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Content for  TS 23.304  Word version:  18.4.0

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5.1.5  Authorization and Provisioning for 5G ProSe UE-to-UE Relay |R18|p. 40

5.1.5.1  Policy/Parameter provisioning for 5G ProSe UE-to-UE Relayp. 40

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 (User Info ID, Relay Service Code(s), UE-to-UE Relay Layer 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.
      • Default Destination Layer-2 ID(s) for sending Relay Discovery Announcement message and 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 Relay Discovery for each Relay Service Code.
  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). 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.
      • Default Destination Layer-2 ID(s) for sending 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 Relay Discovery for each Relay Service Code.
  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.
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5.1.5.2  Principles for applying parameters for 5G ProSe UE-to-UE Relayp. 42

5.1.5.2.1  Principles for applying parameters for ProSe UE-to-UE Relay discoveryp. 42
The general principles for applying policy/parameters defined in clause 5.1.1a apply to the 5G ProSe UE-to-UE Relay discovery service.
5.1.5.2.2  Principles for applying parameters for 5G ProSe UE-to-UE Relay communicationp. 42
The general principles for applying policy/parameters defined in clause 5.1.1a apply to the 5G ProSe UE-to-UE Relay communication service.

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