RSSI level issue

[freedman71]

Dear Experts,I'm facing a problem of RSSI level in 3G cells,so what is the default value of RSSI and how to fix this issueThanks

[uchok]

hi, hope this helps.

[freedman71]

hi, hope this helps.
Thanks bro for your help,but i have low RSSI in 3rd sector 2nd cell in RBS 6000
====================================================================================================================
Cell RX1(dBm) RX2(dBm) Delta TrDevices
====================================================================================================================
S1C1 -103.2 -102.1 1.1 *1-1/RRUW-1/1 *1-1/RRUW-1/2
S1C2 -104.8 -102.7 2.1 *1-1/RRUW-1/3 *1-1/RRUW-1/4
S2C1 -100.5 -104.7 4.2 *2-1/RRUW-1/1 *2-1/RRUW-1/2
S2C2 -101.5 -104.7 3.2 *2-1/RRUW-1/3 *2-1/RRUW-1/4
S3C1 -103.2 -93.7 9.5 *3-1/RRUW-1/1 *3-1/RRUW-1/2
S3C2 -103.9 -93.4 10.5 *3-1/RRUW-1/3 *3-1/RRUW-1/4
--------------------------------------------------------------------------------------------------------------------
i changend the value of electrical tilt,no result the same value

[uchok]

how about the traffic of sector 3? Is it higher from other sector?

[freedman71]

how about the traffic of sector 3? Is it higher from other sector?
yes,is higher in 1st cell of 3rd sector than sector 1 and sector 2
=================================================================================================================
MO Attribute Value
=================================================================================================================
Sector=1,Carrier=2,RadioLinks=1 noOfRadioLinks 3
Sector=1,Carrier=1,RadioLinks=1 noOfRadioLinks 4
Sector=3,Carrier=2,RadioLinks=1 noOfRadioLinks 5
Sector=3,Carrier=1,RadioLinks=1 noOfRadioLinks 15
Sector=2,Carrier=1,RadioLinks=1 noOfRadioLinks 5
Sector=2,Carrier=2,RadioLinks=1 noOfRadioLinks 2
=================================================================================================================

[freedman71]

Dear experts,any help?

[s52d]

Hi!

Check settings of cable loss.
It is probably 0 (RRU), but you might keep some old value if RBS3000 was replaced by RBS6000/RRU.
In E///, they take cable loss into consideration, and all numbers are recalculated to antenna connector.
Thus, with wrong numbers you can get different results.

We also had cases where wrong numbers are due to equipment malfunction or bad connectors. But mostly it is incosistent parameters.

S3C1 -103.2 -93.7 9.5 *3-1/RRUW-1/1 *3-1/RRUW-1/2
S3C2 -103.9 -93.4 10.5 *3-1/RRUW-1/3 *3-1/RRUW-1/4

Check also standard deviation: it might reflect high EUL load on this or neighbor cell.



BR
s52d

[freedman71]

Hi!

Check settings of cable loss.
It is probably 0 (RRU), but you might keep some old value if RBS3000 was replaced by RBS6000/RRU.
In E///, they take cable loss into consideration, and all numbers are recalculated to antenna connector.
Thus, with wrong numbers you can get different results.

We also had cases where wrong numbers are due to equipment malfunction or bad connectors. But mostly it is incosistent parameters.

S3C1 -103.2 -93.7 9.5 *3-1/RRUW-1/1 *3-1/RRUW-1/2
S3C2 -103.9 -93.4 10.5 *3-1/RRUW-1/3 *3-1/RRUW-1/4

Check also standard deviation: it might reflect high EUL load on this or neighbor cell.



BR
s52d

Dear,i want to know if the RSSI is an alarm and we can fix it.because i have this case and the traffic is ok and no alarms in the nodeb

[kisoery]

Thanks bro for your help,but i have low RSSI in 3rd sector 2nd cell in RBS 6000
====================================================================================================================
Cell RX1(dBm) RX2(dBm) Delta TrDevices
====================================================================================================================
S1C1 -103.2 -102.1 1.1 *1-1/RRUW-1/1 *1-1/RRUW-1/2
S1C2 -104.8 -102.7 2.1 *1-1/RRUW-1/3 *1-1/RRUW-1/4
S2C1 -100.5 -104.7 4.2 *2-1/RRUW-1/1 *2-1/RRUW-1/2
S2C2 -101.5 -104.7 3.2 *2-1/RRUW-1/3 *2-1/RRUW-1/4
S3C1 -103.2 -93.7 9.5 *3-1/RRUW-1/1 *3-1/RRUW-1/2
S3C2 -103.9 -93.4 10.5 *3-1/RRUW-1/3 *3-1/RRUW-1/4
--------------------------------------------------------------------------------------------------------------------
i changend the value of electrical tilt,no result the same value


Same Problem!!! :-x

[DJ Download]

If only occurred in 1 sector this could be external interference or loos connector. Did you already check the network counters? if yes did this happen on a certain period only or this happened all day long?

[Mali_TR]

Could you share vswr ?

[Ralphobafemi]

Hi,
Default RSSI template:
unloaded cells -106dBm
Loaded at 75% UL Cell load = +3dB = -103/-102dBm
Loaded at 85% UL cell load = +6dB = -99dBm

Un acceptable levels of RSSI starts from -99dBm and greater (-98, -97, -96....).

Hope this helps
RalphObafemi
++ReputationPlease

[mahdi]

Hi,
Default RSSI template:
unloaded cells -106dBm
Loaded at 75% UL Cell load = +3dB = -103/-102dBm
Loaded at 85% UL cell load = +6dB = -99dBm

Un acceptable levels of RSSI starts from -99dBm and greater (-98, -97, -96....).

Hope this helps
RalphObafemi
++ReputationPlease


Do you know what is Default RSSI value in LTE?

[ulhwbest]

Hello,

Would you able to see the hourly trend of the it's traffic (Speech or Packet) profile? You may correlate this with the UL RSSI on the statistics.
If the UL RSSI increased with respect to traffic then increase in UL RSSI is due to Traffic driven. However, if during off-peak hour UL RSSI is still high then we could have
some issue on external interference.

Kindly verify also the VSWR on the Node B side or any alarm related to antenna.

Hope this helps.