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Communication method based on radio frequency identification system, apparatus and system thereof

A technology of a radio frequency identification system and a communication method, applied to devices and systems, in the field of communication methods based on radio frequency identification systems, can solve problems such as being susceptible to external environment interference, large energy consumption of electronic tag batteries, affecting the accuracy of detection results, and the like, To ensure stability and achieve simple results

Active Publication Date: 2014-12-17
ZTE INTELLIGENT IOT TECH
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Problems solved by technology

This method is not suitable for active electronic tags. First, the detection of RSSI requires the radio frequency circuit of the electronic tag to be in the radio frequency receiving state all the time, which consumes a lot of energy for the electronic tag battery; secondly, the detection of RSSI is easily affected by the external environment. Interference will affect the accuracy of the detection results and reduce the stability of RFID system communication

Method used

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  • Communication method based on radio frequency identification system, apparatus and system thereof
  • Communication method based on radio frequency identification system, apparatus and system thereof
  • Communication method based on radio frequency identification system, apparatus and system thereof

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Embodiment Construction

[0031] In order to realize the two-way communication between the electronic tag and the reader in the radio frequency identification (RFID) system, save the battery energy consumption of the active electronic tag, and ensure the stability of the communication between the electronic tag and the reader, the embodiment of the present invention provides A communication method, device and system based on a radio frequency identification system. The method is as follows: the electronic tag receives the data frame sent by the reader in the current counting cycle, parses the data frame and extracts the frame number from the predetermined field, calculates the waiting time for the current counting cycle to enter the channel idle state based on the extracted frame number, and When it is determined that the reader is in the channel idle state, a time slot is selected from the time slots included in the current inventory cycle, and a message is sent to the reader based on the selected time...

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Abstract

A radio frequency identification system based communication method, apparatus and system are disclosed, which are used for implementing bi-directional communication between an electronic tag and a reader in the radio frequency identification system, saving battery power consumption in an active electronic tag, and guaranteeing communication stability between the electronic tag and the reader. Wherein, the method includes: receiving data frames sent by the reader in the current checking period, analyzing the data frames and extracting frame sequence numbers from preset fields, calculating waiting time required for the current checking period to enter into a channel idle state based on the extracted frame sequence numbers, selecting one timeslot from timeslots included in the current checking period when determining the reader is in the channel idle state, and transmitting messages to the reader based on the selected timeslot.

Description

technical field [0001] The present invention relates to the field of radio frequency identification, in particular to a communication method, device and system based on a radio frequency identification system. Background technique [0002] At present, application systems centered on radio frequency identification (Radio Frequency Identification, RFID) technology are widely used in the field of intelligent transportation. RFID technology uses radio frequency signals based on spatial coupling transmission characteristics to realize automatic identification of objects in a non-contact manner. An RFID system generally includes two parts: a reader and an electronic tag, and the reader is a device for reading the information of the electronic tag. The reader sends and receives data in units of counting cycle, that is, one counting cycle includes two stages of sending data and receiving data. According to different application scenarios, the number of sending data frames and the n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/00
CPCG06K7/0008Y02B60/50
Inventor 吴奇徐运刘金栋汪旭光
Owner ZTE INTELLIGENT IOT TECH
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