Method and apparatus for supporting backhaul signaling mechanism for new radio access technology in wireless communication system

1. A method for supporting a backhaul signaling in a wireless communication system, the method comprising:

receiving, by a first transmission and reception point (TRP), a dynamic indication from a second TRP via backhaul signaling; and

handling, by the first TRP, priorities of usage scenarios according to the dynamic indication,

wherein the dynamic indication is received with assist of a macro TRP.

2. The method of claim 1 , wherein the dynamic indication includes at least one of a subframe type, downlink/uplink (DL/UL) configuration, an intended transmission/reception (TX/RX) burst length, a gap length, blank resources, scheduling information for all or specific user equipments (UEs), a numerology used in a resource set, or information on data forwarding.

3. The method of claim 1 , wherein receiving the dynamic indication comprises receiving the dynamic indication by using resources shared between a backhaul link and an access link of the macro TRP.

4. The method of claim 1 , wherein receiving the dynamic indication comprises receiving the dynamic indication which is relayed by the macro TRP.

5. The method of claim 1 , wherein receiving the dynamic indication comprises:

receiving an uplink (UL) grant from the macro TRP; and

receiving the dynamic indication from the second TRP by using resources indicated by the UL grant.

6. The method of claim 1 , wherein receiving the dynamic indication comprises receiving the dynamic indication by using semi-persistent scheduling (SPS) resources configured by the macro TRP.

7. The method of claim 1 , wherein receiving the dynamic indication comprises:

broadcasting an intended resource for backhaul signaling reception; and

receiving the dynamic indication by using the intended resource.

8. The method of claim 7 , wherein the intended resource is configured separately per each TRP or is configured common for all TRPs.

9. The method of claim 7 , wherein a subframe boundary of the first TRP is shifted by one orthogonal frequency division multiplexing (OFDM) symbol from a subframe boundary of the second TRP.

10. The method of claim 9 , wherein a control region of the first TRP does not overlap with a control region of the second TRP.

11. The method of claim 1 , wherein the dynamic indication is received with an analog beamforming.

12. The method of claim 11 , wherein an explicit backhauling signaling portions is multiplexed by time division multiplexing (TDM).

13. A first transmission and reception point (TRP) in a wireless communication system, the first TRP comprising:

a memory; and

a processor, coupled to the memory, that:

receives a dynamic indication from a second TRP via backhaul signaling, and

handles priorities of usage scenarios according to the dynamic indication,

wherein the dynamic indication is received with assist of a macro TRP.