3G RAB Fail Estab CS and PS due to LAC Border Cell - Huawei

[alcatraz]

Dear Colleagues,


Currently we are having 25 times more congestion of RAB Fail Estab CS and PS in cells that are in a LAC border.
Anyone know why this happens. ?

These are sites that have good signal levels. Urban sites.

Here is an example:




CELL

HSDPA UE MEAN CELL

RAB FAIL ESTAB CS

RAB FAIL ESTAB PS

LAC Border



CELLX

20

160

425

YES



CELLY

20

4

15

NO




Both Cells have the same radio condition. The only diference is that CELLX is in the LAC Border.

Anyone have idea why?

Thanks for your Help.

Regards.

P.D. If anyone can share with me a document that supports or can explains this issue I will be very greatful.

[alcatraz]

DEar Collegues,

Attached you will find a complete Analysis where is explained why does this problem happens.

Regards.

P.D. Reputation Always Welcome. :)