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Method for positioning radio self-organized network nodes based on homogeneous coordinate

A technology of wireless self-organization and homogeneous coordinates, which is applied in wireless communication, network topology, electrical components, etc., can solve problems such as inversion and divergence of ranging methods, so as to improve the scope of application, reduce communication traffic and energy consumption, and improve The effect of positioning accuracy

Inactive Publication Date: 2012-10-03
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0012] The purpose of the present invention is to design a wireless self-organizing network node positioning method based on homogeneous coordinates, which uses the wireless self-organizing network positioning method when there is no beacon node, and solves the ubiquitous reverse divergence problem of ranging methods. and achieve precise physical positioning

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  • Method for positioning radio self-organized network nodes based on homogeneous coordinate
  • Method for positioning radio self-organized network nodes based on homogeneous coordinate
  • Method for positioning radio self-organized network nodes based on homogeneous coordinate

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0043] figure 2 An example of an embodiment scenario where the present invention is applied to a wireless ad-hoc network is given. Due to space limitations, figure 2 It can also be regarded as showing only a small part of the wireless ad hoc network, but it does not affect the understanding of the present invention, nor does it affect the implementation of the present invention in a wireless ad hoc network with more nodes. In the figure, o is the node serving as the origin of the global coordinate system GCS, and the rest a~z are unknown nodes randomly scattered, and the node communication radius is 2.5, figure 2 The coverage area of ​​the three nodes d, j and l is shown, and the nodes in the coverage area can be regarded as their respective adjacent nodes. Without loss of generality, o can be chosen as the origin of the global coordinate system GC...

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Abstract

The invention discloses a method for positioning radio self-organized network nodes based on a homogeneous coordinate. The method comprises the following steps of: initializing a radio self-organized network system, wherein each node finds out an adjacent node and measures the distance and angle information of the adjacent node; constructing a local plane rectangular coordinate system of each node, wherein when viewed from above, all coordinate systems always conform to right-hand rule; calculating the local coordinates of the adjacent node; solving a coordinate system transformational matrix based on the homogeneous coordinate by the adjacent node, so that the node relative to a local coordinate system can calculate the coordinate relative to another local coordinate system through the transformation of the transformational matrix; and selecting an original point of a global coordinate system, wherein each node calculates a global physical coordinate through the recursion transmission of the coordinate system transformational matrix. The method disclosed by the invention takes full advantage of self distance and angle measurement capacities of the radio nodes, and can determine the physical position of each unknown node in the radio self-organized network where beacon nodes are not suitable for being deployed.

Description

technical field [0001] The invention relates to the field of wireless network and mobile computing, in particular to a wireless self-organizing network node positioning method based on homogeneous coordinates. Background technique [0002] Wireless ad hoc network is a multi-hop temporary autonomous system with distributed control and centerless architecture, which can maintain the networking and communication capabilities of the remaining nodes after some network nodes fail. Such networks have a wide range of applications and are complex. For example, wireless sensor networks are a major application field of wireless ad hoc network technology. In addition to the traditional issues that need to be discussed in wireless networks, such as channel access and control, multi-hop routing selection and optimization, security risks, etc., wireless ad hoc networks are also facing issues that need to be researched and solved due to their characteristics. The location of distributed no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00H04W84/18
Inventor 张远贾忠田周劲韩春燕陈月辉丁晓凤
Owner UNIV OF JINAN
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