Ericsson Service Aware Support Node

The Service-Aware Support Node (SASN) is a tool for traffic inspection in multi-vendor and multi-access networks. Its main applications are policy control and charging in mobile broadband networks.

Gain visibility and control

The combination of flat-rate offerings and peer-to-peer applications poses an increased risk for you as an operator in terms of securing a positive user experience for subscribers and getting a sound return on their investments.

The real-time functionality provided by the SASN gives you greater control of the resource allocation, and truly flexible charging options. When implemented together with our Service-Aware Policy Controller, traffic from individual subscribers and specific applications can be managed to optimize the utilization of network resources.

Traffic inspection is the foundation for this functionality. It is based on advanced deep-packet inspection mechanisms and heuristic analysis (similar to pattern recognition), and enables identification of virtually any type of application. The software is continuously developed to support the identification of new protocols and applications as they are introduced.

Generating new revenues

Today's users want fair, transparent charging that makes sense to them. The SASN helps make this possible.

Traditionally, data services have been charged according to traffic volume. The SASN allows you to take content, effective usage time and events into consideration. This can then be used to provide charging models that best reflect the value of the services being offered.

As well as attracting new subscribers, this type of fair pricing can increase usage while securing loyalty and keeping churn on a minimum level.

The statistical features of the SASN also provide the means to evaluate the effect of marketing campaigns - information that can be used to further improve service offerings.

Full range of capabilities

The SASN is one way to implement the traffic inspection engine of our Service-Aware Charging and Control solution. The engine can also be integrated with our gateway nodes; Gateway GPRS Support Node (GGSN) and Mobile Packet Gateway (MPG). It is a key component in our Evolved Packet Core offering.

As a stand-alone node, the SASN can easily be implemented in multi-vendor and multi-access network environments. It sits alongside the gateway nodes mentioned above in GSM, WCDMA and LTE core networks - or the Packet Data Support Node (PDSN) in CDMA networks - and interworks with policy control and charging elements.

The capabilities of the node include: 

  • Traffic inspection for a wide range of protocols
  • Policy control (e.g. fair usage policies)
  • Advanced traffic management
  • Content filtering and insertion
  • Collection of statistics
  • Support for real-time charging
  • Support for post-paid and pre-paid users