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LTE roaming – a whole new world

LTE roaming – a whole new world. 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

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LTE roaming – a whole new world

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  1. LTE roaming – a whole new world

  2. 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 Acme Packet at a glance • Founded: 2000 • HQ: Bedford, MA USA • NASDAQ: APKT • 2010 revenue: $231.2M • 2010 net income: $43M • 575+ employees AT&T 3

  3. The all IP Future SS7 over TDM SS7 over IP (BICC/SIGTRAN) Diameter & SIP over IP 2011- 1990-2000 2001-2010 PSTN NGN IMS 2G 3G LTE Internet IMS Other IP networks PCRF Core P-GW EPC RAN S-GW 4GLTE/M-WiMAX eUTRAN EPS MME eUTRAN All services IMS/SIP services Data services Diameter Mobility tracking

  4. LTE roaming overview HSS PCRF PCRF MME Subscriber Data 4 • Attachment procedure • Authentication procedure • Update location procedure • Subscriber data retrieval procedure • Policy exchange Roaming border Visited network Home network 1 Attach 2 2 Authenticate Authenticate Update Location 3 Policy exchange 5

  5. Diameter is the key roaming protocol Home MNO Visited MNO Home MNO Visited MNO HSS PCRF PCRF MME • 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

  6. VoLTE roaming options Visited P-CSCF Visited Services Distributed Policy Control Home Routed PCRF H-PCRF PCRF PCRF V-PCRF eUTRAN eUTRAN eUTRAN eUTRAN • 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 Home network Visited network 7

  7. LTE roaming is all IP

  8. Roaming challenges Service provider A Service provider B Interoperability Security risk Scalability Network complexity & cost

  9. DoS protection Comprehensive L3-L5 interworking Intelligent routing Accounting/recording Roaming network requirements

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