Method for performing seamless group handover for supporting portable tv band device based on tv white space

TV is provided a white-space-based TVBD group handover method, from step, the available channel information providing server for transmitting the multi-position information corresponding to the path that the transfer means move to the available channel information providing server, to a directed multi-position information receiving a multi-channel information (multiple Geo-Location information) in response, the method comprising: on the basis of the multi-channel information, extracts the operating channel set of information the channel switching in accordance with the movement of the moving means to be minimized, and the extraction operation channel set information the transmitting the TVBD group.