Techniques for inter-gNB migration of distributed unit

An apparatus for wireless communications, comprising:

• at least one processor;
• and memory coupled to the at least one processor, the memory including instructions executable by the at least one processor to cause the apparatus to:
• establish a first signaling connection between a source integrated access and backhaul (IAB) donor centralized unit (CU) with at least one IAB distributed unit (DU);
• establish a second signaling connection between the source IAB-donor CU and a target IAB-donor CU;
• configure the source IAB-donor CU to function as a first proxy for the at least one IAB-DU in order to transmit state information associated with the at least one IAB-DU to the target IAB-donor CU;
• receive, at the source IAB-donor CU, a state update information from the target IAB-donor CU;
• and
• configure the source IAB-donor CU to function as a second proxy for the target IAB-donor CU in transmitting the state update information to the at least one IAB-DU, wherein the instructions to configure the source IAB-donor CU to function as the second proxy for the target IAB-donor CU are further executable by the at least one processor to cause the apparatus to:
• determine an identifier associated with the target IAB-donor CU;
• and
• represent the source IAB-donor CU as the target IAB-donor CU to the at least one IAB DU by adopting the identifier of the target IAB-donor CU for communications with the at least one IAB-DU.

A non-transitory computer readable medium storing instructions, executable by a processor, for wireless communications, comprising instructions for:

• establishing a first signaling connection between a source integrated access and backhaul (IAB) donor centralized unit (CU) of a base station with at least one IAB distributed unit (DU);
• establishing a first signaling connection between a source integrated access and backhaul (IAB) donor centralized unit (CU) with at least one IAB distributed unit (DU);
• establishing a second signaling connection between the source IAB-donor CU and a target IAB-donor CU;
• configuring the source IAB-donor CU to function as a first proxy for the at least one IAB-DU in order to transmit state information associated with the at least one IAB-DU to the target IAB-donor CU;
• receiving, at the source IAB-donor CU, a state update information from the target IAB-donor CU;
• and
• configuring the source IAB-donor CU to function as a second proxy for the target IAB-donor CU in transmitting the state update information to the at least one IAB-DU, wherein configuring the source IAB-donor CU to function as the second proxy for the target IAB-donor CU further include instructions for:
• determining an identifier associated with the target IAB-donor CU;
• and
• representing the source IAB-donor CU as the target IAB-donor CU to the at least one IAB DU by adopting the identifier of the target IAB-donor CU for communications with the at least one IAB-DU.

An apparatus for wireless communications, comprising:

• means for establishing a first signaling connection between a source integrated access and backhaul (IAB) donor centralized unit (CU) with at least one IAB distributed unit (DU);
• means for establishing a second signaling connection between the source IAB-donor CU and a target IAB-donor CU;
• means for configuring the source IAB-donor CU to function as a first proxy for the at least one IAB-DU in order to transmit state information associated with the at least one IAB-DU to the target IAB-donor CU;
• means for receiving, at the source IAB-donor CU, a state update information from the target IAB-donor CU;
• and
• means for configuring the source IAB-donor CU to function as a second proxy for the target IAB-donor CU in transmitting the state update information to the at least one IAB-DU, wherein means for configuring the source IAB-donor CU to function as the second proxy for the target IAB-donor CU comprises:
• means for determining an identifier associated with the target IAB-donor CU;
• and
• means for representing the source IAB-donor CU as the target IAB-donor CU to the at least one IAB DU by adopting the identifier of the target IAB-donor CU for communications with the at least one IAB-DU.