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In today's era of communication, a company's brand is driven by more than the combination of promises made and promises kept for customer satisfaction to gain popularity of brand name. A telecommunications service provider's survival depends on its ability to prepare for changes in customer needs, as well as changes in regulation and technology. But the increasing expectations of customers and the...
The difference in transmission performance arises among child cluster heads (CCHs) on inter-cluster communications in cluster-based wireless sensor networks (WSNs) with spatial non-uniform traffic because several CCHs with different traffic loads communicate to their parent cluster head on shared communication channel. Against this problem this paper proposes traffic adaptive backoff control mechanism...
Today's Internet is a massive, distributed network which continues to grow in size as globalization takes major role in everyone's life. The problem is complicated by the fact that one cannot rely on the cooperation of individual servers and routers to aid in the collection of network traffic measurements vital for these tasks. Packet Forwarding Priority can have a significant impact on the performance...
We propose an efficient scheme for generating fake network traffic to disguise the real event notification in the presence of a global eavesdropper, which is especially relevant for the quality of service in delay-intolerant applications monitoring rare and spatially sparse events, and deployed as large wireless sensor networks with single data collector. The efficiency of the scheme that provides...
Policy-based management is considered an effective approach to address the challenges of resource management in large complex networks. Within the IU-ATC QoS Frameworks project, a policy-based network management framework, CNQF (Converged Networks QoS Framework) is being developed aimed at providing context-aware, end-to-end QoS control and resource management in converged next generation networks...
Network performance measurements have been broadly used in order to debug and to assess the reliability of the network. In general performance measurement is a resource consuming process, which in practice derives in hardly scalable systems. However, in order to control and monitor network resource usage and to assess the quality of multimedia traffic, it is broadly accepted that efficient and scalable...
Developing distributed applications for MANETs is a complex task due to the latter's bandwidth constrained nature. Further, in tactical MANETs, there is a need to prioritize traffic generated by distributed applications so that high priority traffic gets preferential access to the bandwidth constrained communication medium. Finally, applications must be designed to accommodate network bandwidth and...
The rapid introduction of new mobile data services presents many challenges to wireless service providers. Unlike voice services, whose traffic characteristics are well understood, new data services are far more volatile and their demand on network resources is harder to predict. Data volumes are exploding and impacting not only the ability of the network to support such traffic but are also driving...
In this paper we propose a Packet-based measurement technique called Floating IP Active Measurement (FIPAM) that utilizes routing loop to measure Delay and Throughput in IP networks. Calculating these parameters in multi-provider and complex networks like Internet has became a challenge as most of current active measurement tools relying on ICMP and majority of today's networks block ICMP traffics...
Phasor based Wide Area Monitoring and Control (WAMC) Systems are becoming a reality with increased research, development and deployments. Many potential control applications based on these systems are being proposed and researched. Such applications are either local applications using data from one or a few Phasor Measurement Units (PMUs) or centralized utilizing data from several PMUs. An aspect...
The requirement of QoE is gradually increasing currently. Simultaneously, as the intermedium between the users and network, devices support collecting several QoS parameters which could predict expected QoE for users. However, a large quantity of mobile devices will become the obstacle for the QoS collection due to the costs of collection traffic. To solve it, this paper proposes a framework for collecting...
This paper presents the technical assessment of the Economic Traffic Management (ETM) mechanisms that have been specified and implemented in the EU FP7 SmoothIT (Simple Economic Management Approaches of Overlay Traffic in Heterogeneous Internet Topologies) project. The proposal inter-relates traditional mechanisms of network management with economic incentives. The most relevant ETM mechanisms are...
Currently, Cloud network operators and service providers are managing server, network and storage resources by various management systems to manage hardware, applications, traffic, and resources monitoring including bandwidth, storage capacity, and throughput utilization. However, these systems are not coordinated with accounting, security and configuration systems to provide end-to-end service management...
Monitoring is crucial both to the correct operation of a network and to the services that run on it. Operators perform monitoring for various purposes, including traffic engineering, quality of service, security and detection of faults and mis-configurations. However, the relentless growth of IP traffic volume renders real-time monitoring and analysis of data a very challenging problem. In this paper...
An MPLS VPN network structure was proposed to be used in the highway monitoring network to solve the bottleneck drawbacks of the existing network,to improve the network security,and to meet the needs of the highway monitoring network. The labeling process of the network edge MPLS is similar to the classification process of the Diff-Serv model,on the basis of which the model was introduced into the...
The dominant IP traffic is moving from Web to peer-to-peer (P2P) these days. As a result, elephant flows consume bandwidth and unfairness in resources allocation occurs. The main packet-scheduling mechanism currently employed is first-in first-out (FIFO) where the available bandwidth of short flows is limited by elephant flows. Least attained service (LAS), which decides transfer priority of packets...
Monitoring transit traffic at one or more points in a network is of interest to network operators for reasons of traffic accounting, debugging or troubleshooting, forensics, and traffic engineering. Previous research in the area has focused on deriving a placement of monitors across the network towards the end of maximizing the monitoring utility of the network operator for a given traffic routing...
In this paper, we propose a network performance monitoring method which can measure delay of each network using the RTCP(Real-time Transport Control Protocol) timestamp fields to detect a trouble section in interworking environment. According to the increment of real-time multimedia service provision, network performance monitoring method is necessarily needed for QoS management of real-time services...
One of the biggest challenges faced when dealing with QoS over the Internet is how to deliver QoS over an unregulated, connectionless network that was designed, deployed, operated, managed, and commercialized without any QoS perspectives. This article gives a concise but comprehensive overview of the Internet QoS puzzle. We aim not only at identifying all the pieces of the puzzle, but also at discovering...
We present a State Estimation based Internet traffic flow control system where the objective is to maximize the aggregate bandwidth utility of network sources over their transmission rates. The network links and sources are viewed as processors of distributed computation and the control mechanism is based on estimation and optimization framework to solve the dual problem. The novelty of our approach...
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