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IEEE Global Conference on Communications (GLOBECOM) / Workshop on Wireless networking and Control for UAV

作者： Al-Abiad, Mohammed S. Sorour, Sameh Hossain, M. D. Jahangir Univ British Columbia Kelowna BC Canada Univ Idaho Moscow ID 83843 USA

ISBN: (纸本)9781538647271

In this paper, we consider the use of cross-layer network coding and fog radio access networks (F-RANs) as a means to jointly optimize user's quality-of-service and offload the cloud servers and cellular macro base-stations. Multiple edge nodes called enhanced remote radio heads (eRRHs) are connected to a central unit known as cloud base station (CBS). The transmit frame of each eRRH consists of multiple resources blocks called power zones (PZs), each fixed at a pre-assigned power level. The various ergodic capacities of different users at different PZs/eRRHs and the CBS bring a new trade-off between the number of multiplexed users and the transmission rates of each PZ and each CBS allocated channel. The proposed framework incorporates such information in the network coding decisions. As such, the multiplexed users, encoded files, and transmission rates of each PZ/eRRH and each CBS allocated channel maximizes the throughput which is defined as the number of correctly received bits and actual CBS physical-resource offloading, respectively. The problem is first formulated using graph theory techniques, and its intractability is shown. Given the difficulty of the problem, the paper proposes a heuristic approach by dividing it into two sequential subproblems and solving each subproblem efficiently. Presented simulation results reveal that the proposed solution achieves small offloading performance degradation compared to the cross-layer QoS unaware scheme but largely maximizes the received throughput compared to the state-of-art algorithms.

关键词： Cloud radio access networks network coding power configuration quality-of-service

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Optimal Scheduling for Multi-Hop Video Streaming with network coding in Vehicular networks 87

Optimal Scheduling for Multi-Hop Video Streaming with Networ...

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87th IEEE Vehicular Technology Conference (VTC-Spring)

作者： Gao, Yumeng Xu, Xiaoli Zeng, Yong Guan, Yong Liang Nanyang Technol Univ Sch Elect & Elect Engn Singapore Singapore Natl Univ Singapore Dept Elect & Comp Engn Singapore Singapore

ISBN: (纸本)9781538663554

In this paper, we investigate the optimal scheduling schemes for multi-hop video streaming with generation-based random linear network coding in vehicular networks. With the proposed scheduling algorithm, each vehicle in the network is guaranteed to decode the video block from the dedicated transmissions and the overheard packets with high probability. We derive explicit expression for the number of network coded packets that need to be generated at each vehicle in order to ensure successful decoding at its downstream vehicles, by considering the overheard packets due to wireless broadcasting. Furthermore, the distance beyond which the channel can be reused is optimized to maximize the achievable video generating rate at the source node. Simulation results show that the proposed coding and scheduling scheme achieves higher end-to-end throughput than the conventional packet erasure correction coding scheme that is only optimized for one-hop communications.

关键词： network coding

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Mobile Cloud-of-Clouds Storage Made Efficient: A network coding Based Approach 37

Mobile Cloud-of-Clouds Storage Made Efficient: A Network Cod...

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37th IEEE International Symposium on Reliable Distributed Systems (SRDS)

作者： Shen, Jiajie Li, Yi Zhou, Yangfan Wang, Xin Fudan Univ Sch Comp Sci Shanghai Peoples R China Shanghai Key Lab Intelligent Informat Proc Shanghai Peoples R China Shanghai Inst Intelligent Elect & Syst Shanghai Peoples R China

ISBN: (纸本)9781538683019

Cloud-of-clouds storage is a viable means to ensure security and reliability of distributed data storage, where data are encrypted, encoded, and stored in multiple clouds. However, it is a great challenge to adopt such a paradigm in mobile devices (e.g., smartphone). Mobile devices are generally incapable to perform the heavy-weight operations (i.e., data encryption, encoding, and transmission) required in such a paradigm, given the limited resources in such devices. This paper focuses on addressing this challenge, i.e., improving data storage performance in mobile cloud-of-clouds storage systems. The key of our proposal is to allow the low-capability mobile devices to offload the computational and transmission overhead to the clouds. In other words, we propose a network coding based Cloud-of-clouds Storage (NCCS) scheme, where the clouds can encode and exchange data collaboratively. We consider two state-of-the-art cloud-of-clouds storage approaches, i.e., AONT-RS and CAONT-RS, as example cases to deploy our scheme. Accordingly, we propose their network coding-based enhancements, namely NAONT-RS and NCAONT-RS. We implement a prototype cloud-of-clouds system to verify the efficiency of our proposal. We deploy the prototype on Microsoft Azure and conduct extensive experiments with real-world traces. The experimental results show that NAONT-RS and NCAONT-RS can reduce the time of data storage process by up to 50% and improve the throughput by up to 110% compared with their original versions, i.e., AONT-RS and CAONT-RS.

关键词： Cloud computing Encoding Mobile handsets Encryption Throughput network coding

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Adaptive Forwarding Control using network coding for Efficient Multicasting in Mobile Ad-hoc networks 8

Adaptive Forwarding Control using Network Coding for Efficie...

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8th ACM Symposium on Design and Analysis of Intelligent Vehicular networks and Applications (DIVANet)

作者： Yoshida, Masami Gallegos, Alberto Noguchi, Taku Ritsumeikan Univ Kusatsu Shiga Japan

ISBN: (纸本)9781450359641

In mobile ad-hoc networks (MANETs) composed of mobile devices, network resources such as battery capacity and bandwidth are limited. Therefore, in such networks, it is particularly important to reduce unnecessary packet transfers and the use of network resources and power to ensure efficient multicast communications. In this study, we apply network coding to conventional flooding in order to achieve efficient and reliable multicasting in MANETs. network coding makes it possible to reduce the number of packets transmitted over the network and to use devices and network resources effectively. The packet-reduction bene fits obtained using network coding depend greatly on the network topology. Therefore, we propose a novel method called adaptive forwarding control, which uses network coding and flooding for efficient multicasting. Our proposed scheme switches between conventional flooding and network coding, depending on the topology, to derive the bene fits from both flooding and network coding.

关键词： ad-hoc network network coding multicast

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Physical-Layer network coding for the Downlink of Dual Connectivity Scenarios

Physical-Layer Network Coding for the Downlink of Dual Conne...

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IEEE International Conference on Computing, Communications and IoT Applications

作者： Kanghua Chen Ying Wang Junwei Zhao Zhengwei Lyu Xiaojin Zheng State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Huawei Technologies Co. Ltd.

ISBN: (数字)9781728119731

ISBN: (纸本)9781728119748

Dual connectivity (DC) has attracted a lot of attention with the higher demand for reliable data transmission in 5G. We consider the application of network coding technology on DC scenario. Aiming at a special topology of DC, a new physical layer downlink network coding scheme (PHY-DL-NC) is proposed. In the proposed scheme, network coding technology is adopted in the physical layer of the base station (BS) through designing a new user data modulation mode and a corresponding mapping demodulation scheme. Compared with the traditional scheme, the proposed scheme guarantees the bit error rate (BER) performance when there exists the same frequency band signals interference. Simulation results show that the PHY-DL-NC scheme has a significantly lower BER when the co-frequency signal interference is large. Besides, it can significantly reduce backhaul load in the absence of signal interference, while achieving a similar performance to the ideal traditional transmission scheme in terms of BER.

关键词： Dual connectivity network coding Modulation mode Backhaul load network coding modulation mode Downlink Physical layer Frequency bands Bit error rate data transmission hierarchical network Signal interference

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A Joint Mechanism for Fog-Relay networks Based on NOMA and network coding

A Joint Mechanism for Fog-Relay Networks Based on NOMA and N...

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IEEE Globecom Workshops

作者： Fanbo Wei Ting Zhou Tianheng Xu Honglin Hu Xiaoming Tao Chinese Academy of Sciences Shanghai Advanced Research Institute China Department of Electronic Engineering Tsinghua University Beijing China

ISBN: (数字)9781728109602

ISBN: (纸本)9781728109619

Mobile edge computing (MEC) and fog computing are considered to be a promising technique for the fifth generation (5G) networks. The main features of them are to push computing tasks to network edges. Meanwhile, to achieve low latency and high access speed, it is necessary to adopt an advanced transmission mechanism at network edges. Considering the advantages of large rate and high reliability provided by non-orthogonal multiple access (NOMA) and network coding, in this paper we propose a hybrid round-trip transmission mechanism at network edges. Specifically, we consider a fog node as a relay; and utilize a hybrid concept to design a NOMA-NC method which combines uplink NOMA and downlink network coding. Theoretical derivation and numerical results demonstrate that the proposed method distinctly outperforms both (i) traditional orthogonal multiple access (OMA) method combining OMA and network coding (namely OMA-NC); and (ii) NOMA-based round-trip transmission method (namely NOMA-NOMA).

关键词： NOMA Uplink Downlink Throughput network coding Relays Edge computing

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Galois field arithmetics for linear network coding using AVX 512 instruction set extensions

arXiv

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arXiv 2019年

作者： Günther, Stephan M. Appel, Nicolas Carle, Georg Network Architectures and Services Department of Computer Science Astronautics Department of Mechanical Engineering Technische Universität München

Linear network coding [1] requires arithmetic operations over Galois fields, more specifically over finite extension fields. While coding over GF(2) reduces to simple XOR operations, this field is less preferred for practical applications of random linear network coding due to high chances of linear dependencies [2] and therefore redundant coded packets. coding over larger fields such as GF(16) and GF(256) does not have that issue, but is significantly slower. SIMD vector extensions of processors such as AVX2 on x86-based systems or NEON on ARM-based devices offer the potential to increase performance by orders of magnitude [3], [4]. In this paper we present an implementation of different algorithms and Galois fields based on the AVX 512 instruction set extension and integrate it into the finite field library libmoepgf [4]. We compare the performance of the new implementation to the reference implementation based on AVX2, showing a significant increase in throughput. In addition, we provide a survey of the best possible coding performance offered by a variety of different platforms. The updated finite field library is available under the LGPL at [5]. Copyright © 2019, The Authors. All rights reserved.

关键词： network coding

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A Novel Fault Tolerance Parallel Routing Mechanism with network coding in Hybrid Wireless-Optical Broadband Access network

A Novel Fault Tolerance Parallel Routing Mechanism with Netw...

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International Conference on Computing, networking and Communications (ICNC)

作者： Zhang, Hong Wang, Ruyan Wang, Honggang Wu, Guangkai Chongqing Univ Posts & Telecommun Sch Commun & Informat Engn Chongqing Peoples R China Univ Massachusetts Dartmouth Elect & Comp Engn Dept N Dartmouth MA USA

ISBN: (纸本)9781538636527

Survivability is the critical issue in the wirelessoptical broadband access network (WOBAN) since that any failure of network components would resulted in a large amount of traffic interrupted. The previous mechanisms suffer from two key issues. First, they must reroute the interrupted traffic to the backup resources which caused a long recovery time. Second, the deployment of backup fiber could increase the recovery cost. To address these problems, a novel fault tolerance parallel routing mechanism with network coding (FTPR-NC) is proposed in this paper to enhance the survivability. In FTPR-NC mechanism, the original packets are coded to the optimal number of encoded packets which results in the minimum cost of recovery. Then the encoded packet is transferred to the destination node in accordance with the packet allocation scheme which results in the minimum number of encoded packet when recover the original packets by parallel routings. Numerical results show that the proposed FTPR-NC mechanism outperforms the previous mechanism significantly on the performance of average delay. Meanwhile, the FTPR-NC mechanism dramatically decrease the recovery time when a failure occurs.

关键词： parallel routing network coding survivability hybrid wireless-optical broadband access network (WOBAN)

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The Anonymous Secure Transmission Mechanism of Power Information Based on network coding and Homomorphic Encryption

The Anonymous Secure Transmission Mechanism of Power Informa...

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IEEE International Conference on Computer and Communications

作者： Jingtang Luo Shiying Yao Dongliang Gao Yun He Jiamin Zhang Se Grid Sichun Econoic Reserch InsiueSe Grid Sichun Econoic Reserch InsiueSe Grid Sichun Econoic Reserch InsiueThe Schoo of Couer Counicion Engineering Universiy of Science Technoogy BeijingThe Schoo of Couer Counicion Engineering Universiy of Science Technoogy Beijing

ISBN: (数字)9781728147437

ISBN: (纸本)9781728147444

The business control center of the power grid adjusts grid load and power supply with a large amount of user power data. However, the malicious attacker illegally monitors and steals the user's power information transmitted by the netw ork, which poses a great threat to the privacy of the user. Aiming at the above problems, this paper proposes an anonymous security transmission mechanism of power information based on network coding and homomorphic encryption technology. Firstly, the data collector divides and encodes the meter information, and encrypts the coding coefficients with the homomorphic encry ption function, which ensures the security of transmission information. the forw arding network adopts multipath coding transmission and homomorphic encryption technology, which improves the anonymity, security and ability of anti-collusion attacks of meter information transmission. The analysis results show that only the control center at the receiving end can recover the original communication information by decoding the encoded information, and the transmission mechanism has strong anonymity and security, and has loss computational complexity.

关键词： Encoding Encryption Data privacy Relays network coding Meters

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Hybrid network coding and Cooperative Communication in WBAN

Hybrid Network Coding and Cooperative Communication in WBAN

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International Conference on Engineering Technology and their Applications (IICETA)

作者： Ahmed Alkhayyat Mahmoud Shuker Mahmoud Technical engineering college The Islamic University Najaf Iraq Al-Mansour University College Baghdad Iraq

ISBN: (数字)9781728141053

ISBN: (纸本)9781728141060

Combining the cooperative communications and network coding allows the relay to assistance other nodes while serving its own data concurrently. In this paper, we propose a novel Two Master Nodes - Cooperative network coding (TMN-CNC) protocol under the log-normal shadowing channel model, for the wireless body area network (WBAN). The design objective of the TMN-CNC is to increase transmission probability. The numerical results show that the TMN-CNC can enhance network performance compared to direct transmission.

关键词： Body area networks Protocols Cooperative communication Wireless sensor networks network coding IEEE 802.15 Standard

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