METHOD AND APPARATUS FOR ACQUIRING AVAILABLE CHANNEL INFORMATION IN A WIRELESS LOCAL AREA NETWORK SYSTEM
0 Assignments
0 Petitions
Accused Products
Abstract
Methods and apparatuses for acquiring/providing available channel information using Generic Advertisement Service (GAS) protocol in a wireless local area network (WLAN) are disclosed. AP (Access Point) station has a capability to acquire information for available channels from a database using a specific protocol related to an operation within the White Space (e.g. Access Network Query Protocol (ANQP)). And, non-AP station can retrieve the information for available channels by transmitting a Generic Advertisement Service (GAS) initial request frame to the AP station, wherein the GAS initial request frame comprises an Advertisement Protocol Element whose element ID indicates the specific protocol, and receiving a GAS initial response frame comprising a White Space Map (WSM) the specific protocol. The WSM comprises one or more white space channel units, and each of the white space channel units comprises a channel number field indicating one of the available channels and a power constraint field indicating a maximum allowable power on the indicated channel.
23 Citations
29 Claims
-
1-18. -18. (canceled)
-
19. A method for a first station to provide channel availability information to a second station, the method comprising:
-
receiving, by the first station from the second station, a request frame for requesting the channel availability information, wherein the request frame includes a generic advertisement service (GAS) protocol element; accessing a database to obtain information on available frequencies; and transmitting, by the first station to the second station, a response frame for responding with the channel availability information, wherein the response frame includes the GAS protocol element, wherein the GAS protocol element included in the response frame includes a white space map (WSM) including the information on the available frequencies. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
-
-
25-1. The method of claim 19, wherein the GAS protocol element is a Channel Availability Query Registered Location Query Protocol (RLQP) element.
-
27. A method for a second station to obtain channel availability information from a first station, the method comprising:
-
transmitting, by the second station to the first station, a request frame for requesting the channel availability information, wherein the request frame includes a generic advertisement service (GAS) protocol element; receiving, by the second station from the first station, a response frame for responding with the channel availability information, wherein the response frame includes the GAS protocol element, wherein the GAS protocol element included in the response frame includes a white space map (WSM) including the information on the available frequencies, wherein the first station accesses a database to obtain information on available frequencies.
-
-
28. An apparatus of a first station to provide channel availability information, the apparatus comprising:
-
a transceiver; and a processor, wherein the processor is configured to; control the transceiver to receive, from a second station, a request frame for requesting the channel availability information, wherein the request frame includes a generic advertisement service (GAS) protocol element; access a database to obtain information on available frequencies; and control the transceiver to transmit, to the second station, a response frame for responding with the channel availability information, wherein the response frame includes the GAS protocol element, wherein the GAS protocol element included in the response frame includes a white space map (WSM) including the information on the available frequencies.
-
-
29. An apparatus of a second station to obtain channel availability information from a first station, the apparatus comprising:
-
a transceiver; and a processor, wherein the processor is configured to control the transceiver to; transmit, to the first station, a request frame for requesting the channel availability information, wherein the request frame includes a generic advertisement service (GAS) protocol element; receive, from the first station, a response frame for responding with the channel availability information, wherein the response frame includes the GAS protocol element, wherein the GAS protocol element included in the response frame includes a white space map (WSM) including the information on the available frequencies, wherein the first station accesses a database to obtain information on available frequencies.
-
Specification