RPMO Introduction

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RPMO introduction

Top right corner for field-mark, customer or partner logotypes. See Best practice for example.

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Base concept

RPMO—Real-time Performance Monitoring.– an OSS feature – Fetch the data, process and export real-time information about the

network or cell behaviour.

Advantage– The R-PMO collects all the cell related measurements data at

regular intervals for defined duration and pass this information to OSS for presentation.

– The R-PMO provides the radio network optimizer with presentation of quality and traffic related monitors in real time.

– The R-PMO can be used for fast reaction to suspected problems and thus help in troubleshooting.

– The R-PMO offered several types of reports.


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R-PMO Architecture

R-PMO is one of function within OSS.

TCP/IP

OSSOSSR-PMOR-PMO

X.25

IOG/APG 40

BSC


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Pre-Requirements

OSS RC1.1 (Radio & Core) and above versions. R-PMO Feature installed in OSS. Activation of RTED (Real Time Event Data) Feature in BSC to

enable recordings. BSC with STOC (Signaling Terminal for Open Communication)

Feature. This functionality enable communication from BSC to RPMO. This would additionally required a physical cable from BSC to OSS.

An IP address to communicate OSS and BSC. To Support RTED, One Dedicated RPG3 (AXE 810) or RPG2E

(BYB501) is required RTED in not supported in Mixed (BYB202-BYB501) combination


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Get Started with R-PMO

Step 1– Go to OSS Network

Explorer on Common Desk Environment of OSS

Step 2– Click on Performance

Step 3– Go to GSM RNO tools

Step 4– Select R-PMO

This window will appear


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System Defined Reports for Network Analysis

Circuit Switched Reports – TCH Traffic Report– Quality Report– TCH Drop Report– TCH/SDCCH Handover

Report– SDCCH Traffic Report– Multi Band Cell Report

Packet Switched Reports – GPRS/EGPRS Overview

Report– Data Related– GPRS/EGPRS Overview

Report– Performance Related

– GPRS/EGPRS TBF Release Report

– GPRS/EGPRS Multislot Utilization Report


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Example---TCH drops Report


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GUI interface in R-PMO---Main window

The Main window in R-PMO shows the activated system defined Report


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GUI interface in R-PMO---Table window

In R-PMO Table window– The report is updated

every minute – N/A means data “Not

Available” – The user can select

between 1 minute up to 60 minutes(1,15,30 or 60Minutes

– Data is only shown for one hour and only saved for one hour

– The columns and data can be sorted in the way that the user wants


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GUI interface in R-PMO---Graph window

The graph window views one graph for each monitor (window) and the selected cells appears in every graph with the same color.

The graph can be paused. The user can Drag and Drop

cells and monitors into the graph.

The graph has the same resolution as the table window had when the graph was opened.


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Set handler in R-PMO

Cell sets are created using the Set Handler available from the R-PMO main window.

Cells can then be added to and removed from cell sets by using the Set Handler.

When a cell set is deleted all reports that belong to the set will automatically be deactivated.


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Report Customization in R-PMO

Create User Defined Report – click on “Report” icon

from the menu bar and select subtitle “New user report definition”.

Combining the Reports in One Report

– User can select different parameters from two reports and combine into one report


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Out Put for Post-Processing ---REDE (Raw Event Data Export)

This function is used for storing any events and measurements that are provided by the R-PMO , in a file. The format of the file can be tab separated or XML

The format of the file can be tab separated or XML

Post processing tool for R-PMO out put is ”Tems Visualization”


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Out Put for Post-Processing ---R-PMO Event Log

This is simple XML file, generated by R-PMO after collecting the events and measurements for the a particular cell set for analysis very similar to Layer-3 Message analysis


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Further Developments

RTED (Real Time Event Data) Enabling improved functionality in R-PMO:

– Add RXQUAL for CHGR level– Improved monitoring of GPRS/EDGE separately– Improved event monitoring capacity– Support for monitoring new features:

Dual Transfer Mode Mega BSC – 2000 TRXs Extended Dynamic Allocation


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Limitation Observed

Below are some dimensioning or application issues related to R-PMO.

– There is no provision of scheduling of reports for user-defined time; it gives the results only as and when R-PMO starts.

– The R-PMO Configured, BSC processor load, on an average can be increased by 5-7%.

– The load on the OSS server is going to be higher side.– The number of users on the application server in the OSS

should be restricted, as the application server loading will increase by apprx.10%.


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Conclusion and reference

R-PMO is very useful tool to analyze nearly online performance of the network. This is also very useful to see affects of any changes made in the network in very short time.

The following document for your reference and help you analyze the network performance.

R-PMO User description R12

R-PMO monitor description


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Typical case

Here is a typical case which using R-PMO to analyze the network performance.


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Typical case

From the R-PMO data, we can see N_14012 have 70% drops which cause by Low SS. Then we can check the monitor description and find out which Low SS drop it belongs to.

For other 30% Bad Quality drop, we also can analyze which kind of BQ it belongs to according to the drop cause value.


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Monitor name Parameters Value TCH Drop (%) - TCH Drops (#) -

Drop Cause (R11)

100-Low SS BL TCH FR 101-Low SS BL TCH HR 102-Low SS BL, Overlaid Subcell TCH FR 103-Low SS BL, Overlaid Subcell TCH HR 104-Low SS DL TCH FR 105-Low SS DL TCH HR 106-Low SS DL, Overlaid Subcell TCH FR 107-Low SS DL, Overlaid Subcell TCH HR 108-Low SS UL TCH FR 109-Low SS UL TCH HR 110-Low SS UL, Overlaid Subcell TCH FR 111-Low SS UL, Overlaid Subcell TCH HR

Low SS (%)

Urgency Condition (R12)

3-Low SS Both Link 4-Low SS Down Link 5-Low SS Up Link

Drop Cause (R11)

114-Bad Q BL TCH FR 115-Bad Q BL TCH HR 116-Bad Q BL, Overlaid Subcell TCH FR 117-Bad Q BL, Overlaid Subcell TCH HR 118-Bad Q DL TCH FR 119-Bad Q DL TCH HR 120-Bad Q DL, Overlaid Subcell TCH FR 121-Bad Q DL, Overlaid Subcell TCH HR 122-Bad Q UL TCH FR 123-Bad Q UL TCH HR 124-Bad Q UL, Overlaid Subcell TCH FR 125-Bad Q UL, Overlaid Subcell TCH HR

Bad Q (%)


6-Bad RxQual Both Link 7-Bad RxQual Down Link 8-Bad RxQual Up Link

Drop Cause (R11)

87-Excessive TA TCH FR 88-Excessive TA TCH HR

Excessive TA (%)


1-Excessive TA


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Date post:	05-Dec-2015
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RPMO Introduction

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