@article{MTMT:32542884,
	title = {QoS impacts of slice traffic limitation},
	url = {https://m2.mtmt.hu/api/publication/32542884},
	author = {Mebarkia, Khalil and Zsóka, Zoltán},
	doi = {10.36244/ICJ.2021.3.3},
	journal-iso = {INFOCOMM J},
	journal = {INFOCOMMUNICATIONS JOURNAL},
	volume = {13},
	unique-id = {32542884},
	issn = {2061-2079},
	abstract = {Slicing is an essential building block of 5G networks and beyond. Different slices mean sets of traffic demands with different requirements, which need to be served over separated or shared network resources. Various service chaining methods applied to support slicing lead to different network load patterns, impacting the QoS experienced by the traffic. In this paper, we analyze QoS properties applying a theoretical model. We also suggest appropriate parameter setting policies in slice-aware service function chaining (SFC) algorithms to increase QoS. We evaluate several metrics in different analysis scenarios to show the advantages of the slice-aware approach.},
	year = {2021},
	eissn = {2061-2125},
	pages = {24-32}
}

@inproceedings{MTMT:31961307,
	title = {Slice-aware Service Chaining},
	url = {https://m2.mtmt.hu/api/publication/31961307},
	author = {Zsóka, Zoltán and Mebarkia, Khalil},
	booktitle = {2021 24th Conference on Innovation in Clouds, Internet and Networks and Workshops (ICIN)},
	doi = {10.1109/ICIN51074.2021.9385550},
	unique-id = {31961307},
	abstract = {Among many other key features, the 5G technology introduced the concept of Network Slicing. It supports that different services or even different operators use the same network resources in a dedicated or shared way. On the other hand, QoS for the traffic is mostly provided on the network resources by weighted or strict scheduling. In this paper, we introduce heuristic service chaining solutions that consider shared slicing and apply a kind of preservation of network resources for other slices to hold the QoS expectations. Our numerical results show the advantages of them from the aspects of loads and overloads of links.},
	year = {2021},
	pages = {6-12}
}

@inproceedings{MTMT:31818851,
	title = {Analysis of Network's QoS in Service Chains},
	url = {https://m2.mtmt.hu/api/publication/31818851},
	isbn = {9781565553736},
	author = {Mebarkia, Khalil and Zsóka, Zoltán},
	booktitle = {2020 International Symposium on Performance Evaluation of Computer and Telecommunication Systems, SPECTS},
	unique-id = {31818851},
	abstract = {New network architectures like 5G adopt new service models where more providers share the infrastructure and offer different network services for users. The slicing concept in 5G networks is important to provide flexible, scalable, and on-demand solutions for the vast array of applications in networks. In this paper, we present a multilayer network model that allows the Service Function Chaining (SFC) with the support of multitenant slices. To analyze the Quality of Service in the slices, we set up a network with few virtual routers over Amazon Web Services (AWS) and use a variety of technologies such as Segment Routing (SR) for implementing Service Chains. We analyze SFC algorithms with different capabilities in avoiding overloads on the network links. The analysis shows the impact of traffic load increase on packet losses and the impact of deploying more slices on the same infrastructure. © 2020 SCS.},
	keywords = {Quality of service; QoS; Telecommunication services; Web services; Network architecture; SFC; NFV; Slicing; 5G mobile communication systems; network services; Service chain; Amazon web services; Multi tenants; Multilayer network models; On-demand solutions; Service functions; Virtual routers},
	year = {2020}
}

@inproceedings{MTMT:30877067,
	title = {Layered Solutions for Dynamic Service Chaining},
	url = {https://m2.mtmt.hu/api/publication/30877067},
	author = {Zsóka, Zoltán and Mebarkia, Khalil},
	booktitle = {2019 22nd Conference on Innovation in Clouds, Internet and Networks and Workshops (ICIN)},
	doi = {10.1109/ICIN.2019.8685899},
	unique-id = {30877067},
	year = {2019},
	pages = {292-296}
}

@article{MTMT:30705359,
	title = {Service traffic engineering: Avoiding link overloads in service chains},
	url = {https://m2.mtmt.hu/api/publication/30705359},
	author = {Mebarkia, Khalil and Zsóka, Zoltán},
	doi = {10.1109/JCN.2019.000007},
	journal-iso = {J COMMUN NETW-S KOR},
	journal = {JOURNAL OF COMMUNICATIONS AND NETWORKS},
	volume = {21},
	unique-id = {30705359},
	issn = {1229-2370},
	year = {2019},
	eissn = {1976-5541},
	pages = {69-80}
}

@inproceedings{MTMT:30705367,
	title = {QoS Modeling and Analysis in 5G Backhaul Networks},
	url = {https://m2.mtmt.hu/api/publication/30705367},
	author = {Mebarkia, Khalil and Zsóka, Zoltán},
	booktitle = {2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)},
	doi = {10.1109/PIMRC.2018.8580739},
	unique-id = {30705367},
	abstract = {Huge efforts are being spent by industry and research institutes for the standardization and preparation of introducing 5G mobile networks that are required to serve user needs. Consequently, a new architecture for different applications is needed for solving the issues related to high data rate, capacity, reliability, and ensuring QoS. In addition, the 5G infrastructures shall provide tailored network solutions specialized to support vertical markets. For such applications, the QoS provided by the network can be critical, thus its analysis is inevitable. This paper presents a model to be applied in QoS analysis and to consider options for the flexibility which shall come with 5G. The model is developed to study the migration of backhaul architecture to 5G, and its effects on the fulfillment of QoS requirements. We performed a case study based on priority-aware queueing analysis, that shows some advantages and issues of this migration.},
	year = {2018},
	pages = {290-295}
}

@inproceedings{MTMT:3126398,
	title = {Augmenting SDN by a multi-layer network model},
	url = {https://m2.mtmt.hu/api/publication/3126398},
	author = {Farkas, Balázs András and Zsóka, Zoltán},
	booktitle = {2016 EUROPEAN CONFERENCE ON NETWORKS AND COMMUNICATIONS (EUCNC)},
	doi = {10.1109/EuCNC.2016.7561035},
	unique-id = {3126398},
	year = {2016},
	pages = {215-219}
}

@CONFERENCE{MTMT:2668686,
	title = {Augmenting optical topology to improve survivability},
	url = {https://m2.mtmt.hu/api/publication/2668686},
	author = {Zsóka, Zoltán and Izsó, Tamás and Bajor, Péter and Babics, Emil},
	booktitle = {RNDM2011 - 3rd International Workshop on Reliable Networks Design and Modeling},
	unique-id = {2668686},
	year = {2011},
	pages = {17-23}
}

@inproceedings{MTMT:2668685,
	title = {Dynamic grooming, is it really dynamic?},
	url = {https://m2.mtmt.hu/api/publication/2668685},
	author = {Farkas, Balázs András and Zsóka, Zoltán},
	booktitle = {3rd International Workshop on Reliable Networks Design and Modeling (RNDM2011) co-located with 3rd international congress on ultra modern telecommunications and control systems and workshops (ICUMT 2011)},
	unique-id = {2668685},
	year = {2011}
}

@inproceedings{MTMT:2628769,
	title = {FLEXPLANET, a Flexible Multi-Layer Network Design Tool},
	url = {https://m2.mtmt.hu/api/publication/2628769},
	author = {Zsóka, Zoltán and Jereb, László Tibor and Izsó, Tamás and Unghváry, F},
	booktitle = {Networks 2008 : The 13th International Telecommunications Network Strategy and Planning Symposium},
	doi = {10.1109/NETWKS.2008.4763685},
	unique-id = {2628769},
	year = {2008},
	pages = {1-7},
	orcid-numbers = {Jereb, László Tibor/0000-0002-1613-4981}
}