A channel contention method, comprising: contending, by a remote radio unit, RRU, for a target channel, wherein the contending, by an RRU, for a target channel comprises: determining, by the RRU, that the target channel is in an idle state; and obtaining, by the RRU, a clear channel assessment, CCA, time period, and starting a countdown of the CCA time period; sending, by the RRU, a channel contention parameter to a remote radio unit hub, RHUB, wherein the channel contention parameter comprises CCA time period remaining time or a channel duty cycle; and receiving, by the RRU, cooperation indication information sent by the RHUB according to the channel contention parameter, wherein the cooperation indication information is used to indicate a start moment of a channel contention time period of the RRU, and the start moment and duration of the channel contention time period of the RRU are the same as those of at least one other RRU in a management range of the RHUB; wherein if the RRU obtains the target channel by means of contention according to the cooperation indication information, the method further comprises: enabling, by the RRU, a transmit channel at a same moment with another RRU of the at least one other RRU that obtains the target channel by means of contention; and sending, by the RRU, carrier status information to a baseband control unit BBU, wherein the carrier status information is used to indicate a channel contention result of the RRU. contending, by a remote radio unit, RRU, for a target channel, wherein the contending, by an RRU, for a target channel comprises: determining, by the RRU, that the target channel is in an idle state; and obtaining, by the RRU, a clear channel assessment, CCA, time period, and starting a countdown of the CCA time period; determining, by the RRU, that the target channel is in an idle state; and obtaining, by the RRU, a clear channel assessment, CCA, time period, and starting a countdown of the CCA time period; sending, by the RRU, a channel contention parameter to a remote radio unit hub, RHUB, wherein the channel contention parameter comprises CCA time period remaining time or a channel duty cycle; and receiving, by the RRU, cooperation indication information sent by the RHUB according to the channel contention parameter, wherein the cooperation indication information is used to indicate a start moment of a channel contention time period of the RRU, and the start moment and duration of the channel contention time period of the RRU are the same as those of at least one other RRU in a management range of the RHUB; wherein if the RRU obtains the target channel by means of contention according to the cooperation indication information, the method further comprises: enabling, by the RRU, a transmit channel at a same moment with another RRU of the at least one other RRU that obtains the target channel by means of contention; and sending, by the RRU, carrier status information to a baseband control unit BBU, wherein the carrier status information is used to indicate a channel contention result of the RRU. enabling, by the RRU, a transmit channel at a same moment with another RRU of the at least one other RRU that obtains the target channel by means of contention; and sending, by the RRU, carrier status information to a baseband control unit BBU, wherein the carrier status information is used to indicate a channel contention result of the RRU.