Policy charging and rules function

Policy charging and rules function

Policy and Charging Rules Function (PCRF) is the node designated in real-time to determine policy rules in a multimedia network.[1] As a policy tool, the PCRF plays a central role in next-generation networks.[2] Unlike earlier policy engines that were added on to an existing network to enforce policy, the PCRF is a software component that operates at the network core and efficiently accesses subscriber databases and other specialized functions, such as a charging systems, in a scalable, reliable, and centralized manner.[3] Because it operates in real time, the PCRF has an increased strategic significance and broader potential role than traditional policy engines. This has led to a proliferation of PCRF products since 2008.[4]

The PCRF is the part of the network architecture that aggregates information to and from the network, operational support systems, and other sources (such as portals) in real time, supporting the creation of rules and then automatically making intelligent policy decisions for each subscriber active on the network. Such a network might offer multiple services, quality of service (QoS) levels, and charging rules.[5]

References

  1. ^ Nair, Vikram. "Evolution of QoS and Charging Framework in WiMAX," WiMAX.com, http://www.wimax.com/commentary/spotlight/evolution-of-qos-and-charging-framework-in-wimax, accessed June 15, 2010.
  2. ^ Campbell, Ian and Chase Wolfinger. "PCRF and the Evolution of Networking." http://www.broadhop.com/products_pcrf_download.html
  3. ^ Campbell, Susan J. "Video Interview: BroadHop helps to overcome congestion," TMCnet April 2009. http://it.tmcnet.com/channels/network-management/articles/83582-video-interview-broadhop-helps-overcome-congestion.htm
  4. ^ Finnie, Graham. "Mobile Broadband & the Rise of Policy: Technology Review & Forecast," Heavy Reading August 2011. http://www.heavyreading.com/details.asp?sku_id=2718&skuitem_itemid=1339
  5. ^ McDaid, Cathal, "Overview and Comparison of QoS Control in Next Generation Networks," palowireless 3G/UMTS Resource Center. http://www.palowireless.com/3g/qos.asp. Accessed June 15, 2010.

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