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A Method for Power Allocation in Wireless Cooperative Positioning Network

A collaborative positioning and wireless positioning technology, applied in the field of network communication, can solve problems such as poor versatility of the algorithm, waste of topology structure, poor positioning effect, etc., and achieve good robustness, improved resource utilization, and good positioning effect

Active Publication Date: 2021-06-22
NANJING TETRAELC ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the simple structure of the non-cooperative positioning network, the algorithm for solving it is generally relatively simple, and the algorithm has poor versatility, so it cannot be applied to large-scale cooperative positioning networks with complex topological structures.
The interference of other networks in the actual environment is not considered, and the robustness of positioning is poor, so it is doubtful whether it can be applied to actual deployment
Non-cooperative positioning networks are mostly used, which wastes the topology structure between target nodes, resulting in poor positioning effect

Method used

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  • A Method for Power Allocation in Wireless Cooperative Positioning Network
  • A Method for Power Allocation in Wireless Cooperative Positioning Network
  • A Method for Power Allocation in Wireless Cooperative Positioning Network

Examples

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Embodiment 1

[0076] In this example deploy a The square interfered cooperative wireless location network of m contains 3 anchor nodes, 3 interference nodes and 8 target nodes. The coordinates of the three anchor nodes are (0,0), (5,10), (10,0), and the positions of the three interference nodes are (0,10), (5,0), (10,10 ), the 8 target nodes are distributed in (3,3), (3,5), (3, 7), (5,3), (5,5), (5,7), (7,3) , (7,5). Transmit power of a single node , and is limited between 0 and 0.5, the total power of the target node , the total power of anchor nodes and the total power of the interfering node is set to 1, the threshold judgment condition Set as .

[0077] Here, the square positioning error of the 8 target node positions is used as the objective function, and each type of node is constrained by its total power to establish an optimization problem. When the number of iterations is 7 times, it can converge to the optimal solution, and the total square positioning error of...

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Abstract

The invention discloses a method for power allocation of a wireless cooperative positioning network. The key information of the received signal is extracted through K-L transformation and Schur complement, and then the mathematical form of the positioning error is calculated by using the Bai and Golub theorem according to the information, and the power allocation The problem is modeled as a nonlinear optimization problem, and then the specific iterative steps are deduced by using the Lagrange multiplier method and the particle swarm algorithm to obtain the power allocation under the highest positioning accuracy. The present invention performs joint power allocation to anchor nodes, target nodes, and interference nodes in a wireless collaborative positioning network, which can effectively improve the utilization rate of positioning system resources; in addition, considering the interference of other wireless communication networks in a complex environment, the wireless positioning is enhanced robustness.

Description

technical field [0001] The invention belongs to network communication technology, and in particular relates to a method for allocating power of a wireless collaborative positioning network. Background technique [0002] Wireless positioning systems often reduce system costs and improve positioning accuracy by optimizing positioning algorithms and improving network topology. However, optimizing the system's resource allocation can also improve the positioning accuracy of resource-constrained positioning systems. 1) Generally, people simply distribute the system resources to each node equally, without considering the different contributions of nodes in different positions to the positioning system, this approach does not achieve the optimal allocation of system resources; 2) At present Researches on non-cooperative positioning networks focus on non-cooperative positioning networks, which ignore the topology structure between target nodes. This kind of waste is unacceptable fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00H04W52/24H04W52/28
CPCH04W52/243H04W52/245H04W52/283H04W64/00
Inventor 张睿刘爽闵济海叶增军
Owner NANJING TETRAELC ELECTRONICS TECH CO LTD