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Information sending and receiving method and device

A technology for information sending and receiving equipment, which is applied in the field of information sending and receiving methods and devices, and can solve the problems of long time spent by WLAN equipment

Inactive Publication Date: 2016-02-03
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Embodiments of the present invention provide an information processing method and device, which are used to solve the technical problem that WLAN equipment takes a long time when performing radar detection

Method used

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  • Information sending and receiving method and device
  • Information sending and receiving method and device
  • Information sending and receiving method and device

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Embodiment Construction

[0066] An embodiment of the present invention provides a method for sending information. The method includes: an access point (English: accesspoint, abbreviated: AP) performs CAC on a first channel to determine whether there is a radar signal on the first channel; if the If there is a radar signal on the first channel, the AP sends a CAC result to the wireless local area network control device or to other APs, where the CAC result includes the identifier of the first channel.

[0067] In this embodiment of the present invention, if the AP detects and determines that there is a radar signal on the first channel, it may send the CAC result to the wireless local area network control device or other AP, and the wireless local area network control device or the other AP After receiving the CAC result, it can be known that there is a radar signal on the first channel, so that if the wireless local area network control device or the other AP needs to select a new channel, the first ch...

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Abstract

The invention discloses an information sending method used for solving the technical problem that a WLAN (Wireless Local Area Network) device takes a relatively long time to perform radar detection. The information sending method comprises the steps that an AP performs CAC (Channel Availability Check) for a first channel to determine whether a radar signal exists in the first channel; and if the radar signal exists in the first channel, the AP sends a CAC result to a WLAN control device or other AP, wherein the CAC result comprises the identifier of the first channel. The invention also discloses an information receiving method and corresponding devices.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and device for sending and receiving information Background technique [0002] There are many channels in the 5G hertz (English: hertz, symbol: Hz) frequency band of wireless local area network (English: wireless local area network, abbreviation: WLAN). In the 5GHz band, interference includes radar signals. Different countries have different regulations. For some countries, in the channels of the 5GHz frequency band, some channels do not have radar signals, while some channels have radar signals. For channels where radar signals may exist, according to regulations of some countries, a dynamic frequency selection (English: Dynamic Frequency Selection, abbreviation: DFS) function needs to be implemented to avoid interference with radar or interference from radar. Hereinafter, such channels are referred to as channels requiring DFS. [0003] When a WLAN device uses ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00H04W84/12
Inventor 王云贵
Owner HUAWEI TECH CO LTD
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