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A signal identification method and device

A signal identification and channel technology, applied in the field of signal identification, can solve the problems of reducing the efficiency of RFID communication, repeated tag retransmission, etc., to reduce the error rate and improve the quality.

Active Publication Date: 2019-06-11
CHINA MOBILEHANGZHOUINFORMATION TECH CO LTD +1
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  • Abstract
  • Description
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Problems solved by technology

However, this method requires tags to retransmit data repeatedly, which will not only reduce the efficiency of the entire RFID communication

Method used

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  • A signal identification method and device
  • A signal identification method and device
  • A signal identification method and device

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Embodiment Construction

[0062] The invention provides a method and device for signal identification, which are used to effectively improve the efficiency of RFID communication when time slot collision occurs.

[0063] The technical solution in the embodiment of the present application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0064] A method for signal identification is provided, including: a calling device sends a wake-up instruction to all called devices in the current batch; the calling device judges whether a first response instruction is received to obtain a first judgment result; wherein, the first The response command is the aliasing signal formed by all the response commands returned by all the called devices based on the received wake-up command; when the calling device determines that the first judgment result is yes, it uses the upper limit value of the channel and the serial interference algorithm from the first In a response command, identi...

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Abstract

The invention discloses a signal identification method and device, which is used for effectively improving the efficiency of RFID communication when time slot collision occurs. The method comprises the following steps that a calling device sends a wake-up instruction to all called devices in a current batch; the calling device judges whether a first response instruction is received or not to obtain a first judgment result, wherein the first response instruction is an aliasing signal formed by all response instructions returned by all called devices based on the received awakening instruction;when the calling device determines that the first judgment result is yes, a response instruction sent by each called device in the current batch is identified from the first response instruction through a channel upper limit value and a serial interference algorithm; wherein the channel upper limit value represents the maximum channel number which can be used when the calling device sends an instruction.

Description

technical field [0001] The invention relates to the field of the Internet of Things, in particular to a method and device for signal identification. Background technique [0002] The Internet of Things coordinates various smart devices in the Internet of Things network through wireless information sharing and calculation, processing and analysis of data, and provides important information support for smart terminals and cloud computing. In the Internet of Things, the first and most important step of information exchange is to establish the self-organization of the network, that is, to complete the identification of terminal signals and the transmission of data. [0003] In order to save costs, in the communication system of the Internet of Things, electronic tag (Radio Frequency Identification, RFID) readers and electronic tags are usually used to establish an ad hoc network. However, there is such a form of interference in this network: multiple electronic tags will return...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/80H04W74/00H04W74/08
Inventor 贾松昊苏瑞文马金金袁静
Owner CHINA MOBILEHANGZHOUINFORMATION TECH CO LTD
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