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

Method and apparatus for distinguishing line of sight from non line of sight in vehicular communication systems

A vehicle communication, non-line-of-sight technology, applied in vehicle wireless communication services, transmission systems, baseband systems, etc., can solve the problems of increasing RSS, ToA and TDoA measurement errors, large positioning errors, etc.

Inactive Publication Date: 2020-03-06
MITSUBISHI ELECTRIC CORP
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, NLOS propagation has been shown to increase RSS, ToA and TDoA measurement errors, thus generating larger positioning errors

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
  • Method and apparatus for distinguishing line of sight from non line of sight in vehicular communication systems
  • Method and apparatus for distinguishing line of sight from non line of sight in vehicular communication systems
  • Method and apparatus for distinguishing line of sight from non line of sight in vehicular communication systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The general context of the invention is to detect line-of-sight (LOS) and non-line-of-sight (NLOS) conditions of a radio channel between two nodes of a vehicular communication system, where one node receives at random times radio packets sent by the other node. Furthermore, detection needs to be performed using only received radio signals without any prior knowledge of the surrounding environment.

[0014] Equipping the receiving node with a dual-antenna receiver is proposed. The proposed solution then uses the first cluster of multipath components of the channel estimate measured over two antennas to derive the LOS / NLOS channel conditions based on hypothesis testing.

[0015] figure 1 An exemplary vehicle communication system 100 is shown. The vehicle communication system 100 may be a vehicle ad hoc network (VANET) or a vehicle-to-everything communication network (V2X). The vehicle communication system 100 includes a plurality of nodes such as a base station 120a an...

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

Embodiments include apparatuses and methods of identifying line of sight, LOS, and non-line of sight, NLOS, conditions in a multipath channel of a vehicular communication system. It is proposed to equip the receiving node with a dual antenna receiver. Then the proposed solution uses the first cluster of multipath components of channel estimates measured on the two antennas to derive the LOS / NLOS channel conditions based on hypothesis testing.

Description

technical field [0001] The present invention relates to an apparatus and method for identifying line-of-sight LOS and non-line-of-sight NLOS conditions in a multipath channel of a vehicle communication system. Background technique [0002] Location-aware wireless applications require precise positioning methods. A typical application is vehicle positioning from one or more base stations in a vehicle-to-everything (V2X) communication system such as a vehicle-to-everything (V2X) communication system. [0003] One challenge of positioning systems is to successfully mitigate NLOS effects by identifying whether a channel is a line-of-sight (LOS) channel or a non-line-of-sight (NLOS) channel. In fact, the delay estimation error caused by the NLOS channel is the most serious of those factors affecting the estimation accuracy of the positioning. A LOS channel can be understood as a transmitter in line of sight to a receiver, and an NLOS channel can be understood as a transmitter i...

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): G01S5/02H04B17/391H04B17/318H04L25/02
CPCH04L25/0202H04L25/0212H04B17/391G01S5/0218H04W4/40H04L25/0222H04L25/024H04L25/0204
Inventor A·布提尔G·韦卡森X·诺里森
Owner MITSUBISHI ELECTRIC CORP
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