Patent ID: 8510627

Claim:
A method for monitoring an error code of a Common Public Radio Interface (CPRI) link, comprising: a CPRI link data transmitting end forming data to be transmitted into frames, outputting the data, and calculating to obtain a Frame Check Sequence (FCS) of each frame; wherein, the CPRI link data transmitting end adds the FCS of a former frame into an FCS field of a current frame when forming the frame; and a CPRI link data receiving end splitting the frame of received frame data to obtain the FCS of the former frame which is carried in the current frame, calculating the received frame data to obtain the FCS of the current frame, caching the FCS of the current frame, comparing the FCS of the former frame which is carried in the current frame with the cached FCS of the former frame, and judging that there is an error code in the CPRI link if the comparison result is that the FCS of the former frame which is carried in the current frame is inconsistent with the cached FCS of the former frame.