3GPP TR 38.875 V17.0.0 (2021-03)
7.8 Combinations of UE complexity reduction features .........................................................................................32
7.8.1 Description of feature combinations............................................................................................................32
7.8.2 Analysis of UE complexity reduction..........................................................................................................32
7.8.3 Analysis of performance impacts.................................................................................................................33
7.8.4 Analysis of coexistence with legacy UEs ....................................................................................................34
7.8.5 Analysis of specification impacts ................................................................................................................34
8 UE power saving features .......................................................................................................................34
8.1 Introduction to UE power saving features.........................................................................................................34
8.2 Reduced PDCCH monitoring ............................................................................................................................35
8.2.1 Description of feature...................................................................................................................................35
8.2.2 Analysis of UE power saving ......................................................................................................................35
8.2.3 Analysis of performance impacts.................................................................................................................39
8.2.4 Analysis of coexistence with legacy UEs ....................................................................................................48
8.2.5 Analysis of specification impacts ................................................................................................................48
8.3 Extended DRX for RRC Inactive and/or Idle....................................................................................................48
8.3.1 Description of feature...................................................................................................................................48
8.3.2 Analysis of UE power saving ......................................................................................................................49
8.3.3 Analysis of upper and lower bound of extended DRX cycles .....................................................................49
8.3.4 Analysis of mechanisms for extended DRX................................................................................................50
8.4 RRM relaxation for stationary devices..............................................................................................................51
8.4.1 Description of feature...................................................................................................................................51
8.4.2 RRM relaxation in RRC_IDLE and RRC_INACTIVE...............................................................................51
8.4.3 RRM relaxation in RRC_CONNECTED ....................................................................................................54
8.4.4 Analysis of UE power saving ......................................................................................................................55
9 Coverage recovery ..................................................................................................................................56
9.0 Introduction to coverage recovery.....................................................................................................................56
9.1 Coverage recovery evaluation ...........................................................................................................................56
9.1.1 Urban scenario at 2.6 GHz...........................................................................................................................56
9.1.2 Rural scenario at 0.7 GHz............................................................................................................................58
9.1.3 Urban scenario at 4 GHz..............................................................................................................................60
9.1.4 Indoor scenario at 28 GHz ...........................................................................................................................62
9.1.5 Summary of coverage recovery evaluation..................................................................................................64
9.2 Coverage recovery for PUSCH .........................................................................................................................65
9.2.1 Description of coverage recovery features...................................................................................................65
9.2.2 Analysis of coexistence with legacy UEs ....................................................................................................65
9.2.3 Analysis of specification impacts ................................................................................................................65
9.3 Coverage recovery for PDSCH .........................................................................................................................65
9.3.1 Description of coverage recovery features...................................................................................................65
9.3.2 Analysis of coexistence with legacy UEs ....................................................................................................66
9.3.3 Analysis of specification impacts ................................................................................................................66
9.4 Coverage recovery for PDCCH.........................................................................................................................66
9.4.1 Description of coverage recovery features...................................................................................................66
9.4.2 Analysis of coexistence with legacy UEs ....................................................................................................66
9.4.3 Analysis of specification impacts ................................................................................................................67
10 Definition and constraining of reduced capabilities ...............................................................................67
10.1 Definition of reduced capabilities......................................................................................................................67
10.2 Constraining of reduced capabilities .................................................................................................................69
10.2.1 Description of feature...................................................................................................................................69
11 UE identification and access restrictions ................................................................................................70
11.1 UE identification................................................................................................................................................70
11.1.1 Description of feature...................................................................................................................................70
11.2 Access restrictions .............................................................................................................................................75
11.2.1 Description of feature...................................................................................................................................75
11.2.2 Cell barring ..................................................................................................................................................75
11.2.3 Unified access control..................................................................................................................................75
11.2.4 RRC connection reject .................................................................................................................................76
11.2.5 Analysis of coexistence with legacy UEs ....................................................................................................76
11.2.6 Analysis of specification impacts ................................................................................................................76
