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Directional antenna-based multi-rate multi-path route optimization method

A technology of directional antenna and optimization method, applied in wireless communication, electrical components, etc., can solve the problem that directional antenna cannot find the best path, achieve high throughput and reduce average delay

Inactive Publication Date: 2013-11-20
SHANGHAI JIAO TONG UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology uses flooding to find multiple paths, and cannot find the best path in a wireless network with directional antennas.

Method used

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  • Directional antenna-based multi-rate multi-path route optimization method
  • Directional antenna-based multi-rate multi-path route optimization method
  • Directional antenna-based multi-rate multi-path route optimization method

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Experimental program
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Effect test

Embodiment 1

[0020] Such as figure 1 As shown, this embodiment includes the following steps:

[0021] Step 1: Create an array of transmission information, the specific steps include:

[0022] 1.1) Rotate the directional antenna by 360° spherical surface, and send packets at different rates in each direction, and determine the correct transmission rate from the node to the neighbor node by the ratio of the ACK received from the neighbor node to the number of data packets sent by the node.

[0023] 1.2) Set a threshold and eliminate neighbor nodes whose correct transmission probability is lower than the threshold, and obtain the best forwarding node set at this rate in this direction.

[0024] 1.3) Merge the best forwarding node set according to the measurement results and get the transmission information array.

[0025] The array of transfer information Among them: J indicates that node i is in the direction and the optimal forwarding node set at rate r; due to the direction The con...

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Abstract

The invention discloses a directional antenna-based multi-rate multi-path route optimization method in the technical field of wireless network. The method comprises the following steps: obtaining higher end-to-end throughput by selecting a directional antenna forward direction; selecting a forward rate for each node provided with a directional antenna so as to obtain higher end-to-end throughput at the same time; and finally selecting a forward set for each node provided with the directional antenna so as to obtain higher end-to-end throughput by using a multi-path route mode. According to the method, the problems of selection of the direction of the directional antenna in multi-path routing and selection of the optimal transmission rate to obtain higher end-to-end throughput are effectively solved. The multi-path route mode obtained by a DSMA (Multi-rate Any-path Routing with Directional Antennas) algorithm is optimized. Compared with a single-rate multi-path route mode, the DSMA has the advantage that higher end-to-end throughput can be obtained. The end-to-end average time delay can be reduced.

Description

technical field [0001] The present invention relates to a method in the field of wireless network technology, in particular to a multi-rate multi-path routing optimization method based on directional antennas, which is applicable to a wireless network environment with packet loss rate and can be realized by selecting the forwarding direction of directional antennas. Background technique [0002] Different from the traditional single-path wireless routing mechanism, the multi-path routing mechanism (MultirateAnypath Routing with Directional Antennas, DSMA) utilizes the broadcast characteristics of the wireless communication medium, and allows each node to select several nodes as the forwarding set, so that all the nodes in the forwarding set participate in the forwarding set. Routing process to achieve improved end-to-end throughput. Although multipath routing mechanisms have been proposed and studied for a long time, none of the existing multipath mechanisms can be used in s...

Claims

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Application Information

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IPC IPC(8): H04W40/06
Inventor 吴帆高勋冯平陈贵海
Owner SHANGHAI JIAO TONG UNIV
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