Method for channel degrading, reexamining and upgrading of radio-frequency remote radio unit of base station

The invention discloses a method for channel degrading of a radio-frequency remote radio unit of a base station, which judges an RRU channel of a radio-frequency remote radio unit is blocked or not according to the alignment condition of an antenna. The method comprises the following steps: when a cell is established or reconfigured, calculating an amplitude threshold value of the automatic blocking of the channel; carrying out alignment of the antenna; judging whether to request a base band unit (BBU) to block the channel or not by the RRU according to an antenna alignment channel magnitude-phase estimating result by combining the amplitude threshold value of the automatic blocking of the channel, and if so, executing a next step; deciding whether to block the channel or not by the BBU; if the BBU decides to block the channel, then executing a next step; adjusting a shaping value of the intelligent antenna and turning off a corresponding RRU channel power supply by the BBU. The invention has simplicity, high efficiency and strong practicability.