SD Traffic much higher than TCH Traffic

Dears,

Kindly share your experience,
I've one cell where SD Traffic is much higher than TCh Traffic (4 times)

What could this strange issue, how come customers use SD 4 times greater than TCHs?

it could be a LAC border cell, also check Location update parameters (timers core side).
hope it may help

Interesting looking forward to hear the real cause..

Analyze all events related to that cell...

It could be a boarder Cells with High Location update request,
or its overshooting Cells with high TA

Quote:

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Originally Posted by justdream

Dears,

Kindly share your experience,
I've one cell where SD Traffic is much higher than TCh Traffic (4 times)

What could this strange issue, how come customers use SD 4 times greater than TCHs?

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Hello,
Don't forget to check 3G to 2G Cell Reselection parameters, each one has a Location Update

Using CME do a compare parameter check with another healthy same band sector.Normally this happens when you mess up with parameters.

Hi,


I confirm what tharinduwije just said, i encoutered a similar case (MCC & MNC wrong configuration)


This is not a normal behavior even in border area or overshooting cases, you have for sure mess up parameters.


Please do a comparaison with a healty cell and reply back to the post.


Best regards,

Dear,

you can increase the "Cell Re-select Hysteresis " in the boarder cells.
it could support to reduce the signaling traffic Or you can tilting the overshooting sites by checking the TA counters.

Quote:

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Originally Posted by justdream

Dears,

Kindly share your experience,
I've one cell where SD Traffic is much higher than TCh Traffic (4 times)

What could this strange issue, how come customers use SD 4 times greater than TCHs?

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I have experienced this before, its due to the cell overshooting across a LAC boundary, increase CRH to say 12 or 14 to reduce this effect.

Hi bro,
Also Check Mean Holding Time for SDCCH. Sometimes some SDCCH TS stucks giving huge increase in MHT and Traffic. generally issue is resolved by giving reset to cell or shuffling SDCCH timeslots. You have to check if MHT is abnormal or SDCCH attempts are abnormally high. If SDCCH attempts are abnormally high then issue might be with Idle mode parameters i.e CRO or CRH.

Quote:

---

Originally Posted by justdream

Dears,

Kindly share your experience,
I've one cell where SD Traffic is much higher than TCh Traffic (4 times)

What could this strange issue, how come customers use SD 4 times greater than TCHs?

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I agree also with Irat 3g-2G config. we had signalling increases after changes in 3g.
regards