Delete Session Procedure Failure Handling
This section covers the MME-initiated Deletion Session procedure failure scenarios.
The following table represents cnSGW-C behavior for the failure scenarios:
Scenarios |
SGW-service Behavior |
Signaling |
Output |
---|---|---|---|
Delete Session Request advance validation failure |
Send failure/No signaling over Sx/MME |
Negative - S11 Delete Session Response |
Session/PDN is not deleted |
Sx Session Modify Request failure |
Skip failure and continue |
Send Delete Session Request towards PGW Send Delete Session Response (Cause = Accepted) to MME Sx Delete Request (to Delete traffic endpoint) depends upon Sx Session Modify Response |
Session/PDN is deleted |
S5 Delete Session Request failure |
Skip failure and continue |
Send Delete Session Response (Cause = Accepted) to MME Sx Delete Request (to Delete traffic endpoint) |
Session/PDN is deleted |
Sx Session Delete Request failure |
Skip failure and continue |
Send Delete Session Response (Cause = Accepted) to MME |
Session/PDN is deleted |