LTE World Summit 2012 Doug alston sprint-tues


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LTE World Summit Barcelona May 2012

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LTE World Summit 2012 Doug alston sprint-tues

  1. 1. Diameter Signaling inthe Mobile NetworkAn Operators PerspectiveMay 22, 2012Douglas AlstonDirector, Technology Strategy & Architecture
  2. 2. Introduction • DIAMETER is the evolution of the RADIUS protocol that was created for remote access AAA functions • DIAMETER is the standard network interface protocol for IMS and the 4G EPC • Mobile operators face capacity challenges stemming from insatiable customer demand for data servicesDIAMETER signaling is a top-of-mind issue for operators building networksthat are reliable, cost-effective, and support increasing customer demands 2
  3. 3. Growing Data Traffic: The Operator’s DilemmaSource: Chetan Sharma Consulting, 2010 Operators must support capacity demands and maintain margins 3
  4. 4. Smart Data Devices: A Growing Concern1200 Data Consumption by Device Type * 900 (MB/mo) 600 300 0 2G 3G Android iPhone iPadSmart Devices generate ~8x signaling of data cards*US smartphone penetration reached 50% Jan 2012**Global smartphone penetration about 15% 2011E**** Chetan Sharma Consulting, 2010** Nelson, 2012*** KCPB October 2011 “Always On” Smart Devices drive data consumption and signaling traffic; Penetration growth shows no signs of abating 4
  5. 5. DIAMETER vs RADIUS Characteristics RADIUS DIAMETER Transport Protocol Connectionless Connection oriented Security Hop-by-hop Hop-by-hop and end-to-end Capabilities Negotiation No support Negotiate application support and security level Peer Discovery Static configuration Static configuration and dynamic lookup User Specific Commands Vendor specific attributes only Vendor specific messages and attributes DIAMETER Applications extend the protocol beyond AAA functions (e.g. Mobile IP, SIP, IMS, Policy, and Charging Control) DIAMETER is Reliable, Secure, Scalable, and Flexible 5
  6. 6. Managing Signaling in the EPC AA • Personal Functions • Device Call/Session • Data Sessions Setup & • VoIP Calling Teardown • Keep Alive Traffic • Charging records and billing controls Charging Controls • Quota management • On/Off Line • Inter-system Roaming Roaming/Handover • Topology Hiding • Load Balancing Policy • Dynamic Traffic Mngmt & Control Management • QoS Optimizing Diameter signaling is key for operator efficiency 6
  7. 7. DIAMETER Routing is EssentialIssues/Concerns Advantages/Benefits• Many more platforms • Robust Failover• Balancing server loading • Load Balancing• Managing outages/failures • Fewer Links• Monetizing signaling network • Manageability Streamlining signaling links with DIAMETER Routing will enhance operator efficiency and reliability
  8. 8. DIAMETER Challenges and Opportunities • Managing continuously evolving standards > Adding new AVPs > Adding new core network elements > Adding new services (e.g. IMS) • Managing and optimizing signaling traffic on the core network > Numerous links and DIAMETER applications > Core and end-user devices/applications • Managing new monetization opportunities > Opening signaling interfaces to third-party providers/customers Carriers need to leverage flexibility of Diameter to create new revenue opportunities and mange the signaling tsunami 8
  9. 9. Thank You…© 2012 Sprint. This information is subject to Sprint policies regarding use and is the property of Sprint and/or its relevant affiliates and may containrestricted, confidential or privileged materials intended for the sole use of the intended recipient. Any review, use, distribution or disclosure isprohibited without authorization.