Communication related to ue context

A next generation NodeB Central Unit (gNB-CU) for performing the communication, the gNB-CU comprising:

• at least one processor;
• and
• at least one memory, storing instructions and operably electrically coupled to the at least one processor,
• wherein based on the instructions being executed by the at least one processor, operations performed by the at least one processor comprising:
• transmitting request message related to User Equipment (UE) context to gNB-Distributed Unit (DU),
• wherein the request message includes information related to old gNB-DU F1 Application Protocol (F1AP) UE ID;
• receiving response message from the gNB-DU,
• wherein the information related to old gNB-DU F1AP UE ID enables the gNB-DU to setup UE context based on retrieving old resource configuration and old UE context.

A method for performing communication, the method performed by a next generation NodeB Distributed Unit (gNB-DU) performs communication,

• receiving a request message related to a User Equipment (UE) context from a gNB-Central Unit (gNB-CU),
• wherein the request message includes information related to an old F1 Application Protocol (F1AP) UE ID;
• and
• retrieving, based on the old F1AP UE ID, an old resource configuration and an old UE context;
• setting up a UE context based on the retrieved old resource configuration and the old UE context;
• and
• transmitting a response message to the gNB-CU.