Category Archive: 'PHD Opnet Projects'

Processor-Network Speed Scaling for Energy–Delay Tradeoff in Smartphone Applications

Many smartphone applications, e.g., file backup, are intrinsically delay-tolerant so that data processing and transfer can be delayed to reduce smartphone battery usage. In the literature, these energy–delay tradeoff issues have been addressed independently in the forms of Dynamic Voltage and Frequency Scaling (DVFS) problems and network selection problems when smartphones have multiple wireless interfaces. In this paper, we […]

Virtual network provisioning over distance-adaptive flexible-grid optical networks [Invited]

In software-defined optical networks (SDONs), network services are provided in terms of virtual optical networks (VONs). VON provisioning requires additional considerations regarding their optical characteristics and constraints compared to virtual networks offered in the electrical domain. In this paper, we present a new VON provisioning procedure that is specifically designed for distance-adaptive flexible-grid optical networks. […]

The Design of Safe Networked Supervisory Medical Systems Using Organ-Centric Hierarchical Control Architecture

There are growing demands to leverage network connectivity and interoperability of medical devices in order to improve patient safety and the effectiveness of medical services. However, if not properly designed, the integration of medical devices through networking could significantly increase the complexity of the system and make the system more vulnerable to potential errors, jeopardizing patient safety. The system […]

Transport Network Orchestration for End-to-End Multilayer Provisioning Across Heterogeneous SDN/OpenFlow and GMPLS/PCE Control Domains

A multidomain optical transport network composed of heterogeneous optical transport technologies (e.g., flexi/fixed-grid optical circuit switching and optical packet switching) and control plane technologies (e.g., centralized OpenFlow or distributed GMPLS) does not naturally interoperate, and a network orchestration mechanism is required. A network orchestrator allows the composition of end-to-end network service provisioning across multidomain optical […]

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 […]

MD2-NFV: The case for multi-domain distributed network functions virtualization

Motivated by the vision of Network Functions Virtualisation (NFV) spanning different administrativedomains, this position paper makes the case for multi-domain, distributed NFV (MD2-NFV). To this end, we present MD2-NFV as a natural evolution of the NFV paradigm to deliver a distributed deployment of Virtualized Network Functions (VNFs) as a service. By means of three motivating use case […]

Designing a passive star optical network for the India-based Neutrino Observatory

The India-based Neutrino Observatory (INO) uses an iron calorimeter (ICAL) as the neutrino detector. The ICAL consist of 28, 800 resistive plate chambers (RPCs) that generate event data at ~ 650 kbps, for an aggregate of 18 Gbps at the backend. Implementation of a triggerless detection scheme will increase this by a factor of 20. We describe […]

SDN and ForCES based optimal network topology discovery

Software-defined Networking proposes an alternative paradigm on network programmability based on the separation of control and forwarding planes. Discovering network elements in a dynamic and optimized fashion, able to cope with the ever-growing network traffic, is a key requirement for SDN networks, in order to ensure a data center’s robustness and manageability. OpenFlow’s approach for […]

Minimizing resource protection in IP over WDM networks: Multi-layer shared backup router [invited]

Optical networks and Internet Protocol/Multi-Protocol Label Switching (IP/MPLS) based networks have been traditionally designed and operated by separate departments of network operators. Likewise, both layers have always represented different business areas for system providers, which maintain different product lines for each of them. However, network operators have an IP/ MPLS over WDM architecture. The main […]

Wireless Sensor Networks for Condition Monitoring in the Railway Industry: A Survey

In recent years, the range of sensing technologies has expanded rapidly, whereas sensor devices have become cheaper. This has led to a rapid expansion in condition monitoring of systems, structures,vehicles, and machinery using sensors. Key factors are the recent advances in networking technologies such as wireless communication and mobile ad hoc networking coupled with the technology to […]