LTE FDD/TDD Signal Analyzer Measurement Guide : LTE MIB/SIB Decode : Introduction
 
Introduction
This chapter provides detailed information of the LTE SIB MEASUREMENT header sections and the corresponding fields, sub fields and their description. Refer to SIB Measurement for detailed information on SIB measurement.
Downlink Control Information (DCI)
The DCI header section consists of the following fields. See Table: DCI Header Section.
 
DCI Header Section
Field Name
Sub Fields
Range
Default Value
Description
rnti
 
[0,65535]
0
The RNTI value which is decoded from the CRC.
Location
 
 
0
This structure contains information regarding the search space location of the DCI.
AggregationLevel
{1,2,4,8}
0
The aggregation level ("L") of the decoded DCI as defined in TS 36.213, Section 9.1.1
nCce
[0,(N{CCE,k} -1)
0
The CCE corresponding to the PDCCH as defined in TS 36.213, Section 9.1.1
dciFormat
 
{"Format0", "Format1A", "Format1C"}
“”
This field represents the DCI format as a string
mcsIdx
 
[0,31]
0
This field represents the modulation and coding scheme. It has a length of 5 bits if higher layer parameter altMCS-Table is not configured, 6 bits otherwise, as defined in subclause 7.1.7 of [3]
redundancyVersion
 
[0,4]
0
This field represents the redundancy version (RV) as defined in TS 36.212, Section 5.3.3.
newDataIndicator
 
{FALSE,TRUE}
FALSE
This field represents the new data indicator (NDI) as defined in TS 36.212, Section 5.3.3.
resourceIndicatorVal
 
Variable
0
This field represents the resource indicator value (RIV) as defined in TS 36.213, Section 7.1.6.
The range of this value depends on the DCI Format.
harqPid
 
Variable
0
This field represents the HARQ process number as defined in TS 36.212, Section 5.3.3.
The length is 4 bits if higher layer parameter dl-TTI-Length is configured for the cell, otherwise 3 bits for Format1_A, not applicable for Format1_C.
nGap
 
Variable
0
This field represents the RB gap value as defined in TS 36.211, Table 6.2.3.2-1.
Master Information Block (MIB)
The MIB header section consists of the following fields with corresponding range, default value and description. See Table: MIB Header Section.
 
MIB Header Section
Field Name
Range
Default Value
Description
dlBandWidth
{6,15,25,50,75,100}
0
transmission bandwidth configuration, NRB in downlink, see TS 36.101 [42], table 5.6-1. n6 corresponds to 6 resource blocks, n15 to 15 resource blocks and so on.
phichDuration
{“normal”, “extended”}
“”
Specifies the PHICH configuration. If the UE is a BL UE or UE in CE, it shall ignore this field.
This parameter informs about the number of symbols per subframe used by PHICH.
phichResource
{"oneSixth", "half", "one", "two"}
“”
Specifies the PHICH configuration. If the UE is a BL UE or UE in CE, it shall ignore this field.
This parameter represents the Allocation value ("Ng") which determines the number of PHICH groups per subframe.
systemFrameNum
[0,1023]
0
Defines the 10 bit system frame number (SFN). As indicated in TS 36.211 [21], 6.6.1, the 2 least significant bits of the SFN are acquired implicitly in the P-BCH decoding, i.e. timing of 40ms P-BCH TTI indicates 2 least significant bits (within 40ms P-BCH TTI, the first radio frame: 00, the second radio frame: 01, the third radio frame: 10, the last radioframe: 11). One value applies for all serving cells of a Cell Group (i.e. MCG or SCG). The associated functionality is common (i.e. not performed independently for each cell).
schedulingInfoSib1
[0,31]
0
Indicates the index to the tables that define SystemInformationBlockType1 scheduling information. The tables are specified in TS 36.213 [23], Table 7.1.6-1 and Table 7.1.7.2.7-1. Value 0 means that SystemInformationBlockType1 is not scheduled.
spare
[0,15]
0
The last 4 bits of the MIB which are defined as spare bits
MIB Data
The MIB data header section consists of the following fields. See Table: MIB Data Header Section.
 
MIB Data Header Section
Field Name
Range
Default Value
Description
N/A
N/A
“”
PBCH decoded data represented in hexadecimal format.
 
System Information Block (SIB)
The SIB header section consists of the following fields. The SIB data structure consists of a list of data elements that have the following fields which are part of the 'PLMN-IdentityInfoList' RRC structure.
See Table: SIB Header Section.
 
SIB Header Section
Field Name
Sub Fields
Range
Default Value
Description
cellBarred
 
{FALSE, TRUE}
FALSE
Indicates whether the cell allows UEs to camp on this cell, as specified in TS 38.304 [20].
True indicates cell has been barred. Default value is false in case of MIB decode failure.
cellId
 
28 bit string
“”
Unambiguous identity of a cell within a PLMN.
CellIdentity:= BIT STRING (SIZE (28)).
csgIndication
 
 
 
If set to TRUE the UE is only allowed to access the cell if it is a CSG member cell, if selected during manual CSG selection or to obtain limited service, see TS 36.304 [4].
freqBandIndicator
 
 
 
A list of as defined in TS 36.101 [42], table 6.2.4-1, for the frequency band in freqBandIndicator.
intraFreqReselection
 
{FALSE, TRUE}
FALSE
Controls cell reselection to intra-frequency cells when the highest ranked cell is barred, or treated as barred by the UE, as specified in TS 38.304 [20}.
Default value is false in case of MIB decode failure.
pMax
 
 
0
Value applicable for the intra-frequency neighbouring E-UTRA cells. If absent the UE applies the maximum power according to the UE capability.
plmnIdentityInfo
 
 
Absent if empty
This structure consists of the following information elements.
plmnIdList
Variable
 
It is a list of PLMN identities. The first listed PLMN-Identity is the primary PLMN. NOTE 1.
cellReservedFor
OperatorUse
{FALSE, TRUE}
absent if empty
FALSE
Indicates whether the cell is reserved for operator use, as defined in TS 36.304 [4].
Info Results
 
 
 
The Info results data structure consists of a list of data elements that have the following fields (represented by subfields):
Carrier
Variable len string
Not displayed if absent
The carrier information represented as a string corresponding to the decoded MCC-MNC code
Country
Variable len string
Not displayed if absent
The name of the country represented as a string corresponding to the decoded MCC code
MCC
[0, 999]
Not displayed if absent
The 3 digit mobile county code (MCC) code decoded from SIB1 data.
MCC::= SEQUENCE (SIZE (3)) OF MCC-MNC-Digit.
MNC
[0, 999]
Not displayed if absent
The 3 digit Mobile Network Code (MNC) code decoded from SIB1 data.
MNC::= SEQUENCE (SIZE (2..3)) OF MCC-MNC-Digit
cellReservedForOperatorUse
 
{FALSE, TRUE}
not displayed if absent
Indicates whether the cell is reserved for operator use (per PLMN), as defined in TS 38.304 [20].
cellId
 
36 bits
not displayed if absent
Unambiguous identity of a cell within a PLMN
trackingAreaCode (optional)
 
24 bits
Empty string, if absent
The IE TrackingAreaCode is used to identify a tracking area within the scope of a PLMN, see TS 24.301 [35].
TrackingAreaCode::= BIT STRING (SIZE (16))
qRxLevMin
 
 
 
Parameter "Qrxlevmin" in TS 36.304 [4], applicable for intra-frequency neighbour cells.
SIB Data
The SIB data header section consists of the following fields. See Table: SIB data Header Section.
SIB data Header Section
Field Name
Range
Default Value
Description
N/A
N/A
“”
SIB1 data represented in hexadecimal format.
Anritsu Hardware Status
The Anritsu Hardware Status header section consists of the following fields. Table: Anritsu Hardware Status Header Section.
Anritsu Hardware Status Header Section
Field Name
Description
hardwareErrors
Description of any hardware errors present during the measurement.For e.g. ADC Overrange, ALC UnlevelHigh, etc.
statusMessage
statusBchDecodeFailed: PBCH decoding failed
statusInsufficientBwForCoreset: Insufficient Bandwidth available for CORESET0 decoding. Try measurement again by increasing the BW.
statusCoreset0Unavailable: CORESET 0 is not configured in the MIB data. Obtained if kSSB value is greater than maximum possible value.
statusDciDecodeFailed: Failed to demodulate CORESET 0 / decode DCI.
statusSchDecodeFailed: Failed to demodulate PDSCH data / decode SCH.
statusSib1DecodeDone: SIB1 decode done successfully.
statusNumber
Status number corresponding to the status message. If the status number is 40, then the SIB decode is considered to be successful.