3GPP 24.501 v20.0.0 — the document's own text
9.11.4.30 Requested MBS container
Taught in 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview).
The purpose of the Requested MBS container information element is for UE to request to join or leave one or more multicast MBS sessions.
The Requested MBS container information element is coded as shown in figure 9.11.4.30.1, figure 9.11.4.30.2, figure 9.11.4.30.3, figure 9.11.4.30.4 and table 9.11.4.30.1.
The Requested MBS container is a type 6 information element with a minimum length of 8 octets and a maximum length of 65538 octets.
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
|---|---|---|---|---|---|---|---|---|
| Requested MBS container IEI | octet 1 | |||||||
| Length of Requested MBS container contents | octet 2octet 3 | |||||||
| multicast MBS session information 1 | octet 4octet i | |||||||
| multicast MBS session information 2 | octet i+1*octet l* | |||||||
| … | octet l+1*octet m* | |||||||
| multicast MBS session information p | octet m+1*octet n* |
Figure 9.11.4.30.1: Requested MBS container information element
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | MBS operation | Type of multicast MBS session ID | octet 4 | ||
| spare | ||||||||
| multicast MBS session ID | octet 5octet i |
Figure 9.11.4.30.2: multicast MBS session information
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
|---|---|---|---|---|---|---|---|---|
| TMGI | octet 5 | |||||||
| octet i |
Figure 9.11.4.30.3: multicast MBS session ID for Type of multicast MBS session ID = "Temporary Mobile Group Identity (TMGI)"
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
|---|---|---|---|---|---|---|---|---|
| Source IP address information | octet 5octet v | |||||||
| Destination IP address information | Octet v+1Octet i |
Figure 9.11.4.30.4: multicast MBS session ID for Type of multicast MBS session ID = "Source specific IP multicast address for IPv4" or "Source specific IP multicast address for IPv6"
Table 9.11.4.30.1: Requested MBS container information element
| Type of multicast MBS session ID (bits 1 to 2 of octet 4) | |||
|---|---|---|---|
| Bits | |||
| 2 | 1 | ||
| 0 | 1 | Temporary Mobile Group Identity (TMGI) | |
| 1 | 0 | Source specific IP multicast address for IPv4 | |
| 1 | 1 | Source specific IP multicast address for IPv6 | |
| All other values are reserved. | |||
| MBS operation (bits 3 to 4 of octet 4) | |||
| Bits | |||
| 4 | 3 | ||
| 0 | 1 | Join multicast MBS session | |
| 1 | 0 | Leave multicast MBS session | |
| All other values are reserved. | |||
| Bits 5 to 8 of octet 4 are spare and shall be coded as zero. | |||
| If Type of multicast MBS session ID is set to "Temporary Mobile Group Identity (TMGI)", the multicast MBS session ID contains the TMGI (octet 5 to i) and is coded as described in clause 10.5.6.13 in 3GPP TS 24.008 [12] starting from octet 2. The structure of the TMGI is defined in 3GPP TS 23.003 [4]. | |||
| If Type of multicast MBS session ID is set to "Source specific IP multicast address for IPv4" or " Source specific IP multicast address for IPv6", the multicast MBS session ID contains the Source IP address information and the Destination IP address information. | |||
| Source IP address information (octet 5 to v) | |||
| This field contains the IP unicast address used as source address in IP packets for identifying the source of the multicast service. | |||
| If the type of multicast MBS session ID indicates "Source specific IP multicast address for IPv4", the Source IP address information in octet 5 to octet 8 contains an IPv4 address. If the type of multicast MBS session ID indicates "Source specific IP multicast address for IPv6", the Source IP address information in octet 5 to octet 20 contains an IPv6 address. | |||
| Destination IP address information (octet v+1 to i) | |||
| This field contains the IP multicast address used as destination address in related IP packets for identifying a multicast service associated with the source. | |||
| If the type of multicast MBS session ID indicates "Source specific IP multicast address for IPv4", the Destination IP address information in octet v+1 to octet v+4 contains an IPv4 address. If the type of multicast MBS session ID indicates "Source specific IP multicast address for IPv6", the Source IP address information in octet v+1 to octet v+16 contains an IPv6 address. | |||