Patent ID: 8081986

Claim:
A method of providing location information of a first SUPL Enabled Terminal (SET) at a Home SUPL location platform (H-SLP) which is a network server to a second SET using a Secure User Plane Location (SUPL) protocol in a communication environment, the method comprising: receiving, by the H-SLP, a SUPL START message from the first SET initiating a positioning procedure for transferring location information of the first SET to the second SET via the H-SLP, the SUPL START message including a session identifier, SET capabilities, SET-id information which is an identifier of the second SET, and mode type information which designates either one of the first SET or the second SET to receive the location information of the first SET; transmitting, by the H-SLP, a SUPL RESPONSE message to the first SET, the SUPL RESPONSE message including the session identifier and a positioning method which is to be used for a positioning procedure between the H-SLP and the first SET; receiving, by the H-SLP, a SUPL POS INIT message from the first SET, the SUPL POS INIT message including the session identifier and SET capabilities; calculating the location information of the first SET through a direct connection between the H-SLP and the first SET based on the positioning method, the positioning method being one of a SET-assisted positioning method and a SET-based positioning method; transmitting, by the H-SLP, a SUPL END message to the first SET to inform the end of a SUPL session, the SUPL END message including the session identifier; and transmitting, by the H-SLP, the location information of the first SET to the second SET, after the SUPL session is finished.