Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Circular polarized wave positioning method applicable to TD-SCDMA network

A positioning method, circularly polarized wave technology, applied in the communication between multiple stations, electrical components, radio/induction link selection and arrangement, etc., can solve the problems of unstable system performance, low positioning accuracy, installation and maintenance. High cost and other problems, to achieve the effects of reducing the impact of environmental changes, high positioning stability, and convenient installation and maintenance

Inactive Publication Date: 2007-05-23
CHONGQING UNIV OF POSTS & TELECOMM +1
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the widely used GPS positioning technology cannot be applied indoors because the satellite signal cannot be received or the satellite signal is too weak. The technologies such as CELL-ID and TDOA that can be adopted for indoor positioning cannot meet the needs of users due to the low positioning accuracy.
When the positioning method based on wireless local area network is implemented, a large number of third-party devices need to be installed, and the cost of installation and maintenance is very expensive. Moreover, the technical environment has a great impact, and the system performance is very unstable, which seriously affects the further improvement of positioning accuracy.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Circular polarized wave positioning method applicable to TD-SCDMA network
  • Circular polarized wave positioning method applicable to TD-SCDMA network
  • Circular polarized wave positioning method applicable to TD-SCDMA network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] As shown in Figure 1, the service architecture when the polarized wave indoor positioning system is used independently is described. The launch point and reference point for emitting circularly polarized waves are laid indoors. When the system is used independently, the launch point emits circularly polarized waves. The mobile terminal uses wireless communication methods such as Bluetooth or wireless LAN to control the launch point to emit different frequencies. The electromagnetic wave, by distinguishing the different frequencies of the electromagnetic wave, or the code division multiplexing of the single-frequency signal emitted by the transmitting point, etc. to distinguish each transmitting point; the mobile terminal is equipped with a polarized antenna that matches the transmitting point and ensures that it can be used anywhere in the room Receive signals transmitted by at least 3 transmitting points, and at the same time, the mobile terminal integrates location-bas...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an indoor positioning method based on electromagnetic wave polarization technique, wherein the invention arranges some emitters indoor, to radiate polarized electromagnetic wave, mobile phone or other mobile terminals via polarized antennas can receive the direct signal but shield the energy of reflective signals, to restrain the condition effect; via the energy of direct signals, it can build signal strength database, when it can receive three emitters, it can accurately position indoor. The inventive system can be used in indoor position service and based on other wireless communication networks to realize seamless position, combined with outdoor position technique.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to the wireless positioning technology utilizing the polarization properties of electromagnetic waves. Background technique [0002] At present, the widely used GPS positioning technology cannot be applied indoors because the satellite signal is not received or the satellite signal is too weak. The technologies such as CELL-ID and TDOA that can be adopted for indoor positioning cannot meet the needs of users due to the low positioning accuracy. When the positioning method based on wireless local area network is implemented, a large number of third-party devices need to be installed, and the cost of installation and maintenance is very expensive. Moreover, the technical environment has a great impact, and the system performance is very unstable, which seriously affects the further improvement of positioning accuracy. Contents of the invention [0003] The present inv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04B7/26H04W64/00
Inventor 袁正午李恭伟叶玮夏英邹永贵刘兆宏鱼详训周鹏葛君伟裵海英
Owner CHONGQING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com