to access a drop-down list
that enables you to set parameters for all PRACH bursts to the same value.Use the Channel Setup node to configure PRACH bursts. Click the button to access a drop-down list
that enables you to set parameters for all PRACH bursts to the same value.
|
PRACH Burst n |
|---|
Displays the identifying number of the selected PRACH burst.
When you click the Add New PRACH Burst button 
,
the software adds a new PRACH burst above the currently selected PRACH
burst in the list. The software assigns an identifying number to the new
PRACH burst that corresponds to its position in the list and increments
the identifying numbers of subsequent PRACH bursts in the list. Similarly,
if you delete the selected PRACH burst using the Delete PRACH Burst(s)
button 
, the software adjusts the identifying numbers of the subsequent
PRACH bursts according to their new positions in the list.
Choice: Off | On
Default: On
Double-click or use the drop-down menu to turn the selected PRACH burst on or off.
Range: -60.0 dB to 20 dB
Default: 0.000 dB
Enter a power level in dB for the selected PRACH burst, relative to the carrier power.
Range: Determined by the Waveform Generation Length selected in the PRACH Carrier node.
Enter a frame number for the selected PRACH burst. The PRACH burst location displayed in the Resource Mapping Graph at the bottom of the Channel Setup node is determined by the frame number and subframe number defined for the selected burst.
Range: Determined by the Waveform Generation Length selected in the PRACH Carrier node.
Enter a subframe number for the selected PRACH burst. The PRACH burst location displayed in the Resource Mapping Graph at the bottom of the Channel Setup node is determined by the frame number and subframe number defined for the selected burst.
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.
Parameter is set in the PRACH Wizard.
Range: 0 to 3
Default: 0
Enter a value for the PRACH preamble format for the selected burst. The following table shows the cyclic prefix length, PRACH sequence length and total length for each PRACH preamble format.
|
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 837
Default: 0
Enter a value for the Logical Root Sequence Index.
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.
In the table below, the first Logical root sequence number in the range matches the first Physical root sequence number, the second matches the second, and so on. For example, logical root number 0 = physical root number 129, logical root number 1 = physical root number 710. (See 3GPP TS 36.211.)
|
Logical root sequence number |
Physical root sequence number ยต (in increasing order of the corresponding logical sequence number) |
|---|---|
|
0 to 23 |
129, 710, 140, 699, 120, 719, 210, 629, 168, 671, 84, 755, 105, 734, 93, 746, 70, 769, 60, 779, 2, 837, 1, 838 |
|
24 to 29 |
56, 783, 112, 727, 148, 691 |
|
30 to 35 |
80, 759, 42, 797, 40, 799 |
|
36 to 41 |
35, 804, 73, 766, 146, 693 |
|
42 to 51 |
31, 808, 28, 811, 30, 809, 27, 812, 29, 810 |
|
52 to 63 |
24, 815, 48, 791, 68, 771, 74, 765, 178, 661, 136, 703 |
|
64 to 75 |
86, 753, 78, 761, 43, 796, 39, 800, 20, 819, 21, 818 |
|
76 to 89 |
95, 744, 202, 637, 190, 649, 181, 658, 137, 702, 125, 714, 151, 688 |
|
90 to 115 |
217, 622, 128, 711, 142, 697, 122, 717, 203, 636, 118, 721, 110, 729, 89, 750, 103, 736, 61, 778, 55, 784, 15, 824, 14, 825 |
|
116 to 135 |
12, 827, 23, 816, 34, 805, 37, 802, 46, 793, 207, 632, 179, 660, 145, 694, 130, 709, 223, 616 |
|
136 to 167 |
228, 611, 227, 612, 132, 707, 133, 706, 143, 696, 135, 704, 161, 678, 201, 638, 173, 666, 106, 733, 83, 756, 91, 748, 66, 773, 53, 786, 10, 829, 9, 830 |
|
168 to 203 |
7, 832, 8, 831, 16, 823, 47, 792, 64, 775, 57, 782, 104, 735, 101, 738, 108, 731, 208, 631, 184, 655, 197, 642, 191, 648, 121, 718, 141, 698, 149, 690, 216, 623, 218, 621 |
|
204 to 263 |
152, 687, 144, 695, 134, 705, 138, 701, 199, 640, 162, 677, 176, 663, 119, 720, 158, 681, 164, 675, 174, 665, 171, 668, 170, 669, 87, 752, 169, 670, 88, 751, 107, 732, 81, 758, 82, 757, 100, 739, 98, 741, 71, 768, 59, 780, 65, 774, 50, 789, 49, 790, 26, 813, 17, 822, 13, 826, 6, 833 |
|
264 to 327 |
5, 834, 33, 806, 51, 788, 75, 764, 99, 740, 96, 743, 97, 742, 166, 673, 172, 667, 175, 664, 187, 652, 163, 676, 185, 654, 200, 639, 114, 725, 189, 650, 115, 724, 194, 645, 195, 644, 192, 647, 182, 657, 157, 682, 156, 683, 211, 628, 154, 685, 123, 716, 139, 700, 212, 627, 153, 686, 213, 626, 215, 624, 150, 689 |
|
328 to 383 |
225, 614, 224, 615, 221, 618, 220, 619, 127, 712, 147, 692, 124, 715, 193, 646, 205, 634, 206, 633, 116, 723, 160, 679, 186, 653, 167, 672, 79, 760, 85, 754, 77, 762, 92, 747, 58, 781, 62, 777, 69, 770, 54, 785, 36, 803, 32, 807, 25, 814, 18, 821, 11, 828, 4, 835 |
|
384 to 455 |
3, 836, 19, 820, 22, 817, 41, 798, 38, 801, 44, 795, 52, 787, 45, 794, 63, 776, 67, 772, 72, 767, 76, 763, 94, 745, 102, 737, 90, 749, 109, 730, 165, 674, 111, 728, 209, 630, 204, 635, 117, 722, 188, 651, 159, 680, 198, 641, 113, 726, 183, 656, 180, 659, 177, 662, 196, 643, 155, 684, 214, 625, 126, 713, 131, 708, 219, 620, 222, 617, 226, 613 |
|
456 to 513 |
230, 609, 232, 607, 262, 577, 252, 587, 418, 421, 416, 423, 413, 426, 411, 428, 376, 463, 395, 444, 283, 556, 285, 554, 379, 460, 390, 449, 363, 476, 384, 455, 388, 451, 386, 453, 361, 478, 387, 452, 360, 479, 310, 529, 354, 485, 328, 511, 315, 524, 337, 502, 349, 490, 335, 504, 324, 515 |
|
514 to 561 |
323, 516, 320, 519, 334, 505, 359, 480, 295, 544, 385, 454, 292, 547, 291, 548, 381, 458, 399, 440, 380, 459, 397, 442, 369, 470, 377, 462, 410, 429, 407, 432, 281, 558, 414, 425, 247, 592, 277, 562, 271, 568, 272, 567, 264, 575, 259, 580 |
|
562 to 629 |
237, 602, 239, 600, 244, 595, 243, 596, 275, 564, 278, 561, 250, 589, 246, 593, 417, 422, 248, 591, 394, 445, 393, 446, 370, 469, 365, 474, 300, 539, 299, 540, 364, 475, 362, 477, 298, 541, 312, 527, 313, 526, 314, 525, 353, 486, 352, 487, 343, 496, 327, 512, 350, 489, 326, 513, 319, 520, 332, 507, 333, 506, 348, 491, 347, 492, 322, 517 |
|
630 to 659 |
330, 509, 338, 501, 341, 498, 340, 499, 342, 497, 301, 538, 366, 473, 401, 438, 371, 468, 408, 431, 375, 464, 249, 590, 269, 570, 238, 601, 234, 605 |
|
660 to 707 |
257, 582, 273, 566, 255, 584, 254, 585, 245, 594, 251, 588, 412, 427, 372, 467, 282, 557, 403, 436, 396, 443, 392, 447, 391, 448, 382, 457, 389, 450, 294, 545, 297, 542, 311, 528, 344, 495, 345, 494, 318, 521, 331, 508, 325, 514, 321, 518 |
|
708 to 729 |
346, 493, 339, 500, 351, 488, 306, 533, 289, 550, 400, 439, 378, 461, 374, 465, 415, 424, 270, 569, 241, 598 |
|
730 to 751 |
231, 608, 260, 579, 268, 571, 276, 563, 409, 430, 398, 441, 290, 549, 304, 535, 308, 531, 358, 481, 316, 523 |
|
752 to 765 |
293, 546, 288, 551, 284, 555, 368, 471, 253, 586, 256, 583, 263, 576 |
|
766 to 777 |
242, 597, 274, 565, 402, 437, 383, 456, 357, 482, 329, 510 |
|
778 to 789 |
317, 522, 307, 532, 286, 553, 287, 552, 266, 573, 261, 578 |
|
790 to 795 |
236, 603, 303, 536, 356, 483 |
|
796 to 803 |
355, 484, 405, 434, 404, 435, 406, 433 |
|
804 to 809 |
235, 604, 267, 572, 302, 537 |
|
810 to 815 |
309, 530, 265, 574, 233, 606 |
|
816 to 819 |
367, 472, 296, 543 |
|
820 to 837 |
336, 503, 305, 534, 373, 466, 280, 559, 279, 560, 419, 420, 240, 599, 258, 581, 229, 610 |
Range: 0 to 837 for Format 0 to 3
Default: 0
Displays a value for the incremented logical root sequence index. Refer to 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. (See 3GPP TS 36.211.)
The Unrestricted Set and Restricted Set value for each Cyclic shifts configuration is shown in the following table:
|
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
Default: 0
Enter a value for the Ncs configuration for preamble generation. (See 3GPP TS 36.211.) The corresponding Unrestricted Sets values and Restricted Sets values are shown in the table for Cyclic Shift Set.
The software sets this value based on the Ncs Configuration setting as shown in the table below:
|
NCS configuration |
NCS value |
|
|---|---|---|
|
Unrestricted set |
Restricted set |
|
|
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 63
Default: 0
Enter a value of Preamble Index (ID) for PRACH preamble generation.
Example: Auto-configuration = PRACH Test Preamble (3GPP TS 36.141 A.6),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 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 Sequence Index | Cycle Shift v |
| 0 | 15 | 384 | 0 |
| 1 | 202 | 384 | 0 |
| 2 | 202 | 384 | 0 |
| 3 | 237 | 384 | 0 |
Refer to Preamble Index in TS36.212 5.3.3.1.3, TS36.321 5.1, and TS36.331 6.3.2.
This parameter is read only and the value is automatically set by the software based on the Logical Root Sequence Index and Preamble Index.
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.
This parameter is read only and the value is automatically set by the software based on the Logical Root Sequence Index, Preamble Index, Ncs Configuration, and Cyclic Shift Set parameter values.
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.
| Test preambles for Normal Mode | |||
| Burst Format | Ncs value | Logical 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 Sequence Index | Cycle Shift v |
| 0 | 15 | 384 | 0 |
| 1 | 202 | 384 | 0 |
| 2 | 202 | 384 | 0 |
| 3 | 237 | 384 | 0 |
Refer to Preamble Index-related information in TS36.212 5.3.3.1.3, TS36.321 5.1, and TS36.331 6.3.2.
Choice: 0.0 us | 0.1 us | 0.2 us | 0.3 us | 0.4 us | 0.5 us | 0.6 us | 0.7 us | 0.8 us | 0.9 us
Default: 0.0 us
Double-click or use the drop-down menu to set the preamble time offset in microseconds (us) for the selected burst.