Content for TS 23.554 Word version: 19.3.0
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8.7.6 Broadcast message delivery |R18| p. 107
8.7.6.1 General p. 107
This clause introduces a Broadcast message procedure for an Application Server and an MSGin5G UE to send a Broadcast message. In this procedure, an MSGin5G message is delivered via broadcast to MSGin5G UEs or non-MSGin5G UEs in a Broadcast Area.
8.7.6.2 Broadcast message delivery procedure p. 107
Figure 8.7.6.2-1 shows the Broadcast message delivery procedure from Application Server or MSGin5G UE to the UEs in Broadcast Area.
Pre-condition:
- Application Server or MSGin5G Client in MSGin5G UE has registered with the MSGin5G Server.
Step 1.
If the Delivery status requested information element is included in the MSGin5G Broadcast message, a recipient MSGin5G UE sends the delivery report as specified in clause 8.3.4.
An MSGin5G message request is sent by an Application Server or an MSGin5G UE to the MSGin5G Server as specified in clause 8.3.2 with following clarifications:
Step 2.
- The MSGin5G message includes Originating UE Service ID/AS service ID, Broadcast Area ID and Message ID information elements in Table 8.3.2-1, and may include Delivery status required, Application ID, Payload information elements from Table 8.3.2-1.
The MSGin5G Server determines if the Application Server or MSGin5G Client is authorized to send a Broadcast message.
Step 3.
The MSGin5G Server forwards the Broadcast message request to the CBCF (as specified in TS 23.041) via the Broadcast Message Gateway based on the Broadcast Area ID as specified in clause 8.3.3.
Step 4.
The Broadcast Message Gateway delivers the message to the CBCF which broadcasts the message to the MSGin5G UEs in the Broadcast Area or to the non-MSGin5G UEs in the Broadcast Area. This step is out of scope of the present specification.
