8.3.1 Initial Attach with DSMIPv6 on S2c to untrusted Fixed Broadband Access

23.1393GPP3GPP system - fixed broadband access network interworkingRelease 17Stage 2TS

This clause is related to the case when the UE attaches to a Fixed Broadband Access which is considered untrusted and S2c procedures are used when the UE establishes the first PDN connection over the Fixed Broadband Access with S2b, or when the UE has only the offloaded traffic via Fixed Broadband Access.

This procedure establishes a session between the BPCF and the PCRF to provision policy decisions for NS-WLAN offloaded traffic or to provision policy decisions for EPC routed traffic.

Figure 8.3.1-1: Initial attachment when S2c is used for roaming, non-roaming and LBO

NOTE: In the roaming case step 7 terminates at the V-PCRF.

If dynamic policy provisioning over S9a is not deployed, the optional steps 3, 4, 5, 7 and 8 do not occur.

1. The description of this step is the same as step 1 in clause 7.2.

2. The description of this step is the same as step 2 in clause 7.2.

The steps in 3, 4 and 5 describe PCC Signalling for NS-WLAN offloaded traffic, the trigger is described in clause 7.2.

3. The description of this step is the same as step 3 in clause 7.2.

4. This description of this step is the same as step 4 in clause 7.2.

5. This description of this step is the same as step 5 in clause 7.2.

Steps 6, 7 and 8 describe PCC signalling to provision policies for EPC routed traffic.

6. The description of the PDN connection setup procedure is the same as for steps 2-10 in TS 23 402 [3], clause 7.3

7. The description of this step is the same as step 7 in clause 7.2.

8. This description of this step is the same as step 8 in clause 7.2.

9. This description of this step is the same as step 9 in clause 7.2.