@article{MTMT:33780195,
	title = {Closed-loop Orchestration for Cloud-native Mobile IPv6},
	url = {https://m2.mtmt.hu/api/publication/33780195},
	author = {Leiter, Ákos and Lami, Edina and Hegyi, Attila and Varga, József and Bokor, László},
	doi = {10.36244/ICJ.2023.1.5},
	journal-iso = {INFOCOMM J},
	journal = {INFOCOMMUNICATIONS JOURNAL},
	volume = {15},
	unique-id = {33780195},
	issn = {2061-2079},
	abstract = {With the advent of Network Function Virtualization (NFV) and Software-Defined Networking (SDN), every network service type faces significant challenges induced by novel requirements. Mobile IPv6, the well-known IETF standard for network-level mobility management, is not an exemption. Cloud-native Mobile IPv6 has acquired several new capabilities due to the technological advancements of NFV/SDN evolution. This paper presents how automatic failover and scaling can be envisioned in the context of cloud-native Mobile IPv6 with closed-loop orchestration on the top of the Open Network Automation Platform. Numerical results are also presented to indicate the usefulness of the new operational features (failover, scaling) driven by the cloud-native approach and highlight the advantages of network automation in virtualized and softwarized environments.},
	year = {2023},
	eissn = {2061-2125},
	pages = {44-54},
	orcid-numbers = {Leiter, Ákos/0000-0003-1323-6541; Bokor, László/0000-0003-1870-8544}
}

@misc{MTMT:33283011,
	title = {Availability and Latency Aware Link Design Algorithm for Fixed Wireless Access},
	url = {https://m2.mtmt.hu/api/publication/33283011},
	author = {Varga, József and Hilt, Attila and Zsolt, Szabó and Járó, Gábor},
	unique-id = {33283011},
	year = {2022},
	pages = {1-14},
	orcid-numbers = {Hilt, Attila/0000-0002-3407-1443}
}

@inproceedings{MTMT:32887938,
	title = {Availability-Aware E-band Wireless Extension of Fiber-Access},
	url = {https://m2.mtmt.hu/api/publication/32887938},
	author = {Hilt, Attila and Varga, József and Járó, Gábor},
	booktitle = {NOMS 2022-2022 IEEE/IFIP Network Operations and Management Symposium},
	doi = {10.1109/NOMS54207.2022.9789802},
	unique-id = {32887938},
	abstract = {The paper discusses availability of Gigabit/s (Gbps) fiber-optical access that are extended with E-band millimeter-wave (mmW) radio. Calculation method is shown for fixed fiber-wireless system, in which ‘fiber-like’ SLA (Service Level Agreement) has to be achieved. As shown, in ITU rainzone "K" Gbps throughputs can be achieved with mmW radios. Naturally, shorter radio links provide higher fade margins and better availability. However, as it is shown with a simple example, better system level availability may be achieved by connecting the radio to a FTTRN (Fiber to the Radio Node) where the fiber sections are protected or part of a loop. In practice, satisfying the availability target may require selecting a longer wireless link and not the shortest hop in an urban network environment.},
	year = {2022},
	orcid-numbers = {Hilt, Attila/0000-0002-3407-1443}
}

@CONFERENCE{MTMT:32501855,
	title = {Cost saving by automation in 5G},
	url = {https://m2.mtmt.hu/api/publication/32501855},
	author = {Varga, József},
	booktitle = {23. HTE Infokom konferencia, 2021},
	unique-id = {32501855},
	year = {2021},
	pages = {1}
}

@inproceedings{MTMT:31328430,
	title = {Capacity Expansion and Modernization of Core Network Elements Running on ATCA Platform},
	url = {https://m2.mtmt.hu/api/publication/31328430},
	author = {Hilt, Attila and Varga, József and Járó, Gábor},
	booktitle = {NOMS 2020 - 2020 IEEE/IFIP Network Operations and Management Symposium: Management in the Age of Softwarization and Artificial Intelligence},
	doi = {10.1109/NOMS47738.2020.9110475},
	unique-id = {31328430},
	year = {2020},
	pages = {1-5},
	orcid-numbers = {Hilt, Attila/0000-0002-3407-1443}
}

@inproceedings{MTMT:31964988,
	title = {Telco Cloud Simulator},
	url = {https://m2.mtmt.hu/api/publication/31964988},
	author = {Hegyi, Péter and Varga, József},
	booktitle = {2019 IEEE 24th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)},
	doi = {10.1109/CAMAD.2019.8858483},
	unique-id = {31964988},
	year = {2019},
	pages = {1-7},
	orcid-numbers = {Hegyi, Péter/0000-0003-2384-8576}
}

@inproceedings{MTMT:30876013,
	title = {Ultra-reliable low latency services: 5G architecture and operational alternatives with cost analysis},
	url = {https://m2.mtmt.hu/api/publication/30876013},
	author = {Kiess, Wolfgang and Lang, Ekkehard and Hoffmann, Klaus and Morper, Hans-Jochen and Varga, József},
	booktitle = {2019 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC)},
	doi = {10.1109/WCNC.2019.8885604},
	unique-id = {30876013},
	year = {2019},
	pages = {2019-2027}
}

@inproceedings{MTMT:30757171,
	title = {Evolution towards Telco-Cloud: Reflections on Dimensioning, Availability and Operability : (Invited Paper)},
	url = {https://m2.mtmt.hu/api/publication/30757171},
	author = {Járó, Gábor and Hilt, Attila and Nagy, Lorand and Tündik, Máté Ákos and Varga, József},
	booktitle = {2019 42nd International Conference on Telecommunications and Signal Processing (TSP)},
	doi = {10.1109/TSP.2019.8768807},
	unique-id = {30757171},
	abstract = {There are multiple drivers of moving away from physical implementation of telecommunication network elements towards software (SW) only deployments in all IP networks. One of the major motivations is the possibility to use commercial IT hardware as platform, due to cost efficiency and the common required experience for hardware (HW) operation and maintenance. The growing demand for decoupling HW and application SW requires an increasing utilization of virtualization. On top of IT-grade HW, the virtualized network functions can be deployed to the cloud. However, to fulfill the strict requirements of telecommunication networks on cloud, there are special configurations and best practices that shall be followed. These led to the notion of 'Telco-Cloud'. The rapidly increasing amount of cloud-based Virtual Network Functions introduced new concepts for dimensioning, deployment, operation, management, licensing, and monitoring. Several established availability and operability requirements and expectations are inherited also from the legacy world of Physical Network Functions, meanwhile the telecommunication world itself undergoes a continuous change towards the new worlds of Telco-Cloud and 5G. This paper gives an overview of the transition to Telco-Cloud, basic dimensioning and availability design concepts and some operability challenges are discussed. Finally, a few examples are shown from research and development, as well as feedback from real operator networks.},
	year = {2019},
	pages = {1-8},
	orcid-numbers = {Hilt, Attila/0000-0002-3407-1443; Tündik, Máté Ákos/0000-0003-2085-0136}
}

@article{MTMT:30550381,
	title = {Reducing operational costs of ultra-reliable low latency services in 5G},
	url = {https://m2.mtmt.hu/api/publication/30550381},
	author = {Varga, József and Hilt, Attila and József, Bíró and Rotter, Csaba and Járó, Gábor},
	doi = {10.36244/ICJ.2018.4.6},
	journal-iso = {INFOCOMM J},
	journal = {INFOCOMMUNICATIONS JOURNAL},
	volume = {10},
	unique-id = {30550381},
	issn = {2061-2079},
	abstract = {Ultra-reliable low latency (uRLL) communication in 5G dictates the deployment of distributed infrastructure with numerous datacenters for low latency, while hosting ultra-reliable services mandates attended datacenters. This would boost the operational costs of 5G network operators planning country-wide coverage for uRLL services. This paper examines how these operational expenses dominated by administrative costs can be reduced without impacting the quality of the provided uRLL service. Our results indicate that hosting uRLL services in unattended datacenters with increased hardware redundancy schemes can produce significant cost savings.},
	year = {2018},
	eissn = {2061-2125},
	pages = {37-45},
	orcid-numbers = {Hilt, Attila/0000-0002-3407-1443; Rotter, Csaba/0000-0001-5527-1674}
}

@inproceedings{MTMT:3397849,
	title = {Providing Ultra-Reliable Low Latency Services for 5G with Unattended Datacenters},
	url = {https://m2.mtmt.hu/api/publication/3397849},
	author = {Varga, József and Hilt, Attila and Rotter, Csaba and Járó, Gábor},
	booktitle = {11th IEEE International Symposium on Communication Systems, Networks, and Digital Signal Processing},
	doi = {10.1109/CSNDSP.2018.8471756},
	unique-id = {3397849},
	year = {2018},
	pages = {1-4},
	orcid-numbers = {Hilt, Attila/0000-0002-3407-1443; Rotter, Csaba/0000-0001-5527-1674}
}