IPv6 and 3G/UMTS Mobile Core Networks

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7 Σεπ 2011 (πριν από 6 χρόνια και 2 μήνες)

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Trends in Internet. 3G Architecture. Some IPv6 benefits for 3G. Drawbacks of IPv4. Current 3G Network Architecture. Conclusion. Current 3GPP Architecture.

IPv6 and 3G/UMTS Mobile Core Networks
IPv6 and 3G/UMTS Mobile Core Networks
Asko Räsänen
Asko Räsänen
asko.r asko.ra as sanen anen@nokia.com @nokia.com
1 © NOKIA AR / 05-2000Table of Contents
 Trends in Internet
 Introduction
 3G Architecture
 Some IPv6 benefits for 3G
 Drawbacks of IPv4
 Current 3G Network Architecture
 Conclusion
 Appendices
 Current 3GPP Architecture
2 © NOKIA AR / 05-2000Internet history
# of connected
PERSONAL
terminals
COMMUNICATION
INFORMATION
COMPUTER
RETRIEVAL
AGE
1970 1980 1990 2000
From computer connections to person-to-person communications
3 © NOKIA AR / 05-2000Internet Growth
 Mobility as a standard of communication
10 000
24% total traffic - 240% CAGR
8 000
30% total traffic - 75% CAGR
6 000
46% total traffic - 26% CAGR
4 000
Business Solutions incl.
Mobile intranet
2 000
Mobile Internet
Person-to-Person Consumer
0
Year
4 © NOKIA AR / 05-2000
Total Terabytes per Month
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005Introduction
 3G consists of several radio access networks (WCDMA, EDGE)
attached to a common core network.
 IPv6 is supported in the current 3GPP specifications.
 Specifications for an IP-based 3G network are currently being
developed.
 Two levels of IP protocols in IP based 3G Networks.
 Transport level (Network layer transport)
 Application level (IP Telephony layer)
5 © NOKIA AR / 05-2000All-IP System Level Architecture
App Applicatio lication n
server servers s
Se Serv rviic ce e
capabil capabiliity ty
SCP SCP
HSS HSS
servers
servers
OSA
OSA
CA CAP P
Gr Gr+ +
WIN
WIN
MAP+ MAP+
Iu-PS
Iu-PS
SG SGSN SN
3G RAN PSTN
3G RAN PSTN
TSGW
TSGW
GG GGSN SN IPv6
IPv6
ISUP
ISUP
MGW MGW
All-IP Core
All-IP Core
RA RAS S
Le Leg ga ac cy y
RSGW
RSGW
WLAN, DSL,
WLAN, DSL,
Cellula Cellular r
MAP MAP
cable...
cable...
IS-41
IS-41
SI SIP P
FW FW
H.24 H.248 8
CS CSCF CF
MGCF
MGCF
MRF
MRF
Internet
Internet
CSCF Call State Control Function MRF Multimedia Resource Function
HSS Home Subscriber Server RAS Remote Access Server (DSLAM, head end…)
MGCF Media Gateway Control Function RSGW Roaming Signaling Gateway
MGW Media Gateway TSGW Transport Signaling Gate
6 © NOKIA AR / 05-2000IPv6 Benefits for 3G
 Protocol for bigger, better quality Internet.
 Address Space Problem
 There will be billions of mobile terminals when the first IP
based 3G networks are deployed.
 Since these terminals should have IP addresses, the address
space for IPv4 is not sufficient.
 The lack of IPv4 addresses will be first felt in Asia.
 Autoconfiguration
 IPv6 includes address autoconfiguration, which can help
network administrators in configuring the networks.
 Security and mobility built-in
 Global address facilitate end-to-end security.
 IPv6 includes packet encryption and source authentication.
 To support real-time traffic, IPv6 has "Flow Label".
7 © NOKIA AR / 05-2000IPv4 Successes
 Behind huge success of Internet:
 “Everything” supports IPv4
 3G network architecture is considered because synergy with
existing Internet
 …but
 Security issues are unsolved.
 IPv4 requires the use of NAT between operators and even within
large operators - which will be expensive and hard to manage.
 Global roaming could be quite difficult.
 IPv4 is running out of addresses.
 Transition to IPv6 will take place - 3G will be the driver.
8 © NOKIA AR / 05-2000IPv6 Deployment Problems
 Existing operator networks & hardware are based on IPv4.
 Extensions to legacy call control protocols may be required
by IPv6.
 Support for legacy IPv4 systems.
 Interworking with existing IPv4 networks.
 But, there are solutions for these problems, the trick is
picking the proper solutions for the correct problems.
9 © NOKIA AR / 05-2000Deployment Scenarios (1/2)
 Operator deployment decision:
 Interoperability problems may exists, due to existing equipment,
operators may end up of selecting IPv4
 IPv4 and the IPv6 are not directly compatible, protocol
interworking / conversion / tunneling is needed
 3G networks are fully IPv6 based at deployment on both transport
and application level.
 The solution is future proof, backward compatible and
interoperability is assured.
10 © NOKIA AR / 05-2000Deployment Scenarios (2/2)
IPv4
Dual
IPv6
Stack
Device
Device
3G Core Network
IPv6 Network
Dual Stack
Router
IPv4 Internet
Local servers
(e.g., DNS, DHCP)
Dual Stack
Router
Dual
IPv6 Network
Stack
Host
11 © NOKIA AR / 05-2000Conclusions
 Services are the key to 3G/UMTS success.
 3G networks will be the ultimate driver for IPv6 deployment.
 Addresses are needed.
 The inter-working between the legacy IPv4 network and the 3G IPv6
network can be handled at the borders.
 3G Core Networks should be IPv6 based right from the start:
 The transition period between the legacy IPv4 networks and the
IPv6 networks will be considerably shorter.
 Less time, money and effort will be spent on fixing problems
caused by IPv4.
 IPv6 + 3G = the Mobile Information Society.
12 © NOKIA AR / 05-2000Further Reading
 Nokia 3G Page
 Nokia 3G Page
 http://www.nokia.com/3g/index.html
 http://www.nokia.com/3g/index.html
 IETF IPng Working Group
 IETF IPng Working Group
 http://playground.sun.com/ipng
 http://playground.sun.com/ipng
  Thi Thir rd Generati d Generation Partnershi on Partnership p P Pr roj oject ect
 http://www.3gpp.org
 http://www.3gpp.org
  Thi Thir rd Generati d Generation Partnershi on Partnership p P Pr roj oject ect (ANSI) (ANSI)
 http://www.3gpp2.org
 http://www.3gpp2.org
 IPv6 Forum
 IPv6 Forum
 http://www.ipv6forum.com/
 http://www.ipv6forum.com/
 Internet Engineering Task Force
 Internet Engineering Task Force
  http://www.ietf.org
http://www.ietf.org
13 © NOKIA AR / 05-2000Thank you !
14 © NOKIA AR / 05-2000