Transcript 3GPP general presentation

Development and evolution of
3GPP Core Network
Hannu Hietalahti, CT chairman
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CT officials
• Chairman
– Hannu Hietalahti / Nokia (ETSI)
• Vice Chairs
– Gary Jones / T-Mobile (ATIS)
– Steve Mecrow / O2 (ETSI)
– Akishige Noda / Fujitsu (TTC)
• MCC Support
– Kimmo Kymalainen (MCC)
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CT ToR
• At discontinuation of TSG-T and TSG-CN the new TSG-CT
became the “core network and terminal” group
• Technical tasks
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Cellular and IMS protocols
CS and PS domain
UE L3 protocols (CT1)
Interworking with external networks (CT3)
Network interfaces (CT4)
Open Service Architecture, OSA (CT5)
Smart card applications (CT6)
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3GPP TSG CT
CT mission: services via any access network !
Common CN
GSM 1800 GSM 1900
GSM 900
GSM ph.1
GPRS
R97 R98
3G
EDGE
R99
?
HSxPA
WLAN
LTE
Rel-5/6 Rel-6/7 Rel-8 and onwards
...and let’s make it IP all the way to the terminal !
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IMS
SIP
• IP Multimedia Subsystem
• PS domain services only
• Bearer agnostic
IP
Multimedia
Core
Packetswitched
network
(2G or 3G
GPRS
or WLAN)
SIP
– GSM, UMTS, WLAN, fixed xDSL, HSxPA, 3.9G
• SIP / SDP driven sessions on whatever media
• Endpoint-to-endpoint or endpoint-to-service
– Multimedia, Messaging, Presence, etc
– The protocol is there, what are your application needs?
• IETF defined protocols re-used by 3GPP
– Initial version was frozen in Rel-5
– Improvements with more functionality in Rel-6
• Presence, messaging, multiple registration, forking,...
– Still more optimisations & new functionality in Rel-7
• Voice call continuity (between CS & PS), Combinational services (in CS & PS domain)
• Adaptation to TISPAN fixed network
• IMS emergency calls
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WLAN interworking
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Currently specified for IEEE 802.11, but not restricted to that version
Re-use of IEEE WLAN specifications
Definition of the architecture
Functionality
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Detection of the AP’s
Associating with AP
Detection of HPLMN connection
Authentication
Establishment of tunnel to HPLMN packet gateway
Voice call continuity in Rel-7
WLAN VPN access in Rel-7
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Some of the main Rel-7
work items
• CSI (CS and IMS combinational service)
– Requires both CS and PS connectivity at the same time
– CS domain voice call with additional information e.g. video clip via IMS
• VCC (Voice Call Continuity)
– Voice call continuity between CS domain and PS domain
– Transition between CS and PS cells without losing the call
• IMS evolution
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NGN, IMS over fixed access
IMS emergency calls based on SIP emergency sessions
IMS multimedia telephony
Conferencing and messaging enhancements (DM and BFCP)
• ...and several WLAN and traditional cellular protocol evolution work
items
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What’s next...
Stabilising Rel-7
Rel-8 Long Term Evolution
network architecture adapted via SAE to LTE radio
Migration from CS domain voice services
to PS domain IMS multimedia services
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