ONOS discovers and manages a topology made of Transponders and a dedicated OLS, using standard protocols (NETCONF/RESTCONF) and models (OpenConfig/TAPI). The demo is a joint collaboration, towards production deployment, between 3 operators and 2 equipment vendors.OCIS codes: (060.0060) General; (060.4250) Networks
OverviewThe demo shows the use of ONOS (i.e., Open Network Operating System) controller for the control of a partially disaggregated network. The demo has two phases, first topology discovery and second, point-to-point connectivity setup. The demo scenario, including the optical devices and the Open Line System (OLS) is described in figure 1.
Figure 1, TopologyThe underlying infrastructure comprises two disaggregated white box optical transponders considering a partial disaggregation of transponders and Optical Line System (OLS), but considering the transceivers at both ends belonging to the same vendor. The transponders serve as both input and output of the network. Both Transponder client side ports are connected to a virtual host that is capable of generating and receiving L3 traffic. Providing physical connectivity between the two transponders there is an OLS to which both line-side ports of the controller are connected. TAPI Connectivity requests are going to be issued by the operator's BSS or OSS, the system overarching the whole network deployments.The demo and the ODTN are a collaboration between the Open Networking Foundation (ONF), two of its Service Providers: NTT Communications and Telefonica.
Software Defined Networking (SDN) has attracted tremendous interest in the telecommunication industry due to its ability to abstract, manage and dynamically re-configure endto-end networks from a centralized controller. Though SDN is considered to be a suitable candidate for various use cases in mobile networks, none of the work so far has discussed its advantages and actual realization for Train-to-Wayside Communication System (TWC). In this paper, for the first time, the architecture and use cases of SDN controlled mobile backhauling framework for TWC is proposed. We discuss how our proposed architecture can efficiently handle mobility management and also provide dynamic quality-of-service (QoS) for different services on board. As a first step, a software prototype is developed using industrial standard OpenDayLight SDN controller to have our architecture evaluated. Since the automotive sector is being considered to be an important driver for 5G network, our SDN based mobile backhauling solution can be positioned in 5G where SDN plays an important role.
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