The parameters below appear when Configuration Mode is set to PRACH Performance Test (36.141).
Choice: 1.4 MHz (6RB) | 3 MHz (15RB) | 5 MHz (25RB) | 10 MHz (50RB) | 15 MHz (75RB) | 20 MHz (100RB)
Default: 10 MHz (50RB)
Double-click or use the drop-down menu to set the system bandwidth and number of Resource Blocks (RB).
Choice: RA Configuration | PRACH Test Preambles (36.141)
Default: RA Configuration
Double-click or use the drop-down menu to set Auto-configuration.
Where Auto-configuration = RA configuration, the value of Waveform Generation Length is automatically set by the software based on PRACH Configuration Index parameter.
Where Auto-configuration = PRACH Test Preamble (36.141), the wizard configures PRACH Test Preambles based on 3GPP TS 36.141 and without Cyclic Shift v. In this case, you must set the Preamble Index to satisfy Cyclic Shift v as defined in 36.141 on setting the PRACH Test Preambles (refer to tables below).
Example: Auto-configuration = PRACH Test Preamble (36.141),Cyclic Shift Set = Normal Mode, and Burst (Preamble) Format = 0, so Preamble Index should be set to 32 to satisfy Cyclic Shift v = 32 (refer to 34.141 and tables below).
Test Preambles for Normal Mode
|
Burst Format |
|||
|---|---|---|---|
|
0 |
13 |
22 |
32 |
|
1 |
167 |
22 |
2 |
|
2 |
167 |
22 |
0 |
|
3 |
0 |
22 |
0 |
|
4 |
10 |
0 |
0 |
Test Preambles for High Speed Mode
|
Burst Format |
|||
|---|---|---|---|
|
0 |
15 |
384 |
0 |
|
1 |
202 |
384 |
0 |
|
2 |
202 |
384 |
0 |
|
3 |
237 |
384 |
0 |
Displays the waveform generation length which is determined by PRACH Configuration Index, Configuration Mode and MTC Settings.
Displays UE Type.
This parameter can be set in the PRACH Wizard.
(See 3GPP TS 36.211 for more information.)
Displays PRACH Hopping Configuration.
This parameter can be set in the PRACH Wizard.
(See 3GPP TS 36.211 and 36.331 for more information.)
Displays PRACH Hopping Offset.
This parameter can be set in the PRACH Wizard.
(See 3GPP TS 36.211 and 36.331 for more information.)
Displays Number of Repetition per Preamble Attempt.
This parameter can be set in the PRACH Wizard.
(See 3GPP TS 36.211 and 36.331 for more information.)
Displays PRACH Starting Subframe.
This parameter can be set in the PRACH Wizard.
(See 3GPP TS 36.211 and 36.331 for more information.)
Range: 0 to maximum number of RB in the System Bandwidth - 6.
Default: 0
Enter the number of resource blocks by which to offset the PRACH preamble.
When the UE Type is set to BL/CE, Resource Block Offset and PRACH Preamble are limited on the narrow bands for each system bandwidth.
See 3GPP TS 36.211 and 36.331 for more information.
|
System Bandwidth |
Resource Block Offset Range |
Resource Block Offset Default Value |
|---|---|---|
|
1.4 MHz |
0 |
0 |
|
3 MHz |
0 to 9 |
0 |
|
5 MHz |
0 to 19 |
0 |
|
10 MHz |
0 to 44 |
0 |
|
15 MHz |
0 to 69 |
0 |
|
20 MHz |
0 to 94 |
0 |
Displays the Preamble Format of the selected PRACH burst based on the PRACH Configuration Index, as shown in the table below for that parameter.
|
Preamble Format |
PRACH Cyclic Prefix Length (Tcp) |
PRACH Sequence Length (Tseq) |
PRACH Length (Tcp + Tseq) |
|---|---|---|---|
|
0 |
3168 x Ts = 0.103125 ms |
24576 x Ts = 0.8 ms |
0.903.125 ms |
|
1 |
21024 x Ts = 0.684375 ms |
24576 x Ts = 0.8 ms |
1.484375 ms |
|
2 |
6240 x Ts = 0.203125 ms |
2 x 24576 x Ts = 1.6 ms |
1.803125 ms |
|
3 |
21024 x Ts = 0.684375 ms |
2 x 24576 x Ts = 1.6 ms |
2.284375 ms |
Range: 0 to 63
Default: 14
Enter a value for the PRACH Configuration Index. The software configures the PRACH bursts according to the following table when you click OK.
Index numbers 30, 46, 60, 61, and 62 are not assigned, and are not available for input.
|
PRACH Configuration index |
Preamble Format |
System Frame Number |
Subframe Number |
|---|---|---|---|
|
0 |
0 |
Even |
1 |
|
1 |
0 |
Even |
4 |
|
2 |
0 |
Even |
7 |
|
3 |
0 |
Any |
1 |
|
4 |
0 |
Any |
4 |
|
5 |
0 |
Any |
7 |
|
6 |
0 |
Any |
1, 6 |
|
7 |
0 |
Any |
2, 7 |
|
8 |
0 |
Any |
3, 8 |
|
9 |
0 |
Any |
1, 4, 7 |
|
10 |
0 |
Any |
2, 5, 8 |
|
11 |
0 |
Any |
3, 6, 9 |
|
12 |
0 |
Any |
0, 2, 4, 6, 8 |
|
13 |
0 |
Any |
1, 3, 5, 7, 9 |
|
14 |
0 |
Any |
0, 1, 2, 3, 4, 5, 6, 7, 8, 9 |
|
15 |
0 |
Even |
9 |
|
16 |
1 |
Even |
1 |
|
17 |
1 |
Even |
4 |
|
18 |
1 |
Even |
7 |
|
19 |
1 |
Any |
1 |
|
20 |
1 |
Any |
4 |
|
21 |
1 |
Any |
7 |
|
22 |
1 |
Any |
1, 6 |
|
23 |
1 |
Any |
2, 7 |
|
24 |
1 |
Any |
3, 8 |
|
25 |
1 |
Any |
1, 4, 7 |
|
26 |
1 |
Any |
2, 5, 8 |
|
27 |
1 |
Any |
3, 6, 9 |
|
28 |
1 |
Any |
0, 2, 4, 6, 8 |
|
29 |
1 |
Any |
1, 3, 5, 7. 9 |
|
30 |
N/A |
N/A |
N/A |
|
31 |
1 |
Even |
9 |
|
32 |
2 |
Even |
1 |
|
33 |
2 |
Even |
4 |
|
34 |
2 |
Even |
7 |
|
35 |
2 |
Any |
1 |
|
36 |
2 |
Any |
4 |
|
37 |
2 |
Any |
7 |
|
38 |
2 |
Any |
1, 6 |
|
39 |
2 |
Any |
2, 7 |
|
40 |
2 |
Any |
3, 8 |
|
41 |
2 |
Any |
1, 4, 7 |
|
42 |
2 |
Any |
2, 5, 8 |
|
43 |
2 |
Any |
3, 6, 9 |
|
44 |
2 |
Any |
0, 2, 4, 6, 8 |
|
45 |
2 |
Any |
1, 3, 5, 7. 9 |
|
46 |
N/A |
N/A |
N/A |
|
47 |
2 |
Even |
9 |
|
48 |
3 |
Even |
1 |
|
49 |
3 |
Even |
4 |
|
50 |
3 |
Even |
7 |
|
51 |
3 |
Any |
1 |
|
52 |
3 |
Any |
4 |
|
53 |
3 |
Any |
7 |
|
54 |
3 |
Any |
1, 6 |
|
55 |
3 |
Any |
2, 7 |
|
56 |
3 |
Any |
3, 8 |
|
57 |
3 |
Any |
1, 4, 7 |
|
58 |
3 |
Any |
2, 5, 8 |
|
59 |
3 |
Any |
3, 6, 9 |
|
60 |
N/A |
N/A |
N/A |
|
61 |
N/A |
N/A |
N/A |
|
62 |
N/A |
N/A |
N/A |
|
63 |
3 |
Even |
9 |
Range: 0 to 837 for Formats 0 to 3
Default: 0
Enter a value for the logical root sequence index. The Logical Root Sequence Index is the value of RACH_ROOT_SEQUENCE which is the logical index for the Zadoff-Chu sequence used for PRACH preamble generation. There is a relationship between Logical Root Sequence Index and Physical Root Sequence Index given by Root Zadoff-Chu sequence order table and preamble format. (See 3GPP TS 36.211.)
In the case where preambles corresponding to Preamble Index cannot be generated from a single root Zadoff-Chu sequence, Logical Root Sequence Index is incremented until corresponding Preamble sequences are found.
That incremented Logical Root Sequence Index is displayed in the Logical Root Sequence Index (Incremented) field.
Physical Root Sequence Index, Cyclic Shift v and Incremented Logical Root Sequence Index are automatically changed on GUI based on Cyclic Shift Set, Ncs Configuration, Logical Root Sequence Index and Preamble Index.
Range: 0 to 837 for Formats 0 to 3
Default: 0
Displays a value for the incremented logical root sequence index. (See 3GPP TS 36.211.)
.
In the case where preambles corresponding to Preamble Index cannot be generated from a single root Zadoff-Chu sequence, Logical Root Sequence Index is incremented until corresponding Preamble sequences are found.
That incremented Logical Root Sequence Index is displayed in the Logical Root Sequence Index (Incremented) field.
Physical Root Sequence Index, Cyclic Shift v and Incremented Logical Root Sequence Index are automatically changed on GUI based on Cyclic Shift Set, Ncs Configuration, Logical Root Sequence Index and Preamble Index.
Choice: Unrestricted Sets | Restricted Sets
Default: Unrestricted Sets
Double-click or use the drop-down menu to set the cyclic shift restriction method. Ncs value is determined by Ncs configuration, Cyclic Shift Set and Preamble format. (See 3GPP TS 36.211.)
In the case where preambles corresponding to Preamble Index cannot be generated from a single root Zadoff-Chu sequence, Logical Root Sequence Index is incremented until corresponding Preamble sequences are found.
That incremented Logical Root Sequence Index is displayed in the Logical Root Sequence Index (Incremented) field.
Physical Root Sequence Index, Cyclic Shift v and Incremented Logical Root Sequence Index are automatically changed on GUI based on Cyclic Shift Set, Ncs Configuration, Logical Root Sequence Index and Preamble Index.
|
Ncs Configuration |
Unrestricted Set Value |
Restricted Set Value |
|---|---|---|
|
0 |
0 |
15 |
|
1 |
13 |
18 |
|
2 |
15 |
22 |
|
3 |
18 |
26 |
|
4 |
22 |
32 |
|
5 |
26 |
38 |
|
6 |
32 |
46 |
|
7 |
38 |
55 |
|
8 |
46 |
68 |
|
9 |
59 |
82 |
|
10 |
76 |
100 |
|
11 |
93 |
128 |
|
12 |
119 |
158 |
|
13 |
167 |
202 |
|
14 |
279 |
237 |
|
15 |
419 |
- |
Range:
0 to 15 (Unrestricted) for Formats 0 to 3
0 to 14 (Restricted) for Formats 0 to 3
Default: 0
Enter a value for the Ncs configuration, when Configuration Mode is PRACH Configuration. Otherwise it's read only. Ncs value is determined by Ncs configuration, Cyclic Shift Set and Preamble format. (See 3GPP TS 36.211 and 26.141 for more information.)
In the case where preambles corresponding to Preamble Index cannot be generated from a single root Zadoff-Chu sequence, Logical Root Sequence Index is incremented until corresponding Preamble sequences are found.
That incremented Logical Root Sequence Index is displayed in the Logical Root Sequence Index (Incremented) field.
Physical Root Sequence Index, Cyclic Shift v and Incremented Logical Root Sequence Index are automatically changed on GUI based on Cyclic Shift Set, Ncs Configuration, Logical Root Sequence Index and Preamble Index.
Displays the Cyclic Shift value (Ncs value) which is determined by Ncs configuration, Cyclic Shift Set and Preamble format. (See 3GPP TS 36.211 and 26.141 for more information.)
In the case where preambles corresponding to Preamble Index cannot be generated from a single root Zadoff-Chu sequence, Logical Root Sequence Index is incremented until corresponding Preamble sequences are found.
That incremented Logical Root Sequence Index is displayed in the Logical Root Sequence Index (Incremented) field.
Physical Root Sequence Index, Cyclic Shift v and Incremented Logical Root Sequence Index are automatically changed on GUI based on Cyclic Shift Set, Ncs Configuration, Logical Root Sequence Index and Preamble Index.
Range: 0 to 63
Default: 0
Enter a value for the preamble index. The Preamble Index is one of the 64 possible preambles in the cell used for preamble generation. (See 3GPP TS 36.211.)
When the Auto-configuration parameter is set to PRACH Test Preamble (36.141),you must set the Preamble Index to satisfy Cyclic Shift v as defined in 3GPP 36.141 (PRACH Test Preambles test).
Example: Auto-configuration = PRACH Test Preamble (3GPP TS 36.141),Cyclic Shift Set = Normal Mode, and Preamble Format = 0, so Preamble Index should be set to 32 to satisfy Cyclic Shift v = 32 (refer to 34.141 A.6).
| Test preambles for Normal Mode | |||
| Burst Format | Ncs value | Logical Root Sequence Index | Cycle Shift v |
| 0 | 13 | 22 | 32 |
| 1 | 167 | 22 | 2 |
| 2 | 167 | 22 | 0 |
| 3 | 0 | 22 | 0 |
| 4 | 10 | 0 | 0 |
| Test preambles for High Speed Mode | |||
| Burst Format | Ncs value | Logical Root Sequence Index | Cycle Shift v |
| 0 | 15 | 384 | 0 |
| 1 | 202 | 384 | 0 |
| 2 | 202 | 384 | 0 |
| 3 | 237 | 384 | 0 |
In the case where preambles corresponding to Preamble Index cannot be generated from a single root Zadoff-Chu sequence, Logical Root Sequence Index is incremented until corresponding Preamble sequences are found.
That incremented Logical Root Sequence Index is displayed in the Logical Root Sequence Index (Incremented) field.
Physical Root Sequence Index, Cyclic Shift v and Incremented Logical Root Sequence Index are automatically changed on GUI based on Cyclic Shift Set, Ncs Configuration, Logical Root Sequence Index and Preamble Index.
Displays the physical root sequence index. There is a relationship between Logical Root Sequence Index and Physical Root Sequence Index given by Root Zadoff-Chu sequence order table and preamble format. (See 3GPP TS 36.211.)
In the case where preambles corresponding to Preamble Index cannot be generated from a single root Zadoff-Chu sequence, Logical Root Sequence Index is incremented until corresponding Preamble sequences are found.
That incremented Logical Root Sequence Index is displayed in the Logical Root Sequence Index (Incremented) field.
Physical Root Sequence Index, Cyclic Shift v and Incremented Logical Root Sequence Index are automatically changed on GUI based on Cyclic Shift Set, Ncs Configuration, Logical Root Sequence Index and Preamble Index.
Displays the cyclic shift v which is used for cyclic shift calculation of preamble generation. (See 3GPP TS 36.211.)
| Test preambles for Normal Mode | |||
| Burst Format | Ncs value | Logical Root Sequence Index | Cycle Shift v |
| 0 | 13 | 22 | 32 |
| 1 | 167 | 22 | 2 |
| 2 | 167 | 22 | 0 |
| 3 | 0 | 22 | 0 |
| 4 | 10 | 0 | 0 |
| Test preambles for High Speed Mode | |||
| Burst Format | Ncs value | Logical Root Sequence Index | Cycle Shift v |
| 0 | 15 | 384 | 0 |
| 1 | 202 | 384 | 0 |
| 2 | 202 | 384 | 0 |
| 3 | 237 | 384 | 0 |
In the case where preambles corresponding to Preamble Index cannot be generated from a single root Zadoff-Chu sequence, Logical Root Sequence Index is incremented until corresponding Preamble sequences are found.
That incremented Logical Root Sequence Index is displayed in the Logical Root Sequence Index (Incremented) field.
Physical Root Sequence Index, Cyclic Shift v and Incremented Logical Root Sequence Index are automatically changed on GUI based on Cyclic Shift Set, Ncs Configuration, Logical Root Sequence Index and Preamble Index.
Choice: On | Off
Default: On
Double-click or use the drop-down menu to turn the Increase Time Offset on or off.
When the Increase Time Offset is turned on, the Preamble Time Offset in each preamble is increased by adding in each step a value of 0.1 (us).
This parameter is visible when the Auto-configuration is set to PRACH Test Preamble (36.141). Otherwise it’s hidden.
When this parameter is off or the Auto-configuration is set to RA Configuration, the Preamble Time Offset in each preamble is set to zero.
(See 3GPP TS 36.141.)
Choice: On | Off
Default: On
Double-click or use the drop-down menu to turn the Time Offset Base State on or off, when the Configuration Mode is PRACH Test Preambles (36.141). Otherwise it's hidden.
The Timing Offset in the component carrier node is set to the Time Offset Base Value, when the Time Offset Base State is on. Otherwise it's not set.
Choice: On | Off
Default: On
Displays the Time Offset Base Value when the Configuration Mode is PRACH Test Preambles (36.141). Otherwise it's hidden.
The Timing Offset in the carrier node is set to the Time Offset Base Value, when the Time Offset Base State is on. Otherwise it's not set.
The Time Offset Base Value depends on the Preamble Format and Cyclic Shift Set (High-speed flag).
(See 3GPP TS 36.211 and 36.141 for more information.)