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A Binary Splitting Method Based on Idle Slot Elimination

A technology of binary splitting and idle time slot, which is applied in the field of binary splitting and UHF RFID multi-tag anti-collision based on the elimination of idle time slot, can solve the problems of long coordination transmission time, high identification delay and low identification efficiency, etc. Achieve the effect of reducing the number of transmissions and coordination time, less hardware resources, and improving efficiency

Active Publication Date: 2018-01-05
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art, such as low identification efficiency, long coordination transmission time, high identification delay, and high complexity.

Method used

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  • A Binary Splitting Method Based on Idle Slot Elimination
  • A Binary Splitting Method Based on Idle Slot Elimination
  • A Binary Splitting Method Based on Idle Slot Elimination

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Embodiment Construction

[0025] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments. Such as figure 1 Shown is a binary splitting algorithm based on idle time slot elimination of the present invention, which specifically includes the following steps:

[0026] S1: The reader initializes the identification process. In the initialization phase, the tag counter T c , the random number generator Q, and the identification bits F are both 0, where both Q and F are binary numbers 0 or 1.

[0027] S2: The reader sends a query command, all unrecognized tags within the working range of the reader (unrecognized tags T c ≥0, hereafter use T c ≥0 means unrecognized tag) Received the query command from the reader.

[0028] S3: If the label counter value T c =0, then return data to the reader-writer; the returned data is specifically: when the tag’s identification bit F=0, the tag returns a 1-bit Q signal to the reader-writer, and Q is a b...

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Abstract

The invention discloses a binary splitting method based on the elimination of idle time slots. By introducing a one-bit identification bit into the binary splitting algorithm, during the identification process, the identification bit is used to pre-group labels, and then the idea of ​​binary random number splitting is used Each set of tags is split and identified. The specific process is: the tag whose timer is 0 is active, when the identification bit F is 0, send a 1-bit Q signal to the reader, and when the identification bit F is 1, send ID data to the reader. The reader / writer feeds back different feedback signals according to the received tag response to make the tag perform corresponding operations. Compared with the traditional binary splitting algorithm, the method of the present invention completely eliminates the idle time slot generated in the identification process, so it can save the coordination time overhead in the identification process, thereby improving the identification efficiency; in addition, part of the collision arbitration is assisted by the Q signal Complete, thereby effectively reducing the amount of information transmission and reducing system energy consumption.

Description

technical field [0001] The invention belongs to the ultra-high frequency (UHF) radio frequency identification (RFID) multi-label anti-collision technology in the field of wireless communication, and in particular relates to a binary splitting method based on idle time slot elimination. Background technique [0002] Rapid identification is an urgent need for modern radio frequency identification (RFID) systems, especially in the fields of logistics management, supply chain management, food production, bioelectronics and pharmaceuticals, and industrial automation. In most industrial applications, passive ultra-high frequency (UHF) RFID is more popular due to its advantages such as long communication distance, fast recognition speed, large storage capacity, and low cost. A typical application of RFID systems is to attach a large number of On high density products, then identify them quickly and efficiently. In order to realize the tracking and identification of the target prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K17/00
Inventor 苏健文光俊李建
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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