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Mobile terminal and method for positioning based on radio frequency identification

A technology of radio frequency identification and mobile terminals, which is applied in positioning, utilization of re-radiation, reflection/re-radiation of radio waves, etc.

Active Publication Date: 2011-05-04
ZTE CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a positioning mobile terminal and a positioning method based on radio frequency identification (RFID), so as to solve the problems of positioning accuracy and cost in various positioning methods in the prior art.

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  • Mobile terminal and method for positioning based on radio frequency identification
  • Mobile terminal and method for positioning based on radio frequency identification
  • Mobile terminal and method for positioning based on radio frequency identification

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Embodiment Construction

[0049] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the drawings and embodiments.

[0050] Based on the radio frequency identification principle, the present invention integrates the traditional radio frequency positioning principle and the traditional ranging system into an intelligent mobile terminal (such as a mobile phone), and adds a short-range positioning algorithm, which can be used between two objects (including movable objects) short-range ranging and positioning.

[0051] The principle of radio frequency identification is based on electromagnetic wave ranging. There are three main methods of electromagnetic wave ranging, namely, the RSS (received signal strength) method based on the received field strength, the TOA (time of arrival) method based on the incoming wave arrival time, and the AOA (angle of arrival) method based on the incoming wave arrival angle. .

[0052]The invention ...

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Abstract

The invention provides a mobile terminal and a method for positioning based on radio frequency identification (RFID). The mobile terminal comprises a microwave antenna, a radio frequency identification analog front end module connected with the microwave antenna, a positioning processing module connected with the microwave antenna, and a digital baseband processing module connected with the radio frequency identification analog front end module and the positioning processing module respectively. The positioning method comprises that: a first terminal transmits a radio frequency signal for requesting positioning; the first terminal receives a radio frequency signal which is returned by a second terminal and is used for responding to positioning; the first terminal acquires corresponding power value, phase and time according to the radio frequency signal for requesting positioning and / or the radio frequency signal for responding to positioning; and the first terminal acquires positioning information according to the power, phase and time. Therefore, the mobile terminal and the method for positioning based on RFID can realize real-time positioning function and accurately and rapidly determine a relative position of the opposite side in an electromagnetic induction range.

Description

technical field [0001] The present invention relates to the field of mobile communication positioning, in particular to a mobile terminal and positioning method for positioning based on radio frequency identification (RFID for short). Background technique [0002] The existing terminal positioning methods are as follows: [0003] The first way is the Global Positioning System (GPS), but since the Global Positioning System belongs to satellite positioning, there are inherent positioning accuracy problems in indoor positioning, so other positioning technologies must be used to solve the indoor positioning problem. [0004] The second method is infrared positioning. For example, the Active Badge system of Olivetti Research Laboratory uses infrared technology to achieve indoor positioning. However, the two main disadvantages of line-of-sight and short transmission distance make it poor for indoor positioning. [0005] The third way is IEEE802.11: RADAR is an indoor positioning...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/74G01S5/14H04W64/00
CPCH04W64/00G01S13/75
Inventor 沈少武
Owner ZTE CORP
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