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IEEE Wireless Communications and networking Conference (WCNC)

作者： Ostovari, Pouya Khreishah, Abdallah Wu, Jie Temple Univ Dept Comp & Informat Sci Philadelphia PA 19122 USA New Jersey Inst Technol Dept Elect & Comp Engn Newark NJ 07102 USA

ISBN: (纸本)9781467359399;9781467359382

Video is one of the main causes of the dramatic increase in data traffic over cellular networks. Caching is an effective mechanism that decreases the download rate from base stations and, as a result, the load on the base station, by storing the most popular files or videos on the caches and providing them to the users. The problem of efficient content placement on the caches is known as an NP-complete problem. In this paper, we study the role of network coding by increasing the amount of available data to the users through the cache nodes. We propose a network coding-based content placement method, and we compare it to the best uncoded content placement and the best triangular network coding strategies. Our method not only increases the amount of available data to the users, but also results in a fair distribution of data.

关键词： Linear network coding triangular network coding caching content placement wireless networks

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Diversity and network Coded 5G Wireless network Infrastructure for Ultra-Reliable Communications

Diversity and Network Coded 5G Wireless Network Infrastructu...

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作者： Sulieman, Nabeel Ibrahim University of South Florida

学位级别：Ph.D.

This dissertation is directed towards improving the performance of 5G Wireless Fronthaul networks and Wireless Sensor networks, as measured by reliability, fault recovery time, energy consumption, efficiency, and security of transmissions, beyond what is achievable with conventional error control technology. To achieve these ambitious goals, the research is focused on novel applications of networking techniques, such as Diversity coding, where a feedforward network design uses forward error control across spatially diverse paths to enable reliable wireless networking with minimal delay, in a wide variety of application scenarios. These applications include Cloud-Radio Access networks (C-RANs), which is an emerging 5G wireless network architecture, where Remote Radio Heads (RRHs) are connected to the centralized Baseband Unit (BBU) via fronthaul networks, to enable near-instantaneous recovery from link/node failures. In addition, the ability of Diversity coding to recover from multiple simultaneous link failures is demonstrated in many network scenarios. Furthermore, the ability of Diversity coding to enable significantly simpler and thus lower-cost routing than other types of restoration techniques is demonstrated. Achieving high throughput for broadcasting/multicasting applications, with the required level of reliability is critical for the efficient operation of 5G wireless infrastructure networks. To improve the performance of C-RAN networks, a novel technology, Diversity and network coding (DC-NC), which synergistically combines Diversity coding and network coding, is introduced. Application of DC-NC to several 5G fronthaul networks, enables these networks to provide high throughput and near-instant recovery in the presence of link and node failures. Also, the application of DC-NC coding to enhance the performance of downlink Joint Transmission-Coordinated Multi Point (JT-CoMP) in 5G wireless fronthaul C-RANs is demonstrated. In all these scenarios, it is shown

关键词： C-RAN F-RAN WSN Near-Instantaneous Recovery triangular network coding

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Enhanced Diversity and network Coded 5G Wireless Fog-Based-Fronthaul networks 88

Enhanced Diversity and Network Coded 5G Wireless Fog-Based-F...

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88th IEEE Vehicular Technology Conference (VTC-Fall)

作者： Sulieman, Nabeel I. Balevi, Eren Gitlin, Richard D. Univ S Florida Dept Elect Engn Innovat Wireless Informat Networking Lab iWINLAB Tampa FL 33620 USA

ISBN: (纸本)9781538663585

The synergistic combination of Diversity and network coding (DC-NC) was previously introduced to provide very low end-to-end latency in recovering from a link failure and improve the throughput for a wide variety of network architectures. This paper is directed towards further improving DC-NC to be able to tolerate multiple, simultaneous link failures with less computational complexity. In this way, reliability will be maximized and the recovery time from multiple link or node failures is reduced in SG fronthaul wireless networks. This is accomplished by modifying triangular network coding (TNC) to create enhanced DC-NC (eDC-NC) that is applied to 5G wireless Fog computing-based Radio Access networks (Fog-RAN). Our results show that using eDC-NC coding in Fog-RAN fronthaul network will provide ultra-reliability and enable near instantaneous fault recovery while retaining the throughput improvement feature of DC-NC. In addition, the scalability of eDC-NC coding is demonstrated. Furthermore, it is shown that the redundancy percentage for complete protection is always less than 50% for the practical cases that were evaluated.

关键词： 5G Diversity coding Fog-RAN reliability throughput triangular network coding

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Ultra-Reliable and Energy Efficient Wireless Sensor networks 19

Ultra-Reliable and Energy Efficient Wireless Sensor Networks

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IEEE 19th Wireless and Microwave Technology Conference (WAMICON)

作者： Sulieman, Nabeel I. Gitlin, Richard D. Univ S Florida Dept Elect Engn Tampa FL 33620 USA

ISBN: (纸本)9781538612675

Near instant link failure recovery and lower energy consumption can be achieved via the synergistic combination of Diversity and modified triangular network coding (eDC-NC), an open-loop coding technique, in a wide variety of network architectures. In this paper, eDC-NC is applied to Wireless Sensor networks (WSNs) to enable very rapid recovering from wireless link/node failures and provide low computational and energy cost, which are very important metrics for WSNs. It is shown that utilizing eDC-NC coding in WSNs can provide ultra-reliability with very rapid fault recovery, decrease energy consumption, and increase the network throughput for broadcasting applications.

关键词： Diversity coding triangular network coding reliability throughput Wireless Sensor network

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Robust wireless transmission of scalable coded videos using two-dimensional network coding

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COMPUTER networkS 2016年第0期95卷 115-126页

作者： Ostovari, Pouya Wu, Jie Temple Univ Dept Comp & Informat Sci Philadelphia PA 19122 USA

With the rapid increase in the popularity of wireless devices (e.g. smartphones and tablets) and watching videos over the Internet, delivering high quality videos to mobile users over wireless links is becoming an important application. Diversity of the receivers is a main challenge of multicasting in wireless networks, where variant channel conditions of end users lead to different packet delivery rates. In order to handle these heterogeneous channel conditions, multi-resolution videos can be used to deliver videos at multiple quality levels. The recent research studies on multi-resolution codes show that triangular network coding can increase the quality of the received videos by the users. In this paper, considering the dependencies among different temporal and spatio (resolution) layers of a video, we propose the concept of two-dimensional triangular network coding that performs network coding between the temporal and spatio layers. We also propose the concept of coding speed, which realizes difference balances between video playback smoothness and resolution. We evaluate our proposed two-dimensional coding schemes through simulations using two video sequences. (C) 2015 Elsevier B.V. All rights reserved.

关键词： Streaming Scalable video coding Unequal error protection Inter-layer network coding triangular network coding Wireless networks

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