Mobile IPv6:Mobile IPv6:Mobile IPv6:Mobile IPv6:A Key Enabler for WLAN to A Key Enabler for WLAN to A Key Enabler for WLAN to A Key Enabler for WLAN to

GPGPGPGPRS InteroperabilityRS InteroperabilityRS InteroperabilityRS InteroperabilityPhil Roberts

Director of Mobile Architecture for MegistoChairman of Mobile IP WG in IETF

Quick IntroductionQuick Introduction… just so you know where we’re coming from …

is a young company, founded by mobile & Internet communications industry veterans, that is developing a Mobile Internet Service Gateway to help mobile operators deliver new and profitable data services.

Mobile Network Operator (MNO) Challenge

Mobile Network Operator (MNO) Challenge

• Phone penetrations at or near saturation

• New voice-based revenue opportunities are limited

• Data services are considered the new opportunity

• Large 3G spectrum investments have already been made

• Rapid ROIs are required for any new investment

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VoiceVoiceVoiceVoicePenetrationPenetrationPenetrationPenetrationSubscriberSubscriberSubscriberSubscriberGrowthGrowthGrowthGrowthDataDataDataDataPenetrationPenetrationPenetrationPenetration

General Packet Radio Service (GPRS) Overview

General Packet Radio Service (GPRS) Overview

• Packet data service overlay on GSM network

• Shares air with circuit voice and provides always-on access at moderate data rates

• Standardized and in commercial service now

2G-2.5G

BSC

PSTN

MSC

HLR

SCP

SGSN

IP

GRX

RNC

3G

GGSN

Intranet,Internet,

EnterprisesM-ASPs

Subscriber Services LAN

MobileSwitching

Center

BSCs

Base Stations(Cell Sites)

HLR, VLR

MobilePacketCore

AccessNodes Gateways

Public SwitchedTelephone Network

Charging Mediation System

2.5G Network Infrastructure2.5G Network Infrastructure

IP interface

IP interface

Non IP interfaces

Key Benefits Available NowKey Benefits Available Now• IP layer access to attached devices

(internetworking with any connected IP network)

• IP roaming within GPRS networks (via GRX or any other IP transit network for that matter)

• QoS-ready with key specifications for QoS within the GSM network completed

• IPv6 to handsets standardized as an option

IntranetInternet

EnterpriseM-ASPs

Subscriber Services LAN

MobileSwitching

Center

RNCs

Base Stations(Cell Sites)

HLR, VLR

MobilePacketCoreAccess

NodesGateways

Public SwitchedTelephone Network

Charging Mediation System

3G Network Infrastructure (IMS)

3G Network Infrastructure (IMS)

Non IP interfaces

IPv4 interface

IPv4 interface

IPv6 interface

IP MultimediaSubsystem

IPv4

Key Capabilities in Tomorrow’s Networks

Key Capabilities in Tomorrow’s Networks

• IP Multimedia Services capability• IP v6 to mobile device mandated as only IP

protocol for IP Multimedia Service– Opens up possibilities of newer cleaner network operation

• Reuse of GPRS features– Uses all existing support for mobility among GSM networks– Supports seamless operation and end-to-end QoS

• Extend all services across all radio access networks

Public WLAN Hotspots – MNO Threat!

Public WLAN Hotspots – MNO Threat!

• Easy to deploy• Unlicensed (and low

cost!) spectrum• Alternate access

Providers• Services could

siphon mobile data revenue from MNOs

2.5G3G

WLAN(Office)

WLAN(Hotel)

WLAN(Home)

MNOServiceCore

EnterpriseApps

PublicInternet

VPN Tunnel

Public WLAN Hotspot – MNO Opportunity!

Public WLAN Hotspot – MNO Opportunity!

• MNOs have existing service and billing relationship with large customer base

• MNOs have established and reliable “wireless” brand

• Delivery of consistent network services over 2.5G/3G and hot-spot environments provides value

• Hot-spots provide an inexpensive and high performance spectrum alternative

2.5G3G

WLAN(Office)

WLAN(Hotel)

WLAN(Home)

MNOServiceCore

EnterpriseApps

PublicInternet

Universal Mobile Core Network

GGSN

Mobile IP v6 Operation w/GPRS

Mobile IP v6 Operation w/GPRS

SGSN

Remote PLMN

SGSN

Internet

WLAN

Router

Mobile Node on Home NetworkGGSN enabled as a Home Agent

Host

IP Traffic withAnother Host

GTP over IPv4 w/V6 traffic type

Mobile IP v6 Operation w/GPRS

Mobile IP v6 Operation w/GPRS

SGSN

Remote PLMN

SGSN

Internet

WLAN

Router

Mobile Node Moves toNew GPRS Network

GPRS Roaming (GTP) means mobile still at home from IP Point-of-view

Host

IP Traffic withAnother Host

GGSN

GTP over IPv4 w/V6 traffic type

Mobile IP v6 Operation w/GPRS

Mobile IP v6 Operation w/GPRS

SGSN

Remote PLMN

SGSN

Internet

WLAN

Router

Mobile Node RoamsTo Wireless LAN

Mobile Node RegistersWith Mobile IP Home Agent

Host

IP Traffic withAnother Host

GGSN

Mobile IP v6 Operation w/GPRS

Mobile IP v6 Operation w/GPRS

SGSN

Remote PLMN

SGSN

Internet

WLAN

Router

Host

Traffic Flows DirectlyBetween MN and Correspondent

Note: any node thatwants to reach the MNcan do so at any time viaits home address

MIP Home Agent function in effectGGSN

Mobile IPv6 StatusMobile IPv6 Status• Standards progress

– Internet draft – Goal to be through working group last call March 22– Significant activity with respect to Mobile IPv6 security

issues• Secure route optimization• Tightening up some other loose ends

• Implementation status– Several implementations exist– Most have to be updated to come in line with standard

Universal Mobility: The Best of All Worlds

Universal Mobility: The Best of All Worlds

• The customer wins– Good performance in

high-density hotspots– Simplified access to

hotspot– Single billing partner– Consistent access to

home services regardless of radio interface

– Use of common 802.11 PCMCIA cards

• The operator wins– Retains customer mind

share and revenue– Augments network air

capacity in high-density locations

– Reduces need for complex pico-cell build-out in hotspots

– Flexible deployment in advance of Release 5

IP v6 Business Case?IP v6 Business Case?• Wireless Provides an Important Impetus

– A sudden influx of connected terminals– Step up in the number of consumed addresses

(per terminal and per visited network)– Need for good mobility support– Need for clean support of peer-to-peer and push

services• Allows for a step to a cleaner architecture• 3gpp has taken a decision that it is the only

protocol for IP Multimedia Services

SummarySummary• Universal Mobility is Another Compelling

Service for MNOs• IP v6 and Mobile IP combine well for Mobile

Network Operators to provide value add for customers– Universal mobility with MIP v6 centered in an MNO– Operator can maintain subscriber awareness and

provide subscriber specific services with v6 as a natural transition from v4