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Sebastian Göndör

Sebastian Göndör
Telekom Innovation Laboratories / TU Berlin · Service-centric Networking

Dr.-Ing. Dipl.-Inform.

About

39
Publications
8,006
Reads
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250
Citations
Citations since 2016
25 Research Items
208 Citations
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201620172018201920202021202201020304050
201620172018201920202021202201020304050
201620172018201920202021202201020304050
Additional affiliations
January 2018 - present
Telekom Innovation Laboratories / TU Berlin
Position
  • Senior Researcher
March 2014 - July 2016
Telekom Innovation Laboratories / TU Berlin
Position
  • Project Manager
Description
  • Software Campus Project "Sonic"
February 2011 - December 2017
Telekom Innovation Laboratories / TU Berlin
Position
  • Researcher
Education
March 2014 - June 2018
Technische Universität Berlin
Field of study
  • Computer Science
April 2001 - December 2010
RWTH Aachen University
Field of study
  • Computer Science

Publications

Publications (39)
Thesis
Full-text available
Online Social Networks (OSN) have become an integral part of our everyday lives. We express ourselves, create and collect content such as images or videos, share content and information with our friends and colleagues, exchange messages, or keep track of what’s happening in the world. Yet, despite social communication being implicitly a distributed...
Conference Paper
Full-text available
As of today, web-based social communication platforms , such as WhatsApp, Twitter, or Facebook, are almost exclusively realized via centralized platforms, based on proprietary interfaces, protocols, and data formats. In consequence, even though social communication being a decentralized, peer-to-peer phenomenon, web-based communication today is imp...
Conference Paper
Full-text available
Self-sovereign Identity (SSI) powered by distributed ledger technologies enables more flexible and faster digital identification workflows, while at the same time limiting the control and influence of central authorities. However, a global identity solution must be able to handle myriad credential types from millions of issuing organizations. As me...
Preprint
Full-text available
Decentralized services and applications provide a multitude of advantages for their users, such as improved privacy, control, and independence from third parties. Anyhow, decentralization comes at the cost of certain disadvantages, such as increased application complexity or communication overhead. This aggravates the development and deployment of...
Preprint
Full-text available
p>Self-sovereign identity is the latest digital identity paradigm that allows users, organizations, and things to manage identity in a decentralized fashion without any central authority controlling the process of issuing identities and verifying assertions. Following this paradigm, implementations have emerged in recent years, with some having dif...
Conference Paper
Full-text available
Decentralized services and applications provide a multitude of advantages for their users, such as improved privacy, control, and independence from third parties. Anyhow, decentralization comes at the cost of certain disadvantages, such as increased application complexity or communication overhead.This aggravates the development and deployment of d...
Preprint
Full-text available
Self-sovereign identity is the latest digital identity paradigm that allows users, organizations, and things to manage identity in a decentralized fashion without any central authority controlling the process of issuing identities and verifying assertions. Following this paradigm, implementations have emerged in recent years, with some having diffe...
Preprint
Full-text available
Decentralized services and applications provide a multitude of advantages for their users, such as improved privacy, control, and independence from third parties. Anyhow, decentralization comes at the cost of certain disadvantages, such as increased application complexity or communication overhead. This aggravates the development and deployment of...
Preprint
Full-text available
Self-sovereign Identity (SSI) powered by distributed ledger technologies enables more flexible and faster digital identification workflows, while at the same time limiting the control and influence of central authorities. However, a global identity solution must be able to handle myriad credential types from millions of issuing organizations. As me...
Preprint
Full-text available
As of today, web-based social communication platforms , such as WhatsApp, Twitter, or Facebook, are almost exclusively realized via centralized platforms, based on proprietary interfaces, protocols, and data formats. In consequence, even though social communication being a decentralized, peer-to-peer phenomenon, web-based communication today is imp...
Conference Paper
Full-text available
Online Social Networks (OSN) have become an integral part of our everyday lives. We express ourselves, share content and information with our friends and colleagues, or exchange messages. Yet, despite social communication being implicitly a distributed, decentralized way of information exchange that does not require any central entity to supervise...
Presentation
Full-text available
Doctoral Defense Presentation Online Social Networks (OSN) have become an integral part of our everyday lives. We express ourselves, create and collect content such as images or videos, share content and information with our friends and colleagues, exchange messages, or keep track of what’s happening in the world. Yet, despite social communication...
Conference Paper
Full-text available
Online Social Networks (OSN) are mostly closed, proprietary services that disallow interoperability with other OSN services. In the area of decentralized OSN services, several protocols and services have been proposed that attempt to implement interoperability for distinct aspects of OSN services in heterogeneous federations of OSN services. In thi...
Chapter
Full-text available
In this chapter, the necessity for data portability and interoperability in the social web is discussed. User profi les in OSN services are bound to the OSN platform they were originally created in, while at the same time, interoperability of di fferent OSN services is not supported. While the General Data Protection Regulation (GDPR) of the EU man...
Conference Paper
Full-text available
Two of the defining elements of Social Networking Services are the social profile, containing information about the user, and the social graph, containing information about the connections between users. Social Networking Services are used to connect to known people as well as to discover new contacts. Current friend recommendation mechanisms typic...
Article
Full-text available
Cross-domain identity management remains a major challenge for potential WebRTC adopters. In order to provide a global web-based communication system, it is critical to locate the destination called party, map the identity to the user device, and provide mutual authentication for both caller and called party. In this paper, we present a novel ident...
Conference Paper
Full-text available
The upcoming WebRTC-based browser-to-browser communication services present new challenges for user discovery in peer-to-peer mode. Even more so, if we wish to enable different web communication services to interact. This paper presents Identity Mapping and Discovery Service (IMaDS), a global, scalable, service independent discovery service that en...
Conference Paper
Full-text available
As of today, communication habits are shifting towards Online Social Network (OSN) services such as WhatsApp or Facebook. Still, OSN platforms are mostly built in a closed, proprietary manner that disallows users from communicating seamlessly between different OSN services. These lock-in effects are used to discourage users to migrate to other serv...
Conference Paper
Full-text available
Two of the most popular applications of smartphones are online social networking and playing back music. In this paper, we present the design and implementation of a prototype that combines those usages by creating an architecture that allows the generation and playback of group music playlists that are based on the musical taste of individual gues...
Conference Paper
Full-text available
Advancements in web real time technologies are revolutionizing the way communication is taking place, where new emerging web services are confronting the traditional Telco operated communication services. This has led to the development of new web-centric service architecture that will allow service providers to provide their communication services...
Conference Paper
Full-text available
Online Social Network (OSN) platforms have become an important part of our everyday online lives. We communicate, share content, and organize meetings and events using social platforms and services. However, even though there is a strong trend towards OSN services to become the main communication medium, most OSN platforms are still proprietary, cl...
Conference Paper
Full-text available
As of today, even though there is a strong trend of Online Social Networks (OSNs) becoming the main communication medium, OSN platforms are still mostly proprietary, closed solutions, which are not capable to seamlessly communicate with each other. The research project SONIC (SOcial Network InterConnect) proposes a holistic standard for inter-platf...
Conference Paper
Full-text available
Online Social Networks have become one of the main tools for interpersonal online communication. In the age of the smartphone, mobile user scenarios become more and more important for Online Social Networks. Smartphones enable location-based and context-aware services, but bring the increased risk of privacy violations - at least in centralized OSN...
Article
Full-text available
Energy-efficient operation is essential for mobile network operators to meet the growing demand for higher data rates while managing rising operating costs. Here, the main challenge is to guarantee the quality of user experience whilst saving energy. This challenge demands adaptive algorithms that enable a load-aware network operation that dynamica...
Conference Paper
Full-text available
Online Social Networks (OSNs) have become an important part of our everyday online lives. We communicate, share content, and organize meetings and events using OSN platforms. However, even though there is a strong trend towards OSN services to become the main communication medium, most OSN platforms are still proprietary, closed services that keep...
Conference Paper
Full-text available
Nowadays, mobile networks approach a steady growth in traffic demand. As a result, mobile network providers continuously expand their network infrastructure mainly by installing more base stations. Currently, there is a huge number of base stations serving mobile users all over the world, and this number is expected to double in the coming few year...
Article
Full-text available
The task of allowing people to easily synchronize contact details of acquaintances between different devices and applications over the Internet has led to the rise of cloud-based address repositories, where users can synchronize the local contact database of a device or application with a central server. Anyhow, such systems requires each user to m...
Conference Paper
Full-text available
With approx. 6 million macro cells worldwide and a gross energy consumption of approx. 100 TWh per year as of 2013, mobile networks are one of the major energy consumers in the ICT sector. As trends, such as cloud-based services and other traffic-intensive mobile applications, fuel the growth of mobile traffic demands, operators of mobile telephony...
Conference Paper
With the ongoing growth of mobile Internet usage numbers and the continuous deployment of additional mobile network nodes, the power consumption in mobile networks is increasing at dramatic rates leading to a huge amount of carbon emissions. Therefore, improving energy efficiency in mobile radio networks is of increasing relevance. The reduction of...
Conference Paper
Today's mobile networks run on full capacity 24/7 even though they are not always fully utilized. The resulting power consumption can be reduced by dynamically applying a less energy-consuming configuration to the mobile network. Decisions regarding these optimizations are based on contextual information acquired from the network elements as well a...
Conference Paper
Full-text available
To be able to serve the traffic demand in today's mobile networks, more than 123.000 base stations (BSs) have been deployed by the different network providers in Germany. These BSs are working 24/7 and are dimensioned to serve capacity demand during busy hours. Currently no mechanisms for a load adaptive network reconfiguration are implemented. As...
Conference Paper
Full-text available
As of today, components of radio access networks are operated in an always-on manner. Since network providers need to fulfill the traffic demands of all customers even during peak times to stay competitive, a significantly higher amount of network resources (i.e., bandwidth) is provided. By the end of 2010, Germany's mobile network providers operat...
Thesis
Location Based Services (LBS) are a very interesting area, and techniques aiming to locate a certain person or device are very important as a basic necessity to provide services bound to specific locations. Using Location Based Services one is able to request information or services bound or related to a specific location, e.g. a certain place or b...

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Cited By

Projects

Projects (5)
Project
Blockchain-supported Architecture for Decentralized Services
Project
Blockchain-based social communication and collaboration
Archived project
In order to fulfill today’s high demands on mobile network usage, mobile network providers in Germany have around 123.000 base stations working 24/7. The permanent availability of those network components causes a significant energy consumption. Communicate Green is about implementing an adaptive, context-aware and technology-comprehensive power management in radio networks by maintaining the high quality of experience at the same time. The decision and adaptation algorithms that are going to be implemented throughout the project are going to save energy in mobile networks by dynamically de- and reactivating network components and by reconfiguring the network to user needs based on context information aggregated from network components, end devices and other context sources. Optimizations will be proposed for single and heterogeneous radio technologies as well as for the core network.