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Content for  TS 23.304  Word version:  18.4.0

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4 Architecture model and concepts  4.1 General concept  4.2 Architectural reference model  4.2.1 Non-roaming reference architecture  4.2.2 Roaming reference architecture 
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4  Architecture model and concepts  p. 14

4.1  General concept  p. 14

Proximity based Services (ProSe) are services that can be provided by the 5GS based on UEs being in proximity to each other.
The 5GS enablers for ProSe include the following functions:
  • 5G ProSe Direct Discovery;
  • 5G ProSe Direct Communication;
  • 5G ProSe UE-to-Network Relay;
  • 5G ProSe UE-to-UE Relay.

4.2  Architectural reference model  p. 14

4.2.1  Non-roaming reference architecture  p. 14

Figure 4.2.1-1 shows the high-level view of the non-roaming 5G System architecture for Proximity-based Services (ProSe) with service-based interfaces within the Control Plane. In this Figure, UE A and UE B use a subscription of the same PLMN.
Copy of original 3GPP image for 3GPP TS 23.304, Fig. 4.2.1-1: Non-roaming 5G System architecture for Proximity-based Services
Figure 4.2.1-1: Non-roaming 5G System architecture for Proximity-based Services
(⇒ copy of original 3GPP image)
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Figure 4.2.1-2 shows the high-level view of the non-roaming 5G System architecture for Proximity-based Services (ProSe) in reference point representation. In this figure, UE A and UE B use a subscription of the same PLMN.
Copy of original 3GPP image for 3GPP TS 23.304, Fig. 4.2.1-2: Non-roaming 5G System architecture for Proximity-based Services in reference point representation
Figure 4.2.1-2: Non-roaming 5G System architecture for Proximity-based Services in reference point representation
(⇒ copy of original 3GPP image)
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4.2.2  Roaming reference architecture  p. 16

Figure 4.2.2-1 shows the high-level view of the roaming 5G System architecture for Proximity-based Services (ProSe) with service-based interfaces within the Control Plane. In the figure, UE A uses a subscription of HPLMN.
Copy of original 3GPP image for 3GPP TS 23.304, Fig. 4.2.2-1: Roaming 5G System architecture for Proximity-based Services
Figure 4.2.2-1: Roaming 5G System architecture for Proximity-based Services
(⇒ copy of original 3GPP image)
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