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Method employing ultrahigh frequency RFID reader-writer for ad-hoc network communication

A reader and self-organized network technology, applied in wireless communication, instruments, network topology, etc., can solve the problems of low communication efficiency and can not effectively overcome the reader's self-organized network and other problems

Active Publication Date: 2015-12-02
JIANGSU JUNYI INTERNET OF THINGS +1
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Problems solved by technology

Therefore, the application object of this patent is the active RFID system, and the network communication efficiency is relatively low by using the network classification method. This method cannot effectively overcome the ad hoc network in the mobile state of the reader.

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  • Method employing ultrahigh frequency RFID reader-writer for ad-hoc network communication

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Embodiment Construction

[0018] In order to be compatible with the RFID reading and data communication functions of the reader, the reader in the present invention has two states in a basic working cycle, namely the reading state and the communication state. Such as figure 1 As shown, it is a complete working cycle (T) of the reader, and a complete working cycle includes several complete reading cycles (T1) and A communication cycle (T3), where N is an integer value greater than or equal to 2, and T2 is the time interval between the last reading cycle and the communication cycle. During the N reading cycles, the reader is in the reading state to search for tags. If there is a tag returning data, it will be stored in the cache of the processor for further processing; during the communication cycle, the reader is used to receive and send data. The duration of the reading state and the duration of the communication state can be set through the host computer software. According to the anti-collision pri...

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Abstract

A method employing ultrahigh frequency RFID reader-writer for ad-hoc network communication is provided. On the basis that a traditional hardware frame is not changed, channel monitoring, frequency division, time division and code division technologies are employed integratedly, an inquiry / response mechanism of a network is established with an inquiry / response principle in an ultrahigh frequency RFID identification technology as a reference, the mutual interference problem of reader-writers in a multi-reader-writer ad-hoc network is solved, and thus the data transmission distance and the network deployment region area are increased greatly.

Description

technical field [0001] The invention belongs to the technical field of ultra-high frequency RFID, and in particular relates to a method for ad hoc network communication using an ultra-high frequency RFID reader. Background technique [0002] At present, there are mainly two ways of UHF RFID reader network communication: wireless and wired. The wireless method is mainly because the reader integrates Bluetooth, WiFi, wireless communication modules, etc. These wireless communication modules work in free and open public frequency bands. Devices working in these public frequency bands are limited by radio management and cannot be enlarged. The transmission power, so the communication distance and networking area are greatly restricted, and additional costs are added; the wired network is mainly realized by laying network cables, optical fibers and other wired networks, which increases a considerable part of the project implementation cost in the actual installation process. [0...

Claims

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Application Information

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IPC IPC(8): G06K17/00H04W84/18
Inventor 张君王兵卢国辉徐伟严秀晨
Owner JIANGSU JUNYI INTERNET OF THINGS
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