A communication method, performed by a communications device including a local break out module, a mobile local access network MLAN controller, a MLAN authentication and authorization module, and a MLAN forwarding processing module, the method comprising: receiving, by the local break out module, data that is sent by a terminal through a base station, wherein the data comprises an identifier of a receive end and to-be-sent information, the receive end and the terminal are located in a MLAN, and the MLAN is a local access network established based on a wireless cellular network; and sending by the MLAN forwarding processing module, based on an MLAN address corresponding to the identifier of the receive end, the to-be-sent information to the receive end through the base station characterized in that a process of establishing the MLAN comprises: receiving, by the MLAN controller, an identifier that is of the terminal and that is sent by the terminal through the base station; sending, by the MLAN controller, an authentication request to the MLAN authentication and authorization module, where the authentication request includes the identifier of the terminal; if it is determined, based on the identifier of the terminal, that the terminal is valid: receiving, by the MLAN controller, an authentication success response from the MLAN authentication and authorization module; allocating, by the MLAN controller, to the terminal, an MLAN address corresponding to the identifier of the terminal. allocating,, by the MLAN controller, to the terminal, a tunnel corresponding to the identifier of the terminal; and sending, by the MLAN controller, information about the tunnel to the terminal through the base station. receiving, by the local break out module, data that is sent by a terminal through a base station, wherein the data comprises an identifier of a receive end and to-be-sent information, the receive end and the terminal are located in a MLAN, and the MLAN is a local access network established based on a wireless cellular network; and sending by the MLAN forwarding processing module, based on an MLAN address corresponding to the identifier of the receive end, the to-be-sent information to the receive end through the base station characterized in that a process of establishing the MLAN comprises: receiving, by the MLAN controller, an identifier that is of the terminal and that is sent by the terminal through the base station; sending, by the MLAN controller, an authentication request to the MLAN authentication and authorization module, where the authentication request includes the identifier of the terminal; if it is determined, based on the identifier of the terminal, that the terminal is valid: receiving, by the MLAN controller, an authentication success response from the MLAN authentication and authorization module; allocating, by the MLAN controller, to the terminal, an MLAN address corresponding to the identifier of the terminal. allocating,, by the MLAN controller, to the terminal, a tunnel corresponding to the identifier of the terminal; and sending, by the MLAN controller, information about the tunnel to the terminal through the base station. receiving, by the MLAN controller, an identifier that is of the terminal and that is sent by the terminal through the base station; sending, by the MLAN controller, an authentication request to the MLAN authentication and authorization module, where the authentication request includes the identifier of the terminal; if it is determined, based on the identifier of the terminal, that the terminal is valid: receiving, by the MLAN controller, an authentication success response from the MLAN authentication and authorization module; allocating, by the MLAN controller, to the terminal, an MLAN address corresponding to the identifier of the terminal. allocating,, by the MLAN controller, to the terminal, a tunnel corresponding to the identifier of the terminal; and sending, by the MLAN controller, information about the tunnel to the terminal through the base station. receiving, by the MLAN controller, an authentication success response from the MLAN authentication and authorization module; allocating, by the MLAN controller, to the terminal, an MLAN address corresponding to the identifier of the terminal. allocating,, by the MLAN controller, to the terminal, a tunnel corresponding to the identifier of the terminal; and sending, by the MLAN controller, information about the tunnel to the terminal through the base station.