System and method to enable multiple base reference configurations for layer 1/LAYER2 triggered mobility in a telecommunications network

A method comprising:

• receiving, by a Central Unit (gNB-CU) from a serving Distributed Unit (serving gNB-DU), a first base reference configuration and an indicator indicating an association between a type and/or characteristics of a first cell and the first base reference configuration, wherein the serving gNB-DU supports the first cell having a first layer1/layer2 triggered mobility (LTM) cell configuration corresponding to the first base reference configuration, the first cell being a serving cell for a user equipment (UE), and wherein the gNB-CU maintains multiple base reference configurations associated with types and characteristics of a plurality of candidate cells;
• sending, by the gNB-CU during candidate cell configuration preparation, the first base reference configuration or an indication to provide a new reference configuration to a target Distributed Unit (target gNB-DU), wherein the target gNB-DU supports a second cell to be prepared as a LTM candidate cell for an LTM handover;
• determining, by the target gNB-DU, whether the first base reference configuration is usable with a delta configuration to obtain a full second cell configuration for the second cell;
• and
• based on determining that the first base reference configuration is not usable to obtain the second cell configuration, sending, by the target gNB-DU to the gNB-CU, a second base reference configuration corresponding to the second cell configuration.

A non-transitory computer-readable recording medium having recorded thereon instructions executable by at least one processor to cause the at least one processor to perform a method comprising:

• receiving, by a Central Unit (gNB-CU) from a serving Distributed Unit (serving gNB-DU), a first base reference configuration and an indicator indicating an association between a type and/or characteristics of a first cell and the first base reference configuration, wherein the serving gNB-DU supports the first cell having a first layer1/layer2 triggered mobility (LTM) cell configuration corresponding to the first base reference configuration, the first cell being a serving cell for a user equipment (UE), and wherein the gNB-CU maintains multiple base reference configurations associated with types and characteristics of a plurality of candidate cells;
• sending, by the gNB-CU during candidate cell configuration preparation, the first base reference configuration or an indication to provide a new reference configuration to a target Distributed Unit (target gNB-DU), wherein the target gNB-DU supports a second cell to be prepared as a LTM candidate cell for an LTM handover;
• determining, by the target gNB-DU, whether the first base reference configuration is usable with a delta configuration to obtain a full second cell configuration for the second cell;
• and
• based on determining that the first base reference configuration is not usable to obtain the second cell configuration, sending, by the target gNB-DU to the gNB-CU, a second base reference configuration corresponding to the second cell configuration.