Unknown Node Location Method Based on Cooperative Anchor Node Adaptive Movement
An unknown node and positioning method technology, which is applied in the field of adaptive mobility of anchor nodes based on cooperation, can solve the problems of low utilization rate of anchor nodes, waste of energy and resources, and high distribution density of anchor nodes, so as to reduce positioning accuracy and improve utilization efficiency and reduce energy consumption
Active Publication Date: 2019-03-08
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology
The anchor node path planning scheme based on node benefit maximization is a rare path planning method that can be applied to mobile unknown nodes. This method realizes the adaptive movement of anchor nodes and solves the problem of energy and resource waste caused by random movement of anchor nodes. However, it is still inevitable to encounter the problem of high distribution density of anchor nodes and low utilization of anchor nodes
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[0057] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.
[0058] 1) A node positioning method based on anchor nodes for adaptive navigation. Its implementation steps are as follows:
[0059] Step 1: Construct the bounding box of anchor node A in the anchor node pair where the bounding box Indicates the estimated area of anchor node A's next moment position.
[0060] Randomly distribute n unknown nodes in the perception area, and m pairs of anchor nodes, each pair of anchor nodes includes an anchor node A and an anchor node B, respectively denoted as
[0061] Take the i-th pair of anchor nodes As an example, explain the construction of the bounding box of the anchor node A: the position of the anchor node A is known at the current moment, which is Its...
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The invention requests to protect an unknown node positioning method based on cooperative anchor node self-adaptive movement. The method comprises the steps that: anchor node pairs are randomly arranged in a sensing area in an anchor node pair mode; the anchor node cooperated with each other to determine a movement path in a self-adaptive manner so as to enable that the contribute of the movement position at each moment to the positioning of an unknown node is largest; and the unknown node calculates the coordinate of itself with a non-ranging method according to anchor node position information. The method is applied to a mobile sensor network, the mutual cooperation among the anchor nodes is utilized to enable the anchor nodes to move in the anchor node pair mode, so that at least two anchor node close to the unknown node is ensured, the positioning precision is improved, the usage number of the anchor nodes is effectively reduced, and the utilization rate of the anchor nodes is improved.
Description
technical field [0001] The invention relates to a positioning technology of an unknown node in a mobile sensor network, in particular to a cooperation-based self-adaptive mobile method for an anchor node. Background technique [0002] Under the trend of rapid development of mobile communication technology, various applications based on mobile terminals are flourishing. Location Based Services (LBS) is becoming more and more important in daily life, especially in the complex and changeable positioning environment, users have higher and higher requirements for positioning accuracy. [0003] The positioning method based on Monte Carlo basically solves the positioning problem of unknown nodes in the dynamic network. However, in order to meet the positioning accuracy requirements in the positioning process, a large number of anchor nodes need to be distributed in the sensing area, and the greater the anchor node density, the higher the positioning accuracy. , however, the moveme...
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IPC IPC(8): H04W64/00
CPCH04W64/003
Inventor 周非刘文楠范馨月陈舒王冠
Owner CHONGQING UNIV OF POSTS & TELECOMM