Tech-invite3GPPspecsSIPRFCs
Overview21222324252627282931323334353637384‑5x

Content for  TS 23.280  Word version:  17.5.0

Top   Top   Up   Prev   Next
1…   5…   7…   7.4…   7.5…   8…   9…   10…   10.1.2…   10.1.3…   10.1.5…   10.2…   10.2.3…   10.2.5…   10.3…   10.7…   10.7.3…   10.7.3.7…   10.7.3.10…   10.8…   10.8.4…   10.9…   10.9.3…   10.9.3.8…   10.10…   10.11…   10.12…   10.13…   10.13.3…   10.14…   10.15…   10.15.3…   A…   B…

 

10.7  Use of MBMS transmissionWord‑p. 127

10.7.1  General

This subclause defines information flows and procedures for MBMS usage that applies to MC services. MBMS bearers can be used by any MC service for any MC service group. A single MBMS bearer can be used for one or more MC services within a single group or by multiple group communications in parallel.
The following subclauses specify the procedures and information flows for the usage of MBMS transmission that are utilised by the following MC services:
MC service specific pre-requisites and resultant behaviour by functional entities in performing these procedures are specified in the respective MC service TSs as listed above.
Up

10.7.2  Information flows for MBMS transmission

10.7.2.1  MBMS bearer announcement

Table 10.7.2.1-1 describes the information flow MBMS bearer announcement from the MC service server to the MC service client.
Information element Status Description
TMGIMTMGI information
Alternative TMGIOA list of additional alternative TMGI may be included and used in roaming scenarios.
QCIOQCI information used by the ProSe UE-Network Relay to determine the ProSe Per-Packet Priority value to be applied for the multicast packets relayed to Remote UE over PC5
List of service area identifierMA list of service area identifier for the applicable MBMS broadcast area.
FrequencyOIdentification of frequency if multi carrier support is provided
SDP informationMSDP with media and floor control information applicable to groups that can use this bearer (e.g. codec, protocol id, FEC information)
Monitoring stateOThe monitoring state is used to control if the client is actively monitoring the MBMS bearer quality or not.
Announcement acknowledgmentOIndicate if the MBMS server requires an acknowledgement of the MBMS bearer announcement.
Unicast statusOAn indication that the listening status of the unicast bearer is requested.
ROHC informationOIndicate the usage of ROHC and provide the parameters of the ROHC channel to signal to the ROHC decoder.
Up

10.7.2.2  MBMS listening status reportWord‑p. 128
Table 10.7.2.2-1 describes the information flow for the MBMS listening status report from MC service client to MC service server. The information is used for the decision on the switching from MBMS bearer to unicast bearer or vice versa.
Information element Status Description
MC service IDMThe identity of the MC service user who wants to report the MBMS listening status.
TMGI(s)MTMGI(s) information.
MBMS listening status(s)MThe MBMS listening status per TMGI.
MBMS reception quality levelOThe reception quality level per TMGI (see NOTE)
Unicast listening statusOThe unicast listening status.
Up

10.7.2.3  MBMS suspension reporting instruction

Table 10.7.2.3-1 describes the information flow for the MBMS suspension reporting instruction from MC service server to MC service client in a unicast bearer for MBMS suspension reporting.
Information element Status Description
MC service IDMThe MC service identity
Suspension reportingMEnables or disable the suspension reporting for a specific MC service client
Table 10.7.2.3-2 describes the information flow for the MBMS suspension reporting instruction from MC service server to MC service client in a multicast bearer for MBMS suspension reporting.
Information element Status Description
Suspension reporting client subsetMContains a uniquely defined subset of MC service clients that shall report MBMS suspension
Up

10.7.2.4  Discover bearer requestWord‑p. 129
Table 10.7.2.4-1 describes the information flow discover bearer request from the MC service server to another MC service server (MBMS bearer control role).
Information element Status Description
List of service area identifiersMA list of service area identifier for the applicable MBMS broadcast area.
BandwidthMMaximum bandwidth required
QCIODesired QCI
Up

10.7.2.5  Discover bearer response

Table 10.7.2.5-1 describes the information flow discover bearer response from an MC service server (MBMS bearer control role) to the MC service server.
Information element Status Description
TMGIsMList of TMGIs and related information
List of service area identifiersMA list of service area identifiers for the applicable MBMS broadcast areas, corresponding to the listed TMGIs, over which the request was successful.
FrequencyOIdentification of the frequency if multi-carrier support is provided
QCIOQCI information used by the ProSe UE-Network relay to determine the ProSe per-packet priority value to be applied for the multicast packets relayed to a remote UE over PC5.
Up

10.7.2.6  Media distribution request

Table 10.7.2.6-1 describes the information flow media distribution request from the MC service server to an MC service server (MBMS bearer control role) that has a desired bearer.
Information element Status Description
TMGIMTMGI information
BandwidthMMaximum bandwidth required
Separate floor controlMWhether or not a separate bearer is required for floor control
SDP informationMSDP with media and floor control information applicable to groups that can use this bearer (e.g. codec, protocol id)
QCIODesired QCI
MC Group IDOThe MC group id for when the request is sent for a specific group call.
Up

10.7.2.7  Media distribution request responseWord‑p. 130
Table 10.7.2.7-1 describes the information flow media distribution response from an MC service server (MBMS bearer control role) that has a desired bearer to the MC service server.
Information element Status Description
TMGIMTMGI information
BandwidthMMaximum bandwidth required
SDP informationMSDP with media and floor control information applicable to groups that can use this bearer (e.g. codec, protocol id)
QCIOActual QCI
Media stream identifierOThis element identifies the media stream of the SDP used for the group call (e.g. MBMS subchannel).
Media distribution indicatorOIndicates to the MC service server whether the media in the ongoing group communication should be sent or not
Up

10.7.2.8  Identify multicast participants request

Void

10.7.2.9  Remove call from bearer request

Void

10.7.2.10  Media distribution release |R15|

Table 10.7.2.10-1 describes the information flow media distribution release from the MC service server to an MC service server (MBMS bearer control role) that has the used bearer.
Information element Status Description
TMGIMTMGI information
BandwidthMThe bandwidth released by the MC service server that used the bearer
MC Group IDOThe MC group id for when the request is sent for a specific group call.
Up

10.7.2.11  Media broadcasting notification |R15|

Void.

10.7.2.12  Group status notification |R16|

Table 10.7.2.12-1 describes the information flow for the group status notification from MC service server to MC service client.
Information element Status Description
MC service group IDMThe MC service group ID of the group
Status of the groupMIndicate the group has on-going call or not
Up


Up   Top   ToC