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International Conference on Transparent Optical networks

作者： Mohamed O. I. Musa Taisir E. H. El-Gorashi Jaafar M. H. Elmirghani School of Electronic and Electrical Engineering University of Leeds United Kingdom

ISBN: (纸本)9781509014682

network coding has been proven to be an effective approach towards achieving the network capacity and resources efficiency. However, most of the work achieved has been under the umbrella of wireless networks. In this paper we investigate the use of network coding to improve energy efficiency of the IP/WDM optical core considering unicast traffic flows by implementing coding at the optical layer of intermediate nodes. The mixed integer linear programming results show that network coding can improve the energy efficiency by up to 28% on the NSFNET compared to conventional non-bypass approach. The results show that the network coded bypass approach also outperforms the conventional bypass approach.

关键词： network coding Power demand Transponders Energy efficiency Optical fibers IP networks

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network coding Function Virtualization

Network Coding Function Virtualization

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IEEE International Workshop on Signal Processing Advances in Wireless Communications

作者： Tan Do-Duy M. A. Vazquez-Castro School of Engineering Autonomous University of Barcelona Spain

ISBN: (纸本)9781509017508

network Function Virtualization (NFV) and network coding (NC) have attracted much attention in recent years as key concepts for 5G networks to provide flexibility and substantial gains in throughput and reliability, respectively. In this paper, we propose the integration of NC and NFV architectural designs. Specifically, a toolbox of NC functionalities are identified so that NC can be designed as a virtual network function that provides flow engineering functionalities to the network. In order to do so we first identify NC layer-independent architectural design domains, which we then map to the NFV framework. Our resulting virtual network coding functionality (VNCF) can be used by the network to engineer the throughput and reliability of multiple information network flows depending on the ultimate service operational intent. We apply our proposed VNCF to a study case where the network uses databases with geo-tagged link statistics on the wireless highways created by percolation to engineer information flows. Our results provide a two-fold validation of our proposal. First, we show how VNCF allows the network to have full control over the throughput, reliability and connectivity up to theoretical limits. Second, we show how NCF virtualization (NCFV) allows the same functionality to apply over different underlying physical networks, including satellite or hybrid thus enabling softwarization and rapid innovative deployment.

关键词： Virtualization Protocols Virtualization protocols Numerical controls Nelfinavir Throughput Virtual networks network coding full control Building design

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network coding and MPTCP in satellite networks

Network coding and MPTCP in satellite networks

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Advanced Satellite Mobile Systems (ASMS)

作者： Giovanni Giambene Doanh Kim Luong Van Anh Le Muhammad Muhammad Department of Information Engineering and Mathematical Sciences University of Siena Siena Italy

Satellite networks are expected to support multimedia traffic flows, offering high capacity with QoS guarantees. This paper deals with Multipath-TCP (MPTCP), which exploits multiple TCP connections using different paths in order to improve user's throughput. In this study, MPTCP is combined with network coding to protect TCP transmissions from packet losses caused by ON/OFF channels in mobile satellite systems. A novel scheme, named Path-Based network coding for MPTCP (PBNC-MPTCP), has been proposed that applies Pseudo Random network coding (PRNC) to sub-flows, where the encoded packets of a block are sent on different paths in order to exploit path diversity. We have evaluated the PBNCMPTCP performance by means of Ns-2 simulations, showing that PBNC-MPTCP outperforms other schemes in the literature that combine MPTCP with network coding.

关键词： Satellites network coding Encoding Mobile communication Packet loss Communication channels

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network coding based on hyper-edge decomposition for wireless network with link failures

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INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS 2015年第7期28卷 1387-1399页

作者： Wang, Jing Chi, Kaikai Yang, Yang Wang, Xinmei Changan Univ Sch Informat Engn Xian 710064 Peoples R China Zhejiang Univ Technol Coll Comp Sci & Technol Hangzhou 310023 Zhejiang Peoples R China Xidian Univ State Key Lab Integrated Serv Networks Xian 710071 Peoples R China

This paper is concerned with the construction of network coding for wireless network with link failures. Based on hyper-edge decomposition, for the wireless network, we first construct the hyper-edge graph, where each node represents one hyper-edge (consisting of multiple adjacent edges transmitting the same information) of the wireless network. Then we present a heuristic coloration method for the hyper-edge graph, and a network coding vector allocation scheme based on maximum distance separable code is proposed to effectively overcome some link failures. Copyright (c) 2014 John Wiley & Sons, Ltd.

关键词： network coding wireless network link failure hyper-edge decomposition heuristic coloration

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network coding for reliable downlink transmissions in industrial wireless sensor and actuator networks

Network coding for reliable downlink transmissions in indust...

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International Symposium on Wireless Communication Systems (ISWCS)

作者： Jing Yue Svetlana Girs Johan Åkerberg Mats Björkman Zihuai Lin School of Electrical and Information Engineering The University of Sydney Australia School of Innovation Design and Engineering Mälardalen University Sweden ABB AB Corporate Research Sweden Malardalens Hogskola Vasteras SE

Benefits, such as significant reduction of cost and complexity, brought by wireless communication make wireless networks more and more appealing for industrial applications. However, before wireless systems can be deployed in industrial networks, strict industrial requirements on reliability and timeliness must be fulfilled and thus protocols increasing the performance of wireless communication are needed. Data in industrial systems is typically transmitted in two directions: from sensor nodes to a controller (uplink transmission) and from the controller to actuators (downlink transmission). Several previous studies have looked at possibilities of performance increase in uplink transmissions from the sensors, while not that much work focused on downlink transmissions, which are equally important. Thus, this paper addresses the downlink transmission scenario and presents a new protocol introducing network coding into packet forwarding scheme. Simulation results show that packet reception rate can be increased when network coding is applied.

关键词： Actuators Reliability Downlink Wireless communication Relays Protocols network coding

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network coding is the 5G Key Enabling Technology: effects and strategies to manage heterogeneous packet lengths

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TRANSACTIONS ON EMERGING TELECOMMUNICATIONS TECHNOLOGIES 2015年第1期26卷 46-55页

作者： Compta, Pol Torres Fitzek, Frank H. P. Lucani, Daniel E. Acticom GmbH Berlin Germany Aalborg Univ Dept Elect Syst Aalborg Denmark

The exponential growth of the mobile devices market, not only smartphones but also tablets, laptops or wearables, poses a serious challenge for 5G communications. Random linear network coding is a promising solution for present and future networks as it has been shown to provide increased throughput, security and robustness for the transmission of data through the network. Most of the analysis and the demonstrators have focused on the study of data packets with the same size (number of bytes). This constitutes a best-case scenario as coded packets will incur little overhead to handle such packets. However, packet lengths are quite heterogeneous in real networks, which can cause a high overhead or, alternatively, a high delay in the transmission of data packets. As we show, this can have a severe effect on a variety of applications. This paper proposes a series of mechanisms to manage heterogeneous packet lengths and analyses the induced overhead of those mechanisms using real packet length distributions provided by the Center for Applied Internet Data Analysis (CAIDA) and own measurements using video content. Our results show that an appropriate packetisation of the data packets can reduce the overhead from over 100per cent (zero-padding packets) to below 5per cent for CAIDA packet distributions and that the right choice of parameters can reduce the overhead to less than 10per cent in the case of video data. Copyright (c) 2014 John Wiley & Sons, Ltd.

关键词： network coding

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network coding techniques for VANET advertising applications

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EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND networkING 2015年第1期2015卷 1页

作者： Ahmed, Shereen A. M. Ariffin, Sharifah H. S. Fisal, Norsheila Univ Teknol Malaysia UTM MIMOS Ctr Excellence Telecommun Technol Fac Elect Engn Utm 81310 Kagawa Malaysia

network coding is an emerging technique known to improve the network performance in many aspects. In Vehicular Ad-hoc networks (VANET), the bandwidth is considered to be one of the most important network resources. In this paper, we propose a network coding technique to improve the bandwidth utilization for non-safety applications in VANET. In a scenario where there are two sources broadcasting the data into the same area at the same time, the relay will use the network coding technique to decrease the number of rebroadcasting events and the consumption of the bandwidth, However, a fundamental problem for the relay when it receives a packet, is whether to wait for a coding opportunity and save the bandwidth or send the packet directly and reduce the delay. In order to address such tradeoff, we introduce two versions of our protocol, namely buffer size control scheme (BSCS) and time control scheme (TCS);by both versions we aim to control the delay that is experienced by the packet at each hop, while achieving better bandwidth utilization. Up to 38 % improvement in the bandwidth utilization has been recorded, and both schemes have shown a considerable amount of control on the imposed delay.

关键词： VANET network coding Non-safety applications Comfort applications Broadcasting Routing Data dissemination

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network coding based Content Caching in Hierarchical Cloud Service network for 5G

Network Coding based Content Caching in Hierarchical Cloud S...

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IEEE Global Communications Conference

作者： Bo Feng Lirong Jiang Gang Feng Shuang Qin Yantao Guo Nat. Key Lab. of Sci. & Technol. on Commun. Univ. of Electron. Sci. & Technol. of China Chengdu China Sci. & Technol. on Inf. Transm. & Dissemination in Commun. Networks Lab. Shijiazhuang China

ISBN: (纸本)9781509013296

The next generation mobile network (5G) faces enormous challenges with increasing mobile multimedia and data services. To address the vast data traffic volume and minimize transmission cost, it is imperative to develop efficient content caching strategy, which is deemed as a key technique for 5G. In this paper, we exploit cloud computing and network coding techniques in mobile networks, based on a Hierarchical Cloud Service network (HCSN) architecture, to provision content delivery service on demand. In our proposed content caching framework, cloud service providers deploy a plurality of cloudlets at the edge of network, to fulfill data service requirements by caching and transmission of data content. We design a network coding based Caching Policy (NCCP) based on greedy algorithm. Local cloudlets cache data content in advance, update the cache dynamically and transmit data content in a cooperative way. We use simulation experiments to validate the effectiveness of our proposed caching strategy. Numerical results show that the proposed strategy can significantly improve the cache hit rate as well as reduce average transmission cost in HCSN.

关键词： Caching Cloudlet Mobile networks network coding

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network coding in internet of things

Network coding in internet of things

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IEEE International Workshop on Computer-Aided Modeling, Analysis, and Design of Communication Links and networks, CAMAD

作者： Farzad Amirjavid Petros Spachos Liang Song Konstantinos N. Plataniotis Department of Electrical and Computer Engineering University of Toronto Toronto ON Canada School of Engineering University of Guelph Guelph ON Canada OMESH Networks Inc. Toronto Canada

ISBN: (纸本)9781509025596

Wireless Smart Home Sensor network (WSHSN) is a home-similar environment, where several wireless sensors can observe the home status and transmit the data streams to the Smart Home Information System (SHIS). Communication in Wireless Sensor network (WSN) in small living environments faces noise and data transmission speed problems. Especially in the case of employing mobile agents, the WSN restructures dynamically, hence the network performance reduces dramatically. On the one hand, the Internet of Things (IoT) concept includes a broad application of wireless devices, while on the other hand, the WSN throughput decreases significantly by application of more wireless devices. network coding is a promising technique that can help to broaden the utilization of nodes in WSNs, while network throughput improves by the application of more wireless nodes. In this paper, IoT in WSHSN is modelled as a particular instance of butterfly network and the corresponding network coding based methodology aiming to increase the network throughput is proposed. A case study, supporting the theory of network coding in IoT in small living rooms, is proposed.

关键词： Wireless sensor networks network coding Smart homes Throughput Mobile agents Wireless networks

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network coding-based Content Distribution in Cellular Access networks

Network Coding-based Content Distribution in Cellular Access...

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Ad-Hoc and Sensor networks Symposium

作者： Claudio Fiandrino Dzmitry Kliazovich Pascal Bouvry Albert Zomaya University of Luxembourg University of Sydney

ISBN: (纸本)9781479966653

Mobile cloud applications have become extremely popular in the last years. Location-based services, navigation, online gaming and social networking are a representative set of "always on" cloud applications in which the same or partially overlapping content is delivered to multiple users. network coding is a well matching solution to improve content delivery. In this paper we propose the vNC-CELL technique, which uses network coding to combine information flows carrying the same or overlapping content that has to be delivered to co-located users. vNC-CELL executes coding functionalities in a mobile cloud through virtualization as these operations are computationally intensive if performed locally at the base station. Performance evaluation obtained from NS-3 simulations confirms vNC-CELL ability to improve network throughput and reduce download times for the users.

关键词： network coding Cellular networks Content distribution

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