IEEE Std 1903.2-2017 pdf download – IEEE Standard for Service Composition Protocols of Next Generation Service Overlay Network
1. Overview 1.1 Scope This standard specifies protocols among service composition (SC) functional entity (FE), service discovery and negotiation (SDN) FE, context information management (CIM) FE, service routing (SR) FE, and service policy decision (SPD) FE to support service composition capabilities in a Next Generation Service Overlay Network (NGSON). The capabilities of service composition aim to support service chaining and instantiation, specification interpretation, service brokering and execution, and context-aware and dynamically adaptive service composition. 1.2 Purpose The purpose of this standard is to enable network operators, service/content providers, and end users to provide and consume composite services based on advanced service composition capability of NGSON with context- aware and dynamically adaptive features. This standard provides interoperability of composite services between network operators and service providers. 2. Normative references The following referenced documents are indispensable for the application of this document (i.e., they must be understood and used, so each referenced document is cited in text and its relationship to this document is explained). For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies. 3GPP TR 22.808, Study on Flexible Mobile Service Steering (FMSS) 1 3GPP TR 22.853, Study on Service Exposure and Enablement Support (SEES) Requirements. 3GPP TR 29.817, Study on eXtensible Markup Language (XML) based access of the Application Function (AF) to the Policy and Charging Rules Function (PCRF), V12.0. 3GPP TS 23.203, Policy and charging control architecture.
4. General introduction NGSON defines the SC FE to support service composition. This FE interacts with other FEs in order to discover concrete services, negotiate with candidate services, get context information, request service routing, and request service invocation. The interactions among different FEs are carried via their reference points defined in NGSON. The following figure illustrates the overall NGSON reference diagram according to IEEE Std 1903-2011, in which the bold boxes and lines are the FEs and interfaces supporting content delivery capabilities. 7 This standard specifies the protocols on each interface among these FEs, including protocol operations, protocol specification, and the relevant procedures. An end-user, NGSON, and service providers interact with the underlying networks (e.g., IMS, NGN, legacy IP networks, P2P overlay networks) for service (or content) delivery and policy enforcement. An end-user requests a service to NGSON and receives the service response from NGSON. The services are provided by service (or content) providers and NGSON authorizes them. NGSON receives a service request from an end-user, and makes service provision and consumption with service compositions by the deployment of context-aware, dynamic adaptation, and self-organizing networking capabilities.