A.8.3 RRC_CONNECTED state mobility
38.1333GPPNRRelease 17Requirements for support of radio resource managementTS
A.8.3.1 Handover
A.8.3.1.1 E-UTRAN – NR handover in FR1
A.8.3.1.1.1 Test Purpose and Environment
This test shall verify the E-UTRAN to NR FR1 handover requirements as specified in clause 6.1.2.1 specified in clause 5.3.4 in TS 36.133 [15].
The test comprises of one E-UTRA carrier and one NR carrier. There are two cells and one cell on each carrier. Cell 1 is the E-UTRAN and Cell 2 is an inter-RAT NR neighbour cell. The test consists of three successive time periods, with time durations of T1, T2 and T3 respectively. At the start of time duration T1, the UE does not have any timing information of Cell 2. Starting T2, Cell 2 becomes detectable and the UE is expected to detect and send a measurement report. Gap pattern configuration with id #0 as specified in Table 8.1.2.1-1 of TS 36.133 [15] is configured before T2 begins to enable inter-RAT frequency monitoring.
A RRC message implying handover shall be sent to the UE during period T2 after the UE has reported Event B2. The start of T3 is the instant when the last TTI containing the RRC message implying handover is sent to the UE. The handover message shall contain Cell 2 as the target cell.
Supported test configurations are shown in table A.8.3.1.1-1. General test parameters are provided in Table A.8.3.1.1-2. Cell specific test parameters for Cell 1 and Cell 2 are provided in Tables A.8.3.1.1-3 and A.8.3.1.1-4 respectively.
Table A.8.3.1.1-1: Supported test configurations for E-UTRAN inter-RAT NR handover
|
Configuration |
Description |
|
1 |
LTE FDD, NR 15 kHz SSB SCS, 10 MHz bandwidth, FDD duplex mode |
|
2 |
LTE FDD, NR 15 kHz SSB SCS, 10 MHz bandwidth, TDD duplex mode |
|
3 |
LTE FDD, NR 30 kHz SSB SCS, 40 MHz bandwidth, TDD duplex mode |
|
4 |
LTE TDD, NR 15 kHz SSB SCS, 10 MHz bandwidth, FDD duplex mode |
|
5 |
LTE TDD, NR 15 kHz SSB SCS, 10 MHz bandwidth, TDD duplex mode |
|
6 |
LTE TDD, NR 30 kHz SSB SCS, 40 MHz bandwidth, TDD duplex mode |
|
Note: The UE is only required to be tested in one of the supported test configurations |
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Table A.8.3.1.1-2: General test parameters for E-UTRAN inter-RAT NR handover
|
Parameter |
Unit |
Value |
Comment |
|
|
NR RF Channel Number |
1 |
1 NR carrier frequency is used in the test |
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|
LTE RF Channel Number |
2 |
1 E-UTRAN carrier frequency is used in the test |
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|
Initial conditions |
Active cell |
Cell 1 |
E-UTRAN cell |
|
|
Neighbouring cell |
Cell 2 |
NR cell |
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|
Final condition |
Active cell |
Cell 2 |
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|
NR measurement quantity |
SS-RSRP |
|||
|
E-UTRAN measurement quantity |
RSRP |
|||
|
b2-Threshold1 |
dBm |
-83 |
Absolute E-UTRAN RSRP threshold for event B2 |
|
|
b2-Threshold2NR |
dBm |
As specified in Table A.8.3.1.1-4 |
Absolute NR SS-RSRP threshold for event B2 |
|
|
Hysteresis |
dB |
0 |
||
|
TimeToTrigger |
s |
0 |
||
|
Filter coefficient |
0 |
L3 filtering is not used |
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|
DRX |
OFF |
Non-DRX test |
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|
Access Barring Information |
– |
Not sent |
No additional delays in random access procedure |
|
|
Time offset between cells |
3 ms |
Asynchronous cells |
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|
Gap pattern configuration Id |
0 |
As specified in Table 8.1.2.1-1 started before T2 starts [15] |
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|
T1 |
s |
5 |
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|
T2 |
s |
5 |
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|
T3 |
s |
1 |
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Table A.8.3.1.1-3: Cell specific test parameters for E-UTRAN inter-RAT NR handover (Cell 1)
|
Parameter |
Unit |
Configuration |
Cell 1 |
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|
T1 |
T2 |
T3 |
|||
|
RF channel number |
1, 2, 3, 4, 5, 6 |
2 |
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|
Duplex mode |
1, 2, 3 |
FDD |
|||
|
4, 5, 6 |
TDD |
||||
|
TDD special subframe configurationNote1 |
4, 5, 6 |
6 |
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|
TDD uplink-downlink configurationNote1 |
4, 5, 6 |
1 |
|||
|
BWchannel |
MHz |
1, 2, 3, 4, 5, 6 |
5 MHz: NRB,c = 25 10 MHz: NRB,c = 50 20 MHz: NRB,c = 100 |
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|
PRACH ConfigurationNote2 |
1, 2, 3 |
4 |
|||
|
4, 5, 6 |
53 |
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|
PDSCH parameters: DL Reference Measurement ChannelNote3 |
1, 2, 3 |
5 MHz: R.7 FDD 10 MHz: R.3 FDD 20 MHz: R.6 FDD |
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|
4, 5, 6 |
5 MHz: R.4 TDD 10 MHz: R.0 TDD 20 MHz: R.3 TDD |
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|
PCFICH/PDCCH/PHICH parameters: DL Reference Measurement ChannelNote3 |
1, 2, 3 |
5 MHz: R.11 FDD 10 MHz: R.6 FDD 20 MHz: R.10 FDD |
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|
4, 5, 6 |
5 MHz: R.11 TDD 10 MHz: R.6 TDD 20 MHz: R.10 TDD |
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|
OCNG PatternsNote3 |
1, 2, 3 |
5 MHz: OP.20 FDD 10 MHz: OP.10 FDD 20 MHz: OP.17 FDD |
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|
4, 5, 6 |
5 MHz: OP.9 TDD 10 MHz: OP.1 TDD 20 MHz: OP.7 TDD |
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|
PBCH_RA |
dB |
1, 2, 3, 4, 5, 6 |
0 |
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|
PBCH_RB |
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|
PSS_RA |
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|
SSS_RA |
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|
PCFICH_RB |
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|
PHICH_RA |
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|
PHICH_RB |
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|
PDCCH_RA |
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|
PDCCH_RB |
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|
PDSCH_RA |
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|
PDSCH_RB |
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|
OCNG_RANote4 |
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OCNG_RBNote4 |
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|
NocNote5 |
dBm/15kHz |
1, 2, 3, 4, 5, 6 |
-98 |
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|
Ês/Noc |
dB |
1, 2, 3, 4, 5, 6 |
7 |
7 |
7 |
|
Ês/IotNote6 |
dB |
1, 2, 3, 4, 5, 6 |
7 |
7 |
7 |
|
RSRPNote6 |
dBm/15kHz |
1, 2, 3, 4, 5, 6 |
-91 |
-91 |
-91 |
|
SCH_RPNote6 |
dBm/15kHz |
1, 2, 3, 4, 5, 6 |
-91 |
-91 |
-91 |
|
IoNote6 |
dBm/9MHz |
1, 2, 3, 4, 5, 6 |
-62.43 |
-62.43 |
-62.43 |
|
Propagation Condition |
1, 2, 3, 4, 5, 6 |
AWGN |
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|
Antenna Configuration and Correlation Matrix Note7 |
1, 2, 3, 4, 5, 6 |
1×2 Low |
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|
Note 1: Special subframe and uplink-downlink configurations are specified in table 4.2-1 in TS 36.211 [23]. Note 2: PRACH configurations are specified in table 5.7.1-2 and table 5.7.1-3 in TS 36.211 [23]. Note 3: DL RMCs and OCNG patterns are specified in clauses A 3.1 and A 3.2 of TS 36.133 [15] respectively. Note 4: OCNG shall be used such that all cells are fully allocated and a constant total transmitted power spectral density is achieved for all OFDM symbols. Note 5: Interference from other cells and noise sources not specified in the test is assumed to be constant over subcarriers and time and shall be modelled as AWGN of appropriate power for Noc to be fulfilled. Note 6: Ês/Iot, RSRP, SCH_RP and Io levels have been derived from other parameters for information purposes. They are not settable parameters themselves. Note 7: Propagation condition and correlation matrix are defined in clause B.2 in TS 36.101 [25]. |
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Table A.8.3.1.1-4: Cell specific test parameters E-UTRAN inter-RAT NR handover (Cell 2)
|
Parameter |
Unit |
Configuration |
Cell 2 |
|||
|
T1 |
T2 |
T3 |
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|
RF channel number |
1, 2, 3, 4, 5, 6 |
1 |
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|
Duplex mode |
1, 4 |
FDD |
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|
2, 3, 5, 6 |
TDD |
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|
TDD Configuration |
2, 5 |
TDDConf.1.1 |
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|
3, 6 |
TDDConf.2.1 |
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|
BWchannel |
MHz |
1, 4 |
10: NRB,c = 52 (FDD) |
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|
2, 5 |
10: NRB,c = 52 (TDD) |
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|
3, 6 |
40: NRB,c = 106 (TDD) |
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|
PDSCH reference measurement channel |
1, 4 |
SR.1.1 FDD |
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|
2, 5 |
SR.1.1 TDD |
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|
3, 6 |
SR.2.1 TDD |
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|
CORSET reference channel |
1, 4 |
CR.1.1 FDD |
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|
2, 5 |
CR.1.1 TDD |
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|
3, 6 |
CR.2.1 TDD |
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|
PRACH configuration |
FR1 PRACH configuration 1 |
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|
OCNG patternNote1 |
1, 2, 3, 4, 5, 6 |
OP.1 |
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|
BWP |
Initial DL BWP |
1, 2, 3, 4, 5, 6 |
DLBWP.0.1 |
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|
Dedicated DL BWP |
DLBWP.1.1 |
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|
Initial UL BWP |
ULBWP.0.1 |
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|
Dedicated UL BWP |
ULBWP.1.1 |
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|
SMTC configuration |
1, 2, 3, 4, 5, 6 |
SMTC.1 |
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|
SSB configuration |
1, 2, 4, 5 |
SSB.1 FR1 |
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|
3, 6 |
SSB.2 FR1 |
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|
b2-Threshold2NR |
dBm |
1, 2, 4, 5 |
-106 |
|||
|
3, 6 |
-103 |
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|
EPRE ratio of PSS to SSS |
dB |
1, 2, 3, 4, 5, 6 |
0 |
|||
|
EPRE ratio of PBCH_DMRS to SSS |
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|
EPRE ratio of PBCH to PBCH_DMRS |
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|
EPRE ratio of PDCCH_DMRS to SSS |
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|
EPRE ratio of PDCCH to PDCCH_DMRS |
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|
EPRE ratio of PDSCH_DMRS to SSS |
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|
EPRE ratio of PDSCH to PDSCH_DMRS |
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|
EPRE ratio of OCNG DMRS to SSS |
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|
EPRE ratio of OCNG to OCNG DMRS |
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|
NocNote2 |
dBm/15 KHz |
1, 2, 3, 4, 5, 6 |
-98 |
|||
|
NocNote2 |
dBm/SCS |
1, 2, 4, 5 |
-98 |
|||
|
3, 6 |
-95 |
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|
Ês/Noc |
dB |
1, 2, 3, 4, 5, 6 |
-inifinity |
0 |
0 |
|
|
Ês/IotNote3 |
dB |
1, 2, 3, 4, 5, 6 |
-inifinity |
0 |
0 |
|
|
SS-RSRPNote3 |
dBm/SCS |
1, 2, 4, 5 |
-inifinity |
-98 |
-98 |
|
|
3, 6 |
-inifinity |
-95 |
-95 |
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|
IoNote3 |
dBm/9.36 MHz |
1, 2, 4, 5 |
-70.05 |
-67.04 |
-67.04 |
|
|
dBm/38.16 MHz |
3, 6 |
-63.96 |
-60.94 |
-60.94 |
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|
Propagation condition |
1, 2, 3, 4, 5, 6 |
AWGN |
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|
Antenna Configuration and Correlation Matrix |
1, 2, 3, 4, 5, 6 |
1×2 Low |
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|
Note 1: OCNG shall be used such that both cells are fully allocated and a constant total transmitted power spectral density is achieved for all OFDM symbols. Note 2: Interference from other cells and noise sources not specified in the test is assumed to be constant over subcarriers and time and shall be modelled as AWGN of appropriate power for Noc to be fulfilled. Note 3: Ês/Iot, SS-RSRP, and Io levels have been derived from other parameters for information purposes. They are not settable parameters themselves. |
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A.8.3.1.1.2 Test Requirements
The UE shall start to transmit the PRACH to Cell 2 less than 85 ms from the beginning of time period T3.
The rate of correct handovers observed during repeated tests shall be at least 90%.
NOTE: The handover delay can be expressed as: RRC procedure delay + Tinterrupt, where:
RRC procedure delay = 50 ms and is specified in TS36.331.
Tinterrupt = 62 ms in the test; Tinterrupt is defined in TS36.133 clause 5.3.4.3.
This gives a total of 112 ms.