This paper presents a novel class-based fair code allocation (CFCA) protocol to support delay and rate guarantees for realtime flows and to provide fairness for non-real-time flows on the downlink of WCDMAand VSF-OFCDM-based cellular networks. CFCA not only assigns bandwidth dynamically to different flows but also determines those appropriate OVSF codes whose assignment results in the minimum o...

The AQUILA project defines and implements a QoS architecture for dynamic end-to-end service provisioning in IP networks. This paper presents the distributed QoS measurement architecture (DMA) designed as a part of AQUILA. The scope of QoS measurement in AQUILA is the evaluation and validation of the AQUILA architecture and the support of the AQUILA resource control mechanisms. The measurement m...

The paper deals with simulation of congested road networks through dynamic traffic assignment models and presents a new quasi-dynamic traffic assignment model that improves realism and effectiveness of both usual static traffic assignment models and other quasi-dynamic models recently introduced in the literature, as it simulates flow progression onto the network by moving link flows according ...

The dynamic topology design is one of the important steps for the design of an overlay network. Traffic characteristic and volume, and behavior of nodes are the main issues that affect the performance of overlay networks, and have to be considered in designing a good topology. In this paper, we study the problem of designing the dynamic overlay topology based on estimating and predicting the Or...

We analyze the global pharmaceutical industry network using a unique database that covers strategic transactions (i.e. alliance, financing and acquisition collaborations) for the top 90 global pharmaceutical firms and their ego-network partnerships totaling 4735 members during 1991-2012. The network evolution is traced via a novel method based on the concept of dynamicity that quantifies indivi...

Modern society could hardly function without the largescale, network-centric information systems that pervade government, defense, and industry. These systems exhibit shifting boundaries, often-unknown component behavior, constantly varying function and usage, and pervasive asynchronous operations. Their complexity challenges intellectual control, and their survivability has become an urgent pr...

The irrational use of limited network resources in conjunction with the unpredictable nature of traffic load injection in wireless multimedia sensor networks (WMSN) may lead to congestion. Traditional transmission schemes were not designed for supporting prioritized QoS, especially not for guaranteeing strict QoS required by real-time services such as voice and video. To overcome these deficien...

In order to detect violations of end-to-end service level agreements (SLA) and to isolate trouble links and nodes based on a unified framework, managers of a service provider network need to gather Quality of Service (QoS) measurements from multiple nodes in the network. For a network carrying over thousands of flows with end-toend SLAs, the information exchanged between network nodes and a cen...