Data transfer for integrated access and backhaul system using full-duplex

A method of wireless communication performed by an integrated access and backhaul (IAB) node, comprising:

• receiving, from a child node of the IAB node and via a medium access control control element (MAC-CE), full-duplex (FD) information that includes:
• channel state information (CSI) for a non-FD mode and an FD mode when the child node receives a channel state information reference signal (CSI-RS) from the IAB node on a downlink backhaul link, wherein the CSI for the FD mode is based at least in part on a transmit power restriction value indicating a maximum transmit power for communication in the FD mode, the transmit power restriction value being based at least in part on a self-interference strength associated with transmission on a child backhaul link, between the IAB node and a child IAB node, or an access link between the IAB node and a user equipment (UE), or
• an indication of a transmit power reduction value, associated with a reduction of a transmit power in the FD mode relative to the non-FD mode, when the child node transmits a sounding reference signal to the IAB node on an uplink backhaul link;
• determining an FD resource allocation for the child node,
• wherein the FD resource allocation identifies a resource for communication on:
• at least one of the downlink backhaul link or the uplink backhaul link, and
• at least one of the child backhaul link or the access link;
• and
• transmitting, to the child node, information identifying the FD resource allocation.

An integrated access and backhaul (IAB) node for wireless communication, comprising:

• one or more memories;
• and
• one or more processors coupled to the one or more memories, the one or more processors configured to:
• transmit, to a parent node of the IAB node via a medium access control control element (MAC-CE), full-duplex (FD) information that includes:
• channel state information (CSI) for a non-FD mode and an FD mode when the IAB node receives a channel state information reference signal (CSI-RS) from the parent node on a downlink backhaul link, wherein the CSI for the FD mode is based at least in part on a transmit power restriction value associated with a maximum transmit power for communication in the FD mode, the transmit power restriction value being based at least in part on a self-interference strength from a child backhaul link, between the IAB node and a child IAB node, or an access link between the IAB node and a user equipment (UE), or
• an indication of a transmit power reduction value, associated with a reduction of a transmit power in the FD mode relative to the non-FD mode, when the IAB node transmits a sounding reference signal (SRS) to the parent node on an uplink backhaul link;
• receive an FD resource allocation for the IAB node,
• wherein the FD resource allocation identifies a resource for communication on:
• at least one of the downlink backhaul link or the uplink backhaul link, and
• at least one of the child backhaul link or the access link;
• and
• communicate in accordance with the FD resource allocation on the at least one of the downlink backhaul link or the uplink backhaul link and the at least one of the child backhaul link or the access link.

An integrated access and backhaul (IAB) node for wireless communication, comprising:

• one or more memories;
• and
• one or more processors coupled to the one or more memories, the one or more processors configured to:
• receive, from a child node of the IAB node and via a medium access control control element (MAC-CE), full-duplex (FD) information that includes:
• channel state information (CSI) for a non-FD mode and an FD mode when the child node receives a channel state information reference signal (CSI-RS) from the IAB node on a downlink backhaul link, wherein the CSI at the FD mode is based at least in part on a transmit power restriction value associated with a maximum transmit power for communication in the FD mode, the transmit power restriction value being based at least in part on a self-interference strength from a child backhaul link, between the IAB node and a child IAB node, or an access link between the IAB node and a user equipment (UE), or
• an indication of a transmit power reduction value, associated with a reduction of a transmit power in the FD mode relative to the non-FD mode, when the child node transmits a sounding reference signal to the IAB node on an uplink backhaul link;
• determine an FD resource allocation for the child node,
• wherein the FD resource allocation identifies a resource for communication on:
• at least one of the downlink backhaul link or the uplink backhaul link, and
• at least one of the child backhaul link or the access link;
• and
• transmit, to the child node, information identifying the FD resource allocation.