| DCI Format 5A | | |
| Carrier indicator | 3 bits | 载波指示 |
| Lowest index of the subchannel allocation | bits | 子信道分配最小编号 |
| Frequency resource location | 4 bits | 频率资源位置 |
| Time gap between initial transmission and retransmission | 4 bits | 首传和重传的时间间隔 |
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