Method and device for configuring and reporting measurement for lte/nr interworking in wireless communication system

A method performed by a secondary node (SN) in a multi radio access technology (RAT) dual connectivity, the method comprising:

• receiving, from a master node (MN), a SN addition request message including a configuration information, wherein the configuration information includes information on a number of frequency carriers for measurements;
• transmitting, to a user equipment (UE), a measurement configuration based on the configuration information;
• and
• receiving, from the UE, a measurement report based on the measurement configuration.

A secondary node (SN) in a multi radio access technology (RAT) dual connectivity, the SN comprising:

• a memory;
• a transceiver;
• and
• a processor connected to the memory and the transceiver, and configured to:
• control the transceiver to receive, from a master node (MN), a SN addition request message including a configuration information, wherein the configuration information includes information on a number of frequency carriers for measurements;
• control the transceiver to transmit, to a user equipment (UE), a measurement configuration based on the configuration information;
• and
• control the transceiver to receive, from the UE, a measurement report based on the measurement configuration.