Method and apparatus for requesting positioning assistance data in mobile wireless communication system

A method by a terminal, the method comprising:

• receiving, by the terminal from a base station, a System Information Block1(SIB1), the SIB1 comprises a first scheduling information and a second scheduling information;
• acquiring, by the terminal, a System Information (SI) based at least in part on the first scheduling information and the second scheduling information, the SI includes a positioning SIB, the positioning SIB includes one or more second Positioning Reference Signal (PRS) data, each of the one or more second PRS data includes a second identifier and one or more nr-DL-PRS-ResourceSet;
• transmitting, by the terminal to the base station, a UECapabilitylnformation, the UECapabilitylnformation includes a capability information related to PRS;
• transmitting, by the terminal to a Location Management Function (LMF), a provideCapabilities, the provideCapabilities includes a capability information related to Sounding Reference Signal (SRS);
• transmitting, by the terminal to the Location Management Function (LMF), a RequestAssistanceData, the RequestAssistanceData includes a physical cell identitfier of Primary Cell (PCell) and a second identifier, the second identifier is related to a second PRS data of the one or more second PRS data;
• receiving, by the terminal from the LMF, a ProvideAssistanceData, the ProvideAssistanceData includes a first PRS data, the first PRS data includes a first identifier and one or more nr-DL-PRS-ResourceSet;
• receiving, by the terminal from the base station, a RRCRelease, the RRCRelease includes information related to SRS transmission in RRC_INACTIVE;
• transmitting, by the terminal, a positioning SRS in RRC_INACTIVE state;
• and
• transmitting, by the terminal to the LMF, a ProvideLocationlnformation.