以下假設TDD config,normal HARQ operation。
根據 213 Tab 8-1,UL harq的個數爲,
TDD UL/DL configuration |
Number of HARQ processes for normal HARQ operation |
0 |
7 |
1 |
4 |
2 |
2 |
3 |
3 |
4 |
2 |
5 |
1 |
6 |
6 |
UL Harq Process Number 可以靜態配置(保證re-transmission 與new transmission 用同一個Process Number)。
根據 213 Tab 8-2 & 9.1.2-1,UL TX 相對應的下行 Phich/UL Grant (DCI0),以及下一次ReTx的時間可以計算得到。
TDD UL/DL |
DL subframe number n |
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0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
|
0 |
4 |
6 |
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4 |
6 |
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1 |
|
6 |
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4 |
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6 |
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4 |
2 |
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4 |
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4 |
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3 |
4 |
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4 |
4 |
4 |
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4 |
4 |
5 |
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4 |
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6 |
7 |
7 |
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7 |
7 |
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5 |
TDD UL/DL |
UL subframe index n |
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0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
|
0 |
|
|
4 |
7 |
6 |
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4 |
7 |
6 |
1 |
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4 |
6 |
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4 |
6 |
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2 |
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6 |
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6 |
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3 |
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6 |
6 |
6 |
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4 |
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6 |
6 |
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5 |
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6 |
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6 |
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4 |
6 |
6 |
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4 |
7 |
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TddConfig = 1, 2, 3, 4, 5, 下一次做re-transmission的sf與當前的sf index一致.
TddConfig = 6,
UL Sf |
DL Sf |
Retx Ul Sf |
2 |
6 |
3 |
3 |
9 |
4 |
4 |
0 |
7 |
7 |
1 |
8 |
8 |
5 |
2 |
UL harq Process Number 可以如下靜態配置
Sf2 |
Sf3 |
Sf4 |
Sf7 |
Sf8 |
0 |
1 |
2 |
3 |
4 |
5 |
0 |
1 |
2 |
3 |
4 |
5 |
0 |
1 |
2 |
3 |
4 |
5 |
0 |
1 |
2 |
3 |
4 |
5 |
0 |
1 |
2 |
3 |
4 |
5 |
TddConfig = 0, 兩個UL Sf會在同一個DL Sf進行反饋或者配置
UL Sf |
DL Sf |
Retx Ul Sf |
2 |
6 |
3 |
3 |
0 (Iphich=0, MSB=1) |
4 |
4 |
0(Iphich=1, MSB=0) |
7 |
7 |
1 |
8 |
8 |
5(Iphich=0, MSB=1) |
9 |
9 |
5(Iphich=1, MSB=0) |
2 |
UL harq Process Number 可以如下靜態配置
Sf2 |
Sf3 |
Sf4 |
Sf7 |
Sf8 |
Sf9 |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
0 |
1 |
2 |
3 |
4 |
5 |
6 |