Transcript 3GPP Beijing Workshop SA

3GPP and Fixed Mobile
Convergence
TSG-SA presentation
Stephen Hayes, SA chairman
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Topics to Discuss
• Brief Overview of TSG-SA
• Role of 3GPP in Fixed Mobile
Convergence
• UMA and Fixed Mobile Convergence
• IMS and Fixed Mobile Convergence
• Future Work
• Conclusions
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3GPP SA
• SA = System Aspects
• Technical Responsibilities
– Requirements Establishment
– Architecture Definition
– System Devices (Security, Codecs, O&M)
• Organizational Responsibilities
– Project coordination
– Release scheduling and planning
– Working methods
• Working Groups
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SA1 – Services
SA2 – Architecture
SA3 – Security
SA4 – Codecs
SA5 – O&M (including Charging)
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Two Paths to Fixed Mobile
Convergence
• UMA (Unlicensed Mobile Access)
• IMS (IP Multimedia Subsystem)
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3GPP Taking the Lead in
FMC
• 3GPP specified IMS as part of Rel 5 with
improvements in Rel 6
• 3GPP specified UMA as part of Rel 6
• 3GPP added support for I-WLAN in Rel 6
• 3GPP is enhancing IMS to support fixed broadband in
Rel 7
• 3GPP adding Voice Call Continuity in Rel 7
• Many IMS based optimizations in Rel 7
• IMS Based Multimedia services in Rel 7
Rel 99
1999
2000
Rel 4
2001
Rel 5
2002
Rel 6
2003
2004
Rel 7
?
2005
2006
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UMA (Unlicensed Mobile
Access)
• Standardized in 3GPP GERAN
• Called GAN in 3GPP
• Originally developed as a way to extend
coverage/reduce cellular congestion
• Extends GSM call control to
WLAN/Bluetooth accesses
• Handset uses GSM/GPRS call control
• PLMN services provided
• Transparent to mobile core network
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UMA (GAN) Concept
Cellular Access Network
UMA
enabled
dual
mode
handset
Private
Network
BSC
Mobile
Core
Network
IP Access
Network
GANC
Generic Access Network
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Uptake of UMA for FMC
• UMA used in many early fixed mobile
convergence deployments
• UMA incorporated into FMCA PRDs
• UMA specified as part of Packetcable 1.5
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IMS
• SIP/SDP based session control
• Protocols are access independent
• Originally developed as a way to provide
multimedia services in 3GPP
• Greater integration with IP network
• Intended for support of HPLM based
multimedia applications
• Basis of most NGN work
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IMS is Access
Independent (in Theory)
LTE
HSPA+
HSPA
TDSCDMA
3GPP2
MDN
802.11
Non-3GPP
Defined
Radio
Accesses
802.x
IMS
3GPP
WCDMA
Defined
Radio
EDGE
Accesses
GPRS
For Packet
DSL
Cable
Fixed
Accesses
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Organizations using IMS
CSI
VCC
Presence
Cellular Access to IMS
GLMS
PoC
Messaging
IP
Multimedia
Telephony
Multimedia
Telephony
Multimedia
Telephony
Wireline Access to IMS
WLAN Access to IMS
Mobile
Residential
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3GPP coordination of IMS
• 3GPP Maintains Control of IMS Core Specs
• Goal is to have a single IMS
• Other organizations submit requirements for
additions to IMS Core
• 3GPP works closely with IETF on SIP usage
• Overlapping membership/common delegates
• Workshops held as needed
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This requires enhancing IMS
beyond just the needs of mobile
• Example additions done for TISPAN
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NAT Traversal
Extensions for ISUP compatibility
Alternative authentication methods
Border Control Functionality
Terminology Changes
• However some additions also needed by mobile
operators
– Regulatory compliance
• Emergency Call, Legal Intercept
– Supplementary Service analogs
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Work also going on to aid
CS->IMS Transition
• CSI (Combinational Services)
– Complement CS services with IMS services
• VCC (Voice Call Continuity)
– Voice handovers between IMS and CS bearers
• Multimedia Service Definition
– Robust interoperable multimedia telephony
• Improving IMS quality
– Faster session setup, improved performance,
better voice quality
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3GPP R7 WIDs related to IMS
Multimedia Telephony (MITe)
Voice Call Continuity (VCC)
Combinational Services (CSI)
Generic VoIP Improvements
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IMS Emergency Calls (EMC1) – SA1/SA2/CT1
Lawful Intercept for VoIP (LI-7A) – SA3 LI
System Enhancements for Fixed Broadband Access to IMS (FBI, ISE) – SA2/SA3/SA5/CT1,CT3
Evolution of Policy Control and Charging (PCC) – SA2,SA5, CT3
IMS Trace & E2E IMS Trace (OAM7-Trace) – SA5,CT1
O&M Enhancements to support IMS & IP bearers – SA5
IMS Security Extensions – SA3
Diameter of the PDG Wi Interface (DIAMWi)– CT3
Support of SMS & MMS over generic 3GPP IP Access (SMSIP) – SA2
Identification of Communication Services in IMS (servID) – SA2,CT1
Optimizations for Multimedia Telephony over IMS – SA4
IMS Multimedia Telephony; media handling and interaction – SA4
Characterization of Adaptive Jitter Management Performance for VoIP Services (OMTIMS) – SA4
End-to-End Multimedia Services Performance Metrics (E2EMSPM) – SA4
Multimedia Interworking between IMS & CS Networks – CT3
Study on IMS Enhancements and Optimisations for Real Time Communication – SA2
Multimedia Priority Service – SA1
RAN Improvements
GERAN Improvements
I-WLAN Improvements
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Enhancement of Radio Perf for VoIMS
(voIMS) – SA2
Continuous Connectivity – RAN1
Delay Optimization for CS & PS
(RANimp) – RAN2
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Support of Conversational
Services in A/Gb mode via
the PS Domain (SCSAGB)
– GERAN1, GERAN2
Future GERAN Evolution
(FGE) - GERANx
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LCS for 3GPP Interworking
WLAN (LCS3-IWLAN) –
SA2,SA3
Enhancement to support
QoS provisioning over
3GPP/WLAN Interworking
(WLAN-SC) – SA2
*Study Items Marked in Red
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Uptake of IMS for FMC
• Adopted by many organizations
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3GPP2 (MDN)
TISPAN NGN Rel 1 (and subsequent releases)
ATIS NGN Focus Group
ITU-T SG19 (FMC)
Cablelabs (Packetcable 2.0)
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The Challenge of IMS
• 3GPP is chartered to develop systems for mobile
operators
• 3GPP membership is primarily mobile operators
and vendors
• Maintaining a “common IMS” extends slightly
outside of the 3GPP charter
• Reconciling requirements from different industry
segments (which sometimes compete) is never
easy.
• The benefits of a “common IMS” make it worth
the headaches.
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3GPP Work after Rel-7
• 3GPP has long term studies ongoing
– All IP Network (AIPN)
– Evolved radio accesses (LTE)
– System Architecture Evolution (SAE)
• This work will leverage and are expected
to be optimized for IMS
• New organizations may adopt IMS
• It is expected 3GPP will continue to get
requirements in to enhance IMS
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Conclusions
• 3GPP is currently taking the lead in FMC
standardization
• Widespread industry acceptance of UMA
• Widespread industry acceptance of IMS
• IMS is the path for NGN, but constant
vigilance is required to ensure there is
only one IMS.
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