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16th International Conference on Transparent Optical Networks (ICTON)

作者： Vilalta, Ricard Munoz, Raul Casellas, Ramon Martinez, Ricardo CTTC Castelldefels 08860 Spain

ISBN: (纸本)9781479956012

We present the virtualization of multi-domain optical networks considered in the STRAUSS project. Novel resource allocation algorithms for virtual network embedding on Elastic Optical Networks (EON) are proposed. The devised algorithms focus on maximizing the link utilization and reducing the Virtual EONs (VEON) blocking rate. The algorithms have been evaluated in terms of three figures of merit, namely, the blocking rate, the link utilization and the processing time.

关键词： optical network virtualization elastic optical network resource allocation algorithms VEON GMPLS multi-domain resource broker

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On Optimizing resource allocation: A Comparative Review of resource allocation Strategies in HetNets

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CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES 2025年第3期142卷 2211-2245页

作者： Dobruna, Jeta Fazliu, Zana Limani Humar, Iztok Volk, Mojca Univ Ljubljana Fac Elect Engn Lab Telecommun Kongresni Trg 12 Ljubljana 1000 Slovenia Univ Prishtina Fac Elect & Comp Engn Telecommun Dept Str George Bush 31 Prishtina 10000 Kosovo

resource allocation remains a challenging issue in communication networks, and its complexity is continuously increasing with the densification of the networks. With the evolution of new wireless technologies such as Fifth Generation (5G) and Sixth Generation (6G) mobile networks, the service level requirements have become stricter and more heterogeneous depending on the use case. In this paper, we review a large body of literature on various resource allocation schemes that are used in particular in mobile wireless communication networks and compare the proposed schemes in terms of performance indicators as well as techniques used. Our review shows that among the strategies proposed in the literature, there is a wide variety of optimization targets and combinations thereof, focusing mainly on performance indicators such as energy efficiency, spectral efficiency, and network capacity. In addition, in this paper, selected algorithms for resource allocation are numerically analyzed through simulations to compare and highlight the importance of how the resource algorithms are implemented to achieve efficient usage of the available spectrum. The performance of selected algorithms is evaluated in a multi-cell heterogeneous network and compared to proportional fair and eICIC, a widely-used combination of resource allocation and interference mitigation techniques used by communication networks. The results show that one approach may perform better when looking at the individual average user data rate but worse when looking at the overall spectral or energy efficiency, depending on the category of traffic. The results, therefore, confirm that there may not be a single algorithm that visibly outperforms other candidates in terms of all performance criteria. Instead, their efficiency is always a consequence of a strategic choice of goals, and the targeted parameters are optimized at a price. Thus, the development and implementation of resource allocation algorithms must follo

关键词： resource allocation wireless communication heterogeneous networks resource allocation algorithms

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resource allocation and Computation Offloading in Cloud-Assisted Wireless Networks

Resource Allocation and Computation Offloading in Cloud-Assi...

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作者： Younis, Ayman Nasih Salman Rutgers The State University of New Jersey School of Graduate Studies

学位级别：Ph.D., Doctor of Philosophy

The next radio generations of mobile networks, Fifth Generation (5G) and beyond, are expected to speed up the transition from monolithic and inflexible networks to agile and distributed networking elements that rely on "virtualization", "softwarization", openness, intelligent and yet fully interoperable Radio Access Network (RAN) components. At the same time, the increasing popularity of computation-intensive applications on mobile devices has contributed to the overwhelming mobile traffic volume that is pushing against the boundary of the current communication networks' capacity. Besides, mobile platforms are becoming the predominant medium of access to Internet services due to a tremendous increase in their computation and communication capabilities. In light of this, cloud-assisted wireless networks are promising solutions that unite wireless networks and cloud computing to deliver cloud services directly from the network edges. The three emerging paradigms for cloud-assisted wireless networks are: Cloud Radio Access Network (C-RAN), in which the baseband resources are pooled at a Base Band Unit (BBU) based on the fundamentals of centralization and virtualization; Mobile-Edge Computing (MEC), which provides cloud computing and storage capabilities to enable rich services and applications in close proximity to the end-users; and Next Generation RAN (NG-RAN), in which the functional splitting technique is utilized to flexibly balance the radio and computation processes at Central Units (CUs) and Distributed Units (DUs). These paradigms are complementary and have unique justifications within the 5G and beyond ecosystem. The centralized nature of C-RAN provides a higher degree of cooperation in the network to address the capacity fluctuation and to increase the spectral and energy efficiency, whereas the MEC paradigm is useful in reducing service latency and improving localized user experience; on the other hand, NG-RAN provides flexible distribution of computation a

关键词： 5G Cloud radio access network Computation offloading Next generation radio access network resource allocation algorithms Wireless communications

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Performance Evaluation of Novel resource allocation algorithms for Virtual Elastic Optical Networks

Performance Evaluation of Novel Resource Allocation Algorith...

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International Conference on Transparent Optical Networks

作者： Ricard Vilalta Raul Munoz Ramon Casellas Ricardo Martinez Centre Tecnologic de Telecomunicacions de Catalunya (CTTC) 08860 Castelldefels Spain

ISBN: (纸本)9781479956029

关键词： optical network virtualization elastic optical network resource allocation algorithms VEON GMPLS multi-domain resource broker

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A Stopgap Solution for EON resource Assignment Postponing the Need for Disruptive Technologies

A Stopgap Solution for EON Resource Assignment Postponing th...

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2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Xu, Yuxin Xing, Hang Chen, Bin College of Information Engineering Zhejiang University of Technology Zhejiang Hangzhou China School of Computer Science and Information Engineering Hefei University of Technology Anhui Hefei China

ISBN: (纸本)9798350312614

In order to enhance the network throughput for modern fiber optic networks, disruptive capacity-expanding technologies are emerging, such as spatial division multiplexing or adding L-band transmission, at the cost of enormous expenditure in labor, capital, and time. A stopgap solution is proposed in this paper to meet increasing communication needs in the short term before costly capacity-expanding techniques are needed. The proposed impairment-aware algorithm uses hybrid modulation and signal regeneration to achieve a 148 Tbps total network throughput in C-band, a 42% enhancement over the benchmark, when tested in the NSF-24 network with realistic population-based traffic. The proposed algorithm can be used as a stopgap relying mostly on existing infrastructure to temporarily ease the increasing throughput pressure. © 2023 IEEE.

关键词： Fiber optic networks physical-layer impairments resource allocation algorithms

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DIAMOND: a distributed algorithm for vertex coloring problems and resource allocation

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IET NETWORKS 2019年第6期8卷 381-389页

作者： Miri, Mohammadhasan Mohamedpour, Kamal Darmani, Yousef Sarkar, Mahasweta KN Toosi Univ Technol Dept ECE Tehran Iran San Diego State Univ Dept ECE San Diego CA 92182 USA

The vertex colouring problem (VCP) and its generalisations have myriad applications in computer networks. To solve the VCP with $\Delta + 1$Delta+1 colours, numerous distributed algorithms based on LOCAL model have been proposed to reduce time complexity (the number of rounds), where $\Delta $Delta is the maximum vertex degree in the graph. In this paper, the authors present a distributed algorithm based on modified LOCAL model (DIAMOND) that reduces the number of rounds to one. It greedily solves the VCP with at most $\Delta + 1$Delta+1 colours. Computational results on Geometry (GEOM) graphs show that the number of used colours to colour each instance using DIAMOND is about $\left({\Delta + 1} \right)/2$mml:mfenced close=")" open="("Delta+1/2. DIAMOND is easily extended to solve greedily generalised VCPs in only one round. Moreover, they present two efficient resource allocation algorithms using DIAMOND. They allocate more resource to the graph compared with $\lpar \Delta + 1\rpar $(Delta+1)-colouring and even to $\lpar \bar d + 1\rpar $(d over bar +1)-colouring algorithms, where $\bar d$d over bar is the average vertex degree of the graph. They run in two and $\Delta $Delta rounds.

关键词： graph colouring resource allocation distributed algorithms modified LOCAL model DIAMOND GEOM graphs vertex colouring problem myriad applications computer networks maximum vertex degree distributed algorithm resource allocation algorithms distributed algorithms greedily generalised VCP

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Light Beam allocation Algorithm for Eliminating Interference in Visible Light Communications 9

Light Beam Allocation Algorithm for Eliminating Interference...

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International Conference on Advanced Technologies for Communications (ATC)

作者： Nguyen, Duc-Quan Nguyen, Ngoc-Tan Nguyen, Nam-Hoang Spirinmanwat, Keattisak Humax Vietnam R&D Ctr Hanoi Vietnam VNU Univ Engn & Technol Fac Elect & Telecommun Hanoi Vietnam LED SmartCoN Org Bangkok Thailand

ISBN: (纸本)9781509027118

In this paper, we present a model of visible light communication (VLC) systems which exploit light beams for downlink transmission. A calculation method is proposed for light beam configuration (LBC) which guarantees no blind areas in the whole VLC coverage while minimizing the number of light beams. As a major contribution in this paper, a light beam allocation algorithm (LBAA) is proposed which aims to eliminate interferences between inter VLC Access Points (inter-APs) by using information of incoming data queue length and co-channel interference (CCI) conditions to decide which VLC beams are used for transmitting data to appropriate user equipment (UEs). By deploying the proposed algorithm, CCI can be eliminated because noise-effected regions and noise-free regions can be separated. Performance of the novel LBAA is analyzed, evaluated and then compared with that of another light beam allocation method using the Round-Robin algorithm. Performance results show that there are significantly improvements in term of SINR, user throughput and packet delay parameters when deploying the proposed LBAA.

关键词： Visible Light Communications (VLC) Light Beam Configuration resource allocation algorithms

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Dynamic Multi-Domain Virtual Optical Network Deployment With Heterogeneous Control Domains

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JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING 2015年第1期7卷 135-141页

作者： Vilalta, Ricard Munoz, Raul Casellas, Ramon Martinez, Ricardo Peng, Shuping Channegowda, Mayur Vlachogiannis, Tasos Nejabati, Reza Simeonidou, Dimitra Cao, Xiaoyuan Tsuritani, Takehiro Morita, Itsuro CTTC Castelldefels 08860 Spain Univ Bristol High Performance Networks Grp Bristol BS8 1TH Avon England KDDI R&D Labs Inc Fujimino Saitama 3568502 Japan

We propose a multi-domain resource broker to dynamically provision multi-domain virtual optical networks across heterogeneous control domains (i.e., GMPLS and OpenFlow) and transport (i.e., optical packet switching and elastic optical networks) technologies. We have designed, implemented, and experimentally evaluated the multi-domain resource broker in an international test-bed across Spain, the UK, and Japan.

关键词： EON GMPLS/PCE OpenFlow OPS Optical network virtualization resource allocation algorithms

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Multidomain Network Hypervisor for Abstraction and Control of OpenFlow-Enabled Multitenant Multitechnology Transport Networks [Invited]

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JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING 2015年第11期7卷 B55-B61页

作者： Vilalta, Ricard Munoz, Raul Casellas, Ramon Martinez, Ricardo Peng, Shuping Nejabati, Reza Simeonidou, Dimitra Yoshikane, Noboru Tsuritani, Takehiro Morita, Itsuro Lopez, Victor Szyrkowiec, Thomas Autenrieth, Achim CTTC Castelldefels 08860 Spain Univ Bristol High Performance Networks Grp Bristol BS8 1TH Avon England KDDI R&D Labs Inc Saitama 3568502 Japan Telefon ID Madrid 28006 Spain ADVA Opt Networking D-82152 Martinsried Germany

A virtualization architecture is presented for deploying multitenant virtual networks on top of multi-technology optical networks. A multidomain network hypervisor (MNH) and a multidomain SDN orchestrator (MSO) are introduced with this purpose. The MNH provides an abstract view of each virtual network and gives control of it to each independent customer SDN controller. The MNH is able to provide virtual networks across heterogeneous control domains (i.e., generalized multiprotocol label switching and OpenFlow) and transport technologies (i.e., optical packet switching and elastic optical networks). The MSO is responsible for providing the necessary end-to-end connectivity. We have designed, implemented, and experimentally evaluated the MNH and MSO in an international testbed across Spain, UK, Germany, and Japan.

关键词： EON GMPLS/PCE OpenFlow OPS Optical network virtualization resource allocation algorithms SDN orchestration

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Virtual Optical Network resource allocation Using PCE Global Concurrent Optimization for Dynamic Deployment of Virtual GMPLS-Controlled WSON

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JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING 2013年第12期5卷 1373-1381页

作者： Vilalta, Ricard Munoz, Raul Casellas, Ramon Martinez, Ricardo CTTC Castelldefels 08860 Spain

We present dynamic virtual optical network resource allocation (VON RA) algorithms for on-demand deployment of virtual wavelength switched optical networks (WSONs), which is handled by a resource broker with a virtual network topology manager (VNTM). The resource broker with VNTM dynamically configures and deploys independent instances of virtual WSONs over the same physical optical infrastructure and their own independent virtual generalized multiprotocol label switching control plane. The VON RA is computed by a path computation element using global concurrent optimization, which assigns the resources for the virtual optical links (e.g., wavelengths) and nodes. The experimental assessment and performance evaluation have been carried out in the ADRENALINE testbed. We discuss the obtained results on a National Science Foundation Network topology in terms of the VON request blocking rate and VON setup delay, which are used to compare the different proposed algorithms.

关键词： GMPLS/PCE Optical network virtualization resource allocation algorithms WSON

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