Why We Need Policy Control on the Client Device
Growing consumer demand for smart phones, coupled with the continuing performance growth of such devices, means mobile users are increasingly using applications that make bandwidth and connection demands of the carrier network. There is already a lot of data traffic on mobile networks and at peak periods that might mean congestion and slower access to data.
Network Operators, in order to deal with such demand, deploy network-based PCRF and PCEF/TDF solutions that respond to the network traffic at that particular time and offer a level of control according to various access policies.
The 3GPP framework architecture for Policy and Charging Control specifies the PCRF and other essential elements, such as the PCEF and TDF. The PCEF is concerned with reporting user-initiated events and enforcing relevant policy decisions made by the PCRF, while the TDF detects and manages traffic. As such, the PCEF and TDF are critical entities for creating the appropriate level of choice for data traffic as well as ensuring optimal user experience.
The current 3GPP architecture proposes deployment of the PCEF/TDF functions in the network but it can only respond to up-stream traffic after it has left the RAN and entered the network, and cannot fully protect against contention for resources in the RAN itself.
This is where network operators are faced with a problem. As the number of smarter mobile devices increases, so too does the need for improved mobile services that match the user profile, sending more strain upstream to the RAN where there are limited resources. The solution is to extend the PCEF functionality to the mobile devices.
Find out how by attending our presentation at IIR’s Mobile Broadband World Conference 2012! If you are unable to attend in person, our presentation will be available on Slideshare after the event.