403 Baseband FH Mutual Aid in a Cell

Description

This alarm is reported when the baseband frequency hopping (FH) function of a cell is disabled because the TRX that participates in baseband FH is faulty.

Attribute

Alarm ID Alarm Severity Alarm Type
403 Major Event

Parameters

ID Name Meaning
1 Cell Index.

Index of the cell where baseband FH mutual aid occurs

2 Cell Name

Name of the cell where baseband FH mutual aid occurs

3 Cell CGI

Cell Global Identifier of the cell where baseband FH mutual aid occurs

4 Site No.

Number of the site where the cell generating an alarm is located

5 Site Name

Name of the site where the cell generating an alarm is located

6 Alarm Attribute

0=Normal, Alarms period are longer than the Transient Threshold.

1=Transient Count, The times and the period of the alarms whose periods are shorter than the Transient Threshold are summed up. If the sum result is longer than the Alarm Occurrence Period Threshold or Alarm Occurrence Times Threshold, an alarm so called Transient Count Alarm is triggered. Because Transient Count Alarm is based on accumulative result, the recovery of the alarm may occur at least one Summing Cycle later. The Summing Cycle can be query by MML "LST STATSLDWIN".

Impact on the System

The services provided by the cell are disrupted temporarily. After the mutual aid, FH is not allowed in the cell and the services are restored.

System Actions

After the alarm is reported, FH is not allowed in the cell and the cell is initialized.

Possible Causes

  • The baseband FH function of the cell is disabled because the TRX that participates in baseband FH is faulty.
  • The TRX carrying the primary BCCH is faulty. The BCCH mutual aid occurs.
  • The TRX that participates in baseband FH is blocked manually.

Procedure

  1. In the alarm system of BSC6000 LMT, check whether the alarm 401 BCCH Mutual Aid in a Cell in a Cell is reported a few seconds before this alarm is reported.

    Y => The baseband FH mutual aid is caused by the BCCH TRX mutual aid, that is, the BCCH is aided to the TRX that participates in baseband FH. Refer to the handling suggestions of 401 BCCH Mutual Aid in a Cell. The alarm handling is complete.

    N => The TRX that participates in baseband FH is faulty. Go to 2.

  2. Check whether all the TRXs listed in Parameters after the mutual aid are normal.

    Y => Go to 3.

    N => Please contact Huawei Customer Service Center to Replace the faulty TRX.

  3. Check whether the mutual aid is caused by the manual blocking of the TRXs participating in baseband FH.

    Y => The alarm handling is complete.

    N => Please contact Huawei Customer Service Center .


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