PCRF as an EPC component

Uploaded on

Evolution of mobile technologies, Evolved Packet core, management of Policy and Recharge through PCRF.

Evolution of mobile technologies, Evolved Packet core, management of Policy and Recharge through PCRF.

More in: Technology
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
No Downloads


Total Views
On Slideshare
From Embeds
Number of Embeds



Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

    No notes for slide


  • 1. PCRF From pre-LTE to Broadband
  • 2. Layout ● ● ● ● ● ● ● History. EPC as a concept. Objectives of EPC. Major functions of EPC. Policy and Charging Control. Benefits of Policy Control. Where it fits in Broadband network.
  • 3. History I came, I saw, I conquered ! Julius Caesar
  • 4. History - Basic Cellular Architecture
  • 5. History - Cell Network Data - GPRS (115 kbps) - EDGE (473 kbps) - UMTS (2 Mbps) - HSDPA (14 Mbps) - LTE (100 Mbps)
  • 6. EPC - Need and Standardization ● ● ● ● Explosion in Data traffic and usage patterns. Advance in microchip technology. 3GPP. Standardization benefits: ○ Freedom in choosing a vendor. ○ Market Expansion, cost reduction, increasd benefits.
  • 7. EPC ● 3GPP work on SAE (system architecture evolution) work item. ● SAE was responsible for EPC (Evolved Packet Core Network) as an all-IP solution. ● EPC is designed to support high bandwidth services at high data rates.
  • 8. EPC - Objectives ● New core network architecture to support high data rate and reduced latency. ● To support mobility between multiple heterogeneous access systems (WiMAX, CDMA, 3G, 2G). ● All IP architecture, to enhance the capability of 3GPP systems to cope with rapid growths in IP data traffic.
  • 9. EPC - Major Functions ● ● ● ● ● Authentication and Security. Policy and Charging Control and QoS. Packet Routing. Mobility Management. IP Address Allocation.
  • 10. EPC - Policy& Charging Control and QoS ● ● ● ● ● ● Segmented data plans. Traffic & quota management. Roaming. Bill shock prevention. Personalized alerts and promotions. Congestion control.
  • 11. EPC - Policy & Charging Control and QoS
  • 12. SPR ● Subscription profile repository. ● contains information such as user specific policies and data needed for subscriptionbased policies and bearer level charging rules by the PCRF.
  • 13. Online Charging System ● OCS ● Credit management system for prepaid charging.
  • 14. Offline Charging System ● OFCS. ● Receives events from the PCEF and generates charging data records (CDRs) for the billing system.
  • 15. Application Function ● AF ● Offers applications that require the control of IP bearer resources. ● Communicates with the PCRF to transfer dynamic service information.
  • 16. PCEF ● Enforces gating and QoS for individual IP flows on the behalf of the PCRF. ● Provides usage measurement to support customer charging. ● BRAS, BNG, ISG.
  • 17. PCRF ● Policy and charging rules function. ● Provides policy control and flow based charging control decisions. ● Receives session information from Application function (AF) over Rx interface, subscription information from SPR over Sp interface as well as information from the access network via the Gx. ● Takes all the information and configured operator policies then creates a service session level policy decisions which are being enforced by PCEF.
  • 18. Mapping to Broadband