Se Gi Hong | Projects
10/2011 ~ Present
Network Service Enhancement Project
Hughes Network Systems, LLC
Multihomed backhaul network in heterogeneous access networks
- Propose multihomed backhaul network to enhance network
services.
- Design network system architecture and a testbed which
emulates multihomed backhaul
network.
- Implement prototype of this system and analyze the system
using the testbed.
09/2009 ~ 08/2011
ICOW (Internet Cache on
Wheels) Project
Columbia University
Opportunistic
wireless networks for public transit systems
- Defined
network resource limitation and allocation problems of opportunistic
networks in public transit systems.
- Proposed a
system-level solution to increase content availability and system
usability.
- Developed
system architecutre, built prototype, evaluated performance and
analyzed the system.
Publication
- Se Gi hong,
SungHoon Seo, Henning Schulzrinne and Prabhakar Chitrapu, "Internet Access in Public
Transit Systems," Under review at IEEE Transactions on
Vehicular Technology.
05/2009
~ 08/2009
Hybrid Wireless Network
Project
InterDigital
Communications, LLC (Summer Internship)
- Security issues on authentication, authorization,
accounting, and privacy in hybrid networks.
- Categorized security architectures in hybrid networks and
raised security problems.
09/2007
~ 05/2009
PBS (Permission-Based Sending) Project
Columbia
University
Control plane signaling
architecture for programmable routers
- Proposed a signaling architecture for network traffic
authorization, aiming to prevent denial-of-service (DoS) attacks and
other forms of unauthorized traffic.
- Exploited control plane signaling protocol architecture and
secure authorization
(permission).
- Implemented this project using netfilter, Click modular
router and NSIS (FreeNSIS).
Publication
- Se Gi Hong,
Henning Schulzrinne and Swen Weiland, "Signaling architecture for
network traffic authorization," Under review at IEEE Communications
Magazine.
- Se Gi Hong,
Henning Schulzrinne and Swen Weiland, "Signaling architecture for
network traffic authorization", In Proceeding of IEEE
Conference on Global Communications, Miami, FL, Dec. 2010.
- Se Gi Hong and
Henning Schulzrinne, “PBS
NSLP: Network Traffic Authorization”, IETF,
Internet Draft, July 2010, work in progress.
06/2007 ~ 08/2007
Evaluation of a DHT-based
P2P System
Bell Labs at Alcatel-Lucent (Summer Internship)
DHT-based P2P control
messages
- Evaluated
the control message overhead created by the DHT-based P2P system under
various churn rates and different networking sizes.
- Simulated this project using OMNeT++ and OverSim.
Publication
- Se Gi Hong, Volker
Hilt, and
Henning Schulzrinne, “Evaluation
of Control Message Overhead of DHT-based P2P System”,
Bell Labs Technical Journal (BLTJ), Vol. 13, No. 3.
01/2006
~ 05/2007
7DS (Seven Degrees) Project
Columbia
University
Distributed wireless networks
Measurements
of Multicast Service Discovery
- Measured and analyzed multicast service discovery traffic
in a campus wireless network.
- Analyzed
different service discovery delay models in terms of packet overhead
and service discovery delay under different network sizes and
mobilities.
Accerelating Service Discovery
- Proposed
and algorithm to accelerate service discvory in wireless Zero
Configuration Networking (Zeroconf) mobile ad hoc networks.
- Allowed users to discover network topology changes and new
services in real-time while minimizing network overhead.
- Implemented and tested this project on
Linux, using C.
P2P Information Exchange
- Worked on data exchanges on wireless mobile ad hoc networks
by
providing an application-level set of protocol services that will
enable exchange of information between peer devices.
- Implemented and tested this project on Linux using
C, and also implemented and tested
it
using LEAF (Linux Embedded Application Firewall), an embedded Linux
distribution, on a WRAP (Wireless
Router Application Platform).
Publication
- Se Gi Hong,
Suman Srinivasan and
Henning Schulzrinne, “Measurements
of Multicast Service Discovery in a Campus Wirless Network”, In Proceeding of IEEE
Conference on Global Communications, Honolulu, Hawaii, Nov. 2009.
- Se Gi Hong,
Suman Srinivasan and
Henning Schulzrinne, “Accelerating
Service Discovery in Ad-hoc Zero
Configuration Networking”, In Proceeding
of IEEE
Conference on Global Communications, Washington D.C., Nov. 2007. [pdf]
- Suman Srinivasan,
Arezu Moghadam,
Se Gi Hong and Henning Schulzrinne, “7DS
- Node Cooperation and Information
Exchange in Mostly Disconnected Networks”, In
Proceeding of IEEE International
Conference on Communications, Glasgow, Scotland, June 24 -
28, 2007. [pdf]
01/2004
~ 12/2005
The
Armstrong Project
Columbia University
Funneling-MAC
protocol
- Worked on a localized and sink-oriented MAC
protocol in wireless sensor
networks, focusing on congestion control and aggregation of
information.
- Wrote a C++ code of this protocol and tested it on
NS-2
simulator.
Pulication
- Gahng-Seop Ahn, Emiliano
Miluzzo,
Andrew T. Campbell, Se Gi Hong and Francesca Cuomo, "A
Localized, Sink-Oriented MAC For Mitigating the Funneling
Effect in Sensor Networks," Elsevier Computer
Networks, under review.
- Gahng-Seop Ahn, Emiliano
Miluzzo,
Andrew T. Campbell, Se Gi Hong and Francesca Cuomo, "Funneling-MAC: A
Localized, Sink-Oriented MAC For Boosting Fidelity in Sensor Networks",
In
Proc. of Fourth ACM Conference on Embedded Networked Sensor Systems
(SenSys
2006), Boulder, Colorado, USA, Nov. 1-3, 2006. [pdf]