To configure link budget calculation statistics

Overview

The link budget calculation report provides the details on radio link deviations, based on the Install/Design and Actual RSL values per MPT/UBT basis, for selected time range and granularity (15 Min/24 Hr). The report lists the number of deviations and details on the links for Actual vs Design and Actual vs Install percentage values.

Nodes with radio links need to be discovered in the NFM-P. NFM-P will calculate the path distance (user configurable between kilometers) based on the latitude and longitude coordinates on the node properties.

Note: Radio RSL is supported only for MPT/UBT radio ports and not supported for radio modem ports.

I&C Parameters Retrieval is supported on NEs that support secure file transfer.

Receive Signal Level (RSL) indicates the quality of radio transmission.

The following RSL types are supported:

Design RSL- based on the SLA, the desired RSL values is calculated using complex formulas, considering the receiver sensitivity threshold, output power of the transmitter, loss between transmitter and receiver antenna, gain of the transmitter and receiver antenna and free space loss parameters.
Installed RSL- is the RSL value after commissioning the Wavence nodes.
Actual RSL- is the current RSL value retrieved from performance monitoring.

Prerequisites

NE login credentials must be updated in the mediation policy that is used for read and write mediation security in the discovery rule.

Choose Administration→Mediation→Mediation Security. Select the mediation policy to be updated.
In the CLI panel, select Communication Protocol as Telnet/SSH.
Configure the User Name and Password parameters same as the node credentials used for logging into WebCT/NEtO.
Click Apply.

Before the RSL date can be retrieved, it must be generated using WebCT. See the WebCT documentation for information about generating the I&C parameters file from the Monitoring and Maintenance view. After configuration changes are made to the node, the file should be generated again to ensure the changes are captured.

Steps


1	Perform the following to retrieve the RSL files. To retrieve files for a CorEvo Wavence node, Release 23A or higher, see To retrieve I&C files stored by Wavence devices using the NFM-P. Choose Administration→NE Maintenance→I&C Parameters Retrieval. The I&C Parameters Retrieval window opens. Click Search. The I&C Parameters Retrieval Status window lists the Wavence nodes. Click the Retrieve Radio RSL button and click Yes on the confirmation window. The RSL File Retrieval Status column is updated with the retrieval status, which is limited to one of the following: If the CLI login credentials on the NE does not match the login credentials in CLI panel of the read and write mediation policy, an “Authentication failed” message is displayed. If there are no RSL CSV files on the NE, an "RSL Files does not exist on NE" message is displayed. File generation is performed using the WebCT interface. If there is an RSL CSV file for a radio port on the NE, the file is retrieved and the RSL status is updated.
2	With the successful retrieval of the RSL file for any MPT/UBT port, on the equipment navigation tree, right-click on the Wavence port where a Radio interface is configured, for example, an MPT-MC or MPT-HC unit, and choose Properties. The Physical Port (Edit) form opens with the value in the CSV file updated correctly into the Install RSL field in the Radio tab.
3	Click on the Radio tab. Perform the following: Update the Design RSL value in the Profile panel. Configure the appropriate PM statistics parameters in the Radio PM panel.
4	Click on the Statistics tab and choose Radio Analog Statistics (Radio Equipment) from the Select Object Type contextual menu.
5	Click on the Statistics Policies button and select MIB Entry Policy. Expand the Configuration panel and ensure that the RSL Hop Current statistics are enabled on the radio port.
6	Close the form. Note: By default RSL file is saved at /opt/nsp/nfmp/nelogs/WavenceRSLFiles/<Node ID> End of steps