Patent ID: 8917687

Claim:
A method for sending a sounding reference signal, comprising: determining a first frequency band required for sending the sounding reference signal, and determining a second frequency band which has a bandwidth less than that of the first frequency band; and sending the sounding reference signal on each of the first frequency band and the second frequency band in a manner that an average interval for sending the sounding reference signal on the first frequency band is greater than an average interval for sending the sounding reference signal on the second frequency band, the sending comprising: determining a first precoding matrix which is used to encode the sounding reference signal for assisting uplink transmission and a second precoding matrix which is used to encode the sounding reference signal for assisting downlink transmission; encoding the sounding reference signal with each of the first precoding matrix and the second precoding matrix, to obtain a first sounding reference signal and a second sounding reference signal; and sending the first sounding reference signal on the first frequency band, and sending the second sounding reference signal on the second frequency band.