Patent ID: 8792466
Filing Date: 2014-07-29
Classification: H04W

Abstract:
1. A method of transmitting a white space map (WSM) from a first station to a second station in a regulatory domain where a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN), the method comprising: obtaining, at the first station from a regulatory database system, available frequency information and maximum allowed transmission power information for available frequencies, wherein the available frequency information indicates frequencies permitted to operate together in the WLAN, by the regulatory database system; and transmitting, from the first station, the WSM to the second station such that the second station operates using one or more channels within the available frequencies identified by the WSM, wherein the WSM comprises a channel number field and a maximum power level field, wherein the channel number field indicates the available frequency information and the maximum power level field indicates the maximum allowed transmission power information for the available frequencies, wherein the WSM further comprises a type field indicating whether the available frequency information is a partial channel list or a full channel list, and a map version field indicating a version of the WSM, wherein a WSM having the most recent version is used by the second station, and wherein the second station, receiving multiple WSMs with the same value of the map version fields and the type fields indicating the partial channel list, constructs a whole channel list using the received multiple WSMs.