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2016 7th International Conference on the network of the Future, NOF 2016

作者： Aymen, Lamara Ye, Baoliu Nguyen, Thi Mai Trang Sorbonne Universités UPMC Univ Paris 06 CNRS LIP6 UMR 7606 4 place Jussieu Paris75005 France Department of Computer Science and Technology Distributed Computing Laboratory Nanjing University 163 Xianlin Street Nanjing China

ISBN: (纸本)9781509046713

Nowadays, video streaming has became one of the most popular multimedia applications and will be the dominant data traffic in cellular networks. This is a real challenge for mobile network operators because the cellular base stations will be overloaded. One promising solution to offload mobile traffic from the base stations is the use of Device-to-Device (D2D) communications. Each mobile phone can use both cellular and Wi-Fi network interfaces to download video segments either from the Internet or from a neighboring device. However, it is crucial to improve the reliability of D2D communications to maximize the offloading benefits. In this paper, we use network coding to address the reliability in cooperative D2D-based transmission of video streaming. We have implemented Random Linear network coding (RLNC) on the CoopStreaming system and evaluate the offloading gain. The experimental results show that the use of network coding has significantly improved the reliability of D2D communications among neighboring devices and therefore increased the cellular offloading gain. © 2016 IEEE.

关键词： network coding

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On the impact of zero-padding in network coding efficiency with internet traffic and video traces 22

On the impact of zero-padding in network coding efficiency w...

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22nd European Wireless Conference, EW 2016

作者： Taghouti, Maroua Lucani, Daniel E. Pedersen, Morten V. Bouallegue, Ammar Tunisia Polytechnic School University of Carthage Tunisia Department of Electronic Systems Aalborg University Denmark Communications Systems Laboratory National Engineering School of Tunis University of Tunis El Manar Tunisia

ISBN: (纸本)9783800742219

Random Linear network coding (RLNC) theoretical results typically assume that packets have equal sizes while in reality, data traffic presents a random packet size distribution. Conventional wisdom considers zero-padding of original packets as a viable alternative, but its effect can reduce the efficiency of RLNC or other erasure coding techniques. Our goal is to characterize the overhead generated by this zero-padding under real-traffic traces. These include TCP and UDP traces from traffic at core routers from CAIDA and a collection of video traces for different codecs and video resolution compiled by Arizona State University. Our numerical results show the dependence of the zero-padding overhead with the number of packets combined in a generation using RLNC. Surprisingly, medium and large TCP generations are strongly affected with more than 100%of padding overhead. Although all video traces are affected, our results show that higher resolution video has a lower overhead, due in part to the fact that most of the transmitted data packets are of the maximum size of packet in the network. © VDE Verlag GMBH, Berlin, Offenbach, Germany.

关键词： network coding

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Handoff management and performance optimization of satellite network based on cross-layer design and network coding 67

Handoff management and performance optimization of satellite...

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67th International Astronautical Congress, IAC 2016

作者： ChunFeng, Wang Li, Yong Qian Xuesen Laboratory of Space Technology China Academy of Space Technology Beijing China

The earth observation system has evolved from a single satellite platform to a multi-satellite network system. The satellites based on inter-satellite links form a space wireless Ad hoc network system. When the satellites move round the earth, the connection of the satellite with ground will transfer from a ground station to another ground station. The connection and disconnection between the satellite and the ground station will bring the problem of network IP layer mobility management and the satellite connection handoff. In order to ensure the continuity of satellite network communication, the mobile and handoff management problem of satellite network must be solved. The mobile and handoff management of satellite network is one of the key technologies especially for the LEO satellite network. There are several methods for satellite network mobile and handoff management, such as mobile IP, Seamless IP Diversity-based Generalized Mobility Architecture (SIGMA). These methods have some defects that there is long handoff delay or high packet loss rate. In this paper, the mobility characteristics of space satellite network are discussed and the cross-layer design and network coding methods are proposed for satellite network handoff management. Through theoretical analysis and simulation, the network cross-layer design and network coding method can effectively improve the satellite network handoff latency, and reduce the packet loss rate, by the scheme the handoff performance is optimized and can be sued as reference for satellite network design.

关键词： network coding

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Robust scalable video multicast using triangular network coding in LTE/LTE-Advanced

Robust scalable video multicast using triangular network cod...

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2016 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2016

作者： Chau, Phuc Lee, Yongwoo Bui, Toan Duc Shin, Jitae Jeong, Jaehoon Paul School of Electronic Electrical Engineering Sungkyunkwan University Suwon Korea Republic of Department of Interaction Science Sungkyunkwan University Suwon Korea Republic of

ISBN: (纸本)9789881476821

The recent research studies showed that inter-layered network coding is a promising approach to provide the unequal error protection for scalable video multicast under the channel heterogeneity. The selection of the optimal transmission distribution performed at eNB increases the system performance with the cost of time and computational complexities. In this paper, we propose an optimal transmission strategy for the scalable video multicast using triangular network coding at the application layer in LTE/LTE-Advanced networks. The proposed transmission strategy comprises of two optimization phases: space reduction and performance maximization. The first optimization reduces the number of searching steps in the dictionary of possible transmission distributions by using a proposed performance predictive algorithm. The following optimization not only maximizes the average number of successfully decoded layers among receivers but also maximizes the number of receivers decoding the video base layer successfully in the second phase. We evaluate the proposed transmission strategy through various simulations with the performance metrics regarding the average number of successfully decoded layers among receivers in a multicast group, throughput, and video quality measurement. The simulation results show that our proposed scheme outperforms other recent studies and adapts well with the variable streaming rates of the video under the extreme time constraints. © 2016 Asia Pacific Signal and Information Processing Association.

关键词： network coding

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POR-2P: network coding-based POR for data provision-payment system 10th

POR-2P: Network coding-based POR for data provision-payment ...

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10th International Conference on Risks and Security of Internet and Systems, CRiSIS 2015

作者： Omote, Kazumasa Thao, Tran Phuong 1-1 Asahidai Nomi Ishikawa923-1292 Japan

ISBN: (纸本)9783319318103

Proof Of Retrievability (POR) is a protocol that supports a data owner to check whether the data stored in cloud servers is available, intact and retrievable. Based on the POR, network coding technique has been applied to increase efficiency and throughput in data transmission and data repair. Although many network coding-based PORs have been proposed, most of them have not considered a practical scenario in which not only the data owner can check and can retrieve the data stored in the untrusted servers, but also an untrusted user can check and can retrieve the data stored in the servers without learning the secret keys of the data owner. This scenario occurs commonly in reality. For instance, in a data provision-payment system, the user must pay money to get data stored in the servers. In this paper, we propose a new network coding-based POR, named POR-2P (a network coding-based POR for data Provision-Payment system), to deal with this scenario. Furthermore, the complexity analysis and the performance evaluation show that the POR-2P is very efficient and applicable for a real cloud system. © Springer International Publishing Switzerland 2016.

关键词： network coding

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network coding Cooperation Performance Analysis in Wireless network over a Lossy Channel, M Users and a Destination Scenario

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Communications and network 2016年第4期8卷 257-280页

作者： Mohamed El-Hihi Hani Attar Ahmed A. A. Solyman Lina Stankovic Department of Electronic and Electrical Engineering Philadelphia University Amman Jordan The Military Technical Research Center Cairo Egypt Department of Electronic and Electrical Engineering University of Strathclyde Glasgow UK

network coding (NC), introduced at the turn of the century, enables nodes in a network to combine data algebraically before either sending or forwarding them. Random network coding has gained popularity over the years by combining the received packet randomly before forwarding them, resulting in a complex Jordan Gaussian Elimination (JGE) decoding process. The effectiveness of random NC is through cooperation among nodes. In this paper, we propose a simple, low-complexity cooperative protocol that exploits NC in a deterministic manner resulting in improved diversity, data rate, and less complex JGE decoding process. The proposed system is applied over a lossy wireless network. The scenario under investigation is as follows: M users must send their information to a common destination D and to exchange the information between each others, over erasure channels;typically the channels between the users and the destination are worse than the channels between users. It is possible to significantly reduce the traffic among users and destination, achieving significant bandwidth savings, by combining packets from different users in simple, deterministic ways without resorting to extensive header information before being forwarded to the destination and the M users. The key problem we try to address is how to efficiently combine the packets at each user while exploiting user cooperation and the probability of successfully recovering information from all users at D with k < 2M unique linear equations, accounting for the fact that the remaining packets will be lost in the network and there are two transmission stages. Simulation results show the behaviour for two and three transmission stages. Our results show that applying NC protocols in two or three stages decreases the traffic significantly, beside the fact that the proposed protocols enable the system to retrieve the lost packets rather than asking for ARQ, resulting in improved data flow, and less power consumption. In fa

关键词： network coding Cooperative System Erasure Channel Diversity

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Using Gaussian Pulses in Physical-layer network coding with Symbol Misalignment

Using Gaussian Pulses in Physical-layer Network Coding with ...

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Australian Communications Theory Workshop (AusCTW)

作者： Bao Nguyen Chan, Terence Haley, David McKilliam, Robby Univ South Australia Inst Telecommun Res Mawson Lakes SA 5095 Australia

ISBN: (纸本)9781509001330

Physical-layer network coding (PNC) can significantly improve the throughput of wireless communication systems by exploiting signal superimposition at relays. It is practically challenging to achieve symbol alignment in PNC. In this paper, we study the impact of the signal power loss and the inter-symbol-interference (ISI) on the system performance when the symbols are not aligned. We show that when the signal power loss is taken into account during the decoding process, the system performance can be improved significantly. Simulation results also show that by sacrificing spectral efficiency, the PNC system using Gaussian pulses generally achieves higher bit-error-rate (BER) performance than the one using square-root raised-cosine (RRC) pulses when symbol misalignment occurs.

关键词： System performance PNC hierarchical network Gaussian pulse Physical layer Gauss Wireless communication systems network coding Legumes Pulses Misalignment signal power Signs and symbols Throughput Square root

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network coding Anti-eavesdropping Algorithm for Ad hoc networks

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Chinese Journal of Electronics 2015年第3期24卷 639-641页

作者： LIU Jun LIU Yi'nan LIU Hui WANG Yingmei School of Information Science Engineering Northeastern University

Aiming at the anti-eavesdrop security demand and potential safety hazard in Ad hoc, a secure random linear network coding algorithm was proposed. The algorithm has secure source coding and protecting the coding vectors. The information source secure coding method and optimizing the finite region is defined to guarantee that the information is properly protected. Different coding vectors protecting schemes were designed for adapting security path and without. We applied the secure random linear network coding algorithm in Ad Hoc networks to meet the demand on anti-eavesdrop. The anti-eavesdrop algorithm based on network coding is simulated and analyzed in NS2 platform, the results shown that comparing with the encryption algorithm, the anti-eavesdrop algorithm based on network coding has better performance in end-to-end delay and encryption speed.

关键词： Ad hoc networks Security Antieavesdrop network coding

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network coding-based energy-efficient multicast routing algorithm for multi-hop wireless networks

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JOURNAL OF SYSTEMS AND SOFTWARE 2015年 104卷 152-165页

作者： Jiang, Dingde Xu, Zhengzheng Li, Wenpan Chen, Zhenhua Northeastern Univ Coll Informat Sci & Engn Shenyang 110819 Peoples R China AnQing Normal Univ Sch Econ & Management Anqing 246011 Peoples R China

Multi-hop multicast routing can provide better communication performance in multi-hop wireless networks. However, existing multi-hop multicast routing hardly take into account energy efficiency of networks. This paper studies the energy-efficient multicast communication aiming at multi-hop wireless networks. Firstly, we analyze energy metric and energy efficiency metric of multi-hop networks. Then the corresponding models are given. Secondly, network coding is used to improve network throughput. Different from previous methods, we here consider that network nodes are satisfied with a certain random distribution. In such a case, it is a challenge to construct the network structure that network coding requires. For the above random network topology, we propose three basic structures of network coding to overcome this problem. Thirdly, we present a flexible energy-efficient multicast routing algorithm for multi-hop wireless networks to extensively exploit the network structure proposed above to maximize network throughput and decrease network energy consumption. Finally, we perform numerical experiments by network simulation. Simulation results indicate that our approach is significantly promising. (C) 2015 Elsevier Inc. All rights reserved.

关键词： Multi-hop multicast network coding Energy efficiency

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network coding-Aware Compressive Data Gathering for Energy-Efficient Wireless Sensor networks

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ACM TRANSACTIONS ON SENSOR networkS 2015年第4期11卷 1–24页

作者： Ebrahimi, Dariush Assi, Chadi Concordia Univ Montreal PQ H3G 1M8 Canada

This article investigates the joint application of compressive sensing (CS) and network coding (NC) to the problem of energy-efficient data gathering in wireless sensor networks. We consider the problem of optimally constructing forwarding trees to carry compressed data to projection nodes. Each compressed dataset refers to a weighted aggregation (or sum) of sensed measurements from network sensors collected at one projection node. Projection nodes then forward their received compressed data to the sink, which subsequently recovers the original measurements. This aggregation technique, based on CS, is shown to reduce significantly the number of transmissions in the network. We observe that the presence of multiple forwarding trees gives rise to many-to-many communication patterns in sensor networks that, in turn, can be exploited to perform NC on the compressed data being forwarded on these trees. Such a technique will further reduce the number of transmissions required to gather the measurements, resulting in a better network-wide energy efficiency. This article addresses the problem of NC-aware construction of forwarding/aggregation trees. We present a mathematical model to optimally construct such forwarding trees, which encourage NC operations on the compressed data. Owing to its complexity, we further develop algorithmic methods (both centralized and distributed) for solving the problem and analyze their complexities. We show that our algorithmic methods are scalable and accurate, with worst-case optimality gap not exceeding 3.96% in the studied scenarios. We also show that, when bothNC and compressive data gathering are considered jointly, performance gains (reduction in number of transmissions) of up to 30% may be attained. Finally, we show that the proposed methods distribute the workload of data gathering throughout the network nodes uniformly, resulting in extended network life times.

关键词： Wireless sensor networks compressive data gathering network coding

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