2020
Ariel Galante Dalla-Costa, Lucas Bondan, Juliano Araujo Wickboldt, Cristiano Bonato Both, Lisandro Zambenedetti Granville
Orchestra: A Customizable Split-Aware NFV Orchestrator for Dynamic C-RAN Journal Article
In: IEEE Journal on Selected Areas in Communications, 38 (6), pp. 1014–1024, 2020, ISSN: 0733-8716.
Abstract Links BibTeX Tags: 5G Cloud Computing Cloud Radio Access Networks (C-RAN) Network Functions Virtualization (NFV) Network Orchestration Wireless Networks
@article{journals/jsac/DallaCosta20,
title = {Orchestra: A Customizable Split-Aware NFV Orchestrator for Dynamic C-RAN},
author = {Ariel Galante Dalla-Costa and Lucas Bondan and Juliano Araujo Wickboldt and Cristiano Bonato Both and Lisandro Zambenedetti Granville},
url = {https://ieeexplore.ieee.org/document/9060959},
doi = {10.1109/JSAC.2020.2986689},
issn = {0733-8716},
year = {2020},
date = {2020-04-08},
journal = {IEEE Journal on Selected Areas in Communications},
volume = {38},
number = {6},
pages = {1014--1024},
abstract = {Dynamic Cloud Radio Access Networks (C-RAN) is an emerging wireless architecture that splits radio functions in a hierarchical cloud-based infrastructure. In Dynamic C-RAN, wireless functionalities can be divided into smaller components and distributed along with a hierarchical cloud infrastructure. Network Functions Virtualization (NFV) concepts have been recently investigated to facilitate managementrelated operations of these wireless functionalities. Despite the advances in providing flexible NFV orchestration for Virtualized Network Functions (VNF)s, there is still a lack of solutions aware of VNFs internal composition, a key characteristic of split virtualized radio functions. In this article, we advance NFV orchestration in a Dynamic C-RAN scenario presenting Orchestra, a split-aware NFVO for Dynamic C-RAN with support to customizable orchestration algorithms for different radio function splits. Orchestra is validated through instantiates and migrates VNFCs following the decisions of personalized orchestration algorithms, with a petty impact in the VNFC’s deployment and migration time.},
keywords = {5G, Cloud Computing, Cloud Radio Access Networks (C-RAN), Network Functions Virtualization (NFV), Network Orchestration, Wireless Networks},
pubstate = {published},
tppubtype = {article}
}
2019
Maicon Kist, Juliano Araujo Wickboldt, Lisandro Zambenedetti Granville, Juergen Rochol, Luiz A DaSilva, Cristiano Bonato Both
Flexible fine-grained baseband processing with network functions virtualization: Benefits and impacts Journal Article
In: Elsevier Computer Networks, 151 , pp. 158–165, 2019, ISSN: 1389-1286.
Abstract Links BibTeX Tags: 5G Cloud Radio Access Networks (C-RAN) Network Functions Virtualization (NFV) Software-Defined Radio (SDR) Wireless Networks
@article{journal/cn/Kist19,
title = {Flexible fine-grained baseband processing with network functions virtualization: Benefits and impacts},
author = {Maicon Kist and Juliano Araujo Wickboldt and Lisandro Zambenedetti Granville and Juergen Rochol and Luiz A DaSilva and Cristiano Bonato Both},
url = {http://www.sciencedirect.com/science/article/pii/S1389128619301033},
doi = {10.1016/j.comnet.2019.01.021},
issn = {1389-1286},
year = {2019},
date = {2019-01-01},
journal = {Elsevier Computer Networks},
volume = {151},
pages = {158--165},
abstract = {The increasing demand for wireless broadband connectivity is leading mobile network operators towards new means to expand their infrastructures efficiently and without increasing the cost of operation. Network Functions Virtualization (NFV) is a step towards virtualization-based, low-cost flexible and adaptable networking services. In the context of centralized baseband architectures, virtualization is already employed to run baseband processing units as software on top of conventional data center hardware. However, current virtualization solutions consider atomic virtualization, i.e., single virtual machines implementing all baseband functionalities. In this article, we propose the fine-grained virtualization of baseband processing to achieve a more flexible distribution of the processing workload in centralized architectures. We also evaluate the benefits of our approach in terms of: (i) The bandwidth requirements for each fine-grained distribution option, (ii) the latency experienced by mobile users for each fine-grained distribution option, and (iii) the total CPU usage of each fine-grained baseband processing function.},
keywords = {5G, Cloud Radio Access Networks (C-RAN), Network Functions Virtualization (NFV), Software-Defined Radio (SDR), Wireless Networks},
pubstate = {published},
tppubtype = {article}
}
2018
Marcelo Antonio Marotta, Leonardo Roveda Faganello, Maicon Kist, Lucas Bondan, Juliano Araujo Wickboldt, Lisandro Zambenedetti Granville, Juergen Rochol, Cristiano Bonato Both
Integrating dynamic spectrum access and device-to-device via cloud radio access networks and cognitive radio Journal Article
In: Wiley International Journal of Communication Systems, 31 (11), pp. 1–11, 2018, ISSN: 1099-1131.
Abstract Links BibTeX Tags: Cloud Radio Access Networks (C-RAN) Cognitive Radio Device-to-Device (D2D) Dynamic Spectrum Access
@article{DBLP:journals/ijcomsys/MarottaFKBWGRB18,
title = {Integrating dynamic spectrum access and device-to-device via cloud radio access networks and cognitive radio},
author = {Marcelo Antonio Marotta and Leonardo Roveda Faganello and Maicon Kist and Lucas Bondan and Juliano Araujo Wickboldt and Lisandro Zambenedetti Granville and Juergen Rochol and Cristiano Bonato Both},
url = {https://doi.org/10.1002/dac.3698},
doi = {10.1002/dac.3698},
issn = {1099-1131},
year = {2018},
date = {2018-01-01},
journal = {Wiley International Journal of Communication Systems},
volume = {31},
number = {11},
pages = {1--11},
abstract = {Dynamic Spectrum Access (DSA) can be integrated with Device‐to‐Device (D2D) communications to enable the exploitation of unused spectrum portions and to address the spectrum scarcity problem. Spectrum management mechanisms integrated into DSA and D2D allow low‐power communications between User Equipments without interfering with licensed primary users. However, these mechanisms tend to be energy and processing intensive, being unfeasible to implement in User Equipments with strict battery and processing limitations. On the other hand, Cloud Radio Access Networks already leverage the virtually unlimited computing capacity of clouds for baseband processing functions. Thus, in this article, we propose the Cognitive Radio Device‐to‐Device (CRD2D) approach aiming to offload spectrum management functionality to the cloud taking advantage of Cloud Radio Access Networks architecture to support the integration of DSA and D2D.},
keywords = {Cloud Radio Access Networks (C-RAN), Cognitive Radio, Device-to-Device (D2D), Dynamic Spectrum Access},
pubstate = {published},
tppubtype = {article}
}
2017
Marcelo Antonio Marotta, Maicon Kist, Juliano Araujo Wickboldt, Lisandro Zambenedetti Granville, Juergen Rochol, Cristiano Bonato Both
Design considerations for software-defined wireless networking in heterogeneous cloud radio access networks Journal Article
In: Springer Journal of Internet Services and Applications, 8 (1), pp. 1–18, 2017, ISSN: 1867-4828.
Abstract Links BibTeX Tags: 5G Cloud Radio Access Networks (C-RAN) Software-Defined Networking (SDN) Software-Defined Radio (SDR)
@article{DBLP:journals/jisa/MarottaKWGRB17,
title = {Design considerations for software-defined wireless networking in heterogeneous cloud radio access networks},
author = {Marcelo Antonio Marotta and Maicon Kist and Juliano Araujo Wickboldt and Lisandro Zambenedetti Granville and Juergen Rochol and Cristiano Bonato Both},
url = {https://doi.org/10.1186/s13174-017-0068-x},
doi = {10.1186/s13174-017-0068-x},
issn = {1867-4828},
year = {2017},
date = {2017-01-01},
journal = {Springer Journal of Internet Services and Applications},
volume = {8},
number = {1},
pages = {1--18},
abstract = {The fifth generation (5G) cellular infrastructure is envisaged as a dense and heterogeneous deployment of small cells overlapping with existing macrocells in the Radio Access Network (RAN). Densification and heterogeneity, however, pose new challenges such as dealing with interference, accommodating massive signaling traffic, and managing increased energy consumption. Heterogeneous Cloud Radio Access Networks (H-CRAN) emerges as a candidate architecture for a sustainable deployment of 5G. In addition, the application of SDN concepts to wireless environments motivated recent research in the so-called Software-Defined Wireless Networking (SDWN). In this article, we discuss how SDWN can support the development of a flexible, programmable, and sustainable infrastructure for 5G. We also present a case study based on SDWN to perform frequency assignment, interference, and handover control in an H-CRAN environment. Results allow the establishment of a tradeoff between wireless communication capacity gains and signaling overhead added by the employment of SDWN concepts to H-CRAN.},
keywords = {5G, Cloud Radio Access Networks (C-RAN), Software-Defined Networking (SDN), Software-Defined Radio (SDR)},
pubstate = {published},
tppubtype = {article}
}
Ariel Galante Dalla-Costa, Lucas Bondan, Juliano Araujo Wickboldt, Cristiano Bonato Both, Lisandro Zambenedetti Granville
Maestro: An NFV Orchestrator for Wireless Environments Aware of VNF Internal Compositions Inproceedings
In: 31st IEEE International Conference on Advanced Information Networking and Applications, AINA 2017, Taipei, Taiwan, March 27-29, 2017, pp. 484–491, IEEE Computer Society, 2017, ISSN: 1550-445X.
Abstract Links BibTeX Tags: 5G Cloud Radio Access Networks (C-RAN) Network Functions Virtualization (NFV) Network Orchestration
@inproceedings{DBLP:conf/aina/Dalla-CostaBWBG17,
title = {Maestro: An NFV Orchestrator for Wireless Environments Aware of VNF Internal Compositions},
author = {Ariel Galante Dalla-Costa and Lucas Bondan and Juliano Araujo Wickboldt and Cristiano Bonato Both and Lisandro Zambenedetti Granville},
url = {https://doi.org/10.1109/AINA.2017.126},
doi = {10.1109/AINA.2017.126},
issn = {1550-445X},
year = {2017},
date = {2017-01-01},
booktitle = {31st IEEE International Conference on Advanced Information Networking and Applications, AINA 2017, Taipei, Taiwan, March 27-29, 2017},
pages = {484--491},
publisher = {IEEE Computer Society},
abstract = {Dynamic Cloud Radio Access Network (Dynamic C-RAN) is an emerging wireless architecture that aims for flexibility, business agility, adaptability, among other benefits. In a Dynamic C-RAN, wireless functionalities can be split into smaller components and distributed along a hierarchical cloud infrastructure. Network Functions Virtualization (NFV) concepts have been recently investigated to facilitate management-related operations of these wireless functionalities. Despite the many advocated advantages of the function's splitting and the effectiveness of NFV orchestration solutions, both academia and industry are considering Virtualized Network Functions (VNF)s as atomic elements, disregarding the potential advantages of splitting VNFs into several different components. Aiming to improve VNF orchestration in Dynamic C-RAN scenarios, in this paper we propose Maestro: an NFV orchestrator for wireless environments that is able to decide among several possible VNF compositions which are more suitable for each situation. Maestro is designed to operate using different decision mechanisms that can be defined based on network operators' needs. We evaluate the effectiveness of our proposal by modeling the orchestrator's decision mechanism as a linear programming problem. Thus, we show how fronthaul bandwidth consumption can be reduced threefold considering different VNF compositions against atomic VNF placement.},
keywords = {5G, Cloud Radio Access Networks (C-RAN), Network Functions Virtualization (NFV), Network Orchestration},
pubstate = {published},
tppubtype = {inproceedings}
}
Ariel Galante Dalla-Costa, Matias Artur Klafke Schimuneck, Juliano Araujo Wickboldt, Cristiano Bonato Both, Luciano Paschoal Gaspary, Lisandro Zambenedetti Granville
NFV em Redes 5G: Avaliando o Desempenho de Composição de Funções Virtualizadas via Maestro Inproceedings
In: 35º Simpósio Brasileiro de Redes de Computadores e Sistemas Distribuídos, SBRC 2017, Belém, Brazil, May 15-19, 2017, pp. 960–973, SBC, 2017, ISSN: 2177-496X, (In portuguese).
Abstract Links BibTeX Tags: 5G Cloud Radio Access Networks (C-RAN) Network Functions Virtualization (NFV) Network Orchestration
@inproceedings{conf/sbrc/DallaCosta17,
title = {NFV em Redes 5G: Avaliando o Desempenho de Composição de Funções Virtualizadas via Maestro},
author = {Ariel Galante Dalla-Costa and Matias Artur Klafke Schimuneck and Juliano Araujo Wickboldt and Cristiano Bonato Both and Luciano Paschoal Gaspary and Lisandro Zambenedetti Granville},
url = {https://sol.sbc.org.br/index.php/sbrc/article/view/2660},
issn = {2177-496X},
year = {2017},
date = {2017-01-01},
booktitle = {35º Simpósio Brasileiro de Redes de Computadores e Sistemas Distribuídos, SBRC 2017, Belém, Brazil, May 15-19, 2017},
pages = {960--973},
publisher = {SBC},
abstract = {Dynamic Cloud Radio Access Network (Dynamic C-RAN) is an architecture wireless that aims benefits such as flexibility and agility to new five generation (5G) network. In Dynamic C-RAN, the radio functions processing is distributed along of a hierarchical of clouds. Network Functions Virtualization has been investigated the facilities to employ this wireless functions. NFV offers orchestration of split of radio functions into Virtualized Network Functions (VNF). The orchestrator needs to consider strict requirements of C-RAN between distributed components of VNF to get real earnings. In this work, we propose a detailed evaluation of Maestro - an NFV orchestrator for wireless environments aware VNF composition. We evaluate Maestro through of linear model programming, considering the effectiveness and orchestration overhead for deciding the best place to VNF components. In addition, we evaluate the trade-off between network data rate and time to generate the placement of components.},
note = {In portuguese},
keywords = {5G, Cloud Radio Access Networks (C-RAN), Network Functions Virtualization (NFV), Network Orchestration},
pubstate = {published},
tppubtype = {inproceedings}
}