3GPP SAE 기술동향 - HSNold.hsn.or.kr/hsn2007/document/9/VII-3.pdf · 2014-04-03 · *Vodafone: SAE TS 23.401 rapporteur활동 NTT DoCoMo-Non-3GPP망의연동을 통한All-IP...

3G Standardization and System Research Group, Mobile Comm. Tech. Lab., LGE, KOREA

3GPP SAE 3GPP SAE 기술기술동향동향(System Architecture Evolution)(System Architecture Evolution)

2007. 2. 9이동통신기술연구소/3G 표준화그룹김현숙 ([email protected])

The 17The 17thth HighHigh--Speed Network WorkshopSpeed Network Workshop

3G Standardization and System Research GroupGreat Company Great People

ContentsContentsWhat’s SAE?Architecture Reference ModelsMobility managementsOperators’ viewsAbbreviationsReferences


WhatWhat’’s SAE?s SAE?


BackgroundBackgroundSAE

3GPP WG SA2에서 2004년말연구시작LTE 표준화와병행하여네트워크의구조를결정하고이기종망간의핸드오버를지원하는것을목적으로하는 3GPP Work Item3GPP 시스템을 IP 기반으로한다양한 Radio Access Technology를지원하는시스템으로발전시키기위한작업

Packet-optimized system, higher-data-rate, lower-latency를지원하는시스템을목표로작업진행

2006년 12월 study phase 종료, 2007년 1월부터본격적인규격화작업을시작

일정

2007년 9월까지 Stage2/3 기본표준규격작업목표Stage 3일부이슈는 2008년 3월까지규격작업목표2009~2010년상용화목표


SAE SAE 요구사항요구사항

High-level principles3GPP and non-3GPP access systems 지원Scalable system architecture 지원IPv4 and IPv6 connectivity 지원Mobility Management

Evolved 3GPP system과다른여러종류의 access system 사이의이동성지원

다양한종류의단말(유/무선단말)을지원사업자가가입자를위한다양한종류의 access system을제어Real-time/non real-time 서비스의 seamless operationsUser traffic data의최적화된라우팅지원모든가능한 roaming scenarios 지원

Security특정 access network 기술에독립적인 security 적용

IMS IMS over SAE/LTE access와 CS domain사이의 service continuity

CCf. f. 자세한자세한 요구사항은요구사항은 TR 23.882 TR 23.882 참고참고


The role of TSG WGs for LTE/SAEThe role of TSG WGs for LTE/SAE

LTELTE SAESAE

CCf. Current local standardization bodies: ARIB (Japan), ATIS (US)f. Current local standardization bodies: ARIB (Japan), ATIS (US), CCSA (China), ETSI (Europe), TTA (Korea), TTC (Japan), CCSA (China), ETSI (Europe), TTA (Korea), TTC (Japan)


3GPP Roadmap3GPP Roadmap2001▼

Release 8Release 8Release 7Release 7Release 6Release 6Release 5Release 5ReleaseRelease 99/499/43GPP3GPPReleaseRelease

2003▼ ▼

2007▼

?▼

2005

상용화상용화

Release 99/4 system

Release 5/6 system

Evolution system

2010

SAESAESpecificationSpecification

SAE Feasibility StudySAE Feasibility Study(TR 23.882)(TR 23.882)

3GPP3GPPSAESAE

2004년 말▼

2006.12▼

2007.9▼

20072007년년11월월 SA2#56SA2#56TS 23.401&TS24.402 skeleton/scope/architecture model 결정

20062006년년 1212월월 SA/CT #34SA/CT #34TS 22.278 승인(with exception item)SAE WI 승인 (SA/CT)

20072007년년22월월 CT1/3/4 #45CT1/3/4 #45SAE 논의시작

SAE study phase SAE study phase 기간기간중중RAN1/2/3 & SA3 와joint meeting 및 LS 상호교환

Cf. LTE: 2006/09 study phaseCf. LTE: 2006/09 study phase종료종료//규격화규격화 작업시작작업시작, 2007/03 Stage2, 2007/09, 2007/03 Stage2, 2007/09 Stage 3 Stage 3 규격화규격화 작업작업 완료완료 목표목표


TS 23.401 & TS 23.402TS 23.401 & TS 23.402Guidance to TSG SA WG 2 on progressing the SAE specification work다음과같은두가지 requirement에합의

there is a clear requirement, within 3GPP’s members, to develop SAE in a way that enables seamless interworking and migration with / from legacy GPRS networks there is a clear requirement, within 3GPP’s members, to develop SAE in a way that enables seamless interworking with non-3GPP accesses, such as WLAN or WiMAX

Stage2 TS 작업을위한두개의WI 승인 (2006.12)GPRS enhancements for LTE access: TS 23.401

LTE access 망을지원하기위해기존의 3GPP망을진화Architecture enhancements for non-3GPP accesses: TS 23.402

Non-3GPP access망과의 interworking 및 IETF 기반의 mobility protocol을활용


Architecture Reference ModelsArchitecture Reference Models


SAE Architecture ModelsSAE Architecture Models2 Tier model : Enhanced Node B Enhanced Node B –– Access GatewayAccess Gateway

Evolved RAN: eNode B기존WCDMA 시스템의 Node B와 RNC 기능일부

기존에 RNC에위치했었던 RLC 기능과RRC 기능을 eNode B에두기로결정

Evolved Core Network: MME/UPE, SAE gateway기존WCDMA 시스템의 SGSN과GGSN 기능일부MME/UPE의분리여부에대한논의가진행중

SAE GW: 3GPP anchor와 SAE anchor의기능논의중

RNC: Radio Network ControllerRLC: Radio Link Control RLC: Radio Link Control RRC: Radio Resource ControlMME: MME: Mobility Management EntityUPE: UPE: User Plane EntityHSS: Home Subscriber ServerPCRF: Policy and Charging Rule FunctionePDG: Evolved Packet Data GatewayGTP: GPRS Tunneling Protocol


SAEGateway

SGi

S4

S3

S1_UPE

S1_MME

PCRF

S7

S6a

HSS

Operator’s IP Services (e.g. IMS, PSS etc.)

Rx+

S10

MME/UPE

S5UE

GERAN

UTRANSGSN

“LTE-Uu”

LTE RAN

NonNon--roaming caseroaming case

SAEGateway

SGi

PCRF

S7

S6a

HSS

ePDG

S2b

Wn*

3GPP AAA Server

Operator’s IP

Services (e.g. IMS, PSS

etc.)

Wm*

Wx*

UntrustedNon-3GPP IP

Access

TrustedNon-3GPP IP Access

Wa*

Ta*

HPLMN

Non-3GPP Networks

S1_UPE

S1_MME

LTE RAN

2G/3G SGSN

MME/UPE

S4

S3

S5

S6c

Rx+

S2a

Architecture for non-3GPP Accesses within SAE (23.402 )

Architecture for 3GPP Accesses within SAE (23.401)


HPLMN

VPLMN

HSS

S8a

vSAEGateway

S4

S3

S1_UPE

S1_MME

S10

MME/UPE

UE

“LTE-Uu”

GERAN

UTRANSGSN

hSAEGateway

SGi

PCRF

S7

Operator’s IP Services (e.g. IMS, PSS etc.)

Rx+

S6a

S5LTE RAN

Roaming case Roaming case -- Home routed trafficHome routed traffic

Architecture for 3GPP Accesses within SAE (23.401)

vSAEGateway

SGi

hPCRF

S7S6a

HSS

ePDG

S2b

Wn*

3GPP AAA Proxy

Operator’s IP Services

(e.g. IMS, PSS etc.)

Wm*

Wx*

UntrustedNon-3GPP IP

Access

TrustedNon-3GPP IP Access

Wa*

Ta*

hSAEGateway

S8bHPLMN

Wd*

Non-3GPP Networks

S1_UPE

S1_MME

LTE RAN

2G/3G SGSN

vPCRFMME/UPE

S4

S3

S9

S7

S5

S6d

3GPP AAA Server

VPLMN

Rx+

S2aS2a

S2b

S6c

Architecture for non-3GPP Accesses within SAE (23.402)


Issues on reference pointsIssues on reference pointsS5S5: between MME/UPE and SAE Gateway

It support GTP (23.401) or IETF based protocol (23.402)2 different roaming interfaces:

S8a S8a – legacy evolution: GTP protocol을사용한 GPRS망과의 migration (23.401) S8bS8b – IETF based : IETF 기반의 mobility protocol (Mobile IP) 사용 (23.402)

2 interfaces for Non-3GPP accessS2aS2a: between SAE Gateway and ePDG. It support IETF protocol (23.402)S2bS2b: between SAE Gateway and Trusted Non-3GPP IP Access. It support IETF based protocol (23.402)


ArchitectureArchitecture에에 관한관한 Open IssuesOpen IssuesPDCP functionality의 location GGSN functionality의위치MME와 UPE의분리여부3GPP anchor와 SAE anchor의분리여부Roaming interface를위한 protocol (GTP vs. IETF protocol)Initial attach를위한 protocol (GTP vs. IETF protocol)Policy & ChargingHSPA+ (Evolved High Speed Packet Access) 를고려한 Migration


Mobility ManagementsMobility Managements


Mobility Management of SAEMobility Management of SAE1. Intra LTE Access system Mobility

1) Mobility management between 3GPP access systems

2. Inter access Mobility

1) Mobility within LTE Access system

2) Mobility management between 3GPP access systems and non-3GPP access systems


(1) (1) Inter access MobilityInter access Mobility

Handover between 3GPP access systems – GTP based solution

L2 handover단말입장에서 IP layer의변화가없음


(2) Inter access Mobility(2) Inter access Mobility

Handover between 3GPP and non-3GPP– MIP solution이대세

L3 handoveralternative solutions

Host-based Mobility Management Solutions

MIPv4 with FA-CoAMIPv4 with Co-CoA MIPv6 HMIPv6 DSMIPv6 DSMIPv4

Network-based Mobility Management Solutions

NETLMM PMIPv4 MIPv6

Open IssuesMIPv4/MIPv6 vs. DSMIPv6 Proxy MIP vs. Client MIPHA의위치latency


Initial attachInitial attachSAE를고려한 UE 요구사항

LTE accessibleGTP based protocolIETF based protocol

non-3GPP 연동I-WLAN, WiMax, 3GPP2, etc.

Initial attach using GTP

Attach usingIETF protocol


Mobile IPMobile IPMobility protocol

Client Mobile IP Proxy Mobile IP

Mobile IP versionMobile IPv4Mobile IPv6

Non- 3GPP IP accessUE

L2

L1L1

L2

IPv6IPv6/CMIPv6

HA (SAE GW)

L2

L1

L2

L1

UE

L2

L1

L2

L1

L2

L1

L2

L1

Non- 3GPP IP access HA (SAE GW)

IPv6CMIPv6

IPv6IPv6

CMIPv6IPv6/CMIPv6

Non- 3GPP IP access

L2

L1

HA (SAE GW)

L2

L1

UE

L2

L1

L2

L1

L2

L1

L2

L1

Non- 3GPP IP access HA (SAE GW)

PMIPv6PMIPv6IPv6/PMIPv6 IPv4/IPv6 IPv4/IPv6IPv6/PMIPv6

S2 S2

S2 S2

Cf. Cf. 현재현재 논의논의 중인중인 Protocol stackProtocol stack


OperatorsOperators’’ ViewsViews


System Architecture EvolutionSystem Architecture Evolution

Vodafone/CingularVodafone/Cingular-기존의 3GPP망을유지하려는보수적인입장

- HSPA+에적극관심*Vodafone: SAE TS 23.401 rapporteur활동

NTT DoCoMoNTT DoCoMo- Non-3GPP망의연동을통한 All-IP 망으로의진화관심

- Network based MM(PMIP) 지지- 3GPP2/WiMax와의협력강조* SAE TS 23.402 주도

TT--mobile/Orangemobile/Orange- WLAN과의연동에특히많은관심

- SAE의상용화에앞서보다향상된 I-WLAN 서비스를제공하고자함

- Voice call continuity 요구

Sprint/China MobileSprint/China Mobile/Telecom Italia/Telecom Italia

- Non-3GPP망의연동에관심(WLAN, WiMax, 3GPP2)

ePDG

SAE GWMME/UPE

Operator IP service Network

Operator IP service Network

eNodeB

RNCNodeB

SGSN

RNC


Abbreviations (1)Abbreviations (1)3GPP (3rd Generation Partnership Project)3GPP WG RAN (3GPP Working Group Radio Access Network)3GPP WG SA (3GPP Working Group Service and System Aspects)ARP (Allocation and Retention Priority)DSMIP (Dual Stack Mobile IP)EDGE (Enhanced Data rates for Global Evolution)ePDG (Evolved Packet Data Gateway)GERAN (GSM EDGE Radio Access Network)GGSN (Gateway GPRS Support Node)GPRS (General Packet Radio Service)GSM (The Global System for Mobile Communications)GTP (The GPRS Tunneling Protocol)HMIP (Hierarchical Mobile IP)HSPA+ (Evolved High Speed Packet Access)HSS (Home Subscriber Server) IMS (IP Multimedia Service)LTE (Long Term Evolution)


Abbreviations (2)Abbreviations (2)MIP (Mobile IP)MME (Mobility Management Entity)NETLMM (Network-based Localized Mobility Management)PCRF (Policy and Charging Rule Function) PSS (Packet-switched Streaming Service)RLC (RLC: Radio Link Control )RNC (Radio Network Controller)RRC (Radio Resource Control)SAE (System Architecture Evolution)SGSN (Serving GPRS Support Node)UMTS (Universal Mobile Telecommunications System)UPE (User Plane Entity)UTRA (UMTS Terrestrial Radio Access)UTRAN (UMTS Terrestrial Radio Access Network)WCDMA (Wideband Code Division Multiple Access)WiMax (Worldwide Interoperability for Microwave Access)WLAN (Wireless Local Area Network)


References (1)References (1)[Work Plan]

3GPP TD SP-060937: 3GPP SAE/LTE Work Plan (2006/12 기준)[SAE WID]

Stage1/Stage23GPP TD SP-060926: 3GPP system Architecture Evolution Specification

Stage33GPP TD CP-060649: CT aspects of System Architecture Evolution

[LTE WID]3GPP TD RP-060635 : 3G Long Term Evolution (Feature level, approved at TSG RAN #32)3GPP TD RP-060630 : 3G Long Term Evolution (Building block description)

Physical LayerRadio Interface Layer 2 and 3 Protocol AspecteUTRAN InterfacesRF Radio Transmission/Reception, System Performance Requirements and Conformance TestingTerminal Conformance Test Specifications

[3GPP Specification] http://www.3gpp.org/ftp/Specs/html-info/status-report.htm[3GPP official docs] ftp://ftp.3gpp.org/

http://www.3gpp.org/ftp/Specs/html-info/status-report.htm

ftp://ftp.3gpp.org/


References (2)References (2)[SAE TR]

TR 23.882: 3GPP System Architecture EvolutionTR 22.978 : ALL-IP Network feasibility study (Rel-7)

[LTE TR]TR 25.913 : Requirements for Evolved UTRA and Evolved UTRANTR 25.912: Feasibility study for evolved Universal Terrestrial Radio Access (UTRA) and Universal Terrestrial Radio Access Network (UTRAN) TR 25.813: Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Radio interface protocol aspects TR 25.814: Physical layer aspect for evolved Universal Terrestrial Radio Access (UTRA) TR R3.018 Evolved UTRA and UTRAN; Radio Access Architecture and Interfaces


References (3)References (3)[SAE TS]

Stage1TS 22.278: Service requirements for evolution of the system architecture

Stage2TS 23.401: GPRS enhancements for LTE accessTS 23.402: Architecture enhancements for non-3GPP accesses

Stage3TS 24.8bc: Technical Report of CT WG1 aspects of SAE TS 29.8bc: Technical Report of CT WG3 aspects of SAE TS 29.8bc: Technical Report of CT WG4 aspects of SAE *Note) the correct numbers of CT spec. are not valid yet.


References (4)References (4)[LTE RAN TS]

RAN1TS 36.201 Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer; General description . TS 36.211 Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation . TS 36.212 Evolved Universal Terrestrial Radio Access (E-UTRA); Multiplexing and channel coding . TS 36.213 Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures . TS 36.214 Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer; Measurements

RAN2TS 36.300 Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access (E-UTRAN); Overall description; Stage 2 . *Note) the correct numbers of RAN2 spec. are not valid yet.


References (5)References (5)RAN3

TS 36.401 Evolved Universal Terrestrial Radio Access (E-UTRAN); Architecture description . TS 36.410 Evolved Universal Terrestrial Radio Access (E-UTRAN); S1 general aspects and principles . TS 36.411 Evolved Universal Terrestrial Radio Access (E-UTRAN); S1 layer 1 . TS 36.412 Evolved Universal Terrestrial Radio Access (E-UTRAN); S1 signalling transport . TS 36.413 Evolved Universal Terrestrial Radio Access (E-UTRAN); S1 protocol specification . TS 36.414 Evolved Universal Terrestrial Radio Access (E-UTRAN); S1 data transport . TS 36.420 Evolved Universal Terrestrial Radio Access (E-UTRAN); X2 general aspects and principles . TS 36.421 Evolved Universal Terrestrial Radio Access (E-UTRAN); X2 layer 1 . TS 36.422 Evolved Universal Terrestrial Radio Access (E-UTRAN); X2 signalling transport . TS 36.423 Evolved Universal Terrestrial Radio Access (E-UTRAN); X2 protocol specification . TS 36.424 Evolved Universal Terrestrial Radio Access (E-UTRAN); X2 data transport


Hyunsook KimHyunsook Kim(([email protected]@lge.com))

3GPP SAE 기술동향 - HSNold.hsn.or.kr/hsn2007/document/9/VII-3.pdf · 2014-04-03 · *Vodafone: SAE TS 23.401 rapporteur활동 NTT DoCoMo-Non-3GPP망의연동을 통한All-IP...

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