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Content for  TS 23.554  Word version:  19.2.0

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6 Identities  6.1 Identities for MSGin5G Service endpoints  6.1.1 General  6.1.2 UE Service Identity (UE Service ID)  6.1.3 Application Server Service Identity (AS Service ID)  6.1.4 Message Gateway Service Identity (MGW Service ID)  6.2 MSGin5G Group Service Identity (Group Service ID)  6.3 Broadcast Area Service Identity (Broadcast Area ID)  6.4 MSGin5G UE Identity (MSGin5G UE ID)  6.5 Non-MSGin5G UE identity (Non-MSGin5G UE ID)  6.6 Application Identity (Application ID)  6.7 MSGin5G Server address 
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6  Identities  p. 24

6.1  Identities for MSGin5G Service endpoints  p. 24

6.1.1  General  p. 24

MSGin5G Service endpoints shall be identified by unique identifiers within the MSGin5G Service domain. For each MSGin5G Service endpoint the identifier shall be a unique URI that can be used to identify the MSGin5G Service endpoint's home service domain.
The following clauses describe different types of MSGin5G Service endpoint identifiers.

6.1.2  UE Service Identity (UE Service ID)  p. 24

UE Service ID is the identifier of a UE (i.e. MSGin5G UE, Legacy 3GPP UE or Non-3GPP UE).
For an MSGin5G UE, the assigned UE Service ID is used by the MSGin5G Client to register with the MSGin5G Server and to send and receive MSGin5G messages. It is used by the MSGin5G Server to authenticate and authorize the associated UE to the MSGin5G Service at the application layer.
For a Legacy 3GPP UE or a Non-3GPP UE, the assigned UE Service ID is used by the Message Gateway to register with the MSGin5G Server on behalf of Legacy 3GPP UE or Non-3GPP UE, to map into the Service ID in their defined message delivery mechanisms for interworking, and to send/receive MSGin5G messages to/from MSGin5G Server on behalf of Legacy 3GPP UE or Non-3GPP UE.
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6.1.3  Application Server Service Identity (AS Service ID)  p. 25

AS Service ID is the identifier of an Application Server. It is used to perform mutual authentication with the MSGin5G Server for establishing a secured service connection, and it is used to send/receive message API request/response to/from other MSGin5G Service endpoints via MSGin5G Server.

6.1.4  Message Gateway Service Identity (MGW Service ID)  p. 25

MGW Service ID is the identifier of Message Gateway. It is used to perform mutual authentication with the MSGin5G Server for establishing a secured service connection.

6.2  MSGin5G Group Service Identity (Group Service ID)  p. 25

The Group Service ID is a unique identifier within the MSGin5G Service that represents a pre-defined MSGin5G Group. A pre-defined MSGin5G Group is established before the MSGin5G Group messages are sent to it, and is assigned a unique and permanent Group Service ID when it is established. This Group Service ID shall be communicated to all members of the group. A service endpoint (MSGin5G UE or Application Server) shall use this Group Service ID to send a message to all members of the group.
The Group Service ID shall be a unique URI that can be used to identify where the group is hosted.
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6.3  Broadcast Area Service Identity (Broadcast Area ID)  p. 25

The Broadcast Area ID is the identity of the Service Area where the broadcast message is delivered.

6.4  MSGin5G UE Identity (MSGin5G UE ID)  p. 25

The MSGin5G UE ID is a unique identifier that represents the MSGin5G UE (i.e. the device identifier of the MSGin5G UE). The MSGin5G UE ID may be pre-configured to the MSGin5G UE by its vendor.

6.5  Non-MSGin5G UE identity (Non-MSGin5G UE ID)  p. 25

The Non-MSGin5G UE ID is a unique identifier that represents the Non-MSGin5G UE. A Non-MSGin5G UE ID is associated with a specific Non-MSGin5G UE. It is used by the Message Gateway in the MSGin5G Service to record the Non-MSGin5G UE. It is also used by the Message Gateway as a part of VAL UE ID when the Message Gateway executes the Non-MSGin5G UE configuration procedure on behalf of a Non-MSGin5G UE. The format of Non-MSGin5G UE ID may differ among different VALs. The non-MSGin5G ID may be pre-configured to the Non-MSGin5G UE by its vendor.
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6.6  Application Identity (Application ID)  p. 25

Application ID is an identifier that represents the application for which the payload of message is intended. The content of Application ID is outside the scope of this document.

6.7  MSGin5G Server address  p. 26

MSGin5G Server address is the identifier of an MSGin5G Server within an MSGin5G service provider's domain. The MSGin5G Service endpoints in this MSGin5G service provider's domain can contact an MSGin5G Server by using the MSGin5G Server address of this MSGin5G Server.

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