LTE system information block introduction (SIB3)

SIB3 IE introduction. SIB3 contains mainly cell re-selection information for intra-frequency.

(1) IE cellReselectionInfoCommon
IE q-Hyst, this value is in unit of dB, it is Qhyst in 36.304. This value is applied when UE detected itself in Medium-mobility or High-mobility state (Only if TCRmax, NCR_M, NCR_H and TCRmaxhyst is sent in SIB3). The criteria of detecting Medium-mobility state or High-mobility state is as follows (Quoted from 36.304 5.2.4.3):

Medium-mobility state criteria:

• If number of cell reselections during time period TCRmax exceeds NCR_M, and not exceed NCR_H

High-mobility state criteria:

• If number of cell reselections during time period TCRmax exceeds NCR_H

The UE shall not count consecutive reselections between same two cells into mobility state detection criteria if same cell is reselected just after one other reselection.

(2) IE cellReselectionServingFreqInfo

IE s-NonIntraSearch = SnonIntraSearchP. If the field s-NonIntraSearchP is present, the UE applies the value of s-NonIntraSearchP instead. Otherwise if neither s-NonIntraSearch nor s-NonIntraSearchP is present, the UE applies the (default) value of infinity for SnonIntraSearchP

IE threshServingLow