METHOD AND APPARATUS FOR SPACE DIVISION MULTIPLE ACCESS FOR WIRELESS LOCAL AREA NETWORK SYSTEM

• US 20140177616A1
• Filed: 02/06/2014
• Published: 06/26/2014
• Est. Priority Date: 05/22/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: SEOK, Yong Ho
• Granted Patent: US 9,161,260 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04W 28/0236 radio quality, e.g. interference, losses or delay
• CPC Class Codes: H04W 28/0268 using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] negotiating SLA or negotiating QoS H04W28/24
• CPC Class Codes: H04W 52/58 Format of the TPC bits
• CPC Class Codes: H04W 72/046 the resource being in the space domain, e.g. beams
• CPC Class Codes: H04W 74/004 in the uplink, i.e. towards network
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A space division multiple access (SDMA) method is provided. The method may be performed by a station (STA), in a wireless local area network (WLAN) system. The method includes overhearing a third transmission response message transmitted by an access point (AP), and determining whether to access a channel on the basis of criteria information included in the third transmission response message.

Claims

1. A method for performing channel access in a wireless local area network, the method comprising:

transmitting, by an initiating station, a request message for requesting a channel access to an access point, the request message including information about an access category indicating a quality of service for an uplink traffic that the initiating station wants to send; and

receiving, by the initiating station, a response message as a response to the request message from the access point, the response message including information about the access category in the request message.

2. The method of claim 1, further comprising:

transmitting, by the initiating station, a first data frame having the access category to the access point.

3. The method of claim 2, further comprising:

transmitting, by a station, a second data frame having the access category to the access point,

wherein the station overhears the response message to obtain the information about the access category.

4. The method of claim 3, wherein the station does not send a data frame not having the access category.

5. The method of claim 1, wherein the request message includes a request-to-send (RTS) frame and the response message includes a clear-to-send (CTS) frame.

6. A device for use in a wireless local area network, the device comprising:

a processor; and

a memory operatively coupled with the processor and storing instructions that when executed by the processor causes to the device to;

transmit a request message for requesting a channel access to an access point, the request message including information about an access category indicating a quality of service for an uplink traffic that the device wants to send;

receive a response message as a response to the request message from the access point, the response message including information about the access category in the request message.