Communication method and communication device of same-frequency networking wireless local area network

A wireless local area network and co-frequency networking technology, applied in the field of communication methods and equipment for co-frequency networking wireless local area networks, can solve problems such as affecting network performance and WLAN mutual interference, and achieve the effects of improving network performance and avoiding network conflicts.

CN104168657AActive Publication Date: 2014-11-26HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2014-11-26

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Abstract

Provided in an embodiment of the present invention are a communication method and device for a shared-frequency networking WLAN, used to monitor the CTS or RTS packet of a neighbor AP serving as a receiver or a sender in the WLAN; when detecting the CTS or RTS packet of the neighbor AP serving as the receiver or the sender in the WLAN, clearing a channel covered by the AP, and allowing a plurality of APs in the shared-frequency networking WLAN to form an omnidirectional group; when any AP in the omnidirectional group exchanges an RTS / CTS packet with an STA covered by the AP, other neighbor APs can also cooperatively clear the channels and suspend data communication within the coverage thereof, thus effectively avoiding network conflicts, and improving network performance of the shared-frequency networking WLAN.
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Description

technical field

[0001] The present invention relates to the technical field of wireless local area networks, in particular to a communication method and equipment for same-frequency wireless local area networks. Background technique

[0002] The channel in the wireless local area network (Wireless Local Access Network, WLAN) network is an exclusive channel, and a terminal (Station, STA) occupies the wireless channel when it communicates with the access point (Access Point, AP). Additional STAs must wait. 802.11 allows STAs to use RTS and CTS frames to clear the transmission area, that is, to inform other surrounding STAs not to send data at this moment before sending data. Such as figure 1 As shown, when device 1 sends data to device 2 in the WLAN, device 1 will send an RTS message to device 2, so that all other devices will not send data within a specified time after receiving the RTS. After device 2 receives the RTS, it will send another CTS message to ensure that all o...

Examples

Embodiment Construction

[0055] The specific implementation manners of a communication method and device for a same-frequency wireless local area network provided in the embodiments of the present invention will be described below with reference to the drawings in the description.

[0056] An embodiment of the present invention provides a communication method for a wireless local area network in a same-frequency network, such as Figure 4 As shown, it specifically includes the following steps:

[0057] S401. Each AP in the same same-frequency wireless local area network WLAN monitors the CTS or RTS message whose receiver or sender is a neighbor AP in the WLAN;

[0058] S402. When listening to a CTS or RTS message whose receiver or sender is a neighbor AP in the current WLAN, clear the channel in the coverage direction of itself.

[0059] In the above-mentioned communication method of the wireless local area network of the same-frequency network provided by the embodiment of the present invention, the...