Monday, 9 June 2014

System Information Block -4 in LTE (SIB-4)

 Ø  Contains neighboring cell related information relevant only for intra-frequency cell re-selection
 Ø  Includes cells with specific re-selection parameters as well as blacklisted cells
 Ø  All the contents of SIB4 are optional because UE's can automatically detect and complete neighbor INTRA_frequency cells


Information’s:

intraFreqNeighCellList
[1-16 instances]
List of intra-frequency neighbouring cells with specific cell re-selection parameters
IntraFreqNeighCellInfo

physCellId
Physical CellID of the neighbour cell
q-OffsetCell
specifies the offset between the two cells. Value -24 - +24dB
intraFreqBlackCellList
[1-16 instances]
List of blacklisted intra-frequency neighbouring cells. These type of cells are not considered for cell re-selection
csg_PhysCellIdRange
Set of physical cell identities reserved for CSG cells on the frequency on which this field was received. The received csg-PhysCellIdRange applies if less than 24 hours has elapsed since it was received and it was received in the same primary PLMN. This field is Optional (mandatory for CSG cell)

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