A self-mobile node, comprising: an obtaining module, configured to obtain initial to-be-assisted location information, wherein the initial to-be-assisted location information is location information determined by a control device or the self-mobile node according to an assistance request received from at least one to-be-assisted node, and the assistance request carries one or more of location information of the to-be-assisted node, coverage area information of the to-be-assisted node, location information of a backhaul node used by the to-be-assisted node, coverage area information of a backhaul node used by the to-be-assisted node, or area identification information used to identify an area in which the to-be-assisted node is located; and a control module, configured to control, according to the initial to-be-assisted location information obtained by the obtaining module, the self-mobile node to move to an initial location range corresponding to the initial to-be-assisted location information, wherein the obtaining module is further configured to obtain finely adjusted to-be-assisted location information after the control module controls the self-mobile node to move to the initial location range, wherein the finely adjusted to-be-assisted location information is location information determined by the control device or the self-mobile node according to capability information of the self-mobile node, and is finely adjusted relative to the initial to-be-assisted location information, and location information and load information of each to-be-assisted node; and the control module is further configured to: control, according to the finely adjusted to-be-assisted location information obtained by the obtaining module, the self-mobile node to move to a finely adjusted location range corresponding to the finely adjusted to-be-assisted location information, and control the self-mobile node to provide an assistance service for each to-be-assisted node around the self-mobile node within the finely adjusted location range. an obtaining module, configured to obtain initial to-be-assisted location information, wherein the initial to-be-assisted location information is location information determined by a control device or the self-mobile node according to an assistance request received from at least one to-be-assisted node, and the assistance request carries one or more of location information of the to-be-assisted node, coverage area information of the to-be-assisted node, location information of a backhaul node used by the to-be-assisted node, coverage area information of a backhaul node used by the to-be-assisted node, or area identification information used to identify an area in which the to-be-assisted node is located; and a control module, configured to control, according to the initial to-be-assisted location information obtained by the obtaining module, the self-mobile node to move to an initial location range corresponding to the initial to-be-assisted location information, wherein the obtaining module is further configured to obtain finely adjusted to-be-assisted location information after the control module controls the self-mobile node to move to the initial location range, wherein the finely adjusted to-be-assisted location information is location information determined by the control device or the self-mobile node according to capability information of the self-mobile node, and is finely adjusted relative to the initial to-be-assisted location information, and location information and load information of each to-be-assisted node; and the control module is further configured to: control, according to the finely adjusted to-be-assisted location information obtained by the obtaining module, the self-mobile node to move to a finely adjusted location range corresponding to the finely adjusted to-be-assisted location information, and control the self-mobile node to provide an assistance service for each to-be-assisted node around the self-mobile node within the finely adjusted location range.