| Protocol | lte-rrc | Network | lte |
|---|---|---|---|
| Spec | 3GPP TS 36.331 | Spec Section | 5.8, 6.2.2 |
| Direction | UE -> eNodeB | Message Type | MBMS Interest Reporting |
| Full message name | LTE RRC MBMS Interest Indication r11 |
|---|---|
| Protocol | LTE-RRC |
| Technology | LTE |
| Direction | UE -> eNodeB |
| Interface | Uu |
| Signaling bearer / channel | SRB1 / UL-DCCH |
| Typical trigger | Triggered when the UE needs to report MBMS interest to the network. |
| Main purpose | Lets the network understand which MBMS services or MBMS-related interest are relevant for the UE. |
| Main specification | 3GPP TS 36.331, 5.8, 6.2.2 |
| Release added | Release 11 |
| Procedures where used | MBMS interest reporting |
Uplink LTE RRC message used by the UE to report MBMS interest information to the network.
Lets the network understand which MBMS services or MBMS-related interest are relevant for the UE.
MBMS Interest Indication r11 is the UE telling the LTE network about MBMS service interest.
Call flow position: UE report used to signal MBMS interest back to the network.
Typical state: The network can use the report for later MBMS service handling.
Preconditions:
Next likely message: Later MBMS continuation
Call flow position: UE update sent when MBMS interest changed or needs to be exposed to the network.
Typical state: The report helps the network refine MBMS-related handling.
Preconditions:
Next likely message: Updated MBMS handling
Previous message(s): SystemInformationBlockType13, MBMSCountingRequest-r10
Next message(s): Later MBMS continuation
Security context: Sent as protected connected-mode signaling.
MBMSInterestIndication-r11 ::= SEQUENCE {
criticalExtensions CHOICE {
c1 CHOICE {
mbmsInterestIndication-r11 MBMSInterestIndication-r11-IEs,
spare3 NULL,
spare2 NULL,
spare1 NULL
},
criticalExtensionsFuture SEQUENCE {}
}
}
Read it as UE interest feedback for MBMS service handling.
UL-DCCH-Message
message c1 : mbmsInterestIndication-r11 : {
criticalExtensions c1 : mbmsInterestIndication-r11 : {
mbms-InterestIndication-r11 present
}
}
| IE | Required | Description |
|---|---|---|
mbms-InterestIndication-r11 | Yes | Carries the UE's MBMS interest information. |
mbms-InterestIndication-r11Carries the UE's MBMS interest information.
Presence: Required
In practice: In practice, compare this field with the original request and with any later release-dependent optional fields so you can see whether the network accepted the same service model the UE asked for.
Likely cause: MBMS interest reporting may be missing, delayed, or outdated.
What to inspect: Check whether MBMS Interest Indication r11 appears and what interest context it carries.
Next step: Treat the issue as MBMS interest signaling rather than MBMS transport failure.
It is the uplink LTE RRC message the UE uses to report MBMS interest information.
Decode this message with the 3GPP Decoder, inspect the related message database, or open the matching call flow to see where this signaling step fits in the full procedure.