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By Type By Year By Research Group | Catch-up TV has revolutionised the watching habits, as it provides users the opportunity to watch programs at their preferred time and place. With the increasing offer of TV content, it is evident that there is a need for personalised recommendation ... In this paper, a cooperative two-hop communication scheme, together with opportunistic relaying (OR), is applied within a mobile wireless body area network (WBAN). Its effectiveness in interference mitigation is investigated in a scenario where there ... This paper presents a case for the adoption of an information-centric architecture for a global disaster management system. Drawing from a case study of the 2010/2011 Queensland floods, we describe the challenges in providing every participant with ... Modern mobile devices comprise multiple interfaces for heterogeneous network technologies. However, currently implemented mechanisms to decide which one(s) to use and distribute application flows accordingly (i.e., solving the multihomed flow ... This paper studies the information-theoretic secrecy performance in large-scale cellular networks based on a stochastic geometry framework. The locations of both base stations and the mobile users are modeled as independent two-dimensional Poisson point ... This paper addresses the important goal of quantifying the threat of linking external records to public Online Social Networks (OSN) user profiles, by providing a method to estimate the uniqueness of such profiles and by studying the amount of information... The acquisition of accurate user models is challenging and aggravates the task of generating accurate video recommendations. In this paper, we propose a novel concept of deep user modeling, i.e., modeling of user emotions over the course of watching the ... The Moana network infrastructure draws on well-adopted practices from the database and software engineering communities to provide a robust and expressive information sharing service using a hypergraph-based network indirection. Our proposal is twofold. ... In this paper, we investigate how the concept of differential privacy can be applied to the field of Intelligent Transportation Systems (ITS), focusing on the protection of Floating Car Data that is stored and processed in central Traffic Data Centers. ... Deployment of public wireless access points (also known as public hotspots) and the prevalence of portable computing devices has made it more convenient for people to access Internet on the road. On the other hand, it also generates large privacy ... Many wireless network protocols and algorithms rely on estimations of the link capacity in order to make informed decisions on routing data packets, selection of the optimal transmission rate, flow and admission control. In this paper we present an ... With more people accessing Online Social Networks (OSN) using their mobile devices, location-based features have become an important part of the social networking. In this paper, we present the first measurement study of a new category of location-based... Adaptations of context-aware applications do not always result in behaviours that users expect, due to imperfect sensing of context information and variability in human preferences, etc. This can negatively impact the user experience of applications and ... Wireless mesh networks are well-recognised by their self-organising properties. End-to-end routing protocols are primarily responsible for achieving these advanced features. However, wireless link failures can cause a route to be invalidated and ... Computer networks support many of the services that our society relies on. Therefore, ensuring their resilience to faults and challenges, such as attacks, is critical. To do this can require the execution of resilience strategies that perform dynamic ... The use of free mobile services and applications (commonly referred as apps) are becoming increasingly popular. Such services and apps are generally monetized by means of third party advertising. The app developers and ad networks which provide the ... In this paper, we study the dependency between MapReduce configuration parameters and network load of fixed-size MapReduce jobs during the shuffle phase; then we propose an analytical method to model this dependency. Our approach consists of three key ... Abstract—Advanced computing and sensing capabilities of smartphones provide new opportunities for personal indoor positioning. A particular trend is to employ human activity recognition for autonomous calibration of pedestrian dead reckoning systems ... In this paper an efficient energy curtailment scheme is studied, which enables the power users of a smart grid network to decide on the reduction in energy supplied to them in the event of a power outage in the system. Considering the advantages of a ... ICMP is a key protocol to exchange control and error messages over the Internet. An appropriate ICMP’s processing throughout a path is therefore a key requirement both for troubleshooting operations (e.g. debugging routing problems) and for several ... Most conventional features used in speaker recognition are based on Mel Frequency Cepstral Coefficients (MFCC) or Perceptual Linear Prediction (PLP) coefficients. Recently, the Power Normalised Cepstral Coefficients (PNCC) which are computed based on ... Routing protocols are used to discover, maintain, and repair routes between pairs of nodes in wireless ad-hoc networks. In order to handle dynamic network topologies caused by node mobility, many routing protocols are designed with multiple features ... Reliable in-order multi-path data transfer under asymmetric heterogeneous network conditions has known prob- lems related to receiver's buffer blocking, caused by out of order packet arrival. Consequently, the aggregate capacity from multiple paths, which... Network propagated malware such as worms are a potentially serious threat, since they can infect and damage a large number of vulnerable hosts at timescales in which human reaction is unlikely to be eective. Research on worm detection has produced many ... In this paper, we examine mobile users behavior and their corresponding video viewing patterns from logs extracted from the servers of a large scale VoD system. We concentrate on the analysis of the main discrepancies that might exist when users access ... With the ever increasing usage of handheld devices and vast deployment of wireless networks, we observe that it is possible to collect data from mobile devices and reveal personal relationships of their owners. In the paper, we exploit the hidden ... Node mobility, signal fading and interference introduce dynamics in wireless channels. In 802.11 wireless networks there are several transmission rates that can be adaptively selected by the MAC-layer rate control mechanisms to cater for various channel ... This paper presents conditional probabilistic modeling suitable to characterize the temporal variation of links in wireless body area networks (BAN); according to short, medium and long term fading characteristics. The approach captures first and second ... A typical Body Area Network (BAN) involves multiple on- body sensors exchanging information with a central gateway, forming a star topology network. The characterization of sensor-to-gateway wireless links is clearly important in sim- ulation, as ... ETX (Expected Transmission Count) is shown to be the best link metric in terms of higher throughput for wireless multi-hop network with stationary-nodes having single radio. Some recent work, however, shows that ETX may exhibit high sensitivity to ... In this paper we present a rigorous analysis of the Ad hoc On-Demand Distance Vector (AODV) routing protocol using a formal specification in AWN (Algebra for Wireless Networks), a process algebra which has been specifically tailored for the modelling ... Distributed social networking services show promise to solve data ownership and privacy problems associated with centralised approaches. Smartphones could be used for hosting and sharing users data in a distributed manner, if the associated high ... This paper characterizes a recently proposed anonymous file sharing system, OneSwarm. This characterisation is based on measurement of several aspects of the OneSwarm system such as the nature of the shared and searched content and the geolocation and ... Performance of multipath transport protocols is known to be sensitive to path asymmetry. The difference between each path in terms of bandwidth, delay and packet loss has a potential to significantly decrease the overall performance of a data flow carried... In this paper a distributed transmit beamforming technique is proposed for time-varying wireless communication channels that improves the signal gain at the receiving terminal, and thus yielding an enhanced signal-to-interferenceplus-noise ratio. In this ... One highly-scalable approach to content delivery is to harness the upload bandwidth of the clients. Peer-assisted content delivery systems have been shown to effectively offload the servers of popular files, as the request rates of popular content ... The Open Connectivity Services (OConS) framework is cur- rently being defined within the framework of the SAIL project. Its main objective is to offer adaptive connectivity services to seamlessly address user and service requirements while complying with... We propose to implement approaches to solve the multihomed flow management problem in the OPNET simulator. We formulate various decision methods as binary integer programming problems and use them (with the CPLEX solver) to drive the network selection ... In this paper, coexistence of multiple mobile wireless body area networks (WBANs), where there is no coordination between WBANs, is investigated for the case where the WBAN-of-interest employs cooperative communications. A decode-and-forward protocol ... We present a solution to evaluate the performance of transport protocols as a function of link layer reliability schemes (i.e. ARQ, FEC and Hybrid ARQ) applied to satellite physical layer traces. As modelling such traces is complex and may require ... It is known that speaker-specific information is distributed non-uniformly in the frequency domain. Current speaker recognition systems utilize auditory-motivated scales for extracting acoustic features. These scales, however, are not optimised to exploit... With the proliferation of cloud services, cloud-based systems can become a cost-effective means of on-line content delivery. In order to make best use of the available cloud bandwidth and storage resources, content distributors need to have a good ... This paper presents a practical and low-cost approach to estimate the maximum achievable wireless link bandwidth based on the prevailing link conditions in an IEEE 802.11 network. This approach works by observing the number of bits successfully delivered... In this paper, we examine web user tracking capabilities of the three major global Online Social Networks (OSNs). We study the mechanisms which enable these services to persistently and accurately follow users web activity, and evaluate to which extent ... We present an empirical study of personal information revealed in public profiles of people who use multiple Online Social Networks (OSNs). We first consider the number of publicly available attributes in such profiles based on various demographics and ... Video dissemination through sites such as YouTube can have widespread impacts on opinions, thoughts, and cultures. Not all videos will reach the same popularity and have the same impact. Popularity differences arise not only because of differences in ... In this paper, we present an approach to model and predict the total CPU utilization –in terms of CPU clock tick– of MapReduce applications for almost fixed-sized input data. Our approach has two key phases: profiling and modelling. In the profiling phase... Workload consolidation, sharing physical resources among multiple workloads, is a promising technique to save cost and energy in cluster computing systems. This paper highlights a few challenges of workload consolidation for Hadoop as one of the current ... We consider stored content being streamed to a resource poor device (such as a sensor node or a mobile phone), and address the issue of authenticating such content in real-time at the receiver. Per-packet digital signatures incur high computational cost, ... Web-based catch-up TV services allow users to watch programs at their favoured time and device and are revolutionizing the TV watching habits. With the increasing demand for catch-up TV, it has become evident that there is a need for personalised ... Personalized services, especially targeted advertising, are blossoming in the cloud. In targeted (or behavioural) advertising, users' behaviours are tracked over time in order to customize served ads to their interests. This creates serious privacy ... In this paper we propose FPC — a Force-based layout and Path Compressing routing schema for scale-free network. As opposed to previous work, our algorithm employs a quasi-greedy but self-organized and configuration-free embedding method — force-based ... Active service discovery in WiFi, makes wireless station broadcast their WiFi fingerprint, i.e. the SSIDs of their preferred wireless networks. Our hypothesis is that social links between devices owner can be identified by exploiting the information ... In 802.11-based wireless networks, the ability to accurately predict the impact of interference via the use of an interference model is essential to better and more efficient channel assignment algorithms and data routing protocols. Recently, there have ... With the introduction of standards such as DSRC and WAVE, vehicular ad hoc networks (VANET) are being considered as candidates to improve road safety. Safety applications developed on top of VANET enable vehicle and driver improved awareness of the road ... Video streaming for heterogeneous types of devices, where nodes have different devices characteristics in terms of computational capacity and display, is usually handled by encoding the video with different qualities. This is not well suited for ... In the emerging paradigm of pervasive computing, applications change their behaviors in response to their environmental context, which is provided by the smart objects in the Internet of Things (IoT). Due to the inherent heterogeneity of physical world ... Social networking systems originally emerged as tools for keeping up with the daily lives of friends and strangers. They have established themselves as valuable resources and means to satisfy information needs. The challenge with information seeking ... Greedy forwarding is an efficient and scalable routing algorithm for wireless networks. To make greedy forwarding succeed on a network, many research efforts assign virtual coordinates to nodes in the network to obtain a greedy embedding. Different from ... We consider content being streamed to a resource-poor de- vice (such as a sensor node or a mobile phone), and address the issue of authenticating such content in real-time at the receiver. Per-packet digital signatures incur high computa- tional cost, ... The constantly increasing diversity of the infrastructure that is used to deliver Internet services to the end user, has created a demand for experimental network facilities featuring heterogeneous resources. Therefore, federation of existing network ... A new class of erasure codes for delay-constraint applications, called on-the-fly coding, have recently been introduced for their improvements in terms of recovery delay and achievable capacity. Despite their promising characteristics, little is known ... The increased processing power and storage capacity of in-home and mobile computing devices has motivated their inclusion in distributed and cloud computing systems. The resulting diverse environment creates a strong requirement for secure computations, ... The ability to accurately estimate wireless link quality is critical to the performance of routing protocols and rate adaptation algorithms in wireless mesh networks. Current link quality estimation methods utilize the packet delivery ratio (PDR) ... On the Uplink Capacity and Coverage of Relay-Assisted UMTS Cellular Network with Multiuser Detection Capacity and Coverage are the two major concerns for the wireless operators to deploy cellular networks. This paper investigates the uplink capacity and coverage of relayassisted UMTS network when multiuser detection techniques are employed at both ... Workload characterization is important for understanding how systems and services are used in practice and to help identify design improvements. To better understand the longitudinal workload dynamics of chunk-based content delivery systems, this paper... Transmission of signals using multiple antennas can significantly improve the energy efficiency of a wireless network, and the proper alignment of the transmitted signals' phases at the receiver is one of the key factors so this efficiency improvement can... Characterization of cooperative communications, for the `everyday' body-area-network (BAN) wireless channel is presented. Performance analysis is given based on many hours of empirical data measured on five adult subjects. A decode-and-forward protocol is... We present a predictor for real Body-Area-Network (BAN) channels that is accurate for up to 2 seconds, even with a nominal channel coherence time of 500ms. The predictor utilizes the partial-periodicity of measured BAN channels using the previous 4 ... Adaptation decisions made by context-aware applications on behalf of users are based on evaluations of current context and preferences of users. This context information is imperfect by nature and can cause applications to behave in ways that users do not... With the rising penetration of smartphones in the consumer market, mobile multimedia content is becoming the dominant form of information that people produce and consume on a daily basis. In this paper we present a wireless multi-hop video streaming ... Estimating the geographical position of Internet hosts from their IP addresses has been an interesting problem, with both commer- cial and academic applications. While many studies have focused on the IP geolocation problem in general, very few have ... Heterogeneous cellular networks consisting of microcell, picocell, femtocell, distributed antennas and relays codeployed in space and frequency with carefully planned towermounted base stations, increase the complexity of the cellular network structure, ... This paper focuses on mechanisms that support the reliable transfer of data for medical applications in wireless Body Area Networks (BANs), in particular, for the monitoring by sensors of vital life signs. Recent studies on path-loss models for BANs show ... In this paper, utilizing data funneling and distributed beamforming, we propose a novel cooperative cross-layer transmission scheme to reduce the transmit energy of sensor nodes while communicating over long distances in a wireless sensor network. We show... In this paper, a game theoretic scheme is proposed to study power control in a multi-source (transmitting to multiple clusters) wireless sensor network. A game where each sensor chooses it's transmit power independently to achieve a target signal to ... A large contributor to the growing Internet traffic is user generated content shared via online social networking websites. Our insight is that these websites can reveal valuable information that can be used in content delivery networks for better caching... Peer-assisted systems that use BitTorrent-like peer-to-peer protocols can potentially support on-demand streaming of popular media files to large numbers of clients. In these systems, the policy used for exchanging content pieces among the participating ... Heterogeneous cellular networks consisting of microcell, picocell, femtocell, distributed antennas and relays co-deployed in space and frequency with carefully planned tower-mounted base stations, increase the complexity of the cellular network structure,... Femtocells are assuming an increasing important role to extend the cellular network coverage and provide high speed data service for indoor environments. To cope with the extreme interfering cases in the WCDMA uplink scenario, Home NodeB (HNB) receivers ... The 802.11 wireless networking standard has several transmission rates which can be adaptively selected by the MAC layer to cater for various channel conditions. Such dynamic adaptations can improve per-hop performance in wireless networks by enhancing ... In this paper, we provide mathematical and experimental proofs that current strategy of declaring a link down in the HELLO protocol, which is widely used for neighborhood discovery in wireless multihop networks, when a specific number of HELLO losses are ... Road safety is one of the most important emerging applications envisioned for Vehicular Ad hoc Networks (VANETs). Generally, such applications involve the broadcast of safety messages, consisting of beacons transmitting vehicles' state (e.g. position and ... We investigate the effect of radio modeling on the simulation results of low-power wireless networks. In particular we focus on the modeling of carrier sensing and state transition delays and describe how these aspects of low-power radios are captured in ... Vehicular Ad-Hoc Networks (VANETs) are wireless networks with mobile nodes (vehicles) which connect in an ad-hoc manner. Many vehicles use the Global Positioning System (GPS) to provide their locations. However the inaccuracy of GPS devices leads to some ... Vehicular Ad~Hoc Networks (VANETs) allow vehicles to communicate with each other using wireless means and thus connect them in a very dynamic wireless network. The number of vehicles equipped with GPS devices continues to grow, but the accuracy of GPS ... The increasing use of smartphones with integrated Wi-Fi interface presents opportunities for broadcasting multimedia streams or contents using wireless ad hoc networks, particularly in crowd scenarios like stadiums or musical concerts. Since most of ... Popularity dynamics of user-generated videos available from video-sharing services such as YouTube are of interest for myriad purposes including design of content distribution, content storage, and advertisement systems. Studying these dynamics, ... We present a comprehensive, longitudinal characterization study of the File Hosting Service (FHS) ecosystem using HTTP traces collected from a large campus network over a one year period. We analyze in detail the top five services in terms of traffic ... This paper describes work in progress towards an automated formal and rigorous analysis of the Ad hoc On-Demand Distance Vector (AODV) routing protocol, a popular protocol used in ad hoc wireless networks. We give a brief overview of a model ... It is widely agreed that the Internet needs to become more resilient to a range of challenges that can seriously impact the normal operation of the network and networked services. Challenges include malicious attacks, misconfigurations, accidental faults ... With the growing popularity and capabilities of mobile devices, peer-to-peer networking among such devices is increasingly of interest for mobile content sharing. One of the major challenges in practical use of MP2P is the trust among peers. Traditionally... We propose to demonstrate a mobile server assisted P2P system for on-demand video streaming. Our proposed solution uses a combination of 3G and ad-hoc Wi-Fi connections, to enable mobile devices to download content from a centralised server in a way that ... Vehicular traffic density is a key factor in determining the behavior of radio overlapping and thus impacts performance of data and safety message communication in Vehicular Ad hoc Networks (VANETs). In this paper, we propose a novel density model for ... We consider the problem of network selection and flow distribution for a multihomed mobile device. We argue the benefits of a holistic approach which considers user- and application-centric metrics such as quality, energy consumption and monetary cost, ... An increasing portion of traffic in mobile networks comes from users creating content and uploading it to the Internet to share it. The capacity of mobile networks is a limited resource and uploading high resolution content consumes a large part of it. We... We consider a body area network (BAN) setting in which sensor nodes send data to a common hub regularly on a TDMA basis, as defined by the emerging IEEE 802.15.6 BAN standard. Our previous work has established the benefits of variable TDMA scheduling in ... We investigate the potential of wireless sensor networks to monitor the structural health of bridges. Needing to explore different sensing, networking, and distributed computing approaches in real conditions, we are led to the creation of an onsite ... The oil and gas industries have been great consumers of parallel and distributed computing systems, by frequently running technical applications with intensive processing of terabytes of data. By the appearance of cloud computing which gives the ... In this paper, we describe our work towards on a novel n-tuple store based on the Kademlia DHT that supports multidimensional storage and multi get(pattern) query op- eration. We present our algorithm behind multi get and preliminary results on its ... APCO Project 25(P25)radio networks are perhaps the most widely-deployed digital radio technology currently in use by emergency first-responders across the world. This paper presents the results of an investigation into the security aspects of the P25 ... This paper discusses the advantages of using real experiments in networking lectures as opposed to simulation and tcpdump labs. Indeed, we claim that with the inclusion of networking to numerous curriculums the way to illustrate and assess in these ... With the availability of more powerful mobile de- vices and a variety of access networks, users are expecting more and more services whilst on the move. There have been many attempts develop methods of providing these types of services form a user as well... Peer-assisted content delivery systems can provide scalable download service for popular files. For mildly popular content, however, these systems are less helpful in offloading servers as the request rate for less popular files may not enable ... We propose a novel trust and probabilistic node selection mechanism for content distribution in mobile ad hoc networks, which aims to achieve trustworthy node selection and to preserve mobile node resources. The proposed mechanism is evaluated against ... We present Xstream-x264: a real-time cross-layer video streaming technique implemented within a well known open-source H.264 video encoder tool x264 for on-line video quality evaluation experiments. Xstream-x264 uses the transport protocol provided ... This article presents a comprehensive summary and recommendations towards the use of IREEL, an e-learning platform designed for network studies in CSE courses, based on our experience during a joint under and post graduate course. We found that our tool ... We consider a typical body area network (BAN)setting in which sensor nodes send data to a common hub regularly on a TDMA basis, as defined by the emerging IEEE 802.15.6 BAN standard. We explore variable TDMA scheduling techniques that allow the order of ... We propose a solution to mitigate the performance degradation and corresponding Quality of Experience (QoE) reduction caused by packet reordering for multimedia applications which utilise unreliable transport protocols like the Datagram Congestion ... Methods for transmit power control based on simple long-term channel prediction for the general body-area communications channel are presented. The power control methods are based on large sets of empirical every-day activity data. Numerous ... We use well-known algebraic concepts like semirings and matrices to model and argue about Wireless Mesh Networks. These networks are used in a wide range of application areas, including public safety and transportation. Formal reasoning therefore seems... In this paper, we study CPU utilization time pattern of applications on Mapreduce cluster. After extracting the pattern for several applications and keeping them in Reference database, we compare the CPU utilization time pattern of a new incoming ... Using Torrent Inflation to Efficiently Serve the Long Tail in Peer-assisted Content Delivery Systems A peer-assisted content delivery system uses the upload bandwidth of its clients to assist in delivery of popular content. In peer-assisted systems using a BitTorrent-like protocol, a content delivery server seeds the offered files, and active torrents ... We carry out a longitudinal study of evolution of small time- scaling behavior of Internet traffic on MAWI dataset spanning 8 years. MAWI dataset contains a number of anomalies which conflict in the correct identification of scaling behavior, and hence ... The technique of computationally analysing a program by searching for instances which causes the program to run in its worst-case time is examined. Concorde, the state-of-the-art Traveling Salesperson Problem (TSP) solver, is the program used to test our ... Network resilience strategies aim to maintain acceptable levels of network operation in the face of challenges, such as malicious attacks, operational overload or equipment failures. However, the manual configuration and deployment of ad-hoc security and ... Whilst dealing with topics that are more and more influenced by physical properties of the underlying media, the networking community still lacks a culture of strong and rigorous results verification. Indeed, as opposed to most of the science and ... A new approach to compare models for body area networks (BAN) that accommodates multiple links and multiple subjects is presented. The absolute measure described allows comparison across a spectrum of possible characterizations; ranging from ... This paper presents a portable and hardware-independent data-link layer design that adds cooperative retransmission support to the Linux kernel wireless SoftMAC implementation (mac80211). With cooperative retransmission, a unicast packet that is not... Content delivery networks (CDNs) have become a crucial part of the modern Web infrastructure. This paper studies the performance of the leading content delivery provider – Akamai. It measures the performance of the current Akamai platform and considers a ... Context-aware applications do not always adapt their behaviours in ways that users expect due to a variety of reasons. Applications that lack intelligibility are often incapable of offering explanations to users as to why they decided to adapt their ... Conventional layered protocols are not capable to handle the vagaries of Wireless Mesh Networks (WMN) such as rapidly changing wireless channel quality, battery power and network topology. Most WMN cross-layer proposals to overcome these problems ... Recently, there has been focus on augmenting Delay/Disruption Tolerant Networks (DTNs) with easily deployable stationary relay nodes making an unconnected infrastructure to facilitate the data delivery by increasing forwarding opportunities. Relay nodes ... Interference is a crucial factor that impacts the overall throughput performance of IEEE 802.11-based wireless networks. As such, understanding interference characteristics is essential towards the optimal management and operation of these networks. In ... Signal variation in Body Area Networks (BANs) is dominated by slow, macroscopic fading. The quantized (state) channel has long, and variable state-holding times. We motivate the use of a semi-Markov approach to model the quantized channel gain and show... One of the key challenges for routing protocols in wireless multi-hop networks is to deal with link failures, and to repair the routes in these situations. In the Ad-hoc On Demand Distance Vector (AODV) protocol, routes can either be repaired by ... Gossip-based protocols are one of the popular approaches to estimate aggregates in large scale distributed systems. In this paper, we propose a gossip-based asynchronous and robust protocol to compute aggregates. In our protocol, each node employs the ... We propose to demonstrate a cross-layer enhancement of DCCP/TFRC which allows the transport to better handle network mobility handovers and adapt faster to the capacity available in the new network. We argue Freeze-DCCP is well suited for real-time ... This papers presents an enhancement of a previously introduced e-learning platform. This update is based on the feedbacks from students and teachers who used it and the integration of a state of the art management framework. This enhancement allows ... Networking researchers using testbeds containing mobile nodes face the problem of measurement collection from disconnected nodes. We solve this problem efficiently by adding a proxy server to the Orbit Measurement Library (OML) to transparently bu ffer ... This paper considers the problem of adapting the BitTorrent protocol for on-demand streaming. BitTorrent is a popular peer-to-peer file sharing protocol that efficiently accommodates a large number of requests for file downloads. Two components of the... Computational experiments with P2PSAP, a self adaptive communication protocol for peer to peer distributed computing are presented and analyzed. P2PSAP can configure itself automatically in function of application requirements and topology changes by ... Data and service delivery have been historically based on “network centric” architectures, with datacentres being the focal sources. The amount of energy consumed by these datacentres has become an emerging issue for the companies operating them. Thus, ... Networking testbeds are playing an increasingly important role in the development of new communication technologies. Testbeds are traditionally built for a particular project or to study a specific technology. An alternative approach is to federate ... Repeatable experiments to study the performance or behavior of the modern wireless mobile adhoc network (MANET) systems such as a delay (or disruption) tolerant network (DTN) and its application is a challenging task. The best way to do this is by ... Pervasive communications are increasingly sent over mobile devices and personal digital assistants. This trend has been observed during the last football world cup where cellular phones service providers have measured a significant increase in multimedia ... Channel prediction, which predicts a future channel gain based on current and past observations, is very useful for power control and resource optimization in wireless communication systems. However, a low-complexity predictor with trustworthy ... This paper explains an idea of demand-supply balance for smart grids in which consumers are expected to play a significant role. The main objective is to motivate the consumers, by maximizing their benefit both as a seller and a buyer, to trade their ... This paper proposes a coverage-oriented femtocell network deployment scheme, in which the femtocell base stations (BSs) can decide whether to be active or inactive depending on their distances from the macrocell BSs. Specifically, as the areas close to ... In this paper, we study the process of information diffusion in a microblog service developing Galton-Watson-based model. Microblog services offer a unique approach to online information sharing allowing microblog users to forward messages to others. We... Characterization of cooperative switched combining (SwC), for the `everyday' wireless body area network (BAN) wireless channel, is presented. A decode-and-forward protocol is chosen for the on-body cooperative BAN. The outage probability of two and ... Mobile video streaming contributes a fast growing portion of mobile data traffic. This paper compares the cost and energy efficiency of streamed video with prefetching video using real usage data from a mobile video application. The usage data is combined... This paper addresses the important goal of quantifying the threat of linking external records to public Online Social Networks (OSN) user profiles, by providing a method to estimate the uniqueness of such profiles and by studying the amount of information... The scalability of routing architectures for large networks is one of the biggest challenges that the Internet faces today. Greedy routing, in which each node is assigned a locator used as a distance metric, recently received increased attention from ... There has been a renewed interest at the Internet Engineering Task Force (IETF) in using Less-than-Best Effort (LBE) methods for background applications. IETF recently published a RFC for Low Extra Delay Background Transport (LEDBAT), a congestion ... In this paper, we explore the relationship between information diffusion in microblog spheres and user interests towards web content. Specifically, we examine whether trending topics in Twitter and web interests represented by search queries statistics ... We present an NS-2 module, Physical Channel Access (PCA), to simulate different access methods on a link shared with Multi- Frequency Time Division Multiple Access (MF-TDMA). This technique is widely used in various network technologies, such as ... In this article, we assess the impact of link layer retrans- missions on TCP performance in the context of aeronautical commu- nications. We present the architecture of such network, the important channel access delays in this case and various ... We investigate the limitations of using dynamic taint analysis for tracking privacy-sensitive in- formation on Android-based mobile devices. Taint tracking keeps track of data as it propagates through variables, inter-process messages and files, by ... |