1 © NOKIA 3g-ipv6.PPT/17-03-2000

John John LoughneyLoughneyResearch Engineer / Project ManagerResearch Engineer / Project Manager

Nokia Research Center, HelsinkiNokia Research Center, Helsinki

IPv6 In 3G Core Networks

2 © NOKIA 3g-ipv6.PPT/17-03-2000

Table of Contents• Introduction

• 3G Architecture

• Some IPv6 benefits for 3G

• Drawbacks of IPv4

• Current 3G Network Architecture

• Conclusion

• Appendices• Current 3GPP Architecture

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Introduction

• 3G consists of several radio access technologies (WCDMA, EDGE, etc.)attached to a common core network.

• IPv6 is an option 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)

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SCPSCP

ApplicationApplicationserversservers

HSSHSSGr+Gr+

MAP+MAP+

CAPCAPWINWIN

PSTNPSTN

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3G RAN3G RANIuIu--PSPS

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ServiceServicecapabilitycapability

serversservers

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MAPMAPISIS--4141

IPv6IPv6AllAll--IP CoreIP Core MGWMGW

SIPSIPH.248H.248

WLAN, DSL,WLAN, DSL,cable...cable...

RASRAS

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FWFW

All-IP System Level Architecture

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IPv6 Benefits for 3G

• Protocol for bigger, better 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 a "Flow Label".

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IPv4 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 will be quite difficult.• IPv4 is running out of addresses.• Transition to IPv6 will take place - 3G will be the driver.

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IPv6 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 situations.

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Deployment 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.

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Deployment Scenarios (2/2)

3G Core Network

IPv6 NetworkIPv4 Internet

IPv6 Network

Dual Stack Router

Dual Stack Host

IPv6 Device

IPv6Device

3G Core Network

IPv4

Local servers(e.g., DNS, DHCP)

6to4Router

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Conclusions• 3G networks will be the ultimate driver for IPv6 deployment.

• 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.

• China stands in an important position to help bring this about.

• Since the Y2K problem was solved, then it must be time to address IPv6.

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Further Reading

•• Nokia 3G PageNokia 3G Page•• http://www.nokia.com/3g/index.htmlhttp://www.nokia.com/3g/index.html

•• IETF IPng Working GroupIETF IPng Working Group•• http://playground.sun.com/ipnghttp://playground.sun.com/ipng

•• Third Generation Partnership ProjectThird Generation Partnership Project•• http://www.3gpp.orghttp://www.3gpp.org

•• Third Generation Partnership Project (ANSI)Third Generation Partnership Project (ANSI)•• http://www.3gpp2.orghttp://www.3gpp2.org

•• IPv6 ForumIPv6 Forum•• http://www.ipv6forum.com/http://www.ipv6forum.com/

•• Internet Engineering Task ForceInternet Engineering Task Force•• http://www.ietf.orghttp://www.ietf.org

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Appendices

• 3GPP Release 1999 Protocol Stack

• 3GPP Release 1999 Architecture

• 3GPP Release 2000 Proposed All IP Architecture

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R99 Interfaces and ProtocolsUMTS User Plane

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UTRAN

RNS

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Rel. 99 Reference Architecture

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