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Wireless LAN communication method and apparatus

a wireless lan and communication method technology, applied in wireless communication, multi-antenna systems, multi-plex communication, etc., can solve the problems of inability to interpret any data transmitted by the siso station, inability to receive the mimo data, and inability to transmit data to the siso station

Inactive Publication Date: 2006-08-17
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although use of WLANs may reduce performance in view of lower transmission rate and poorer stability as compared to wired LANs, WLANs have various advantages, including wireless networking capability, greater mobility and so on.
However, in a WLAN where an MIMO station and an SISO station coexist, the SISO station may not be able to interpret any data transmitted by the MIMO station.
However, the SISO station cannot receive the MIMO data and thus cannot perform a virtual carrier sensing operation.
Thus, the SISO station is in a disadvantageous position in channel contention with the first through third MIMO stations or other new MIMO stations.

Method used

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  • Wireless LAN communication method and apparatus
  • Wireless LAN communication method and apparatus
  • Wireless LAN communication method and apparatus

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Embodiment Construction

[0043] The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. It is assumed in this disclosure that an MIMO station has two input ports and two output ports. However, the present invention is also applicable to an MIMO station having more than two input ports and more than two output ports and to an SIMO station having a single input port and multiple output ports and an MISO station having multiple input ports and a single output port.

[0044]FIG. 4 is a diagram illustrating the formats of a data frame and an ACK frame according to an exemplary embodiment of the present invention.

[0045] In the present exemplary embodiment, an MIMO data frame is used to facilitate a physical carrier sensing operation, and an SISO ACK frame is used to facilitate a virtual carrier sensing operation even when the MIMO data frame is received.

[0046] The structure of a data frame will now be described ...

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Abstract

A wireless local area network (WLAN) communication method and apparatus are provided. The WLAN communication method includes allowing a receiving station to receive a multi input multi output (MIMO) frame, allowing the receiving station to determine whether the MIMO frame is erroneous and whether the MIMO frame is destined for the receiving station, allowing the receiving station to generate a single input single output (SISO) acknowledgement (ACK) frame if the MIMO frame is not erroneous and is destined for the receiving station, and allowing the receiving station to transmit the SISO ACK frame to a sending station that has transmitted the MIMO frame.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This is a continuation of application Ser. No. 11 / 199,118 filed Aug. 9, 2005. The entire disclosure of the prior application, application Ser. No. 11 / 199,118 is considered part of the disclosure of the accompanying continuation application and is hereby incorporated by reference.[0002] This application claims priority from Korean Patent Application No. 10-2004-0070931 filed on Sep. 6, 2004 in the Korean Intellectual Property Office, and U.S. Provisional Patent Application No. 60 / 601,135 filed on Aug. 13, 2004 in the United States Patent and Trademark Office, the disclosures of which are incorporated herein by reference in their entirety. BACKGROUND OF THE INVENTION [0003] 1. Field of the Invention [0004] Apparatuses and methods consistent with the present invention relate to wireless local area network (LAN) communications, and more particularly, to wireless LAN (WLAN) communications using an improved carrier sensing mechanism. [0005] 2...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04B7/212H04B7/02H04J99/00H04W28/04H04W74/08H04W84/12
CPCH04B7/02H04L1/16H04L1/1607H04L1/1671H04L1/1829H04L1/188H04L27/2602H04L2001/125H04W28/04H04W84/12H04L5/023H04B7/04H04W74/08
Inventor YANG, CHIL-YOULKWON, CHANG-YEULKIM, JAE-HWAROH, DONG-HWI
Owner SAMSUNG ELECTRONICS CO LTD