Method for spatial resource of IAB node for simultaneous operation and apparatus using the method
The present specification provides a method performed by a node for transmitting beam informing information in a wireless communication system, and an apparatus therefor, the method comprising: performing an initial access with a parent node; determining the beam informing information; and transmitting, to the parent node, the beam informing information, wherein the beam informing information includes at least one of transmission (TX) beam information and reception (RX) beam information which is recommended for mobile terminal (MT) operation of the node.
1 . A method, comprising:
transmitting, to a parent node, medium access control (MAC) control element (CE) comprising beam information by an integrated access and backhaul (IAB) node comprising an IAB-mobile terminal (MT) and an IAB-distributed unit (DU); and
receiving, from the parent node, restricted beam information by the IAB node,
wherein the beam information is related to at least one of an IAB-MT's recommended downlink beam and an IAB-MT's recommended uplink beam,
wherein the restricted beam information comprises information for an IAB-DU's restricted beam, and
wherein the restricted beam information further comprises information for IAB-MT's downlink or uplink beams which are related with the IAB-DU's restricted beam.
2 . The method of claim 1 ,
wherein the IAB node supports an IAB-MT operation and an IAB-DU operation.
3 . The method of claim 2 , wherein the IAB-MT operation is an operation related to a communication between the IAB-node and the parent node, and
wherein the IAB-DU operation is an operation related to a communication between the IAB-node and the child node or a communication between the IAB-node and the UE.
4 . The method of claim 3 , wherein the IAB-node receives configuration information for a frequency resource from the parent node,
wherein the configuration information includes hard (H) information, soft(S) information, or not available (NA) information,
wherein the H information is information for a frequency resource on which a transmission or reception is available during the IAB-DU operation,
wherein the S information is information for a frequency resource on which whether to transmit or to receive is not determined during the IAB-DU operation,
wherein the NA information is information for a frequency resource on which a transmission or a reception is not available during the IAB-DU operation.
5 . The method of claim 4 , wherein the IAB-node performs a transmission or a reception without a limitation of a beam resource during the IAB-DU operation, based on a determination that a specific frequency resource is an available resource by the H information or the S information.
6 . An integrated access and backhaul (IAB) node including an IAB-mobile terminal (MT) and an IAB-distributed unit (DU), the IAB node comprising:
at least one transceiver;
at least one memory; and
at least one processor operatively coupled with the at least one memory and the at least one transceiver,
wherein the at least one memory stores instructions that, based on being executed by the at least one processor, cause the at least one processor to perform operations comprising:
transmitting, to a parent node, medium access control (MAC) control element (CE) comprising beam information; and
receiving, from the parent node, restricted beam information,
wherein the beam information is related to at least one of an IAB-MT's recommended downlink beam and an IAB-MT's recommended uplink beam,
wherein the restricted beam information comprises information for an IAB-DU's restricted beam, and
wherein the restricted beam information further comprises information for IAB-MT's downlink or uplink beams which are related with the IAB-DU's restricted beam.
7 . A method, comprising:
receiving, by a parent node, medium access control (MAC) control element (CE) comprising beam information from an integrated access and backhaul (IAB) node including an IAB-mobile terminal (MT) and an IAB-distributed unit (DU); and
transmitting, by the parent node, restricted beam information to the IAB node,
wherein the beam information is related to at least one of an IAB-MT's recommended downlink beam and an IAB-MT's recommended uplink beam,
wherein the restricted beam information comprises information for an IAB-DU's restricted beam, and
wherein the restricted beam information further comprises information for IAB-MT's downlink or uplink beams which are related with the IAB-DU's restricted beam.