eNode B3G U

5、MTS Home Node BMACROSMALL/FEMTORadio Network Controller (RNC) X2IurhIubSeGW (*)IurLTE S-GWIuhS1-C S1-U SGSNIuPSIuCSIuCSIuPSCircuit Switch (CS) (PSTN)Packet Switch (PS)Enhanced Packet Core (ePC)4G LTEeNode BSMALL CELL BACKHAUL REQUIREMENTSBACKHAUL REQUIREMENTSCOMPARED TO MACRO CELLSCOMMENTSCostCheape

6、rCost per link needs to be lower Cost per bit may be similarCapacity Lower mean capacity, but burstierSmall cells generate less backhaul traffic than multi-cell/mode/band macro cells, but it is much burstier; Macro: up to 300 Mbps LTESmall: 5-100 expectedScalabilityMore scalableFaster growth, rapid

7、deployment, needs shorter lead time on new connectionsFrom 1-3 to 20 metros per km2LatencyPossibly more delay tolerantDepends on service offering to consumersMacro : max 10ms one-waySmall: expected up to 15 ms one-wayAvailabilityFive nines may not always be needed If small cells form an offload unde

8、rlay to a high availabilty macro; Macro 99.999Small: from 99 to 99.999Installation & commissioningFaster, simpler, cheaperBackhaul should move towards plug and playSources: NGMN Alliance and Small Cell ForumTHE MOBILE OPERATOR AND THE TRANSPORT PROVIDERMANAGING QUALITY IN A HYBRID ENVIRONMENTL2/L3 N

9、etworkSmall C ell RouterCommonBackboneEdgeRoutersLeased SegmentOAM ServiceLeased ServiceNIDNIDOperator SLA Verification E2E Backhaul Service Verification Transport SLA VerificationExample Mobile KPIsAccessibility: Mobile network and resources Retention: Non-Dropped callsThroughput: User and CellDela

10、y: Voice, data and throughput impactsExample Backhaul KPIsThroughput: Peak and overbooking factorsPacket Loss Rates (PLR): Has big data impactPacket Delay (PD): Backhaul segmentPacket Delay Variation (PDV): Impacts QoS & timing deliveryAGENDASmall cell backhaul challengesAccess backhaul options (wir

11、eless and wireline)End-to-End backhaul with IP/MPLSEnd to end backhaul solutionsSome case study examplesProfessional servicesThe 7705 SAR-W familySummaryBACKHAUL ACCESSTECHNOLOGY POSITIONINGMETRO CELL ACCESS TECHNOLOGYPOTENTIAL CAPACITYKEY LIMITATIONSTYPICAL APPLICATIONMILLIMETER WAVE (LOS P2P)1000

12、Mb/sMax Distance 700mNeeds Line of SightAll Sites (End sites or hub)High-capacity, low latency, short hopsSUB-6 GHz (PROPRIETARY OR 802.11 BASED) 200 Mb/sDistance (300m)CapacityPerformance variabilityDelay, jitterEnd site applicationSingle HopNeeds LOS for predictable performanceIf unlicensed band,

13、vulnerable to interferenceGPON2.5 Gb/sAvailability of existing assetsEnd site applicationsLeverage fiber infrastructureVDSL w/ BONDING300 Mb/sDistance 1kmAvailability of existing assetsEnd site applicationsLeverage copper deploymentETHERNET (SERVICE)/FIBER10 Gb/sAvailability of existing assetsAll si

14、tesHigh capacity, strong QoS requirementsSelf-build or leasedA MIX OF TECHNOLOGIES TO DEAL WITH TCO, OPPORTUNITY AND SKILL SET AVAILABLE9500 MPR-sEXTENDING THE PORTFOLIO with 60 GHzHigh capacity at 60 GHz1 Gb/s, low latency 50s, maximum distance 1kmRapidly deployUnlicensed, with high immunity to int

15、erferenceOptical alignment for LoS deploymentPhysicalSmall footprint: 18 cm x 18 cm x 7 cmLight weight: 2.5 kg/5.5 lbsEnvironmentally hardened: -45C to +55CLow power consumption (18W)1 x RJ45 on CAT5e cable - supports power via PoE+SolutionValidated with 9500 MPR, 7705 SAR, and lightRadio metro cell

16、 portfoliosIntegrated management - 5620 SAMProfessional services supportP2P NLOSP2MP Sector Antenna60, 90, 120 End station9500 MPR-sEXTENDING THE PORTFOLIO with Sub-6 GHzHigh capacity at sub-6 GHz200 Mb/s LoS, PTMP 4 end-pointsMIMO for double capacity and improved availabilityProprietary interferenc

17、e mitigation nLOS/NLOSRapidly deploySub-6 GHz multiband support (from 2.3 GHz up to 6.0 GHz)Easy installation visual alignmentPhysicalSmall footprint: variable based on antenna modelLight weight: 2.5 kg / 5.5 lbs (max, dependent on antenna model)Environmentally hardened : -55C to +65CLow power consu

18、mption (15W)1 x RJ45 on CAT5e cable - supports power via PoESolutionValidated with 9500 MPR, 7705 SAR, and lightRadio metro cell portfoliosProfessional services supportMetro Cell Wireline Transport Options Copper and PON7330 ISAM FTTNGiGE7450 Ethernet Service Switch7750 SR10 GiGEMetro CellLocal Powe

19、rVDSL2 bonded (1 to 8 pair)7360 ISAM FTTUGPONSmall Cell RouterGiGEDSL TRANSPORTSmall Cell Router or PON ONT or PON SFP in MCOOpticalsplitterMetro CellLocal PowerMobile coreGiGEGiGEPON TRANSPORTConsistent operations over any mediaDSLAMnxVDSL2 Controller Site7705 SAR7705 SAR7705 SAR7705 SARGPON/EPON O

20、LTMicrowaveBACKHAUL OPTIONSEthernet7705 SARCWDM/DWDM CELL SITEBONDED xDSLGPON, EPONCWDM/DWDM MICROWAVE ETHERNET AGENDASmall cell backhaul challengesAccess backhaul options (wireless and wireline)End-to-End backhaul with IP/MPLSEnd to end backhaul solutionsSome case study examplesProfessional service

21、sThe 7705 SAR-W familySummarySMALL cell site BACKHAUL SOLUTIONSFLEXIBILITY IS KEY9500 MPR-s GPON/xDSLMETRO ETHERNETAGGREGATION AND TRANSPORT7705 SAR-OMicrowave7705 SAR-H7705 SAR7210 SAS9500 MPR-s 7750 SRControllers/ Gateways7705 SARBBUBroadband and Ethernet MicrowaveCPRI Fronthaul7705 SAR-W/Wx7705 S

22、AR-W/Wx7210 SAS1830 PSSBest LTE backhaul solution5620 SAMProfessional Services9500 MPR(Long-haul)CASE STUDY 1 OUTDOOR SMALL CELL BACKHAULISSUES & CHALLENGESSOLUTION APPROACH METRO ETHERNET& xDSLAGGREGATION AND TRANSPORTControllers/ GatewaysHead EndCapacity increase is the principal needExtending a m

23、acro backhaul network in dense metro areasScalable sync needed (frequency, phase, ToD)Support for eMBMS and VoLTEMeasuring and monitoring SLAs (e.g. delay)Metro Ethernet, xDSL, LOS and NLOS microwave media, with consistent operations and OAMTraffic stream aggregation via the macro networkIntegrated

24、GPS, with 1588 sync distributionIPv6, IP multicast, and advanced QoSX2 interface support improves performanceCASE STUDY 2 INDOOR SMALL CELL BACKHAUL ISSUES & CHALLENGESUser Traffic over IPSec Tunnels From Small Cells to SeGW and head end MBH routerOAM Traffic over IPSec Tunnel originated from VPRNLi

25、ne rate NAT-TIntegrated GPS receiver and GMSOLUTION APPROACH 1st FloorNth FloorSmall CellsBUSINESS BROADBANDControllers/ GatewaysHead EndLeverage standard Internet access, secure backhaul for rapid in-building deploymentSecure User trafficSecure OAM trafficDistribute accurate synchronizationCASE STU

26、DY 3 CLOUD-RAN CPRI FRONTHAUL ISSUES & CHALLENGESSOLUTION APPROACH MACRO CELL OR MTSOIP/MPLSETHERNET BACKHAUL8l CWDMCh 1-8LineOUTDOOR ENVIRONMENT4l CWDMCh 1-4LineExpBBURRHsOutdoor devices needed, e.g. for stadium deploymentRequire high capacity and low latency Fiber must be conservedMaximize integra

27、tion with IP/MPLS networkWavelength-based approach can deliver 10 Gb/s and sub ms transportCompact, rugged form factorsCWDM is efficient and operationally simpleCombined Ethernet/IP/MPLS and CWDM solution in macro siteCASE STUDY 4 wireless backhaul site planning and validationEnsure planning address

28、es real-world deployment challenges, especially in NLOS deploymentsAcquiring proven expertise and tools to expedite deploymentChoosing the right wireless technologyISSUES & CHALLENGESProven professional services:Ensures accurate site survey Stable & predictable performance, including NLOSProven plan

29、ning and site survey toolsComplete wireless transmission product portfolioSOLUTION APPROACH Google view estimationSite Survey PicturePROFESSIONAL SERVICES WHAT IS REQUIREDBACKHAUL ARCHITECTUREDETAILED ARCHITECTURETake network inventory and create high-level designConduct performance & reliability st

30、udiesSTRATEGYDEFINITIONDEPLOYMENT STRATEGYCapture objectives and plan portfolio evolutionEstablish technical requirements & blueprint definitionBUSINESSMODELLINGBUSINESS CASE FOR SUCCESSModel CAPEX/OPEX and estimate TCO , RoI etcPerform sensitivity and risk analyses (Tornado)THE 7705 SAR-W FAMILY OF

31、 SMALL CELL BACKHAUL ROUTERSDIFFERENTIATED ATTRIBUTES Any media Cu, Fiber, Microwave Flexible networking Ethernet, IP/MPLS Multi-level Hardware encryption Extensive range of techniques Integrated GPS and grandmaster Fully outdoor, power efficient Proactive SLA monitoring Massively scalable head endT

32、ens of thousands of devices Comprehensive managementAutomatic, service awareENABLING COST-EFFECTIVE COVERAGE AND CAPACITY IN MOBILE NETWORKSNETWORKING FLEXIBILITYSECURITYOPERATIONAL SIMPLICITYSYNCHRONIZATIONEND-TO-END SOLUTIONALCATEL-LUCENT 7705 SAR-W and 7705 SAR-WxTHE BUSINESS CASE FOR A UNIVERSAL

33、 SMALL CELL SITE ACCESS DEVICEBaseKEY FUNCTIONALITY7705 SAR-W/WxBASIC BACKHAUL ACCESSPowerAC/DC, holdover, surge protection, PoE supportPurchase separate power injector device; no holdover capabilityTiming/SynchronizationSyncE, 1588v2, TOD, Integrated GPSPurchase separately (GPS)Enhanced OAM and sec

34、urityY.1731, TWAMP, usec accuracy, IPSecPurchase demarc device separatelyL2 MPLS ServicesE-Line, E-LANNo MPLS, purchase router separatelyL3 Services (Routing, VPRN)Routing, VPRN, IPv6No routing, purchase router separatelyLinkage to e2e Service Mgmt7750 SR, 5620 SAMNot available$Basic Backhaul Access

35、 Device7705 SAR-W/WxItS TOUGH OUT THERE !AGENDASmall cell backhaul challengesAccess backhaul options (wireless and wireline)End-to-End backhaul with IP/MPLSEnd to end backhaul solutionsSome case study examplesProfessional servicesThe 7705 SAR-W familySummarySummaryMuch of the complexity(and cost) of

36、 Small Cells is in deployment and operations10:1 SCs to Macros is a lot of sites to manageMajor considerations to simplifyConsistent end-to-end architecturesPhysical interface agnostic designsIntegrated OAM/SLA assuranceCommon managementPhysical integrationUltimate goal: Improve mobile performance“c

37、heap” backhaul likely means higher TCOImproving backhaul KPIs simple solution to improving mobile performanceBACKUPTHE 7705 SAR-WDESIGNED FOR THE OUTDOORSOUTDOOR APPLICATIONS FOR BACKHAUL AND INDUSTRIES7705 SAR-WFEATURE HIGHLIGHTSCHASSIS10 Gb/s About the size of a laptop (10”x15”x2.6”)Environmentall

38、y hardened, fan-less Element-proof enclosure & connectivityINTERFACESEnvironmentally rated, externally accessible5 Ethernet ports (3 x SFP, 2 x RJ45)Optional PoE+1 x serial1 x RJ45 Ethernet OOB management SERVICESSame IP/MPLS feature set as 7705 SAR-MPOWERBuilt-in universal power: AC, AC with DC bac

39、kup or DC 7705 SAR-WTHE 7705 SAR-WxBUILDING ON A UNIQUE PRODUCT - DESIGNED FOR THE OUTDOORSOUTDOOR APPLICATIONS FOR BACKHAUL AND INDUSTRIES7705 SAR-WxFEATURE HIGHLIGHTSCHASSIS10 Gb/s 16.5cm x 35.6cm x 9.7cm (6.5” x 14” x 3.8”) Environmentally hardened, fan-less -40C to +55C, GR-950 compliant, IP65El

40、ement-proof enclosure & connectivityINTERFACESEnvironmentally rated, externally accessibleUp to 5 Ethernet ports (3 x SFP, 2 x RJ45)Optional DSL, GPS and PoE+1 x serial1 x RJ45 Ethernet OOB management SERVICESSame IP/MPLS feature set as 7705 SAR-MSECURITYHardware accelerated Encryption, NATMOUNTINGA

41、LU LightRadio MetrocellsPole, wall and strand mount designTHE 7705 SAR-ODESIGNED FOR OUTDOOR CPRI FRONTHAULOUTDOOR 4 COLOR CWDM OPTICAL ADD DROP MUX (OADM) AND 8 COLOR CWDM MUX/DEMUX7705 SAR-OFEATURE HIGHLIGHTSCHASSIS10” x10.5” x2”, (25.4cm x26.67cm x5.08cm) Fan-less , environmentally hardened IP65,

42、element-proof enclosure & connectivityINTERFACESFor the 4 color OADM, each port (Line, Exp, each of the channels) is on a separate connector.SERVICES4 color CWDM OADM and 8 color CWDM Mux/Demux. The 8 color Mux/Demux allows single fiber deployment.POWERNo power required7705 SAR-O4 variants7705 SAR-H

43、FEATURE HIGHLIGHTSCHASSIS5Gb/s, 1.7 RU, fan-less INTERFACES2x100/1000 SFP2 combo 100/1000 SFP/RJ454x 10/100/1000 (PoE capable), ToD-out (IRIG-B), Alarm, Console, ManagementMODULESCombination module: 2p T1/E1 plus 2p RS232 serial, GPSSECURITYIntegrated stateful firewall / NATEMI & ENVIRONMENT IEEE 16

44、13 and IEC 61850-3POWERLow voltage DC variant: two feeds: +24/-48 V DCHigh voltage AC/DC Variant: AC: 85 to 264 V AC, 50/60Hz DC: two feeds: +88 to +300 V DCTHE 7705 SAR-HCOMPACT, SECURE IP/MPLS ROUTER7705 SAR-HADDING ENHANCED SECURITY NETWORKING OPTIONS7705 SAR-8FEATURE HIGHLIGHTSCHASSIS12 Gb/s (v1

45、), 60 Gb/s (v2), 2RU2 CSM slots (1+1) &:v1: 6 slots 1 Gb/s FDv2: 4 slots 2.5Gb/s FD plus 2 slots 10Gb/s FDINTERFACESIn chassis: Console, Sync-in & Sync-out, ToD, Management, AlarmADAPTER CARDSPDH (T1,E1,DS3,E3), SONET, SDH, Ethernet (10M/100M/1G/10G), CWDM, Voice, Serial data, Teleprotection, Packet

46、 microwave, Auxiliary AlarmPOWERDual DC power feed, AC Solution availableTHE 7705 SAR-8COMPACT, POWERFUL AGGREGATION MACRO CELL/HUB ROUTERCOMPACT WITH FULL MODULAR FLEXIBILITY AND RELIABILITY7705 SAR-8 (v1/v2)MOBILE SERVICES flexibility and scalability7750 SERVICE ROUTERBACKHAULSeamless evolution to

47、 LTESmall cell, macro cellComprehensive synchronizationReliable and scalableIP MulticastWi-Fi GatewaySecure and trusted connectivity across Carrier Wi-Fi and cellularWLAN GW scalability/performanceSeamless mobile broadband experienceBackhaulService, Policy and Subscriber ManagementInternet & other n

48、etworksMobile Service Packet CoreMobile Packet CoreReliable, flexible and scalable subscriber service controlCommon platform for 3GPP mobile gatewaysMOBILE SERVICES DEPLOYMENT FLEXIBILITYAUGMENT RAN WITH USEABLE WiFi RELIABLY SCALE BACKHAUL CONNECTIVITYSECURE LTE RAN COMMUNICATIONSIPSec Security Gat

49、ewayCommon platform across Radio Access TechnologiesScalable, high throughput IPSec mobile tunnel terminationStateful IPSec failoverMETROCELL WITH 7705 SAR-W Use CasesOLTISAMDAISY CHAIN OF METRO CELLSSAR-WMPR-sSAR-WMetroCellAC powerPoE+METROCELL CONNECTED TO SAR-W WITH INTEGRATED SFP ONTSAR-W POWERI

50、NG (POE+) BOTH METROCELL AND MPR-SBackhaul:IP/MPLSGPONVDSL2Wireless (LOS/NLOS)SAR-W7705 SAR-WBased on 7705 SAR Family FunctionalityVery similar on the inside, different on the outsideRuggedized chassis10”x15”x2.6” (WxHxD)Environmentally hardened (-40C to +65C operating temperature, - 40C Cold-start)

51、Element proof enclosure/connectivityGR-950 compliant, IP65Integrates into the small cell housing/footprintALU cross product cooperationCustom integration may be possible for Non-ALU configurations7705 SAR-WWhat it doesFlexible powering optionsPower IN Universal powerAC: 85 264V with 1 second hold-up

52、DC : 20-75VPower OUTPoE+ with 1 second hold-upSolution ConsumptionSAR-W max power consumption is 50W, 32W Typical2 x PoE+ devices can draw an extra 51W (105W max for SAR-W and PoE+ devices)ConnectivityAll connectors externally accessible and environmentally rated5 Ethernet ports (3 x SFP/2 x RJ45 co

53、mbo)GPON SFP availablePoE+ on RJ45 portsInterface Variant OptionsxDSL (future)1 x Serial, 1 x RJ45 Ethernet OOB management portsMPR-sRJ45 1000 Base-TOptical GEAC powerAC/PoE powerSAR-WMetroCellFemto vs. Metro backhaul implicationsFemto architectures similar to HIS-based architecturesPublic single-IP

54、 on network side with DHCP/NATIPSec tunneling is always on in the FemtoArchitecture is well understood for broadband deliveryMetro architectures are open for debateFemto or standard Macro architecture (e.g. LTE)But, metrocells are inherently different from Home Femtos in that they are usually open s

55、ystemsPuts the responsibility on the mobile operators.Consistency with Macro architectures will help simplify deployment and expansionE2E servicesQoS policies, OAM, Turn-up procedures, L1/L2 independent, etc.Wireless RF design and optimization, handoff support, etc.Future enhancements: eICIC, eMBMS, SONMetro MBH Design Golden RulesConsider the next evolution step: Higher metro density