MIB包含的信息，每40ms传输一次，重复10ms一次
1 DL带宽，发送天线数，参考信号功率
2 系统帧号SFN
3 PHICH配置
MasterInformationBlock ::= SEQUENCE {
dl-Bandwidth ENUMERATED { n6, n15, n25, n50, n75, n100},
phich-Config PHICH-Config,
systemFrameNumber BIT STRING (SIZE (8)),
spare BIT STRING (SIZE (10))
}
MIB和SIB的传输
下面是MIB和SIB的传输周期，MIB一般都在子帧0发送，SIB1都在子帧5发送
SIB 1
i) Cell Access Related Information - PLMN Identity List, PLMN Identity, TA Code, Cell identity & Cell Status
ii) Cell Selection Information - Minimum Receiver Level
iii) Scheduling Information - SI message type & Periodicity, SIB mapping Info, SI Window length
SIB 2
i) Access Barring Information - Access Probability factor, Access Class Baring List, Access Class Baring Time
ii) Semi static Common Channel Configuration - Random Access Parameter, PRACH Configuration
iii) UL frequency Information - UL EARFCN, UL Bandwidth, additional emmission
SIB 3
i) Information/Parameters for intra-frequency cell reselections
SIB 4
i) Information on intra-frequency neighboring cells
SIB 5
i) Information on inter-frequency neighboring cells
SIB 6
i) Information for reselection to UMTS (UTRAN) cells
SIB 7
i) Information for reselection to GSM (GERAN) cells
SIB 8
i) Information for reselection to CDMA2000 systems
SIB 9
i) Home eNodeB name for future LTE femtocell applications
SIB 10 + 11
i) ETWS (Earthquake and Tsunami Warning System) information
SIB 12
i) Commercial Mobile Alerting System (CMAS) information.
除了sib1是静态调度的，其他的Sib消息的调度是按照sib1中的配置再进行下面的调度的。
si-WindowLength是SIB消息的窗长度，在此窗长度内才会进行各个SIB消息的调度，每一个sib消息都会有一个窗，而且都等于该值。各个sib消息的窗彼此不会交接，并且彼此紧靠。
在上图的配置下，以sib2为例，假设sib2消息仅传输一次（可重传），那么他就会在
Sfn/sib2_periodicity == 0, subFn = 0的位置下发，也即160，320，480…的位置下发
以sib3为例，假设sib3消息仅传输一次（可重传），那么他就会在
Sfn/sib3_periodicity == 0, subFn = 0的位置下发，也即340，660，980…的位置下发；注意到:
340 = 320 + 20
660 = 640 + 20
980 = 960 + 20
以此类推其他的sib消息
SIB的调度资源
另外，sib消息调度的时候会有两个PRB的信息：
一个是指示SIB消息的tbSize的大小用的（与MCS值共同指定），DCI消息中用TPC来代替，因为SIB消息的内容都比较少，所以一般用2 -3个PRB来调度即可（实际调度时可以是1个PRB）。假如PRB为3，则是TPC = 1，否则为2，TCP = 0。
另一个是真实调度使用的PRB个数，在DCI中填入PRB那一项。
SIB消息更新
在LTE的系统消息SIB1中包括一个valuetag，此参数用来指示SI消息是否发生了变化。UE可以使用这个值，例如在重新进入网络覆盖时，来验证以前获取的SI消息是否还有效。如果SIB1中包括的valuetag与存储的不一样，UE认为除了SIB10/ SIB11/SIB12之外的所有存储的系统信息都无效。
systeminfovaluetag取值为0-31，5比特，当系统消息改变时，基站将其值+1，UE发现此值变更了，就知道系统消息有更新，此时就需要重读系统消息（除SIB10/ SIB11/SIB12外）。36331中还约定，如果3小时内系统消息不变，ue就不会重复读取系统消息。但反过来，超过3小时，就算系统消息没有变化，UE也需要重读系统消息。 刚才说，如果基站系统消息某些参数变更了，基站将systeminfovaluetag+1，但据了解，也有减1的。 其实对UE而言无影响，UE只需判断systeminfovaluetag和以前是否有变化，从而决定之后的动作。
结合log，在SIB1中找到了Valuetag这个值。如前所述，这是一个标签，目的是系统消息的有效性的判断及系统消息变更的一种机制。 但有5个系统块不适用，MIB，SIB1，SIB10，SIB11，SIB12。
SIB信息
< SIB 1 >
i) Cell Access Related Information - PLMN Identity List, PLMN Identity, TA Code, Cell identity & Cell Status
ii) Cell Selection Information - Minimum Receiver Level
iii) Scheduling Information - SI message type & Periodicity, SIB mapping Info, SI Window length
(DL EARFCN=44540 PCI=61) RRC BCCH DL SCH System Information Block Type 1 message :
message: c1 (0)
c1: systemInformationBlockType1 (1)
systemInformationBlockType1
cellAccessRelatedInfo
plmn-IdentityList: 1 item
Item 0
PLMN-IdentityInfo
plmn-Identity
mcc: 3 items
Item 0
MCC-MNC-Digit: 3
Item 1
MCC-MNC-Digit: 1
Item 2
MCC-MNC-Digit: 1
mnc: 2 items
Item 0
MCC-MNC-Digit: 4
Item 1
MCC-MNC-Digit: 2
cellReservedForOperatorUse: notReserved (1)
trackingAreaCode: 0001 [bit length 16, 0000 0000 0000 0001 decimal value 1]
cellIdentity: 00018110 [bit length 28, 4 LSB pad bits, 0000 0000 0000 0001 1000 0001 0001 .... decimal value 6161]
cellBarred: notBarred (1)
intraFreqReselection: notAllowed (1)
.... ..0. csg-Indication: False
cellSelectionInfo
q-RxLevMin: -120dBm (-60)
q-RxLevMinOffset: 2dB (1)
p-Max: 23dBm
freqBandIndicator: 43
schedulingInfoList: 4 items
Item 0
SchedulingInfo
si-Periodicity: rf16 (1)
sib-MappingInfo: 0 items
Item 1
SchedulingInfo
si-Periodicity: rf32 (2)
sib-MappingInfo: 1 item
Item 0
SIB-Type: sibType3 (0)
Item 2
SchedulingInfo
si-Periodicity: rf64 (3)
sib-MappingInfo: 1 item
Item 0
SIB-Type: sibType4 (1)
Item 3
SchedulingInfo
si-Periodicity: rf512 (6)
sib-MappingInfo: 1 item
Item 0
SIB-Type: sibType9 (6)
tdd-Config
subframeAssignment: sa1 (1)
specialSubframePatterns: ssp7 (7)
si-WindowLength: ms20 (5)
systemInfoValueTag: 9
< SIB 2 >
i) Access Barring Information - Access Probability factor, Access Class Baring List, Access Class Baring Time
ii) Semi static Common Channel Configuration - Random Access Parameter, PRACH Configuration
iii) UL frequency Information - UL EARFCN, UL Bandwidth, additional emmission
iv) MBSFN Configuration
(DL EARFCN=44540 PCI=61) RRC BCCH DL SCH System Information message [ SIB2 ] :
message: c1 (0)
c1: systemInformation (0)
systemInformation
criticalExtensions: systemInformation-r8 (0)
systemInformation-r8
sib-TypeAndInfo: 1 item
Item 0
sib-TypeAndInfo item: sib2 (0)
sib2
radioResourceConfigCommon
rach-ConfigCommon
preambleInfo
numberOfRA-Preambles: n8 (1)
preamblesGroupAConfig
sizeOfRA-PreamblesGroupA: n8 (1)
messageSizeGroupA: b144 (1)
messagePowerOffsetGroupB: dB0 (1)
powerRampingParameters
powerRampingStep: dB2 (1)
preambleInitialReceivedTargetPower: dBm-90 (15)
ra-SupervisionInfo
preambleTransMax: n20 (7)
ra-ResponseWindowSize: sf10 (7)
mac-ContentionResolutionTimer: sf48 (5)
maxHARQ-Msg3Tx: 4
bcch-Config
modificationPeriodCoeff: n2 (0)
pcch-Config
defaultPagingCycle: rf32 (0)
nB: oneThirtySecondT (7)
prach-Config
rootSequenceIndex: 22
prach-ConfigInfo
prach-ConfigIndex: 1
.... 0... highSpeedFlag: False
zeroCorrelationZoneConfig: 5
prach-FreqOffset: 40
pdsch-ConfigCommon
referenceSignalPower: 5dBm
p-b: 1
pusch-ConfigCommon
pusch-ConfigBasic
n-SB: 1
hoppingMode: interSubFrame (0)
pusch-HoppingOffset: 8
...0 .... enable64QAM: False
ul-ReferenceSignalsPUSCH
.... 0... groupHoppingEnabled: False
groupAssignmentPUSCH: 0
..0. .... sequenceHoppingEnabled: False
cyclicShift: 0
pucch-ConfigCommon
deltaPUCCH-Shift: ds3 (2)
nRB-CQI: 2
nCS-AN: 0
n1PUCCH-AN: 8
soundingRS-UL-ConfigCommon: release (0)
release: NULL
uplinkPowerControlCommon
p0-NominalPUSCH: -70dBm
alpha: al07 (4)
p0-NominalPUCCH: -96dBm
deltaFList-PUCCH
deltaF-PUCCH-Format1: deltaF0 (1)
deltaF-PUCCH-Format1b: deltaF5 (2)
deltaF-PUCCH-Format2: deltaF1 (2)
deltaF-PUCCH-Format2a: deltaF2 (2)
deltaF-PUCCH-Format2b: deltaF2 (2)
deltaPreambleMsg3: 8dB (4)
ul-CyclicPrefixLength: len1 (0)
ue-TimersAndConstants
t300: ms1000 (5)
t301: ms1000 (5)
t310: ms1000 (5)
n310: n10 (6)
t311: ms1000 (0)
n311: n1 (0)
freqInfo
additionalSpectrumEmission: 1
timeAlignmentTimerCommon: infinity (7)
nonCriticalExtension
< SIB 3 >
i) Information/Parameters for intra-frequency cell reselections
(DL EARFCN=44540 PCI=61) RRC BCCH DL SCH System Information message [ SIB3 ] :
message: c1 (0)
c1: systemInformation (0)
systemInformation
criticalExtensions: systemInformation-r8 (0)
systemInformation-r8
sib-TypeAndInfo: 1 item
Item 0
sib-TypeAndInfo item: sib3 (1)
sib3
cellReselectionInfoCommon
q-Hyst: dB1 (1)
speedStateReselectionPars
mobilityStateParameters
t-Evaluation: s30 (0)
t-HystNormal: s30 (0)
n-CellChangeMedium: 5
n-CellChangeHigh: 10
q-HystSF
sf-Medium: dB-4 (1)
sf-High: dB-4 (1)
cellReselectionServingFreqInfo
s-NonIntraSearch: 62dB (31)
threshServingLow: 62dB (31)
cellReselectionPriority: 7
intraFreqCellReselectionInfo
q-RxLevMin: -128dBm (-64)
p-Max: 23dBm
s-IntraSearch: 62dB (31)
.0.. .... presenceAntennaPort1: False
neighCellConfig: Not all neighbour cells have the same MBSFN subframe allocation as serving cell (0)
t-ReselectionEUTRA: 1s
t-ReselectionEUTRA-SF
sf-Medium: oDot25 (0)
sf-High: oDot25 (0)
nonCriticalExtension
< SIB 4 >
i) Information on intra-frequency neighboring cells
(DL EARFCN=44540 PCI=61) RRC BCCH DL SCH System Information message [ SIB4 ] :
message: c1 (0)
c1: systemInformation (0)
systemInformation
criticalExtensions: systemInformation-r8 (0)
systemInformation-r8
sib-TypeAndInfo: 1 item
Item 0
sib-TypeAndInfo item: sib4 (2)
sib4
nonCriticalExtension
< SIB 5 >
i) Information on inter-frequency neighboring cells
< SIB 6 >
i) Information for reselection to UMTS (UTRAN) cells
< SIB 7 >
i) Information for reselection to GSM (GERAN) cells
< SIB 8 >
i) Information for reselection to CDMA2000 systems
< SIB 9 >
i) Home eNodeB name � for future LTE femtocell applications
< SIB 10 / SIB 11 >
i) ETWS (Earthquake and Tsunami Warning System) information
< SIB 12 >
i) Commercial Mobile Alerting System (CMAS) information.
< SIB 13 >
i) MBSFN (eMBMS) Area Configuration
ii) MCCH Configuration
< SIB 14 >
< SIB 15 >
i) MBMS SAI (Service Area Identities) Configuration
< SIB 16 >
i) GPS Related Informatin
< SIB 17 >
i) WLAN Configuration for LTE-WLAN Interworking
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