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Method for improving capacity of wireless positioning system on basis of arrival time

A wireless positioning system and time-of-arrival technology, applied in wireless communication, advanced technology, electrical components, etc., can solve the problem of increasing the positioning failure rate, and achieve the effect of reducing the probability of wireless signal collision, improving utilization, and low power consumption

Active Publication Date: 2015-05-13
申崇江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it can be seen that in the current time-of-arrival wireless positioning system, in order to ensure the success rate of positioning, its capacity cannot be made very large, otherwise the failure rate of positioning will be greatly increased

Method used

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  • Method for improving capacity of wireless positioning system on basis of arrival time
  • Method for improving capacity of wireless positioning system on basis of arrival time
  • Method for improving capacity of wireless positioning system on basis of arrival time

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] figure 2 The composition of the time-of-arrival-based wireless positioning system using the present invention is given. Such as figure 2 As shown, the time-of-arrival-based wireless positioning system adopting the present invention includes a server, a base station and an identification card. The identification card is fixed on the person or object to be positioned, and the server calculates the position coordinates of the identification card according to the distance from the identification card to multiple base stations to realize positioning.

[0024] The steps of the present invention are as follows:

[0025] 1) The identification card periodically transmits broadcast signals after power-on; if the identification card has entered the positioning area, the ordinary base station will forward the broadcast signal to the server through the routing base st...

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Abstract

The invention discloses a method for improving the capacity of a wireless positioning system on the basis of arrival time, and belongs to the technical field of the wireless positioning. The invention provides a method to enable each identification card to carry out a distance measurement operation only in the respective time slot and emit wireless signals. The method avoids midair collision of wireless signals, ensures the success rate and determinacy of system positioning, greatly improves the system capacity at the same time, and meanwhile realizes the low power consumption of each identification card.

Description

technical field [0001] The invention belongs to the technical field of wireless positioning, and more precisely relates to an improved method of a positioning system based on time-of-arrival ranging. Background technique [0002] As we all know, the need to know the precise location of specific people and valuables is enormous. The common way to solve this problem is to use three-point positioning, that is, by knowing the coordinates of three points, and measuring the distance from the target to the three points (that is, using distance measurement) or angle (that is, using angle measurement), and then using The geometric algorithm can get the position coordinates of the target. However, the angle-of-arrival (AOA) method in three-point positioning requires an expensive and intelligent array antenna system, which is rarely used in the high-precision positioning market. Ranging is commonly used in three-point positioning. [0003] Generally speaking, there are two methods f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00
CPCY02D30/70
Inventor 申崇江王洪勇张岗
Owner 申崇江