A.5.5.3 Cell Reselection to GSM
25.1333GPPRelease 17Requirements for support of radio resource management (FDD)TS
A.5.5.3.1 Test Purpose and Environment
The purpose of this test is to verify the requirement for the cell re-selection delay in CELL_FACH state in section 5.5.2.1.4.
This scenario implies the presence of 1 UTRAN serving cell, and 1 GSM cell to be re-selected. The UE is requested to monitor neighbouring cells on 1 UMTS carrier and 6 GSM cells. Test parameters are given in Table, A.5.4A, A.5.4B, A.5.4C, A.5.4D, A.5.4E.
Table A.5.4A: General test parameters for UTRAN to GSM Cell Re-selection
|
Parameter |
Unit |
Value |
Comment |
|
|
Initial condition |
Active cell |
Cell1 |
||
|
Neighbour cell |
Cell2 |
|||
|
Final condition |
Active cell |
Cell2 |
||
|
HCS |
Not used |
|||
|
Neighbour cell list size |
24 FDD neighbours on Channel 1 6 GSM neighbours including ARFCN 1 |
|||
|
T1 |
s |
5 |
||
|
T2 |
s |
10 |
||
The transport and physical parameters of the S-CCPCH carrying the FACH are defined in Table A.5.3A and Table A.5.3B.
Table A.5.4B: Physical channel parameters for S-CCPCH.
|
Parameter |
Unit |
Level |
|
Channel bit rate |
kbps |
60 |
|
Channel symbol rate |
ksps |
30 |
|
Slot Format #I |
– |
4 |
|
TFCI |
– |
OFF |
|
Power offsets of TFCI and Pilot fields relative to data field |
dB |
0 |
Table A.5.4C: Transport channel parameters for S-CCPCH
|
Parameter |
FACH |
|
Transport Channel Number |
1 |
|
Transport Block Size |
240 |
|
Transport Block Set Size |
240 |
|
Transmission Time Interval |
10 ms |
|
Type of Error Protection |
Convolution Coding |
|
Coding Rate |
½ |
|
Rate Matching attribute |
256 |
|
Size of CRC |
16 |
|
Position of TrCH in radio frame |
Fixed |
Table A.5.4D: Cell re-selection UTRAN to GSM cell case (cell 1)
|
Parameter |
Unit |
Cell 1 (UTRA) |
|
|
T1 |
T2 |
||
|
UTRA RF Channel Number |
Channel 1 |
||
|
CPICH_Ec/Ior |
dB |
-10 |
|
|
PCCPCH_Ec/Ior |
dB |
-12 |
|
|
SCH_Ec/Ior |
dB |
-12 |
|
|
PICH_Ec/Ior |
dB |
-15 |
|
|
S-CCPCH_Ec/Ior |
dB |
-12 |
|
|
OCNS_Ec/Ior |
dB |
-1.295 |
|
|
|
dB |
0 |
-5 |
|
|
dBm/3,84 MHz |
‑70 |
|
|
CPICH_Ec/Io |
dB |
-13 |
-16.2 |
|
CPICH_RSCP |
dBm |
-80 |
-85 |
|
Propagation Condition |
AWGN |
||
|
Cell_selection_and_ |
CPICH Ec/Io |
||
|
Qqualmin |
dB |
-20 |
|
|
Qrxlevmin |
dBm |
-115 |
|
|
UE_TXPWR_MAX_ |
dBm |
21 |
|
|
Qoffset1s, n |
dB |
C1, C2: 0 |
|
|
Qhyst1 |
dB |
0 |
|
|
Treselection |
s |
0 |
|
|
SsearchRAT |
dB |
Not sent |
|
|
IE "FACH Measurement occasion info" |
Sent |
||
|
FACH Measurement occasion cycle length coefficient |
3 |
||
|
Inter-frequency FDD measurement indicator |
FALSE |
||
|
Inter-frequency TDD measurement indicator |
FALSE |
||
|
Inter-RAT measurement indicators |
Included |
||
|
>RAT type |
GSM |
||
Table A.5.4E: Cell re-selection UTRAN to GSM cell case (cell 2)
|
Parameter |
Unit |
Cell 2 (GSM) |
|
|
T1 |
T2 |
||
|
Absolute RF Channel Number |
ARFCN 1 |
||
|
RXLEV |
dBm |
-90 |
-75 |
|
RXLEV_ACCESS_ |
dBm |
-104 |
|
|
MS_TXPWR_MAX_ |
dBm |
33 |
|
A.5.5.3.2 Test Requirements
The cell re-reselection delay is defined as the time from the beginning of time period T2, to the moment when the UE starts to transmit the random access in Cell 2 (the GSM cell).
The cell re-selection delay shall be less than 5.5 + TRA s.
The rate of correct reselections observed during repeated tests shall be at least 90%.
NOTE: The cell re-selection delay can be expressed
ms
where:
Tidentify,GSM Specified in 8.4.2.5.2.1, here it is 2880 ms
Tmeasurement, GSM Specified in 5.5.2.1.4, here it is 640 ms
TBCCH According to [21], the maximum time allowed to read the BCCH data, when being synchronized to a BCCH carrier, is 1.9 s.
TRA The additional delay caused by the random access procedure in the GSM cell. Shall be defined by T1/RF when the test case is further detailed in TS 34.121.
This gives a total of 5.46 +TRA s, allow 5.5 + TRA s.
A.5.5.3A Cell Reselection to GSM in DRX
A.5.5.3A.1 Test Purpose and Environment
The purpose of this test is to verify the requirement for the cell re-selection delay in CELL_FACH state in section 5.5.2.1.4.
This scenario implies the presence of 1 UTRAN serving cell, and 1 GSM cell to be re-selected. The UE is requested to monitor neighbouring cells on 1 UMTS carrier and 6 GSM cells. Test parameters are given in Table, A.5.4E1, A.5.4E2, and A.5.4E3.
Table A.5.4E1: General test parameters for UTRAN to GSM Cell Re-selection
|
Parameter |
Unit |
Value |
Comment |
|
|
Initial condition |
Active cell |
Cell1 |
||
|
Neighbour cell |
Cell2 |
|||
|
Final condition |
Active cell |
Cell2 |
||
|
HS-DSCH DRX cycleFACH |
frames |
4 |
DRX cycle length |
|
|
HS-DSCH Rx burstFACH |
frames |
2 |
On time during DRX cycle |
|
|
T321 |
msec |
100 |
Time before the DRX cycle is activated |
|
|
Neighbour cell list size |
24 FDD neighbours on Channel 1 6 GSM neighbours including ARFCN 1 |
|||
|
T1 |
s |
5 |
||
|
T2 |
s |
10 |
||
Table A.5.4E2: Cell re-selection UTRAN to GSM cell case (cell 1)
|
Parameter |
Unit |
Cell 1 (UTRA) |
|
|
T1 |
T2 |
||
|
UTRA RF Channel Number |
Channel 1 |
||
|
CPICH_Ec/Ior |
dB |
-10 |
|
|
PCCPCH_Ec/Ior |
dB |
-12 |
|
|
SCH_Ec/Ior |
dB |
-12 |
|
|
PICH_Ec/Ior |
dB |
-15 |
|
|
HS-PSDCH_Ec/Ior (Note 1) |
dB |
-10 |
|
|
HS-SCCH_Ec/Ior (Note 1) |
dB |
-13 |
|
|
OCNS_Ec/Ior |
dB |
-1.837 |
|
|
|
dB |
0 |
-5 |
|
|
dBm/3,84 MHz |
‑70 |
|
|
CPICH_Ec/Io |
dB |
-13 |
-16.2 |
|
CPICH_RSCP |
dBm |
-80 |
-85 |
|
Propagation Condition |
AWGN |
||
|
Cell_selection_and_ |
CPICH Ec/Io |
||
|
Qqualmin |
dB |
-20 |
|
|
Qrxlevmin |
dBm |
-115 |
|
|
UE_TXPWR_MAX_ |
dBm |
21 |
|
|
Qoffset1s, n |
dB |
C1, C2: 0 |
|
|
Qhyst1 |
dB |
0 |
|
|
Treselection |
S |
0 |
|
|
SsearchRAT |
dB |
Not sent |
|
|
Inter-frequency FDD measurement indicator |
FALSE |
||
|
Inter-frequency TDD measurement indicator |
FALSE |
||
|
Inter-RAT measurement indicators |
Included |
||
|
>RAT type |
GSM |
||
|
Note 1: The UE under test shall not be continuously scheduled to ensure that it operates in DRX when the reselection is being performed. The test equipment shall schedule with a different common H-RNTI when the UE under test is not being scheduled |
|||
Table A.5.4E3: Cell re-selection UTRAN to GSM cell case (cell 2)
|
Parameter |
Unit |
Cell 2 (GSM) |
|
|
T1 |
T2 |
||
|
Absolute RF Channel Number |
ARFCN 1 |
||
|
RXLEV |
dBm |
-90 |
-75 |
|
RXLEV_ACCESS_ |
dBm |
-104 |
|
|
MS_TXPWR_MAX_ |
dBm |
33 |
|
A.5.5.3.2 Test Requirements
The cell re-reselection delay is defined as the time from the beginning of time period T2, to the moment when the UE starts to transmit the random access in Cell 2 (the GSM cell).
The cell re-selection delay shall be less than 2.9 + TRA s.
The rate of correct reselections observed during repeated tests shall be at least 90%.
NOTE: The cell re-selection delay can be expressed
ms
where:
Tidentify,GSM Specified in 8.4.2.5.2.1, here it is 500 ms
Tmeasurement, GSM Specified in 5.5.2.1.4, here it is 480 ms
TBCCH According to [21], the maximum time allowed to read the BCCH data, when being synchronized to a BCCH carrier, is 1.9 s.
TRA The additional delay caused by the random access procedure in the GSM cell. Shall be defined by RAN5 when the test case is further detailed in TS 34.121.
This gives a total of 2.88 +TRA s, allow 2.9 + TRA s.