Monitoring method

The embodiment of the invention discloses a monitoring method. For a condition that multiple suspicious links coexist, the channel state information of the suspicious links is obtained at first; then,according to the channel state information of the suspicious links, the suspicious links are divided into two parts including the suspicious links in a monitoring state already and the suspicious links not in the monitoring state temporarily; for the suspicious links in the monitoring state already, a legal monitoring end takes itself as a relay end of the suspicious links; the suspicious links are monitored by utilization of a monitoring link; for the suspicious links not in the monitoring state temporarily, the legal monitoring end sends man-made noise to a suspicious receiving end; and thus, after the suspicious links are in the monitoring state, the legal monitoring end takes itself as an interference end of the suspicious links. In the embodiment of the invention, different strategies are adopted according t