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Clear channel assessment method, node, station and access point

A technology of idle channel evaluation and channel evaluation, applied in the field of communication, can solve the problems of inaccurate channel evaluation, low data transmission efficiency of WLAN system, low network throughput, etc.

Active Publication Date: 2017-06-20
HUAWEI TECH CO LTD
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Problems solved by technology

For a station in a BSS in the OBSS, the signal on a channel may be interfered by stations in other BSSs in the OBSS or access points (Access Point, AP for short), if the station in the BSS is still based on The channel threshold in the one BSS is used for channel assessment, which can lead to inaccurate channel assessment, resulting in low data transmission efficiency and low network throughput in the WLAN system

Method used

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  • Clear channel assessment method, node, station and access point
  • Clear channel assessment method, node, station and access point
  • Clear channel assessment method, node, station and access point

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Embodiment Construction

[0165] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0166] The free channel assessment method, node, station and access point provided by the embodiments of the present invention are applicable to a scenario where coverage areas of different BSSs overlap to form an OBSS in a WLAN system. Each BSS may include at least one station and one AP. The WLAN system applicable to various embodiments of...

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Abstract

The embodiment of the present invention provides a clear channel assessment method, a node, a station and an access point. The clear channel assessment method of the present invention comprises the steps of using the node to determine a clear channel assessment threshold value according to the overlap number of the overlap basic service sets (OBSS); using the node to assess a channel according to the clear channel assessment threshold value. According to the embodiment of the present invention, the data transmission efficiency in a wireless local area network (WLAN) system can be improved, and the throughput of a network is improved.

Description

technical field [0001] The embodiments of the present invention relate to communication technologies, and in particular to a method for assessing an idle channel, a node, a station, and an access point. Background technique [0002] A wireless local area network (WLAN for short) technology has become one of the main network access technologies due to its advantages of high speed and low cost. [0003] In a traditional WLAN system, a station (STAtion, STA for short) in a Basic Service Set (BSS for short) can obtain the channel by competing with other stations when a channel is idle. The transmission opportunity of the station on the channel, and then the data transmission on the channel, so as to realize the collision avoidance (Collision Avoidance, CA for short) among the stations in the one BSS. In the new-generation WLAN system, when a channel is idle, the site can perform resource multiplexing on the channel with other sites through Orthogonal Frequency Division Multiple...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04W74/08
CPCH04W24/02H04W74/08
Inventor 廖湘柏刘应状罗俊
Owner HUAWEI TECH CO LTD
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