Huawei Technologies Co. Ltd BTS3812A-1900 Manuel D’Utilisation
NodeB LMT User Guide
Chapter 9 Monitoring NodeB Performance and State in
Real Time
Huawei Technologies Proprietary
9-9
The reporting periods of phase discrimination value and DA value are different. The
reporting period of phase discrimination value is 1 second. The reporting period of DA
value depends on the type of the clock source.
reporting period of phase discrimination value is 1 second. The reporting period of DA
value depends on the type of the clock source.
z
For the GPS or BITS clock source, the reporting period of DA value is 2 minutes in
normal condition. If there is fluctuation or frequency deviation on the clock, the
period may be longer than 2 minutes. It is normal if the first reporting period is
greater than 2 minutes.
normal condition. If there is fluctuation or frequency deviation on the clock, the
period may be longer than 2 minutes. It is normal if the first reporting period is
greater than 2 minutes.
z
For the Iub clock source, the reporting period of DA value is 30 minutes in normal
situation. If there is fluctuation or frequency deviation on the clock, the period may
be longer than 30 minutes. It is normal if the first reporting period is greater than 30
minutes.
situation. If there is fluctuation or frequency deviation on the clock, the period may
be longer than 30 minutes. It is normal if the first reporting period is greater than 30
minutes.
2) Phase discrimination value
If the difference of the reported phase discrimination value and the actual value
(10 MHz) is greater than ±1 Hz, you need to check whether there is problem in the
clock source.
(10 MHz) is greater than ±1 Hz, you need to check whether there is problem in the
clock source.
9.7 Scanning NodeB Rx Frequency
I. Introduction
The Rx frequency scanning helps you examine electromagnetic environment and
internal interference of the NodeB.
internal interference of the NodeB.
The process is as follows: The MTRU/MRRU scans the frequency, calculates the
strength of received signals, and then reports the result.
strength of received signals, and then reports the result.
II. Prerequisites
z
It is recommended to do Rx frequency scanning before cell configuration.
z
The MTRU/MRRU must be blocked before Rx frequency scanning starts.
III. Procedure
Follow the steps below to scan the NodeB Rx frequency:
1) Choose
Maintenance Navigator -> Realtime State Monitoring. Right-click on
the Rx Frequency Scanning subnode.
2) Click
Create Monitor Task. The system displays the Rx Frequency Scanning
dialog box, as shown in Figure 9-5.