In the examples, at the start of an emergency call, a mobile station determines one or more types of wireless access technologies available from the mobile communication network, from among wireless access technologies supported by the mobile station. Based on a hierarchy regarding ability to determine location of the mobile station using each of the supported wireless access technologies, the mobile station selects an available wireless access technology of the mobile communication network offering the best ability to determine location of the mobile station and initiates a determination of the location of the mobile station for purposes of the emergency call via the mobile communication network using the selected wireless access technology.