Rf Fan,
Well, in this case… What do you think about this : the MS sends the request in order to keep the connection “alive” longer, but it doesn’t actually expect an answer. This is a trick used to speed up the GPRS reactivity…
Of course if it happens only in this cell, it is a bit weird. I think i would start by check the UL TBF establishment failure in the QoS Stats, that would certainly give a lead. Other than that, I don’t really see what could be the problem…
If there’s nothing on the QoS stats, then it is certainly not impacting the users… and if there is a problem, then you can certainly check the causes of the failures with some more detailed stats. Check also the GSM stats, if there is a radio problem in the cell.
Let me know if you find anything..