Method and apparatus for space division multiple access for wireless local area network system

• US 9,603,148 B2
• Filed: 09/08/2015
• Issued: 03/21/2017
• Est. Priority Date: 05/22/2009
• Status: Expired due to Term

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seok, Yong Ho
• Primary Examiner(s): Qureshi, Afsar M
• Application Number:
  US14/847,879
• Publication Number:
  US 20150382338A1
• Time in Patent Office: 560 Days
• Field of Search: 370/329, 370/338
• US Class Current: 1/1
• 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 a channel access in a wireless local area network, the method comprising:

receiving, by an access point (AP), a plurality of status messages from a plurality of stations, each status message includes about an access category (AC) indicating a quality of service for an uplink traffic that a corresponding station wants to send;

transmitting, by the AP, an access message to the plurality of stations for requesting the plurality of stations to participate uplink transmissions; and

receiving, by the AP, a plurality of data frames from the plurality of stations,

wherein the access message includes information about a plurality of ACs for the plurality of stations, each AC indicating a recommended quality of service for an uplink traffic that is to be sent by a corresponding station.

2. The method of claim 1, wherein the access message further includes information about a plurality of target received signal powers for the plurality of stations.

3. The method of claim 1, wherein each AC in the access message is represented as two bits.

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

a transceiver configured to transmit and receive radio signals; and

a processor operatively coupled with the transceiver and configured to;

instruct the transceiver to receive a plurality of status messages from a plurality of stations, each status message includes about an access category (AC) indicating a quality of service for an uplink traffic that a corresponding station wants to send;

instruct the transceiver to transmit an access message to the plurality of stations for requesting the plurality of stations to participate uplink transmissions; and

instruct the transceiver to receive a plurality of data frames from the plurality of stations,

wherein the access message includes information about a plurality of ACs for the plurality of stations, each AC indicating a recommended quality of service for an uplink traffic that is to be sent by a corresponding station.

5. The device of claim 4, wherein the access message further includes information about a plurality of target received signal powers for the plurality of stations.

6. The device of claim 4, wherein each AC in the access message is represented as two bits.