Tech-invite3GPPspaceIETF RFCsSIP
Quick21222324252627282931323334353637384‑5x

Content for  TS 23.247  Word version:  17.4.0

Top   Top   Up   Prev   Next
1…   4…   4.2…   4.3   5…   6…   7…   7.1.1.2   7.1.1.3   7.1.1.4…   7.1.1.6…   7.1.2…   7.2…   7.2.2…   7.2.3…   7.2.4…   7.2.4.3…   7.2.5…   7.3…   8…   9…   A…

 

4.2  MB service provisioningp. 13

4.2.1  Multicast data provisioningp. 13

An example for the sequence of phases for multicast data provisioning is described in the Figure below:
Reproduction of 3GPP TS 23.247, Fig. 4.2.1-1: Phases of Multicast data provisioning example
Up
The following phases are performed for a specific UE:
  • UE Session Join: UE Session Join is the process by which a UE joins an MBS Session, i.e. the UE indicates to 5GC that such UE wants to receive Multicast data identified by a specific MBS Session ID.
  • UE Session Leave: UE Session Leave is the process by which a UE leaves a MBS Session, i.e. the UE no longer wants to receive Multicast data identified by a specific MBS Session ID.
The following phases are performed for a specific service:
  • MBS Session Creation: It is the phase that the information of Multicast MBS session is created as described in clause 4.3. This step is optional.
  • Service announcement: Service announcement is used to distribute information toward UEs about the service required for service reception (e.g. IP multicast address(es)) and possibly other service related parameters (e.g. service start time). This step is optional.
  • Session Establishment: It is the phase that Multicast MBS session is established as described in clause 4.3.
  • No data receiving: It is the phase when no multicast data is received by 5GC. This step is optional.
  • Data transfer: It is the phase when Multicast data are transferred to the UEs.
  • Session Release: It is the phase that the resources for Multicast MBS session is released as described in clause 4.3.
  • Session Deletion: It is the phase that Multicast MBS session is deleted as described in clause 4.3.
The phase of Multicast data provisioning is illustrated with the following example of timeline:
Copy of original 3GPP image for 3GPP TS 23.247, Fig. 4.2.1-2: Multicast service timeline example
Figure 4.2.1-2: Multicast service timeline example
(⇒ copy of original 3GPP image)
Up

4.2.2  Broadcast data provisioningp. 15

An example for the phases of broadcast data provisioning is described in the Figure below:
Reproduction of 3GPP TS 23.247, Fig. 4.2.2-1: Phases of Broadcast data provisioning
Up
The following phases are performed for a specific service:
  • MBS Session Creation: MBS Session Creation is used by the AF to create the MBS Session towards 5GC. MBS session creation can occur in several steps (e.g. TMGI allocation, provisioning information about MBS session, request to activate the MBS session). The last step of the MBS session creation triggers resource establishment for transmitting the DL Broadcast data between 5GC and NG-RAN.
  • Service announcement: Service announcement is used to distribute information towards UEs about the service required for service reception (e.g. IP multicast address(es)) and possibly other service related parameters (e.g. service start time). This step can occur in parallel or after the MBS session configuration. However, TMGI allocation is required before. The information of the service announcement could be pre-configured at the UE side, see clause 7.3.1.
  • Data transfer: It is the phase when broadcast data are transferred in the air interface.
  • Session Release and Deletion: It is the point at which there will be no more need to transmit Broadcast data. At Session Release, the resources in 5GS are released and the broadcast MBS session is deleted.
The phase of Broadcast data provisioning is illustrated with the following example of timeline:
Copy of original 3GPP image for 3GPP TS 23.247, Fig. 4.2.2-2: Broadcast service timeline
Figure 4.2.2-2: Broadcast service timeline
(⇒ copy of original 3GPP image)
Up

Up   Top   ToC