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Content for  TS 23.214  Word version:  18.0.0

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6.3.4 Updates to procedures specified in TS 23.060 [5]  6.3.4.1 Procedures with PDN connection deactivation  6.3.4.1.1 Procedures with SGSN terminating S4 interface  6.3.4.1.2 Procedures with SGSN terminating Gn/Gp interface 
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6.3.4  Updates to procedures specified in TS 23.060 [5]  p. 62

6.3.4.1  Procedures with PDN connection deactivation  p. 62

6.3.4.1.1  Procedures with SGSN terminating S4 interface  p. 62
This clause defines interactions between the CP and UP function during the following procedures related to the deactivation of a PDN connection:
Group 1:
  • Combined GPRS / IMSI Attach procedure:
    • Including steps specific for S4 SGSN: Combined GPRS / IMSI Attach procedure, Delete Bearer by the new SGSN, using S4, and Combined GPRS / IMSI Attach procedure, Delete Bearer by the old SGSN, using S4.
  • MS-Initiated Combined GPRS / IMSI Detach Procedure.
  • SGSN-Initiated GPRS Detach Procedure.
  • HLR-Initiated GPRS Detach Procedure:
    • Including steps specific for S4 SGSN: SGSN interaction during Detach Procedure when using S4.
  • MS Initiated Bearer Deactivation Procedure for A/Gb mode (with Teardown Ind).
  • MS Initiated Bearer Deactivation Procedure for Iu mode (with Teardown Ind).
  • SGSN-initiated Bearer Deactivation Procedure (with Teardown Ind):
    • Including steps specific for S4 SGSN: MS-and SGSN Initiated PDN connection Deactivation Procedure using S4.
Group 2:
  • GGSN-initiated PDP Context Deactivation Procedure (with Teardown Ind):
    • Including steps specific for S4 SGSN: PDN GW-initiated Bearer Deactivation Procedure using S4, part 1 and part 2.
During the above procedures, following is the nature of interactions between the CP and UP function:
  • The SGW-C releases the existing Sx session from SGW-U.
  • The PGW-C releases the existing Sx session from PGW-U.
  • The SGW-C modifies the existing Sx session for SGW-U.
  • The PGW-C modifies the existing Sx session for PGW-U.
Copy of original 3GPP image for 3GPP TS 23.214, Fig. 6.3.4.1.1-1: Interaction between CP and UP function with PDN connection deactivation Group 1
Figure 6.3.4.1.1-1: Interaction between CP and UP function with PDN connection deactivation Group 1
(⇒ copy of original 3GPP image)
Up
Step 1.
Procedure as listed in this step is initiated as specified in the relevant clauses of this specification. The relevant steps of the procedure as specified in the Figure above are executed.
Step 2a.
The SGW-C sends an Sx Session Modification Request to the SGW-U to modify the Sx session. SGW-C shall request SGW-U to stop counting uplink packets for the affected bearers. SGW-C shall also request the SGW-U to discard uplink packets received from eNodeB for the affected bearers.
Step 2b.
The SGW-U sends an Sx Session Modification Response to the SGW-C confirming the modification of the Sx session.
Step 2c.
The relevant steps of the procedure as specified in the Figure above are executed.
Step 3a.
The PGW-C may send an Sx Session Termination Request to the PGW-U to release the Sx session.
Step 3b.
The PGW-U sends an Sx Session Termination Response to the PGW-C confirming the release of the Sx session.
Step 3c.
The relevant steps of the procedure as specified in the Figure above are executed.
Step 3d.
The SGW-C may send an Sx Session Termination Request to the SGW-U to release the Sx session.
Step 3e.
The SGW-U sends an Sx Session Termination Response to the SGW-C confirming the release of the Sx session.
Step 4.
The relevant steps of the procedure as specified in the Figure above are executed.
Step 5a.
The SGW-C may send an Sx Session Modification Request to the SGW-U in detach and Bearer Deactivation procedures. SGW-C shall indicate SGW-U to stop counting uplink packets for the affected bearers. SGW-C shall also indicate the SGW-U to discard uplink packets received from eNodeB for the affected bearers.
Step 5b.
The SGW-U sends an Sx Session Modification Response to the SGW-C.
Step 6.
The relevant steps of the procedure as specified in the Figure above are executed.
Step 7a.
The PGW-C may send an Sx Session Termination Request to the PGW-U to release the Sx session.
Step 7b.
The PGW-U sends an Sx Session Termination Response to the PGW-C confirming the release of the Sx session.
Step 8.
The relevant steps of the procedure as specified in the Figure above are executed.
Step 9a.
The SGW-C may send an Sx Session Termination Request to the SGW-U to release the Sx session.
Step 9b.
The SGW-U sends an Sx Session Termination Response to the SGW-C confirming the release of the Sx session.
Step 10.
The relevant steps of the procedure as specified in the Figure above are executed.
Copy of original 3GPP image for 3GPP TS 23.214, Fig. 6.3.4.1.1-2: Interaction between CP and UP function with PDN connection deactivation Group 2
Figure 6.3.4.1.1-2: Interaction between CP and UP function with PDN connection deactivation Group 2
(⇒ copy of original 3GPP image)
Up
Step 1.
Procedure as listed in this step is initiated as specified in the relevant clauses of this specification. The relevant steps of the procedure as specified in the Figure above are executed.
Step 2a.
The PGW-C sends an Sx Session Modification Request to the PGW-U when it initiates bearer deactivation procedure. PGW-C shall indicate PGW-U to stop counting downlink packets for the affected bearers. PGW-C shall also indicate the PGW-U to discard downlink packets received for the affected bearers.
Step 2b.
The PGW-U sends an Sx Session Modification Response to the PGW-C.
Step 3a.
Void.
Step 3b.
Void.
Step 4.
The relevant steps of the procedure as specified in the Figure above are executed.
Step 5a.
The SGW-C sends an Sx Session Termination Request to the SGW-U to release the Sx session.
Step 5b.
The SGW-U sends an Sx Session Termination Response to the SGW-C confirming the release of the Sx session.
Step 6.
The relevant steps of the procedure as specified in the Figure above are executed.
Step 7a.
The PGW-C sends an Sx Session Termination Request to the PGW-U to release the Sx session.
Step 7b.
The PGW-U sends an Sx Session Termination Response to the PGW-C confirming the release of the Sx session.
Step 8.
The relevant steps of the procedure as specified in the Figure above are executed.
Up
6.3.4.1.2  Procedures with SGSN terminating Gn/Gp interface  p. 66
This clause defines interactions between the CP and UP function during the following procedures related to the deactivation of a PDN connection:
Group 1:
  • Combined GPRS / IMSI Attach procedure.
  • MS-Initiated Combined GPRS / IMSI Detach Procedure.
  • SGSN-Initiated GPRS Detach Procedure.
  • HLR-Initiated GPRS Detach Procedure.
  • MS Initiated PDP Context Deactivation Procedure for A/Gb mode (with Teardown Ind).
  • MS Initiated PDP Context Deactivation Procedure for Iu mode (with Teardown Ind).
  • SGSN-initiated PDP Context Deactivation Procedure (with Teardown Ind).
Group 2:
  • GGSN-initiated PDP Context Deactivation Procedure (with Teardown Ind).
During the above procedures, following is the nature of interactions between the CP and UP function:
  • The PGW-C releases the existing Sx session from PGW-U.
Copy of original 3GPP image for 3GPP TS 23.214, Fig. 6.3.4.1.2-1: Interaction between CP and UP function with PDN connection deactivation Group 1
Figure 6.3.4.1.2-1: Interaction between CP and UP function with PDN connection deactivation Group 1
(⇒ copy of original 3GPP image)
Up
Step 1.
Procedure as listed in this step is initiated as specified in the relevant clauses of this specification. The relevant steps of the procedure as specified in the Figure above are executed.
Step 2a.
The PGW-C may send an Sx Session Termination Request to the PGW-U to release the Sx session.
Step 2b.
The PGW-U sends an Sx Session Termination Response to the PGW-C confirming the release of the Sx session.
Step 3.
The relevant steps of the procedure as specified in the Figure above are executed.
Step 4a.
The PGW-C may send an Sx Session Termination Request to the PGW-U to release the Sx session.
Step 4b.
The PGW-U sends an Sx Session Termination Response to the PGW-C confirming the release of the Sx session.
Step 5.
The relevant steps of the procedure as specified in the Figure above are executed.
Copy of original 3GPP image for 3GPP TS 23.214, Fig. 6.3.4.1.2-2: Interaction between CP and UP function with PDN connection deactivation Group 2
Figure 6.3.4.1.2-2: Interaction between CP and UP function with PDN connection deactivation Group 2
(⇒ copy of original 3GPP image)
Up
Step 1.
Procedure as listed in this step is initiated as specified in the relevant clauses of this specification. The relevant steps of the procedure as specified in the Figure above are executed.
Step 2a.
The PGW-C sends an Sx Session Modification Request to the PGW-U when it initiates bearer deactivation procedure. PGW-C shall indicate PGW-U to stop counting downlink packets for the affected bearers. PGW-C shall also indicate the PGW-U to discard downlink packets received for the affected bearers.
Step 2b.
The PGW-U sends an Sx Session Modification Response to the PGW-C.
Step 3.
The relevant steps of the procedure as specified in the Figure above are executed.
Step 4a.
The PGW-C sends an Sx Session Termination Request to the PGW-U to release the Sx session.
Step 4b.
The PGW-U sends an Sx Session Termination Response to the PGW-C confirming the release of the Sx session.
Step 5.
The relevant steps of the procedure as specified in the Figure above are executed.
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