Abstract
We present a self-configured and unified access and metro network architecture, named ARMONIA. The ARMONIA network monitors its status, and dynamically (re-)optimizes its configuration. ARMONIA leverages software defined networking (SDN) and network functions virtualization (NFV) technologies. These technologies enable the access and metro convergence and the joint and efficient control of the optical and the IP equipment used in these different network segments. Network monitoring information is collected and analyzed utilizing machine learning and big data analytics methods. Dynamic algorithms then decide how to adapt and dynamically optimize the unified network. The ARMONIA network enables unprecedented resource efficiency and provides advanced virtualization services, reducing the capital expenditures (CAPEX) and operating expenses (OPEX) and lowering the barriers for the introduction of new services. We demonstrate the benefits of the ARMONIA network in the context of dynamic resource provisioning of network slices. We observe significant spectrum and equipment savings when compared to static overprovisioning.
Highlights
Internet traffic is expected to grow steadily at a rate of about 25% per year by 2022 [1]
We described the architecture of the ARMONIA network and its vision the central office (CO) and the provider’s metro network, as well as the optical fibers of the regarding the unified operation of the access and the metro segments
ARMONIA leverages Passive optical networks (PONs) networks based on optical line terminal (OLT) devices that support either the network configuration (NETCONF) protocol or can be controlled through a dedicated access network controller that exposes the appropriate northbound interfaces
Summary
Internet traffic is expected to grow steadily at a rate of about 25% per year by 2022 [1]. Sci. 2020, 10, 8318 its quality of transmission (QoT) decreases for a number of reasons: ageing of equipment, increased interference due to new connections, equipment degradation/failures, etc To this end, optical paths are installed with unfavorable network conditions (“high margins”) in order to operate statically and safely for many years during which real conditions will deteriorate [3]. Through SDN and NFV technologies, the different parts of the network (mobile, access, metropolitan) are integrated and jointly operated. This multiplies the benefits of the dynamic operation of each individual segment. The optical and IP equipment of the metropolitan and access networks are jointly controlled through a closed control loop operation, utilizing SDN and NFV technologies (Figure 1).
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