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MdOs expose on interface I1 service specification APIs (Customer-to-Business, C2B) that allow business
customers to specify their requirements for a service. The framework also considers MdO service providers,
such as D in Figure 18, which do not own resource domains but operate a multi-domain orchestrator level to
trade resources and services.

Figure 18 – E2E – Multi-Domain Orchestration of different infrastructure
domains belonging to different operators

9.4 Integrated Network Management

Currently, there are two management network systems for managing and control the telecommunication
management. First, ITU-T TMN for fixed network, the second one is 3gpp telecommunication management
for mobile network.
TMN has been developed in many ways over the past 20 years for fixed network. ITU-T developed TMN
architecture to define a framework for the management of telecommunications networks and services in
order to control of the network operations as well as to reduce the OPEX and CAPEX.
Recent growth in technologies of the TMN has created complex and heterogeneous network management
environments. To manage network devices, elements and services, standard management platforms have
been developed using several management protocols such as SNMP and CMIP. However, ITU-T TMN does
not define a framework for managing mobile network.

3rd generation partnership project (3GPP) defined requirements of telecommunication management for LTE,
3G and 2G by re-using existing relevant standards such as ITU-T and TMF etc.

With current TMN standard for fixed network and mobile network management technology, it is difficult to
build up unified network management system. Based on this understanding it is proposed a new network
management framework for IMT-2020.

A standardized network management system for IMT-2020 should operate as an open network management
protocol for fixed and mobile network, as shown in Figure 19.

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