Atay Ozgovde

Atay Ozgovde
Boğaziçi University · Department of Computer Engineering

PhD

About

46
Publications
32,392
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
1,741
Citations
Additional affiliations
September 2002 - February 2009
Boğaziçi University
Position
  • Research Assistant
December 2009 - present
Galatasaray University
Position
  • Professor (Assistant)
September 2002 - March 2009
Boğaziçi University
Position
  • Research Assistant

Publications

Publications (46)
Preprint
Full-text available
Air components, including UAVs, planes, balloons, and satellites have been widely utilized since the fixed capacity of ground infrastructure cannot meet the dynamic load of the users. However, since those air components should be coordinated in order to achieve the desired quality of service, several next-generation paradigms have been defined incl...
Article
Full-text available
Unmanned Aerial Vehicles (UAVs) are a major component in next-generation network architecture proposals, playing a critical role in problems like dynamic capacity enhancement, user coverage, and task offloading. When smart utilization of the UAVs is missing, these proposals may require sophisticated approaches, including the deployment of additiona...
Preprint
Full-text available
Earthquakes are one of the most destructive natural disasters harming life and the infrastructure of cities. After an earthquake, functioning communication and computational capacity are crucial for rescue teams and healthcare of victims. Therefore, an earthquake can be investigated for dynamic capacity enhancement in which additional resources are...
Preprint
Full-text available
There is an ever-growing race between what novel applications demand from the infrastructure and what the continuous technological breakthroughs bring in. Especially after the proliferation of smart devices and diverse IoT requirements, we observe the dominance of cutting-edge applications with ever-increased user expectations in terms of mobility,...
Article
The improvements in the edge computing technology pave the road for diversified applications that demand real-time interaction. However, due to the mobility of the end-users and the dynamic edge environment, it becomes challenging to handle the task offloading with high performance. Moreover, since each application in mobile devices has different c...
Preprint
The improvements in the edge computing technology pave the road for diversified applications that demand real-time interaction. However, due to the mobility of the end-users and the dynamic edge environment, it becomes challenging to handle the task offloading with high performance. Moreover, since each application in mobile devices has different c...
Article
A wide variety of novel services have been envisioned lately due to wearable gadgets, autonomous vehicles, and IoT applications. These services cannot directly be implemented using centralized cloud computing infrastructure due to large Wide Area Network (WAN) delays. Recently, edge computing is proposed to comply with the requirements of these ser...
Article
The Internet of Vehicles (IoV) vision encompasses a wide range of novel intelligent highway scenarios that rely on vehicles with an ever-increasing degree of autonomy and the prospect of sophisticated services like e-Horizon and cognitive driving assistance. The self-driving vehicle, on the other hand, entails a new passenger profile where sophisti...
Article
Failures in networks result in service disruptions which may cause deteriorated Quality of Service (QoS) for the end-users. Since SDN is becoming the mainstream paradigm for networks, implementation of a robust fault tolerance scheme for SDN-based networks is crucial. Existing SDN data plane fault tolerance approaches can be classified as reactive...
Preprint
Full-text available
Failures in networks result in service disruptions which may cause deteriorated Quality of Service (QoS) for the end users. Since SDN is becoming the mainstream paradigm for networks, implementation of a robust fault tolerance scheme for SDN-based networks is crucial. Existing SDN data plane fault tolerance approaches can be classified as reactive...
Article
The proliferation of portable devices with a wide spectrum of sensing capabilities, together with commercial availability, has made practical wearable computing applications a reality. This article focuses on efforts to make portable devices energy efficient by incorporating an intelligent dynamic energy management scheme so the overall effect on t...
Article
The popularity of traditional network services and web content is succeeded by the recent trend in customized services proliferated by the smart devices and gadgets. Fall-risk assessment, augmented reality, ECG (electrocardiography) monitoring, virtual reality-based gaming and similar services are driven through data generated by multi-modal sensor...
Article
Edge computing is based on the philosophy that the data should be processed within the locality of its source. Edge computing is entering a new phase where it gains wide acceptance from both academia and the industry as the commercial deployments are starting. Edge of the network presents a very dynamic environment with many devices, intermittent t...
Chapter
Full-text available
This chapter discusses two key challenges: networking and management in federating edge deployments. Additionally, it considers resource and modeling challenges that will need to be addressed for a federated edge. The chapter discusses potential avenues for resolving the networking challenges. Throughout the chapter, the general term edge refers to...
Article
Full-text available
A large spectrum of healthcare applications, ranging from continuous blood sugar level monitoring to sleep apnea detection, are nowadays facilitated by modern mobile gadgets. Wearable and ambient sensors generate enormous amounts of physiological data that demand high computation power for real-time processing and large storage area for recording t...
Article
Edge computing is a fast growing field of research that covers a spectrum of technologies bringing the cloud computing services closer to the end user. Growing interest in this area yields many edge computing approaches that need to be evaluated and optimized. Experimenting on the real cloud environments is not always feasible due to the operationa...
Article
Full-text available
This book chapter considers how Edge deployments can be brought to bear in a global context by federating them across multiple geographic regions to create a global Edge-based fabric that decentralizes data center computation. This is currently impractical, not only because of technical challenges, but is also shrouded by social, legal and geopolit...
Article
Full-text available
In this paper, we present the ARService framework which is a crowd-sourced mobile sensing system with an online activity recognition module running on a smartphone. The system consists of a mobile application and a server part. The application logs data from sensors, particularly motion sensors, available on smartphones, data about the phone state,...
Article
Full-text available
A typical pervasive monitoring system like a smart building depends on an infrastructure composed of hundreds of heterogeneous wireless sensor devices. Managing the energy consumption of these devices poses a challenging problem that affects the overall efficiency and usability. Existing approaches for sensor energy consumption typically assume a s...
Article
Full-text available
A novel paradigm that changes the scene for the modern communication and computation systems is the Edge Computing. It is not a coincidence that terms like Mobile Cloud Computing, Cloudlets, Fog Computing and Mobile-Edge Computing are gaining popularity both in academia and industry. In this study, we embrace all these terms under the umbrella conc...
Conference Paper
As the usage of the mobile devices increases, the user expectations for the performance of the smart applications grow as well. One of the basic criteria of the performance is the seamless user experience. Edge Computing approaches are becoming popular for supporting real time applications for which the traditional cloud based solutions do not suff...
Conference Paper
Edge Computing is a fast growing field of research covering a spectrum of technologies such as Cloudlets, Fog Computing and Mobile Edge Computing (MEC). Edge Computing involves technically more sophisticated setup when compared with the pure Cloud Computing and pure Mobile Computing cases since both computational and network resources should be con...
Conference Paper
Full-text available
Concerning energy consumption and monitoring architectures, our goal is to develop a sustainable declarative monitoring architecture for lower energy consumption taking into account the monitoring system itself. Our second is to develop theoretical and practical tools to model, explore and exploit heterogeneous data from various sources in order to...
Article
Full-text available
Concerning energy consumption and monitoring architectures, our goal is to develop a sustainable declarative monitoring architecture for lower energy consumption taking into account the monitoring system itself. Our second is to develop theoretical and practical tools to model, explore and exploit heterogeneous data from various sources in order to...
Conference Paper
Full-text available
High energy consumption of sensor devices is a major problem in smart building systems, since it strongly impacts the system lifetime. However, existing approaches are often fitted to a single monitoring application and rely on static configurations for sensor devices: optimization of their acquisition and transmission frequencies to actual multipl...
Conference Paper
Smart building management systems become very popular research topics due to high energy consumption of buildings in developed countries. Proposed approaches in the literature commonly focus on smart building energy management systems to improve this high consumption and on network communications between deployed devices. However, these approaches...
Article
Ambient Intelligence is one of the research area where wireless sensor devices are commonly used. Main idea of these applications is to monitor and recognize people's indoor or outdoor activities. In this study, we focus on one of the major problem of WSN which is energy consumption in a different way from the existing approaches in the literature....
Article
Full-text available
Smart phone platforms, equipped with a rich set of sensors enable mobile sensing applications that support users for both personal sensing and large-scale community sensing. In such mobile sensing applications, the position/placement of the phone relative to the user body provides valuable context information. For example, in physical activity reco...
Conference Paper
The use of smart phones and similar devices are increasing day by day and mobile devices are moving towards becoming the mainstream computing hardware. In parallel, the number of mobile applications is increasing exponentially. Besides the many advantages of being mobile, in these applications limited battery power is a fundamental constraint. With...
Conference Paper
Activity recognition (AR) or in other words context recognition is an active area of research in the domain of pervasive and mobile computing that has direct applications about life quality and health of the users. Related studies aim to classify different daily human activities with high accuracy rates using various types of sensors. Becoming a su...
Conference Paper
Full-text available
Concepts such as energy dependence, random deployment, dynamic topological update, self-organization, varying large number of nodes are among many factors that make WSNs a type of complex system. However, when analyzing WSNs properties using complex network tools, classical topological measures must be considered with care as they might not be appl...
Article
Full-text available
Visual capability introduced to Wireless Sensor Networks (WSNs) render many novel applications that would otherwise be infeasible. However, unlike legacy WSNs which are commercially deployed in applications, visual sensor networks create additional research problems that delays the real world implementations. Conveying realtime video streams over r...
Conference Paper
In recent years, there has been a significant increase in the number and variety of application scenarios studied under the m-health (mobile health) domain. While this multitude of approaches enrich m-health based solutions, lack of widely accepted tools and platforms for their evaluation makes it difficult to draw generally applicable conclusions...
Conference Paper
Full-text available
With their ease of installation, infrastructureless mode of operation and flexible deployment style, Video Surveillance Sensor Networks (VSSNs) provide more opportunities than legacy surveillance methods for applications such as habitat monitoring and border surveillance. We argue that events created in the coverage area of a VSSN are the applicati...
Article
Network lifetime is a novel performance metric which is derived in need to evaluate the networks that are composed of nodes with non-replenishable energy sources. Wireless Sensor Networks (WSNs) are the primary examples of such networks, in which elongating the network lifetime is the main concern. Optimal WSN design is highly dependent on the appl...
Conference Paper
Full-text available
Visual data carried on video sensor networks (VSNs) creates unique challenges due to the limited hardware of the sensors. In this paper, we study the capabilities of VSNs using currently available technology by investigating how the duty cycle of the sleep schedule and the frame rate affect the overall performance of a VSN. The trade-off between se...
Conference Paper
Full-text available
Wireless Sensor Networks (WSNs) give rise to a new networking paradigm in which energy efficiency is a high priority goal. A direct measure of the energy efficiency is the network lifetime which WSN proposals strive to extend. To correctly quantify the lifetime, the metric must be defined in an application dependent manner. In this paper, we propos...

Questions

Question (1)
Question
In our research, we sometimes come across with the need to modify Openflow to demonstrate the effectiveness of our approaches. P4 language seems like a possible candidate to achieve this. (Judging with what is written on the official site:  P4 lets you tell the switch how to process packets and auto-generates an API connecting the control plane and the forwarding plane. So, a P4 program could configure a switch to look like an OpenFlow 1.0 switch, or an OpenFlow 1.4 switch, or something else entirely. )
At first, I thought many people should have already done that (with similar goals in mind), however I couldn't see a major opensource activity that provides plain or modified openflow versions implemented in P4. Is this because P4 community is more interested in non-openflow related issues or is there an implementation barrier/difficulty involved in replicating full openflow functionality using P4?
I'd be glad to know, If anyone is aware of a P4 activity that somehow implements openflow functionality.

Network

Cited By