Upload
mahe2020
View
222
Download
0
Embed Size (px)
Citation preview
8/7/2019 Itg521 2010 Lte Son Unibremen
1/26
ComNets
XiLiandLiang Zhao
ComNets UniversityofBremen06.October2010
OverviewandResearchAspectsofLTESON
ITGFG5.2.1WorkshopStuttgart
8/7/2019 Itg521 2010 Lte Son Unibremen
2/26
ComNets2
Outline
MainDriversforSONinLTE
IntroductionofLTESON
StandardizationStatus
SONFunctionalities
SONArchitecture
RelatedWorkandResearchProjects
MainResearchAspectsofLTESON
RadioNetwork
TransportNetwork
Conclusions
8/7/2019 Itg521 2010 Lte Son Unibremen
3/26
ComNets3
Outline
MainDriversforSONinLTE
IntroductionofLTESON
StandardizationStatus
SONFunctionalities SONArchitecture
RelatedWorkandResearchProjects
MainResearchAspectsofLTESON
RadioNetwork
TransportNetwork
Conclusions
8/7/2019 Itg521 2010 Lte Son Unibremen
4/26
ComNets4
LongTermEvolution
eNB
eNBeNB
eNB
MME
S-GW / P-GW
MME
S-GW / P-GW
EPC (Evolved Packet Core)
E-UTRAN
S1
X2
eNB:EUTRANNodeBMME:MobilityManagementEntitySGW: ServingGatewayPGW: PDN(PacketDataNetwork)Gateway
The3GPPintroducesLong
TermEvolution (LTE)
highthroughput
lowlatency
increasedsystemcapacity
Improvedcoverage
performance
fortheNextGeneration
MobileNetwork (NGMN)
8/7/2019 Itg521 2010 Lte Son Unibremen
5/26
ComNets5
MainDriversforSONinLTE
RolloutoftheLTEleadsto
rapidlyexpandingnumberofBaseStations(newsites)
paralleloperationof2G,3GandLTE
muchhighercomplexityinnetworkinfrastructureandnetwork
management(Operation&Maintenance)
SelfOrganizingNetwork(SON)aimsto
configureandoptimizetheLTEnetwork
automaticallyby
SelfConfiguration
SelfOptimization
SelfHealing
(Source:SOCRATESProject)
8/7/2019 Itg521 2010 Lte Son Unibremen
6/26
ComNets6
MainObjectivesofSON
Network
Planning
Network
Planning Network
Deployment
Network
Deployment Network
Optimization
Network
Optimization Network
Maintenance
Network
Maintenance
SelfConfiguration functions
reduceCAPEX
SelfConfiguration functions
reduceCAPEXSelfOptimization&energysaving
reducesOPEX
SelfOptimization&energysaving
reducesOPEX
SelfOptimization andSelfHealing
functionsimproveuserexperiences
SelfOptimization andSelfHealing
functionsimproveuserexperiences
8/7/2019 Itg521 2010 Lte Son Unibremen
7/26
ComNets7
Outline
MainDriversforSONinLTE
IntroductionofLTESON
StandardizationStatus
SONFunctionalities SONArchitecture
RelatedWorkandResearchProjects
MainResearchAspectsofLTESON
RadioNetwork
TransportNetwork
Conclusions
8/7/2019 Itg521 2010 Lte Son Unibremen
8/26
ComNets8
StandardizationStatus
3GPP hasintroducedSONalongitsstandardizationpathas
requiredfeaturesforLTEdeployments
Release8
eNB Selfconfiguration S1,X2interface
AutomaticNeighborRelation
AutomaticPhysicalCellIDassignment Selfoptimization
Basicmobilityloadbalancing
MultivendorSONinterworking
Release9
Coverage&Capacityoptimization
Mobilityloadbalancing
Mobilityrobustoptimization
RACHoptimization
AnimportantsourceofLTESONdevelopmentistheindustry
forumNGMN (NextGenerationMobileNetworks)
8/7/2019 Itg521 2010 Lte Son Unibremen
9/26
ComNets9
3GPPSpecificationsforSON
3GPPTS36.902,Evolved UniversalTerrestrial RadioAccessNetwork(EUTRAN);SelfConfiguring andSelfOptimizing Network (SON)UseCases andSolutions
3GPPTS32.500,Telecommunication management;SelfOrganizing
Networks(SON);Concepts andrequirements
3GPPTS32.501,Telecommunication management;SelfConfigurationofNetwork Elements;Concepts andIntegrationReference Point(IRP)Requirements
3GPPTS32.502,Telecommunication management;SelfConfigurationofNetwork ElementsIntegrationReference Point(IRP);InformationService(IS).
3GPPTS32.511,Telecommunication management;AutomaticNeighbour Relation(ANR)management;Concepts andrequirements
3GPPTS32.690,Telecommunication Management;InventoryManagement(IM);Requirements.
8/7/2019 Itg521 2010 Lte Son Unibremen
10/26
ComNets10
Functionalities ofSON
SelfConfigurationSelfConfiguration
plugandplayofneweNBs
automaticneighborlists
selfconfiguringRF&
transport
.
SelfOptimizationSelfOptimization
coverage&capacityopt.
neighborlistopt.
interferencecontrol energysavings
automatichandoveropt.
.
SelfHealingSelfHealing
automaticdetectionof
failures
automaticadjustmentof
parameters
healingschemes
MainBenefits
8/7/2019 Itg521 2010 Lte Son Unibremen
11/26
ComNets11
SONArchitecture
Source:Nomor Research:WhitePaper"SelfOrganizing
Networks(SON)in3GPPLongTermEvolution"
8/7/2019 Itg521 2010 Lte Son Unibremen
12/26
8/7/2019 Itg521 2010 Lte Son Unibremen
13/26
ComNets13
RelatedWorkandResearchProjects
The SOCRATES (SelfOptimisation andselfConfiguRATion in
wirelEss networkS)Project
EU7thFrameworkProgram
Jan.1,2008 Dec.31,2010
Projectobjectives
Developmentofmethodsandalgorithmsforselforganization
Specificationoftherequiredmeasurements
Validationanddemonstrationofthesolutions
Assessmentoftheoperationalimpact
Inputto3GPPstandardizationandNGMNactivities
8/7/2019 Itg521 2010 Lte Son Unibremen
14/26
ComNets14
RelatedWorkandResearchProjects
The Endtoendefficiency(E3) Project
FP7ECIntegratingProject(IP)
Jan.1,2008 Dec.31,2009
Projectobjectives:
Design,develop,prototypeandshowcasesolutionsto
guaranteeinteroperability,flexibilityandscalabilitybetweenexistinglegacy
andfuturewirelesssystems
managetheoverallsystemcomplexity
ensureconvergenceacrossaccess
technologies,businessdomains,regulatory
domainsandgeographicalregions
8/7/2019 Itg521 2010 Lte Son Unibremen
15/26
ComNets15
RelatedWorkandResearchProjects
Contributionsbydifferentequipmentvendors,independents,andITvendors
Source:from actix
8/7/2019 Itg521 2010 Lte Son Unibremen
16/26
ComNets16
Outline
MainDriversforSONinLTE
IntroductionofLTESON
StandardizationStatus
SONFunctionalities SONArchitecture
RelatedWorkandResearchProjects
MainResearchAspectsofLTESON
RadioNetwork
TransportNetwork
Conclusions
8/7/2019 Itg521 2010 Lte Son Unibremen
17/26
ComNets17
MainResearchAspectsofLTESON
GeneralconsiderationsforallSONfunctions
DefinerequiredmeasurementsattheeNB andUE
Definetherequiredmeasurementparameters
Definethemeasurementfrequencyforeachparameter
Definealgorithmstotriggerparameteradjustments
Determinethethresholdstotriggerparameteradjustments
Determinethefrequencyofparameteradjustments
DefinerulesofcoordinationandcooperationamongdifferentSONfunctions
DesignSONarchitecture
CentralizedSON,ordistributedSON,orhybridSON
8/7/2019 Itg521 2010 Lte Son Unibremen
18/26
ComNets18
MainResearchAspectsofLTESON RadioNetwork
MobilityLoadBalancingOptimization:tooptimizecellreselection/HO
parameterstocopewiththeunbalancedtrafficload
Whatshallbetheproperloaddefinition?
radioload,transportnetworkload,oreventheprocessingload
Splitbetweenuplinkanddownlink
SplitbetweendifferentQCIs
Algorithmforloadbalancing
Thealgorithmcanbebasedonradioload,ortransportnetworkload
orbothofthem
Ifbothradioloadandtransportnetworkloadareconsidered,which
onewillhavehigherpriority?
ThealgorithmshallalsoconsiderdifferentiationamongQCIs
Howtoadjustparametersforcellreselection?
8/7/2019 Itg521 2010 Lte Son Unibremen
19/26
ComNets19
MainResearchAspectsofLTESON RadioNetwork
CoverageandCapacityOptimization:tooptimizethenetworkcoverage
andmaximizethesystemcapacity
Solutionstodetectthecoverageandcapacityproblemsautomatically
basedoneNB measurementsandUEreports
Designaradioplanningtool tosolvetheproblems
Interferencereduction
MobilityRobustOptimization:toautomaticallyadjustthemobility
parameters
Solutionstosolvethemobilityproblems,e.g.
Toidentifyanonsuitablecell
Toidentifyproblematicsettingsofcellselection/reselectionparameters MinimizeHOs whenaUEistransitedfromidletoactivemode
8/7/2019 Itg521 2010 Lte Son Unibremen
20/26
ComNets20
MainResearchAspectsofLTESON RadioNetwork
EnergySaving: tocutonoperationexpensesbyenergysaving
Switchoffcells (especiallyneededwhenalargernumberof
HomeeNBs aredeployedinthenetwork)
Mainissue:whentoactiveanddeactivatetheeNBs andhow?
Adaptthetransmissionpower
Adaptthetransmissionpowerwhilealsoensuringnoinfluenceon
thecoverage,handoverandloadbalancing
Adaptthemultiantennaschemes:someoftheantennascan
beswitchedofftosavethepower
AdaptamongSIMO,MIMO,Beamforming toachievethe
maximumcapacitywiththeminimumtransmissionpower
8/7/2019 Itg521 2010 Lte Son Unibremen
21/26
ComNets21
MainResearchAspectsofLTESON TransportNetwork
IntroductionofSONfortheLTETransportNetwork
Tooptimizethetransportresources(i.e.capacity)utilization
Tosavetheoperationcosts(formanualconfigurations)and
bandwidthcostswithoptimizedresourceutilization
PossibleAspects:
AutomatictransportQoS optimization
Automatictransportcapacityallocation
Loadbalancinginthetransportnetwork(e.g.applyingtraffic
engineeringmethods)
Transportadmissionandcongestioncontroloptimizations
8/7/2019 Itg521 2010 Lte Son Unibremen
22/26
ComNets22
MainResearchAspectsofLTESON TransportNetwork
TransportSONfunctions: Dynamicbandwidthallocation
Bandwidthallocationshallfollow thechangesintrafficload
estimatingeffectivebandwidth
whentotriggerthebandwidthupdateandhow
DynamictuningofQoS parameters
e.g.DiffServ modelparameters,schedulerparameters,buffermanagementparametersperQoS class
Optimalconfiguration/reconfigurationofeNB connectivitywiththeSGW
fortheMultiS1scenario(i.e.oneeNB connectedwithmultipleGWs),howtoconfigure/reconfigureincaseofoneSGWfails
Optimalloadbalancing
e.g.toapplyMPLS(Multiprotocol LabelSwitching) Trafficengineeringmethod
8/7/2019 Itg521 2010 Lte Son Unibremen
23/26
ComNets23
Outline
MainDriversforSONinLTE
IntroductionofLTESON
StandardizationStatus
SONFunctionalities SONArchitecture
RelatedWorkandResearchProjects
MainResearchAspectsofLTESON
RadioNetwork
TransportNetwork
Conclusions
8/7/2019 Itg521 2010 Lte Son Unibremen
24/26
ComNets24
Conclusions
SONisapromisingapproachtosignificantlyreducethenetwork
installationandoperationcosts,andaswellcanimprovethe
userexperiences
3GPPandNGMNhavedefinedasetofLTESONusercasesand
associatedSONfunctions
FurtherResearchesondifferentusercasesandSONfunctions
areneededfortheLTE
LTERadioSON
LTETransportSON
8/7/2019 Itg521 2010 Lte Son Unibremen
25/26
ComNets25
References
1. 3GPPTS36.902,EvolvedUniversalTerrestrialRadioAccessNetwork(EUTRAN);SelfConfiguringandSelfOptimizingNetwork(SON)UseCasesandSolutions
2. 3GAmericas:TheBenefitsofSONinLTE,December2009
3. Nomor Research,WhitePaper:"SelfOrganizingNetworks(SON)
in
3GPP
Long
Term
Evolution
4. NEC,WhitePaper:"SelfOrganizingNetwork"
5. Motorola,whitepaper:"LTEOperationsandMaintenanceStrategy UsingSelfOrganizingNetworkstoReduceOPEX"
8/7/2019 Itg521 2010 Lte Son Unibremen
26/26
ComNets26
ThankYouforyourattention!
Q&A