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Content for  TS 28.311  Word version:  16.0.0

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1  ScopeWord‑p. 8
The present document contains the architecture, requirements, use cases, procedures and definitions of interfaces for policy management for 4G networks.

2  References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
ETSI GR NFV-IFA 023 (V3.1.1): "Network Function Virtualisation (NFV); Management and Orchestration; Report on Policy Management in MANO; Release 3".
[3]
TS 32.312: "Telecommunication management; Generic Integration Reference Point (IRP) management: Information Service (IS)".
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3  Definitions of terms, symbols and abbreviations

3.1  Terms

Void.

3.2  Symbols

Void.

3.3  Abbreviations

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
EM
Element Management
IRP
Integration Reference Point
NE
Network Element
NFVI
Network Functions Virtualization Infrastructure
NFVO
Network Functions Virtualization Orchestrator
NM
Network Management
PAF
Policy Administration Function
PF
Policy Function
VIM
Virtualized Infrastructure Manager
VNF
Virtualized Network Function
VNFM
VNF Manager
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4  OverviewWord‑p. 9
NFV policy management system may have policy conflict problem, which is a newly created policy may be conflict with an existing policy.
There are two potential policy conflict detection approaches, one is policy conflict detection in the Policy Function (PF), which makes the policy execution decisions, and the other one is policy conflict detection in the Policy Administration Function (PAF), which defines the network policy. There are multiple scenarios for policy conflict. For example, if the events are the same and the same condition are triggered (e.g. scaling policy on a VNF), but two policies have different actions, the conflict should be detected and resolved. It is not easy for one PF to resolve all of scenarios of the policy conflict. Hence, it is reasonable to enable PAF to resolve policy conflict, while the conflict detected by PAF or PF based on different specific scenarios, and the present document try to resolve the problem.
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