Method and device for solving the problem of hidden nodes in local area network

A technology of hidden nodes and wireless local area networks, applied in the field of solving hidden nodes in wireless local area networks, can solve problems such as low network performance, and achieve the effect of improving performance and reducing the probability of conflict

CN103533653AInactive Publication Date: 2014-01-22NEW H3C TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-01-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method and a device for solving the problem of hidden nodes in local area network. The method comprises the steps of: setting a virtual independent AP for each related mobile terminal STA; and sending a Beacon frame to each mobile terminal STA individually, wherein a Quiet information unit is carried by the Beacon frame of each STA, thereby enabling different mobile terminal STAs to remain silent in different time ranges of one Beacon cycle, reducing the number of the mobile terminal STAs accessing the AP channel simultaneously, reducing the channel access conflict probability among the STAs, and improving the whole performance of the wireless local area network.
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Description

technical field

[0001] The invention relates to the technical field of wireless communication, in particular to a method and a device for solving hidden nodes in a wireless local area network. Background technique

[0002] Wireless local area network (hereinafter referred to as WLAN network) is widely used due to its characteristics of easy deployment and mobility. Not only enterprise networks need to deploy WLAN, urban wireless networks, education, personal office, etc., use WLAN networks everywhere.

[0003] However, in some application scenarios, there may be a phenomenon that STAs of mobile terminals hide from each other. For example, WLAN is deployed in an outdoor working environment, and its mobile terminal STAs are distributed within a range of hundreds of meters or even kilometers around the access point AP. Access point AP wireless signal dedicated equipment, etc.), it can even be distributed within a few kilometers around the AP. In such an environment, the mobi...

Examples

Embodiment Construction

[0020] In order to achieve the purpose of the present invention, the present invention provides a solution, which virtualizes an independent AP for each associated mobile terminal STA, and sends Beacon frames to the associated mobile terminal STA through the virtual AP, in which The above-mentioned Beacon frame carries different Quiet (quiet) information, so that different mobile terminal STAs can keep silent in different time ranges of a Beacon cycle (also called Beacon frame time interval), so that mobile terminals that may access the AP channel at the same time The number of terminal STAs is reduced, thereby effectively reducing the channel access conflict probability among mobile terminal STAs, and improving the overall performance of the wireless local area network.

[0021] The technical solution of the present invention will be described in detail below in conjunction with the examples. Such as figure 1 As shown, it is a flowchart of a method for solving hidden nodes i...