IMS-based Network Convergence : Architecture and QoSC0%CC%BC%BA%… · FOCUS ON YOUR REVENUE...
-
Upload
truongdieu -
Category
Documents
-
view
218 -
download
1
Transcript of IMS-based Network Convergence : Architecture and QoSC0%CC%BC%BA%… · FOCUS ON YOUR REVENUE...
KRnet 2006, Seoul
Sungwon Lee / Ph.D
Mobile WiMAX Solution Team, TN-Division(Email : [email protected])
IMS-based Network Convergence :
Architecture and QoS
IMSIMS--based Network Convergence :based Network Convergence :
Architecture and Architecture and QoS QoS
1/39
Ice BreakIce Break
What's Going On?What's Going On?
Where We Are?Where We Are?
IMS OverviewIMS Overview
IMS TechnologyIMS Technology
ConclusionConclusion
ContentsContents
2/39
Ice BreakIce Break
3/39
Ice-Break Question.1Ice-Break Question.1
Who is Telco Operator, and its Telco Services ?Who is Telco Operator, and its Telco Services ?
U-OperatorU-Operator V-OperatorV-Operator W-OperatorW-Operator
PresenceInstant Messaging
VoIPConference Call
File TransferVoice Mail
SMS Information QueryInternet/Desktop Search
Satellite Image NavigationMAP Service
(Text) Language TranslationPersonal Blog
Word/Excel/PresentationPhoto Edit/Share
PresenceInstant Messaging
VoIPConference Call
File TransferVoice Mail
SMS Information QueryInternet/Desktop Search
Satellite Image NavigationMAP Service
(Text) Language TranslationPersonal Blog
Word/Excel/PresentationPhoto Edit/Share
PresenceInstant Messaging
VoIPConference Call
File TransferVoice Mail
PresenceInstant Messaging
VoIPConference Call
File TransferVoice Mail
PresenceInstant Messaging
VoIPConference Call
File TransferVoice/Photo Mail
PSTN/Cellular VoiceVideo ContentsGame ContentsRing-Back-Tone
Wall-PaperScheduled Call ForwardingCall-ID/Call Management
Address-Book ManagementCalendar/Schedule Mgnt.
PresenceInstant Messaging
VoIPConference Call
File TransferVoice/Photo Mail
PSTN/Cellular VoiceVideo ContentsGame ContentsRing-Back-Tone
Wall-PaperScheduled Call ForwardingCall-ID/Call Management
Address-Book ManagementCalendar/Schedule Mgnt.
4/39
Ice-Break Question.2Ice-Break Question.2
What terminal type are used by Telco Operators ?What terminal type are used by Telco Operators ?
Desktop PC
Notebook PC
Dual-mode Phone
WiFi Phone
Bluetooth Phone
DECT Phone
Desktop PC
Notebook PC
Dual-mode Phone
WiFi Phone
Bluetooth Phone
DECT Phone
Desktop PC
Notebook PC
Dual-mode Phone
PSTN Phone
Cellular Phone
Desktop PC
Notebook PC
Dual-mode Phone
PSTN Phone
Cellular Phone
Desktop PC
Notebook PC
Desktop PC
Notebook PC
U-TypesU-Types V-TypesV-Types W-TypesW-Types
5/39
Ice-Break Question.3Ice-Break Question.3
What terminals are used by Telco Operators ?What terminals are used by Telco Operators ?
6/39
Ice-Break So What ?Ice-Break So What ?
시사점시사점
IT와 Telco의 서비스를구분하기 어려운세상의 도래
유선/무선/IT 단말의경계가 무너진 세상의도래
데이터특성에 적응하는무선/복합단말시대의 도래
IT와 Telco의 서비스를구분하기 어려운세상의 도래
유선/무선/IT 단말의경계가 무너진 세상의도래
데이터특성에 적응하는무선/복합단말시대의 도래
7/39
Ice-Break Is Korea different ?Ice-Break Is Korea different ?
((Reference : Reference : 일간일간 디지탈타임즈디지탈타임즈))
Domestic A-OperatorDomestic A-Operator종합미디어그룹 표방
IHQ 지분 인수통한 연예기획/게임개발/영화제작/드라마제작 연계
음반업체인 YBM서울음반 인수 및자사 음악서비스연계
TU 미디어 통한 위성 DMB 개시
종합미디어그룹 표방
IHQ 지분 인수통한 연예기획/게임개발/영화제작/드라마제작 연계
음반업체인 YBM서울음반 인수 및자사 음악서비스연계
TU 미디어 통한 위성 DMB 개시
Domestic B-OperatorDomestic B-Operator그룹차원의 ‘콘텐츠사업 협의회’ 출범
MP3 음원 포탈강화
게임포탈 강화
삼성전자 제휴통한 홈네트워크 및 컨텐츠 사업 부문강화
BcN, VoIP, WLAN, WiBro 통한 유무선통합 사업자 추진
그룹차원의 ‘콘텐츠사업 협의회’ 출범
MP3 음원 포탈강화
게임포탈 강화
삼성전자 제휴통한 홈네트워크 및 컨텐츠 사업 부문강화
BcN, VoIP, WLAN, WiBro 통한 유무선통합 사업자 추진
8/39
What’s Going On?What’s Going On?
9/39
What’s going on? Sad history in our countryWhat’s going on? Sad history in our country
음성/데이터/영상/멀티미디어
통신시대를열자!
음성/데이터/영상/멀티미디어
통신시대를열자!
ISDNISDN
음성/데이터/영상/멀티미디어
통신시대를열자!
음성/데이터/영상/멀티미디어
통신시대를열자!
ATMATM
왜 10년넘도록같은이야기를해야하지?왜 10년넘도록같은이야기를해야하지?
현재현재
1:N, M:N 통신시장을열자
1:N, M:N 통신시장을열자
ISDNISDN
1:N, M:N 통신시장을열자!
1:N, M:N 통신시장을열자!
ATMATM
왜 1:N, M:N 통신시장이 안 열릴까?왜 1:N, M:N 통신시장이 안 열릴까?
현재현재
Chapter 1Chapter 1
Chapter 2Chapter 2
10/39
What’s going on? Some history of neighbor countryWhat’s going on? Some history of neighbor country
Chapter 1Chapter 1
Chapter 2Chapter 2
TCP/IP 인터넷기술을만들어보자
TCP/IP 인터넷기술을만들어보자
협대역 IP협대역 IP
광대역 IP 망과SIP으로뭔가
잼있는걸 해보자.
광대역 IP 망과SIP으로뭔가
잼있는걸 해보자.
광대역 IP광대역 IP
음성/데이터/영상/멀티미디어
통신시대를열자!
음성/데이터/영상/멀티미디어
통신시대를열자!
현재현재
간단한문자나몇줄 보내보자간단한문자나몇줄 보내보자
협대역 IP협대역 IP
IM으로 1:N, M:N은자연스러운
통신 방법/수단
IM으로 1:N, M:N은자연스러운
통신 방법/수단
광대역 IP광대역 IP
문자외음성/멀티미디어컨텐츠의 1:N, M:N 통신을하자!
문자외음성/멀티미디어컨텐츠의 1:N, M:N 통신을하자!
현재현재
11/39
Where We Are ?Where We Are ?
12/39
Telco vs. IT ?Telco vs. IT ?
Where are we going? SolutionsWhere are we going? Solutions
WARWARWAR PEACEPEACEPEACE
Make your choice !Make your choice !
OROROR
13/39
Where are we going? Telco meets ITWhere are we going? Telco meets IT
Telco 요구Telco 요구
표준화된 서비스 및인터페이스
안정된 QoS 보장 방안
다양한과금 방안
신뢰성있는 보안 방안
국제/국내 사업자간로밍 방안
수익성있는 서비스 제공
표준화된 서비스 및인터페이스
안정된 QoS 보장 방안
다양한과금 방안
신뢰성있는 보안 방안
국제/국내 사업자간로밍 방안
수익성있는 서비스 제공
IT 요구IT 요구
표준화된 서비스 및인터페이스
개방형개발 환경
신속한제품/서비스 적용 용이
국제/국내 사업자간호환 용이
QoS/과금/보안 기능기본 제공
표준화된 서비스 및인터페이스
개방형개발 환경
신속한제품/서비스 적용 용이
국제/국내 사업자간호환 용이
QoS/과금/보안 기능기본 제공
IMS IMS 통한통한 TelcoTelco와와 ITIT의의 IP IP 기반기반 컨버전스컨버전스
14/39
IMS SummaryIMS Summary
SIPProtocol
StandardService
IntegratedBilling Standard
User/ServiceQoSIMS
(VoIP & SIP Service as Killer Application)
WirelineWirelineNGN/NGN/BcNBcN
33GPP2GPP2CDMA2000
Wireline Wireline ExtensionExtension(ITU/ETSI)(ITU/ETSI)
OMA : Open Mobile Alliance
33GPPGPPWCDMA WiBroWiBro OMAOMA
WiFi & Others
Standard AllStandard All--IPIPMobile ServiceMobile Service
IMS는 Telco 입장에서정의한표준화된 SIP서비스, 과금및 QoS 제어규격IMS는 Telco 입장에서정의한표준화된 SIP서비스, 과금및 QoS 제어규격
15/39
IMS OverviewIMS Overview
16/39
IMS CharacteristicsIMS Characteristics
Initially Defined by 3GPP
Builds on IETF protocols
All-IP protocols
Service & Control
Mixed Multimedia
Access Independent (Fixed & Mobile)
17/39
IMS Standard History IMS Standard History
2002 Jun. : 3GPP Rel.5 Closed - First & Base IMS platform
2004 Dec. : 3GPP Rel.6 Closed - Basic converged services
2005 Now : 3GPP Rel.7 Going - Emergency calls, Enhanced QoS, FMC
• ETSI/TISPAN working for fixed IMS
• OMA standardizing IMS services
18/39
IMS Standard Group Relationship IMS Standard Group Relationship
19/39
IMS Layered ArchitectureIMS Layered Architecture
Old FashionOld Fashion IMS StyleIMS Style
20/39
IMS Interoperable & Manageable ServiceIMS IMS IInteroperable & MManageable SService
Standardized environment for operators to manage IP multimedia communication sessions
Platform for application and service development
Access network independent
Approach to managed and cost-effective transition towards service centric world
IMS Terminal Equipment
IMS Terminal Equipment
AccessNetworkAccess
Network
IP CoreNetworkIP Core
Network
IMS Core NetworkIMS Core Network
IMS Application Servers
IMS Application Servers
IMS ServicesIMS Services
AuthenticationSession ControlChargingQoSRoamingSecurity
PresenceInstant MessageVoIPGamePoCAnd so on
TeliaSonera TeliaSonera (Reference : IMS Conference Asia (Reference : IMS Conference Asia ’’05)05)
21/39
IMS Standard ServicesIMS Standard Services
Presence-based servicesInstant messagingVoice Telephony (VoIP)Video TelephonyPush-to media services (push-to-talk/view/video)Content sharing / data transferGroup chatMultimedia StreamingWeb BrowsingMultiparty gamingPIM services, such as calendars and alertsMultimedia (Audio/Web/video) conferencing
….. And the list goes on
22/39
Benefits from Operator PerspectiveBenefits from Operator Perspective
FOCUS ON YOUR REVENUE CREATION !!FOCUS ON YOUR REVENUE CREATION !!
Single sign-on user authentication
One user data base / subscription handling
One multimedia session control
One billing interface & differentiated charging
One QoS interface & differentiated quality
One common foundation for fixed, mobile and enterprise
Pervasive standard based terminals, and systems
Smooth evolution of services
23/39
Benefits from Developer PerspectiveBenefits from Developer Perspective
FOCUS ON YOUR CORE COMPETENCE !!FOCUS ON YOUR CORE COMPETENCE !!
Enabling affordable, accelerated development and deployment
Manageable quality of service
Roaming freedom
High degree of interaction between mobile & fixed-line users
24/39
IMS TechnologyIMS Technology
25/39
IMS Basic Components OverallIMS Basic Components Overall
VisitedVisitedDomainDomain
HomeHomeDomainDomain
Sh• First contact point
• Provides provicy control and QoS authorization
• Local services, like emergency calls and local
numbering
Proxy-CSCF
Megaco
MGW
UAUA P-CSCFP-CSCF I-CSCFI-CSCF
HSS ASSLF
MRFCGm Mw Mw
Dx Cx ISC
Mrcompression
SIP SIP SIP
SIP
SIP
CxDiameter
Accesspoint to domain
Hides topology and
configuration
Interrogating-CSCF
• Session control services
• Registration, AS usage, charging, etc
Serving-CSCF
MGCFBGCF
S-CSCFS-CSCF
Mj
Mi Mg
Mc
MRFP
26/39
Home Subscriber Server (HSS)Home Subscriber Server (HSS)
HLR
Subscriber registration information management until Rel.4
HSS
Feature enhancement for IM CN Subsystem (includes AAA function)
HLR is subset of HSS
27/39
MGW (MGCF & IM-MGW)MGW (MGCF & IM-MGW)
MGCF (Media Gateway Control Function) Performs protocol conversion between ISUP and the IM subsystem call control protocols.Controls the parts of the call state that pertain to connection control for media channels in an IM-MGW.Communicates with CSCF.Selects the CSCF depending on the routing number for incoming calls from legacy networks.
IM-MGWMGW on IMS as like CS-MGW on CS Domain in R’4
28/39
Multimedia Resource Function (MRF)Multimedia Resource Function (MRF)
MRF = MRFC (Control Plane) + MRFP (Bearer Plane)
Multimedia conference control
Media conversion, mixing, trans-coding and processing
Multimedia message replay
Voice mail service
Tone announcement
29/39
Service InterfaceService Interface
Native SIP servicesSIP AS는 S-CSCF와 SIP interface를통해 서비스제공
CPL 또는 JAVA API 로 작성
Legacy IN servicesCAMEL (Customized Applications for Mobile Enhanced Logic)IM-SSF : interface between ISC and CAP
3rd party servicesOSA AS (Open Service Access Application Server)OSA SCS: interface between ISC and OSA API
30/39
IMS Architecture (Case: IMS to IMS)IMS Architecture (Case: IMS to IMS)
IMS
IMS
UTRAN
SGSN GGSNUE
PS Domain
UTRAN
SGSN GGSNUE
PS Domain
I-CSCFI-CSCF
Go Gi
I-CSCF
P-CSCFS-CSCF
Mw
I-CSCF
P-CSCFS-CSCF
Mw
HSS
Cx
Cx
HSS
Cx
Cx
Other IP/IMS network
Mm
Other IP/IMS network
Other IP/IMS network
Other IP/IMS network
Mm
CSCFs are the IMS entities responsible of the call control: there are 3 types of CSCFs depending on their role:•P-CSCF (Proxy CSCF)•S-CSCF (Serving CSCF)•I-CSCF (Interrogating CSCF)
The PS domain provides the IP bearer to access to the IMS, i.e. a PDP context.
The HSS holds the IMS service profile of the subscribers.
S-CSCF interconnects to external IP networks and other IMS networks.If THIG is used by the operator to hide its internal configuration, the connection to external networks goes through an I-CSCF.
GiGi
Traffic PlaneControl Plane
Ref) Steve TSANG-KWONG-U, France Telecom
31/39
IMS Architecture (Case: IMS to PSTN)IMS Architecture (Case: IMS to PSTN)
IMS
IMS
UTRAN
SGSN GGSNUE
PS Domain
UTRAN
SGSN GGSNUE
PS Domain
I-CSCFI-CSCF
Go Gi
I-CSCF
P-CSCFS-CSCF
Mw
I-CSCF
P-CSCFS-CSCF
Mw
HSS
Cx
Cx
HSS
Cx
Cx
Other IP/IMS network
Mm
Other IP/IMS network
Other IP/IMS network
Other IP/IMS network
Mm
SGWMGCF
BGCF
IMS-MGW
Legacy/PSTN
Mk
Mi
Mg
Mj
MnGi
SGWMGCF
BGCF
IMS-MGW
Legacy/PSTN
Legacy/PSTN
Mk
Mi
Mg
Mj
MnGi
MRF
Gi
Mr
MRF
Gi
Mr
Go
Gq
Go
GqThose entities are
responsible for interworking
between IMS and CS domain/PSTN
In Release 6, the PDF can be separated from the P-CSCF. Those two entities are then connected through the Gq interface.
The MRF is used for multiparty call
control
Traffic PlaneControl Plane
32/39
IMS Architecture (Case: Off-line Charging)IMS Architecture (Case: Off-line Charging)
IMSIMS
UTRAN
SGSN GGSNUE
PS Domain
UTRAN
SGSN GGSNUE
PS Domain
I-CSCF
I-CSCF
P-CSCFS-CSCF
HSS
Other IP/IMS network
Other IP/IMS network
SGWMGCF
BGCF
IMS-MGW
Legacy/PSTN
Legacy/PSTN
MRF
Traffic PlaneControl Plane
Rf
CCF
CGF
Ga
For offline Charging, CCF and CGF are responsible for collecting charging
information from PS domain and IMS entities.
Gz
33/39
IMS Call Flow Example (Case: IMS to IMS)IMS Call Flow Example (Case: IMS to IMS)
P-SCSFP-SCSFVisited B
S-CSCFS-CSCF
Home A
1. Invite
2. Invite
7
10
11 12
13
15
17
P-CSCFP-CSCFVisited A
18
AB
GGSNGGSNSGSNSGSN
Radio Access NetworkRadio Access Network
GGSNGGSNSGSNSGSN
Radio Access NetworkRadio Access Network
S-CSCFS-CSCF
Home B
8
I-CSCFI-CSCF
HSSHSS
9
14
6
3. CX-Query 4. CX-Query Resp
I-CSCFI-CSCF
HSSHSS
5. Invite
16. OK
Traffic Path
Signaling Path
34/39
QoS in IMSQoS in IMS
P-CSCF S-CSCF
SDP InspectionSDP Inspection
SDPSDP inspection performs based on Local Policy.
SDP inspection performs based on Local Policy or User Subscription
AS checks SDP and request confirmation for the resource reservation at the endpoint.
MSHSS/AAA
AS
Operator based Policy Information transfer to the S-CSCF when Registration-time
35/39
ConclusionConclusion
36/39
More? Why Service ? (Case: TeliaSonera)More? Why Service ? (Case: TeliaSonera)
Today’s revenues mainly from access
Role of access decreasing
Price pressure, cost-efficiency
Value moving towards services
Services main differentiator
Multiple services rather than one killer application
• Shorter service life-cycles
Service management and delivery in essential role
Terminals have key role in ensuring end-to-end QoS
Terminal diversity challenge
IMS as a future platform for service developmentIMS as a future platform for service development
((Reference : IMS Conference Asia Reference : IMS Conference Asia ’’05)05)
37/39
More? Why Service ? (Case: France Telecom)More? Why Service ? (Case: France Telecom)
Offer clients a New Experience in Telecom services
Give access to a whole world of services
“A new generation of telecom services
to change our everyday lives”
Change means providing both high value and simplicity
Move from “access to networks” to “access to services”
((Reference : Reference : NExTNExT Vision Presentation, June Vision Presentation, June ’’05)05)
38/39
More? Why Service ? (Case: British Telecom)More? Why Service ? (Case: British Telecom)
((Reference : IMS Conference Asia Reference : IMS Conference Asia ’’05)05)
39/39
Final VisionFinal Vision
Fast, Reliable and QoS GuaranteedFast, Reliable and QoS GuaranteedSeamless Active HandoffSeamless Active Handoff
Always Best ConnectedAlways Best ConnectedUbiquitous Networks & ServicesUbiquitous Networks & Services
CDMA2000CDMA20001X/DO/DV1X/DO/DV
WCDMA/WCDMA/HSDPAHSDPA
MobileMobileWiMAXWiMAX WLANWLAN Bluetooth/Bluetooth/
UWBUWB
Thank you!Thank you!Thank you!