TY  - JOUR
AU  - Mebarkia, Khalil
AU  - Zsóka, Zoltán
TI  - QoS impacts of slice traffic limitation
JF  - INFOCOMMUNICATIONS JOURNAL
J2  - INFOCOMM J
VL  - 13
PY  - 2021
IS  - 3
SP  - 24
EP  - 32
PG  - 9
SN  - 2061-2079
DO  - 10.36244/ICJ.2021.3.3
UR  - https://m2.mtmt.hu/api/publication/32542884
ID  - 32542884
AB  - 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.
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Zsóka, Zoltán
AU  - Mebarkia, Khalil
ED  - IEEE, ,
TI  - Slice-aware Service Chaining
T2  - 2021 24th Conference on Innovation in Clouds, Internet and Networks and Workshops (ICIN)
PB  - IEEE
CY  - Piscataway (NJ)
SN  - 9781728177052
T3  - International Conference on Intelligence in Next Generation Networks, ISSN 2162-3414
PY  - 2021
SP  - 6
EP  - 12
PG  - 7
DO  - 10.1109/ICIN51074.2021.9385550
UR  - https://m2.mtmt.hu/api/publication/31961307
ID  - 31961307
AB  - 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.
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Mebarkia, Khalil
AU  - Zsóka, Zoltán
ED  - Alexandros-Apostolos, A. Boulogeorgos
TI  - Analysis of Network's QoS in Service Chains
T2  - 2020 International Symposium on Performance Evaluation of Computer and Telecommunication Systems, SPECTS
PB  - IEEE
CY  - Piscataway (NJ)
SN  - 156555373X
PY  - 2020
PG  - 9
SN  - 9781565553736
UR  - https://m2.mtmt.hu/api/publication/31818851
ID  - 31818851
N1  - Conference code: 163420            
            Export Date: 19 January 2021
AB  - 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.
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Zsóka, Zoltán
AU  - Mebarkia, Khalil
ED  - Galis, A
ED  - Guillemin, F
ED  - Noldus, R
ED  - Secci, S
ED  - Idzikowski, F
ED  - Sayit, MF
TI  - Layered Solutions for Dynamic Service Chaining
T2  - 2019 22nd Conference on Innovation in Clouds, Internet and Networks and Workshops (ICIN)
PB  - IEEE Press
CY  - New York, New York
SN  - 9781538683361
PY  - 2019
SP  - 292
EP  - 296
PG  - 5
DO  - 10.1109/ICIN.2019.8685899
UR  - https://m2.mtmt.hu/api/publication/30877067
ID  - 30877067
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Mebarkia, Khalil
AU  - Zsóka, Zoltán
TI  - Service traffic engineering: Avoiding link overloads in service chains
JF  - JOURNAL OF COMMUNICATIONS AND NETWORKS
J2  - J COMMUN NETW-S KOR
VL  - 21
PY  - 2019
IS  - 1
SP  - 69
EP  - 80
PG  - 12
SN  - 1229-2370
DO  - 10.1109/JCN.2019.000007
UR  - https://m2.mtmt.hu/api/publication/30705359
ID  - 30705359
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Mebarkia, Khalil
AU  - Zsóka, Zoltán
TI  - QoS Modeling and Analysis in 5G Backhaul Networks
T2  - 2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
PB  - IEEE
CY  - Piscataway (NJ)
SN  - 9781538660096
PY  - 2018
SP  - 290
EP  - 295
PG  - 6
DO  - 10.1109/PIMRC.2018.8580739
UR  - https://m2.mtmt.hu/api/publication/30705367
ID  - 30705367
AB  - 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.
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Farkas, Balázs András
AU  - Zsóka, Zoltán
TI  - Augmenting SDN by a multi-layer network model
T2  - 2016 EUROPEAN CONFERENCE ON NETWORKS AND COMMUNICATIONS (EUCNC)
PB  - IEEE
CY  - New York, New York
SN  - 9781509028931
PY  - 2016
SP  - 215
EP  - 219
PG  - 5
DO  - 10.1109/EuCNC.2016.7561035
UR  - https://m2.mtmt.hu/api/publication/3126398
ID  - 3126398
LA  - English
DB  - MTMT
ER  - 

TY  - CONF
AU  - Zsóka, Zoltán
AU  - Izsó, Tamás
AU  - Bajor, Péter
AU  - Babics, Emil
ED  - Jacek, Rak
TI  - Augmenting optical topology to improve survivability
T2  - RNDM2011 - 3rd International Workshop on Reliable Networks Design and Modeling
PY  - 2011
SP  - 17
EP  - 23
PG  - 7
UR  - https://m2.mtmt.hu/api/publication/2668686
ID  - 2668686
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Farkas, Balázs András
AU  - Zsóka, Zoltán
ED  - Rak, Jacek
ED  - Jaumard, Brigitte
ED  - Wessäly, Roland
TI  - Dynamic grooming, is it really dynamic?
T2  - 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)
PB  - IEEE Press
CY  - New York, New York
SN  - 9781457706820
PY  - 2011
PG  - 8
UR  - https://m2.mtmt.hu/api/publication/2668685
ID  - 2668685
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Zsóka, Zoltán
AU  - Jereb, László Tibor
AU  - Izsó, Tamás
AU  - Unghváry, F
ED  - IEEE, null
TI  - FLEXPLANET, a Flexible Multi-Layer Network Design Tool
T2  - Networks 2008 : The 13th International Telecommunications Network Strategy and Planning Symposium
PB  - Híradástechnikai Tudományos Egyesület
CY  - Budapest
SN  - 9789638111685
PY  - 2008
SP  - 1
EP  - 7
PG  - 7
DO  - 10.1109/NETWKS.2008.4763685
UR  - https://m2.mtmt.hu/api/publication/2628769
ID  - 2628769
LA  - English
DB  - MTMT
ER  -