A wireless network, comprising a terminal, a mobile communication network, and a network cloud, wherein: the terminal is connected to the network cloud through the mobile communication network; a virtual machine corresponding to the terminal is provided in the network cloud, and a tenant corresponding to the virtual machine is provided on the terminal; and the virtual machine is configured to run an application and/or process a file as a proxy of the terminal, and upon reception of an operation command sent by the tenant, transmit display screen image data of the application and/or file, corresponding to the operation command to the tenant through a wireless air interface; wherein: the terminal is further configured to report its configuration information to the mobile communication network, and the mobile communication network is configured to generate, according to the configuration information, a quality of service attribute for performing data exchange between the tenant and the virtual machine, wherein the quality of service attribute has a fixed value regardless of the type of the application run by the virtual machine as a proxy for the terminal; the tenant is configured to upload the operation command to the virtual machine according to the fixed quality of service attribute generated by the mobile communication network; or the virtual machine is configured to transmit the display screen image data that is of the application and/or file and corresponds to the operation command to the tenant according to the fixed quality of service attribute generated by the mobile communication network; or the tenant is configured to upload real-time data to the virtual machine according to the fixed quality of service attribute generated by the mobile communication network; or the virtual machine is configured to exchange file data with the tenant according to the fixed quality of service attribute generated by the mobile communication network. the terminal is further configured to report its configuration information to the mobile communication network, and the mobile communication network is configured to generate, according to the configuration information, a quality of service attribute for performing data exchange between the tenant and the virtual machine, wherein the quality of service attribute has a fixed value regardless of the type of the application run by the virtual machine as a proxy for the terminal; the tenant is configured to upload the operation command to the virtual machine according to the fixed quality of service attribute generated by the mobile communication network; or the virtual machine is configured to transmit the display screen image data that is of the application and/or file and corresponds to the operation command to the tenant according to the fixed quality of service attribute generated by the mobile communication network; or the tenant is configured to upload real-time data to the virtual machine according to the fixed quality of service attribute generated by the mobile communication network; or the virtual machine is configured to exchange file data with the tenant according to the fixed quality of service attribute generated by the mobile communication network.