LTE L3 trace failure due to initial context setup failure

4G LTE
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1

Dear experts,

LTE L3 trace failure is due to initial context setup failure :point_down:

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What could be the reason?

2

Probably RLF on radio, bad RSRP or quality.
If not, then fail in Security Mode Failure.

3

Yes thanks for confirming :slightly_smiling_face:

4

Any specific reason for radio security failure?

Failure may be due to UE trying for cell reselection…

5

Integrity check failure.

6

@mohit_lohani
After RRC setup complete, enodeb send “intiial ue context setup message” to MME for Erab setup (pdn connectivity).
As per your question, "Iniial context setup failure " reason could be multiple reasons , check row counter of e-rab setup ,
your provided error could be (1) weak ue coverage (2) security mode failure due to ue compatiblity