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Junior Member
Reputation: 11
PRACH Propagation Delay
Could anyone tell me how can I extract the information regarding PRACH propagation delay from Huawei RNC?
I used to analyse this KPI to look for overshooting cells in Nokia-Siemens RNC, but I don't know how to extract the same information from Huawei RNC.
Thanks in advance!
Rodrigo Barreto
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2011-05-26 06:48 AM
# ADS
Circuit advertisement
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VIP Member
Reputation: 1118
Re: PRACH Propagation Delay
using NASTAR (Statistic tools from Huawei)
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Junior Member
Reputation: 11
Re: PRACH Propagation Delay
Unfortunately we don't have access to Nastar Tool.
Do you know another way to get this KPI from Huawei RNC?
Thanks!
Rodrigo Barreto
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VIP Member
Reputation: 1118
Re: PRACH Propagation Delay
Nope, from M2000 i didn't got this. Only with NASTAR
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Senior Member
Reputation: 402
Re: PRACH Propagation Delay
hi man
the only way to get if not having the CHR analyzer is by doing the IOS tracing for the cell. you will get the propagation delay after the PRACH is sent. you will need to filter out this information and do some magic calculations to estimate you PD.
later on I will post a detailed way to do it :-)
Future Belongs to those possessing beautiful DREAMS
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PWD:f1net0p1x
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VIP Member
Reputation: 1118
Re: PRACH Propagation Delay
already done yet or not my frend?
If this document usefull, then giving some
reputations is highly appreciated.
note : see default password
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Junior Member
Reputation: 11
Re: PRACH Propagation Delay
Sorry, but I have no idea of how it could be done. Could you explain it for me?
Thank you very much!
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VIP Member
Reputation: 1118
Re: PRACH Propagation Delay
Originally Posted by
qaqa
hi man
the only way to get if not having the CHR analyzer is by doing the IOS tracing for the cell. you will get the propagation delay after the PRACH is sent. you will need to filter out this information and do some magic calculations to estimate you PD.
later on I will post a detailed way to do it :-)
@qaqa, do you have some update about this request?
If this document usefull, then giving some
reputations is highly appreciated.
note : see default password
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Senior Member
Reputation: 402
Future Belongs to those possessing beautiful DREAMS
----------------------------------------------------
PWD:f1net0p1x
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Post Thanks - 2 Thanks
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Senior Member
Reputation: 321
Re: PRACH Propagation Delay
Hi gaga,
thanks for shared. I wanna ask some questions.Please Could u explain "measurement resolution" and " chip distance"? And How I get them,Where?
Originally Posted by
qaqa
Hi guys
as promissed, attached is a snapshot of an IOS tracing for RAN12. If you look at it you will see a proper message called:" Propagation delay". going to message details window you see ucRachPropagDelay message.to compute your mobile_Distance use this formula:
Mobile_Distance (m)=(ucRachPropagDelay+1.5)*3*78
ucRachPropagDelay= you extract from the message.
3= is the measurement resolution (3 chips)
1.5= is a correction parameter for HW system. in 3GPP (25.435) the formula doesn't include this value.
78 (m)= is the Chip distance.
in this case, the mobile is about (4+1.5)*3*78=1287m
Cheers,
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