Tag Archive: 'opnet guru'

Traffic Engineering Using Multi-protocol Label Switching (MPLS) for Delay Sensitive Traffic

Traffic engineering is one of the most challenging topics in Multi-protocol Label switching (MPLS) which deal with controlling traffic in such a way so that optimized path can be achieved with respect to network utilization and efficient data delivery. Internet traffic use Interior Gateway Protocol (IGP) to send traffic over the network using the shortest […]

User-specific QoS aware scheduling and implementation in wireless systems

In this paper, we explore user-specific QoS requirements and associated schedulers that are very critical in optimizing the spectral allocation for wireless systems. Two user-specific QoS aware schedulers are proposed that considers the user-specific QoS requirements in the allocation of resources. Depending upon whether improving the MOS (Mean Opinion Score) or both the system capacity […]

A Data Visualization Approach for Trustworthiness in Social Networks for On-line Learning

Up to now, the problem of ensuring collaborative activities in e-Learning against dishonest students’ behaviour has been mainly tackled with technological security solutions. Over the last years, technological security solutions have evolved from isolated security approaches based on specific properties, such as privacy, to holistic models based on technological security comprehensive solutions, such as public […]

Special issue on mobile social networks

Social networks contribute a significant fraction of Internet traffic, and increasingly this traffic is in support of mobile social networking using smart phones. This situation has spurred considerable recentresearch interest in mobile social networks. Social networks have been studied for decades, although most of the earlier work in this area addressed issues lying outside the scope of technological networks. […]

Virtual device passthrough for high speed VM networking

Supporting network I/O at high packet rates in virtual machines is fundamental for the deployment ofCloud data centers and Network Function Virtualization. Historically, SR-IOV and hardwarepassthrough were thought as the only viable solution to reduce the high cost of virtualization. In previous work [15] we showed how even plain device emulation can achieve VM-to-VM speeds of millions of packets […]

Software defined network traffic measurement: Current trends and challenges

Next generation networks such as Software Defined Networks (SDN) must support the integration of new paradigms of service offerings such as virtual cloud computing, big data applications, data centers services, and rich multimedia content. Operators of next generation SDNs are responsible for configuring policies that employ traffic monitoring tools and measurement mechanisms to detect and […]

Quality of service control and resource prioritization with Software Defined Networking

In this study, we aim to analyze how Software Defined Networking (SDN) can help to ensure a high-quality uninterrupted Voice over Internet Protocol (VoIP) service accompanied by video for prioritized users and entities in a network congested with background traffic. Guaranteeing a level of Quality of Service (QoS) and resource prioritization are key concepts for future networks […]

Distributed Service Level Flow Control and Fairness in Wireless Mesh Networks

IEEE 802.11s mesh networking standard supports Mesh Coordinated Channel Access (MCCA) to provide better quality of service (QoS) through channel reservation during the MAC layer channel access. According to the current QoS specifications, network traffic can be broadly classified into four classes – voice, video, background and best effort. However, MCCA does not directly support the standard […]

An open source research platform for embedded visible light networking

Despite the growing interest in visible light communication, a reference networking platform based on commercial off-the-shelf components is not available yet. An open source platform would lower the barriers to entry of VLC network research and help the VLC community gain momentum. We introduce OpenVLC, an open source VLC research platform based on software-defined implementation. […]

Cost Minimization for Rule Caching in Software Defined Networking

Software-Defined Networking (SDN) is an emerging network paradigm that simplifies network management by decoupling the control plane and data plane, such that switches become simple data forwarding devices and network management is controlled by logically centralized servers. In SDN-enabled networks, network flow is managed by a set of associated rules that are maintained by switches […]