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Network traffic captures are necessary for a variety of security applications like identification of malicious patterns or training of intrusion detection systems. While monitoring of enterprise networks is common practice, it is rarely done for industrial production environments due to low bandwidth, confidential production data and sensitive legacy components. To address these challenges, we present...
In Elastic Optical Net-works (EONs), dynamic allocation and release of lightpaths will lead to frequency spectrum fragment issue which making the optical spectrum into non-aligned, isolated and small-sized spectrum segments. Defragmentation strategies are key issues to minimize this problem. In this paper, we investigate the states of spectrum when the bandwidth blocking probability (BBP) is high,...
A mode conversion-based crosstalk-aware routing, spectrum and mode assignment (MC-CA RSMA) algorithm is introduced in space-division multiplexing elastic optical networks (SDM-EONs) over few-mode fibers. Simulation results show the MC-CA RSMA algorithm can greatly reduce the impact of inter-mode crosstalk on network performance compared with benchmark algorithms.
With the popularity of smart devices in a variety of actions to drive more usage of wireless broadband networks. OTT refers to delivery of video, audio and other media over the Internet. The video-related applications and services are major challenges that impact the network performance in the future. It is important to achieve network and service traffic offloading to overcome high-speed, real-time,...
In this paper, we investigate tradeoff between failure probability and load balancing in flexible bandwidth optical networks. We develop a tradeoff-principle algorithm (TPA) to improve spectrum efficiency and introduce a traditional algorithm (TA) for comparison. Simulation results show that TPA achieves better performance compared to TA.
We apply the statistical network assessment process (SNAP) to estimate merit of flex- vs. fix-grid spectral-use with increasing-size traffic grooming (RG) of 20, 40 and 100 Gbps and progressive traffic requests on the residual C-band of the Italian network, partially loaded by legacy and defragmented traffic with a residual bandwidth percentage (RBP) of 25%, 50% and 75%. We show how the blocking probability...
This paper evaluates the performance of the first-last-exact fit spectrum allocation policy for elastic optical networks. The first-last-exact fit spectrum allocation policy is intended to increase the number of aligned available slots and avoid small contiguous available slots, and hence suppresses the blocking probability. This policy separates the allocation of disjoint and non-disjoint connections...
One of the most profitable and emerging high-tech markets is the one that involves games for PC and consoles; a market that is growing year by year and that is rapidly evolving. Several big game corporations are implementing now the remote video streaming through the domestic network between two devices; a feature that regards not only PCs but also consoles. This paper investigates one of the main...
To achieve ever increasing demand for higher user throughput, 3rd Generation Partnership Project (3GPP) have introduced Carrier Aggregation (CA) feature in the Long-Term Evolution — Advanced (LTE-A) standard. Wherein, the CA feature widens the transmission bandwidth by aggregating multiple Component Carriers (CCs) to meet the demand for higher data rate. To the best of our knowledge, till now available...
Software Defined Networking (SDN) is a new networking paradigm that separates the network control plane from the packet forwarding plane. It provides the applications with an abstracted and centralized view of the distributed network state. This paper utilizes SDN for congestion awareness and traffic scheduling for the switch congestion control. For such a purpose, a traffic assignment optimization...
This paper presents information about multi-access network and comparing a few technologies to provide the best quality of service. The paper provides a description of the basis for modeling a multi-access network. The models involved in the article take into condition an ability of setting priorities to a number of elected traffic classes. Solving the problem of prioritizing network traffic can increase...
Currently, the Internet is one important part of the campus infrastructure that supports the teaching and learning activities. The important part of the internet facility is the provided bandwidth as Bandwidth management to teaching and learning is indispensable. In this study, an analysis and cluster of the university internet traffic is required as bandwidth management decision support. Therefore,...
Connection Admission Control (CAC) is one of the resource allocation functions which plays a significant role to ensure Quality of Service (QoS) provisioning in wireless networks. To meet connection requirements, and achieve bandwidth efficiency with less computation complexity, we present a CAC mechanism for OFDMA-based WiMAX networks which uses fuzzy sets and fuzzy logic theory to admit new incoming...
In Ad Hoc technology, a mobile node is characterized by a limited battery power. Therefore, the energy consumption becomes an important challenge that must be taken into account when designing a new Ad Hoc routing protocol. An efficient routing protocol should also consider a high level of Quality of Service (QoS) such as the end-to-end delay and the bandwidth as the applications do not have the same...
An auxiliary graph (AG) is designed to address traffic grooming under dynamic traffic scenario in spatial division multiplexing enabled elastic optical networks (SDM-EON). Various traffic grooming policies are achieved by adjusting the edge weights of AG, and evaluated through simulation in terms of spectrum efficiency and inter-core crosstalk. Numeric results show that the proposed SDM grooming reduces...
Time and Wavelength Division Multiplexed Passive Access Network (TWDM-PON) can support 40Gb/s transmission rate, which has become a hot research topic. Due to the bandwidth flexibility, wavelength flexibility and multiple users' access, it is imperative to optimize network resources, improve the transmission rate meanwhile reduce network energy consumption. This paper has proposed two optimization...
The complexity of network routing infrastructures is increased dramatically. To tackle this issue, a promising state-of-the-art paradigm called software defined networking (SDN) is introduced. Due to the differences in the network requirements of applications, QoS-aware routing plays an important role in the networks. Recent proposed resource allocation algorithms focus on the current traffic matrix...
In this paper, a new dynamic access scheme is proposed which differentiates secondary users (SUs) on the basis of their type: voice or data call. A voice call is preferred over a data call in the paper. If a primary user (PU) wants to access the spectrum, then a SU with data call will be placed in buffer. If no SU with data call is accessing the spectrum, then one of the SU with voice call will give...
Software Defined Networking (SDN) is emerging as a new paradigm in which the control plane is decoupled from the data plane. SDN is an enabler of network control to become directly programmable. The underlying infrastructure can be abstracted from applications and network services. Recently, SDN has rapidly expanded and attracted many research efforts. In the open literature, analytical tools have...
Network traffic measurement is significant for network security and network management. As network bandwidth increases and internet applications varies, network big data is bringing new challenge for network traffic measurement. Because the existing network traffic measurement mainly processes network traffic data by the centralized method, it is very difficult to meet the application needs of massive...
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