Content for  TS 23.304  Word version:  19.1.0

The following information is provisioned in the UE in support of the UE assuming the role of a 5G ProSe UE-to-UE Relay:

1. Authorisation policy for acting as a 5G ProSe Layer-3 and/or Layer-2 UE-to-UE Relay:
   • when the UE is "served by NG-RAN":
     • PLMNs in which the UE is authorized to relay traffic for 5G ProSe Layer-3 and/or Layer-2 End UEs accessing 5G ProSe UE-to-UE Relays over PC5 reference point.
   • when the UE is not "served by NG-RAN":
     • Indicates whether the UE is authorized to relay traffic for 5G ProSe Layer-3 and/or Layer-2 End UEs accessing 5G ProSe UE-to-UE Relays over PC5 reference point.
   • The authorisation for a UE to act as a 5G ProSe UE-to-UE Relay also authorizes the use of 5G ProSe UE-to-UE Relay Discovery with Model A and Model B.
2. ProSe Relay Discovery policy/parameters for 5G ProSe UE-to-UE Relay:
   • Includes the parameters that enable the UE to perform 5G ProSe UE-to-UE Relay Discovery when provided by PCF or provisioned in the ME or configured in the UICC:
     • 5G ProSe UE-to-UE Relay Discovery parameters (Relay Service Code(s), UE-to-UE Relay Layer indicator, Network Assistance Security Indicator). The UE-to-UE Relay Layer indicator indicates whether the associated RSC is offering 5G ProSe Layer-2 or Layer-3 UE-to-UE Relay service. Network Assistance Security Indicator indicates whether the associated RSC is offering security procedures with or without network assistance when the 5G ProSe UE-to-UE Relay is served by NG-RAN.
     • Default Destination Layer-2 ID(s) for sending Relay Discovery Announcement message and sending/receiving Relay Discovery Solicitation messages;
     • Default Destination Layer-2 ID(s) for sending/receiving Direct Communication Request message for ProSe UE-to-UE Relay Communication with integrated Discovery;
     • For 5G ProSe Layer-3 UE-to-UE Relay, the traffic type (IP, Ethernet, Unstructured) to be used for the relayed traffic for each Relay Service Code;
     • Includes security related content for 5G ProSe UE-to-UE Relay, see TS 33.503.
3. Validity time indicating the expiration time of the Policy/Parameter for 5G ProSe UE-to-UE Relay discovery and communication.

The following information is provisioned in the UE in support of the UE assuming the role of a 5G ProSe End UE and thereby enabling the use of a 5G ProSe UE-to-UE Relay:

1. Authorisation policy for using a 5G ProSe Layer-3 and/or Layer-2 UE-to-UE Relay:
   • When the UE is "served by NG-RAN":
     • PLMNs in which the UE is authorized to use a 5G ProSe Layer-3 and/or Layer-2 UE-to-UE Relay.
   • When the UE is "not served by NG-RAN":
     • Indicates whether the UE is authorised to use a 5G ProSe Layer-3 and/or Layer-2 UE-to-UE Relay.
   The authorisation for a UE to act as a 5G ProSe End UE also authorizes the use of 5G ProSe UE-to-UE Relay discovery with Model A and Model B.
2. Policy/parameters for 5G ProSe UE-to-UE Relay Discovery:
   • Includes the parameters for 5G ProSe UE-to-UE Relay Discovery as a 5G ProSe End UE and for enabling the UE to connect to the 5G ProSe UE-to-UE Relay after discovery when provided by PCF or provisioned in the ME or configured in the UICC:
     • 5G ProSe UE-to-UE Relay Discovery parameters (User Info ID, Relay Service Code(s), UE-to-UE Relay Layer indicator, Network Assistance Security Indicator). The UE-to-UE Relay Layer indicator indicates whether the associated RSC is offering 5G ProSe Layer-2 or Layer-3 UE-to-UE Relay service. Network Assistance Security Indicator indicates whether the associated RSC is offering security procedures with or without network assistance when the 5G ProSe UE-to-UE Relay is served by NG-RAN.
     • Default Destination Layer-2 ID(s) for sending/receiving Relay Discovery Solicitation messages and receiving Relay Discovery Announcement message;
     • Default Destination Layer-2 ID(s) for sending/receiving Direct Communication Request message for ProSe UE-to-UE Relay Communication with integrated Discovery;
     • For 5G ProSe Layer-3 UE-to-UE Relay, the traffic type (IP, Ethernet, Unstructured) to be used for the relayed traffic for each Relay Service Code;
     • Includes security related content for 5G ProSe UE-to-UE Relay, see TS 33.503.
3. Validity time indicating the expiration time of the Policy/Parameter for 5G ProSe UE-to-UE Relay discovery and communication.

The following information is provisioned in the UE in support of the UE assuming the role of a 5G ProSe UE-to-UE Relay as well as in the UE in support of the UE assuming the role of a 5G ProSe End UE and thereby enabling the use of a 5G ProSe UE-to-UE Relay:

1. Radio parameters for 5G ProSe UE-to-UE Relay Discovery when the UE is not "served by NG-RAN":
   • Includes the radio parameters NR PC5 with Geographical Area(s) and an indication of whether they are "operator managed" or "non-operator managed". The UE uses the radio parameters to perform 5G ProSe Direct Discovery over PC5 reference point when "not served by NG-RAN" only if the UE can reliably locate itself in the corresponding Geographical Area. Otherwise, the UE is not authorized to transmit.
   • Default PC5 DRX configuration (see TS 38.331).
2. Radio parameters for 5G ProSe UE-to-UE Relay communication when the UE is not "served by NG-RAN":
   • Includes the radio parameters NR PC5 with Geographical Area(s) and an indication of whether they are "operator managed" or "non-operator managed". The UE uses the radio parameters to perform 5G ProSe Direct Communication over PC5 reference point when "not served by NG-RAN" only if the UE can reliably locate itself in the corresponding Geographical Area. Otherwise, the UE is not authorized to transmit.

The following information is provisioned in the UE in support of the UE assuming the role of a 5G ProSe Layer-3 UE-to-UE Relay supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay:

1. Authorisation policy for acting as a 5G ProSe Layer-3 UE-to-UE Relay supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay:
   • when the UE is "served by NG-RAN":
     • PLMNs in which the UE is authorized to relay traffic for 5G ProSe Layer-3 End UEs supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay accessing 5G ProSe Layer-3 UE-to-UE Relays supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay over PC5 reference point.
   • when the UE is not "served by NG-RAN":
     • Indicates whether the UE is authorized to relay traffic for 5G ProSe Layer-3 End UEs supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay accessing 5G ProSe Layer-3 UE-to-UE Relays supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay over PC5 reference point.
   • The authorisation for a UE to act as a 5G ProSe Layer-3 UE-to-UE Relay supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay also authorizes the use of 5G ProSe Layer-3 multi-hop UE-to-UE Relay Discovery with Model A and Model B.
2. ProSe Relay Discovery policy/parameters for 5G ProSe Layer-3 UE-to-UE Relay supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay:
   • Includes the parameters that enable the UE to perform 5G ProSe Layer-3 multi-hop UE-to-UE Relay Discovery when provided by PCF or provisioned in the ME or configured in the UICC:
     • 5G ProSe Layer-3 multi-hop UE-to-UE Relay Discovery parameters (User Info ID, Relay Service Code(s), UE-to-UE Relay Layer indicator, multi-hop indicator per RSC, maximum number of hops per RSC). The UE-to-UE Relay Layer indicator indicates the associated RSC is offering 5G ProSe Layer-3 UE-to-UE Relay service. The multi-hop indicator indicates whether the associated RSC can be supported for 5G ProSe Layer-3 multi-hop UE-to-UE Relay operation. The maximum number of hops per RSC indicates the maximum number of hops can be supported for the associated RSC.
     • Default Destination Layer-2 ID(s) for sending Relay Discovery Announcement message and sending/receiving Relay Discovery Solicitation messages;
     • For 5G ProSe Layer-3 UE-to-UE Relay supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay, the traffic type (IP, Ethernet, Unstructured) to be used for the relayed traffic for each Relay Service Code;
3. Validity time indicating the expiration time of the Policy/Parameter for 5G ProSe Layer-3 multi-hop UE-to-UE Relay discovery and communication.

The following information is provisioned in the UE in support of the UE assuming the role of a 5G ProSe Layer-3 End UE supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay and thereby enabling the use of a 5G ProSe Layer-3 UE-to-UE Relay supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay:

1. Authorisation policy for using a 5G ProSe Layer-3 UE-to-UE Relay supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay:
   • When the UE is "served by NG-RAN":
     • PLMNs in which the UE is authorized to use a 5G ProSe Layer-3 UE-to-UE Relay supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay.
   • When the UE is "not served by NG-RAN":
     • Indicates whether the UE is authorised to use a 5G ProSe Layer-3 UE-to-UE Relay supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay.
     The authorisation for a UE to act as a 5G ProSe Layer-3 End UE supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay also authorizes the use of 5G ProSe Layer-3 UE-to-UE Relay discovery with Model A and Model B.
2. Policy/parameters for 5G ProSe Layer-3 multi-hop UE-to-UE Relay Discovery:
   • Includes the parameters for 5G ProSe Layer-3 multi-hop UE-to-UE Relay Discovery as a 5G ProSe Layer-3 End UE supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay and for enabling the UE to connect to the 5G ProSe Layer-3 UE-to-UE Relay after discovery when provided by PCF or provisioned in the ME or configured in the UICC:
     • 5G ProSe Layer-3 multi-hop UE-to-UE Relay Discovery parameters (Relay Service Code(s), UE-to-UE Relay Layer indicator, multi-hop indicator per RSC, maximum number of hops per RSC). The UE-to-UE Relay Layer indicator indicates the associated RSC is offering 5G ProSe Layer-3 UE-to-UE Relay service. The multi-hop indicator indicates whether the associated RSC can be supported for 5G ProSe Layer-3 multi-hop UE-to-UE Relay operation. The maximum number of hops per RSC indicates the maximum number of hops can be supported for the associated RSC.
     • Default Destination Layer-2 ID(s) for sending/receiving Relay Discovery Solicitation messages and receiving Relay Discovery Announcement message;
     • For 5G ProSe Layer-3 Remote UE supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay, the traffic type (IP, Ethernet, Unstructured) to be used for the relayed traffic for each Relay Service Code;
3. Validity time indicating the expiration time of the Policy/Parameter for 5G ProSe Layer-3 multi-hop UE-to-UE Relay discovery and communication.

The following information is provisioned in the UE in support of the UE assuming the role of a 5G ProSe Layer-3 UE-to-UE Relay supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay as well as in the UE in support of the UE assuming the role of a 5G ProSe Layer-3 End UE supporting 5G ProSe Layer-3 multi-hop UE-to-UE Relay and thereby enabling the use of a 5G ProSe Layer-3 UE-to-UE Relay:

1. Radio parameters for 5G ProSe Layer-3 multi-hop UE-to-UE Relay Discovery when the UE is not "served by NG-RAN":
   • Includes the radio parameters NR PC5 with Geographical Area(s) and an indication of whether they are "operator managed" or "non-operator managed". The UE uses the radio parameters to perform 5G ProSe Direct Discovery over PC5 reference point when "not served by NG-RAN" only if the UE can reliably locate itself in the corresponding Geographical Area. Otherwise, the UE is not authorized to transmit.
   • Default PC5 DRX configuration (see TS 38.331).
2. Radio parameters for 5G ProSe Layer-3 multi-hop UE-to-UE Relay communication when the UE is not "served by NG-RAN":
   • Includes the radio parameters NR PC5 with Geographical Area(s) and an indication of whether they are "operator managed" or "non-operator managed". The UE uses the radio parameters to perform 5G ProSe Direct Communication over PC5 reference point when "not served by NG-RAN" only if the UE can reliably locate itself in the corresponding Geographical Area. Otherwise, the UE is not authorized to transmit.