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IEEE International Conference on Communications (IEEE ICC) / Workshop on NOMA for 5G and Beyond

作者： Marandi, Ali Braun, Torsten Salamatian, Kave Thomos, Nikolaos Univ Bern Bern Switzerland Univ Savoie Chambery France Univ Essex Colchester Essex England

ISBN: (纸本)9781728150895

This paper presents a complete framework for content discovery and retrieval in Information-Centric networks. For content discovery, we implement a method similar to our previously developed pull-based BFR [1], which uses Bloom filter-based signaling to inform servers about the name prefixes of available requests. For content retrieval, we propose in this paper a feedback-based cooperative protocol implementing network coding-based forwarding. The proposed network coding-based protocol provides a distributed solution to control the multi-session codeblock size, i.e., the number of variables that are combined into network coded packets, by setting a capacity constraint on each node and by piggybacking the available capacity as feedback on messages sent to neighbors. The network codes are decided using linear programming. We compare the proposed network coding-based protocol with push-based BFR [2] and pull-based BFR [1]. The results show that the proposed protocol outperforms both push-based BFR and pull-based BFR in terms of content discovery overhead and average content block retrieval delay.

关键词： network coding

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Lower Bounds for External Memory Integer Sorting via network coding

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COMMUNICATIONS OF THE ACM 2020年第10期63卷 97-105页

作者： Farhadi, Alireza Hajiaghayi, Mohammad Taghi Larsen, Kasper Green Shi, Elaine Univ Maryland College Pk MD 20742 USA Aarhus Univ Aarhus Denmark Cornell Univ Ithaca NY USA

Sorting extremely large datasets is a frequently occurring task in practice. These datasets are usually much larger than the computer's main memory;thus, external memory sorting algorithms, first introduced by Aggarwal and Vitter, are often used. The complexity of comparison-based external memory sorting has been understood for decades by now;however, the situation remains elusive if we assume the keys to be sorted are integers. In internal memory, one can sort a set of n integer keys of Theta(lg n) bits each in O(n) time using the classic Radix Sort algorithm;however, in external memory, there are no faster integer sorting algorithms known than the simple comparison-based ones. Whether such algorithms exist has remained a central open problem in external memory algorithms for more than three decades. In this paper, we present a tight conditional lower bound on the complexity of external memory sorting of integers. Our lower bound is based on a famous conjecture in network coding by Li and Li, who conjectured that network coding cannot help anything beyond the standard multicommodity flow rate in undirected graphs. The only previous work connecting the Li and Li conjecture to lower bounds for algorithms is due to Adler et al. Adler et al. indeed obtain relatively simple lower bounds for oblivious algorithms (the memory access pattern is fixed and independent of the input data). Unfortunately, obliviousness is a strong limitation, especially for integer sorting: we show that the Li and Li conjecture implies an Omega(n lg n) lower bound for internal memory oblivious sorting when the keys are Theta(lg n) bits. This is in sharp contrast to the classic (nonoblivious) Radix Sort algorithm. Indeed, going beyond obliviousness is highly nontrivial;we need to introduce several new methods and involved techniques, which are of their own interest, to obtain our tight lower bound for external memory integer sorting.

关键词： network coding

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Design and Implementation of a network coding Platform based on NetFPGA and ns-3

Design and Implementation of a Network Coding Platform based...

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IEEE Conference on network Function Virtualization and Software Defined networks (IEEE NFV-SDN)

作者： Chan, Shu-Min Xie, Meng-Hua Chang, Han-Sheng Huang, Chin-Ya Natl Taiwan Univ Sci & Technol Dept Elect & Comp Engn New Taipei Taiwan

ISBN: (纸本)9781665439831

In existing wireless networks, path loss and signal interference have a negative impact on the user experience. network coding is a technique that brings higher throughput and more stable *** network coding based algorithms for end-to-end network performance is seldom addressed which might limit the opportunities applying network coding in reality. In this paper, we propose a network coding platform that consist of network Simulator 3 (ns-3) and a programmable switch (NetFPGA). The former is used to emulate a wireless network environment for an application while the latter is used to enhance the performance running the network coding based algorithms which are computationally intensive in realtime. We will demonstrate the usage of the proposed platform to evaluate the performance in terms of end-to-end throughput and latency in aWiFi network. Based on such platform, various computationally intensive algorithms can be further designed and investigated in different networks in the future.

关键词： Programmable Switch network coding ns-3 NetFPGA

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network coding Aware User Plane for Mobile networks 16

Network Coding Aware User Plane for Mobile Networks

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16th International Conference on network and Service Management (CNSM) / 2nd International Workshop on Analytics for Service and Application Management (AnServApp) / 1st International Workshop on the Future Evolution of Internet Protocols (IPFuture)

作者： Turk, Yekta Zeydan, Engin Bilgin, Zeki Zorba, Baris Berk Aselsan AS TR-34906 Yenimahalle Ankara Turkey CTTC Barcelona 08860 Spain Arcelik Res TR-34950 Istanbul Turkey

ISBN: (纸本)9783903176317

In this paper, we propose a network coding (NC) enabled transmission strategy in the User Plane (UP) of mobile backhaul for networks operators. In the proposed method, NC provides robustness against the transport network failures, so that there will not be any more processing for re-transmission by the User Equipment (UE) in comparison to traditional approaches where re-transmissions are performed by UE applications. Our simulation results indicate that an average 1% loss ratio in the backhaul link creates 59.44% additional total transmission time compared to normal standard GPRS Tunneling Protocol - User Plane (GTP-U) transmission. On the other hand, applying NC at 1% and 2% rates reduces this amount to 52.99% and 56.26% respectively, which is also better than the total transmission time performance of some previously studied dynamic replication schemes as keeping bandwidth utilization at low ratios. Moreover, we also observe a trade-off between total transmission time and NC rate related to expected packet loss ratio such that minimum total transmission time is obtained when NC rate is equal to expected packet loss rate.

关键词： User plane mobile networks network coding backhaul

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Adaptive network coding Broadcasting based on Node Mobility in Mobile Ad-hoc networks 9

Adaptive Network Coding Broadcasting based on Node Mobility ...

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9th International Symposium on Computing and networking Workshops, CANDARW 2021

作者： Yoshida, Masami Ramonet, Alberto Gallegos Noguchi, Taku Ritsumeikan University Graduate School of Information Science And Engineering Shiga Japan Tokushima University Graduate School of Technology Industrial And Social Sciences Faculty of Science And Technology Tokushima Japan Ritsumeikan University College of Information Science And Engineering Shiga Japan

ISBN: (纸本)9781665428354

Mobile ad-hoc networks (MANETs) have limited network resources, such as node battery capacity and wireless frequency band. Therefore, in such networks, it is particularly important to reduce unnecessary packet transfers and to maximize the use of network resources and power, to ensure efficient broadcast communications. network coding (NC) is a technique that reduces the number of transmitted packets over a network and enables the efficient use of devices and network resources. The packet-reduction benefits obtained using NC depend considerably on the network topology. In this study, we propose an NC method specifically designed for MANETs. In our approach, the nodes switch the type of transmission between an uncoded transmission (simple broadcast) and a coded transmission (NC) based on the estimated neighboring node's proximity. We evaluated the effectiveness of the proposed method using computer simulations. Our evaluations demonstrate that the proposed method can reduce the number of packets in the network without decreasing the packet delivery rate. © 2021 IEEE.

关键词： network coding

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A lightweight secure image super resolution using network coding 16

A lightweight secure image super resolution using network co...

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16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, VISIGRAPP 2021

作者： Vien, Quoc-Tuan Nguyen, Tuan T. Nguyen, Huan X. Faculty of Science and Technology Middlesex University The Burroughs LondonNW4 4BT United Kingdom School of Computing Buckingham University Hunter St. BuckinghamMK18 1EG United Kingdom

ISBN: (纸本)9789897584886

Images play an important part in our daily life. They convey our personal stories and maintain meaningful objects, events, emotions etc. People, therefore, mostly use images as visual information for their communication with each other. Data size and privacy are, however, two of important aspects whilst transmitting data through network like internet, i.e. the time prolongs when the amount of data are increased and the risk of exposing private data when being captured and accessed by irrelevant people. In this paper, we introduce a unified framework, namely Deep-NC, to address these problems seamlessly. Our method contains three important components: the first component, adopted from Random Linear network coding (RLNC), to protect the sharing of private image from the eavesdropper;the second component to remove noise causing to image data due to transmission over wireless media;and the third component, utilising Image Super-Resolution (ISR) with Deep Learning (DL), to recover high-resolution images from low-resolution ones due to image sizes reduced. This is a general framework in which each component can be enhanced by sophisticated methods. Simulation results show that an outperformance of up to 32 dB, in terms of Peak Signal-to-Noise Ratio (PSNR), can be obtained when the eavesdropper does not have any knowledge of parameters and the reference image used in the mixing schemes. Various impacts of the method are deeply evaluated to show its effectiveness in securing transmitted images. Furthermore, the original image is shown to be able to downscale to a much lower resolution for saving significantly the transmission bandwidth with negligible performance loss. Copyright © 2021 by SCITEPRESS - Science and Technology Publications, Lda. All rights reserved.

关键词： network coding

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The Performance of LDPC coding Cooperative System Based on network coding 10th

The Performance of LDPC Coding Cooperative System Based on N...

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10th International Conference on Frontier Computing, FC 2020

作者： He, Yifeng Wei, Dong Duan, Zhemin Jin, Anzhong Xi’an Institute of Space Radio Technology Xi’an710100 China Electronic Information College Northwestern Polytechnical University Xi’an710072 China

ISBN: (纸本)9789811601149

Wireless resources are limited, and the reliability of data transmission is increasingly demanded. With the progress of wireless technology, higher data rate is required, which leads to how to reliably improve the data transmission rate has become the main research direction of wireless mobile communication. The purpose of this paper is to study the performance of LDPC coding cooperative system based on network coding and provide technical suggestions for optimizing cooperative system. This paper focuses on LDPC coding collaboration system performance and code design. Secondly, the concepts of coding ideal collaboration and non-ideal collaboration are introduced, and the multiplicative interference characteristics of coding non-ideal collaboration are analyzed. Secondly, a coding cooperative communication system using multi-antenna target terminal is proposed, which can obtain cooperative diversity gain, coding gain and receiving diversity gain at the same time. For this system, a method of cooperation based on normal LDPC code is proposed. The result shows that the bit error rate is generally lower than 0.2, which proves the effectiveness of the system. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： network coding

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network coding for Integrated Access and Backhaul Wireless networks 29

Network Coding for Integrated Access and Backhaul Wireless N...

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29th Wireless and Optical Communications Conference (WOCC)

作者： Mao, Wei Narasimha, Murali Simsek, Meryem Nikopour, Hosein Intel Corp Santa Clara CA 95054 USA

ISBN: (纸本)9781728161242

5G new radio (NR) requires a very dense deployment of cellular infrastructure, which poses a great economical challenge if traditional fiber backhaul links are used. To cope with this problem, 3GPP introduced integrated access and backhaul (IAB), aiming to use wireless backhaul to provide high capacity and great deployment flexibility. The multi-hop and multi-route topology for this new type of access networks challenges the existing retransmission-/repetition-based reliability-enhancing technique, such as ARQ/HARQ and packet duplication. However, it also opens up new opportunities for novel reliability enhancement techniques. In this paper, taking advantage of the more complex network topology of IAB, we propose to use linear network coding as a potentially better solution to improve end-to-end latency and reliability. We discuss its placement in the IAB protocol stack, and propose two novel schemes to improve the performance of network coding in the IAB network: the rate-proportional traffic splitting scheme in the multi-route scenario, and the adaptive coded-forwarding scheme in the multi-hop scenario. Simulation results show that in some typical IAB scenarios our network coding solution has considerable performance gains over the existing repetition-based technology.

关键词： 5G integrated access and backhaul network coding multi-hop multi-route network

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network coding Gaps for Completion Times of Multiple Unicasts 61

Network Coding Gaps for Completion Times of Multiple Unicast...

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61st IEEE Annual Symposium on Foundations of Computer Science (FOCS)

作者： Haeupler, Bernhard Wajc, David Zuzic, Goran Carnegie Mellon Univ Pittsburgh PA 15213 USA Stanford Univ Stanford CA 94305 USA

ISBN: (纸本)9781728196213

We study network coding gaps for the problem of makespan minimization of multiple unicasts. In this problem distinct packets at different nodes in a network need to be delivered to a destination specific to each packet, as fast as possible. The network coding gap specifies how much coding packets together in a network can help compared to the more natural approach of routing. While makespan minimization using routing has been intensely studied for the multiple unicasts problem, no bounds on network coding gaps for this problem are known. We develop new techniques which allow us to upper bound the network coding gap for the makespan of k unicasts, proving this gap is at most polylogarithmic in k. Complementing this result, we show there exist instances of k unicasts for which this coding gap is polylogarithmic in k. Our results also hold for average completion time, and more generally any l(p) norm of completion times.

关键词： network coding coding gap multiple unicast unicast completion time

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Enhancing Emergency Messages Dissemination in Vehicular networks Using network coding

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WIRELESS PERSONAL COMMUNICATIONS 2020年第4期113卷 2189-2201页

作者： Mazouz, Asma Semchedine, Fouzi Zitouni, Rafik Setif Univ LRSD Lab El Bez 19000 Setif Algeria Univ Ferhat Abbas Setif 1 Inst Opt & Precis Mech IOMP Setif 19000 Algeria ECE Paris SIC Lab 37 Quai Grenelle F-75015 Paris France VEDECOM Inst Versailles France

Vehicular ad-hoc networks play an important role in providing safety on the road. Vehicles generate and exchange emergency and control messages to avoid dangerous situations. According to IEEE 1609.4 standard, all these messages share the same control channel interval even if the emergency messages are with a highest priority. Besides that, network's characteristics, such as vehicle density and high mobility, would make the diffusion of emergency messages a challenging task. Especially with the absence of acknowledgements and retransmission. network coding could be seen as a solution where a block of data packets could be sent on the same transmission process. Firstly, we analyze the messages' dissemination, and we propose a thoroughly model for success probability according to the emergency messages' generation probabilities. Further, we propose a new network coding access scheme. The emergency messages take the priority in the channel access and it could be retransmitted several times. Thus, the scheme deals with the emergency messages' loss and latency. NS-3 simulations show that our model increases emergency messages' reliability.

关键词： VANETs IEEE 1609 4 Emergency messages Success probability network coding

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