An inter-carrier frequency cooperation method, comprising: determining description information of a second carrier frequency; and sending, by a first communication node, the description information of the second carrier frequency to a second communication node via a first carrier frequency, and the description information of the second carrier frequency at least comprising control channel information of the second carrier frequency; wherein the control channel information of the second carrier frequency comprises one of: a sending period of a control channel, wherein when a frequency band of the second carrier frequency is higher than a frequency band of the first carrier frequency, the sending period of a control channel sent on the second carrier frequency is shorter than a sending period of a control channel sent on the first carrier frequency; control information contained in the control channel, wherein when a frequency band of the second carrier frequency is higher than a frequency band of the first carrier frequency, the number of bits describing resource allocation information in control information contained in a control channel sent on the second carrier frequency is smaller than the number of bits describing resource allocation information in control information contained in a control channel sent on the first carrier frequency; and indication information of a resource used for sending the control channel, wherein when a frequency band of the second carrier frequency is higher than a frequency band of the first carrier frequency, a bandwidth occupied by a control channel sent on the second carrier frequency is larger than a bandwidth occupied by a control channel sent on the first carrier frequency. determining description information of a second carrier frequency; and sending, by a first communication node, the description information of the second carrier frequency to a second communication node via a first carrier frequency, and the description information of the second carrier frequency at least comprising control channel information of the second carrier frequency; wherein the control channel information of the second carrier frequency comprises one of: a sending period of a control channel, wherein when a frequency band of the second carrier frequency is higher than a frequency band of the first carrier frequency, the sending period of a control channel sent on the second carrier frequency is shorter than a sending period of a control channel sent on the first carrier frequency; control information contained in the control channel, wherein when a frequency band of the second carrier frequency is higher than a frequency band of the first carrier frequency, the number of bits describing resource allocation information in control information contained in a control channel sent on the second carrier frequency is smaller than the number of bits describing resource allocation information in control information contained in a control channel sent on the first carrier frequency; and indication information of a resource used for sending the control channel, wherein when a frequency band of the second carrier frequency is higher than a frequency band of the first carrier frequency, a bandwidth occupied by a control channel sent on the second carrier frequency is larger than a bandwidth occupied by a control channel sent on the first carrier frequency. a sending period of a control channel, wherein when a frequency band of the second carrier frequency is higher than a frequency band of the first carrier frequency, the sending period of a control channel sent on the second carrier frequency is shorter than a sending period of a control channel sent on the first carrier frequency; control information contained in the control channel, wherein when a frequency band of the second carrier frequency is higher than a frequency band of the first carrier frequency, the number of bits describing resource allocation information in control information contained in a control channel sent on the second carrier frequency is smaller than the number of bits describing resource allocation information in control information contained in a control channel sent on the first carrier frequency; and indication information of a resource used for sending the control channel, wherein when a frequency band of the second carrier frequency is higher than a frequency band of the first carrier frequency, a bandwidth occupied by a control channel sent on the second carrier frequency is larger than a bandwidth occupied by a control channel sent on the first carrier frequency.