Neighbor discovery method for dual directional antennas based on antenna rotational speed difference

A neighbor discovery and directional antenna technology, applied in wireless communication, electrical components, etc., to achieve the effect of fast antenna speed

Active Publication Date: 2018-06-22
BEIJING UNIV OF POSTS & TELECOMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to at least solve one of the deficiencies of the existing directional antenna neighbor node discovery methods, and provide an efficient and simple neighbor node discovery method

Method used

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  • Neighbor discovery method for dual directional antennas based on antenna rotational speed difference
  • Neighbor discovery method for dual directional antennas based on antenna rotational speed difference

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings. figure 1 It is the workflow diagram of the neighbor discovery node, including the first step, the second step, the third step, and the fifth step described below, figure 2 is the workflow diagram of idle nodes, including the fourth step described below.

[0022] The first step: communication initialization, the specific processing is: each node is equipped with the same directional antenna, and a unique identification ID is assigned to each node;

[0023] The second step: Node communication setting, the specific processing is as follows:

[0024] Step 201: the node calculates the number N of antenna scanning directions,

[0025] Step 202: Set a sequence number for each direction, the direction sequence number is set to 1, 2, 3, ..., N in a clockwise direction starting from the north direction, and the angle difference between the adjacent direction sequenc...

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Abstract

The invention discloses a double directional antenna neighbor discovering method based on antenna rotation speed difference. The method includes: equipping each node with the same direction antenna and allocating the unique identification ID for each node; calculating the number N of scanning directions; by one node preparing to transmit information, starting a neighbor discovering process, increasing the rotation speed of the self direction antenna to N times of that of an idle node, and transmitting neighbor discovering messages; by neighbor nodes receiving the neighbor discovering message, transmitting reply information; by the discovering node receiving the reply information, saving neighbor information and judging whether the discovering process is finished or not. The method has the advantages that the advantages of the directional antennas are fully utilized, the neighbor discovering node can rotate a circle to transmit the neighbor discovering messages to N directions when the directional antenna of one optional neighbor node points at the discovering node by increasing the rotation angle speed of the self direction antenna, and all the neighbor nodes can receive the neighbor discovering messages.

Description

technical field [0001] The invention relates to the technical field of wireless communication, more particularly, to a method for discovering neighbor nodes when using a directional antenna for communication. Background technique [0002] Antennas can be divided into omnidirectional antennas and directional antennas according to the signal coverage. [0003] The omnidirectional antenna has a 360° radio frequency range, and the omnidirectional antenna sends the same signal strength in all directions, so there is no need to point the antenna to the opposite end during the communication process. A directional antenna refers to an antenna that transmits and receives electromagnetic waves particularly strongly in one or several specific directions, while transmitting and receiving signals in other directions is zero or extremely small. Compared with omnidirectional antennas, directional antennas have the following advantages: (1) If the same power is used, directional antennas c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/24
CPCH04W40/246
Inventor 芦效峰
Owner BEIJING UNIV OF POSTS & TELECOMM
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