1 Introduction
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.
- Allows Policy Control Function users to register, update, and remove the binding information
- Allows NF consumers to retrieve the binding information
For more information, see Oracle Communications Cloud Native Binding Support Function User's Guide.
References
Refer to the following documents for more information about Cloud Native Binding Support Function.
- Cloud Native Environment Installation Document
- Binding Support Function Cloud Native User's Guide
Acronyms and Terminology
The following table provides information about the acronyms and the terminology used in the document.
Table 1-1 Acronyms and Terminology
| Acronym | Definition |
|---|---|
| 5GC | 5G Core Network |
| 5GS | 5G System |
| 5G-AN | 5G Access Network |
| 5G-EIR | 5G-Equipment Identity Register |
| 5G-GUTI | 5G Globally Unique Temporary Identifier |
| 5G-S-TMSI | 5G S-Temporary Mobile Subscription Identifier |
| 5QI | 5G QoS Identifier |
| AF | Application Function |
| AMF | Access and Mobility Management Function |
| AS | Access Stratum |
| AUSF | Authentication Server Function |
| BSF | Binding Support Function |
| CAPIF | Common API Framework for 3GPP northbound APIs |
| CUSTOMER_REPO | The docker registry address in customer side, plus Port No. if registry has port attached |
| IMAGE_TAG |
The image tag from release tar file is 1.4.0, You can decide to use any tag No. Then push related docker image with that specific tag to their registry |
| METALLB_ADDRESS_POOL | The address pool which configured on metallb to provide external IPs |
| MPS | Multimedia Priority Service |
| N3IWF | Non-3GPP InterWorking Function |
| NAI | Network Access Identifier |
| NEF | Network Exposure Function |
| NF | Network Function |
| NGAP | Next Generation Application Protocol |
| NR | New Radio |
| NRF | Network Repository Function |
| NSI ID | Network Slice Instance Identifier |
| NSSAI | Network Slice Selection Assistance Information |
| NSSF | Network Slice Selection Function |
| NSSP | Network Slice Selection Policy |
| NWDAF | Network Data Analytics Function |
| PCF | Policy Control Function |
| PDR | Packet Detection Rule |
| PEI | Permanent Equipment Identifier |
| PER | Packet Error Rate |
| PFD | Packet Flow Description |
| PPD | Paging Policy Differentiation |
| PPF | Paging Proceed Flag |
| PPI | Paging Policy Indicator |
| PSA | PDU Session Anchor |
| QFI | QoS Flow Identifier |
| QoE | Quality of Experience |
| (R)AN | (Radio) Access Network |
| RQA | Reflective QoS Attribute |
| RQI | Reflective QoS Indication |
| SA NR | Standalone New Radio |
| SBA | Service Based Architecture |
| SBI | Service Based Interface |
| SD | Slice Differentiator |
| SEAF | Security Anchor Functionality |
| SEPP | Security Edge Protection Proxy |
| SMF | Session Management Function |
| SMSF | Short Message Service Function |
| S-NSSAI | Single Network Slice Selection Assistance Information |
| SSC | Session and Service Continuity |
| SSCMSP | Session and Service Continuity Mode Selection Policy |
| UDM | Unified Data Management |
| UDR | Unified Data Repository |
| UDSF | Unstructured Data Storage Function |