Presentation on theme: "Conceptual View of KT NGN"— Presentation transcript:
0KT NGN and its Management Plan Mun Jo Jung*, Sung Hak Seok** Mun Jo Jung*, Sung Hak Seok***Technology Laboratory**Operations Support System LaboratoryHello, Ladies and Gentlemen.I am Mun Jo Jung, KT, Korea.Today, I want to talk about KT NGN and its Mgt Plan with you.I am more than delighted and excited to have an opportunity for today’s talk at this beautiful place in Japan.
1Conceptual View of KT NGN ContentsIntroductionConceptual View of KT NGNDevelopment Plan for KT NGN Management SystemInitial KT NGN ManagementClosingLet me briefly go over what I will talk about during the course of this presentation.As shown on this slide, I will spend a little time on describing KT NGN in introduction part, followed by Conceptual view of KT NGN, Development Plan for KT NGN Management System and Initial KT NGN Management.And then I’ll close my presentation.
2With Open Architecture Introduction(1)Drivers for NGNMarket ChangesUser ChangesBusiness Trends : Voice to Multi-MediaWireless Service IncreaseInternet Application ExpansionParadigm Changes: Cyber societyWide Spread of Multimedia PCMobile Multimedia Terminal TechnologyMixed(voice + video + data) Service NeedNGNMulti-serviceOn Single NetworkWith Open ArchitectureService LogicNext Generation Network- Multi-service over Single NetworkOpen ArchitectureTera-grade traffic processingIntelligent Service PoPBusiness changesTechnology changesSo, to start off with this topic, what is NGN and why should it be required?To understand the question, we need to look into the current status of Telcos in the Telecommunication market.Most Telcos suffer from decrease in Revenue due to:☞ Decrease in PSTN Traffic(affected by emergence of VoIP and Mobile Communication)☞ Fierce Competition in Open Telecommunication MarketAnd so they try to seek New Revenue Source through Multimedia by preparing for the integration of voice & data and the wired/wireless Convergence in All-IP architectureNGN has been considered as the vision of “broadcasting, information and communication anytime, anywhere, and in any form.”Many Telcos try to position themselves for radical transformation of their network and service infrastructures.It has become increasingly clear that a prerequisite for realization of such a vision is the convergence of the current multiple networks into a unified, multiservice, data-centric network, thereby offering variety of services at both different qualities and different costs on open service platforms.The evolution toward such a vision is undeniably influenced by the growing trends of deregulation in the telecommunications industry on one hand, and the rapidly evolving technological convergence between distributed computing and communications on the other hand.In a real sense, the necessary technological and environmental underpinnings exist today for next-generation service providers to start the transforming their infrastructures in ways that will enable provision of many new innovative services rapidly, economically, on a mass scale, and with improved quality control.Let’s see the drivers for NGN.We have four different views; Market changes, User changes, Technology changes and Businesses changes.In market changes, we find that the business trends move from voice centric services to multimedia services these days.We can use IMS, VoD, Video Phone service, etc. on the Internet.VoD is very important service in view of Telcos because Telcos have been focused on communication services so far.And the next one is Wireless services. They have become quite a force as more and more wireless terminals are spread among the public.New Internet Applications are being introduced and developed more than ever before to better our lives.Therefore, existing business paradigm is shifting toward Cyber World.In user changes, Multimedia PCs are widely spread into households.Users’ demands on new multimedia services are therefore dramatically increased.Under the demands, more mobile multimedia terminals are cheaply supplied and widely spread.In technology changes, High-speed optical network can be constructed with ease thanks to TSR, TES, WDM technology.Same service can be accessed through any media as Multi-Access technology is growing and service interfaces are open to any user.New services and business models can be created using open API.In business change, we need to avoid unnecessary multiple investments and cut the deployment/operation cost down.All these drivers predicate NGN’s emergence.New Service Network Architecture- Avoid Multiple Investment- Cut Deployment/Operation Cost DownNew Service/ Business Model- Need Multi-Service over Single NetHigh-Speed Capacity Network- TSR, TES, WDM, etcMulti-Access Technology Growth- Any Media, but Same Service- Open API
3Introduction(2) Network Provider Service Provider Technical Goal for NGNConstruct Multi-Service Converged NetworkIntegrated Wired and Wireless ServicesDifferentiated QoSSupport Easy and Fast Service Creation, Provisioning and AdministrationOpen ArchitectureSupply Reusable Common Service Building BlocksBusiness Goal for NGNNew Service Infrastructure for More ProfitsCost-down in Network and Service Deployment and OperationLeading Edge in Competitive Telecom MarketFor More Business OpportunitiesEnlarge Business Areafrom Network to ServiceDraw More CustomersCreate More ServicesEnterpriseServiceOperatorOtherNetworkOperatorServiceDeveloperNow Let’s talk about goals for NGN.I’ll talk specifically about technical goal for NGN first.Old telecommunication networks have been usually designed for a specific service before.When new services required new features of the network, service deployment took more time to construct new network for them.In NGN, we will construct multi-service converged network to avoid them.Secondly, we need to integrate wired and wireless services for a unified service environment.The third goal is that the converged network should have control-mechanism on end-to-end quality of services to support differentiated QoS on each service.The fourth is to design NGN to support easy and fast service creation, provisioning and administration.The fifth is NGN should embrace open-architecture for easy deployment of new services.The sixth is to supply reusable common service building blocks. There are many reusable common functions such as subscription management, charging, connection control, etc. In a unified multiservice network, these functions help us develop new services fast with no trouble.Let’s move on to the business goal now.The primary goal for NGN in business perspective is to create a new service infrastructure for more profit.Single converged network can cut down the cost in network operation and construction.And it also gives great advantage in competitive telecommunication market to network providers.One more goal is to create more business opportunities.NGN can broaden Telcos’ business area.Network centric services like ADSL, VDSL, etc. can be transferred to new application services.NGN can draw more customers because new customer groups such as Enterprise Service Operators and Developers can use open APIs in NGN.Open architecture of NGN will help to create more services more easily.End UserNetwork Provider Service Provider
4Conceptual View of KT NGN(1) Service LayerDPE (Distributed Processing Environment)Service Coordination LayerServiceAccessService Coordination FunctionalityServiceAdministrationNetwork LayerNow let’s talk about Conceptual View of KT NGN.When we design the network, this kind of conceptual view helps us classify many network functions into several functional groups.And so we can work them out in details based on Group activities.We have three different layers in vertical view. They are Network Layer, Service Coordination Layer and Service Layer.We have three domains defined horizontally. These are Access Domain, Core Network Domain and Service Supporting Domain.NetworkOperation &ManagementNetworkAccessNetwork FunctionalityAccess DomainCore Network DomainService Supporting Domain
5Conceptual View of KT NGN(2) For Easy Functional GroupingThree LayerService LayerService Coordination Layer and DPENetwork LayerThree DomainAccess Domain Functionality to be enrichedWeb-based Customer PortalService Access Differentiated from Network AccessIntelligent Terminal CapabilityCore Network Domain Functionality to be addedGuarantee QoSDynamic Resource ReconfigurationManage Topology of Service NetworkService Supporting Domain Functionality to be built inService and Resource AdministrationQoS Management and Network OAMLet’s see a little more about Layers. Service layer includes various applications like UMS, Voice conference and so on.Service Coordination Layer has many functions like mapping network resource in order to link network layer to service layer at desired service quality as well as service creation and administration function.Distributed Processing Environment will facilitate communication among servers.Access Domain can handle the process related to service subscription and access as well as network access.Different access types in both wired and wireless access, can be controlled and managed. Access speeds are also provisioned at different rate to meet the different demands of users.Web portal service for customers can be assigned to this domain.Secondly, Core Network Domain covers many functions to control and manage the core network to support various services. Policy management, bandwidth control and access aggregation are some examples.Thirdly, Service Supporting Domain is to support network management and service administration like service configuration, service registration, service deployment and so on, and also covers traditional network management functionalities as well.
6Conceptual View of KT NGN(3) Two-Step Approach for Sophisticated ServicesAuthenticationin Network Levelin Service Level from Per-Household to Per-PersonChargingon Network Accesson Service Various Billing Strategies: Bundling Services, One ClickAs Service Coordination Layer supports many functions to map service requirements to the network requirements, we can single out many service instances from network. These functions enable us to handle a specific service independently from network access service and take two-step approach per-household and per-service.We have broadband access service, named MEGAPASS and NESPOT in Korea. These services are focused mainly on network access speed rather than service speed or service quality.The competitive market in network access speed as its own merit appears saturated already in Korea.And so they try to create new business models and deploy them on NGN.Competition in network access has progressed to that in service access and quality of more sophisticated services for user.For this, two-step approach in authentication and charging will be adopted to provide more differentiated and personalized services.From this approach, Authentication service moves from per-household to per-person. Charging capability allows us more flexibility in devising new charging plan for a bundling service.
7Conceptual View of KT NGN(4) Technical TrendsService LayerUnifiedMsg.Ser.VoDSer.Cof.Ser.MedeaSer.PresenceSer.E-CommerceDPE(Distributed Processing EnvironmentServiceAccessService Coordination FunctionalityService AdministrationPolicyServiceAAAServerServiceMapUser ProfileService ProfileTerminal CapabilityService SubscriptionService ContractService InvocationService BundlingCustomized ServiceOne Stop Service ShopService Driven Resource ManagementService Mapping FunctionQoS Class aggregationAuthenticationService Component Inventory FunctionRoute/Topology ManagementService CreationService ProvisioningService LocationService ConfigurationService RegistrationPolicy AdministrationProfile AdministrationService AssuranceQoSMgrRes.MgrSer.Cord.TerminalIntelligenceNetworkIntelligenceSer.CallControlPGAccountingNetworkAccessNetwork FunctionalitiesConnectivityTransport with QoSMedia ConversionNetworkOperation &ManagementMPLSMobilityLet’s review the technical trends before going into KT’s construction plan.First, let’s start off with quick reviews on each group of Layers and Domains we defined.In network access, user id/pwd in general is required in order to access network and its services.But enhanced capability in terminal’s end requires more information to access and use the service.Setting the terminal mode and optimal terminal configuration for a specific service is an example.Wire and wireless access are likely to be integrated as the technology becomes available.Next, let’s talk about some current tendencies in network functionality. One of them is that monolithic network elements are divided into component based network elements. TGW, AGW and SSW are examples of component based network elements.Wired network or wireless network tends to be unified.And best efforts IP network is enhanced to support QoS and user mobility.Diffser, MPLS, HLR and VLR for mobility service are the technologies for them.In network operation and management, new EMSs for SGW, AGW, TGW, SSW etc. may be introduced as well as NGN NMS.One of the most important layers is Service Coordination Layer between network layer and service layer.This layer offers many functions in guaranteeing QoS, mapping service requirements into network requirements, and administrating differentiated services.In Service Access, many customer services will be handled on one stop service portal and integrated customer portal.The access paradigm has taken a big leap from old office based service access and subscription. Now the big improvement lies in user profile and service profile handling, service subscription and invocation, terminal configuration, new service announcement.Many researches are being conducted on Service Coordination Functionalities, these days.QoS and resource mapping, policy generation, service level authentication, service session control and binding, service security and SLA processing are a few examples.Service creation, configuration, provisioning service assurance, and management functions are grouped in Service Administration.AGWSGWUser ID/PwdTerminal RegistrationWired AccessWireless AccessSSWDiff.Ser .TGWVPNNMSEMSEMSMonolithsBest Effort IP NetworkWired NetworkWireless NetworkComponent-Based Network ElementsIP Network with QoSUnified NetworkEMS
8Development Plan for KT NGN Management Service Coordination Layer Management: ~ 2006Dynamic and Personalized Service AccessIntegrated Customer PortalOne Stop Service PortalAdvanced Service AdministrationCommon Service ManagerCommon Network Resource ManagerEasy Communication of ProfilesShared Information BaseNetwork Layer Management: ~ 2005For the Management of New NGN ComponentsSoftSwitch Management System(SSEMS)NGN-NMSWe have an active development plan for KT NGN Management in both Service Coordination Layer and Network Layer.Our study will be focused more on Service Coordination Layer Management. This is an emerging area to be settled down because of inexperience in the field. Basically, we categorized this layer into three functional groups for our convenience.They are Service Access for dynamic and personalized service with Integrated Customer Portal and One Stop Service Portal, and Advanced Service Administration with Common Service Manager, Common Network Resource Manager.To make easy communication between Service Access group and Service Administration group, we will build a Shared Information base for the profiles of services and subscribers.To support all these functions, we will develop two management systems in Network Layer. They are SSEMS and NGN-NMS.We will develop management systems for network layer first. It’s because we have more experience in Network Layer than Service Coordination Layer.
9Service Coordination Layer Management(1) Shared InformationIntegrated Customer PortalUser Profiles& SecurityUnifiedDirectoryOperationalDataCommonData ModelBSSOne Stop Service PortalServicesProfilesCommon Communication Bus (Java, CORBA, LDAP, SOAP/XML, SQL)Common Service Manager (QOS, Security, Resource)PolicyManagerSecurityManagerParlayFrameworkCommon Network Resource ManagerYou can see the logical management architecture of Service Coordination Layer.I mentioned just before we have two portals deal with customer and service related date processing.And shared information stores common data related to user and service profiles, operational data and additional information.Common Service Manager handles QoS, Security, and Policy of Service.Common Network Resource Manager controls the resource allocation.ResourceAllocationManagerRoute /TopologyManagerCommon communication Bus(SIP, MGCP, SS7, LDAP, COPS, RADIUS, DIAMETER)GatewaysTerminalsNGNNetwork EquipmentApplication Server
10Service Coordination Layer Management(2) Integrated Customer PortalEnables End Users to Personalize Profiles and Subscribed ServicesActivates Selected ServicesEnables User or Group to Manage Others’ Roles under Security PolicyProvides Single Sign-On Service to Access to Multiple ApplicationsOne Stop Service PortalEnables Service Operator to Announce Available Application ServicesEnables End Users to Purchase Application ServicesLet’s see the details on each functional component a little more.Integrated Customer Portal enables end users to personalize the profiles and subscribed services.It may also activate the selected service,It enables user or group to manage the role of group member under a security policyIt may provide single sign-on service to access to multiple applications.One Stop Service Portal enables service operators to announce available services on the network.And also it enables end users to purchase the services they like.
11Service Coordination Layer Management(3) Common Service ManagerPolicy ManagerAllows Creating, Checking, Storing and Querying Policy RulesSecurity ManagerHandles Overall Security Capabilities for Service Environment.Parlay FrameworkProvides Service Creation and Administration CapabilitiesCommon Network Resource ManagerResource Allocation ManagerProvides Real-Time Activation Capabilities of Network, Application and Server Based on User Behavior, Profile and Quality of ServiceManages Static/Dynamic Assignment of IP AddressesRoute/Topology ManagerDetermines The Most Efficient Route for The Services.These Routes May Be Altered based on Current Network and Service StateCommon Service Manager has three components that consist of Policy Manager, Security Manager, and Parlay Framework.Policy manager allows creating, checking, storing and querying policy rules. It has the same role of policy server in general.Security Manager handles all the security functions for service environment.Parlay Framework provides service creation and administration capabilities.Common Network Resource Manager has two components, Resource Allocation Manager and Route/Topology Manager.Resource Allocation Manager provides real-time activation capabilities of network and service resources with quality of service.And it also manages static/dynamic assignment of IP addresses.Route/Topology Manager determines the most efficient route for the services. These routes may be altered based on current network and service state.
12Network Layer Management(1) Network Level Management SystemsSoftSwitch Operation and Management FunctionsManagement Functions within SoftSwitchFCAPSSystem Management, Operator Administration, EMS Communication FunctionCharging FunctionSSEMS FunctionsManage Several SoftSwitches in A RegionSoftSwitch Management Function: Configuration, Alarm, Performance, StatisticsResource Management of Managed Network Element: AGW, TGW, SGW etc.Subscriber Profile ManagementSystem/Operator AdministrationInterworking function b.w. SSEMS and SoftSwitch or NGN-NMSNGN-NMS FunctionsNational wide NGN Management Function: Network Topology and so onCommunicate to Multiple SSEMSesNetwork Resource Management: AGW, TGW, SGW and so onInterworking Function with Service Management SystemsLet me proceed to Network Level Management Systems from now on.We are developing KT SoftSwitch and its management functions within SoftSwitch.Fault, configuration, account, performance and security functions are currently being developed.And many functions for system management and operator administration are being developed as well.We are also implementing SSEMS. This system manages multiple SoftSwiches and the network configuration data of many gateways in a region.NGN-NMS covers nationwide NGN management function. It communicates to multiple SSEMSes to share and control the managed information.It has the network resource control and management functions for AGW, TGW, SGW, etc.It has kinds of mediation function for interworking with service management systems in northbound of NGN-NMS.
13Network Layer Management(2) Zone 1NGNNMSSSEMSSoftSwitchSoftSwitchAGWAGW-EMSZone 2미디어서버…TGWTGW-EMSSGW-EMSSGWSSEMSYou can see the physical configuration of management systems in Network Layer.In a given management region, we have multiple EMSes like SSEMS, AGW-EMS, TGW-EMS, SGW-EMS and their managed components and one NGN-NMS to manage countrywide KT NGN.Interface b.w. SSEMS and NGN NMS Interface b.w. Gateway and its EMSControl Message b.w. SoftSwitch and Network Element Interface b.w. SoftSwitch and SSEMSInterface b.w. Gateway EMS and NGN NMS
14Initial KT NGN Management: 2004 - 2005 Current RunningManagement SystemsICISTIMS ANSWERS etc.BSOld Management NetworkPurchasingEMSsNGN-NMSSSEMSAGW-EMSTGW-EMSSGW-EMSKT developmentManagement Network for NGNPOTSAGWorANMEGACOxDSLAccess NetworkSIPIP-PhoneThis slide shows you initial KT NGN management architecture.We may reuse the current management systems such as ICIS, TIMS, ANSWERS, BS etc. to handle the subscription, the initial installation for customer access, the fault management in access network and billing related processing.AGW-EMS, TGW-EMS, and SGW-EMS are purchased and properly customized for the management of KT NGN.NGN-NMS and SSEMS are currently being developed to manage KT NGN and SoftSwitchesThe development of NGN-NMS, SSW, and SSEMS will be completed by the end of this year.MEGACOControlNetworkTGWPSTN BearerKT SoftSwitchPSTN InterworkingNo. 7 NetworkSGWSIGTRANApplication ServerMedia Serve, etc.ServersAS, MS …AS, MS …AS, MS …
15Initial KT NGN Management: 2004 - 2005 Initial NGN ManagementAccess DomainOne Stop Management from Subscription to Access Line Installation Using ICIS and TIMSTIMS Covers Access Line InstallationCore Network DomainAutomatic Profile Transfer to SoftSwitches Using ICIS, TIMS, NGN-NMS and SSEMSPartially Regional Management Based on TGW-EMS, SGW-EMSService Coordination LayerServer or Component Based ManagementNo Integrated Management among Servers or ComponentsAt initial NGN management, one stop management form subscription to access line installation with ICIS and TIMS will be possible.TIMS handles access line installation in Access Domain.Subscriber and service profiles will be automatically transferred to SoftSwitches from SSEMS through NGN-NMS.Although many studies are focused on Service Coordination Layer, it is likely to take more time to draw an optimal management solution out for this layer. Server-based, local management will be done at initial phase.
18Closing Why KT Chooses NGN? Enlarging Business AreasMore Business OpportunitiesMulti-Service Converged Network with QoSEasy and Fast Service Creation and DeploymentDynamic and Personalized Service Access Less Investment More Return Cost-Down in Network OperationDevelopment Plan for KT NGN management SystemService Coordination Layer Management: under DesignNetwork Layer Management: under Development Deploy Network Layer Management First Sequentially Integrate Service Coordination Layer Management SystemsNow I’d like to wrap up my presentation.We had a review on “Why KT chooses NGN?”It’s because we wantto enlarge business areasto create more business opportunitiesto construct multi-service converged network with QoSto make service creation and deployment easy and fastto get dynamic and personalized service access.With NGN, we want to invest less for more return and to bring down the cost in network operation and construction.We are currently developing SSEMS and NGN-NMS.We are supposed to complete the development by the end of this year.And we’re also concentrating on our research on the design of Service Coordination Layer Management System now.After we deploy network layer management systems first, we’ll sequentially integrate Service Coordination Layer Management Systems.Thank you for your attention.