Member
Reputation: 45
RSSI level issue
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
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2014-04-23 07:05 PM
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2 out of 2 members found this post helpful.
Re: RSSI level issue
Attached Files
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Member
Reputation: 45
Re: RSSI level issue
Originally Posted by
uchok
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
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1 out of 1 members found this post helpful.
Re: RSSI level issue
how about the traffic of sector 3? Is it higher from other sector?
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Member
Reputation: 45
1 out of 1 members found this post helpful.
Re: RSSI level issue
Originally Posted by
uchok
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
=================================================================================================================
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Member
Reputation: 45
Re: RSSI level issue
Re: RSSI level issue
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
Last edited by s52d; 2014-04-28 at 03:21 PM
Reason: few more lines
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val5 thanked for this post
Member
Reputation: 45
Re: RSSI level issue
Originally Posted by
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
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
Junior Member
Reputation: 10
Re: RSSI level issue
Originally Posted by
freedman71
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
Re: RSSI level issue
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?
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