Future Internet in Korea Yanghee Choi Seoul National University, Future Internet Forum

2008 Yanghee Choi2 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

2008 Yanghee Choi3 R&D projects Fundamental Technologies for Future Internet 2007 – 2009 (3 years) 1.2 BWon/year Future Internet related Innovative Research From year projects for universities ( 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 Yanghee Choi4 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.

2008 Yanghee Choi5 Research Topics

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 Choi6

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

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

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 :

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

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 stitching: 5. Path trimming: a d ? A B C D a 1 a 2 a 3 a 4 a 2 a 3 a 4 b 1 b 2 b 3 b 4 c 1 c 2 d 1 d 2 d 3 d 1 d 2 Query processing

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

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 Aa20Aa5 Aa13 Ab0 Aa20Aa5 Aa13 Ba6 Ba18 Ab0 source Aggregation

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) A T N L M P A T N L M P App. Adaptor Protocol Stack Scheduler H/W Adaptor OS (Linux) D/D MAC Common Code Base Application User MAC GloMoSim SimulatorTestbed Node

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 TopologyMeasure Fairness of TCP traffic

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

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

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

2008 Yanghee Choi19 Future Internet Forum Established in 2006 to promote R&D collaborations in Future networking Building research communities Workshops, seminars, publications Research Council General guidelines, technical documents Working groups Architecture Wireless Service Testbed Policy

2008 Yanghee Choi20 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 , 2007, Jeju Island Feb , Seoul National University (with AsiaFI school) Aug , Jeju Island ( with AsiaFI school)