Integrated access and backhaul node configuration
Apparatuses, methods, and systems are disclosed for an integrated access and backhaul node configuration. One method includes receiving, at an integrated access and backhaul (IAB) node including an IAB mobile terminal (IAB-MT) and an IAB distributed unit (IAB-DU), a first configuration of a reference signal associated with the IAB-DU. The method includes receiving a second configuration of a resource associated with the IAB-DU. The second configuration indicates that the resource is soft. The method includes receiving a control message from a parent node. The control message includes an index to the reference signal. The method includes receiving an availability indication from the parent node. The availability indication indicates whether the resource is available. The method includes determining whether to perform a first operation by the IAB-MT and a second operation by the IAB-DU simultaneously.
1 . An apparatus for performing a network function, the apparatus comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the apparatus to:
receive a first configuration of a reference signal associated with an integrated access and backhaul (IAB) distributed unit (IAB-DU);
receive a second configuration of a resource associated with the IAB-DU, wherein the second configuration indicates that the resource is soft;
receive a control message from a parent node, wherein the control message comprises an index to the reference signal; and
receive an availability indication from the parent node, wherein the availability indication indicates whether the resource is available; and
determine whether to transmit on the resource based in part on determining that:
an IAB mobile terminal (IAB-MT) performs a simultaneous operation while applying a spatial filter associated with the reference signal, a transmission configuration indication (TCI) comprising an identifier of the reference signal, or a combination thereof; and
the availability indication indicates that the resource is available.
2 . The apparatus of claim 1 , wherein the at least one processor is configured to cause the apparatus to determine whether to transmit on the resource is further based on the processor determining that the transmission is associated with a configured multiplexing method.
3 . The apparatus of claim 1 , wherein the first configuration comprises a channel state information reference signal (CSI-RS) configuration or a sounding reference signal (SRS).
4 . The apparatus of claim 1 , wherein the resource comprises at least one symbol or at least one group of resource blocks (RBs).
5 . The apparatus of claim 1 , wherein the control message comprises a medium access control (MAC) message.
6 . The apparatus of claim 5 , wherein the MAC message is a beam restriction message.
7 . A method of performing a network function, the method comprising:
receiving a first configuration of a reference signal associated with an integrated access and backhaul (IAB) distributed unit (IAB-DU);
receiving a second configuration of a resource associated with the IAB-DU, wherein the second configuration indicates that the resource is soft;
receiving a control message from a parent node, wherein the control message comprises an index to the reference signal; and
receiving an availability indication from the parent node, wherein the availability indication indicates whether the resource is available; and
determining whether to transmit on the resource based in part on determining that:
an IAB mobile terminal (IAB-MT) performs a simultaneous operation while applying a spatial filter associated with the reference signal, a transmission configuration indication (TCI) comprising an identifier of the reference signal, or a combination thereof; and
the availability indication indicates that the resource is available.
8 . The method of claim 7 , wherein determining whether to transmit on the resource is further based on determining that the transmission is associated with a configured multiplexing method.
9 . An apparatus for performing a network function, the apparatus comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the apparatus to:
receive a first configuration of a reference signal associated with an integrated access and backhaul (IAB) distributed unit (IAB-DU);
receive a second configuration of a resource associated with the IAB-DU, wherein the second configuration indicates that the resource is soft;
receive a control message from a parent node, wherein the control message comprises an index to the reference signal; and
receive an availability indication from the parent node, wherein the availability indication indicates whether the resource is available; and
determine whether to perform a first operation by an IAB mobile terminal (IAB-MT) and a second operation by the IAB-DU simultaneously based in part on determining that:
the second operation uses the reference signal as a source of a spatial quasi-collocation (QCL); and
the availability indication indicates that the resource is available.
10 . The apparatus of claim 9 , wherein the first configuration comprises a channel state information reference signal (CSI-RS) configuration or a transmission configuration indication (TCI) configuration.
11 . The apparatus of claim 9 , wherein the resource comprises at least one symbol or at least one group of resource blocks (RBs).
12 . The apparatus of claim 9 , wherein the control message comprises a medium access control (MAC) message.
13 . The apparatus of claim 12 , wherein the MAC message is a beam restriction message.
14 . The apparatus of claim 9 , wherein the spatial QCL comprises a QCL Type D.
15 . The apparatus of claim 9 , wherein:
the first operation is a first transmission or a first reception; and
the second operation is a second transmission or a second reception.
16 . A method of performing a network function, the method comprising:
receiving a first configuration of a reference signal associated with an integrated access and backhaul (IAB) distributed unit (IAB-DU);
receiving a second configuration of a resource associated with the IAB-DU, wherein the second configuration indicates that the resource is soft;
receiving a control message from a parent node, wherein the control message comprises an index to the reference signal; and
receiving an availability indication from the parent node, wherein the availability indication indicates whether the resource is available; and
determining whether to perform a first operation by an IAB mobile terminal (IAB-MT) and a second operation by the IAB-DU simultaneously based in part on determining that:
the second operation uses the reference signal as a source of a spatial quasi-collocation (QCL); and
the availability indication indicates that the resource is available.
17 . The method of claim 16 , wherein the first configuration comprises a channel state information reference signal (CSI-RS) configuration or a transmission configuration indication (TCI) configuration.
18 . The method of claim 16 , wherein the resource comprises at least one symbol or at least one group of resource blocks (RBs).
19 . The method of claim 16 , wherein the control message comprises a medium access control (MAC) message.
20 . The method of claim 19 , wherein the MAC message is a beam restriction message.