A communication method for use in a communication apparatus based on Long Term Evolution, LTE, architecture, comprising: receiving, by a first base station, a second base station identity sent by a first mobility management entity MME, and establishing a transmission channel between the first base station and a second base station corresponding to the second base station identity; receiving, by the first base station, data to be sent from a first terminal to a second terminal; and sending, by the first base station, the data to the second base station over the transmission channel, so that the second base station sends the data to the second terminal; wherein the establishing a transmission channel between the first base station and a second base station corresponding to the second base station identity comprises: broadcasting, by the first base station, a path detection message that carries the second base station identity to a neighboring base station; receiving, by the first base station, a response message sent by the neighboring base station, and determining a transmission path to the second base station according to the response message, wherein the response message carries link quality information of a channel and/or information about a total hop count of a link from the first base station to the second base station; and establishing, by the first base station, the transmission channel between the first base station and the second base station based on the determined transmission path. receiving, by a first base station, a second base station identity sent by a first mobility management entity MME, and establishing a transmission channel between the first base station and a second base station corresponding to the second base station identity; receiving, by the first base station, data to be sent from a first terminal to a second terminal; and sending, by the first base station, the data to the second base station over the transmission channel, so that the second base station sends the data to the second terminal; wherein the establishing a transmission channel between the first base station and a second base station corresponding to the second base station identity comprises: broadcasting, by the first base station, a path detection message that carries the second base station identity to a neighboring base station; receiving, by the first base station, a response message sent by the neighboring base station, and determining a transmission path to the second base station according to the response message, wherein the response message carries link quality information of a channel and/or information about a total hop count of a link from the first base station to the second base station; and establishing, by the first base station, the transmission channel between the first base station and the second base station based on the determined transmission path. broadcasting, by the first base station, a path detection message that carries the second base station identity to a neighboring base station; receiving, by the first base station, a response message sent by the neighboring base station, and determining a transmission path to the second base station according to the response message, wherein the response message carries link quality information of a channel and/or information about a total hop count of a link from the first base station to the second base station; and establishing, by the first base station, the transmission channel between the first base station and the second base station based on the determined transmission path.