Patent ID: 8588160
Filing Date: 2013-11-19
Classification: H04L,H04W

Abstract:
1. A method for a dependent station to operate within a white space, the method comprising: receiving, from an enabling station, a White Space Map (WSM) comprising a list of available channels and a list of maximum allowed transmission powers of the available channels; operating only within the available channels identified by the WSM; and receiving, from the enabling station, an updated WSM in a frame, wherein the frame is transmitted by the enabling station when the enabling station retrieves updated available channel information, wherein the enabling station has a database access capability, and the dependent station lacks database access capability, wherein the enabling station retrieves the available channel information from the database, and the dependent station retrieves the available channel information from the enabling station, and wherein the available channel information indicates frequencies permitted by the database, wherein the dependent station moves channels for operation if the dependent station is operating on a channel which becomes unavailable by the updated WSM, wherein the updated WSM is used for the dependent station to determine a white space operation state of the dependent station, and wherein, if the dependent station fails to retrieve the updated WSM within a redetermined time, the dependent station changes the white space operation state to unenabled and stops transmitting within the white space.