A method for sending a positioning signal performed by a first device, the method comprising: • determining (S 21) a first target access network used to transmit a positioning signal, wherein the first target access network comprises at least one of a first access network and a second access network, wherein the determining the first target access network used to transmit the positioning signal comprises: o determining, when the first access network satisfies a first condition, that the first access network is the first target access network; o determining, when the second access network satisfies the first condition, that the second access network is the first target access network; and o determining, when neither of the first access network and the second access network satisfies the first condition, that the first target access network is the first access network and the second access network, wherein the first condition comprises at least one of: ▪ a channel quality of an access network being greater than a first preset value, ▪ a load of the access network being less than a second preset value, and ▪ a throughput of the access network being less than a third preset value; • sending (S 22) the positioning signal to a second device by using the first target access network. • determining (S 21) a first target access network used to transmit a positioning signal, wherein the first target access network comprises at least one of a first access network and a second access network, wherein the determining the first target access network used to transmit the positioning signal comprises: o determining, when the first access network satisfies a first condition, that the first access network is the first target access network; o determining, when the second access network satisfies the first condition, that the second access network is the first target access network; and o determining, when neither of the first access network and the second access network satisfies the first condition, that the first target access network is the first access network and the second access network, wherein the first condition comprises at least one of: ▪ a channel quality of an access network being greater than a first preset value, ▪ a load of the access network being less than a second preset value, and ▪ a throughput of the access network being less than a third preset value; o determining, when the first access network satisfies a first condition, that the first access network is the first target access network; o determining, when the second access network satisfies the first condition, that the second access network is the first target access network; and o determining, when neither of the first access network and the second access network satisfies the first condition, that the first target access network is the first access network and the second access network, wherein the first condition comprises at least one of: ▪ a channel quality of an access network being greater than a first preset value, ▪ a load of the access network being less than a second preset value, and ▪ a throughput of the access network being less than a third preset value; ▪ a channel quality of an access network being greater than a first preset value, ▪ a load of the access network being less than a second preset value, and ▪ a throughput of the access network being less than a third preset value; • sending (S 22) the positioning signal to a second device by using the first target access network.