Key drivers for LTE success: Services Evolution · SMS and Messaging over LTE LTE is packet only...
Transcript of Key drivers for LTE success: Services Evolution · SMS and Messaging over LTE LTE is packet only...
THE Mobile Broadband Standard
© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
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Key drivers for LTE success: Services Evolution
Balazs Bertenyi
Chairman of 3GPP TSG SA
THE Mobile Broadband Standard
© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
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Outline
Overall 3GPP work areas IMS – the service platform for operators • Multimedia Telephony (MMTel)
Policy Control evolution (PCC) Access discovery and selection (ANDSF) Machine Type Communications (MTC) Device-to-device communication (D2D) Regulatory features (disaster warning, emergency calls, priority service) • Public Warning System (PWS) • Priority Services
THE Mobile Broadband Standard
© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
Overall 3GPP work areas
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
IMS and its evolution (1/2)
Basic IP Multimedia standards have been available since 2003
• Gradual addition of functions has created a carrier grade service
platform
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2011 2010 2009 2008 2007 2006 2005 2004 2003 2002
R5 R6 R7 R8 R9 R11
IMS Created Multimedia
Telephony
Services
Created
Optimizations
& Quality
Improvements
Common
IMS
(cover:
Fixed,
Cable)
Basic Voice
Call Cont.
IMS
Central
Services
Unauth.
Emergency
Calls
Various
Enhancements
2012 2013
R10
Inter UE
transfer
Various
Other
Enhancements
THE Mobile Broadband Standard
© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
IMS and its evolution (2/2)
Work still ongoing on operational-related aspects • Jointly with the GSM Association on aspects of interconnect, roaming
and charging
• Local Breakout is utilized for connecting IMS media
• Optimized media path is important to reduce cost
• Legacy Charging Accounting and Interconnect principles should be re-used
Location requirements being addressed • Authorities in many countries require network-authenticated location
information stored for certain sessions (e.g. for court cases)
• Standards are being developped to address this
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
SMS and Messaging over LTE
LTE is packet only and hence does not natively support legacy SMS
IMS based messaging may not be available at initial LTE deployments
Standards were developed to deliver legacy SMS over LTE
• A device that is attached both to LTE and 2G/3G can send and receive
legacy SMS over the legacy CS core network
• Enhancements to the necessary interfaces were defined to pass SMS between legacy CS core and EPC/LTE
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
Policy Control (PCC)
The PCC framework allows QoS and Charging control of IP traffic
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Gy
Gz
Subscription Profile
Repository (SPR)
Rx
AF Sp
Gx
Offline
Charging
System
(OFCS) Gateway
PCEF
Policy and Charging Rules Function (PCRF)
Online Charging System (OCS)
Service Data F low
Based
Credit Control
Gxx
BBERF
Internet /
Operator IP
Services
THE Mobile Broadband Standard
© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
PCC evolution
The PCC framework has been further enhanced to give operators an even wider range of control tools
Support for sponsored data connectivity has been added
Service awareness, deeper lookup of packets is also supported
Handling of privacy policies has been standardized
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
Access Discovery and Selection (ANDSF)
EPC is a multi-access IP core system supporting both native 3GPP cellular
radio technologies and other IP access systems (802.x, etc…)
Legacy selection mechanisms have been available to choose a 3GPP cellular radio and PLMN
Additional standards were developed to take into account non-3GPP access technologies
• Access technology policies are uploaded to the device using Device Management procedures
Further work ongoing to fine-tune the granularity of the policies
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© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
Machine Type Communications (MTC)
M2M is recognized as a key segment in future packet networks
Initial 3GPP efforts have focused on the ability to differentiate machine-type devices • This allows the operator to selectively handle such devices in overload
situations
• Low priority indicator has been added to the relevant UE-network procedures
• Overload and Congestion control is done on both core network and radio access network based on this indicator
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
MTC – basic architecture
Work in progress…
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3GPP Boundary
MTC Server
GGSN / PGW / PDG
Proxy (TBD)
SGSN / MME
HLR / HSS
API MTCi
SMS-SC IP-SM-GW
Legacy SMS
IP SMS
MTCsp
Indirect model – service provider controlled
Indirect model – operator controlled Gr/S6a
Um / Uu /
LTE-Uu
RAN M2M
Application
Internal interfaces
(TBD)
Control plane User plane
Direct model Gi/SGi
M2M Application UE
MTC User
MTCsms
THE Mobile Broadband Standard
© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
Evolution of MTC
Further functionality being added to 3GPP standards in the following areas • Reachability Aspects, MTC Feature control, Device Triggering
• Addressing, Identifiers - especially removal of MSISDN dependencies in the architecture
• Signaling Optimizations
• Small Data Transmissions
• MTC Monitoring
• ….
MTC is a substantial technical area, full completion will span across multiple future Releases
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
Device-to-device Communication (D2D)
Proximity-based applications and services represent a recent and enormous social-technological trend • These applications and these services are based on the awareness that
two devices or two users are close to each other
• Awareness of proximity carries value, and generates demand for an exchange of traffic between them
Direct D2D communication is also essential for public safety services • e.g. in case of lack of network infrastructure in disaster situations)
3GPP has initated work on enhancing the LTE-EPC platform to support these capabilities
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
Regulatory features – disaster response
Recent events have brought the different disaster response functions of the 3G/4G networks to the forefront
• Public Warning System (PWS) provides a secure framework for delivering Warning Messages to the devices
• The Japanese version of this system saved thousands of lives in the recent earthquake/tsunami disaster
• Priority Services • Mechanisms have been standardized to allow priority access to the
network services (voice calls, Internet, multimedia calls, etc…) for e.g. government officials in the event of a mass disaster
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© 3GPP 2011 3GPP Seminar, LTE Asia , 6 September 2011
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Thank You
www.3gpp.org
More Information about 3GPP:
Balazs Bertenyi
3GPP TSG SA chairman
+36 20 9849152