Patent ID: 11946981
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A cable sequence detection method, wherein a base station antenna comprises N ports, a remote radio unit (RRU) comprises M antenna ports and one calibration port (CAL), any port i of the base station antenna corresponds to a directional coupling branch Ti, a switch circuit Ki is disposed on the Ti, connection and disconnection of the switch circuit Ki are controlled by a remote control unit (RCU), M, N, and i are integers, 1≤i≤N, the M antenna ports of the RRU have been connected to the N ports of the base station antenna, and the method comprises:
sending, by the RRU, a detection signal to the base station antenna through any antenna port j;
controlling, by the RCU, the switch circuit Ki to be disconnected, and controlling another switch circuit to be connected;
detecting, by the RRU, whether energy Qi obtained during coupling by the directional coupling branch Ti is greater than a threshold; and
in response to Qi being greater than the threshold, determining that the antenna port j of the RRU is connected to the port i of the base station antenna; or
in response to Qi being less than or equal to the threshold, determining that the antenna port j of the RRU is not connected to the port i of the base station antenna.