A backhaul control communication method comprising the steps of: a. enabling a relay station to create a radio link having a control plane connection between the relay station and a base station, wherein a wireless communication system comprises the relay station, the base station, and a core network, the relay station is wirelessly connected to the base station, the base station is wiredly connected to the core network, and the wireless communication system conforms to the long term evolution standard; b. enabling the relay station to create at least one of an S1 interface and an X2 interface of the long term evolution standard between the relay station and the base station upon the radio resource control layer and the packet data convergence protocol layer by the control plane connection of the radio link, wherein the step (b) creates the S1 interface by the following steps: enabling the relay station to add a parameter in a dedicatedInformationType of the long term evolution standard, the parameter being related to a container for dedicated information of S1-AP message; enabling the relay station to generate an S1 setup request message; enabling the relay station to generate a first S1-AP message carrying the S1 setup request message by the container for dedicated information of S1-AP message; enabling the relay station to generate an uplink message carrying the first S1-AP message by a ULInformationTransfer message of the long term evolution standard; enabling the relay station to transmit the uplink message; enabling the relay station to receive a downlink message from the base station; enabling the relay station to extract a second S1-AP message from the downlink message by removing a DLInformationTransfer message of the long term evolution standard; and enabling the relay station to extract an S1 setup response message from the second S1-AP message by removing the container for dedicated information of S1-AP message; and c. enabling the relay station to transmit a backhaul control message via the at least one of an S1 interface and an X2 interface. a. enabling a relay station to create a radio link having a control plane connection between the relay station and a base station, wherein a wireless communication system comprises the relay station, the base station, and a core network, the relay station is wirelessly connected to the base station, the base station is wiredly connected to the core network, and the wireless communication system conforms to the long term evolution standard; b. enabling the relay station to create at least one of an S1 interface and an X2 interface of the long term evolution standard between the relay station and the base station upon the radio resource control layer and the packet data convergence protocol layer by the control plane connection of the radio link, wherein the step (b) creates the S1 interface by the following steps: enabling the relay station to add a parameter in a dedicatedInformationType of the long term evolution standard, the parameter being related to a container for dedicated information of S1-AP message; enabling the relay station to generate an S1 setup request message; enabling the relay station to generate a first S1-AP message carrying the S1 setup request message by the container for dedicated information of S1-AP message; enabling the relay station to generate an uplink message carrying the first S1-AP message by a ULInformationTransfer message of the long term evolution standard; enabling the relay station to transmit the uplink message; enabling the relay station to receive a downlink message from the base station; enabling the relay station to extract a second S1-AP message from the downlink message by removing a DLInformationTransfer message of the long term evolution standard; and enabling the relay station to extract an S1 setup response message from the second S1-AP message by removing the container for dedicated information of S1-AP message; and enabling the relay station to add a parameter in a dedicatedInformationType of the long term evolution standard, the parameter being related to a container for dedicated information of S1-AP message; enabling the relay station to generate an S1 setup request message; enabling the relay station to generate a first S1-AP message carrying the S1 setup request message by the container for dedicated information of S1-AP message; enabling the relay station to generate an uplink message carrying the first S1-AP message by a ULInformationTransfer message of the long term evolution standard; enabling the relay station to transmit the uplink message; enabling the relay station to receive a downlink message from the base station; enabling the relay station to extract a second S1-AP message from the downlink message by removing a DLInformationTransfer message of the long term evolution standard; and enabling the relay station to extract an S1 setup response message from the second S1-AP message by removing the container for dedicated information of S1-AP message; and c. enabling the relay station to transmit a backhaul control message via the at least one of an S1 interface and an X2 interface.