问题:为什么prach信道在每个子帧上最多只能配置1个
我要回答
问题答案
这个我觉得没有为什么,协议就是这么规定的,其中密度最大的是FDD prach配置索引为14的,每个帧上都有一个
PRACH Configuration Index | Preamble | System frame number | Subframe number | PRACH Configuration Index | Preamble | System frame number | Subframe number |
0 | 0 | Even | 1 | 32 | 2 | Even | 1 |
1 | 0 | Even | 4 | 33 | 2 | Even | 4 |
2 | 0 | Even | 7 | 34 | 2 | Even | 7 |
3 | 0 | Any | 1 | 35 | 2 | Any | 1 |
4 | 0 | Any | 4 | 36 | 2 | Any | 4 |
5 | 0 | Any | 7 | 37 | 2 | Any | 7 |
6 | 0 | Any | 1, 6 | 38 | 2 | Any | 1, 6 |
7 | 0 | Any | 2 ,7 | 39 | 2 | Any | 2 ,7 |
8 | 0 | Any | 3, 8 | 40 | 2 | Any | 3, 8 |
9 | 0 | Any | 1, 4, 7 | 41 | 2 | Any | 1, 4, 7 |
10 | 0 | Any | 2, 5, 8 | 42 | 2 | Any | 2, 5, 8 |
11 | 0 | Any | 3, 6, 9 | 43 | 2 | Any | 3, 6, 9 |
12 | 0 | Any | 0, 2, 4, 6, 8 | 44 | 2 | Any | 0, 2, 4, 6, 8 |
13 | 0 | Any | 1, 3, 5, 7, 9 | 45 | 2 | Any | 1, 3, 5, 7, 9 |
14 | 0 | Any | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 | 46 | N/A | N/A | N/A |
15 | 0 | Even | 9 | 47 | 2 | Even | 9 |
16 | 1 | Even | 1 | 48 | 3 | Even | 1 |
17 | 1 | Even | 4 | 49 | 3 | Even | 4 |
18 | 1 | Even | 7 | 50 | 3 | Even | 7 |
19 | 1 | Any | 1 | 51 | 3 | Any | 1 |
20 | 1 | Any | 4 | 52 | 3 | Any | 4 |
21 | 1 | Any | 7 | 53 | 3 | Any | 7 |
22 | 1 | Any | 1, 6 | 54 | 3 | Any | 1, 6 |
23 | 1 | Any | 2 ,7 | 55 | 3 | Any | 2 ,7 |
24 | 1 | Any | 3, 8 | 56 | 3 | Any | 3, 8 |
25 | 1 | Any | 1, 4, 7 | 57 | 3 | Any | 1, 4, 7 |
26 | 1 | Any | 2, 5, 8 | 58 | 3 | Any | 2, 5, 8 |
27 | 1 | Any | 3, 6, 9 | 59 | 3 | Any | 3, 6, 9 |
28 | 1 | Any | 0, 2, 4, 6, 8 | 60 | N/A | N/A | N/A |
29 | 1 | Any | 1, 3, 5, 7, 9 | 61 | N/A | N/A | N/A |
30 | N/A | N/A | N/A | 62 | N/A | N/A | N/A |
31 | 1 | Even | 9 | 63 | 3 | Even | 9 |


