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Member
Reputation: 119
eNB replies to MSG2 but no MSG3 received
Hi lads
I have some cases where eNB (LTE) is replying to MSG1 (RACH) (MSG1->MSG2 successful) but no record for MSG3 (no RRC request recieved at all) !
can anyone explain ?
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2016-06-29 11:14 PM
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VIP Member
Reputation: 1849
Re: eNB replies to MSG2 but no MSG3 received
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Member
Reputation: 119
Re: eNB replies to MSG2 but no MSG3 received
what is the reason behind ghost preambles ?
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Senior Member
Reputation: 419
Re: eNB replies to MSG2 but no MSG3 received
Originally Posted by
eritelecom
Hi lads
I have some cases where eNB (LTE) is replying to MSG1 (RACH) (MSG1->MSG2 successful) but no record for MSG3 (no RRC request recieved at all) !
can anyone explain ?
>>>
Is that a contention-based RACH procedure or not ? If it is a contention free RACH procedure, it may look good.
In case it is a contention-based, may be UE lose signal or reselect to other RAT. Or the UE move far away from eNB and the MSG3 is too weak for eNB to detect.
There are many reason. You may check further. For example, only happen in one phone ...
Thanks & regards
Dennielone
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Re: eNB replies to MSG2 but no MSG3 received
please to check the RSI plan in the problematic cell and try also to downtilt if any overshooting.
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Member
Reputation: 119
Re: eNB replies to MSG2 but no MSG3 received
the pb here is that eNB receives thousands of MSG1 and replies to them but zero MSG3 !! so if there is any pb in rout sequence planning it should have some replies at least no zero
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Member
Reputation: 119
Re: eNB replies to MSG2 but no MSG3 received
any feedback please lads ?
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Member
Reputation: 172
Re: eNB replies to MSG2 but no MSG3 received
what is the cell radius defined for that cell ? does it correlate to the expected serving distance ..>
br
alex
Originally Posted by
eritelecom
any feedback please lads ?
Last edited by agenov; 2016-11-19 at 02:44 AM
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Junior Member
Reputation: 11
Re: eNB replies to MSG2 but no MSG3 received
what is your current set value for Nominal power for EU PUSCH TX
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