2Outline Introduction of Next Generation Network Introduction of Application ServerSome Ideas about My Research
3Next Generation Network BackgroundArchitecture of Next Generation NetworkCharacter of Next Generation NetworkSoftswitch
4Next Generation Network BackgroundThe trend of various heterogeneous networks amalgamation (Internet, PSTN and Others)Service drive that requires to provide voice, data and multimedia services in one public network
6Next Generation Network Access layerProvide the way that various networks and equipments access tocore backbone network, including signal gateway, media gateway,access gateway and othersTransport LayerProvide the channels for various signals and media transport.The core network of NGN is IP network.
7Next Generation Network Control LayerProvide capabilities of call control, connection control, protocolhandling and others. Provide the open interface for service layer toaccess to network resource in the low layer. The core part of the layeris SoftSwitchService LayerProvide various services for users, mainly including Service SupportEnvironment (Service Creation Environment, Application Server andService Management Server) , AAA Server and Network ManagerServer.
8Next Generation Network CharacterOpen and layered ArchitectureOpen Interface and protocol between layersThe division between service and call control, between call control and load
9Next Generation Network SoftSwtichSoftSwitch is the core of Next Generation Network. It isindependent of Transport Layer. It provide the openinterface for service layer to access to network resourcein the low layer. Main functions are included:Call controlResource distributionProtocol handlingRouting, Authentication and Charging
10Application Server Service Support Environment 2017/4/1Application ServerService Support EnvironmentApplication Server typesApplication Server Functions
11Application Server Service Support Environment 2017/4/1Application ServerService Support EnvironmentService Support Environment is the core part of Service Layer, It includesSCE (Service Creation Environment), AS (Application Server) and SMS(Service Management Server).AS is main body of Service Support Environment. SCE and SMS are alsoas parts of AS. AS provides the environment that services are created,remained, executed and managed. It also provides the developmentplatform for Third-Party.
12Application Server Application Server types 2017/4/1Application ServerApplication Server typesThe interface between SoftSwitch and Application Server mainly includesSIP protocol (IETF) and Parlay standard (Parlay Organization). So it couldbe sorted to AS based on Parlay API and AS based on SIP APIAS based on JAIN (Integrated Network APIs for the Java Platform) shouldalso be concerned
13Application Server Application Server Functions 2017/4/1Application ServerApplication Server FunctionsProvide the environment of service remainand executionIt mainly includes service performance monitor, resource monitor ,system log, service log, load control and balance, fault handlingService life cycle managementIt mainly includes service load, active, inactive and remove.
14Application Server Support third-party service remain, execution and managementIntegrate Web server into AS and provide servicebased on WebService Character Interaction avoidance, detectionand solution
15Application Server Provide different levels development Interfaces to third partySuch as Parlay API, SIP GUI API, SIP Servlet API, CPL, Voice XMLand others
16Some IdeasPlan 1Research is focused on Application Server itself. The followingproblems need to be concerned:Service Creation EnvironmentService Logic simulation test and collision detectionService dynamic load and dynamic updateService remain and execution environmentService Character interaction avoidance, detection and solutionIntegrate with Web ServerProvide different levels API to support Third-party developmentmore
17Some IdeasPlan 2Research is focused on the association between Application Serverand other components. For example, between Application Server andSoftBridge.Integrate SoftBridge into Service Support EnvironmentThe interface between Application Server and SoftSwitch (SIP, Parlay API), JAIN APINeed more research