A method for transmitting an uplink signal, comprising: obtaining, by a serving cell network element of a serving cell, a first power loss generated during signal transmission between the serving cell network element and a user equipment; wherein the serving cell is a cell to which the user equipment belongs; obtaining, by the serving cell network element, a second power loss generated during signal transmission between a neighboring cell network element of at least one neighboring cell of the serving cell and the user equipment; determining, by the serving cell network element, whether the second power loss is less than the first power loss, and when a determination result is yes, using a cell corresponding to the second power loss as an allocating cell; determining whether the first power loss is greater than a first preset threshold, and determining whether the second power loss is less than a second preset threshold, and when determination results are yes, instructing, by the serving cell network element, an allocating cell network element of the allocating cell to allocate the user equipment with a network resource for sending the uplink signal; or determining whether a difference between the first power loss and the second power loss is greater than a preset threshold value, and when a determination result is yes, instructing, by the serving cell network element, an allocating cell network element of the allocating cell to allocate the user equipment with a network resource for sending the uplink signal; receiving, by the serving cell network element of the serving cell, information that is of the network resource and sent by the allocating cell network element of the allocating cell; and sending, by the serving cell network element, the information of the network resource to the user equipment, so that the user equipment sends the uplink signal by using the network resource;. obtaining, by a serving cell network element of a serving cell, a first power loss generated during signal transmission between the serving cell network element and a user equipment; wherein the serving cell is a cell to which the user equipment belongs; obtaining, by the serving cell network element, a second power loss generated during signal transmission between a neighboring cell network element of at least one neighboring cell of the serving cell and the user equipment; determining, by the serving cell network element, whether the second power loss is less than the first power loss, and when a determination result is yes, using a cell corresponding to the second power loss as an allocating cell; determining whether the first power loss is greater than a first preset threshold, and determining whether the second power loss is less than a second preset threshold, and when determination results are yes, instructing, by the serving cell network element, an allocating cell network element of the allocating cell to allocate the user equipment with a network resource for sending the uplink signal; or determining whether a difference between the first power loss and the second power loss is greater than a preset threshold value, and when a determination result is yes, instructing, by the serving cell network element, an allocating cell network element of the allocating cell to allocate the user equipment with a network resource for sending the uplink signal; receiving, by the serving cell network element of the serving cell, information that is of the network resource and sent by the allocating cell network element of the allocating cell; and sending, by the serving cell network element, the information of the network resource to the user equipment, so that the user equipment sends the uplink signal by using the network resource;.