Multiple CBR for Same PDN Call Flow

This section describes the Multiple CBR for Same PDN call flow.

Multiple CBR for Same PDN Call Flow
Multiple CBR for Same PDN Call Flow Description

Step

Description

1

Initial Attach completed. One PDN has established PDN1 (ebi 5).

The PGW sends the Create Bearer Request 1 for PDN1 to the S5-GTP-EP.

2

The S5-GTP-EP forwards the Create Bearer Request 1 for PDN1 to the cnSGW.

3

The cnSGW sends the Sx Modify Request 1 for PDN1 to the PFCP-EP.

4

The cnSGW receives the Sx Modify Response 1 for PDN1 from the PFCP-EP.

5

The cnSGW sends the Create Bearer Request 1 for PDN1 to the S11-GTP-EP.

6

The S11-GTP-EP sends the Create Bearer Request 1 for PDN1 to the MME.

7

The PGW sends the Create Bearer Request 2 to the S5-GTP-EP.

8

The S5-GTP-EP sends the Create Bearer Request 2 to the cnSGW.

9

The cnSGW sends the Sx Modify Request 1 (Create Bearer Request 2) for PDN1 to the PFCP-EP.

10

The PGW sends the Create Bearer Request 3 for PDN1 to the S5-GTP-EP.

11

The S5-GTP-EP sends the Create Bearer Request 3 for PDN1 to the cnSGW

12

The PFCP-EP sends the Sx Modify Response 1 (CBR2) for PDN1 to the cnSGW.

13

The cnSGW sends the Create Bearer Request 2 for PDN1 to the S11-GTP-EP.

14

The S11-GTP-EP sends the Create Bearer Request 2 for PDN1 to the MME.

15

The cnSGW sends the Sx Modify Request 1(CBR3) for PDN1 to the PFPC-EP.

16

The MME sends the Create Bearer Response 1 (ebi6) for PDN1 to the S11-GTP-EP.

17

The S11-GTP-EP sends the Create Bearer Response 1 (ebi6) for PDN1 to the cnSGW.

18

The cnSGW receives the Sx Modify Response 1 (CBR3) for PDN1 to the PFPC-EP.

19, 20

The cnSGW sends the Create Bearer Request 3 to the S11-GTP-EP.

20

The S11-GTP-EP sends the Create Bearer Request 3 to the MME.

21

The cnSGW sends the Sx Modify Request 2(CBR1) for PDN1 to the PFPC-EP.

22

The cnSGW receives the Sx Modify Response 2 (CBR1) for PDN1 to the PFPC-EP.

23

The cnSGW sends the Create Bearer Response 1 (ebi 6) for PDN1 to the S5-GTP-EP.

24

The S5-GTP-EP sends the Create Bearer Response 1 (ebi 6) for PDN1 to the PGW.

25

The MME sends the Create Bearer Response 2 (ebi 7) for PDN1 sent from MME to cnSGW.

26

The S11-GTP-EP sends the Create Bearer Response 2 (ebi 7) for PDN1 sent from MME to the cnSGW.

27

The cnSGW sends the Sx Modify Request 2 (CBR2) for PDN1 to PFCP-EP.

28

The PFCP-EP sends the Sx Modify Response 2 (CBR2) for PDN1 to the cnSGW.

29

The cnSGW sends the Create Bearer Response 2 (ebi 7) for PDN1 to the S5-GTP-EP.

30

The S5-GTP-EP sends the Create Bearer Response 2 (ebi 7) for PDN1 to the PGW.

31

The MME sends the Create Bearer Response 3 (ebi 8) for PDN1 to the S11-GTP-EP.

32

The S11-GTP-EP sends the Create Bearer Response 3 (ebi 8) for PDN1 to the cnSGW.

33

The cnSGW sends the Sx Modify Request 2 (CBR3) for PDN1 to the PFPC-EP.

34

The PFCP-EP send the Sx Modify Response 2 (CBR3) for PDN1 to the cnSGW.

35

The cnSGW sends the Create Bearer Response 3 (ebi 8) for PDN1 to the S5-GTP-EP.

36

The S5-GTP-EP sends the Create Bearer Response 3 (ebi 8) for PDN1 to the PGW.