1 Introduction

Oracle Communications Cloud Native Core, Binding Support Function (BSF) is a key component of the 5G Service Based Architecture. The Binding Support Function (BSF) allows Policy Control Function (PCF) to register, update, and remove the binding information from it, and allows Network Function (NF) consumers to discover the selected Policy Control Function.

The BSF stores the binding information for a certain PDU sessions and discovers the selected Policy Control Function according to the binding information. It also acts as diameter proxy agent or diameter redirect agent to Rx requests targeting an IP address of a UE to the selected Policy Control Function.

For any AF using Rx, such as P-CSCF, the Binding Support Function determines the selected Policy Control Function address according to the information carried by the incoming Rx requests.

The BSF provides a PDU session binding functionality, which ensures that an Application Function (AF) request for a certain PDU Session reaches the relevant PCF holding the PDU Session information.

BSF supports the following functions:
  • Allows BSF users to register, discover, and remove the binding information
  • Allows network function consumers to retrieve the binding information

Note:

The performance and capacity of the BSF system may vary based on the call model, Feature/Interface configuration, and underlying CNE and hardware environment.

For more information, see Oracle Communications Cloud Native Core, Binding Support Function User Guide.

1.1 Purpose and Scope

This document is designed to help operators in measuring the performance and capacity of BSF application, and deployment environment setup software such as Cloud Native Environment (CNE) and cnDBTier.

It is recommended that BSF is run through a benchmark on the target cloud native infrastructure to determine the capacity and performance in the target infrastructure. This information can be used to adjust the initial deployment resources for BSF. These recommendations are just guidelines, since the actual performance of the BSF can vary significantly based on the details of the infrastructure.

1.2 References

  • Oracle Communications Cloud Native Core, Binding Support Function Installation, Upgrade, and Fault Recovery Guide
  • Oracle Communications Cloud Native Core, Binding Support Function User Guide
  • Oracle Communications Cloud Native Core, Cloud Native Environment Installation, Upgrade, and Fault Recovery Guide
  • Oracle Communications Cloud Native Core, cnDBTier Installation, Upgrade, and Fault Recovery Guide