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