TS 38.133 Clause 9.11
NR Measurements with Autonomous Gaps: CGI Identification
Technical requirements for UEs to identify Cell Global Identity (CGI) of NR target cells without network-scheduled measurement gaps.
Applicability
UE StateRRC_CONNECTED
Operation ModesSA, NR-DC, NE-DC, EN-DC
ConfigurationuseAutonomousGaps != false
TargetSingle Cell Only
Timing Requirements
Formula: Tidentify_CGI = TMIB + TSIB1
MIB Acquisition Time (TMIB)
FR1
6 × TSMTC
FR2
25 × TSMTC
SIB1 Acquisition Time (TSIB1)
6 × TRMSI-scheduling
Pattern 1: max(SIB1 TX, 20ms)
Pattern 2/3: max(SIB1 TX, TSMTC)
SNR Requirements
MIB (SSB) SNR≥ -3 dB
SIB1 (PDSCH) SNR≥ -3 dB
Lookback Window
FR1 Validity5 Seconds
FR2 Validity3 Seconds