(b) A slot format may be configured in the order of G_UD, D, G_DU, X and U as illustrated in FIG. 34(b). Here, this option includes positioning of G_DU in different periods within a time duration corresponding to the sum of consecutively positioned G_DU and X. That is, G_DU may be positioned in the order of “G_DU and X”, “X and G_DU” or “X, G_DU and X”.
The above-described example with respect to option B will be described below in more detail.
In a situation such as option B, slot boundaries with respect to links (an access link with a UE and a backhaul link with a child node) on which a node performs scheduling can be configured as follows. (Slot boundaries may mean boundaries of multiple slots in the present disclosure).
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- Alt 1. A period from a period in which DL of an access link starts to a period in which DL of another access link starts may be a slot boundary. In this case, G_UD, G_DU, G_AB and/or G_BA periods may be included in a slot.
- Alt 2. A period from a period in which DL of an access link starts to a period in which DL of the next access link starts may be a slot boundary. In this case, G_UD, G_DU, G_AB and/or G_BA periods may be included in a slot.
- Alt 3. A period from a period in which DL of an access link starts to a period in which UL of the access link ends may be a slot boundary. Here, only one access link DL period and one access link UL period can be present in the slot boundary. In this case, G_UD, G_DU, G_AB and/or G_BA periods may be included in a slot.