Uplink beam determination in wireless communication system with full-duplex

A network node configured to communicate with a parent node and a child node, the network node comprising:

• a transceiver;
• a memory;
• and
• a processor communicatively coupled to the transceiver and the memory,
• wherein the processor, the transceiver, and the memory are configured to:
• determine uplink (UL) parent and child link priorities for parent and child time-domain resources that overlap in time at least partially, wherein determining UL parent and child link priorities comprises:
• determining resource types of the parent and child time-domain resources;
• and
• determining primary and secondary links based on the resource types of the parent and child time-domain resources, the primary link being one of the UL parent and child links and the secondary link being other of the UL parent and child links, and the primary link having a higher priority than the secondary link;
• determine UL parent and child beams based on the UL parent and child link priorities wherein when the primary link is the UL child link, the determining of the UL parent and child beams comprises:
• determining the UL child beam;
• selecting a set of parent beams based on the UL child beam, the set of parent beams comprising one or more beams for communication between the network node and the parent node;
• notifying the parent node about the selecting;
• and
• receiving an indication from the parent node about a determination of the UL parent beam, the UL parent beam being a parent beam of the set of parent beams;
• notify the parent node of the UL parent beam for the parent and child time-domain resources;
• and
• concurrently transmit parent traffic to the parent node using the UL parent beam and receive child traffic from the child node using the UL child beam,
• wherein one of the UL parent and child links is a higher priority link and the other of the UL parent and child links is a lower priority link in which a primary beam is associated with the higher priority link and a secondary beam is associated with the lower priority link, the primary beam being one of the UL parent and child beams and the secondary beam being the other of the UL parent and child beams, and
• wherein in determining UL parent and child beams, the primary beam is determined, and then the secondary beam is determined based on the primary beam.

A network node for communicating with a parent node and a child node, the network node comprising:

• means for determining uplink (UL) parent and child link priorities for parent and child time-domain resources that overlap in time at least partially, wherein the means for determining UL parent and child link priorities further comprises:
• determining resource types of the parent and child time-domain resources;
• and
• determining primary and secondary links based on the resource types of the parent and child time-domain resources, the primary link being one of the UL parent and child links and the secondary link being other of the UL parent and child links, and the primary link having a higher priority than the secondary link;
• means for determining UL parent and child beams based on the UL parent and child link priorities wherein when the primary link is the UL child link, the means for determining of the UL parent and child beams comprises:
• determining the UL child beam;
• selecting a set of parent beams based on the UL child beam, the set of parent beams comprising one or more beams for communication between the network node and the parent node;
• notifying the parent node about the selecting;
• and
• receiving an indication from the parent node about a determination of the UL parent beam, the UL parent beam being a parent beam of the set of parent beams;
• means for notifying the parent node of the UL parent beam for the parent and child time-domain resources;
• and
• means for concurrently transmitting parent traffic to the parent node using the UL parent beam and receiving child traffic from the child node using the UL child beam,
• wherein one of the UL parent and child links is a higher priority link and the other of the UL parent and child links is a lower priority link in which a primary beam is associated with the higher priority link and a secondary beam is associated with the lower priority link, the primary beam being one of the UL parent and child beams and the secondary beam being the other of the UL parent and child beams, and
• wherein in determining UL parent and child beams, the primary beam is determined, and then the secondary beam is determined based on the primary beam.