Patent ID: 7493126
Filing Date: 2009-02-17
Classification: H04W

Abstract:
1. A location method comprising the steps of: a) from a client terminal, transmitting a location request to a gateway for requesting location information of a target mobile terminal; b) responsive to said location request, performing at said gateway a first privacy check of the client terminal With privacy profile of the target mobile terminal and transmitting an enquiry message from said gateway to a Home Location Register/Home Subscriber Server (HLR/HSS), if (b c) responsive to said enquiry message, returning from said HLR/HSS a reply message to said gateway, containing the identifier of a Serving General packet radio service Support Node/Mobile Services switching Center (SGSN/MSC) with which said target mobile terminal is currently associated; d) responsive to said reply message, transmitting from said gateway a request message to said SGSN/MSC; e) responsive to said request message, transmitting from said SGSN/MSC a notification/verification message to said target mobile terminal and transmitting a verification report to said gateway; and f) responsive to said verification report, performing at said gateway a second privacy check of the client terminal with privacy profile of the target mobile terminal if said verification report indicates that said client terminal is verified by the target mobile terminal and transmitting said last known location information of the target mobile terminal to said client terminal if said client terminal is verified by the second privacy check.