DATA SENDING METHOD AND APPARATUS, AND NETWORK DEVICE

The present invention provides a data sending method and apparatus, and a network device. When a first secondary node and a second secondary node send data by occupying same time-frequency resources, a pilot sequence is selected for the first secondary node, the relevance between the pilot sequence selected for the first secondary node and a pilot sequence of the second secondary node satisfies a preset condition; the preset condition can indicate that pilot interference between the first secondary node and the second secondary node falls within a preset range; accordingly, when the first secondary node uses a corresponding pilot sequence, the pilot interference between the first secondary node and the second secondary node can be removed, so that the second secondary node can perform channel estimation according to the selected pilot sequence. For the selected pilot sequence, the position of the pilot sequence in the first secondary node is the same as the position of the pilot sequence in a subcarrier of th