This clause specifies the delta related to UE policy distribution defined in clause 6.1.3 of TS 23.503 for 5G-RG and FN-RG.

The session binding mechanism defined in clause 6.1.3.2.2 of TS 23.503 applies. In addition, the PDU session parameters considered for session binding are:

• For IPv6 PDU session type, one or multiple UE IPv6 address or one or multiple IPv6 prefixes /64 or shorter prefixes.
• For IPv4v6 PDU session type, one UE IPv4 address and one or multiple IPv6 prefixes /64 or shorter prefixes.

The Policy Control Request Triggers relevant for SMF and wireline access define the conditions when the SMF shall interact again with PCF after a PDU Session established via W-5GAN. PCR triggers defined in Table 6.1.3.5-1 in TS 23.503 are supported for W-5GAN scenario with the following not supporting ones:

• PLMN change.
• Location change (serving area).
• Location change (serving CN node in 5GS).
• Location change (serving CN node in EPC).
• Change of UE presence in Presence Reporting Area.
• 3GPP PS Data Off status change.
• GFBR of the QoS Flow can no longer (or can again) be guaranteed.
• UE resumed form suspend data.
• Manageable Ethernet Port detected.
• Port Management Information Container available.

Additionally, the new triggers defined in clause 9.7 for IPTV service are also applied for a 5G-RG connected via W-5GAN scenario.

This clause specifies the delta related to Network Function and entities defined in clause 6.2 of TS 23.503 for 5G-RG and FN-RG. The functional description of the NEF, NWDAF, UDR and CHF applies as described in TS 23.503.

The PCF provides session management policy control for single access PDU sessions over non 3GPP wireline and multiaccess PDU sessions over both 3GPP and non 3GPP wireline access. The session management related functionality defined in clause 6.2.1 of TS 23.503 applies for 5G-RG and FN-RG, with the following modifications for W-5GAN:

• Determination of Maximum Packet Loss Rate for UL/DL does not apply.
• QoS Notification Control does not apply.

The non-session management related functionality defined in clause 6.2.2 of TS 23.503 applies for 5G-RG and FN-RG, with the following modifications for W-5GAN:

• the UE-AMBR control by the Visited Network does not apply.
• the Service Area Restrictions for a FN-BRG does not apply.
• the 5G-RG and FN-RG replaces the UE.
• the PCF provides Access and mobility related policy control as described in clause 9.5.1.
• the PCF provides UE access selection and PDU session selection
• the PCF provides the UE access selection and PDU Session selection related policy control as defined in clause 9.5.2.

The policy control subscription data defined in TS 23.503 applies for 5G-RG and FN-RG connected via W-5GAN access, except for the definition of MPS data for a 5G-RG or FN-RG that is not applicable in this Release. The policy control subscription data defined in TS 23.503 applies for a 5G-RG and FN-RG connected via W-5GAN, except for the definition of MPS data for a 5G-RG or FN-RG that is not applicable in this Release. The V-PCF and H-PCF functionality does not apply for session and non-session policy control for 5G-RG and FN-RG users in this Release.

The SMF enforces policy decisions related to service data flow detection, authorized QoS, charging, gating, traffic usage reporting, packet routing and forwarding and traffic steering for single access PDU session over W-5GAN and multiaccess PDU sessions over W-5GAN and 3GPP as defined in clause 6.2.2 of TS 23.503 with the following modifications for W-5GAN:

• Reporting RAN/NAS Release Cause over wireline is not supported.
• The Maximum Packet Loss Rate for UL and DL is not forwarded to the wireline non-3GPP access.

The AF requests for policy control functionality described in clause 6.2.3 of TS 23.503 applies with the following clarification for W-5GAN:

• Indication that the QoS targets can no longer (or can again) be fulfilled is not supported.

The policy control related functionality defined in TS 23.503 applies, with the clarification that the UE-AMBR control by the visited network is only applicable for a 5G-RG registered over 3GPP access.

• PCF shall take Multicast Access Control list described in clause 7.7.1.1.4 as input to policy decision in the case of PDU Session used for IPTV service. PCC rules sent to SMF may indicate allowed IP Multicast Addressing information as defined in Table 9.3.1-1.
• The "Gate status" is not applicable to IGMP transmitted over PDU Session used for IPTV service.

  Comparing to Table 6.3.1 in TS 23.503, additional PCC rule information for PDU Session used for IPTV service is described in Table 9.3.1-1.