Reselection from 4G to 3G Set from LTE side Parameter QrxLevmin (LTE) Snonintrasearch
Value TDD -128 18
Threshold Serving low
Value FDD -120 8
10
8
QrxLevmin (3G)
-116
-116
Theshold x Low
6
4
LTE (7) , 3G (5,4,3)
LTE (7) , 3G (5,4,3)
1sec
1sec
Reselection Priority Time to Trigger
Description
Indicates the minimum required Rx Indicates the measurement trigger threshold for reselection to inter-fre inter-RAT cells Indicates the threshold used in the of reselection to a cell on a lower p UTRAN frequency (UTRAN) Indicates the minimum quality leve for a cell on the UTRAN frequency t candidate for reselection Indicates the minimum RX level req neighboring cell on the UTRAN freq become a candidate for reselection Indicates the cell reselection priorit neighboring UTRAN frequency. The indicates the lowest priority Indicates the evaluation period for determine whether to reselect a UT camp on.
Equation RSRP_Serv< QrxLevmin+ Threshold Serving low AND RSCP_Tar> QrxLevmin+ Theshold x Low TDD Reselect to 3G when Serving LTE is lower than FDD Reselect to 3G when Serving LTE is lower than
Reselection from 3G to 4G Set from UMTS side
-118
and Target 3G is better than
-111
-112
and Target 3G is better than
-111
Parameter Qrxlevmin (LTE)
Value TDD -114
Thresh x high
Value FDD -108
0
0
Description
Minimum required Rx Level on the po cell to be become a candidate for res Added to the QrxLevmin
Equation RSRP_Targ(LTE)> Qrxlevmin+ Thresh x high TDD Reselect to 4G when Target 4G is higher than FDD Reselect to 4G when Target 4G is higher than
-114 -108
Redirection from 4G to 3G Set from LTE side Parameter A1 Event RSRP– (Stop
Value TDD
Value FDD
-137
-104
Description
Indicates the RSRP threshold for inte
Measurement) A2 Event – Start Measurement
A2 Hysteresis
Time to Trigger
Blind Redirection offset B1
-141
-110
2
2
640ms
480ms
6
6
-103
-103
measurement event A1. When the m RSRP value of the serving cell excee threshold, an event A1 report will be Indicates the RSRP threshold for inte measurement event A2. When the measured RSRP value of t cell is below this threshold, an event will be sent Indicates the hysteresis for inter-RAT measurement events A1 and A2. Thi parameter is used to prevent freque triggering of event evaluation cause signal fluctuation When detecting that the signal quali serving cell meets the entering cond UE does not send a measurement re eNodeB immediately. Instead, the UE report only when the signal quality c meets the entering condition during to-trigger. Indicates the offset of the event A2 t for inter-RAT blind redirections relativ event A2 threshold for handovers. Indicates the RSCP threshold for eve related to coverage-based inter-RAT to UTRAN.
This parameter specifies the require RSCP of the target UTRAN cell B1 Hysteresis Time to Trigger
1
1
640ms
640ms
Indicates the hysteresis for event B1 inter-RAT handover to UTRAN Indicates the time-to-trigger for even related to inter-RAT handover to UTR
Equation Starting Meas Criterion: RSRP_Serv
Thresh (B1)+ Hys OR
RSRP_Serv
-104
-143
do Redirection when UTRAN RSCP be
-108
do Redirection when UTRAN RSCP be
FDD Start UTRAN Measurement when A2 Criteria met at
-104
CSFB Event based: Release LTE with UTRAN frequency list with Priorities.
