10.2.16g MBMS Current Cell p-t-m rb Information
25.3313GPPProtocol specificationRadio Resource Control (RRC)Release 17TS
This message is transmitted periodically by UTRAN to inform UEs about the PTM RB configuration used to in a cell, in case one or more MBMS service is provided using p-t-m radio bearers. The message contents does not change within a modification period.
RLC-SAP: UM
Logical channel: MCCH
Direction: UTRAN UE
|
Information Element/Group name |
Need |
Multi |
Type and reference |
Semantics description |
Version |
|---|---|---|---|---|---|
|
Message type |
MP |
Message Type |
Current cell PTM RB info |
REL-6 |
|
|
S-CCPCH list |
OP |
1 to <maxSCCPCH> |
Absent in case MTCH are only mapped to the S-CCPCH(s) included in SIB type 5 or 5bis |
REL-6 |
|
|
>S-CCPCH identity |
OP |
MBMS Current cell S-CCPCH identity 10.3.9a.5 |
When L1- or L2 combining applies, this identity is used to refer to this S-CCPCH within the NEIGHBOURING CELL P-T-M RB INFORMATION message If the cell is operating in MBSFN mode as indicated in subclause 8.1.1.6.3 the UE behaviour upon reception of this IE is unspecified. When Chip combining (1.28Mcps TDD only) applies, this identity is used to refer to the S-CCPCH within the NEIGHBOURING CELL P-T-M RB INFORMATION message |
REL-6 |
|
|
>Secondary CCPCH info |
MP |
MBMS Common PhyCh identity 10.3.9a.2 |
Refers to a configuration in the common RB info |
REL-6 |
|
|
>MBMS Soft Combining Timing Offset |
CV-Soft-FDD |
MBMS Soft Combining Timing Offset 10.3.9a.10a |
Timing offset applied in the CFN calculation in sub-clause 8.5.15.5. The default value is 0 ms. If the cell is operating in MBSFN mode as indicated in subclause 8.1.1.6.3 the UE behaviour upon reception of this IE is unspecified. |
REL-6 |
|
|
>TrCh information common for all TrCh |
MD |
MBMS Common CCTrCh identity 10.3.9a.1 |
Refers to a (TFCS) configuration in the common RB info The default value of the TFCS is specified in subclause 14.10.1 |
REL-6 |
|
|
>TrCH information list |
MP |
1 to <maxFACHPCH> |
List of FACH transport channels carrying one or more MTCH and optionally one MSCH |
REL-6 |
|
|
>>TrCh information |
MP |
MBMS Common TrCh identity 10.3.9a.4 |
Refers to a (TFS) configuration in the common RB info |
REL-6 |
|
|
>>RB information list |
OP |
1 to <maxRBperTrCh> |
The IE is absent if temporarily no RBs are mapped to this TrCh or if the TrCH only carries MSCH |
REL-6 |
|
|
>>>RB information |
MP |
MBMS p-t-m RB information 10.3.9a.7a |
REL-6 |
||
|
>>MSCH configuration information |
OP |
MSCH configuration information 10.3.9a.16 |
REL-6 |
||
|
S-CCPCH in SIB type 5 |
OP |
1 to <maxSCCPCH> |
Every S-CCPCH’s included in SIB type 5 or 5bis may carry MTCH If the cell is operating in MBSFN mode as indicated in subclause 8.1.1.6.3 the UE behaviour upon reception of this IE is unspecified. |
REL-6 |
|
|
>S-CCPCH identity |
Integer (1..maxSCCPCH) |
Index of the S-CCPCH within the list included in SIB type 5 or 5bis |
REL-6 |
||
|
>TrCH information list |
MP |
1 to <maxFACHPCH> |
List of FACH transport channels carrying one or more MTCH and optionally one MSCH |
REL-6 |
|
|
>>TrCh identity |
MP |
Integer (1..maxFACHPCH) |
Index of the FACH within the list of TrChs defined for that S-CCPCH as included in SIB type 5 or 5bis |
REL-6 |
|
|
>>RB information list |
OP |
1 to <maxRBperTrCh> |
The IE is absent if this TrCh only carries MSCH |
REL-6 |
|
|
>>>RB information |
MP |
MBMS p-t-m RB information 10.3.9a.7a |
REL-6 |
||
|
>>MSCH configuration information |
OP |
MSCH configuration information 10.3.9a.16 |
Included if the TrCH carries MSCH |
REL-6 |
|
|
MBSFN TDM Info List |
CV-Mbsfn |
MBSFN TDM Information List 10.3.9a.12b |
REL-7 |
|
Condition |
Explanation |
|
Soft-FDD |
This IE is used only for FDD. It is mandatory default for FDD if the IE "L1 combining" is included in MBMS NEIGHBOURING CELL P-T-M RB INFORMATION. Otherwise it is not needed. |
|
Mbsfn |
The IE is optionally present if the cell supports MBSFN, and not needed otherwise. |