future internet in korea
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Future Internet in Korea
YangheeChoi SeoulNationalUniversity, FutureInternetForum
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2008 Yanghee Choi 2
Internet in Korea
Wireline subscribers : 23.3 million (Oct. 2007)
Cellular : 43 million Internet Users : 34.4 M (75.5%) IPv4 addresses : 58.8 M High speed Internet subscribers : 14.7 M(Nov.2007)
xDSL 31.8% cable modem 34.9% apartment LAN 28% FTTH 5.3% 90.8% of all households
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2008 Yanghee Choi 3
R&D projects
Fundamental Technologies for Future Internet 2007 – 2009 (3 years) 1.2 BWon/year
Future Internet related Innovative Research From 2008 3-5 year projects for universities (0.2-0.5 BWon/year)
Robust Mobility Management Network Monitoring and Measurement at micro-level Personalized Service Architecture Security for Survivable Networks
IT Research Center on Future Internet (2008-2011)
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2008 Yanghee Choi 4
Fundamental Technologies for Future Internet Project details
R&D Planning (through Future Internet Forum)
Identify long-term R&D topics Predict the future technologies Promote collaborations
Work on selected research topics (universities)
Architecture Wireless Services
Participation to Standard Activities IETF, ITU, IEEE, forum etc.
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2008 Yanghee Choi 5
Research Topics - 2008
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Research items
Testbeds Virtualized
WirelessMesh (KAIST)
Cognitive Radio (SNU)
Virtualized Femtocell (SNU)
Context-aware (ICU)
Mobility (KU) Measurement
(KAIST)
Pioneering concepts Content-driven
(SNU) Cross-layer
(POSTECH) Micro-management
(KAIST) Hard security (SNU) Disruption Tolerant
Network (SNU)
2008 Yanghee Choi 6
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Architecture (1/5)
Wireless Testbed (Seoul National University) Goal
Develop a general testbed for cellular networks
Cell-lab Uses WCDMA as access technology Virtualization of base station by base station head Users can access remotely to the mobile station and base
station through Internet
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Architecture (2/5)
Transport Architecture in Optical Core Network (Seoul National University)
Goal Design a flow-based transport architecture in optical network
Hierarchical TDM & WDM Optical Transport Architecture Dispersing a load of core edge (ingress/egress) node to metro
nodes Switching at Optical layer is expanded into MAN
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Architecture (3/5)
Security Architecture (Seoul National University) Goal
Develop an efficient multicast key management scheme
Balance the logical key hierarchy to reduce network overhead for rekeying Analyze average number of rekeying message considering user
mobility Key Distribution Center
(KDC)
Broadcasting Message :
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Architecture (4/5)
DTN Interworking Architecture (Seoul National University) Goal
Develop a programmable emergency network architecture
Propose a DTN-based emergency network framework to monitor disaster areas
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Architecture (5/5)
Measurement System (KAIST) Goal
Design and implementation of a measurement system for Future Internet
Improve Delay Estimation with Path Stitching
1. Given user query: Path and end-to-end delay between a and d 2. AS path inference:
3. Path segments:
4. Path s/tching:
5. Path trimming:
a d ?
A B C D
a1 a2 a3 a4
a2 a3 a4
b1 b2 b3 b4 c1 c2 d1 d2 d3
d1 d2
Query processing
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Wireless (1/4)
Cognitive Radio System (Seoul National University) Goal
Propose a new PHY/MAC for Cognitive Radio System
Analyze centralized/distributed cognitive radio MAC Analyze spectrum sharing based on overlay/underlay
access
Overlay Spectrum Access Distributed CR MAC
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Wireless (2/4)
Indirection Multicast System (Seoul National University) Goal
Propose an indirection-based multicast in Future Internet
Propose a hierarchical indirection multicast (HIM) Reflect physical network hierarchy on the logical identifier
Ba6 Ba18
Aa20 Aa5
Aa13
Ab0
Aa20 Aa5
Aa13
Ba6 Ba18 Ab0
source
Aggregation
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Wireless (3/4)
Wireless Mesh Network (KAIST) Goal
Develop multi-hop wireless access system architecture and protocols for Future Internet Testbed
Develop a code set that can be shared both simulator and testbed node
Application Transport Network
Logical Link MAC
Physical Propagation Scheduler OS (Linux)
ATN
L M
P
ATN
L M
P
App. Adaptor Protocol Stack
Scheduler H/W Adaptor
OS (Linux) D/D MAC
Common Code Base Common Code Base
Application
User MAC
GloMoSim Simulator Testbed Node
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Wireless (4/4)
QoS Support in Wireless Access (KAIST) Goal
Develop a resource sharing scheme to guarantee QoS in multi-hop wireless network
Propose a fair rate-allocation scheme Propose an assured forwarding service in multi-hop network
Simple Mesh Topology Measure Fairness of TCP traffic
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Services (1/3)
Content-Oriented Network (Seoul National University) Goal
Develop a content-oriented network architecture and services
Propose an user-assisted content-oriented overlay networking architecture Make user-deployable devices (e.g. AP, home BS, etc) form a
novel network for a content distribution service
DACON user
DACON host
DACON portal
DACON border portal
Peer Link
Internal Link
External Link
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Services (2/3)
Interaction Protocol for context-aware Services (ICU) Goal
Develop context-aware interaction protocol in mobile ad hoc network
Propose an immediate context-aware network architecture Common discovery layer, Profile matching
User Profile Potential Group Profile
User Similarity
Application User Profile
Potential Group Profile
Application User Similarity
Weighted Sum
Potential Group Similarity
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Services (3/3)
Object/Service Discovery (ICU) Goal
Develop a semantic resource discovery in MANET/SensorNet environment
Propose a Multiple Distributed Indices (MDI) to enhance locality preserving Supporting high-dimensional Range Query in MANET
/SensorNet
Distributed Indexing for Multidimensional data Query Size vs. Average Cost
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2008 Yanghee Choi 19
Future Internet Forum
Established in 2006 to promote R&D collaborations in Future networking
Building research communities
http://fif.kr Workshops, seminars,
publications
Research Council General guidelines,
technical documents
Working groups Architecture Wireless Service Testbed Policy
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2008 Yanghee Choi 20
FI (Future Internet) Events
International Conferences “Internet of the Future”, July 20-22, 2006,
Seoul, Korea International Future Internet Workshop 2007,
July 9-10, 2007, Seoul National University International Conference on Future Internet
2008, June 18-20, Seoul, Korea
Future Internet Camp Aug. 20-22, 2007, Jeju Island Feb. 18-22, Seoul National University (with
AsiaFI school)
Aug. 25-28, Jeju Island (with AsiaFI school)