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차세대 이동통신 액세스 네트웍 기술차세대 이동통신 액세스 네트웍 기술

Oct. 2004

Song Pyeong Jung([email protected])


TopicsTopics

IntroductionIntroductionIntroductionIntroduction1111

Seamless MobilitySeamless MobilitySeamless MobilitySeamless Mobility4444

Service PerspectiveService PerspectiveService PerspectiveService Perspective2222

Access NetworkAccess NetworkAccess NetworkAccess Network3333

R&D Areas in ETRIR&D Areas in ETRIR&D Areas in ETRIR&D Areas in ETRI5555


①① NG mobile comm.NG mobile comm.

②② Digital TVDigital TV

③③ Home networkHome network

④④ IT SoCIT SoC

⑤⑤ Next generation PCNext generation PC

⑥⑥ Imbedded S/WImbedded S/W

⑦⑦ Digital contentsDigital contents

⑧⑧ TelematicsTelematics

⑨⑨ Intellectual robotIntellectual robot

①① NG mobile comm.NG mobile comm.

②② Digital TVDigital TV

③③ Home networkHome network

④④ IT SoCIT SoC

⑤⑤ Next generation PCNext generation PC

⑥⑥ Imbedded S/WImbedded S/W

⑦⑦ Digital contentsDigital contents

⑧⑧ TelematicsTelematics

⑨⑨ Intellectual robotIntellectual robot

①① BcNBcN

②② USNUSN

③③ IPv6 IPv6

①① BcNBcN

②② USNUSN

③③ IPv6 IPv6

① 2.3GHz PIS

② DMB (Sat/Ter)

③ Home Network

④ Tele-matics

⑤ RFID

⑥ W-CDMA

⑦ DTV

⑧ VolP

① 2.3GHz PIS

② DMB (Sat/Ter)

③ Home Network

④ Tele-matics

⑤ RFID

⑥ W-CDMA

⑦ DTV

⑧ VolP

New Services (8)

Infrastructure (3)

Driving Engines (9)

What is the IT839 Project ? (소스 : MIC) Target : Achievement of $20,000 (IT $5,000, GNI) Driving Forces : IT839 Project

Introduction (1/3)Introduction (1/3)


Introduction (2/3)Introduction (2/3) Infra-structure

Three Main Infra will be constructed for u-Korea around 2010

Home Automation

· 아날로그 중심

U-Korea(Knowledge-based Society)

BcN- Voice&data- Telecomm&Broadcast.- Wireline&Wireless

IPv6-Converged

-Inter-woking

USN- Thing -Thing- Person -Thing

-Via RFID

Integrated

20 million subs (2010) chips below 10 cents (2007)

Conversion to IPv6 (2010)

(High QoS & Data Rate)

New Services Driving Engines


Introduction (3/3)Introduction (3/3) Scope of NG Mobile Comm.

Vision and Target of NG R&D in ETRI

Vision & MissionTo Achieve the Ubiquitous Service Environments for u-Korea

To Pursuit the Global Leading R&D Institute in IT Research Fields

Target To Provide Commercial WiBro Service in 2006

To Build up a Initial 4G Testbed System in 2007

Target To Provide Commercial WiBro Service in 2006

To Build up a Initial 4G Testbed System in 2007

Service & System•Vision and Service •Mobile Terminal Platform •Mobile Ad-hoc Networking•SDR Technologies•PIS as a pre-4G technology

Service & System•Vision and Service •Mobile Terminal Platform •Mobile Ad-hoc Networking•SDR Technologies•PIS as a pre-4G technology

Access Network IPv6 based Access Station Multi-mode Base Station Access Managers to supportE2E QoS, Inter-system Mobility etc

Access Network IPv6 based Access Station Multi-mode Base Station Access Managers to supportE2E QoS, Inter-system Mobility etc

Radio Technologies •HMm RF/Modem •HPi RF/Modem•Advanced W-LAN•MIMO/SA•RFID, Ad-hoc, Sensor •etc

Radio Technologies •HMm RF/Modem •HPi RF/Modem•Advanced W-LAN•MIMO/SA•RFID, Ad-hoc, Sensor •etc


Service Perspectives

Terminology

NG : B3G : 4G


Multimedia

Service

Seamless MobilityUbiquitous Service

1G 2G 3G 3.5G 4G

Mobile Telephony

Human-to-Human messaging

Human-to-machine multimedia

communication

Thing-to-Thingbroadband & converged rt m

ultimedia services

Voice

- Multimedia Message

- LBS

- Wireless Internet

- Download(Bell Sound)

- Video Streaming- Mobile TV

Service Evolution : 1D (telephony) 3D (rt mm)

Evolution of Mobile ServicesEvolution of Mobile Services


System and Service of B3G still not defined B3G will be a service-driven and a human-oriented system

Define B3G service as a 3D model with three different levels : Service Level 3 (8 categories): Service Areas categorizing SL2 Service Level 2 (32 services) : Appl. Services utilizing SL1 Service Level 1 (31 technologies): Network Functions (&Features)

SL3

SL1

SL2V

oice

Web

ITS

Communication

Business

Life

QoSHandover

Security

Framework of B3G ServicesFramework of B3G Services


Mobility/Traffic Business/Commerce

Communication Life

Leisure/Games

Telemedicine/Health

Broadcasting/weather/Public

Emergency/Disaster

① Voice

② moving picture

③ web browsing

④ Messaging etc(5)

⑤ Navigation

⑥ context-aware

⑦ positioning based guidance

⑧ Etc(5)

⑩ Management/reservation

⑪ mobile payment

⑫ mobile advertisement

⑬ Etc(6)

㉜ Remote control

Service(1) ㉖ VoD

㉗ situation adaptive

㉘ multimedia

㉙ Chatting

㉚ etc(5)

⑯ Intelligent agent

⑰ monitoring

⑱ remote education etc(4)

⑳ ITS (traffic signaling, alarm)

㉑ mobile control center

㉒ Satellite etc(3)

㉓ A pay broadcasting

㉔ emergency news

㉕ electronic voting etc(3)

Level 1: Service Pools(31 items)

Real time A/V streaming, VoIP, Handover, data transmission, profile transmission, multimedia download, multi-call/multi-session, request/answer type, authentication and authorization, context-based push, multimedia information broadcasting, location aware, location tracking, profile processing, network selection, mobile payment, ad hoc communication between user equipments, information/situation informing, user preference management, information security, sensor awareness, personal credit certification, equipment awareness, language and image processing, virtual home environment, trans-coding, codec download, channel QoS management, alarming, automatic formulation of a closed user group, anonymity guaranty.

SL 3 (8 categories)

SL 2 (32 services)

SL 1 (31 tech.)

Multi-level Services of B3GMulti-level Services of B3G SL3 : Mobility SL2 : Navigation, context-aware SL3 : Downloading, Location-tracking, User-profile-handling technologies


Concept of 3D Service ( 소스 : ETSI) Enabling a Always best connection in terms of cost or quality Simultaneous Usage in Converged Access Networks Flexible Combination Usage of Service :

• (1Ser, 1Sys, 1 Op) - classical cellular• (2Ser, 2Sys, 1 Op) - cooperative• (1Ser, 1Sys, 0 Op) - classic Ad hoc

System

Operator

Service

Voi

ce

Web

ITS

Sys-A

Sys-B

Sys-C

Oper-cOper-b

Oper-a

Space of simultaneous use - classical Ad hoc use -

Different bearer services supported by different systems

Concept of 3D ServiceConcept of 3D Service


Technical Trends of Access Network Examples of Access Network

Flarion/f-OFDM (USA) ETSI/IST (EU) IP2 (Japan)

Access Network- 기술 동향과 개발 사례 -


Trends of IP Access Network (2/2)Trends of IP Access Network (2/2)

1G : Analog Access Network 2G : Digital Access Network 3G : Digital Composite AN to Support Ckt and Pkt simultaneously B3G : IP-based Open Multimedia Access Network

Evolution of Mobile Access Network from Evolution of Mobile Access Network from Generation AspectsGeneration AspectsEvolution of Mobile Access Network from Evolution of Mobile Access Network from Generation AspectsGeneration Aspects

ATM/IP Transport RAN : Introduction of IP Tech. outside AN (AN-CN) IP Transport RAN : Introduction of IP Tech. inside AN Open/Distributed IP RAN : Introduction of All-IP

Evolution of Mobile Access Network from Evolution of Mobile Access Network from Technology AspectsTechnology AspectsEvolution of Mobile Access Network from Evolution of Mobile Access Network from Technology AspectsTechnology Aspects

Short-term : Independent AN by each Operator/Service (Interworking-level) Mid-term : CN-centric AN (each AN as it is) Long-term : AN-centric /Converged AN with Open & Distributed Architecture

Evolution of Mobile Access Network from Evolution of Mobile Access Network from Architectural AspectsArchitectural AspectsEvolution of Mobile Access Network from Evolution of Mobile Access Network from Architectural AspectsArchitectural Aspects


Trends of IP Access Network (2/2)Trends of IP Access Network (2/2)

RNC

RRM

IubIub

Iu

Po int-to -po int AT M C oncentration

Current

R99/R4

IP R outing IP T ransport Po int-to -po int N ode B L ink

IP transport RAN

R5/R6?

IP T ra ns po rt N e tw o rk

Iub Iub

N ode B R e-parenting R N C D istributed R R M

IP RAN

R?

IP N e tw o rk

Iu

Iub Iub

Aggregation

N ode B

RNC: Radio Network Controller RRM: Radio Resource Managem ent

Node B

RNC

RRM

Iu

RNC

RRM

Iu

CallServer

O&M

RRM

VocoderPool

LocationServer

N ode B

Node B

3G 3.5G 4G

A ll IP N etw ork

Current : Dedicated link with ATM IP transport RAN : Networking with IP IP RAN : IP transport RAN + Distributed functions (e.g. RNC/CN functions) Evolution towards IP-based flexible arch. from ATM-based dedicated arch.

Example of Access Network Evolution in Example of Access Network Evolution in 3GPP3GPPExample of Access Network Evolution in Example of Access Network Evolution in 3GPP3GPP

* IP based RAN ? IP –infra based open arch.


Provision of cellular services by IEEE-based architecture with mobility Trial of paradigm change from CS Voice to PS Data centric architecture under

Internet environments Direct connection of f-OFDM AN to internet-infra (not via core network)

Example : f-OFDM (1/3)

f-OFDM Access Network Architecture f-OFDM Access Network Architecture – Short term– Short term (src : Flarion(src : Flarion))f-OFDM Access Network Architecture f-OFDM Access Network Architecture – Short term– Short term (src : Flarion(src : Flarion))


Radio Router = RF + BS (AN : BTS/BSC) + AR (subset of CN: FA/AAA/DHCP/OAM…) Field Test with Traffic Gen. : Indoor (audio, game), Outdoor (ftp) MT : Laptop computer (fMDM, intra-cell traffic, inter-cell interference) Edge Router : Aggregate Router (controlled by HA)

f-OFDM (2/3)

Radio RouterMT

F-OFDM

BS ARRF

1 2 3 460

D#

*1

B1CA7 8

95

Edge Router

IPSwitch

IETF Interface

(T1)

Servers(Game)

Servers(Audio)

GE

Radio Router

f-OFDM AN

(1.25~5 MHz)MT

F-OFDM

BS ARRF

1 2 3 460

D#

*1

B1CA7 8

95

DS3

Multiple DS1

HA

f-OFDM Test-bed Configurationf-OFDM Test-bed Configuration


Situation : HO during FTP tx (serverMT)

Mobile Controlled Handoff MIP-based Make before Break FTP Download Example :

f-OFDM (3/3)f-OFDM (3/3)

f-OFDM Handover Scenario f-OFDM Handover Scenario

MT Old-RR New-RR AAA HA

Packet Switched Communication via New RR

L2 Registration

FA Advertigement(FAA)

Registration Request (RREQ) RREQ

Registration Reply (RREP) RREP

Pilot Tone Pattern

MIP Registration + PFANE (Previous FA Notification) MIP Reg+PFANEMIP Registration Response

Context Transfer Request

Context Transfer Update

Binding Update

Binding Update Response

Packet Switched Communication via Old RR(DL FTP Transfer from Server)통신(Old RR)

User 인증 / 암호화(New RR)

User 등록(New RR)

User 프로화일 Transfer

MIP 등록

Binding(New RR)

통신(New RR)

AAA-Request

AAA-Reply(Rand,L2 keys, profile)..

fwarding table(redir: del, add)

Inter-RR intf: context protocol

(add/drop)

New RR 에서 해당가입자 인증

sib(S_ID) broad

add in table

(out of domain)

Authentication & Encryption Procedures (using EAP)


Why take multi-mode approach ! Operators own some RATs and coopera

te with other NPs of the CR infrastructure

Goals is to improve capacity and QoS levels and is to reduce cost levels

Users are assigned to best radio access networks and technology

ETSI – IST (1/2)ETSI – IST (1/2)

4G Access Network Configuration 4G Access Network Configuration – Short term– Short term (src (src : IST): IST)4G Access Network Configuration 4G Access Network Configuration – Short term– Short term (src (src : IST): IST)


Components Terminal : Reconfigurable to support

different RATs Access Point : No Inter-working but c

onverged and reconfigurabie to support different RATs

Protocol stack : AS : indepen. low-layers by each RAT NAS : common & Flexible high-layers AP is reconfigured by Network-level Reconfi

g. Env. (config. profiles DB/ SW repositories/ recofig. Manager)

Terminal is reconfigured by TRM (Terminal Reconfiguration Manager) including (reconfig. Gateway/ config. profile DB)

ETSI – IST (2/2)ETSI – IST (2/2)Access Network Configuration Access Network Configuration

with Reconfigurable Ubiquitous Terminal with Reconfigurable Ubiquitous Terminal – Long term– Long termAccess Network Configuration Access Network Configuration

with Reconfigurable Ubiquitous Terminal with Reconfigurable Ubiquitous Terminal – Long term– Long term

Reconfig. Env.

Reconfig. BS

Reconfig. MT.


To allocate new traffic load to Best AP, RA Coordinator provides the cordi-functions between CN and ANs.

IPIP22 has architecture to cover the mid-term and long-term

IPIP22 (1/3)(1/3) IPIP22 (1/3)(1/3)IPIP22 Arch for Composite Radio Env. – Arch for Composite Radio Env. – Mid/Long termMid/Long term (src : WWRF) (src : WWRF)IPIP22 Arch for Composite Radio Env. – Arch for Composite Radio Env. – Mid/Long termMid/Long term (src : WWRF) (src : WWRF)


IPIP22 (2/3)(2/3) IPIP22 (2/3)(2/3)

Radio Access Coordination Architecture Radio Access Coordination Architecture (src : WWRF(src : WWRF))Radio Access Coordination Architecture Radio Access Coordination Architecture (src : WWRF(src : WWRF))


IPIP22 (3/3)(3/3) IPIP22 (3/3)(3/3)Basic Flows of Seamless Handover (src : WWRFBasic Flows of Seamless Handover (src : WWRF))Basic Flows of Seamless Handover (src : WWRFBasic Flows of Seamless Handover (src : WWRF))


Seamless Mobility- Overview -

BcN and B3G Basic Model of B3G Access Network Basic Scenario of Inter-system Handover B3G Testbed


B3G Access NetworkB3G Access Network

IAD

RAN2G/3GPSTN

PBX

TGW IntegTGW

SGW

Softswitch

AGWLocalExchange

SS7 based IN STP

Integ.AGW

ApplicationServers

Wireless3.5G/4G/5G

OSS/BSSServers

WLAN AP+

ITS+

Optical BackbonePacket

Network Virtual Switch/Router

Wire/W’lessIntegratedSoft Switch

OPEN APIGateway

OPEN API

Feature/MediaServersIP-based Common

Core Network(Integ. Wire/Wireless)

Access Internet

Next Page!

BcN is a N.G. integrated network infra to support broadband multi-media services with the features of Seamless connectivity and guaranteed QoS under converged network including wire-line/wireless communication and broadcast infra in Korea.

Basic approach of BcN is similar to that of B3G; B3G a subset of BcN!

B3GB3G is a subset of BcN! is a subset of BcN! B3GB3G is a subset of BcN! is a subset of BcN!


From Wireless Perspectives of BcN

Public Internet

Common Core Network

overlapped coverage area

BS or AP :

Gateway router

Servers

Vertical Handover

Horizontal Handover

Micro mobilityMacro mobility

B3G Access NetworkB3G Access Network

ITU-R Model of B3G Access Network ITU-R Model of B3G Access Network (src : ITU_R(src : ITU_R))ITU-R Model of B3G Access Network ITU-R Model of B3G Access Network (src : ITU_R(src : ITU_R))


ISHO – Key TechnologiesISHO – Key Technologies

Problem (frequent handover, financial difficulties with nation-wide deployment) Phenomenon ! (Packet-loss, Packet-delay, Packet-blocking, Inter-working)

Multicast / BroadcastMulticast / Broadcast

Target Cell PredictionTarget Cell Prediction

Resource ReservationResource Reservation

QoS AdaptationQoS Adaptation

Vertical HandoverVertical Handover

Solu

tion

Solu

tion

SeamlessSeamless

TimelessTimeless

High-Data Rate/High-Data Rate/Small- Cell SizeSmall- Cell Size

High-Speed MobileHigh-Speed Mobile

HO Signaling SimplicityHO Signaling Simplicity

Multicast / BroadcastMulticast / Broadcast

Location PredictionLocation Prediction

Resource ReservationResource Reservation

QoS AdaptationQoS Adaptation

Buffering / TunnelingBuffering / Tunneling

LosslessLossless

Location-Based Fast Handoff

Vertical HandoverVertical HandoverVertical HandoverVertical Handover

Pre-Second-Tier Registration & Pre-Tunnel Session Initiationfor F-MIPv6

Dynamic Cluster HandoverAlgorithm for F-MIPv6

Lossless Handover Algorithmusing the I-TCP

Overlaid Inter-system HandoverAlgorithm

Inter-system Handover – Inter-system Handover – Real Time MultimediaReal Time Multimedia Service ServiceInter-system Handover – Inter-system Handover – Real Time MultimediaReal Time Multimedia Service Service


Pro

ced

ure

Ra

dio

Do

ma

inIn

tern

et

Do

ma

in

Best Cell Best Cell SearchSearch

CoA AcquisitionCoA Acquisition(Sol. & Adv.)(Sol. & Adv.)

WirelessArea/WLAN(Roaming)

Target CellTarget CellSearchSearch

HO Request,HO Request,Admission_ChkAdmission_Chk

RadioRadioAccessAccess

HandoverHandoverRegistrationRegistration

MIPMIPTriggeringTriggering


MobileArea/Cellular(Handover)

MIPMIPRegistrationRegistration

QoS NegotiationQoS Negotiation(Pkt Traffic)(Pkt Traffic)

MIPMIPRegistrationRegistration

ISHO Request,ISHO Request,Adm_Chk (T-Cell)Adm_Chk (T-Cell)


ISHOISHORegistrationRegistration

MIPMIPTriggeringTriggering


Inter-SystemArea/B3G

(R+H)

MIPMIPRegistration/Tunnel.Registration/Tunnel.

L2L2TriggeringTriggering

HandoverHandoverTriggeringTriggering

ISHO ISHO TriggeringTriggering

A.1 HandoverTriggering

A.2 Target CellEstablishment

A.3 Serving CellRelease

QoSQoSNegotiationNegotiation

Mobility Procedure

Service Service ServiceC. Service (Resume)


SecuritySecurity(Auth&Cipher)(Auth&Cipher)

SecuritySecurity(Auth&Cipher)(Auth&Cipher)

B.1 MIP Triggering

B.3 MIP Registration

B.2 CoA Aquisition

Mobility OverviewMobility Overview


Test-bed for B3G in ETRITest-bed for B3G in ETRI

Thru Converged AN with seamless mobility

Optimal approach to achieve the ubiquitous environmentsOptimal approach to achieve the ubiquitous environmentsOptimal approach to achieve the ubiquitous environmentsOptimal approach to achieve the ubiquitous environments

Backbone (IMT-2000) (e.g., WCDMA with SA & MIMO)

Low Tier (HPi)

IP basedIP basedCommonCommon

Core NetworkCore Network

Internet/IntranetWorld

IP based IP based HeterogeneousHeterogeneousAccess NetworkAccess Network

15~100 MbpsHigh-speed Mobile MM

TelecommunicationsWorld

100~150 Mbps High-speed Portable Internet

High Tier(HMm)

Mobile Adhoc

Network

Low Tier (Wireless LAN)(e.g., future version of 802.11)

Global ManagerGlobal Manager(Mobility, E2E QoS, (Mobility, E2E QoS,

Global Security)Global Security)


•ㄹㅇ

감 사 합 니 다

ETRi ETRi 이동통신연구단 무선액세스그룹 이동통신연구단 무선액세스그룹 개방형액세스연구팀장 개방형액세스연구팀장 책임연구원 송 평 중

([email protected])(WCDMA 단말 : 010-2001-0020, CDMA 단말 : 010-9600-64045003)

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