Dynamic cell reselection priority in open radio access networks

A method, performed by a near-real time radio access network (RAN) intelligent controller (near-RT RIC) in an open RAN (O-RAN) 5G system (5GS), of changing a cell reselection priority and sub-priority for intra-frequency neighbor cells, inter-frequency neighbor cells, or inter-RAT neighbor cells, the method comprising:

• engaging in an E2 setup establishment with an E2 node;
• engaging in an A1 connection establishment with a RAN service management and orchestrator (SMO);
• participating in a RIC subscription procedure with the E2 node;
• participating in a query policy procedure with the SMO;
• receiving one or more input parameters from one or more of the E2 node and the SMO . . . the one or more input parameters including a number of user equipment (UE) devices in each cell across each absolute radio frequency channel number (ARFCN) configured as a neighbor of a serving cell;
• and
• dynamically determining a cell reselection priority and sub-priority based on the one or more input parameters received from one or more of the E2 node or the SMO.

A method, performed by an E2 node in an open RAN (O-RAN) 5G system (5GS), of changing a cell reselection priority and sub-priority for intra-frequency neighbor cells, inter-frequency neighbor cells, or inter-RAT neighbor cells, the method comprising:

• engaging in an E2 setup establishment with a near-real time radio access network (RAN) intelligent controller (near-RT RIC);
• providing the near-RT RIC with input parameters that the near-RT RIC uses to determine an updated cell reselection priority and sub-priority, the input parameters including a number of user equipment (UE) devices in each cell across each absolute radio frequency channel number (ARFCN) configured as a neighbor of a serving cell;
• receiving from the near-RT RIC a RIC control request with the updated cell reselection priority and sub-priority;
• and
• signaling the updated cell reselection priority and sub-priority towards a UE.