Method and apparatus of transmitting a white space map information in a wireless local area network system

• US 8,880,086 B2
• Filed: 02/09/2011
• Issued: 11/04/2014
• Est. Priority Date: 03/28/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Jihyun, Kim, Eunsun, Seok, Yongho
• Primary Examiner(s): Lee, John J
• Application Number:
  US13/395,573
• Publication Number:
  US 20120184318A1
• Time in Patent Office: 1,364 Days
• Field of Search: 455/456.3, 455/456.1, 455/515, 455/434, 455/509, 455/452.1, 455/67.13, 455/454, 455/451, 455/67.11
• US Class Current: 455/452.1
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/27 between access points
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A method of transmitting a White Space Map information in a wireless local area network system (WLAN) is disclosed. A method of transmitting a white space map information 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) comprises acquiring a first list of available channels at each location of a plurality of locations from a regulatory database; determining a second list of available channels at a white space zone (WSZ) using the first list of available channels at each location of a plurality of locations; and transmitting, to the second station, one of a beacon frame, a probe response frame and a white space map announcement frame comprising a white space map (WSM) element, the WSM element including information of the WSZ and the second list of available channels, wherein the WSZ is a geographical area in which common available channels are set.

Claims

1. A method for a station (STA) to perform a channel availability query procedure in a wireless communication system, the method comprising:

transmitting, at a first STA corresponding to a channel availability query requesting STA, a first message to a second STA supporting the channel availability query process, wherein the second STA corresponds to a channel availability query responding STA, wherein the first message comprises device location information of one or more locations for the channel availability query; and

receiving, at the first STA from the second STA, a second message comprising channel availability information, wherein when the device location information of the first message is for multiple locations within an area, the channel availability information is commonly applicable to the multiple locations within the area.

2. The method of claim 1, wherein the device location information includes a registered location field indicating the one or more locations, and a range field indicating a range of the one or more locations.

3. The method of claim 1, wherein the device location information comprises location information expressed as a three-dimensional coordinate.

4. The method of claim 1, wherein the second station is an enabling station having an authority to control an operation of a dependent station.

5. The method of claim 1, wherein the first station is a dependent station operating under a control of an enabling station.

6. An apparatus operating as a first station (STA) performing a channel query procedure in a wireless communication system, the apparatus comprising:

a transceiver configured to transmit, at the first STA corresponding to a channel availability query requesting STA, a first message to a second STA supporting the channel availability query process, wherein the second STA corresponds to a channel availability query responding STA, wherein the first message comprises device location information of one or more locations for the channel availability query; and

to receive, from the second STA, a second message comprising channel availability information, wherein when the device location information of the first message is for multiple locations within an area, the channel availability information is commonly applicable to the multiple locations within the area; and

a processor configured to control the transceiver.

7. The apparatus of claim 6, wherein the device location information includes a registered location field indicating the one or more locations, and a range field indicating a range of the one or more locations.

8. The apparatus of claim 6, wherein the device location information comprises location information expressed as a three-dimensional coordinate.

9. A method for a station (STA) to perform a channel availability query procedure in a wireless communication system, the method comprising:

receiving, from a first STA corresponding to a channel availability query requesting STA, a first message at a second STA supporting the channel availability query process, wherein the second STA corresponds to a channel availability query responding STA, wherein the first message comprises device location information of one or more locations for the channel availability query; and

transmitting, to the first STA from the second STA, a second message comprising channel availability information, wherein when the device location information of the first message is for multiple locations within an area, the channel availability information is commonly applicable to the multiple locations within the area.

10. An apparatus operating as a second station (STA) performing a channel availability query procedure in a wireless communication system, the apparatus comprising:

a transceiver configured to receive, from a first STA corresponding to a channel availability query requesting STA, a first message at the second STA supporting the channel availability query process, wherein the second STA corresponds to a channel availability query responding STA, wherein the first message comprises device location information of one or more locations for the channel availability query; and

to transmit, to the first STA from the second STA, a second message comprising channel availability information, wherein when the device location information of the first message is for multiple locations within an area, the channel availability information is commonly applicable to the multiple locations within the area; and

a processor configured to control the transceiver.