EREG: There are 16 EREGs, numbered from 0 to 15, per physical resource block pair. Number all resource elements, except resource elements carrying DM-RS for antenna ports p={107,108,109,110} for normal cyclic prefix (24 个参考信号RE) or p={107,108} for extended cyclic prefix(16 个参考信号RE), in a physical resource-block pair cyclically from 0 to 15 in an increasing order of first frequency, then time. All resource elements with number i in that physical resource-block pair constitutes EREG number i.
每个REG:(12*14-24)/16=9 for normal cp, (12*12-16)/16=8 for extended cp,
11 |
7 |
3 |
15 |
11 |
|
|
3 |
15 |
11 |
7 |
3 |
|
|
10 |
6 |
2 |
14 |
10 |
|
|
2 |
14 |
10 |
6 |
2 |
|
|
9 |
5 |
1 |
13 |
9 |
1 |
7 |
1 |
13 |
9 |
5 |
1 |
9 |
15 |
8 |
4 |
0 |
12 |
8 |
0 |
6 |
0 |
12 |
8 |
4 |
0 |
8 |
14 |
7 |
3 |
15 |
11 |
7 |
15 |
5 |
15 |
11 |
7 |
3 |
15 |
7 |
13 |
6 |
2 |
14 |
10 |
6 |
|
|
14 |
10 |
6 |
2 |
14 |
|
|
5 |
1 |
13 |
9 |
5 |
|
|
13 |
9 |
5 |
1 |
13 |
|
|
4 |
0 |
12 |
8 |
4 |
14 |
4 |
12 |
8 |
4 |
0 |
12 |
6 |
12 |
3 |
15 |
11 |
7 |
3 |
13 |
3 |
11 |
7 |
3 |
15 |
11 |
5 |
11 |
2 |
14 |
10 |
6 |
2 |
12 |
2 |
10 |
6 |
2 |
14 |
10 |
4 |
10 |
1 |
13 |
9 |
5 |
1 |
|
|
9 |
5 |
1 |
13 |
9 |
|
|
0 |
12 |
8 |
4 |
0 |
|
|
8 |
4 |
0 |
12 |
8 |
|
|
Normal CP
11 |
7 |
3 |
15 |
7 |
15 |
11 |
7 |
3 |
15 |
7 |
15 |
10 |
6 |
2 |
14 |
|
|
10 |
6 |
2 |
14 |
|
|
9 |
5 |
1 |
13 |
6 |
14 |
9 |
5 |
1 |
13 |
6 |
14 |
8 |
4 |
0 |
12 |
5 |
13 |
8 |
4 |
0 |
12 |
5 |
13 |
7 |
3 |
15 |
11 |
|
|
7 |
3 |
15 |
11 |
|
|
6 |
2 |
14 |
10 |
4 |
12 |
6 |
2 |
14 |
10 |
4 |
12 |
5 |
1 |
13 |
9 |
3 |
11 |
5 |
1 |
13 |
9 |
3 |
11 |
4 |
0 |
12 |
8 |
|
|
4 |
0 |
12 |
8 |
|
|
3 |
15 |
11 |
7 |
2 |
10 |
3 |
15 |
11 |
7 |
2 |
10 |
2 |
14 |
10 |
6 |
1 |
9 |
2 |
14 |
10 |
6 |
1 |
9 |
1 |
13 |
9 |
5 |
|
|
1 |
13 |
9 |
5 |
|
|
0 |
12 |
8 |
4 |
0 |
8 |
0 |
12 |
8 |
4 |
0 |
8 |
Extended CP
将信号映射到EPDCCH要满足以下条件:36.211 R12 p60 6.8A.5
- RE属于EREG的资源(分配的EPDCCH的RB pair,非DM-RS);
- RE为非CSR位置(cell-specific reference signals);
- RE为非CSI位置(CSI reference signals,有周期性);
- 从指定的起始符号
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