VoLTE and the Service Delivery Engine
A Sandvine Technology Showcase
The Policy and Charging Rules Function (PCRF) is the key element that enables the transition to and reliable operation of Voice over LTE (VoLTE) services.
But with critical voice services now sharing the pipe with other data services like web browsing, video and social media, the ability to manage the speed, quality, volume and diameter signaling associated with VoLTE is critical to providing a differentiated experience.
Additionally, although the LTE network provides a framework for signaling application QoS, CSPs need to verify the actual quality experienced by subscribers who have purchased VoLTE services.
The upgrade cycle to support VoLTE can be leveraged by CSPs as an opportunity to consolidate their control plane architecture by introducing a universal PCRF. Such a device goes beyond enabling VoLTE, to:
- leverage the LTE QoS architecture to enable use cases including quality-protection for non-IMS voice services, video applications, and gaming services
- simplify policy control across all access technologies (e.g., 2G, 3G, CDMA, LTE, Cable, DSL, WiFi, etc.), by deploying a single system that can make decisions and enforce policies across multiple standards
In short, a capable PCRF offers CSPs the opportunity to save costs and deploy additional revenue-generating services that capitalize on the new QoS capabilities of the LTE network.
The Sandvine Service Delivery Engine (SDE) is this universal PCRF, and this paper explains how it can change the way you think about network policy control.