Signaling for simultaneous operation in integrated access backhaul (IAB) node

A method for an integrated access backhaul (IAB) donor centralized unit (CU) configured to operate in a wireless network, the method comprising:

• sending the following to an IAB node that comprises an IAB distributed unit (IAB-DU) and an IAB mobile terminal (IAB-MT):
• a first configuration of the IAB-MT for operation in a first cell served by a parent IAB node of the IAB node;
• and
• a second configuration of the IAB-DU for serving a second cell;
• receiving, from the IAB node, an indication of one or more capability for simultaneous operation of the IAB-DU and the IAB-MT, in accordance with the first and second configurations;
• determining a multiplexing configuration for each timeslot for the IAB node based on the indicated one or more capability;
• and
• sending the multiplexing configuration to the IAB node.

An integrated access backhaul (IAB) node configured to operate in a wireless network, the IAB node comprising:

• processing circuitry and communication interface circuitry configured as an IAB mobile terminal (IAB-MT) and an IAB distributed unit (IAB-DU), wherein the processing circuitry and the communication interface circuitry are further configured to:
• receive the following from an IAB donor centralized unit (CU) in the wireless network:
• a first configuration of the IAB-MT for operation in a first cell served by a parent IAB node of the IAB node;
• and
• a second configuration of the IAB-DU for serving a second cell;
• send, to the IAB donor CU, an indication of one or more capability for simultaneous operation of the IAB-DU and the IAB-MT, in accordance with the received first and second configurations;
• receive, from the IAB donor CU, a multiplexing configuration for each timeslot based on the indicated one or more capability;
• and
• configure one or more of the following for operation in the second cell according to the received multiplexing configuration:
• one or more child IAB nodes;
• and one or more user equipment (UEs).

An integrated access backhaul (IAB) donor centralized unit (CU) configured to operate in a wireless network, the IAB donor CU comprising communication interface circuitry and processing circuitry that are operably coupled and are configured to:

• send the following to an IAB node that comprises an IAB distributed unit (IAB-DU) and an IAB mobile terminal (IAB-MT):
• a first configuration of the IAB-MT for operation in a first cell served by a parent IAB node of the IAB node;
• and
• a second configuration of the IAB-DU for serving a second cell;
• receive, from the IAB node, an indication of one or more capability for simultaneous operation of the IAB-DU and the IAB-MT, in accordance with the first and second configurations;
• determine a multiplexing configuration for each timeslot for the IAB node based on the indicated one or more capability;
• and
• send the multiplexing configuration to the IAB node.