Immediate Assignment failure

[RF engineer]

Thanks but in this way, can subcounters count the total number of Phantom RACH

Yes some vendor have this raw data and they took in to KPI formulation for immediate assignment but for me in huawei this KPI is not exist , make downtilt or change radio parameter as mentioned before the problem will be solved
BR
RF

[justdream]

Experts,

can you give me the formula required to calculate the total number of phantom RACCH UL

My vendor is Siemens, kindly help

[emahmoud]

Hi all ,


What is the reason of Immediate Assignment failure in idle mode?

Dear,

i think the problem related to 2 main causes:

1. interference: try out of band on BCCH TRX.
2. TMU HW Failure: Replace it.

[viswajeet]

1. no agch available , full
2. agch message time out

transmission ok ? radio quality good ? if using sattelite need longer timer.

[radio_network]

what are all the other statistics to be affected due to phantom rach.

[parsarka]

Yes some vendor have this raw data and they took in to KPI formulation for immediate assignment but for me in huawei this KPI is not exist , make downtilt or change radio parameter as mentioned before the problem will be solved
BR
RF

Hi,
Thanks for the vaulable suggestion.Please do the needfull to mention the entire parametrs & their optimal valuse to be used for Huawei system so that my network can be benifited.

Regards
Raj

[RF engineer]

Hi,
Thanks for the vaulable suggestion.Please do the needfull to mention the entire parametrs & their optimal valuse to be used for Huawei system so that my network can be benifited.

Regards
Raj

Rx level access min -102, RACH min access level -105 what BSC you are using it .
BR
RF

[viswajeet]

Experts,

can you give me the formula required to calculate the total number of phantom RACCH UL

My vendor is Siemens, kindly help

hi justdream,
UL Phantom RACH ? hmm.. houw bout maxretrans ?

[jox101]

Hi!

Anyone here knows the difference between rach access min level and rx access min level?

[bruno hautenfaust]

The counter for Number of Immediate Assignment Attempts is ImmAssAtt = ATIMASCA[1 ..14] also you can find
MBUSYSSP[6] :Receipt of a invalid ESTABLISHMENT INDICATION message (undefined Layer3
message) related for a SDCCH (BTS → BSC) or no receipt of an ESTABLISHMENT
INDICATION message after activation of a SDCCH (phantom RACH).

BR