Patent ID: 7627332

Claim:
A method of performing periodic positioning in a mobile communication network, the method performed by a SLP (SUPL Location Platform) and comprising: receiving, from a Secure User Plane Location (SUPL) agent, a request message for periodic positioning of a target terminal (SET); sending, to the target terminal, a first Secure User Plane Location (SUPL) message that includes trigger type information related to the periodic positioning; receiving, from the target terminal, a Secure User Plane Location (SUPL) START message to start a periodic triggered session with the SLP for the periodic positioning, the SUPL START message including at least a session-id and target terminal capabilities, wherein the target terminal capabilities are used to select an intended positioning method to be used for the periodic triggered session; sending, to the target terminal, a second Secure User Plane Location (SUPL) message that includes information related to a start time of the periodic triggered session and an interval for the periodic positioning; receiving, from the target terminal, a Secure User Plane Location (SUPL) POS INIT message to start the periodic positioning; exchanging, with the target terminal, positioning procedure messages for the periodic positioning; calculating a position of the target terminal based upon the exchanged positioning procedure messages; and reporting, to the SUPL agent, the calculated position of the target terminal, wherein all of the above steps are based on Secure User Plane Location (SUPL) technology that provides periodic positioning through a user plane, and wherein the SLP and the target terminal support Internet Protocol (IP).