10.2.48 SYSTEM INFORMATION
25.3313GPPProtocol specificationRadio Resource Control (RRC)Release 17TS
This message is used by the UTRAN to convey system information blocks to the UE.
RLC-SAP: TM
Logical channel: BCCH
Direction: UTRANUE
|
Information Element/Group name |
Need |
Multi |
Type and reference |
Semantics description |
|---|---|---|---|---|
|
SFNprime |
CV-channel2 |
Integer(0..4094 by step of 2) |
SFN=SFNprime (for first 10ms frame of 20ms TTI), SFN=SFNprime+1 (for last 10ms frame of 20ms TTI) |
|
|
CHOICE Segment combination |
MP |
Five spares are needed |
||
|
>Combination 1 |
(no data) |
|||
|
>Combination 2 |
||||
|
>>First Segment |
MP |
First Segment, 10.2.48.1 |
||
|
>Combination 3 |
||||
|
>>Subsequent Segment |
MP |
Subsequent Segment, 10.2.48.3 |
||
|
>Combination 4 |
||||
|
>>Last segment |
MP |
Last segment (short),10.2.48.5 |
||
|
>Combination 5 |
NOTE 2 |
|||
|
>>Last segment |
MP |
Last Segment (short)10.2.48.5 |
||
|
>>First Segment |
MP |
First Segment (short), 10.2.48.2 |
||
|
>Combination 6 |
NOTE 2 |
|||
|
>>Last Segment |
MP |
Last Segment (short), 10.2.48.5 |
||
|
>>Complete list |
MP |
1 to maxSIBperMsg |
NOTE 1 |
|
|
>>>Complete |
MP |
Complete SIB (short),10.2.48.7 |
||
|
>Combination 7 |
NOTE 2 |
|||
|
>>Last Segment |
MP |
Last Segment (short), 10.2.48.5 |
||
|
>>Complete list |
MP |
1..< maxSIBperMsg> |
NOTE 1 |
|
|
>>>Complete |
MP |
Complete SIB (short),10.2.48.7 |
||
|
>>First Segment |
MP |
First Segment (short), 10.2.48.2 |
||
|
>Combination 8 |
NOTE 2 |
|||
|
>>Complete list |
MP |
1 to maxSIBperMsg |
NOTE 1 |
|
|
>>>Complete |
MP |
Complete SIB (short),10.2.48.7 |
||
|
>Combination 9 |
NOTE 2 |
|||
|
>>Complete list |
MP |
1..MaxSIBperMsg |
NOTE 1 |
|
|
>>>Complete |
MP |
Complete SIB (short),10.2.48.7 |
||
|
>>First Segment |
MP |
First Segment (short), 10.2.48.2 |
||
|
>Combination 10 |
||||
|
>>>Complete SIB of size 215 to 226 |
MP |
Complete SIB,10.2.48.6 |
||
|
>Combination 11 |
||||
|
>>Last segment of size 215 to 222 |
MP |
Last segment,10.2.48.4 |
||
|
NOTE 1: If Combination 6 – 9 contains a Master information block, the Master information block shall be located as the first IE in the list. |
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|
NOTE 2: If one of the combinations 5 to 9 is used, the IE "SIB type" = "Extension Type" should not occur more than once in that message, otherwise the UE behaviour is unspecified. |
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|
Condition |
Explanation |
|
channel2 |
This IE is mandatory present if the channel is BCH, otherwise it is not needed. |
If the encoded message does not fill a transport block, the RRC layer shall insert padding according to subclause 12.1. Padding is needed e.g. if the remaining space is insufficient to start a new First Segment (which requires several bits for SIB type, SEG_COUNT and SIB data).