Patent ID: 7158500

Claim:
A method for requesting location data in a communications network, the communications network including a first base station server (BSS) in communication with a first serving mobile location center (SMLC), and a second BSS in communication with a second SMLC and a location measurement unit (LMU) under control of said second SMLC, said first and second BSS in communication with a serving general packet radio service support node (SGSN), the method comprising: generating, at said first SMLC, a request for location data; submitting said request for location data to said first BSS using a packet-switched communications protocol and causing said first BSS to forward said request for location data to said SGSN using a packet-switched communications protocol; and receiving a response to said request for location data, said response generated by said second SMLC, wherein said response is a negative acknowledgement indicating a query error generated by said second SMLC.