Cross Layer QoS Implementations: The Clean-Slate Approach
01 Jan 2012-pp 53-93
About: The article was published on 2012-01-01. It has received 5 citations till now.
Citations
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01 Sep 2013
TL;DR: This paper continues the idea of a gearbox-like routing algorithm selection in runtime presented at IEEE LANMAN 2011 by having a real implementation of the the Modified Dijkstra's and Floyd-Warshall algorithms in OpenFlow.
Abstract: This paper continues the idea of a gearbox-like routing algorithm selection in runtime presented at IEEE LANMAN 2011 Following the results obtained by simulations, the objectives were this time to have a real implementation of the the Modified Dijkstra's and Floyd-Warshall algorithms in OpenFlow The testbed under Fedora Core consisted on four virtual switches Open vSwitch 13 and a software controller Beacon 102 The individual performance evaluation of the two algorithms was done based on the end-to-end available transfer rate, using RTSP video flows over UDP without transfer rate obtrusion The congestion was realized by generating UDP background traffic using iperf
12 citations
TL;DR: This article describes how actual trends of networks-on-chip research and known approaches to their modeling are considered, and the comparison of results for high-level, low-level and SystemC NoC simulation is given on the example of "hot spots" and the geometric shape of regular NoC topologies effect on their productivity.
Abstract: This article describes how actual trends of networks-on-chip research and known approaches to their modeling are considered. The characteristics of analytic and high- / low- level simulation are given. The programming language SystemC as an alternative solution to create models of networks-on-chip is proposed, and SystemC models speed increase methodic is observed. The methods of improving SystemC models are formulated. There has been shown how SystemC language can reduce the disadvantages and maximize the advantages of high-level and low-level approaches. To achieve this, the comparison of results for high-level, low-level and SystemC NoC simulation is given on the example of “hot spots” and the geometric shape of regular NoC topologies effect on their productivity.
10 citations
02 May 2013
TL;DR: The paper is focused on Nagios, an open-source flexible monitoring tool for enterprises, and aims to prove that the integration of this enhanced software tool running on several platforms (Android, Windows7, Fedora Core) is a benefit for network administrators.
Abstract: The paper is focused on Nagios, an open-source flexible monitoring tool for enterprises. The goal was to add new objects (i.e. QoS parameters) in a management information base MIB starting with the root object identifier OID .1.3.6.1.4.1.8072.9999.9999.1. Furthermore, we wanted to prove that the integration of this enhanced software tool running on several platforms (Android, Windows7, Fedora Core) is a benefit for network administrators. The newly created SNMP Agent and with the existing Nagios Agent were able to update the parameters: Available Transfer Rate ATR and One-Way-Delay OWD. Due to cross-layer techniques involved, the overall solution is an evolutionary step forward towards Future Internet implementations (although it is still stick on SNMP approach).
6 citations
Cites background from "Cross Layer QoS Implementations: Th..."
...In the next section, based on our previous work [1] and [13], we present how to add new objects (i....
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...The cross-layer techniques involved are not covered by this paper, the details being available in [13]....
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01 Jan 2016
TL;DR: This chapter delve to describe four recent trends in interference mitigation technologies that will change the design of the future 4G and beyond (5G) of mobile and wireless communication systems.
Abstract: In this chapter we discuss the general techniques of multi-antenna systems. Then, we delve to describe four recent trends in interference mitigation technologies that will change the design of the future 4G and beyond (5G) of mobile and wireless communication systems. Particularly, we consider the coordinated multi-point MIMO systems, smart terminal devices techniques, millimeter-wave communications and massive MIMO systems. We discuss the fundamental concepts of those new approaches, along with their advantages, and the challenges facing such technologies. Even though the references list of this chapter is not anticipated to be exhaustive, the cited articles and also the references therein should be good sources of further reading to start with.
6 citations
01 Oct 2016
TL;DR: Evaluation of Nagios, an open-source flexible monitoring tool for enterprises, in a cloud-based network orchestrated by OpenStack, aims at collecting the Available Transfer Rates and One-Way Delays of the links within the cloud, in order to provide the optimization of the Network Virtualization Functions.
Abstract: This paper is focused on evaluation of Nagios, an open-source flexible monitoring tool for enterprises, in a cloud-based network orchestrated by OpenStack. The work relies on a previous work done within UC Labs which added new objects (i.e. QoS parameters) in a management information base MIB. The solution aims at collecting the Available Transfer Rates and One-Way Delays of the links within the cloud, in order to provide the optimization of the Network Virtualization Functions.
5 citations
Cites background from "Cross Layer QoS Implementations: Th..."
...The cross-layer techniques involved are not discussed herein, the details being available in [2]....
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References
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TL;DR: This work reveals that it is in general not optimal to regard the information to be multicast as a "fluid" which can simply be routed or replicated, and by employing coding at the nodes, which the work refers to as network coding, bandwidth can in general be saved.
Abstract: We introduce a new class of problems called network information flow which is inspired by computer network applications. Consider a point-to-point communication network on which a number of information sources are to be multicast to certain sets of destinations. We assume that the information sources are mutually independent. The problem is to characterize the admissible coding rate region. This model subsumes all previously studied models along the same line. We study the problem with one information source, and we have obtained a simple characterization of the admissible coding rate region. Our result can be regarded as the max-flow min-cut theorem for network information flow. Contrary to one's intuition, our work reveals that it is in general not optimal to regard the information to be multicast as a "fluid" which can simply be routed or replicated. Rather, by employing coding at the nodes, which we refer to as network coding, bandwidth can in general be saved. This finding may have significant impact on future design of switching systems.
8,533 citations
TL;DR: For the multicast setup it is proved that there exist coding strategies that provide maximally robust networks and that do not require adaptation of the network interior to the failure pattern in question.
Abstract: We take a new look at the issue of network capacity. It is shown that network coding is an essential ingredient in achieving the capacity of a network. Building on recent work by Li et al.(see Proc. 2001 IEEE Int. Symp. Information Theory, p.102), who examined the network capacity of multicast networks, we extend the network coding framework to arbitrary networks and robust networking. For networks which are restricted to using linear network codes, we find necessary and sufficient conditions for the feasibility of any given set of connections over a given network. We also consider the problem of network recovery for nonergodic link failures. For the multicast setup we prove that there exist coding strategies that provide maximally robust networks and that do not require adaptation of the network interior to the failure pattern in question. The results are derived for both delay-free networks and networks with delays.
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TL;DR: The benefits of cross-layer feedback on the mobile device and a representative survey are discussed and the proposed protocol stack would be useful to improve the efficiency of these protocol stacks.
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Abstract: Should researchers focus on designing new network architectures or improving the currentlnternet? .
107 citations