Wireless docking system comprising a host device and a dockee device, the host device being arranged for rendering audio or video data, the host device comprising - a host communication unit for accommodating wireless communication, - a remote client unit for providing at least one AV rendering function to a remote client for enabling rendering the audio data via a sound device or the video data via a screen, - at least one transfer unit (211,212,213,214) arranged for enabling transmitting a downstream of first AV data to the dockee device, and receiving an upstream of second AV data to be rendered from the dockee device, the dockee device comprising - a dockee communication unit for accommodating the wireless communication, - a remote server unit for cooperating with the remote client unit for enabling said AV rendering function, - an application unit for receiving of the downstream and for generating of the upstream, and the host device further comprising - an AV router arranged for processing the downstream and the upstream so as to replace original AV data in the first AV data by a predetermined pattern before transmitting the downstream to the dockee device, and replace at least part of the second AV data by at least part of the original AV data after receiving the upstream from the dockee device and before rendering via said AV rendering function, wherein the dockee device is arranged for including, as part of the upstream, the predetermined pattern into the second AV data, and the AV router is arranged for - recognizing the predetermined pattern in the second AV data, and - replacing the second AV data corresponding to said recognized pattern by at least part of the original AV data. - a host communication unit for accommodating wireless communication, - a remote client unit for providing at least one AV rendering function to a remote client for enabling rendering the audio data via a sound device or the video data via a screen, - at least one transfer unit (211,212,213,214) arranged for enabling transmitting a downstream of first AV data to the dockee device, and receiving an upstream of second AV data to be rendered from the dockee device, - a dockee communication unit for accommodating the wireless communication, - a remote server unit for cooperating with the remote client unit for enabling said AV rendering function, - an application unit for receiving of the downstream and for generating of the upstream, and - an AV router arranged for processing the downstream and the upstream so as to replace original AV data in the first AV data by a predetermined pattern before transmitting the downstream to the dockee device, and replace at least part of the second AV data by at least part of the original AV data after receiving the upstream from the dockee device and before rendering via said AV rendering function, wherein replace original AV data in the first AV data by a predetermined pattern before transmitting the downstream to the dockee device, and replace at least part of the second AV data by at least part of the original AV data after receiving the upstream from the dockee device and before rendering via said AV rendering function, wherein - recognizing the predetermined pattern in the second AV data, and - replacing the second AV data corresponding to said recognized pattern by at least part of the original AV data.