Method, device and system for realizing location service

The invention discloses a method, a device and a system for realizing a location service. The method comprises the following steps of: sending a locating request which carries a location terminal identification to a mobile management embodiment MME by a location server/service mobile location center LS/SMLC, acquiring an eNodeB address of a located terminal by the LS/SMLC, sending the locating request to an enhanced base station eNodeB by the LS/SMLC, and receiving a fed back locating initial data of the eNodeB by the LS/SMLC so as to acquire a location result. The invention provides a methodfor realizing a location service in order to smoothly perform the location service in a SAE network.