A.5.5.4 Cell Reselection during an MBMS session, two frequencies present in neighbour list
25.1333GPPRelease 17Requirements for support of radio resource management (FDD)TS
A.5.5.4.1 Test Purpose and Environment
The purpose of this test is to verify the requirement for the cell identification for UEs in an MBMS PTM session and the required functionality on measurement occasions by use of a cell re-selection test case.
The test parameters are given in tables A.5.4F, A.5.4G, A.5.4H, A.5.4I, A.5.4J and A.5.4K. The UE is requested to receive the MBMS service and monitor neighbouring cells on 2 carriers. The maximum repetition period of the relevant system info blocks that needs to be received by the UE to camp on a cell shall be 1280 ms.
Table A.5.4F: General test parameters for Cell Re-selection in CELL_FACH
|
Parameter |
Unit |
Value |
Comment |
|
|
initial condition |
Active cell |
Cell2 |
||
|
final condition |
Active cell |
Cell1 |
||
|
Access Service Class (ASC#0) |
– |
1 |
Selected so that no additional delay is caused by the random access procedure. The value shall be used for all cells in the test. |
|
|
HCS |
Not used |
|||
|
MBMS preferred frequency layer |
Not used |
|||
|
T1 |
s |
15 (initial), |
||
|
T2 |
s |
3 |
||
|
T3 |
s |
3 |
||
The transport and physical parameters of the S-CCPCH carrying the FACH are defined in Table A.5.4G and Table A.5.4H.
Table A.5.4G: Physical channel parameters for S-CCPCH_1 carrying the FACH.
|
Parameter |
Unit |
Level |
|
Channel bit rate |
Kbps |
120 |
|
Channel symbol rate |
Ksps |
60 |
|
Slot Format #I |
– |
8 |
|
TFCI |
– |
ON |
|
Power offsets of TFCI and Pilot fields relative to data field |
dB |
0 |
Table A.5.4H: Void
The transport channel parameters for S-CCPCH_1 carrying FACH are taken from TS34.108 clause 6.1.0b (Content of System Information Block type 5 (FDD)) with M2 condition and with the exception that TTI for FACH carrying BCCH set to 20ms.
The transport and physical parameters of the S-CCPCH carrying the MTCH are defined in Table A.5.4I and Table A.5.4J.
Table A.5.4I: Physical channel parameters for S-CCPCH_2 carrying the MTCH.
|
Parameter |
Unit |
Level |
|
Channel bit rate |
kbps |
960 |
|
Channel symbol rate |
ksps |
480 |
|
Slot Format #I |
– |
14 |
|
TFCI |
– |
ON |
|
Power offsets of TFCI and Pilot fields relative to data field |
dB |
0 |
Table A.5.4J: Transport channel parameters for S-CCPCH_2
|
Parameter |
FACH |
|
Transport Channel Number |
1 |
|
Transport Block Size |
2536 |
|
Transport Block Set Size |
10144 |
|
Transmission Time Interval |
40ms |
|
Type of Error Protection |
Turbo Coding |
|
Coding Rate |
1/3 |
|
Rate Matching attribute |
256 |
|
Size of CRC |
16 |
|
Position of TrCH in radio frame |
Flexible |
Table A.5.4K: Cell specific test parameters for Cell re-selection in CELL_FACH state
|
Parameter |
Unit |
Cell 1 |
Cell 2 |
||||
|
T1 |
T2 |
T3 |
T1 |
T2 |
T3 |
||
|
UTRA RF Channel Number |
Channel 1 |
Channel 2 |
|||||
|
CPICH_Ec/Ior |
dB |
-10 |
-10 |
||||
|
PCCPCH_Ec/Ior |
dB |
-12 |
-12 |
||||
|
SCH_Ec/Ior |
dB |
-12 |
-12 |
||||
|
PICH_Ec/Ior |
dB |
-15 |
-15 |
||||
|
S-CCPCH_1_Ec/Ior |
dB |
-12 |
-12 |
||||
|
S-CCPCH_2_Ec/Ior |
dB |
n.a. |
-6 |
||||
|
OCNS_Ec/Ior |
dB |
Note 1 |
Note 1 |
||||
|
|
dB |
-infinity |
-3.37 |
0 |
0 |
0 |
-5 |
|
|
dBm/3,84 MHz |
-70 |
|||||
|
CPICH_Ec/Io |
dB |
– infinity |
-15 |
-13 |
-13 |
-13 |
-16.2 |
|
Propagation Condition |
AWGN |
||||||
|
Cell_selection_ |
CPICH Ec/N0 |
CPICH Ec/N0 |
|||||
|
Qqualmin |
dB |
-20 |
-20 |
||||
|
Qrxlevmin |
dBm |
-115 |
-115 |
||||
|
UE_TXPWR_ |
dBm |
21 |
21 |
||||
|
Qoffset2s, n |
dB |
C1, C2: 0 |
C2, C1: 0 |
||||
|
Qhyst2 |
dB |
0 |
0 |
||||
|
Treselection |
s |
0 |
0 |
||||
|
Sintrasearch |
dB |
not sent |
not sent |
||||
|
Sintersearch |
dB |
not sent |
not sent |
||||
|
IE "FACH Measurement occasion info" |
Sent |
Sent |
|||||
|
FACH Measurement occasion cycle length coefficient |
2 |
2 |
|||||
|
Inter-frequency FDD measurement indicator |
TRUE |
TRUE |
|||||
|
Inter-frequency TDD measurement indicator |
FALSE |
FALSE |
|||||
|
NOTE 1: The power of the OCNS channel that is added shall make the total power from the cell to be equal to Ior. |
|||||||
A.5.5.4.2 Test Requirements
The cell re-reselection delay is defined as the time from the beginning of time period T3, to the moment when the UE camps on Cell 1, and starts to send preambles on the PRACH for sending the CELL UPDATE message with cause value "cell reselection" in Cell 1.
The cell re-selection delay shall be less than 1.9s.
During T1 and T2 the MTCH SDU ER shall not exceed 4.0%.
The rate of correct cell reselections observed during repeated tests shall be at least 90%.
NOTE: The cell re-selection delay in this case is expressed as:
ms,
where:
TMeasuremnt, inter Specified in 8.4.2.3.2 as 480ms
Tidentify, interi Specified in 8.4.2.3.1 as 2.72 s in this case, thus 3sec for T2 is sufficient for identification of cell 1.
Note: The calculation based on the S-CCPCH carrying the FACH provides a measurement occasion of 20ms repeated every 80ms. As the MTCH TTI length is only 40ms this has to be shortened to a gap of 10ms every 80ms, the re-selection delay is based upon.
TSI: The time required for receiving all the relevant system information data according to the reception procedure and the RRC procedure delay of system information blocks defined in 25.331 for a UTRAN cell.1280 ms is assumed in this test case.
Note: Since 1280 ms is one of the typical values for repeating system information blocks, TSI of 1280 ms could be increased by the RRC procedure delay in order to allow the SIB repetition period of 1280 ms.
TRA: TRA is a delay is caused by the physical random access procedure described in TS 25.214 section 6.1. A persistence value is assumed to be 1 in this test case and therefore TRA in this test case is 40 ms.
Note: The maximum allowed time to be used to perform the measurements for a UE in an MBMS session may be smaller than the duration of the measurement occasion to fulfill the MBMS demodulation performance.
This gives a total of 1.83 s, allow 1,9s in the test case.