lte roaming – a whole new world acme packet 3 session border control (sbc) category creator and...
TRANSCRIPT
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LTE roaming – a whole new world
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Acme Packet 3
• Session Border Control (SBC) category creator and leader with over 60% market share
• Mission: enable delivery of trusted, first-class interactive communications and data services across IP network borders
• 10,000+ systems in over 100+ countries
• 850+ service provider customers
• 240+ enterprise & contact center customers
• 100+ distribution & integration partners
• Experienced, long-standing leadership team
• Public company with strong financials
• Founded: 2000• HQ: Bedford, MA USA • NASDAQ: APKT• 2010 revenue: $231.2M• 2010 net income: $43M• 575+ employees
AT&T
Acme Packet at a glance
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Acme Packet
All servicesIMS/SIP servicesData servicesDiameterMobility tracking
4GLTE/M-WiMAXeUTRAN
EPC
PCRF
S-GW
MME
Internet Other IP networks
P-GW
IMS
eUTRAN
EPSRAN
Core
2001-2010
NGN
3G
SS7 over IP (BICC/
SIGTRAN)
2011-
Diameter & SIP
over IP
IMS
LTE
1990-2000
SS7 over TDM
PSTN
2G
The all IP Future
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Acme Packet
1. Attachment procedure
2. Authentication procedure
3. Update location procedure
4. Subscriber data retrieval procedure
5. Policy exchange
Home network
1 Attach
2 Authenticate 2
3
Visited network
HSSMME
Roaming border
Authenticate
Update Location
4Subscriber Data
5Policy exchange
PCRF PCRF
LTE roaming overview
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Acme Packet
Visited MNO
MME HSS
Home MNO
Visited MNO
PCRF
Home MNO
PCRF
• S6a Diameter (3GPP TS 23.401)
– AAA interface between visited MME and home HSS
– Transfers subscription, location and authentication data for authenticating user access to visited EPS
• S9 Diameter interface (TS 23.203)
– Policy interface between the Home PCRF and Visited PCRF
– Transfers QoS policy and charging control information
Diameter is the key roaming protocol
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Acme Packet7
Homenetwork
Visitednetwork eUTRAN
Home Routed
PCRF
eUTRAN
H-PCRF
V-PCRF
DistributedPolicy Control
eUTRAN
PCRF
VisitedP-CSCF
eUTRAN
PCRF
VisitedServices
• Home routed with data backhaul to home network (existing data model)
• Distributed policy control with policy interfaces
• Visited P-CSCF with policy control in visited network (selected by GSMA IR.92)
• Visited services with IMS core in visited network
VoLTE roaming options
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Acme Packet
3G LTE
Switching Circuit Packet
Voice bearer TDM voice Packet voice
Roaming signaling (policy exchange)
SS7 Diameter
Subscriber data HLR HSS
QoS element n/a PCRF
LTE roaming is all IP
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Acme Packet
Service provider BService provider A
Interoperability
Security risk
Scalability
Network complexity
& cost
Roaming challenges
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Acme Packet
• DoS protection
• Comprehensive L3-L5 interworking
• Intelligent routing
• Accounting/recording
Roaming network requirements
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