Tag Archive: 'ns3 tutorial'

Tackling the Increased Density of 5G Networks: The CROWD Approach

The significant growth in mobile data traffic and the ever- increasing user’s demand for high-speed, always connected networks continue challenging network providers and lead research towards solutions to enable faster, scalable and more flexible networks. In this paper we present the CROWD approach, a networking framework providing mechanisms to tackle the high densification and heterogeneity […]

Implementation of CPML for One-Step Leapfrog WCS-FDTD Method

In this letter, the convolutional perfectly matched layer (CPML) is modified and implemented for one-step leapfrog weakly conditionally stable finite-difference time-domain (WCS-FDTD) method. Since the WCS-FDTD method can be considered as an approximate factorization of the Crank—Nicolson scheme, the derived equations of CPML involve the calculation of auxiliary terms at two time steps which are […]

A Minimally Invasive 64-Channel Wireless μECoG Implant

Emerging applications in brain-machine interface systems require high-resolution, chronic multisite cortical recordings, which cannot be obtained with existing technologies due to high power consumption, high invasiveness, or inability to transmit data wirelessly. In this paper, we describe a microsystem based on electrocorticography (ECoG) that overcomes these difficulties, enabling chronic recording and wireless transmission of neural signals from […]

Adaptive Mechanism for Distributed Opportunistic Scheduling

Distributed opportunistic scheduling (DOS) techniques have been recently proposed for improving the throughput performance of wireless networks. With DOS, each station contends for the channel with a certain access probability. If a contention is successful, the station measures the channel conditions and transmits in case the channel quality is above a certain threshold. Otherwise, the station does […]

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 networkingtechnologies such as wireless communication and mobile ad hoc networking coupled with the technology to integrate devices. Wireless sensor networks (WSNs) can […]

JTangCSB: A Cloud Service Bus for Cloud and Enterprise Application Integration

Cloud and enterprise application integration (CEAI) is a new challenge as more enterprise applications migrate successfully to cloud environments. However, achieving CEAI properties such as multitenancy, cloud-level scalability, and environmental heterogeneity is nontrivial for enterprise applications originally built under the assumption of centralized management. A concrete implementation of the cloud service bus approach, called JTangCSB, addresses the […]

Peer-recognition and Performance in Online Crowdsourcing Communities

Recent advances in information technology bring significant changes to the nature of social interactions and information exchange. Physical face-to-face communications are slowly replaced by online virtual communities. Motivated by this phenomenon, this research investigates how voluntary community involvement and self-disclosure behavior impact a member’s peer-recognition and task performance within a virtual crowd sourcing competition community. We collected secondary […]

Dynamic Resource Discovery based on Preference and Movement Pattern Similarity for Large-Scale Social Internet-of-Things

Given the wide range deployment of disconnected delay-tolerant social Internet-of-Things (SIoT), efficient resource discovery remains a fundamental challenge for large-scale SIoT. The existing search mechanisms over the SIoT do not consider preference similarity and are designed in Cartesian coordinates without sufficient consideration of real-world network deployment environments. In this paper, we propose a novel resource discovery mechanism […]

A Unifying Model and Analysis of P2P VoD Replication and Scheduling

We consider a peer-to-peer (P2P)-assisted video-on-demand (VoD) system where each peer can store a relatively small number of movies to offload the server when these movies are requested. User requests are stochastic based on some movie popularity distribution. The problem is how to replicate (or place) content at peer storage to minimize the server load. Several variations of this replication problem have been studied recently with somewhat […]

From ID/locator split to ICN

In this paper we give some background to how the long-lasting discussion on separation of identifiers and locators in networking has influenced the Information-centric Networking (ICN) research. We start with a historical retrospect of the id/locator discussion. We then address the problems that have been fueling the discussion followed by a chronological walkthrough of a number of id/locator split ideas up tosome […]