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Measurement Rules for Cell Reselection 6.2.2.
After completing location registration to a cell, the UE evaluates non-serving cells in preparation for executing cell
reselection. The following criteria must be unsatisfied to perform evaluation. If the following criteria are satisfied,
whether or not to perform evaluation depends on the UE.
・Intra-frequency Cell Reselection
Srxlev > S
IntraSearchP
AND Squal > S
IntraSearchQ
・Inter frequency and Inter-RAT Cell Reselection
Srxlev > S
nonIntraSearchP
AND Squal > S
nonIntraSearchQ
Inter-frequency is evaluated with these criteria because the MT8821C LTE cell priorities are all the same. Inter-RAT
is also evaluated with these criteria because the LTE cell reselection priority is set to the highest.
Since the MT8821C does not transmit S
IntraSearchQ
/S
nonIntraSearchQ
of SystemInformationBlockType3, the UE applies the
value of 0 dB for S
IntraSearchQ
/S
nonIntraSearchQ
. Consequently, Squal > S
IntraSearchQ
and Squal > S
nonIntraSearchQ
are fulfilled as
described in Chapter 6.2.1. When SystemInformationBlockType3 does not include S
IntraSearchP
/S
nonIntraSearchP
(s-IntraSearch = Off, s-NonIntraSearch = Off), the UE applies the value of infinity for S
IntraSearchP
/S
nonIntraSearchP
.
Therefore the evaluation result is Srxlev < S
IntraSearchP
, Srxlev < S
nonIntraSearchP
and the neighbour cell evaluation
criteria are fulfilled.
- Refer to the Cell Reselection Operation Procedure (6.2.5) for how to set S
IntraSearchP
.
- These criteria are defined in 3GPP TS36.304 5.2.4.2.
- Refer to 3GPP TS36.331 for each message element of SystemInformationBlockType.