Method and system for optimizing channel access in a wireless local area network

• US 10,129,896 B2
• Filed: 05/19/2016
• Issued: 11/13/2018
• Est. Priority Date: 11/04/2015
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kherani, Arzad Alam, Manavalan, Karthik Rangaraj, Azad, Amar Prakash
• Primary Examiner(s): Hoang, Thai
• Application Number:
  US15/159,713
• Publication Number:
  US 20170127424A1
• Time in Patent Office: 908 Days
• Field of Search: 370276-281, 370294-295, 370329-330, 370335-338, 370341-345
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/54 based on quality criteria
• CPC Class Codes: H04W 74/0816 with collision avoidance
• CPC Class Codes: H04W 74/0825 with collision detection
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: H04W 92/20 between access points

Abstract

A method and apparatus for optimizing channel access by an access point (AP) in a wireless local area network is provided, the method comprises transmitting first information to a station, and receiving second information from the station while transmitting the first information to the station, wherein the first information and the second information includes at least one of a request to send (RTS) frame, clear to send (CTS) frame, acknowledgement information, and data, respectively.

Claims

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

receiving first information from an access point (AP); and

transmitting second information to the AP while receiving the first information from the AP,

wherein the first information and the second information include at least one of a request to send (RTS) frame, a clear to send (CTS) frame, acknowledgement information, or data.

2. The method of claim 1, wherein the station operates in a simultaneous transmission and reception (STAR) mode.

3. The method of claim 2, wherein the station receives the RTS frame from the AP while transmitting the acknowledgement information in the STAR mode.

4. The method of claim 1, further comprising:

transmitting the RTS frame including a preamble and payload data to the AP when the AP is in communication with another station; and

detecting a collision of the RTS frame when the preamble of the RTS frame is transmitted.

5. The method of claim 4, further comprising:

performing backing off transmission of the payload data in the RTS frame;

determining whether the communication between the AP and the other station is successful; and

aggressively transmitting the RTS frame if it is determined that the communication is successful.

6. The method of claim 5, wherein the station aggressively transmits the RTS frame to the AP while the AP receives the data from the other station.

7. A station in a wireless local area network, the station comprising:

a transceiver configured to transmit and receive information; and

a controller configured to control;

to receive first information from an access point (AP); and

to transmit second information to the AP while receiving the first information from the AP,

wherein the first information and the second information include at least one of a request to send (RTS) frame, a clear to send (CTS) frame, acknowledgement information, or data.

8. The station of claim 7, wherein the controller is configured to operate in a simultaneous transmission and reception (STAR) mode.

9. The station of claim 8, wherein the controller is further configured to control to receive the RTS frame from the AP while transmitting the acknowledgement information in the STAR mode.

10. The station of claim 7, wherein the controller is further configured to control:

to transmit the RTS frame including a preamble and payload data to the AP when the AP is in communication with another station, and

to detect collision of the RTS frame when the preamble of the RTS frame is transmitted.

11. The station of claim 10, wherein the controller is further configured to control:

to back off transmission of the payload data in the RTS frame;

to determine whether the communication between the AP and the other station is successful; and

to aggressively transmit the RTS frame if it is determined that the communication is successful.

12. The station of claim 11, wherein the controller is further configured to control to aggressively transmit the RTS frame to the AP while the AP receives the data from the other station.