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Cell ReselectionProcedure 6.2.5.
To perform cell reselection, follow the procedure below. LTE (serving cell) operations are in blue and neighbor cell
operations are in red.
NOTE 1: Perform initial condition setting (2.1.2) and external loss setting for each standard before
performing cell reselection.
NOTE 2: TS36.521-3 specifies the margin for cell reselection criteria as at least 6 dB.
6.2.5.1. Inter-RAT(TD-SCDMA) Cell Reselection: TD-SCDMA is lower priority.
1． [TD-SCDMA] Execute CHAN 10054 to set Common Parameter - Channel to 10054.
2． [TD-SCDMA] Execute LVL OFF to set Common Parameter - Output Level to Off.
3． [LTE] Execute OLVL_EPRE -50.0 to set Common Parameter - Output Level (EPRE) to –50.0 (dBm/15 kHz).
4． [LTE] Execute QRXLEVMIN_SIB1 -70 to set Call Processing Parameter - Qrxlevmin (SIB1) to –70 (–140 dB).
5． [LTE] Execute SNONINTRA -1 to set Call Processing Parameter - s-NonIntraSearch to Off (∞ dB).
6． [LTE] Execute THSERVLOW 30 to set Call Processing Parameter - threshServingLow to 30 (60 dB).
7． [LTE] Execute NCATDSDLUARFCN 1,10054 to set the leftmost Inter RAT (TD-SCDMA) Cell - threshX-Low to
10054.
8． [LTE] Execute NCATDSTXLOW 0 to set Call Processing Parameter - Inter RAT (TD-SCDMA) Cell - threshX-Low
to 0 (0 dB).
9． [LTE] Turn on the UE power and perform location registration (2.1.3).
10． [TD-SCDMA] Execute LVL ON to set Common Parameter - Output Level to On.
11． [TD-SCDMA] Execute OLVL -30.0 to set Common Parameter - Output Level to –30.0 dBm.
12． [LTE] Execute OLVL_EPRE -75.0 to set Common Parameter - Output Level (EPRE) to –75.0 (dBm/15 kHz), and
wait a few seconds.
13． [TD-SCDMA] Execute CALLSTATIC? and check that the call processing static status is 2 (= Idle(Regist)).
6.2.5.2. Inter-RAT(W-CDMA) Cell Reselection: W-CDMA is lower priority.
1． [W-CDMA] Execute PRESET_3GPP to initialize to the value based on 3GPP.
2． [W-CDMA] Execute DLCHAN 10700 to set DL Channel to 10700.
3． [W-CDMA] Execute INTEGRITY ON to set Integrity Protection to On.
4． [W-CDMA] Execute REGMODE COMBINED to set Registration Mode to Combined.
5． [W-SCDMA] Execute LVL OFF to set Output Level to Off.
6． [LTE] Execute OLVL_EPRE -50.0 to set Output Level (EPRE) to –50.0 (dBm/15 kHz).
7． [LTE] Execute QRXLEVMIN_SIB1 -70 to set Qrxlevmin (SIB1) to –70 (–140 dB).
8． [LTE] Execute SNONINTRA -1 to set s-NonIntraSearch to Off (∞ dB).
9． [LTE] Execute THSERVLOW 30 to set threshServingLow to 30 (60 dB).
10． [LTE] Execute NCAWCDMADLUARFCN 1,10700 to set the leftmost Inter RAT (W-CDMA) Cell - UARFCN to
10700.
11． [LTE] Execute NCAWCDMATXLOW 0 to set Inter RAT (W-CDMA) Cell - threshX-Low to 0 (0 dB).
12． [LTE] Turn on the UE power and perform location registration (2.1.3).
13． [W-CDMA] Execute LVL ON to set Output Level to On.
14． [W-CDMA] Execute OLVL -30.0 to set Output Level to –30.0 dBm.
15． [LTE] Execute OLVL_EPRE -75.0 to set Output Level (EPRE) to –75.0 (dBm/15 kHz) and wait a few seconds.
16． [W-CDMA] Execute CALLSTAT? and check that the call processing static status is 2(= Idle (Regist)).
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