Basic and Advance Validation on SGW-Ingress (S11) Call Flow

The following section describes the Basic and Advance Validation on SGW-Ingress (S11) call flow.

Basic and Advance Validation - S11 Call Flow
Basic and Advance Validation - S11 Call Flow Description

Step

Description

1

The MME sends the Create Session Request to the S11-GTP-EP pod.

The S11-GTP-EP pod decodes the Create Session Request and performs basic validation.

2

If decoding or basic validation fails, or if SGW-SVC is not available, the S11-GTP-EP pod sends Create Session Response failure message to the MME.

3

If Create Session Request basic validation is successful, the S11-GTP-EP pod forwards the Create Session Request to the SGW-SVC pod.

SGW-SVC processes the Create Session Request and performs the following:

  • Mandatory IE check

  • Value check

  • Call State check

4, 5

If validation from Step 3 fails:

  • The SGW-SVC sends the Create Session Response failure message to the S11-GTP-EP pod.

  • The S11-GTP-EP pod forwards the Create Session Response failure message to the MME.

6, 7

If validation from Step 3 is successful, the SGW-SVC performs the following:

  • Processes Create Session Request

  • Performs UP and MME signaling

  • Sends Create Session Response success message to the S11-GTP-EP pod

The S11-GTP-EP pod forwards the Create Session Response success message to the MME.