Revisiting VoIP QoE assessment methods: are they suitable for VoLTE?

Sánchez-Iborra, Ramón; Cano, Maria‐Dolores; García-Haro, Joan

doi:10.5296/npa.v8i2.9123

Cited by 5 publications

(2 citation statements)

References 27 publications

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“…The comparison with the other related works show that our proposal is the only one that introduces AI and SDN to modify OSPF protocol. With these modifications, we achieve real time improvements and adaptive routing, which is currently needed to provide realtime services [256] [276].…”

Section: Discussionmentioning

confidence: 99%

Dynamic metric OSPF-based routing protocol for Software Defined Networks

et al. 2018

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Routing protocols are needed in networking to find the optimal path to reach the destination. However, networks are changing both their use finality and their technology. Paradigms like Software Defined Networks (SDNs) introduce the possibility and the necessity to improve the routing protocols. In this paper, a modification of the Open Shortest Path First (OSPF) routing protocol is proposed in order to allow the protocol to change the metric calculation dynamically according to the network requirements. Experiments, which compare our proposal against the OSPF protocol, are performed in five different scenarios. In these scenarios, the performance of the multimedia traffic has been increased 33% in terms of bandwidth utilization, 80% of loss rate reduction and delay reduction on VoIP communications.

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Section: Discussionmentioning

confidence: 99%

Dynamic metric OSPF-based routing protocol for Software Defined Networks

et al. 2018

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“…The comparison with the other related works shows that our proposal is the only one that introduces AI and SDN to modify OSPF protocol. With these modifications, we achieve real time improvements and adaptive routing, which is currently needed to provide real-time services (see [168] and [169]).…”

Section: Discussionmentioning

confidence: 99%

Intelligent multimedia flow transmission through heterogeneous networks using cognitive software defined networks

Máñez¹

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This thesis addresses the problem of routing in Software Defined Networks (SDN). Specifically, the problem of designing a routing protocol based on Artificial Intelligence (AI) for ensuring Quality of Service (QoS) in multimedia transmissions. In the first part of the work, SDN is introduced. Its architecture, protocols and advantages are discussed. Then, the state of the art is presented, where several works regarding QoS, routing, SDN and AI are detailed. In the next chapter, the SDN controller, which plays the central role in the proposed architecture, is presented. The design of the controller is detailed and its performance compared to another common controller. Later, the routing proposals are described. First, a modification of a traditional routing protocol is discussed. This modification intends to adapt a traditional routing protocol to SDN, focused on multimedia transmissions. Then, the final proposal is described. Its messages, architecture and algorithms are depicted. As regards AI, chapter 5 details the module of the architecture that implements it, along with all the intelligent methods used in the routing proposal. Furthermore, the intelligent route decision algorithm is described and the final proposal is compared to the traditional routing protocol and its adaptation to SDN, showing an increment of the end quality of the transmission. Finally, some applications based on the routing proposal are described. The applications are presented to demonstrate that the proposed solution can work with heterogeneous networks.

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