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Joint point-to-point signaling and collision detection method

A signal and input signal technology, applied in the direction of using transceiver near-field transmission systems, phase-modulated carrier systems, instruments, etc., can solve problems such as decoding bit misinterpretation and short ATQA response.

Active Publication Date: 2021-08-06
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Misinterpretation of decoded bits can occur during the Type A Request (REQA) and Type A Request Answer (ATQA) initialization sequences due to the shorter ATQA response without cyclic redundancy check

Method used

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  • Joint point-to-point signaling and collision detection method
  • Joint point-to-point signaling and collision detection method
  • Joint point-to-point signaling and collision detection method

Examples

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Embodiment Construction

[0022] It should be understood that the drawings are only schematic and not drawn to scale. It should also be understood that the same reference numbers are used throughout the drawings to indicate the same or similar parts.

[0023] The description and drawings illustrate principles of various example embodiments. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described or shown herein, embody the principles of the invention and are included within the scope of the invention. In addition, all examples set forth herein are mainly intended to be used explicitly for teaching purposes to assist the reader in understanding the principles of the present invention and concepts provided by the inventors, thereby deepening the field, and all examples should be construed as not limiting to such Specific examples and conditions stated. Additionally, as used herein, the term "or" means a non-exclusive ...

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PUM

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Abstract

Various embodiments relate to a method for classifying received radio frequency signals, the method comprising: receiving an input signal; matching filtering the input signal to generate a correlation result signal; Each bit cell samples the correlation result signal to generate a set of modulated phase correlation result samples and a set of non-modulated phase correlation result samples; calculate the minimum value of the set of modulated phase correlation result samples; calculate the set of non-modulated phase a maximum value of the correlation result samples; and classifying the input signal as valid data or conflicting data based on the minimum value and the maximum value.

Description

technical field [0001] The present disclosure relates generally to telecommunications systems, and more particularly, but not exclusively, to using signal level statistics to classify received radio frequency signals as valid data, colliding data, or invalid data. Background technique [0002] Radio Frequency Identification (RFID) uses electromagnetic fields to identify and track tags attached to objects. RFID tags contain identification information. In response to an interrogation signal from an RFID reader, the RFID tag can communicate a response signal and allow identification by the reader. RFID technology is currently used in a large number of commercial and industrial activities. For example, RFID tags attached to cars during production can be used to track their progress through an assembly line; RFID tags attached to livestock enable animal identification; and RFID tags attached to pharmaceuticals can be used to track pharmaceuticals through warehouses. [0003] I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B5/00H04B5/02H04L27/20H04L27/22H04B5/48
CPCH04L27/20H04L27/22H04B5/77H04B5/48G06K7/10029G06K7/10019
Inventor 乌尔里希·安德烈亚斯·米尔曼乌尔里克·内费
Owner NXP BV