Scope

This page discusses the possibilities for PM streaming. In D-Release a use case and effort driven PM streaming of non-standardized VES message was implemented.

Forward looking a (more) standardized way of PM streaming should be evaluated.

O-RAN OAM Interface Specification

The O-RAN Operation and Maintenance Interface Specification v10.00 from June 2023 refers in chapter 6.3.2 Performance Data Streaming to the websocket protocol based on the requirements documented in 3GPP TS 28.550 v17.1.0 clause 5.2.3. With respect to the data model the specification references 3GPP TS 28.532 v17.3.0 clause 11.5.1.1.2.

Idea

Data Model
- SerializationFormat : GPB ( > /[Google] Protocol Buffers )
- yang to GPB (https://en.wikipedia.org/wiki/Protocol_Buffers)
- 3GPP-xml > yang > GPB
  - (fallback for O-DU (if needed) 3GPP-xml → yang → JSON → VES-stndDefined)

file-based

file ready
filtered message based on the rApp Subscription

Info: xml to s3 and kafka for control

Flow
- MNS (SMO) - does the subscription on the node
  - node starts streaming
  - messages to SMO as GPB
    - GPB termination
      - <here the magic happens>
      - → send json to kafka

AI Martin Skorupski

description and explain PM- job
show example of the GPB data format

Protocol
- HTTP2
- websocket

Overview of "possibilities"

E2

O1 file base

O1 streaming

O2 DMS

O2 IMS

others

Protocol

SCTP
(Stream Control Transmission Protocol)

FTP(es)

websocket

?

?

gRPC

gNMI

UDP/TCP

TCP

http/2

Modelling Language

ASN.1

3GPP XML

(xsd: 3GPP TS 28.550 Annex C)

ASN.1

GBP

(xsd: 3GPP TS 28.550 Annex C)
requires manual translation from xsd to GBP

The measData.xsd should be converged with a xslt to a measData.proto3 file.

?

?

GPB

yang->GBP

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