Patent ID: 8229420

Claim:
A mobile terminal for providing a location positioning service for a target area, comprising: a controller configured to request a Secure User Plane Location (SUPL) position initiation request message to a server of a first network during an ongoing periodic or area event session with a second network, to receive a SUPL end message from the first network server including a parameter indicating that a reason for sending the SUPL end message based on a network change due to roaming of the mobile terminal from the first network to the second network, and to transmit a SUPL triggered start message to the first network server, the SUPL triggered start message including a parameter indicating a cause for sending the SUPL triggered start message based on the network change due to roaming of the mobile terminal from the first network to the second network, the controller configured to receive a SUPL triggered response message including at least one new trigger parameter associated with a third network from the first network server, and to continue to perform a periodic or area event session with the third network using the received at least one new trigger parameter.