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 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)

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 - 2008

Wireless Testbed (A-1)

Test-bed system

Transport in Optical Core Network

(A-2)

Security Framework(A-3)

Heterogeneous Network Interworking

(A-4)

Wireless sensor networks

Vehicular networks

Measurement System* (A-5)

Measurement system

Internet Architecture: AWireless Access: BService and Application: C

Cognitive radio network

Cognitive Radio based Wireless Access

(B-1)

Wireless mesh network

Wireless Mesh Network* (B-3)

Multicast/broadcast users

Wireless Broadcast/Multicast Service

(B-2)

Wireless QoS quarantee

Wireless QoS Guarantee*(B-4)

Content-Centric Network Service

(C-1)Content-Centric Network Service

Context-aware Service Protocol+

(C-2)

Context/semantic resource

Seoul National UniversityKAIST (*)ICU (+)

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 mobilityKey Distribution

Center(KDC)

Broadcasting Message : 1 2 3

{ } ||{ } ||{ }s GK s GK s GKK K K

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 d2. AS path inference:

3. Path segments:

4. Path stitching:

5. Path trimming:

a d?

A B C D

a1 a2 a3 a4

a2 a3 a4

b1 b2 b3 b4c1 c2 d1 d2 d3

d1 d2

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 AccessOverlay Spectrum Access

Distributed CR MACDistributed 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

Ba6Ba18

Aa20 Aa5

Aa13

Ab0

Aa20 Aa5

Aa13

Ba6 Ba18Ab0

source

AggregationAggregation

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

LinkMAC

PhysicalPropagationSchedulerOS (Linux)

ATNLMP

ATNLMP

App. Adaptor Protocol

Stack

SchedulerH/W

AdaptorOS (Linux)

D/DMAC

Common Code Base Common Code Base

Application

User MAC

GloMoSim Simulator Testbed 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 TopologySimple Mesh Topology

Measure Fairness of TCP trafficMeasure 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

ExternalDACONs 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 ProfileUser Profile Potential Group

Profile

Potential GroupProfile

User SimilarityUser Similarity

Application User Profile

Application User Profile

Potential GroupProfile

Potential GroupProfile

ApplicationUser Similarity

ApplicationUser Similarity

Weighted SumWeighted Sum

Potential GroupSimilarity

Potential GroupSimilarity

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 dataDistributed Indexing for Multidimensional data

Query Size vs. Average CostQuery Size vs. Average Cost

2008 Yanghee Choi19

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

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. 20-22, 2007, Jeju Island Feb. 18-22, Seoul National University (with AsiaFI

school) Aug. 25-28, Jeju Island (with AsiaFI school)