The Software Defined networking (SDN) approach has recently demonstrated its effectiveness in simplifying the dynamic management of networking capabilities of infrastructure environments such as datacenters, e.g., by ...
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ISBN:
(纸本)9781538636527
The Software Defined networking (SDN) approach has recently demonstrated its effectiveness in simplifying the dynamic management of networking capabilities of infrastructure environments such as datacenters, e.g., by greatly enhancing the flexibility of dispatching features provided by industrial-grade switches. Inspired by the previous and more traditional scenario, we propose SDN adoption in infrastructureless distributed multi-hop spontaneous networks based on the impromptu collaboration of fixed/mobile devices, with the goal of significantly improving the Quality of Service perceived by final users. To this purpose, the paper outlines our primary guidelines and reference architecture to support quality-aware packet dispatching. In particular, we present how collaborative nodes can exploit the SDN approach to appropriately manage the quality of different traffic flows, by avoiding undesired interference and by taking into consideration network capabilities/conditions and application-level requirements.
Along with non-safety related applications, traffic safety is the major concern of the Vehicular Ad-hoc Networks (VANETs). However, the mobility management due to the high speed of vehicles, intermittent connectivity,...
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ISBN:
(纸本)9781538636527
Along with non-safety related applications, traffic safety is the major concern of the Vehicular Ad-hoc Networks (VANETs). However, the mobility management due to the high speed of vehicles, intermittent connectivity, and frequent topology variations are some of the crucial roadblocks. These challenges impose setback for quality of service (QoS) guarantee that leads to unfulfilled goals of VANETs deployment. The centralized control of the Software-Defined networking (SDN) paradigm allows optimum utilization of global network view to meet the QoS requirements. Furthermore, by a systematic design of the SDN control plane, the issues of mobility management and poor network connectivity can also be addressed in an efficient manner. In this paper, we propose an SDN-based architecture that utilizes cloud computing and deals with inherent constraints of VANETs. A logically distributed control plane is devised for seamless connectivity, mobility management, and QoS support. The proposed model achieves optimum performance and robustness against failures by harnessing capabilities of SDN and cloud computing. We implemented the QoS and routing applications to evaluate the proposed model. The comparative experimental results are presented to demonstrate the effectiveness of the proposed framework.
This paper presents a novel architectural principle for distributed and heterogeneous systems integrating Fog computing and networking approaches, which has been proposed within the "Green Adaptive Fog computing ...
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ISBN:
(纸本)9788887237405
This paper presents a novel architectural principle for distributed and heterogeneous systems integrating Fog computing and networking approaches, which has been proposed within the "Green Adaptive Fog computing and networking Architecture" (GAUChO) project, funded by the MIUR Progetti di Ricerca di Rilevante Interesse Nazionale (PRIN) Bando 2015 -grant 2015YPXH4W-004. In particular a modular and flexible platform has been designed and developed, supporting lowlatency and energy-efficiency applications as well as security, self-adaptation, and spectrum efficiency by means of a strict collaboration among devices. Specifically, the focus here is on the design of an integrated protocol architecture supporting mobile Fog-oriented services, and the developed Fog computing testbeds.
Edge computing will likely be of significant import to the Smart City context, providing a means to deploy and manage large distributed applications [5] [3]. Although Edge computing is receiving significant attention ...
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ISBN:
(纸本)9781728103594
Edge computing will likely be of significant import to the Smart City context, providing a means to deploy and manage large distributed applications [5] [3]. Although Edge computing is receiving significant attention at present, many issues relating to this paradigm remain unclear. In this paper, we focus specifically on mechanisms required to extend Data Centre networking technologies to edge devices. More specifically, we describe the solution we have developed which enables Open Virtual networking (OVN) to be extended to the edge to support integration with a docker engine located at the edge of the network. The mechanisms consist of a process by which a docker engine can request to join the network, an approval process which leverages Openstack authentication and access control mechanisms, a mechanism by which the remote system can connect to the OVN and finally containers can be initialized on the remote docker engine and interact with entities operating in the Enterprise Data Centre.
The vector clock is a fundamental tool for tracking causality in distributed applications. Unfortunately, it does not scale well to large systems because each process needs to maintain a vector of size n, where n is t...
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ISBN:
(纸本)9781450363723
The vector clock is a fundamental tool for tracking causality in distributed applications. Unfortunately, it does not scale well to large systems because each process needs to maintain a vector of size n, where n is the total number of processes in the system. To address this problem, we propose the encoding of the vector clock using prime numbers to use a single number to represent vector time. We propose the operations on the encoded vector clock (EVC). We then show how to timestamp global states and how to perform operations on the global states using the EVC. We also discuss scalability issues of the EVC.
SDN is new networking concept which has revolutionized the network architecture in recent years. It decouples control plane from data plane. Architectural change provides re-programmability and centralized control man...
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SDN is new networking concept which has revolutionized the network architecture in recent years. It decouples control plane from data plane. Architectural change provides re-programmability and centralized control management of the network. At the same time it also increases the complexity of underlying physical infrastructure of the network. Unfortunately, the centralized control of the network introduces new vulnerabilities and attacks. Attackers can exploit the limitation of centralized control by DDoS attack on control plane. The entire network can be compromised by DDoS attack. Based on packet entropy, a solution for mitigation of DDoS attack provided in the proposed scheme.
Internet of Things (IoT) technologies are driving changes in Industry 4.0. Applications developed based on the IoT system may have high requirements on the real-time property of data transmission. To provide the real-...
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Indirect association rules and association action rules are two notable extensions of traditional association rules. Since these two extended rules consist of a pair of association rules, they share the same essential...
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The evacuation of mobile robots is an interesting emerging application in distributedcomputing. This paper considers the fundamental problem of how to evacuate two robots from a unit disk. The robots, initially locat...
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ISBN:
(纸本)9781450363723
The evacuation of mobile robots is an interesting emerging application in distributedcomputing. This paper considers the fundamental problem of how to evacuate two robots from a unit disk. The robots, initially located at the center of the disk, need to exit the disk through two unknown exits, at known distance d from each other, located at the perimeter of the disk. The robots can coordinate when exploring the disk, using wireless communication. The objective is to minimize the evacuation time, i.e., the time until the last robot exits the disk. We consider two different model variants, where exits can either be labeled or unlabeled. We complement our analysis with simulations.
This volume presents the SC19 Technical Papers proceedings. All of the papers included herein underwent a rigorous, double-blind, peer-review process by a committee of 256 experts in high-performance computing (HPC) o...
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ISBN:
(数字)9781450362290
ISBN:
(纸本)9781665483919
This volume presents the SC19 Technical Papers proceedings. All of the papers included herein underwent a rigorous, double-blind, peer-review process by a committee of 256 experts in high-performance computing (HPC) organized into ten technical tracks: Algorithms; Applications; Architectures & Networks; Clouds & distributedcomputing; Data Analytics, Visualization & Storage; Machine Learning and HPC (new for SC19); Performance; Programming Systems; State of the Practice; and System Software. A total of 339 papers were submitted for review, with 87 of them (25%) being selected to be presented at the conference and included in these proceedings. These 87 papers drive forward the field of HPC along its many axes: computing, networking, storage, and analysis.
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