Sudden degradation on LTE PS CSSR pending on high RRC failure

4G LTE
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1

Dear experts,
I am experiencing sudden degradation on LTE PS CSSR pending on high RRC failure.
The vendor is Huawei.
Any optimization suggestion will be appreciated.
Thank you.

1 Like
2

These High RRC Failures are on Signalling or Service?

3

I am new on Huawei. Any counter to categorized this on U2000?
Also there was huge traffic increase at the same time.

4

Check these counters in PRS:
image

5

Thank You.

Analysis for some impacted cluster:

image
image833×141 104 KB

Any optimization suggestion?

6

Do you have transmission capacity problems?
Can you do IP Path measurement?
Or flow control / congestion?

7

Is there LTE CSSR improvement Parameter list suggestions?

8

Where’s your failing?
On RACH, on RRC or on ERAB?
What’s the main cause of failure?

9

RRC and ERAB.
Our CSSR formula contains RRC, ERAB and S1sig.

10

Right, S1 shoudl be there too.