Sending the supplementary broadcast frame instruction to the gateway device and the at least one other gateway device within the first preset distance range relative to the gateway device includes the following acts:

determining the second preset distance range according to the locating information fed back by the target mobile terminal last time, wherein the second preset distance range is a range defined by taking a positioned location in the locating information fed back last time as a center and a second distance as a radius.

The supplementary broadcast frame instruction is sent to the gateway device and other gateway devices within the first preset distance range and the second preset distance range.

In this embodiment, the second preset distance range is defined according to the locating information fed back by the target mobile terminal last time, thus the current possible location of the target mobile terminal is better determined, other gateway devices that are more likely to be connected to the target mobile terminal can be more accurately positioned, and the number of other gateway devices to which the temporary supplementary broadcast frame needs to be sent may be reduced to a certain extent, and thereby reducing the overall power consumption of the system.

In one or more embodiments of the present disclosure, the method further includes:

receiving locating information fed back by the target mobile terminal;

determining a movement track of the target mobile terminal according to the locating information fed back by the target mobile terminal and received within a predetermined time length range from a current time node.