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Method, readable medium and device for calculating ranging value in cellular communication network

A technology for cellular communication networks and mobile communication equipment, applied in wireless communication, location-based services, measurement devices, etc., and can solve problems such as unclear arrival time and reduced accuracy

Active Publication Date: 2021-04-13
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

and because the accuracy of position calculations depends on accurately measuring the time of arrival, anything that interferes with the time of arrival measurement will make the resulting position estimate less accurate
This poses a particular problem because multipath conditions can lead to ambiguities in the measured arrival times

Method used

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  • Method, readable medium and device for calculating ranging value in cellular communication network
  • Method, readable medium and device for calculating ranging value in cellular communication network
  • Method, readable medium and device for calculating ranging value in cellular communication network

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Embodiment Construction

[0077] Embodiments of the invention relate to methods for improving the accuracy of ranging values ​​of signals used in cellular positioning systems. In general, embodiments are applicable to all modern cellular systems in which a single base station can control multiple cell sectors - that is to say, all cellular communication networks comprising at least one sectorized base station. figure 1 An example of an LTE base station 10, also called an evolved Node B (eNodeB), is shown, wherein the area surrounding the base station 10 is divided into three cell sectors 12a, 12b, 12c. In order to physically separate signals among adjacent cell sectors, the antennas deployed at sectorized base stations 10 are often designed to radiate the power of wireless signals over areas of little overlap, thereby achieving only minimal inter-sector interference . figure 1 In , the hexagonal area surrounding the base station 10 is notionally divided into three diamond-shaped cell sectors 12a, 12b,...

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Abstract

The present invention relates to methods, readable media and devices for computing ranging values ​​in a cellular communication network. The method includes: receiving (710) at a receiver (910) a first signal associated with a first cell sector of a sectorized base station in a cellular communication network; determining (712, 812) a portion of the first signal at the receiver ( 910) at least one first time of arrival; receive (711) at the receiver (910) a second signal associated with a second cell sector of the sectorized base station; determine (713, 813) that a portion of the second signal is received at least one second time of arrival at the receiver (910); and calculating (720, 820) a ranging value between the base station and the receiver (910) based on a combination of the at least one first time of arrival and the at least one second time of arrival.

Description

technical field [0001] The present invention relates to methods and apparatus for calculating ranging values ​​in a cellular communication network, eg between a user equipment (UE) and a base station (BS). This may be useful to assist in determining the location of the UE. It is believed that aspects of the present invention may be particularly beneficial when applied in the context of 4G Long Term Evolution (LTE) networks. Background technique [0002] It is known to determine the position of a mobile communication device (often referred to in the art as "user equipment") by observing signals that are valid in the local environment and detectable by a receiver in the device. These signals are not necessarily intended to provide a location function, and are sometimes referred to as "signals of opportunity" ("SoOps"). [0003] In particular, it is known to use signals transmitted by cellular base stations in cellular communication networks as SoOps in order to calculate pos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W64/00
CPCH04W4/02H04W64/00G01S5/0218G01S5/0273G01S5/14G01S11/08H04W24/08
Inventor 马可·德里尤索克里斯多佛·布赖恩·马歇尔
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