Juhoon Kim is a software engineer at Deutsche Telekom AG in Germany. Within the company, he is mainly responsible for the research and development of network functions and for the analysis of the technology impact. He is also working on two EU-funded projects (FP7 UNIFY and 5G-PPP 5GEx) which focus on new networking paradigms such as Software-defined Networking (SDN), Network Function Virtualiztion (NFV), and Next Generation Mobile Network (NGMN/5G). His research interest is centered around developing and evaluating future Internet protocols and architectures such as Network Function Virtualization (NFV), Software-Defined Networking (SDN) Locator/ID Separation Protocol (LISP), and Multi-access data transmission.

Previously, he received Ph.D. and M.Sc. degrees in Computer Science from TU Berlin under supervision of Prof. Anja Feldmann and co-supervision of Prof. Luigi Iannone.

Curriculum Vitae

Research Interests

  • Virtualization of telecommunication infrastructure such as Network Function Virtualization (NFV)
  • Quality of Service (QoS) and Quality of Experience (QoE)
  • Locator/ID Separation Protocol (LISP)
  • Network traffic analysis and network monitoring
  • Internet content delivery
  • Performance analysis of the Internet architectures and network protocols



UNIFY envisions full network and service virtualization to enable rich and flexible services and operational efficiency. Therefore, the UNIFY consortium will research, develop and evaluate means to orchestrate, verify and observe end-to-end service delivery from home and enterprise networks through aggregation and core networks to data centres. Telecom providers struggle with low service flexibility, increasing complexity and related costs. Although cloud computing and networking have been two active fields of research, there is currently little integration between the vast networking assets and data centres of telecom providers. A unified production environment will create unprecedented opportunities for innovation, an improved quality of experience for users, and technological leadership for European industry and academia. A faster and more flexible network will reduce operating costs and open up new business possibilities.


The goal of the 5G Exchange (5GEx) project is to enable cross-domain orchestration of services over multiple administrations or over multi-domain single administrations. This will allow end-to-end network and service elements to mix in multi-vendor, heterogeneous technology and resource environments. Market fragmentation has resulted in a multitude of network operators each focused on different countries and regions. This makes it difficult to create infrastructure services spanning multiple countries, such as virtual connectivity or compute resources, as no single operator has a footprint everywhere.


Internet Traffic Analysis

Locator/ID Separation Protocol (LISP)

Can TCP and Locator/ID Seperation get along?

Juhoon Kim, Luigi Iannone, Anja Feldmann
CHANGE and Ofelia Summer School

Multi-source Multipath HTTP (mHTTP)

Software Defined Networking (SDN) & Network Function Virtualization (NFV)

Theses and Projects

eDonkey and Kad Traffic Analysis based on Semantic Protocol Identification

Juhoon Kim
Master Thesis, Technische Universitaet Berlin

NNTP Traffic Analysis

Juhoon Kim
Master project, Technische Universitaet Berlin

Work Experience

Teaching Experience

Master/Diplom thesis supervision

  • Diplom thesis: World of Warcraft traffic analysis, Matthias Siebke
  • Master thesis: Development of mHTTP scheduling algorithm, Karl Fischer
  • Master thesis: Internet hyper-giant analysis, Soumya Ranjan Parida

Teaching & seminar organization

  • Internet Routing Seminar (WS13/14)
  • Network Protocols and Architectures (WS13/14)
  • Internet Measurement Seminar (SS13)
  • Network Protocols and Architectures (WS12/13)
  • Network Protocols and Architectures (WS11/12)
  • Internet Routing Seminar (WS11/12)
  • Network Protocols and Architectures (WS10/11)
  • Internet Routing Seminar (WS10/11)

Invited lectures & talks

  • A special lecture at Sungkyunkwan University, Korea, An introduction to the new networking paradigm and related EU projects, 2018
  • A talk at Soongsil University, Korea, An introduction to the NFV-related EU projects UNIFY & 5G Exchange, 2018