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25th February 2011 at 09:32 #65877SergGuest
We on a network have a following problem: on Gb
Transaction Type: RADIO-STATUS (BSSGP Transaction) c Radio cause value:Radio contact lost with the MS.
Whether who faced the given problem, if yes as have solved a problem. Who can will prompt where to search, on what interface?28th February 2011 at 10:31 #65878pixGuest
the MS goes out of coverage and is lost: this condition is signalled by setting the Radio Cause
value to “Radio contact lost with MS”
Basically, you should check the radio interface. Check QoS indicators in NPO, check drive-tests… good rxlev, good rxqual, good neighbours, …
pix5th March 2011 at 12:09 #65879SergGuest
In the relation good rxlev, good rxqual, good neighbors of questions doesn’t arise, since the given reason is present at different honeycombs, during different time frames (loading of the data immediately was thus checked being at most BTS). In a cell exposed gprsMaxNumberPDCHRes = 7 or 14, but RADIO-STATUS (BSSGP Transaction) c Radio cause value:Radio contact lost with the MS is present. Loading Abis – 70 % in a maximum.
PPXU are loaded Prime Time =48 %, Total Time =58 %
Whether Можел to be the reason in adjustments BSC or probably there are no other resources.
p.s. During time contact lost MS, at once produced an outgoing call, MS answers.8th March 2011 at 16:30 #65880PixGuest
It is difficult to understand your text. Are you doing an automatic translation ?
Back to GPRS : the problem comes from radio quality. The quality can be bad for GPRS connection and be good for Voice connection, there is no paradox here.
Check your RC retransmission rate, check your MCS usage, check your TBF Drop rate, their causes.
Check the TCH Establishment failure causes.
pix8th March 2011 at 20:01 #65881pixGuest
RC retransmission ==> RLC retransmission