A single positioning controller, SPC, comprising: a receiving module, configured to receive a positioning request message sent by a positioning request device, wherein the positioning request message comprises an identifier of to-be-positioned user equipment, UE; a processing module, configured to obtain capability information of the to-be-positioned UE according to the identifier of the UE, wherein the capability information of the to-be-positioned UE indicates radio standards supported by the UE; a sending module configured to send a first UE capability query message to a second access network device according to the identifier of the to-be-positioned UE, wherein the second access network device is an access network device to which a server cell of the to-be-positioned UE belongs; the receiving module further configured to receive a first UE capability query response message sent by the second access network device, wherein the first UE capability query message comprises the capability information of the to-be-positioned UE; the processing module further configured to determine at least one first access network device according to the capability information of the to-be-positioned UE, wherein the at least one first access network device is located in a neighboring cell of the to-be-positioned UE, and the at least one first access network device supports one of the radio standards supported by the to-be-positioned UE; perform positioning configuration of the to-be-positioned UE according to downlink positioning signal configuration information of the at least one first access network device and of the second access network device; the receiving module further configured to obtain a positioning measurement report of the to-be-positioned UE, wherein the positioning measurement report comprises a positioning measurement result parameter of the to-be-positioned UE; and the processing module further configured to position the to-be-positioned UE according to the positioning measurement result parameter of the to-be-positioned UE. a receiving module, configured to receive a positioning request message sent by a positioning request device, wherein the positioning request message comprises an identifier of to-be-positioned user equipment, UE; a processing module, configured to obtain capability information of the to-be-positioned UE according to the identifier of the UE, wherein the capability information of the to-be-positioned UE indicates radio standards supported by the UE; a sending module configured to send a first UE capability query message to a second access network device according to the identifier of the to-be-positioned UE, wherein the second access network device is an access network device to which a server cell of the to-be-positioned UE belongs; the receiving module further configured to receive a first UE capability query response message sent by the second access network device, wherein the first UE capability query message comprises the capability information of the to-be-positioned UE; the processing module further configured to determine at least one first access network device according to the capability information of the to-be-positioned UE, wherein the at least one first access network device is located in a neighboring cell of the to-be-positioned UE, and the at least one first access network device supports one of the radio standards supported by the to-be-positioned UE; perform positioning configuration of the to-be-positioned UE according to downlink positioning signal configuration information of the at least one first access network device and of the second access network device; the receiving module further configured to obtain a positioning measurement report of the to-be-positioned UE, wherein the positioning measurement report comprises a positioning measurement result parameter of the to-be-positioned UE; and the processing module further configured to position the to-be-positioned UE according to the positioning measurement result parameter of the to-be-positioned UE.