Techniques for supporting positioning for a terminal (sometimes referred to herein as a target device) in a wireless network are described. In an aspect, positioning for a target device includes receiving a Request Location Information message, for a server, that includes a first information element and a second information element, wherein the first information element includes at least one field that is common to multiple positioning methods and wherein the at least one field comprises a quality-of-service (QoS), an indication of whether periodic location information is requested, an indication of whether triggered location information is requested, or any combination thereof, wherein the second information element includes at least one field that is specific to a first positioning method, and performing positioning in response to the Request Location Information message.